Combined automobile battery frame

Abstract

The utility model discloses a combined type automobile battery frame which comprises a frame body, the frame body is composed of a battery bin frame and an element bin frame, and the battery bin frame is of a structure shaped like a Chinese character'mu '. A frame of the frame body is of a vertically-arranged three-cavity structure, and the frame is composed of a rolling part and a connecting plate. The whole rolling piece is in a concave shape rotating by 90 degrees and is composed of a middle plate, an upper cavity and a lower cavity, and the upper cavity and the lower cavity are located at the two ends of the middle plate; the connecting plate covers the U-shaped notch, the connecting plate and the rolling piece define a middle cavity, and the connecting plate is connected with the upper cavity and the lower cavity. The utility model has the characteristics that the structure is simple, parts are convenient to install, the weight is easy to adjust, and the processing and the installation are easy.

Description

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[0001] The utility model relates to the technical field of automotive batteries, and particularly relates to a combined automotive battery frame. Background Art <00****005>With the wide application of electric vehicles and other energy storage devices, the design and manufacture of battery frames are facing increasingly high requirements, especially in terms of the balance between strength and weight, the complexity of processing technology, and cost control. Traditional battery frames mostly adopt fully steel roll-pressed parts or aluminum alloy profiles. The battery frame made of fully steel roll-pressed parts has advantages such as low raw material price, high material strength, excellent welding performance, and less carbon emissions. It often adopts a rectangular structure formed by integral roll pressing to meet the strength requirements. However, the manufacturing cost of the rectangular roll-pressing tooling is relatively high, and its transverse ribs are difficult to cut, resulting in difficulties in arranging explosion-proof valves and connectors when passing through the frame. In addition, due to the relatively large density of steel itself, the battery frame may be relatively heavy while meeting the strength requirements, thereby affecting the overall energy density of the battery pack. The battery frame made of aluminum alloy profiles has the characteristics of light weight and variable cross-sectional shapes, but its strength and welding performance are inferior to those of steel roll-pressed parts. Summary of the Utility Model

[0003] The utility model is used to overcome the defects of the existing technology and provide a combined automotive battery frame to solve the problems mentioned in the background art.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] A combined automotive battery frame includes a frame body, and the frame body is composed of a battery compartment frame and a component compartment frame;

[0006] The frame of the frame body is a three-chamber structure arranged up and down, and the frame is composed of a roll-pressed part and a connecting plate; the roll-pressed part is integrally in a concave shape rotated 90 degrees, and is composed of a middle plate, an upper chamber, and a lower chamber. The upper chamber and the lower chamber are located at both ends of the middle plate; the connecting plate covers the concave-shaped notch and encloses with the roll-pressed part to form a middle chamber. The connecting plate is respectively connected to the upper chamber and the lower chamber.

[0007] In the frame of the periphery of the above-mentioned combined automotive battery frame, the roll-pressed part is located on the outside of the frame body, and the connecting plate is located on the inside of the frame body.

[0008] In the above-mentioned combined automotive battery frame, the structures and sizes of the upper chamber and the lower chamber are the same; in the height direction, the relationship between the height d1 of the upper chamber and the height d2 of the middle chamber is that d1 / d2 is between 1 / 5 and 1 / 4. <00****020>For the above combined automotive battery frame, avoidance holes are provided on the side of the frame body border, and the avoidance holes pass through the middle cavity; the avoidance holes are opened according to the shape of the explosion-proof valve or the connector; the dimension of the avoidance hole in the height direction is smaller than the height of the middle cavity.

[0010] For the above combined automotive battery frame, the relationship between the width d3 and the height d4 of the frame body border is that d3 / d4 is between 1 / 4 and 1 / 3.

[0011] For the above combined automotive battery frame, a lifting beam is provided on the outside of the frame body.

[0012] For the above combined automotive battery frame, the connecting plate and the cavity walls of the two cavities of the rolling member are connected by rivets. Beneficial effects

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] First, the border of the frame body is a three-cavity structure composed of a U-shaped rolling member and a connecting plate. The upper cavity and the lower cavity of the U-shaped rolling member can be controlled to a smaller size in the height direction, so that the middle cavity has a larger size in the height direction, avoiding the problem that it is difficult to cut holes in the horizontal ribs inside the rectangular structure when the traditional all-steel rolling member avoids the explosion-proof valve or the connector, resulting in difficulties in arranging the explosion-proof valve and the connector. At the same time, it also avoids the influence of cutting the horizontal ribs on the structural strength.

[0015] Second, the traditional all-steel rolling member uses a rectangular rolling member. As Figure 6 shown, there is a situation of double-layer steel plates on one side wall of the middle cavity, which will bring an increase in weight and also an increase in the difficulty of cutting the avoidance holes. The utility model avoids such problems.

[0016] Third, the border composed of the rolling member and the connecting plate is convenient for the connecting plate to select materials flexibly and determine the thickness dimension. The connecting plate can be designed as an aluminum alloy plate, which is beneficial to reducing the weight and avoiding the problem that the battery case frame may be heavy while meeting the strength requirements due to the large density of the all-steel frame, thereby affecting the overall energy density of the battery pack.

[0017] Fourth, compared with the traditional rectangular structure, the processing technology of the U-shaped structure of the rolling member is greatly simplified (the cross-section of the traditional integral rolling rectangular structure is relatively complex, the width of the unfolded plate is large, the required roller is large, and dozens of continuous and precise rolling processes are required to achieve it), and the processing tooling cost is low. Description of the drawings

[0018] The following further details the utility model in conjunction with the drawings.

[0019] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the frame structure of this utility model;

[0021] Figure 3 This is a cross-sectional schematic diagram of the frame of this utility model;

[0022] Figure 4 This is another cross-sectional schematic diagram of the frame of this utility model;

[0023] Figure 5 This is an exploded view of the frame structure of this utility model;

[0024] Figure 6 This is a schematic diagram of a traditional I-shaped steel roller press.

[0025] The labels in the diagram represent:

[0026] 1. Frame body, 2. Battery compartment frame, 3. Component compartment frame, 4. Lifting beam, 5. Rivet, 1-1. Rolled part, 1-2. Connecting plate, 1-1-1. Intermediate plate, 1-1-2. Upper cavity, 1-1-3. Lower cavity, 1-3. Clearance hole, 1-2-1. Middle cavity. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] like Figure 1-5 As shown, this utility model includes a frame body 1, which is composed of a battery compartment frame 2 and a component compartment frame 3. The battery compartment frame 2 houses the power battery, and the component compartment frame 3 houses electrical components such as a BDU (Battery Energy Distribution Unit) and a BMS (Battery Management System).

[0029] The frame 1 has a three-cavity structure with vertically arranged edges. The edges are composed of a roll forming component 1-1 and a connecting plate 1-2. The roll forming component 1-1 is shaped like a U-shaped plate rotated 90 degrees, consisting of a middle plate 1-1-1, an upper cavity 1-1-2, and a lower cavity 1-1-3. The upper cavity 1-1-2 and lower cavity 1-1-3 are located at both ends of the middle plate 1-1-1. The connecting plate 1-2 covers the U-shaped notch, forming a middle cavity 1-2-1 with the roll forming component 1-1. The connecting plate 1-2 is connected to both the upper cavity 1-1-2 and the lower cavity 1-1-3. The roll forming component 1-1 is formed by rolling a single piece of steel plate. The connecting plate 1-2 can be made of aluminum alloy, which reduces weight and facilitates the cutting of clearance holes on the frame. Of course, if the weight of the frame is not a concern, the connecting plate 1-2 can also be made of steel.

[0030] The difference between the three-chamber structure of the present utility model and the traditional steel-made one-piece roll-formed rectangular structure lies in that: for the traditional steel-made roll-formed parts, such as Figure 6 shown, which is a rectangular structure. In fact, it is also a three-chamber structure. However, since it is roll-formed from a whole steel plate, one side wall of the middle chamber part has a structure of two layers of steel plates ( Figure 6 the left side wall of the middle chamber in it), which brings two problems: First, when the overall height of the frame is fixed, if the height of the middle chamber is set too large, due to one side wall having a structure of two layers of steel plates, it will inevitably lead to an increase in the overall weight of the frame and material waste; if the height of the middle chamber is set small to reduce the weight, when cutting avoidance holes (avoidance holes are opened on the frame to avoid explosion-proof valves, connectors, etc.), it is difficult to cut without cutting the horizontal ribs inside the rectangle, which will not only affect the structural strength, but also increase the cutting difficulty due to the two layers of steel plates on one side wall of the middle chamber. While the frame of the present utility model is a three-chamber structure composed of a concave-shaped roll-formed part and a connecting plate. The upper chamber 1-1-2 and the lower chamber 1-1-3 of the concave-shaped roll-formed part can be controlled to a smaller size in the height direction, so that the middle chamber has a larger size in the height direction (when the height of the frame is fixed), avoiding the problem that when the traditional rectangular roll-formed part avoids explosion-proof valves or connectors, that is, when cutting avoidance holes, the horizontal ribs of the rectangular roll-formed part are difficult to cut and open holes, resulting in difficulties in arranging explosion-proof valves and connectors.

[0031] All frames of the frame body 1 can adopt a composite frame composed of a roll-formed part 1-1 and a connecting plate 1-2; of course, if there are no restrictions on weight and frame size, some frames (such as frames that need to set avoidance holes) can adopt the frame structure of the present utility model, and other frames can still adopt traditional steel-made roll-formed parts.

[0032] Since components such as a lifting beam 4 need to be connected to the frames on the periphery of the frame body 1, as Figure 1 shown, to ensure the connection strength: the roll-formed part 1-1 is arranged on the outside of the frame body 1, and the connecting plate 1-2 is located inside the frame body 1.

[0033] To facilitate the installation of explosion-proof valves or connectors, it is necessary to ensure that the middle chamber has sufficient dimensions in the height direction. The following scheme can be adopted: the structures and sizes of the upper chamber 1-1-2 and the lower chamber 1-1-3 are the same; in the height direction, the relationship between the height d1 of the upper chamber 1-1-2 and the height d2 of the middle chamber 1-2-1 is that d1 / d2 is between 1 / 5 - 1 / 4.

[0034] A clearance hole 1-3 is provided on the side of the frame body 1, and the clearance hole 1-3 passes through the middle cavity 1-2-1. The clearance hole 1-3 is opened according to the shape of the explosion-proof valve and connector. The dimension of the clearance hole 1-3 in the height direction is smaller than the height of the middle cavity 1-2-1, so the selection of the clearance hole 1-3 is less restricted by the frame structure of the frame body 1. The clearance hole 1-3 passes through the connecting plate 1-2 and the intermediate plate 1-1-1 in sequence.

[0035] To ensure the vertical strength of the frame: the relationship between the width d3 and the height d4 of the frame 1 is that d3 / d4 is between 1 / 4 and 1 / 3. A hoisting beam 4 is installed on the outside of the frame 1.

[0036] The two cavities of the connecting plate 1-2 and the roll forming component 1-1 can be connected using the following method: the cavity walls of the connecting plate 1-2 and the roll forming component 1-1 are connected by rivets. The connecting plate 1-2 can be made of aluminum alloy plate. The frame composed of the roll forming component and the connecting plate allows for flexible material selection and thickness determination of the connecting plate. Designing the connecting plate as an aluminum alloy plate helps reduce weight and avoids the problem that the battery casing frame may be too heavy while meeting strength requirements due to the high density of an all-steel frame, thus affecting the overall energy density of the battery pack.

Claims

1. A modular automotive battery frame, characterized in that, Includes a frame body, wherein the frame body (1) is composed of a battery compartment frame (2) and a component compartment frame (3); The frame (1) has a three-cavity structure arranged vertically. The frame is composed of a roller pressing component (1-1) and a connecting plate (1-2). The roller pressing component (1-1) is in the shape of a U-shaped plate rotated 90 degrees. It is composed of a middle plate (1-1-1), an upper cavity (1-1-2), and a lower cavity (1-1-3). The upper cavity (1-1-2) and the lower cavity (1-1-3) are located at both ends of the middle plate (1-1-1). The connecting plate (1-2) covers the U-shaped notch and forms a middle cavity (1-2-1) with the roller pressing component (1-1). The connecting plate (1-2) is connected to the upper cavity (1-1-2) and the lower cavity (1-1-3) respectively.

2. The combined automotive battery frame according to claim 1, characterized in that, In the outer frame of the frame body (1), the roll forming part (1-1) is located on the outside of the frame body (1), and the connecting plate (1-2) is located on the inside of the frame body.

3. The combined automotive battery frame according to claim 1, characterized in that, The upper cavity (1-1-2) and the lower cavity (1-1-3) have the same structure and size; in the height direction, the relationship between the height d1 of the upper cavity (1-1-2) and the height d2 of the middle cavity (1-2-1) is between 1 / 5 and 1 / 4.

4. The combined automotive battery frame according to claim 2, characterized in that, The frame body (1) has a clearance hole (1-3) on its side, which passes through the middle cavity (1-2-1); the clearance hole (1-3) is opened according to the shape of the explosion-proof valve or connector; the clearance hole (1-3) is smaller in height than the height of the middle cavity (1-2-1).

5. The combined automotive battery frame according to claim 1, characterized in that, The relationship between the border width d3 and height d4 of the frame body (1) is that d3 / d4 is between 1 / 4 and 1 / 3.

6. The combined automotive battery frame according to claim 1, characterized in that, A hoisting beam (4) is provided on the outside of the frame (1).

7. The combined automotive battery frame according to claim 1, characterized in that, The cavity walls of the two cavities of the connecting plate (1-2) and the roller pressing part (1-1) are connected by rivets.

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