Modularized battery box body structure

Abstract

The modularized battery box body structure comprises a bottom supporting module used for protecting a box body, a box body main body module and a reinforcing module used for reinforcing the strength of the box body which are sequentially connected from bottom to top, wherein the box body main body module is used for loading a module or a battery cell, and the box body main body module is a metal sheet metal part or a non-metal molded part; the reinforcing module is arranged in the box body main body module and used for reinforcing the box body strength and / or installing the module, and the reinforcing module is a metal sheet metal part; and the bottom supporting module is used for protecting the box body main body module, the bottom supporting module is a profile formed by combining extrusion profile pieces through friction stir welding and mainly plays roles in bearing the box body and connecting the bottom of the automobile, and the number of the bottom supporting module structures is increased or decreased according to actual needs. On the basis of a traditional sectional material bottom plate box body structure, the box body is divided into three modules, the three modules can be independently designed as long as it is guaranteed that the three modules can be connected, and proper modules can be selected to be combined and matched according to actual different scene requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy battery PACK system design, and in particular to a modular battery box structure. Background Art

[0002] As one of the most important components of new energy vehicles, the cost of power batteries accounts for about 38% of the cost of the entire vehicle. The current mainstream box structures are aluminum profile structures, sheet metal structures and one-piece die-cast structures. The above boxes are all single box structures, which cannot take into account the advantages of various different box structures. In addition, each battery pack must be redeveloped, which has high R&D costs and a long cycle. The utility model adopts a modular structural design. Through the combination of various modules, it not only reduces the R&D cost, but also can combine the advantages of various modules. Utility Model Content

[0003] Technical problems to be solved: In view of the problems existing in the prior art, the present invention proposes a modular battery box structure, which has the advantages of reducing R&D costs, reducing the cost of parts and improving the performance of the box.

[0004] Technical solution: A modular battery box structure, which includes, from bottom to top, a bottom support module for protecting the box, a box body module, and a reinforcement module for strengthening the box strength, which are connected in sequence;

[0005] Among them, the box body module is used to load the module or battery cell, and the box body module is a metal sheet metal part or a non-metal molded part;

[0006] A reinforcement module is arranged inside the box body module and is used to strengthen the box body strength and / or install the module. The reinforcement module is a metal sheet metal part;

[0007] The bottom supporting module is used to protect the main module of the box. The bottom supporting module is a profile composed of extruded materials through stir friction welding. It mainly plays the role of supporting the box and connecting the bottom of the car. The number of bottom supporting module structures can be increased or decreased according to actual needs.

[0008] Preferably, the box body module, the reinforcement module and the bottom support module are connected into a whole by using rivet nuts and bolts.

[0009] Preferably, sealing gaskets are installed at the connections between the box body module, the reinforcement module and the bottom support module to ensure the sealing of the box.

[0010] Preferably, the box body module includes a bottom plate and side plates arranged around the bottom plate, wherein the two side plates are provided with a plurality of box body mounting holes for connection. The structural type of the main module can be determined according to actual needs, and the positions and number of the box body mounting holes can be matched with the bottom support module ears.

[0011] Preferably, the bottom supporting module includes several groups of bottom supporting structures evenly arranged at the bottom of the box body module, each group of bottom supporting structures includes a bottom supporting module cross beam and bottom supporting module ears arranged at both ends of the bottom supporting module cross beam (the bottom supporting module ears and the bottom supporting module cross beam are combined by stir friction welding), the bottom supporting module ears are used to connect the bottom of the car, the bottom supporting module cross beam is used to connect the left and right bottom supporting module ears to form a complete bottom supporting structure, the length of the bottom supporting module cross beam depends on the width of the box body module structure, the bottom supporting module ears are arranged on the outside of the box body module, including a connector and an extension member arranged on one side of the bottom of the connector, the connector is a U-shaped structure placed horizontally with the open end facing outward, a through hole is vertically provided on the outside of the connector, which is connected to the bottom of the car by bolts, and a nut hole is provided on the side wall for installing sealing rivet nuts, and the position and number of the sealing rivet nuts correspond to the position and number of the box mounting holes on the two side panels of the box body module.

[0012] Preferably, the connector is a rectangular frame, and the connection between the extension piece and the connector is rounded.

[0013] Preferably, the reinforcement module includes an L-shaped frame arranged on both sides and a reinforcement beam connecting the L-shaped frames on both sides (composed of several metal sheet metal parts, formed into a complete whole by welding), the reinforcement module is embedded in the inside of the box body main module, the bottom of the reinforcement module is provided with a module mounting hole, the side wall is provided with a reinforcement module mounting hole and corresponding mounting bolts, the number and position of the reinforcement module mounting holes correspond to the position and number of the box mounting holes on the two side panels of the box body main module, and the bottom support module, the box body main module and the reinforcement module are connected by the cooperation of the mounting bolts and the sealing rivet nuts.

[0014] Preferably, an external sealing gasket is provided at the connection between the bottom supporting module and the box body module, and an internal sealing gasket is provided at the connection between the box body module and the reinforcement module.

[0015] The working principle of the above modular battery box is as follows:

[0016] The bottom support module structure is welded by extruded material parts. It consists of two profile structure ears and a profile structure beam connected by stir friction welding. Sealed rivet nuts are installed on the two ears. The length of the beam depends on the width of the main module of the box body.

[0017] The main module structure of the box is mainly used to carry the module. Its structure can be a metal sheet metal or a non-metal molded part, and connection and mounting holes are opened on both sides of the box. Rivet nuts and bolts are used to connect the bottom module structure. The number and position of the mounting holes match the bottom module structure.

[0018] The reinforced module structure is formed by welding a number of metal sheet metal parts, and is provided with module mounting holes and mounting holes for connecting the bottom supporting module and the box module.

[0019] The three module structures are connected into a whole through rivet nuts and bolts. Sealing foam is installed at the joints between the modules, mainly to ensure the sealing of the box.

[0020] Beneficial effects: The modular battery box of the utility model includes a bottom supporting module structure for protecting the box, a box main body module structure and a reinforcing module structure for strengthening the strength of the box; the bottom supporting module structure is formed by welding of extruded type profiles, and is mainly composed of two profile lugs and a profile crossbeam, which are connected by stir friction welding, and is mainly used to support the box and connect the car floor; the box main body module structure can be a metal sheet metal part or a non-metal molded part according to actual needs, and mounting holes are opened on both sides of the box, which are mainly used to connect the bottom supporting module structure, and the position and number of the mounting holes match the rivet nuts on the lugs of the bottom supporting module structure; the reinforcing module structure is welded by several metal sheet metal parts, and is diversified in design according to actual strength requirements, and is mainly used to strengthen the box strength and install fixed modules; the above three modules are connected by rivets and bolts, so each module is independent of each other to a certain extent, and can be designed synchronously and separately.

[0021] The present invention is not limited to any cross-section bottom supporting module structure and box body module structure. The reinforcement module structure can be designed according to actual needs to match the box body module structure; the number of bottom supporting module structures can be increased or decreased according to actual design needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the box body of the utility model;

[0023] Figure 2 This is a structural explosion diagram of the box body of the utility model;

[0024] Figure 3 It is the exploded diagram of the installation of three kinds of module structures of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the bottom supporting module of the utility model;

[0026] Figure 5 This is an exploded view of the bottom supporting module structure of the utility model;

[0027] Figure 6 This is a schematic diagram of the main module structure of the box body of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the strengthening module of the utility model;

[0029] The attached figure indicates: 1-box body module, 2-mounting bolts, 3-reinforcement module, 4-external sealing gasket, 5-bottom support module lifting ear, 6-internal sealing gasket, 7-bottom support module crossbeam, 8-sealed rivet nut, 9-box mounting hole, 10-reinforcement module mounting hole, 11-module mounting hole, 12-bottom support module. DETAILED DESCRIPTION

[0030] The following is a detailed description of the embodiments of the present invention, such as the shapes and structures of the components involved, the relative positions and connection relationships between the components, the functions and working principles of the components, etc., with reference to the accompanying drawings.

[0031] A modular battery box structure, see Figure 1-7 From bottom to top, it includes a bottom supporting module 12 for protecting the box body, a box body main body module 1 and a reinforcing module 3 for reinforcing the strength of the box body, which are connected in sequence.

[0032] The box body module 1 is used to load the module or the battery cell, and the box body module 1 is a metal sheet metal part or a non-metal molded part.

[0033] The reinforcement module 3 is arranged inside the box body module 1 and is used to strengthen the box body strength and / or install the module. The reinforcement module 3 is a metal sheet metal part.

[0034] The bottom supporting module 12 is used to protect the box body module 1. The bottom supporting module 12 is a profile formed by combining extruded material pieces through stir friction welding.

[0035] As one of the preferred embodiments of the present invention, the box body module 1, the reinforcement module 3 and the bottom support module 12 are connected into a whole by using rivet nuts and bolts.

[0036] As one of the preferred embodiments of the present invention, sealing gaskets are installed at the connection between the box body module 1, the reinforcement module 3 and the bottom support module 12 to ensure the sealing of the box.

[0037] As one of the preferred embodiments of the present invention, the box body module 1 includes a bottom plate and side plates arranged around the bottom plate, wherein the side plates are provided with a plurality of box installation holes 9 for connection.

[0038] As one of the preferred embodiments of the present invention, the bottom supporting module 12 includes several groups of bottom supporting structures evenly arranged at the bottom of the box body module 1, each group of bottom supporting structures includes a bottom supporting module beam 7 and a bottom supporting module ear 5 arranged at both ends of the bottom supporting module beam 7, the bottom supporting module ear 5 is arranged on the outside of the box body module 1, including a connector and an extension member arranged on one side of the bottom of the connector, the connector is a U-shaped structure placed horizontally with the open end facing outward, a through hole is vertically provided on the outside of the connector, and the bottom of the car is connected by bolts, and a nut hole is provided on the side wall for installing a sealing rivet nut 8, and the position and number of the sealing rivet nuts 8 correspond to the position and number of the box mounting holes 9 on the two side panels of the box body module 1.

[0039] As one of the preferred embodiments of the present invention, the connector is a rectangular frame, and the connection between the extension piece and the connector is rounded.

[0040] As one of the preferred embodiments of the present invention, the reinforcement module 3 includes an L-shaped frame arranged on both sides and a reinforcement beam connecting the L-shaped frames on both sides. The reinforcement module 3 is embedded in the box body main module 1. The bottom of the reinforcement module 3 is provided with a module mounting hole 11, and the side wall is provided with a reinforcement module mounting hole 10 and a corresponding mounting bolt 2. The number and position of the reinforcement module mounting holes 10 correspond to the position and number of the box mounting holes 9 on the two side panels of the box body main module 1. The bottom support module 12, the box body main module 1 and the reinforcement module 3 are connected by the cooperation of the mounting bolts 2 and the sealing rivet nuts 8.

[0041] As one of the preferred embodiments of the present invention, an external sealing gasket 4 is provided at the connection between the bottom supporting module 12 and the box body module 1 , and an internal sealing gasket 6 is provided at the connection between the box body module 1 and the reinforcement module 3 .

[0042] Example 1

[0043] This embodiment is a modular battery box structure, see Figure 1-3 , from bottom to top, it includes a bottom supporting module 12 for protecting the box, a box body module 1, and a reinforcement module 3 for strengthening the box strength, which are connected in sequence. The bottom supporting module 12 is mainly used to bear the box 1 and connect the car floor; the box body module 1 can be a metal sheet metal part or a non-metal molded part according to actual needs; the reinforcement module 3 can be designed in a variety of ways according to actual strength requirements, and is mainly used to strengthen the box strength and install the fixed module; the above three modules are connected to the mounting bolts 2 through the sealing rivet nut 8, so each module is independent of each other to a certain extent, and can be designed synchronously and separately.

[0044] Furthermore, the box body module 1 is used to load the module or the battery cell, and the box body module 1 is a metal sheet metal part or a non-metal molded part. Figure 6The box body module 1 includes a bottom plate and side plates arranged around the bottom plate, wherein the side plates are provided with a plurality of box mounting holes 9 for connection. As shown in the figure, in this embodiment, each side plate is provided with five groups of holes, and each group of holes includes four box mounting holes.

[0045] The reinforcement module 3 is arranged inside the box body module 1 and is used to strengthen the box body strength and / or install the module. The reinforcement module 3 is a metal sheet metal part. Figure 7 The reinforcing module 3 includes an L-shaped frame arranged on both sides and a reinforcing beam connecting the L-shaped frames on both sides (a "stem" structure beam is used in this embodiment), the reinforcing module 3 is embedded in the box body main body module 1, and a module mounting hole 11 is provided at the bottom of the reinforcing module 3 (the number and position of the module mounting holes 11 are opened according to actual needs), and the side wall is provided with a reinforcing module mounting hole 10 and a corresponding mounting bolt 2. The number and position of the reinforcing module mounting holes 10 correspond to the position and number of the box mounting holes 9 on the two side panels of the box body main body module 1. The bottom supporting module 12, the box body main body module 1 and the reinforcing module 3 are connected by the cooperation of the mounting bolts 2 and the sealing rivet nuts 8.

[0046] See also Figures 4-5 The bottom supporting module 12 is used to protect the box body module 1. The bottom supporting module 12 is a profile formed by combining extruded type materials by stir friction welding. The bottom supporting module 12 includes five groups of bottom supporting structures evenly arranged at the bottom of the box body module 1, each group of bottom supporting structures includes a bottom supporting module cross beam 7 and a bottom supporting module ear 5 provided at both ends of the bottom supporting module cross beam 7, and the bottom supporting module ear 5 is provided on the outside of the box body module 1, including a connector and an extension provided on one side of the bottom of the connector. The connector is a U-shaped structure placed horizontally with the open end facing outward. A through hole is vertically provided on the outside of the connector, which is connected to the bottom of the car by bolts. The side wall is provided with a nut hole for installing a sealing rivet nut 8. The position and number of the sealing rivet nut 8 correspond to the position and number of the box body mounting holes 9 on the two side panels of the box body module 1. The length of the bottom supporting module cross beam 7 depends on the width of the box body module 1.

[0047] The connector in this embodiment is a rectangular frame, and the connection between the extension piece and the connector is rounded.

[0048] In addition, in order to ensure the sealing of the box, an external sealing pad 4 is provided at the connection between the bottom supporting module 12 and the box body module 1, and an internal sealing pad 6 is provided at the connection between the box body module 1 and the reinforcement module 3. The material of the external sealing pad 4 and the internal sealing pad 6 is sealing foam.

[0049] The present invention is not limited to any cross-section of the bottom supporting module 12 and the box body module 1. The reinforcement module 3 can be designed according to actual needs to match the box body module 1; the number of the bottom supporting modules 12 can be increased or decreased according to actual design needs.

[0050] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned implementation modes, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned implementation modes, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the implementation modes of the utility model.

Claims

1. A modular battery box structure, characterized in that: From bottom to top, it comprises a bottom supporting module (12) for protecting the box body, a box body main body module (1) and a reinforcing module (3) for reinforcing the strength of the box body, which are connected in sequence; The box body module (1) is used to load the module or the battery cell, and the box body module (1) is a metal sheet metal part or a non-metal molded part; A reinforcement module (3) is arranged inside the box body module (1) and is used to strengthen the box body strength and / or install the module. The reinforcement module (3) is a metal sheet metal part. The bottom supporting module (12) is used to protect the box body module (1); the bottom supporting module (12) is a profile formed by combining extruded material pieces through stir friction welding.

2. A modular battery box structure according to claim 1, characterized in that: The box body module (1), the reinforcement module (3) and the bottom support module (12) are connected into a whole by using rivet nuts and bolts.

3. A modular battery box structure according to claim 2, characterized in that: Sealing gaskets are installed at the connection points between the box body main module (1), the reinforcement module (3) and the bottom supporting module (12) to ensure the sealing performance of the box body.

4. A modular battery box structure according to claim 2, characterized in that: The box body module (1) comprises a bottom plate and side plates arranged around the bottom plate, wherein the side plates are provided with a plurality of box body mounting holes (9) for connection.

5. A modular battery box structure according to claim 4, characterized in that: The bottom supporting module (12) comprises a plurality of groups of bottom supporting structures evenly arranged at the bottom of the box body module (1), each group of bottom supporting structures comprising a bottom supporting module cross beam (7) and a bottom supporting module lifting lug (5) arranged at both ends of the bottom supporting module cross beam (7), the bottom supporting module lifting lug (5) being arranged at the outside of the box body module (1), comprising a connecting body and an extension member arranged at one side of the bottom of the connecting body, the connecting body being a U-shaped structure placed horizontally with an open end facing outward, a through hole being vertically provided on the outside of the connecting body, connected to the bottom of the car by bolts, a nut hole being provided on the side wall for installing a sealing rivet nut (8), the position and number of the sealing rivet nut (8) corresponding to the position and number of the box body mounting holes (9) on the two side panels of the box body module (1).

6. A modular battery box structure according to claim 5, characterized in that: The connector is a rectangular frame, and the connection between the extension piece and the connector is rounded.

7. A modular battery box structure according to claim 5, characterized in that: The reinforcing module (3) comprises L-shaped frames arranged on both sides and reinforcing beams connecting the L-shaped frames on both sides. The reinforcing module (3) is embedded in the box body main module (1). The bottom of the reinforcing module (3) is provided with a module mounting hole (11), and the side wall is provided with a reinforcing module mounting hole (10) and corresponding mounting bolts (2). The number and position of the reinforcing module mounting holes (10) correspond to the position and number of the box body mounting holes (9) on the two side plates of the box body main module (1). The bottom supporting module (12), the box body main module (1) and the reinforcing module (3) are connected by the cooperation of the mounting bolts (2) and the sealing rivet nuts (8).

8. A modular battery box structure according to claim 7, characterized in that: An external sealing gasket (4) is provided at the connection between the bottom supporting module (12) and the box body module (1), and an internal sealing gasket (6) is provided at the connection between the box body module (1) and the reinforcement module (3).

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