vehicle

Abstract

To provide a vehicle which can achieve both of a wiring structure of wire harness and a vibration control structure of an upper case while saving space.SOLUTION: A vehicle comprises: a battery case; a frame member; and a wire harness. The battery case includes an upper case and a lower case, and houses a battery. The frame member faces the upper case. The upper case includes a first case-side portion. The frame member includes a first frame-side portion facing the first case-side portion. The wire harness is arranged to pass through a gap between the first case-side portion and the first frame-side portion and includes a coating part that is formed of an elastic member covering an outer periphery of the wire harness. The coating part contacts with the first case-side portion and the first frame-side portion, and the coating part is sandwiched between the first case-side portion and the first frame-side portion.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to a vehicle equipped with a battery pack. [Background technology]

[0002] Patent Document 1 discloses a vehicle equipped with a battery pack. In this vehicle, a cable is arranged inside an upper case of the battery pack. In addition, an elastic member is arranged between the upper case and the floor panel of the vehicle to prevent vibration of the upper case. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-113528 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the vehicle described in Patent Document 1, the cable (wire harness) is arranged inside a battery case having an upper case. Therefore, in this vehicle, it is necessary to establish a wiring structure for the wire harness and a vibration-proof structure for the upper case separately. As a result, a large space is required to achieve both of these structures.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a vehicle that is space-saving while achieving both a wire harness routing structure and an upper case vibration-proof structure. [Means for solving the problem]

[0006] A vehicle according to the present disclosure includes a battery case, a frame member, and a wire harness. The battery case includes an upper case and a lower case, and houses a battery. The frame member faces the upper case. The upper case includes a first case-side portion. The frame member includes a first frame-side portion facing the first case-side portion. The wire harness is disposed to pass through a gap between the first case-side portion and the first frame-side portion, and includes a covering portion formed by an elastic member that covers an outer periphery of the wire harness. The covering portion contacts the first case-side portion and the first frame-side portion, and is sandwiched between the first case-side portion and the first frame-side portion.

[0007] The vehicle may further include a damper member. The upper case may include a second case-side portion protruding toward the frame member. The frame member may include a second frame-side portion facing the second case-side portion and protruding toward the upper case. The damper member may be in contact with each of the second case-side portion and the second frame-side portion and may be sandwiched between the second case-side portion and the second frame-side portion.

[0008] The battery case may include a plurality of support parts disposed between the upper case and the lower case and supporting the upper case. The plurality of support parts may include a first support part supporting the first case side portion and a second support part different from the first support part supporting the second case side portion. Effect of the Invention

[0009] According to the vehicle of the present disclosure, it is possible to achieve both a wiring structure for the wire harness and a vibration-proof structure for the upper case while saving space. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram for explaining an example of a vehicle according to an embodiment. [Diagram 2]FIG. 2 is a diagram for explaining a basic structure regarding mounting of the battery pack shown in FIG. [Diagram 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] FIG. 3 is a cross-sectional view taken along line BB in FIG. [Diagram 5] 11A to 11C are diagrams illustrating other application examples of the wiring structure and the vibration-proof structure according to the embodiment. [Figure 6] 6A to 6C are diagrams illustrating a second vibration isolation structure according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The embodiments of the present disclosure will be described with reference to the accompanying drawings. In addition, elements common to the various drawings will be denoted by the same reference numerals, and duplicated descriptions will be omitted or simplified.

[0012] 1. Basic structure for mounting the battery pack 1 is a diagram for explaining an example of a vehicle 1 according to an embodiment. Note that the direction of "Fr" in FIG. 1 corresponds to the forward direction of the vehicle 1, and the direction of "UPR" corresponds to the upward direction of the vehicle 1.

[0013] The vehicle 1 shown in Fig. 1 is, for example, a battery electric vehicle (BEV). Alternatively, the vehicle 1 may be, for example, a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), or a fuel cell electric vehicle (FCEV). The vehicle 1 has a ladder frame structure. However, the vehicle 1 may be a vehicle that does not have a ladder frame structure, that is, for example, a vehicle that has a monocoque structure.

[0014] The vehicle 1 is equipped with a battery pack 10. The battery pack 10 stores electric power to be supplied to an electric motor that drives the vehicle 1. The battery pack 10 is mounted under the floor of the vehicle 1.

[0015] Fig. 2 is a diagram for explaining the basic structure regarding the mounting of the battery pack 10 shown in Fig. 1. Fig. 2 corresponds to a diagram showing the configuration around the battery pack 10 as viewed from above the vehicle 1. The direction of "RH" in Fig. 2 corresponds to the right direction of the vehicle 1.

[0016] The battery pack 10 includes a battery 12 and a battery case 14 that houses the battery 12. The battery 12 is, for example, a lithium ion secondary battery. The configuration of the battery 12 is not limited to a specific one. As an example, the battery 12 has a plurality of stacks (battery stacks) 12a) of a plurality of battery cells. Inside the battery case 14, the plurality of (e.g., six) battery stacks 12a are arranged side by side in the vehicle front-rear direction, for example, extending along the vehicle left-right direction. The battery case 14 includes an upper case 16 and a lower case 18 (see FIG. 3).

[0017] As shown in Fig. 2, the vehicle 1 is equipped with a ladder frame 2. The ladder frame 2 includes a pair of left and right side members 2a that correspond to a main frame, and cross members 2b and 2c that correspond to sub-frames. Each of the side members 2a is formed so as to extend along the front-rear direction of the vehicle 1. Each of the front cross member 2b and the rear cross member 2c is formed so as to extend in the left-right direction of the vehicle, and is connected to the pair of side members 2a.

[0018] Furthermore, the vehicle 1 includes one or more frame members 3. As an example, there are three frame members 3. Each of the frame members 3 is formed to extend in the left-right direction of the vehicle at a position between the front cross member 2b and the rear cross member 2c, and is connected to a pair of side members 2a. The frame member 3 may correspond to a cross member included in the ladder frame 2, or may be an additional member provided for mounting the battery pack 10.

[0019] The body (not shown) of the vehicle 1 is disposed above the ladder frame 2. On the other hand, as shown in Fig. 2, the battery case 14 is disposed below the ladder frame 2 at a position in the vehicle front-rear direction where the cross members 2b and 2c are present. Therefore, the upper case 16 has a portion facing the ladder frame 2 and the frame member 3.

[0020] The battery case 14 is attached to the vehicle 1 by using the ladder frame 2. More specifically, there is no particular limitation on the method of attaching the battery case 14 by using the ladder frame 2. That is, for example, the battery case 14 is fastened at any position to the ladder frame 2 or any support member (not shown) fixed to the ladder frame 2 by using fasteners (for example, a combination of bolts and nuts).

[0021] 2. Wire harness routing and upper case vibration isolation structure The vehicle 1 is equipped with various wire harnesses. Some of the wire harnesses, such as the wire harness 20 shown in Fig. 2, are arranged to pass around the battery pack 10. As an example, one end of the wire harness 20 is connected to a device such as a junction box or an electronic control unit (ECU) housed inside the battery pack 10.

[0022] In the vehicle 1, it is required that the wire harness 20 be arranged and fixed within a limited space. Furthermore, when the battery pack 10 is mounted under the floor of the vehicle 1, vibration of the upper case 16 may cause contact between the upper case 16 and components inside or around the battery pack 10, resulting in noise generation or damage to the components. Such vibration prevention measures are also required to be implemented within a limited space.

[0023] In view of the above-mentioned problems, the vehicle 1 of this embodiment is provided with the following wiring harness arrangement structure and upper case vibration-proof structure. B.B. FIG. 4 is a diagram showing a cross section of the line in FIG. AA FIG.

[0024] As shown in Fig. 3, the upper case 16 includes a first portion (first case portion) 16a. The frame member 3 includes a first portion (first frame portion) 3a facing the first portion 16a. Note that, as an example, the combination of the first portions 16a and 3a is provided in two locations on one frame member 3 as shown in Fig. 3, but may be provided in one location or three or more locations.

[0025] The wire harness 20 is arranged to pass through the gap between the first portion 16a and the first portion 3a. In the example shown in Fig. 3, a pair of wire harnesses 20a are arranged to pass through the gap between one of the first portions 16a and the first portion 3a, and one wire harness 20b is arranged to pass through the gap between the other of the first portions 16a and the first portion 3a.

[0026] The pair of wire harnesses 20a each have a covering portion 22. The covering portion 22 is formed of an elastic member (e.g., rubber) that covers the outer periphery of each wire harness 20a. The covering portion 22 is in contact with each of the first portion 16a and the first portion 3a, and is sandwiched between the first portion 16a and the first portion 3a. In other words, the covering portion 22 is supported while being compressed by being sandwiched between the first portion 16a and the first portion 3a. The same applies to the other covering portion 24.

[0027] More specifically, as shown in FIG. 3, the first portion 16a of the upper case 16 is formed to be recessed inward of the upper case 16 compared to the surrounding portions, and the first portion 3a of the frame member 3 is formed to be recessed inward of the frame member 3 compared to the surrounding portions. By having such a cross-sectional shape, the wire harness 20 can be guided into the gap between the first portion 16a and the first portion 3a and can be well positioned. In addition, the wire harness 20 can be routed while suppressing the height of the frame member 3 and the battery pack 10 in the vertical direction of the vehicle. Instead of such an example having a recessed shape, the first portion 16a may protrude toward the frame member 3 compared to the surrounding portions, or may have neither a recessed shape nor a protruding shape. This also applies to the first portion 3a on the frame member 3 side.

[0028] Furthermore, the battery case 14 includes a support member 26 (support portion) that supports the first portion 16a of the upper case 16. The support member 26 is disposed between the first portion 16a and the lower case 18. The support member 26 is disposed for each first portion 16a. More specifically, in the example of the battery case 14, the lower case 18 includes a battery cross member 18a that is formed between adjacent battery stacks 12a and extends parallel to the battery stacks 12a. The support member 26 is disposed between the battery cross member 18a and the first portion 16a. More specifically, one end of the support member 26 in the vehicle vertical direction is placed on the upper surface of the lower case 18 (battery cross member 18a). The other end of the support member 26 supports the surface opposite to the outer surface of the first portion 16a that faces the frame member 3.

[0029] As already described, the vehicle 1 includes, as an example, three frame members 3. Therefore, the wiring harness arrangement structure and the upper case vibration-proof structure using the first portions 16a and 3a are applied to each of the three frame members 3, as shown in FIG.

[0030] As described above, according to this embodiment, the wire harness 20 covered with the covering portion 22 or 24 formed of an elastic member is disposed so as to be sandwiched between the first portion 16a of the upper case 16 and the first portion 3a of the frame member 3. This makes it possible to achieve both a wiring structure for the wire harness and a vibration-proof structure for the upper case while saving space.

[0031] Moreover, the first portion 16a of the upper case 16 is supported by a support member 26 interposed between the first portion 16a and the lower case 18. Such a support structure allows the first portion 16a to be pressed against the covering portion 22 or 24 with high rigidity. This contributes to improving the vibration-proofing effect of the upper case 16.

[0032] 5(A) and 5(B) are diagrams showing other application examples of the wiring structure and the vibration-proof structure according to the embodiment.

[0033] 5(A) shows an example including one wire harness 28 passing around the battery pack 10. In this example, the wire harness 28 extends in the front-rear direction of the vehicle at the center in the left-right direction of the vehicle. In this example, in each of the three frame members 3, the wire harness 28 covered with a covering portion 30 formed of an elastic member is disposed so as to be sandwiched between the first portion 16a of the upper case 16 and the first portion 3a of the frame member 3.

[0034] 5(B) shows an example in which two wire harnesses 32 and 34 pass around the periphery of the battery pack 10. The wire harness 32 is arranged to extend in the front-rear direction of the vehicle along the gap between one side member 2a of the ladder frame 2 and the upper case 16. Similarly, the wire harness 34 is arranged to extend in the front-rear direction of the vehicle along the gap between the other side member 2a and the upper case 16.

[0035] In the example shown in FIG. 5(B), each of the pair of side members 2a corresponds to another example of the "frame member" according to the present disclosure. Therefore, in this example, the upper case 16 has a first portion 16a at a position facing the side member 2a, and the side member 2a has a first portion 2a1 facing the first portion 16a. The wire harness 34 covered with a covering portion 36 formed of an elastic member is disposed so as to be sandwiched between the first portion 16a and the first portion 2a1. The covering portion 36 may be provided so as to cover, for example, the entire first portions 16a and 2a1 in the vehicle front-rear direction, or a plurality of covering portions may be provided at predetermined intervals. The same applies to the configuration of the wire harness 34.

[0036] 3. Example with a second vibration-proof structure In order to further enhance the vibration-proofing effect of the upper case, the vehicle 1 may also be provided with a "second vibration-proofing structure" as follows, in addition to the wire harness routing structure and upper case vibration-proofing structure of the present embodiment described above (herein referred to as the "first vibration-proofing structure").

[0037] Fig. 6 is a diagram for explaining a second vibration-proof structure according to an embodiment. The example shown in Fig. 6 shows a cross section at the same position as in Fig. 3. In this example, the vehicle 1 is provided with a wiring structure and a first vibration-proof structure for the wire harness 20a, and also includes second portions 16b and 3b and a damper member 38 as the second vibration-proof structure.

[0038] As shown in FIG. 6, the second portion (second case side portion) 16b of the upper case 16 protrudes toward the frame member 3 side (more specifically, toward the second portion 3b side) compared to the surrounding portions. The second portion (second frame side portion) 3b of the frame member 3 faces the second portion 16b and protrudes toward the upper case 16 side (more specifically, toward the second portion 16b side) compared to the surrounding portions. The damper member 38 is, for example, rubber. The damper member 38 contacts each of the second portion 16b and the second portion 3b, and is sandwiched between the second portion 16b and the second portion 3b. More specifically, the damper member 38 is supported while being compressed by being sandwiched between the second portion 16b and the second portion 3b.

[0039] More specifically, in the example shown in FIG. 6, the battery case 14 includes a support member 40 (second support portion) that supports the second portion 16b of the upper case 16. The support member 40 is disposed between the second portion 16b and the lower case 18 (for example, the battery cross member 18a). In this manner, the second portion 16b is supported by the support member 40 (second support portion) that is different from the support member 26 (first support portion) that supports the first portion 16a. More specifically, like the support member 26, one end of the support member 40 in the vehicle vertical direction is placed on the upper surface of the lower case 18 (the battery cross member 18a). The other end of the support member 40 supports the surface opposite to the outer surface of the second portion 16b that faces the frame member 3. The support structure using the support member 40 allows the second portion 16b to be pressed against the damper member 38 with high rigidity. This also contributes to improving the vibration-proofing effect of the upper case 16.

[0040] According to the second vibration-proof structure described above, the damper member 38 is sandwiched between the second portion 16b and the second portion 3b that protrude toward each other. This makes it possible to more effectively suppress vibration of the upper case 16 while suppressing interference between the frame member 3 and the upper case 16 when the vehicle 1 collides.

[0041] The following is a supplementary explanation regarding the fact that interference between the frame member 3 and the upper case 16 can be suppressed during a collision. Unlike the above configuration, if the second portion 3b is formed to be recessed toward the frame member 3, it is necessary to make the second portion 16b protrude toward the frame member 3 to a large extent in order to make the size of the gap between the second portion 16b where the damper member 38 is disposed and the second portion 3b appropriate. As a result, the second portion 16b becomes close to the portion of the frame member 3 located around the second portion 3b. As a result, when an input acts on the frame member 3 from, for example, the left-right direction of the vehicle during a collision of the vehicle 1, interference between the frame member 3 and the upper case 16 is likely to occur. In contrast, the configuration shown in FIG. 6 makes it easier to suppress such interference.

[0042] 6, a first support part (support part 26) which is one of the multiple support parts (support members 26 and 40) is used for the wiring harness routing structure and the first vibration-proof structure. The second support part (support member 40) which is the other of the multiple support parts is used for the second vibration-proof structure. This structure makes it possible to achieve both space saving and suppression of interference between members (between the frame member 3 and the upper case 16).

[0043] 6, the combination of the wiring structure and the first vibration-proof structure and the second vibration-proof structure are applied to the same frame member 3. Instead of this example, the second vibration-proof structure may be applied to a frame member 3 different from the frame member 3 to which the combination of the wiring structure and the first vibration-proof structure is applied.

[0044] Furthermore, the above-described second vibration-proof structure may be applied to other positions of the frame member 3 and the upper case 16 (for example, a plurality of portions C represented by dashed lines in FIG. 2). [Explanation of symbols]

[0045]

[0033] 1 vehicle, 2 ladder frame, 2a pair of side members, 2a1, 3a first frame side portion, 2b, 2c cross member, 3 frame member, 3b second frame side portion, 10 battery pack, 12 battery, 14 battery case, 16 upper case, 16a first case side portion, 16b second case side portion, 18 lower case, 18a battery cross member, 20, 20a, 20b, 28, 32, 34 wire harness, 22, 24, 30, 36 covering portion, 26, 40 support member, 38 damper member

Claims

1. a battery case including an upper case and a lower case and housing a battery; a frame member facing the upper case; Wire harness and A damper member; A vehicle comprising: the upper case includes a first case side portion, the first case-side portion is formed to be recessed inwardly of the upper case compared to a case-side reference portion, which is a portion of the upper case that is continuous with the first case-side portion and faces the frame member, the frame member includes a first frame side portion opposed to the first case side portion, the first frame-side portion is formed to be recessed inward of the frame member compared to a frame-side reference portion, which is a portion of the frame member that is continuous with the first frame-side portion and faces the upper case, the wire harness is disposed so as to pass through a gap between the first case portion and the first frame portion, and includes a covering portion formed of an elastic member covering an outer periphery of the wire harness, the covering portion is in contact with the first case-side portion and the first frame-side portion and is sandwiched between the first case-side portion and the first frame-side portion, the upper case includes a second case side portion that protrudes toward the frame member relative to the case side reference portion in addition to the first case side portion, the frame member includes, in addition to the first frame side portion, a second frame side portion that faces the second case side portion and protrudes toward the upper case side compared to the frame side reference portion, The damper member is in contact with each of the second case-side portion and the second frame-side portion, and is sandwiched between the second case-side portion and the second frame-side portion. A vehicle characterized by:

2. the battery case includes a plurality of support portions that are disposed between the upper case and the lower case and support the upper case, The plurality of support portions include a first support portion that supports the first case side portion; a second support portion different from the first support portion and supporting the second case side portion; Includes 2. The vehicle according to claim 1 .

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