Battery supporting structure

Abstract

To provide a battery supporting structure which facilitates temperature management of a battery module.SOLUTION: A battery supporting structure has a supporting unit C which supports, on a frame body F, a battery B disposed in a battery housing space BS located inside the metal frame body F. The frame body F is provided with a protruding part 26 which protrudes into the battery housing space BS. The supporting unit C has: a metal supporting bracket 21a which supports the battery B; an interposed part 25 which is fixed to the supporting bracket 21a; and a fastening member 28 which fastens the interposed part 25 to the protruding part, and which is spaced away from the supporting bracket 21a. The heat conductivity of the interposed part 25 is lower than that of the fastening member 28.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a support structure for a battery. [Background technology]

[0002] In vehicles that require electric power, such as electric vehicles (EVs), a configuration is often adopted in which a heavy battery module (referred to as a battery module in the document) is placed under the floor of the vehicle body, as described in Patent Document 1.

[0003] Patent Document 1 discloses a configuration in which a panel-shaped guard member is disposed between a pair of vehicle body frames, and fastening portions of this guard member are connected to the pair of vehicle body frames to fix the guard member to the vehicle body frames.

[0004] In this patent document, a case body that houses a battery module is supported on the upper surface of a guard member. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2020-183222 A Summary of the Invention [Problem to be solved by the invention]

[0006] In a battery module having a plurality of battery cells, for example, when the temperature of the battery cells drops, the output of the battery module drops, resulting in a reduction in the cruising distance of the vehicle.

[0007] It is important that the battery module be maintained at an optimal temperature in terms of maintaining high output performance. However, in the configuration described in Patent Document 1 in which the battery module is mounted on a guard member supported by a fastening portion on the vehicle body frame, heat is transferred between the vehicle body frame and the battery module, making it difficult to manage the temperature of the battery module.

[0008] For these reasons, there is a need for a battery support structure that facilitates temperature management of the battery. [Means for solving the problem]

[0009] A characteristic configuration of the battery support structure of the present invention is a battery support structure including a support unit that supports a battery arranged in a battery storage space located inside a metal frame body on the frame body, wherein the frame body has a protrusion that protrudes into the battery storage space, and the support unit has a metal support bracket that supports the battery, an intervening member fixed to the support bracket, and a fastening member that fastens the intervening member to the protrusion and is spaced apart from the support bracket, and the thermal conductivity of the intervening member is lower than the thermal conductivity of the fastening member.

[0010] According to this configuration, the battery can be supported on the frame body by fastening the intervening member formed on the metal bracket supporting the battery to the protruding portion of the frame body with the fastening member. In this supported state, the intervening member is disposed between the metal bracket and the protruding portion, and the fastening member is spaced apart from the support bracket, so that heat conduction between the protruding portion and the bracket is suppressed, and the effect of heat transmitted from the frame body is suppressed, so that the temperature of the battery can be controlled. In particular, since the thermal conductivity of the intervening member is lower than that of the fastening member, the suppression of heat conduction can be maintained even in a situation where, for example, the intervening member is in close contact with the bracket due to the fastening force of the fastening member. Thus, a battery support structure that facilitates temperature control of the battery has been obtained. [Brief description of the drawings]

[0011] [Figure 1] FIG. 4 is a plan view showing the arrangement of the battery relative to the body frame. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Diagram 3] FIG. 4 is an enlarged cross-sectional view of the support unit. [Figure 4] FIG. 4 is a perspective view showing the shape of a support unit. [Diagram 5] 2 is a cross-sectional view taken along line VV in FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the battery support structure according to the present invention will be described with reference to the drawings. However, in the following embodiment, the shape and structure of the vehicle body frame F (one example of a frame body) and the battery module B are not limited to the embodiment, and various modifications are possible without departing from the gist of the embodiment.

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. [Basic configuration] As shown in FIG. 1, a vehicle A capable of running on electricity is configured by having left and right front wheels 1 and left and right rear wheels 2 on a metal body frame F (an example of a frame body) made of steel, having multiple (two in this embodiment) battery modules B (an example of a battery) in the center of the body frame F, and having a drive unit 3 at the rear of the body frame F that drives the rear wheels 2.

[0014] The vehicle A is configured as a hybrid vehicle (HEV: Hybrid Electric Vehicle), a plug-in hybrid vehicle (PHEV: Plug-in Hybrid Electric Vehicle), a battery vehicle (BEV: Battery Electric Vehicle), a fuel cell electric vehicle (FCEV: Fuel Cell Electric Vehicle), etc. The drive unit 3 includes an electric motor, an inverter that converts current supplied from a battery module B and supplies it to the electric motor, and a reduction gear case that houses reduction gears and the like that transmit the driving force of the electric motor to the left and right rear wheels 2.

[0015] Fig. 1 shows a body frame F, and vehicle A has a cabin (not shown) disposed in the center of the body. As shown in Figs. 2 and 5, vehicle A accommodates two battery modules B arranged in parallel in the front-rear direction of the vehicle in a battery accommodating space BS formed under the cabin. The battery accommodating space BS is formed under a floor panel 5 that forms the floor of the cabin, and above a share panel 6 that covers the underside of the body frame F.

[0016] 1 to 5, two battery modules B are supported in a placed state on a support plate 21 made of aluminum, iron, etc. The support plate 21 is supported on a vehicle body frame F via a support unit C.

[0017] The support plate 21 has a plurality of support brackets (first bracket 21a, second bracket 21b) formed integrally with a bottom plate supporting the battery module B, and these support brackets are provided with block-shaped heat insulating members 25 (an example of an intervening member). The support unit C has a configuration including the heat insulating member 25, and when the support plate 21 is supported on the vehicle body frame F by this support unit C, heat conduction between the vehicle body frame F and the support plate 21 is suppressed, achieving good temperature management of the battery module B. Details of the support unit C will be described later.

[0018] [Vehicle frame] As shown in FIG. 1, a vehicle body frame F (an example of a frame body) is provided with a left side frame 11 and a right side frame 12 arranged on the left and right sides in the vehicle width direction and extending in the front-to-rear direction of the vehicle, as well as a plurality of front cross frames 13 and a plurality of rear cross frames 14 that extend in the vehicle width direction with both ends connected to the left and right side frames 11 and 12.

[0019] The left side frame 11, the right side frame 12, the multiple front cross frames 13, and the multiple rear cross frames 14 are made of square pipe-shaped steel materials, and the vehicle body frame F is formed by connecting these by welding as shown in FIG.

[0020] In addition, in vehicle A, whose body is constructed by spot welding multiple pressed steel plates, such as a monocoque structure, the body frame F has spaces created between the multiple steel plates joined by spot welding, and is constructed as a structural part that functions as a strength member.

[0021] As shown in FIG. 1, the left side frame 11 and the right side frame 12 each include a front member portion Fm at the front, a center member portion Cm at the center, and a rear member portion Rm at the rear, which are formed in series.

[0022] In this vehicle body frame F, the distance between the left side frame 11 and the right side frame 12 at the position of the center member portion Cm is greater than the distance between the front member portion Fm and the rear member portion Rm.

[0023] 1 and 2, the body frame F is provided with an energy absorbing portion 16 at a position overlapping the lower side of the center member portion Cm. The energy absorbing portion 16 is formed with a plurality of spaces 16a extending in the front-rear direction of the vehicle.

[0024] The energy absorbing portion 16 functions as an impact absorbing portion that absorbs impact by deforming when it comes into contact with, for example, another vehicle or a guardrail, etc. The energy absorbing portion 16 is not limited to being made of steel, and can also be made of aluminum.

[0025] [Battery storage space] As described above, the battery accommodating space BS is formed in the area below the floor panel 5 and above the share panel 6. In particular, as shown in Figures 1, 2 and 5, this battery accommodating space BS is formed between the center member portions Cm of the left side frame 11 and the right side frame 12, between the front cross frame 13 at the front position and the rear cross frame 14 at the rear position.

[0026] [Battery storage space: protruding part] The body frame F is formed with a plurality of protrusions 26, 27 that protrude into the battery housing space BS. As shown in Figures 1, 2, and 5, the left side frame 11 and the right side frame 12 each have a plurality (two in this embodiment) of first protrusions 26 (an example of a protrusion). In addition, the front cross frame 13 and the rear cross frame 14 each have one or a plurality of second protrusions 27 (an example of a protrusion).

[0027] These first protruding portion 26 and second protruding portion 27 are made of steel, and are fixed to the corresponding left side frame 11, right side frame 12, front cross frame 13, and rear cross frame 14 by welding, respectively.

[0028] A support surface is formed on the upper surface of the first protruding portion 26 and the second protruding portion 27. In addition, as shown in Fig. 4, the first protruding portion 26 has a first screw hole 26a that penetrates the support surface in the vertical direction, and the second protruding portion 27 has a second screw hole 27a that penetrates the support surface in the vertical direction.

[0029] [Battery storage space: support plate] 2, 3 and 5, the battery module B is placed on the upper surface of a support plate 21 made of aluminum, steel or the like, via a thermally conductive sheet 22. The support plate 21 is supported by the left side frame 11 and the right side frame 12 via a plurality of support units C (four in this embodiment), and is also supported by the front cross frame 13 and the rear cross frame 14 located adjacent to the battery accommodating space BS via a plurality of support units C (two in this embodiment). In this embodiment, the support plate 21 also serves as a bottom plate.

[0030] As shown in FIG. 2, the support plate 21 has a flow path forming plate 23 on its bottom surface, and by flowing a cooling fluid (cooling water, insulating oil, etc.) through the flow path space 23a formed in this flow path forming plate 23, it is possible to adjust the temperature of the battery module B.

[0031] Although not shown in the drawings, the vehicle A is equipped with a temperature sensor that detects the temperature of the battery module B, a pump that circulates the cooling fluid in the flow path space 23a, a temperature control unit that dissipates heat and heats the cooling fluid, a control device that drives the pump, etc. The control device sets the temperature of the cooling fluid with the temperature control unit so as to maintain the temperature detected by the temperature sensor at a target temperature.

[0032] Further, a plurality of heat insulating blocks 4 made of foamed resin are fitted into the battery accommodating space BS in the area surrounding the battery module B. The heat insulating blocks 4 suppress the conduction of heat between the battery module B and the external environment, thereby suppressing the temperature change of the battery module B.

[0033] 1 to 3, the support plate 21 has a first bracket 21a (an example of a support bracket) protruding outward from both ends in the vehicle width direction. Similarly, as shown in Fig. 1 and Fig. 5, the support plate 21 has a second bracket 21b protruding outward from both ends in the vehicle front-rear direction.

[0034] The first bracket 21a and the second bracket 21b are bent and molded in a stepped shape as shown in Figures 3 and 4. The heat insulating member 25 (intervening member) is made of resin, and is fixed to the support brackets (first bracket 21a, second bracket 21b) by a resin insert molding technique in which the stepped portions of the support brackets are inserted into the resin. The heat insulating member 25 has a horizontal contact surface formed on the lower surface, and a through hole 25a penetrating in the vertical direction of the vehicle.

[0035] The first protrusion 26 is disposed at a position adjacent to the first bracket 21a, and the second protrusion 27 is disposed at a position adjacent to the second bracket 21b. Note that Fig. 4 shows the concept of a structure in which the heat insulating member 25 is fastened to the first protrusion 26 and the second protrusion 27 with bolts 28, and since the structure for fastening the heat insulating member 25 is common, different reference symbols are used for each member in the figure.

[0036] [Battery storage space: battery module] 2 and 3, the battery module B has a configuration in which a plurality of battery cells 7a are housed in a battery case 7 made of aluminum, steel, etc. The battery case 7 has a protrusion 7P that protrudes in the vehicle width direction.

[0037] As shown in FIG. 5, the two battery modules B are provided with first support members 8 on adjacent wall surfaces (opposing wall surfaces in the middle of the two battery modules B) of each battery case 7 in the vehicle fore-and-aft direction when accommodated in the battery accommodating space BS.

[0038] Furthermore, when the two battery modules B are accommodated in the battery accommodating space BS, second support members 9 are provided on the front surface of the battery case 7 of the battery module B on the front side in the vehicle front-rear direction (left side in FIG. 5) and on the rear surface of the battery case 7 of the battery module B on the rear side in the vehicle front-rear direction (right side in FIG. 5). These two second support members 9 are disposed at positions overlapping with the second bracket 21b in a plan view.

[0039] The protrusion 7P and the first bracket 21a are disposed at positions where they overlap in a plan view. A first protrusion 26 is formed on each of the left side frame 11 and the right side frame 12 in the direction in which they protrude.

[0040] 5, in the battery accommodating space BS, a metal intermediate restricting member 31 is disposed between two battery modules B on the upper surface of the support plate 21. In addition, in the battery accommodating space BS, a metal reinforcing member 32 is disposed between the upper surface of the share panel 6 and the lower surface of the support plate 21.

[0041] The intermediate regulating member 31 and the reinforcing member 32 are disposed at positions overlapping the gap between the two battery modules B in a plan view.

[0042] The shear panel 6 has a resin heat-insulating support 33 disposed on the upper surface thereof and is fixed by a metal (basically steel) intermediate bolt 34 that penetrates the shear panel 6. The reinforcing member 32 has its lower end fixed to the heat-insulating support 33 and its upper end connected to the lower surface of the support plate 21.

[0043] [Support form of battery module] As shown in Figures 2 to 4, the two battery modules B are supported on the vehicle body frame F (left side frame 11, right side frame 12) by abutting the abutment surface of the insulation member 25 against the support surface of the first protrusion 26 arranged in the vehicle width direction, and fastening the bolt 28 (an example of a fastening member) inserted into the through hole 25a of the insulation member 25 by screwing it into the first screw hole 26a of the first protrusion 26.

[0044] Furthermore, as shown in Figures 4 and 5, the battery module B is supported on the vehicle body frame F (front cross frame 13, rear cross frame 14) by abutting the abutment surface of the insulation member 25 against the support surface of a pair of second protrusions 27 arranged in the fore-and-aft direction of the vehicle, and fastening the bolt 28 (fastening member) inserted into the through hole 25a of the insulation member 25 by screwing it into the second screw hole 27a of the second protrusion 27.

[0045] That is, the first bracket 21a, the heat insulating member 25, the first protrusion 26, and the bolt 28 constitute a support unit C disposed in the vehicle width direction with the support plate 21 as a reference. Similarly, the second bracket 21b, the heat insulating member 25, the second protrusion 27, and the bolt 28 constitute a support unit C disposed in the vehicle front-rear direction with the support plate 21 as a reference.

[0046] In the support unit C, the thermal conductivity of the heat insulating member 25 is lower than the thermal conductivity of the bolt 28 (fastening member). Furthermore, in the support unit C, when the heat insulating member 25 is fastened to the first protruding portion 26 (protruding portion) by the bolt 28, the bolt 28 is separated from the first bracket 21a (support bracket) in the vehicle width direction.

[0047] Similarly, in the support unit C, when the heat insulating member 25 is fastened to the second protruding portion 27 (protruding portion) by the bolt 28, the bolt 28 is separated from the second bracket 21b (support bracket) in the vehicle front-rear direction. In this manner, the positional relationship is set such that the metallic bolt 28 and the support bracket (the metallic first bracket 21a or the second bracket 21b) do not come into direct contact with each other.

[0048] 3, at the end of the support unit C in the vehicle width direction, the heat insulating member 25 abuts against the support surface of the first protrusion 26, thereby supporting the weight of the battery module B with the first protrusion 26. In this supporting form, the protrusion 7P of the battery case 7 abuts against the upper surface of the heat insulating member 25, thereby supporting part of the weight of the battery module B with the first protrusion 26 via the heat insulating member 25, as shown in FIG.

[0049] 5, at the end of the support unit C in the vehicle front-rear direction, the heat insulating member 25 abuts against the support surface of the second protrusion 27, thereby supporting the weight of the battery module B with the second protrusion 27. In this supporting form, the second support member 9 abuts against the upper surface of the heat insulating member 25, thereby supporting part of the weight of the battery module B with the second protrusion 27 via the heat insulating member 25.

[0050] 5, when two battery modules B are housed in the battery accommodating space BS, the pair of first support members 8 abut against the upper ends of the intermediate regulating members 31. The intermediate regulating members 31 are structures that protrude upward from the upper surface of the support plate 21. A reinforcing member 32 is disposed below the intermediate regulating member 31, and the lower end of the reinforcing member 32 is supported by a heat insulating support 33 on the upper surface of the share panel 6. The heat insulating support 33 is supported by the share panel 6 by intermediate bolts 34.

[0051] In this way, part of the weight of the two battery modules B is received by the share panel 6 via the intermediate restraining member 31, the reinforcing member 32, and the heat-insulating support 33. This allows the support plate 21 to maintain a flat state without causing deformation in the form of the intermediate region of the two battery modules B bending downward. In addition, because the lower end of the reinforcing member 32 is supported by the share panel 6 via the heat-insulating support 33, the inconvenience of the heat of the share panel 6 affecting the two battery modules B is also eliminated.

[0052] [Effects of the embodiment] Although the battery module B is supported by a support plate 21 made of aluminum, steel, or the like, this support plate 21 is supported on the vehicle body frame F via the support unit C, which suppresses heat conduction between the vehicle body frame F and the support plate 21 and reduces the effects of external heat, enabling efficient temperature management of the battery module B. In particular, since the bolts 28 and the support brackets (first bracket 21a, second bracket 21b) are in a positional relationship in which they are spaced apart, heat conduction between the battery module B and the vehicle body frame F is suppressed, and the effects of heat from the vehicle body frame F are reduced.

[0053] The vehicle body frame F is an example of a frame body. The frame body is configured as a metal member disposed adjacent to the battery accommodating space BS, and includes not only the vehicle body frame F but also a battery case that accommodates the battery B, or a member that serves both as the vehicle body frame F and a case that accommodates the battery B.

[0054] The support unit C is formed integrally with the support brackets (first bracket 21a, second bracket 21b) formed integrally with the support plate 21 using an insert technique to insert an insulating member 25 (intervening member) made of resin into the curved portions of the support brackets, thereby achieving a strong connection between the brackets and the insulating member 25.

[0055] The battery module B is connected to the vehicle body frame F by the abutment surfaces of the block-shaped insulating member 25 abutting against the support surfaces of the protrusions (first protrusion 26, second protrusion 27) and fastening the insulating member 25 with bolts 28. In this type of connection, the protrusion 7P of the battery case 7 abuts against the upper surface of the insulating member 25 (see FIG. 3), and the second support member 9 of the battery case 7 abuts against the upper surface of the insulating member 25 (see FIG. 5), thereby reducing the load acting on the support brackets (first bracket 21a, second bracket 21b) formed integrally with the support plate 21.

[0056] The intermediate regulating member 31, the support plate 21, the reinforcing member 32, the heat insulating support body 33, and the share panel 6 are arranged so as to overlap one another vertically. Due to this positional relationship, the first support members 8 provided on each of the two battery modules B abut against the upper ends thereof, thereby supporting the weight of the battery modules B.

[0057] [Another embodiment] The present invention may be configured as follows other than the above-described embodiment (common numbers and symbols as in the embodiment are used to designate components having the same functions as in the embodiment).

[0058] (a) The support plate 21 and a bottom plate that supports the battery (battery module B) are stacked together. In this configuration, the weight of the battery (battery module B) can be supported by the support plate 21 and the bottom plate, which improves the support strength for the battery.

[0059] (b) It is possible to form the support brackets (first bracket 21a, second bracket 21b) on the bottom plate that supports the battery (battery module B), or to form the support brackets (first bracket 21a, second bracket 21b) on the battery module B (battery). In such a configuration, it is possible to reduce the number of parts compared to a configuration in which the support brackets (first bracket 21a, second bracket 21b) are formed on the support plate 21.

[0060] (c) As a means for fixing the heat insulating member 25 (intervening member) to the support brackets (first bracket 21a, second bracket 21b), for example, it is possible to use an adhesive or to press-fit the support brackets into the heat insulating member 25.

[0061] (d) The fastening members are not limited to the bolts 28 and may be rivets.

[0062] (e) It is also possible to configure a support structure in which the energy absorbing portion 16 is integrated with the vehicle body frame F, a protrusion is formed on this energy absorbing portion 16, and the battery is supported on this protrusion via a heat insulating member 25 (intervening member).

[0063] (f) The battery module B may be a single one, or may be three or more in number.

[0064] (g) The insulating block 4 may be omitted, and the area surrounding the battery module B may be made into an air insulating space.

[0065] (h) As partially explained above, when a member that serves as both the vehicle body frame F and a case for accommodating the battery B is used as the frame body, the battery module B can be configured to be supported on this member via a support unit C.

[0066] Furthermore, the configurations disclosed in the above embodiments (including other embodiments, the same applies below) can be applied in combination with configurations disclosed in other embodiments, provided that no contradiction arises. Furthermore, the embodiments disclosed in this specification are merely examples, and the embodiments of the present invention are not limited thereto, and can be appropriately modified within the scope that does not deviate from the purpose of the present invention.

[0067] In the above-described embodiment, the following configurations are envisaged. (1) A battery support structure including a support unit C that supports a battery (battery module B) arranged in a battery storage space BS located inside a metal frame body (body frame F) on the frame body (body frame F), wherein the frame body (body frame F) is formed with protrusions (first protrusion 26, second protrusion 27) that protrude into the battery storage space BS, and the support unit C includes metal support brackets (first bracket 21a, second bracket 21b) that support the battery (battery module B), an intervening member (insulating member 25) fixed to the support brackets (first bracket 21a, second bracket 21b), and a fastening member (bolt 28) that fastens the intervening member (insulating member 25) to the protrusions (first protrusion 26, second protrusion 27) and is spaced apart from the support brackets, and the thermal conductivity of the intervening member (insulating member 25) is lower than the thermal conductivity of the fastening member (bolt 28).

[0068] According to this configuration, the battery (battery module B) can be supported on the frame body (vehicle body frame F) by fastening the intervening member (thermal insulation member 25) integrally formed with the metal support bracket that supports the battery (battery module B) to the protruding portion (first protruding portion 26, second protruding portion 27) of the frame body (vehicle body frame F) with the fastening member (bolt 28). In this supported state, the intervening member (thermal insulation member 25) is disposed between the metal support bracket (first bracket 21a, second bracket 21b) and the protruding portion (first protruding portion 26, second protruding portion 27) and the fastening member (bolt 28) is spaced apart from the support bracket, so that heat conduction between the protruding portion (first protruding portion 26, second protruding portion 27) and the support bracket (first bracket 21a, second bracket 21b) is suppressed, and the effect of heat transferred from the frame body (vehicle body frame F) is suppressed, thereby enabling the temperature of the battery (battery module B) to be well managed.

[0069] (2)In the battery support structure of (1), it is preferable that the thermal conductivity of the intervening member (insulating member 25) is lower than that of the support brackets (first bracket 21a, second bracket 21b) and that the thermal conductivity of the intervening member (insulating member 25) is lower than that of the frame body (vehicle frame F).

[0070] This enables a strong connection by fastening the intervening member (thermal insulation member 25) to the protruding portions (first protruding portion 26, second protruding portion 27) with bolts 28. Also, in this configuration, the thermal conductivity of the intervening member (thermal insulation member 25) is lower than the thermal conductivity of the support brackets (first bracket 21a, second bracket 21b) and the thermal conductivity of the frame body (vehicle frame F), thereby suppressing the effects of heat transferred from the frame body (vehicle frame F).

[0071] In the battery support structure of (3)(2), it is preferable that the intervening member (insulating member 25) is integrally formed with the support brackets (first bracket 21a, second bracket 21b) by resin insert molding so as to extend in the vehicle width direction, and the fastening member (bolt 28) fastens the intervening member (insulating member 25) to the protrusions (first protrusion 26, second protrusion 27) while being inserted into the through hole 25a of the intervening member (insulating member 25) in the vertical direction of the vehicle.

[0072] According to this, the intervening member (thermal insulation member 25) and the support brackets (first bracket 21a, second bracket 21b) are firmly connected by resin insert molding. Furthermore, a fastening member (bolt 28) is inserted into the through hole 25a of the intervening member (thermal insulation member 25) to fasten the intervening member (thermal insulation member 25) to the protruding parts (first protruding part 26, second protruding part 27), thereby realizing a strong connection.

[0073] (4) In the battery support structure of any one of (1) to (3), a share panel 6 supported by a frame body (vehicle frame F) is arranged below the battery accommodating space BS, and a bottom plate supporting the battery (battery module B) is integrally formed with the support brackets (first bracket 21a, second bracket 21b) while having a flow path space 23a through which a cooling fluid flows, and it is preferable that a heat-insulating support body 33 is interposed between the upper surface of the share panel 6 and the lower surface of the bottom plate.

[0074] With this, even in a situation where the weight of the battery (battery module B) causes the bottom plate to deform downward, the battery (battery module B) is supported by the share panel 6 via the insulating supports 33, so even if the temperature of the share panel 6 fluctuates, the temperature of the battery (battery module B) will not fluctuate. Furthermore, with this configuration, it is possible to consider a configuration in which the share panel 6 is directly supported by the insulating supports 33, or a configuration in which the share panel 6 is indirectly supported by the insulating supports 33, such as by using a structure in which the upper end of a member whose lower end is supported by the insulating supports 33 abuts against the share panel 6. [Industrial Applicability]

[0075] The present invention can be used in a support structure for a battery. [Explanation of symbols]

[0076] B: battery module (battery), BS: battery storage space, C: support unit, F: vehicle frame (frame body), 6: share panel, 21: support plate (bottom plate), 21a: support bracket, 21b: second support bracket, 23a: flow path space, 25: heat insulating member (intervening member), 25a: through hole, 26: first protrusion (protrusion), 27: second protrusion (protrusion), 28: bolt (fastening member), 33: heat insulating support

Claims

1. A battery support structure including a support unit that supports a battery disposed in a battery storage space located inside a metal frame body on the frame body, The frame body is formed with a protrusion that protrudes into the battery accommodating space, the support unit includes a metal support bracket that supports the battery, an interposition member fixed to the support bracket, and a fastening member that fastens the interposition member to the protrusion and is spaced apart from the support bracket, A battery support structure in which the thermal conductivity of the intervening member is lower than the thermal conductivity of the fastening member.

2. 2. The battery support structure according to claim 1, wherein the interposition member has a lower thermal conductivity than the support bracket, and the interposition member has a lower thermal conductivity than the frame body.

3. the interposition member is integrally formed with the support bracket by resin insert molding so as to extend in the vehicle width direction, The battery support structure according to claim 2 , wherein the fastening member fastens the interposition member to the protrusion in a state where the fastening member is inserted through the through hole of the interposition member in the vehicle up-down direction.

4. A share panel supported by the frame body is disposed below the battery accommodating space, a bottom plate supporting the battery is integrally formed with the support bracket in a state in which a flow passage space through which a cooling fluid flows; The battery support structure according to any one of claims 1 to 3, wherein a heat insulating support is interposed between the upper surface of the share panel and the lower surface of the bottom plate.

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