Vehicle battery and fuel tank mounting structure

Abstract

To provide a battery and a fuel tank mounting structure of a vehicle which enables improvement of weight balance in a vehicle width direction.SOLUTION: A battery and a fuel tank mounting structure of a vehicle of the invention includes: a floor panel forming a part of a floor part of a vehicle body; a pair of skeleton members extending in a vehicle fore and aft direction along left and right side edges as seen in a vehicle width direction of the floor panel; and a battery and a fuel tank which are arranged side-by-side in the vehicle width direction at the vehicle lower side relative to the floor panel and between the pair of skeleton members. The fuel tank is disposed at a center as seen in the vehicle width direction and the battery is disposed divided into left and right of the fuel tank in the vehicle width direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a mounting structure for a battery and a fuel tank of a vehicle. [Background technology]

[0002] Patent Document 1 describes a mounting structure for a vehicle battery and fuel tank, in which the battery and fuel tank are fixed to the vehicle floor via a pair of cross member brackets within a pair of side members so that they are in front of and close to the drive shaft. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-148749 Summary of the Invention [Problem to be solved by the invention]

[0004] If the battery and fuel tank are arranged side by side in the vehicle width direction, the difference in weight between the battery and fuel tank will disrupt the left and right weight balance, so there is room for improvement.

[0005] The present invention has been made in consideration of the above-mentioned problems, and its purpose is to provide a mounting structure for a vehicle battery and fuel tank that can improve the weight balance in the vehicle's width direction. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, the mounting structure for a vehicle battery and fuel tank of the present invention is a mounting structure for a vehicle battery and fuel tank comprising a floor panel that forms part of the floor portion of the vehicle body, a pair of skeletal members that extend in the fore-and-aft direction of the vehicle along the left and right side edges of the floor panel in the vehicle width direction, and a battery and fuel tank arranged side by side in the vehicle width direction on the lower side of the floor panel and between the pair of skeletal members, characterized in that the fuel tank is arranged in the center of the vehicle width direction and the battery is arranged divided on the left and right sides of the fuel tank in the vehicle width direction.

[0007] This reduces the weight difference in the vehicle width direction, improving the weight balance in the vehicle width direction.

[0008] In addition, the mounting structure for a vehicle battery and fuel tank of the present invention is a mounting structure for a vehicle battery and fuel tank that includes a floor panel that forms part of the floor portion of the vehicle body, a pair of skeletal members that extend in the fore-and-aft direction of the vehicle along the left and right side edges of the floor panel in the vehicle width direction, and a battery and fuel tank that are arranged side by side in the vehicle width direction on the lower side of the floor panel and between the pair of skeletal members, and is characterized in that the battery is arranged in the center of the vehicle width direction and the fuel tank is arranged divided on the left and right sides of the battery in the vehicle width direction.

[0009] This reduces the weight difference in the vehicle width direction, improving the weight balance in the vehicle width direction.

[0010] In addition, in the above, the battery may be stored in a battery case having a lower case and an upper case, the lower case may be fixed to the pair of frame members in the vehicle width direction via an impact absorbing member, and the fuel tank may be arranged on the lower case.

[0011] This improves the crashworthiness of the vehicle in the event of a side collision, and protects the battery and fuel tank.

[0012] In the above, a cooler for cooling the battery may be provided in the lower case, and the fuel tank may be disposed on the lower case via a heat insulating member.

[0013] This reduces the heat received by the cooler provided in the lower case from the fuel tank, improving the battery cooling performance of the cooler. [Effects of the Invention]

[0014] The vehicle battery and fuel tank mounting structure according to the present invention has the effect of reducing the weight difference in the vehicle width direction, thereby improving the weight balance in the vehicle width direction. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of a mounting structure for a battery and a fuel tank of a vehicle according to the first embodiment. [Figure 2] FIG. 2 is a diagram showing a schematic configuration of a mounting structure for a battery and a fuel tank of a vehicle according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0016] (Embodiment 1) A first embodiment (Embodiment 1) of the vehicle battery and fuel tank mounting structure according to the present invention will be described below, although the present invention is not limited to this embodiment.

[0017] FIG. 1 is a diagram showing a schematic configuration of a mounting structure 1 for a battery and a fuel tank of a vehicle according to an embodiment. As shown in FIG. 1, the mounting structure 1 for a battery and a fuel tank of a vehicle (hereinafter simply referred to as the mounting structure 1) has a vehicle body floor portion 4 that defines the floor of the passenger compartment of the vehicle. The floor portion 4 includes a floor panel 41 that forms part of the floor portion 4 and defines the bottom surface of the floor portion 4, and multiple skeletal members that are disposed on the floor panel 41 and extend in the vehicle longitudinal direction or the vehicle transverse direction. The skeletal members include a pair of rockers 5A and 5B that extend in the vehicle longitudinal direction along the left and right side edges of the floor portion 4, and a floor cross member 42 that extends in the vehicle transverse direction to connect the rockers 5A and 5B. EA members 6A and 6B that are impact absorbing members that extend in the vehicle longitudinal direction are disposed at the lower ends of the rockers 5A and 5B. Furthermore, on the vehicle lower side of the floor panel 41 and between the lockers 5A and 5B, batteries 23A and 23B (battery packs 2A and 2B) and a fuel tank 3 are arranged side by side in the vehicle width direction.

[0018] The batteries 23A, 23B are housed in respective battery cases having a shared lower case 20 and upper cases 21A, 21B, and the respective battery cases and the batteries 23A, 23B constitute battery packs 2A, 2B. The battery 23 is formed, for example, by a battery module in which a plurality of battery cells are arranged in an arrangement direction. The upper cases 21A, 21B are case members that cover the batteries 23A, 23B from above the vehicle. The lower case 20 is a case member that supports the batteries 23A, 23B from below the vehicle. The lower case 20 is disposed extending in the vehicle width direction so as to connect the EA members 6A, 6B, and is fixed to the rockers 5A, 5B via the EA members 6A, 6B. In the mounting structure 1 according to the first embodiment, the fuel tank 3 is disposed on the lower case 20.

[0019] In the mounting structure 1 according to the first embodiment, in the event of a vehicle side collision, the floor panel 41 and the floor cross member 42 brace the vehicle upper side between the rockers 5A and 5B, and the lower case 20 braces the vehicle lower side. Therefore, in the mounting structure 1 according to the first embodiment, in addition to the floor panel 41 and the floor cross member 42, the lower case 20 of the battery pack 2 functions as a member that increases the rigidity of the vehicle body. Therefore, in the mounting structure 1 according to the first embodiment, in the event of a vehicle side collision, the floor panel 41 and the floor cross member 42 brace the vehicle upper side between the rockers 5A and 5B, and the lower case 20 braces the vehicle lower side, thereby improving the collision performance in the event of a vehicle side collision and protecting the batteries 23A, 23B (battery packs 2A, 2B) and the fuel tank 3.

[0020] Furthermore, in general, when a battery and a fuel tank are mounted on a vehicle, the weight of the battery is heavier than the weight of the fuel tank. Therefore, in the mounting structure 1 according to the first embodiment, as shown in Fig. 1, the fuel tank 3 is disposed in the center of the vehicle width direction, and the batteries 23A, 23B are disposed on the left and right sides of the fuel tank 3 in the vehicle width direction. This reduces the weight difference in the vehicle width direction, and improves the weight balance of the vehicle in the vehicle width direction.

[0021] It is preferable to use batteries 23A, 23B with the same configuration (size, weight, etc.), but this is not limited to this. For example, batteries 23A, 23B may have different configurations (size, weight, etc.) as long as the weight difference in the vehicle width direction is smaller than in a configuration in which the battery is located closer to one outer side in the vehicle width direction and the fuel tank is located closer to the other outer side in the vehicle width direction. Even in this case, the weight balance of the vehicle in the vehicle width direction can be improved to the extent that the weight difference in the vehicle width direction can be reduced.

[0022] 1, in the mounting structure 1 according to the first embodiment, coolers 7A, 7B that cool batteries 23A, 23B are provided in the lower case 20, and the fuel tank 3 is disposed above the lower case 20 via a heat insulating material 30. This prevents the coolers 7A, 7B provided in the lower case 20 from receiving heat from the fuel tank 3, and improves the cooling performance of the coolers 7A, 7B for the batteries 23A, 23B.

[0023] (Embodiment 2) A second embodiment (Embodiment 2) of the vehicle battery and fuel tank mounting structure according to the present invention will be described below. Note that the description of the second embodiment common to the first embodiment will be omitted where appropriate.

[0024] Fig. 2 is a diagram showing a schematic configuration of a mounting structure 1 for a battery and a fuel tank for a vehicle according to embodiment 2. In the mounting structure 1 for a battery and a fuel tank for a vehicle according to embodiment 2 (hereinafter simply referred to as mounting structure 1), as shown in Fig. 2, a battery 23 (battery pack 2) and fuel tanks 3A and 3B are arranged side by side in the vehicle width direction on the vehicle lower side of floor panel 41 and between lockers 5A and 5B.

[0025] The battery 23 is housed in a battery case having a lower case 20 and an upper case 21, and the battery case and the battery 23 form a battery pack 2. The battery 23 is formed, for example, by a battery module in which a plurality of battery cells are arranged in an arrangement direction. The upper case 21 is a case member that covers the battery 23 from above the vehicle. The lower case 20 is a case member that supports the battery 23 from below the vehicle. The lower case 20 is disposed extending in the vehicle width direction so as to connect the EA members 6A and 6B, and is fixed to the rockers 5A and 5B via the EA members 6A and 6B. In the mounting structure 1 according to the second embodiment, the fuel tanks 3A and 3B are disposed on the lower case 20.

[0026] 2, in the mounting structure 1 according to the second embodiment, the battery 23 is disposed in the center of the vehicle width direction, and the fuel tanks 3A, 3B are disposed on the left and right sides of the battery 23 in the vehicle width direction, which reduces the weight difference in the vehicle width direction and improves the weight balance of the vehicle in the vehicle width direction.

[0027] It is preferable to use fuel tanks 3A, 3B with the same configuration (size, weight, etc.), but this is not limited to this. For example, the configurations (size, weight, etc.) of fuel tanks 3A, 3B may be different as long as the weight difference in the vehicle width direction is smaller than in a configuration in which the battery is located on one side closer to the outside in the vehicle width direction and the fuel tank is located on the other side closer to the outside in the vehicle width direction. Even in this case, the weight balance of the vehicle in the vehicle width direction can be improved to the extent that the weight difference in the vehicle width direction can be reduced.

[0028] 2, in the mounting structure 1 according to the second embodiment, a cooler 7 that cools the battery 23 is provided in the lower case 20, and fuel tanks 3A, 3B are arranged on the lower case 20 via heat insulating materials 30A, 30B. This prevents the cooler 7 provided in the lower case 20 from receiving heat from the fuel tank 3, and improves the cooling performance of the cooler 7 for the battery 23. [Explanation of symbols]

[0029] 1 Mounting structure 2, 2A, 2B battery pack 3, 3A, 3B fuel tanks 4 Floor section 5A, 5B Lockers 6A,6B EA material 7, 7A, 7B 20 Lower case 21, 21A, 21B upper case 23,23A,23B battery 30, 30A, 30B Insulation 41 Floor Panel 42 Floor cross member

Claims

1. A floor panel that constitutes a part of the floor portion of the vehicle body; a pair of frame members extending in the vehicle front-rear direction along left and right side edges of the floor panel in the vehicle width direction; a floor cross member disposed on the floor panel and extending in the vehicle width direction so as to connect the pair of frame members; a battery and a fuel tank arranged side by side in a vehicle width direction below the floor panel and between the pair of frame members; A mounting structure for a battery and a fuel tank of a vehicle, The fuel tank is disposed at the center of the vehicle width direction, and the battery is disposed on the left and right sides of the fuel tank in the vehicle width direction, the battery is housed in a battery case having a lower case and an upper case, the lower case is fixed to the pair of frame members via an impact absorbing member in the vehicle width direction, The fuel tank is disposed on the lower case, In the event of a side collision of the vehicle, the floor panel and the floor cross member are braced at an upper side of the vehicle between the pair of frame members, and the lower case is braced at a lower side of the vehicle. A vehicle battery and fuel tank mounting structure characterized by the above.

2. A floor panel that constitutes a part of the floor portion of the vehicle body; a pair of frame members extending in the vehicle front-rear direction along left and right side edges of the floor panel in the vehicle width direction; a floor cross member disposed on the floor panel and extending in the vehicle width direction so as to connect the pair of frame members; a battery and a fuel tank arranged side by side in a vehicle width direction below the floor panel and between the pair of frame members; A mounting structure for a battery and a fuel tank of a vehicle, The battery is disposed at the center of the vehicle width direction, and the fuel tank is disposed so as to be divided into left and right sides of the battery in the vehicle width direction, the battery is housed in a battery case having a lower case and an upper case, the lower case is fixed to the pair of frame members via an impact absorbing member in the vehicle width direction, The fuel tank is disposed on the lower case, In the event of a side collision of the vehicle, the floor panel and the floor cross member are braced at an upper side of the vehicle between the pair of frame members, and the lower case is braced at a lower side of the vehicle. A vehicle battery and fuel tank mounting structure characterized by the above.

3. a cooler that cools the battery is provided in the lower case, 3. The vehicle battery and fuel tank mounting structure according to claim 1, wherein the fuel tank is disposed on the lower case via a heat insulating member.

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