Frame member type battery device, structure, mobile body, manufacturing method of structure, and battery-oriented structural design method

Abstract

To provide battery-oriented structure design (BOSD: Battery Oriented Structual Design) technology.SOLUTION: A method of manufacturing a structure body comprises: a structure design step ST1 of designing an optimum structure of a structure body which itself has a battery; a skeleton member manufacture step ST2 of manufacturing a skeleton member constituting the structure body of the optimum structure designed in the structure design step ST1; and a skeleton member coupling step ST3 of coupling skeleton members, manufactured in the skeleton member manufacture step ST2, to each other. In the structure design step ST1, computation by a computer is carried out so that the structure body meets structurally satisfied conditions and the total electric capacity of the battery of the structure body is maximized.SELECTED DRAWING: Figure 18

Description

[Technical Field]

[0001] The present invention belongs to the technical field of batteries. [Background technology]

[0002] Structures that form a space for mounting a battery are known (see Patent Documents 1, 2, 3, etc.). These types of structures are manufactured by joining and integrating multiple frame members together. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-202946 [Patent Document 2] Patent Publication No. 2021-138313 [Patent Document 3] Japanese Patent Application Laid-Open No. 2012-131486 Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention provides a battery device that can form a structure. [Means for solving the problem]

[0005] In one embodiment, the frame member type battery device is combined with other frame members to form a structure. [Effects of the Invention]

[0006] According to one embodiment of the frame member type battery device, a structure can be formed by combining it with other frame members. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a plan view conceptually illustrating a structure of an embodiment. [Figure 2] FIG. 1 is a side view conceptually illustrating a structure of an embodiment. [Figure 3] FIG. 1 is an exploded plan view conceptually illustrating a structure of an embodiment. [Figure 4] 1 is a diagram conceptually illustrating an electrode terminal portion of a frame member type battery device according to an embodiment. [Figure 5] 4 is a cross-sectional view taken along the line AA in FIG. 3. [Figure 6] FIG. 1 is a front view conceptually illustrating a structure of an embodiment. [Figure 7] FIG. 1 is a plan view conceptually illustrating a structure of an embodiment. [Figure 8] FIG. 1 is an exploded plan view conceptually illustrating a structure of an embodiment. [Figure 9] FIG. 1 is a plan view conceptually illustrating a structure of an embodiment. [Figure 10] 10 is a cross-sectional view of FIG. 9 taken along line B-B. [Figure 11] 1 is a perspective view conceptually illustrating a frame member type battery device according to one embodiment. [Figure 12] 12 is a cross-sectional view taken along CC in FIG. 11. [Figure 13] 1A and 1B are perspective views conceptually showing a frame member type battery device according to an embodiment, respectively; [Figure 14] FIG. 2 is a perspective view conceptually illustrating a structural portion of a structure according to an embodiment. [Figure 15] 1 is a perspective view conceptually illustrating a frame member type battery device according to one embodiment. [Figure 16] FIG. 2 is a perspective view conceptually illustrating a structural portion of a structural body according to an embodiment. [Figure 17] FIG. 1 is a perspective view conceptually illustrating a structure of an embodiment. [Figure 18] 1 is a flowchart of a method for manufacturing a structure according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the first and second embodiments, an embodiment of a vehicle is shown as an embodiment of a moving body of the present invention. Arrows X, Y, and Z in the drawings indicate the front-rear direction, the left-right direction, and the up-down direction, respectively.

[0009] [First embodiment] [vehicle] 1 and 2 is an EV (Electric Vehicle) that runs using the driving force of a motor (not shown). The vehicle 1 has a structure 3 that forms part of the lower structure of a vehicle body 2. The motor of the vehicle 1 is driven by power supplied from a battery unit (hereinafter referred to as "battery") 11 of the structure 3.

[0010] [Structure] 1, 2, and 3, the structural body 3 includes a pair of left and right floor side members 5LS, 5RS, a pair of front and rear floor cross members 6FC, 6RC, a pair of left and right front side members 7LS, 7RS, a front cross member 8, a pair of left and right rear side members 9LS, 9RS, and a rear cross member 10. A floor pan (not shown) that forms the floor of the passenger compartment 4 is provided on top of the structural body 3.

[0011] 1, a pair of left and right floor side members 5LS, 5RS and a pair of front and rear floor cross members 6FC, 6RC form a structural portion 3a having a rectangular shape in a plan view. The structural portion 3a forms a space S1 having a rectangular shape in a plan view that is surrounded by the pair of left and right floor side members 5LS, 5RS and the pair of front and rear floor cross members 6FC, 6RC.

[0012] One floor side member 5LS is a frame member that is disposed on the left side of the lower center of the vehicle 1 in the longitudinal direction and extends in the longitudinal direction of the vehicle 1.

[0013] The other floor side member 5RS is a frame member that is disposed on the right side of the lower center of the vehicle 1 in the longitudinal direction and extends in the longitudinal direction of the vehicle 1.

[0014] One floor cross member 6FC is a frame member that spans the front ends of both floor side members 5LS and 5RS. The left end of one floor cross member 6FC is fixed to the front end of one floor side member 5LS. The right end of one floor cross member 6FC is fixed to the front end of the other floor side member 5RS.

[0015] The other floor cross member 6RC is a frame member that spans the rear ends of both floor side members 5LS and 5RS. The left end of the other floor cross member 6RC is fixed to the rear end of one floor side member 5LS. The right end of the other floor cross member 6RC is fixed to the rear end of the other floor side member 5RS.

[0016] One front side member 7LS is a framework member that extends from the front end of one floor side member 5LS toward the front end side of the vehicle 1. The rear end of one front side member 7LS is fixed to the front end of one floor side member 5LS.

[0017] The other front side member 7RS is a framework member that extends from the front end of the other floor side member 5RS toward the front end of the vehicle 1. The rear end of the other front side member 7RS is fixed to the front end of the other floor side member 5RS.

[0018] The front cross member 8 is a frame member that spans between the left and right front side members 7LS and 7RS. The left end of the front cross member 8 is fixed to the vicinity of the front end of one of the front side members 7LS. The right end of the front cross member 8 is fixed to the vicinity of the front end of the other front side member 7RS.

[0019] One rear side member 9LS is a framework member that extends from the rear end of one floor side member 5LS toward the rear end of the vehicle 1. The front end of one front side member 9LS is fixed to the rear end of one floor side member 5LS.

[0020] The other rear side member 9RS is a framework member that extends from the rear end of the other floor side member 5RS toward the rear end of the vehicle 1. The front end of the other rear side member 9RS is fixed to the rear end of the other floor side member 5RS.

[0021] The rear cross member 10 is a frame member that spans between the left and right rear side members 9LS and 9RS. The left end of the rear cross member 10 is fixed to the rear end of one of the rear side members 9LS, and the right end of the rear cross member 10 is fixed to the rear end of the other rear side member 9LS.

[0022] The skeletal members constituting the structure 3 are joined together by welding, fitting, fastening, adhesive, etc. When the skeletal member bodies of the skeletal members are made of the same type of light metal (for example, aluminum alloy), methods such as spot welding, friction stir welding, riveting, bolting, etc. can be used to join the skeletal members together. When the members to be joined together are made of different types of materials (for example, steel and aluminum alloy), methods such as bolting, riveting, etc. can be used to join the skeletal members together.

[0023] Of the frame members that make up the structure 3, the floor side members 5LS and 5RS and the floor cross members 6FC and 6RC are each an embodiment of a frame member-type battery device.

[0024] [Framework-type battery device] 1 and 3, the floor side members 5LS, 5RS and the floor cross members 6FC, 6RC each have a battery 11. The battery 11 is made up of a plurality of battery stacks 12.

[0025] The battery 11 of the floor side members 5LS, 5RS is composed of a plurality of battery stacks 12 arranged in the longitudinal direction of the vehicle 1.

[0026] The battery 11 of the floor cross members 6FC, 6RC is composed of a plurality of battery stacks 12 arranged side by side in the left-right direction of the vehicle 1.

[0027] A plurality of battery stacks 12 constituting the battery 11 are electrically connected in series to each other.

[0028] The floor side members 5LS, 5RS and floor cross members 6FC, 6RC each have an electrode terminal portion 18, which is conceptually shown in FIG. 4. The electrode terminal portion 18 has a positive terminal 19 and a negative terminal 20. The positive terminal 19 is electrically connected to the positive electrode of the battery 11. The negative terminal 20 is electrically connected to the negative electrode of the battery 11.

[0029] The electrode terminal portion 18 is connected to a control unit (not shown). The control unit performs power management of the battery 11 of the structure 3. The power management includes at least charge and discharge management.

[0030] 5, the floor side members 5LS, 5RS and the floor cross members 6FC, 6RC each have a frame member main body 13. The frame member main body 13 has a hollow portion S2. The battery 11 is provided in the hollow portion S2.

[0031] The frame member body 13 is manufactured by bending a metal plate, for example. The frame member body 13 has a bottom plate portion 14 and opposing side plate portions 15 and 16. The side plate portions 15 and 16 extend upward at right angles from both sides of the bottom plate portion 14.

[0032] The battery stack 12 constituting the battery 11 is formed by stacking a plurality of solid-state batteries (single cells) 17. In this example, the battery stack 12 is formed by stacking a plurality of solid-state batteries 17 in the distance direction (the direction of arrow D) between the opposing inner surfaces 15a, 16a of the side plate portions 15, 16. The solid-state batteries 17 are all-solid-state batteries or semi-solid-state batteries. An all-solid-state battery is a battery whose electrolyte layer is made of a solid electrolyte. A semi-solid-state battery is a battery whose electrolyte layer is made of a gelled electrolyte.

[0033] The frame member main body 13 applies a confining pressure P1 to the battery stack 12 in the stacking direction of the solid-state batteries 17. In this example, the battery stack 12 is sandwiched between both side plate portions 15, 16 of the frame member main body 13 and receives the confining pressure P1 from the inner surfaces 15a, 16a of the both side plate portions 15, 16. The battery stack 12 may be in direct contact with one of the side plate portions 15. The battery stack 12 may be in direct contact with the inner surface 16a of the other side plate portion 16. An elastic body (spring, comb, etc.) may be provided between the battery stack 12 and one of the side plate portions 15, as needed. An elastic body (spring, comb, etc.) may be provided between the battery stack 12 and the other side plate portion 16, as needed. An electrical circuit may be provided between the battery stack 12 and one of the side plate portions 15, as needed. An electrical circuit may be provided between the battery stack 12 and the other side plate portion 16, as needed.

[0034] If necessary, the frame member main body 13 is provided with a displacement prevention part (not shown) for preventing displacement of the battery stack 12. The displacement prevention part is composed of a protrusion integrally formed on the inner surface of the frame member main body 13, a member attached to the inner surface of the frame member main body 13, etc.

[0035] Hereinafter, components that are the same as or common to components already described will be given the same reference numerals, and their description will be omitted as appropriate.

[0036] [Vehicle door] 6 is a front door of the vehicle 1. The door 21 includes an electric window 22 and a structure 23 that forms part of the structure of the door 21. The electric window 22 can be driven by power supplied from the battery 11 of the structure 3 and the battery 11 of the structure 23.

[0037] The structure 23 is formed by joining and integrating four skeletal member type battery devices 24 to 27. The cross-sectional structure of each of the skeletal member type battery devices 24 to 27 is the same as the cross-sectional structure shown in FIG. 5. Each of the skeletal member type battery devices 24 to 27 has a skeletal member main body 13. The battery 11 is provided in the hollow portion S2 of the skeletal member main body 13.

[0038] The battery 11 of the frame member type battery devices 24, 26 is composed of a plurality of battery stacks 12 arranged in a vertical direction.

[0039] The battery 11 of the frame member type battery devices 25, 27 is composed of a plurality of battery stacks 12 arranged in the front-rear direction of the vehicle 1.

[0040] A plurality of battery stacks 12 constituting the battery 11 are electrically connected in series to each other.

[0041] The skeletal member type battery devices 24-27 each have an electrode terminal 18, which is conceptually shown in Figure 4. The electrode terminal 18 of the skeletal member type battery devices 24-27 is connected to a control unit. The control unit performs power management of the battery 11 of the structure 23. Here, too, the power management includes at least charge and discharge management.

[0042] The control unit normally supplies power from the battery 11 of the structure 3 to the electric windows 22. On the other hand, in an abnormal state, the control unit supplies power from the battery 11 of the structure 23 to at least the electric windows 22. Here, the abnormal state refers to a state in which the power of the battery 11 of the structure 3 cannot be used.

[0043] [Action and effect] The above configuration provides the following effects. (1) A frame-type battery device, that is, a structure 3 incorporating a battery 11 can be manufactured by using frame members (floor side members 5LS, 5RS and floor cross members 6FC, 6RC) incorporating the battery 11 as frame members. By incorporating the battery 11 in the structure 3 itself, the structural design of the structure 3 of the vehicle body 2 can be carried out taking into account the rigidity of the battery 11, etc. This may make it possible to suppress an increase in the weight of the lower structure of the vehicle body 2 while incorporating the battery 11, for example, by reducing the thickness of the metal plate used in the structure 3. The structural design includes a design that meets specified conditions in terms of both safety and economy.

[0044] (2) By incorporating the battery 11 into the structure 3 itself, a space S1 is created under the vehicle body 2. The space S1 can be used to mount a further battery or for other purposes.

[0045] (3) By configuring the battery 11 as a solid-state battery 17, the risk of the battery 11 catching fire is reduced, and a highly safe structure 3 can be realized.

[0046] (4) The frame member main body 13 functions as a restraining body that applies a restraining pressure P1 to the battery stack 12 in the stacking direction of the solid-state batteries 17. By giving the frame member main body 13 the function of a restraining body, the restraining body can be omitted. This makes it possible to suppress an increase in the weight of the lower structure of the vehicle body 2 while incorporating the battery 33 in the structure 32.

[0047] (5) Since the structure 23 of the door 21 itself houses the battery 11, the structure of the structure 23 of the door 21 can be designed taking into account the rigidity of the battery 11, etc. This makes it possible to realize a door 21 having a battery 11 while suppressing an increase in the weight of the door 21. (6) Even if the vehicle 1 is unable to use the power of the battery 11 in the structure 3 of the body 2, the vehicle 1 can still drive at least the electric windows 22 using the power of the battery 11 in the structure 23 of the door 21, making it highly safe.

[0048] [Second embodiment] [vehicle] 7 is an EV that runs using the driving force of a motor (not shown). The vehicle 30 has a structure 32 that forms part of the lower structure of a vehicle body 31. The motor of the vehicle 30 is driven by power supplied from a battery stack 34 mounted on the structure 32 and a battery 33 of the structure 32.

[0049] [Structure] 7, 8, and 9, the structural body 32 includes a pair of left and right floor side members 35LS, 35RS, a pair of front and rear floor cross members 36FC, 36RC, a pair of left and right front side members 37LS, 37RS, a front cross member 38, a pair of left and right rear side members 39LS, 39RS, a rear cross member 40, and a center member 41. A floor pan (not shown) that forms the floor of the passenger compartment 4 is provided on the upper part of the structural body 32.

[0050] 7, a pair of left and right floor side members 35LS, 35RS and a pair of front and rear floor cross members 36FC, 36RC form a structural portion 32a that is rectangular in plan view. The structural portion 32a defines a space S3 that is rectangular in plan view and is surrounded by the pair of left and right floor side members 35LS, 35RS and the pair of front and rear floor cross members 36FC, 36RC.

[0051] One floor side member 35LS is a framework member that is disposed on the left side of the lower center of the vehicle 30 in the longitudinal direction and extends in the longitudinal direction of the vehicle 30.

[0052] The other floor side member 35RS is a frame member that is disposed on the right side of the lower center of the vehicle 1 in the longitudinal direction and extends in the longitudinal direction of the vehicle 30.

[0053] One floor cross member 36FC is a framework member that spans the front ends of both floor side members 35LS and 35RS. The left end of one floor cross member 36FC is fixed to the front end of one floor side member 35LS. The right end of one floor cross member 36FC is fixed to the front end of the other floor side member 35RS.

[0054] The other floor cross member 36RC is a frame member that spans the rear ends of both floor side members 35LS and 35RS. The left end of the other floor cross member 36RC is fixed to the rear end of one floor side member 35LS. The right end of the other floor cross member 36RC is fixed to the rear end of the other floor side member 35RS.

[0055] One front side member 37LS is a framework member that extends from the front end of one floor side member 35LS toward the front end side of the vehicle 30. The rear end of one front side member 37LS is fixed to the front end of one floor side member 35LS.

[0056] The other front side member 37RS is a framework member that extends from the front end of the other floor side member 35RS toward the front end of the vehicle 1. The rear end of the other front side member 37RS is fixed to the front end of the other floor side member 35RS.

[0057] The front cross member 38 is a framework member that spans between the left and right front side members 37LS and 37RS. The left end of the front cross member 38 is fixed to the vicinity of the front end of one of the front side members 37LS. The right end of the front cross member 38 is fixed to the vicinity of the front end of the other front side member 37RS.

[0058] One rear side member 39LS is a framework member that extends from the rear end of one floor side member 35LS toward the rear end side of the vehicle 30. The front end of one rear side member 39LS is fixed to the rear end of one floor side member 35LS.

[0059] The other rear side member 39RS is a framework member that extends from the rear end of the other floor side member 35RS toward the rear end of the vehicle 30. The front end of the other rear side member 39RS is fixed to the rear end of the other floor side member 35RS.

[0060] The rear cross member 40 is a frame member that spans between the left and right rear side members 39LS, 39RS. The left end of the rear cross member 40 is fixed to the rear end of one of the rear side members 39LS, and the right end of the rear cross member 40 is fixed to the rear end of the other rear side member 39LS.

[0061] The center member 41 is a framework member that spans between the pair of front and rear floor cross members 36FC, 36RC. The front end of the center member 41 is fixed to the center in the left-right direction of one floor cross member 36FC. The rear end of the center member 41 is fixed to the center in the left-right direction of the other floor cross member 36RC. The center member 41 divides the space S3 of the structural portion 32a into left and right spaces S3L, S3R.

[0062] The connections between the skeletal members that make up the structure 32 are achieved by welding, fitting, fastening, adhesive, or the like. Of the frame members that make up the structure 32, the floor side members 35LS and 35RS and the floor cross members 36FC and 36RC are each an embodiment of a frame member-type battery device.

[0063] As shown in FIGS. 9 and 10, a mesh-like bottom plate 42 is provided at the bottom of the structural portion 32a.

[0064] As shown in Fig. 7, a plurality of battery stacks 34 are housed in the space S3 of the structural portion 32a. The battery stacks 34 are lined up in the longitudinal direction of the vehicle 1, with the same number housed in each of the left space S3L and the right space S3R. The plurality of battery stacks 34 housed in the left space S3L are electrically connected in series to form a first battery stack row. The plurality of battery stacks 34 housed in the right space S3R are electrically connected in series to form a second battery stack row. The first battery stack row and the second battery stack row are electrically connected in parallel to each other. Electrode terminals (not shown) of the first battery stack row and the second battery stack row are connected to a control unit (not shown).

[0065] As shown in FIG. 10, the battery stack 34 is made up of a plurality of unit cells 43 stacked in opposing directions (left-right direction) on the left and right floor side members 35LS, 35RS.

[0066] The battery stack 34 housed in the left space S3L is sandwiched between the left floor side member 35LS and the center member 41, and receives a restraining pressure P2 from the left floor side member 35LS and the center member 41.

[0067] The battery stack 34 housed in the right space S3R is sandwiched between the right floor side member 35RS and the center member 41, and receives a restraining pressure P2 from the right floor side member 35RS and the center member 41.

[0068] The battery stack 34 and the left floor side member 35LS may be in direct contact. The battery stack 34 and the right floor side member 35RS may be in direct contact. The battery stack 34 and the center member 41 may be in direct contact. An elastic body (spring, comb, etc.) may be provided between the battery stack 34 and the left floor side member 35LS, if necessary. An elastic body (spring, comb, etc.) may be provided between the battery stack 34 and the center member 41, if necessary. An electrical circuit may be provided between the battery stack 34 and the left floor side member 35LS, if necessary. An electrical circuit may be provided between the battery stack 34 and the right floor side member 35RS, if necessary. An electrical circuit may be provided between the battery stack 34 and the center member 41, if necessary.

[0069] [Framework-type battery device] 7, 8, and 9, the floor side members 35LS, 35RS and floor cross members 36FC, 36RC each have a battery 33. The battery 33 is configured by a plurality of battery stacks 44.

[0070] The battery 33 of the floor side members 35LS, 35RS is composed of a plurality of battery stacks 44 arranged in the longitudinal direction of the vehicle 30.

[0071] The battery 33 of the floor cross members 36FC, 36RC is composed of a plurality of battery stacks 44 arranged in the left-right direction of the vehicle 30.

[0072] The plurality of battery stacks 44 that make up the battery 33 are electrically connected in series with each other.

[0073] The floor side members 35LS, 35RS and floor cross members 36FC, 36RC each have an electrode terminal portion 18, which is conceptually shown in FIG. 4. The electrode terminal portion 18 has a positive terminal 19 and a negative terminal 20. The positive terminal 19 is electrically connected to the positive electrode of the battery 33. The negative terminal 20 is electrically connected to the negative electrode of the battery 33.

[0074] The electrode terminal portion 18 is connected to a control unit. The control unit performs power management for the first battery stack row and the second battery stack row housed in the space S3 of the structure 32, as well as power management for the batteries 33 of the structure 32. The power management includes at least charge and discharge management.

[0075] 10, the floor side members 35LS, 35RS have a frame member main body 45. The frame member main body 45 has a hollow portion S4. The battery 33 is provided in the hollow portion S4.

[0076] The frame member body 45 is manufactured by, for example, bending a metal plate. The frame member body 45 has a bottom plate portion 46 and opposing side plate portions 47, 48. The side plate portions 47, 48 extend upward at right angles from both sides of the bottom plate portion 46.

[0077] The battery stack 44 constituting the battery 33 is formed by stacking a plurality of solid-state batteries (single cells) 49. In this example, the battery stack 44 is formed by stacking a plurality of solid-state batteries 49 in the distance direction (left-right direction) between the opposing inner surfaces 47a, 48a of the side plate portions 47, 48. The solid-state batteries 49 are all-solid-state batteries or semi-solid-state batteries.

[0078] The frame member main body 45 applies a confining pressure P1 to the battery stack 44 in the stacking direction of the solid-state batteries 49. In this example, the battery stack 44 is sandwiched between both side plate portions 47, 48 of the frame member main body 45, and receives the confining pressure P1 from the inner surfaces 47a, 48a of the both side plate portions 47, 48.

[0079] The battery stack 44 and one side plate portion 47 may be in direct contact. The battery stack 44 and the other side plate portion 48 may be in direct contact. An elastic body (spring, comb, etc.) may be provided between the battery stack 44 and the inner surface 47a of the one side plate portion 47, as needed. An elastic body (spring, comb, etc.) may be provided between the battery stack 44 and the inner surface 48a of the other side plate portion 48, as needed. An electric circuit may be provided between the battery stack 44 and the inner surface 47a of the one side plate portion 47, as needed. An electric circuit may be provided between the battery stack 44 and the inner surface 48a of the other side plate portion 48, as needed.

[0080] The frame member main body 45 is provided with a displacement prevention part (not shown) as needed to prevent displacement of the battery stack 44. The displacement prevention part is configured by a protrusion integrally formed on the inner surface of the frame member main body 45, a member attached to the inner surface of the frame member main body 45, or the like.

[0081] The configuration of the floor cross members 36FC and 36RC is substantially the same as that of the floor side members 35LS and 35RS.

[0082] [Effects of the Second Embodiment] The above configuration provides the following effects. (1) A frame-type battery device, that is, a structure 32 incorporating a battery 33, can be manufactured by using frame members (floor side members 35LS, 35RS and floor cross members 36FC, 36RC) incorporating the battery 33 as frame members. By incorporating the battery 33 in the structure 32 itself, the structural design of the structure 32 of the vehicle body 31 can be carried out taking into account the rigidity, etc., of the battery 33. This may enable the structure 32 to incorporate the battery 33 while suppressing increases in weight and dimensions by, for example, reducing the thickness of the metal plates used in the structure 32.

[0083] (2) By incorporating the battery 33 in the structure 32 itself, a space S3 is created below the vehicle body 31, and a battery stack 34 can be mounted in this space S3. The electrical capacity (the amount of electricity that can be stored) of the vehicle 30 is the sum of the total capacity of all the batteries 33 incorporated in the structure 32 and the total capacity of all the battery stacks 34 mounted in the space S3 of the structure 32. Therefore, the electrical capacity of the vehicle 30 is larger than that of conventional vehicles.

[0084] (3) By configuring the battery 33 as a solid-state battery 49, the risk of the battery 33 catching fire is reduced, and a highly safe structure 32 can be realized.

[0085] (4) The frame member main body 45 functions as a restraining body that applies a restraining pressure to the battery stack 34 of the battery 33 in the stacking direction of the solid-state batteries 49. By giving the frame member main body 45 the function of a restraining body, it is possible to omit a restraining body for restraining the battery stack 34. This makes it possible to suppress an increase in the weight of the lower structure of the vehicle body 31 while incorporating the battery 33 in the structure 32.

[0086] (5) The floor side member 35LS and center member 41 on the left side of the structural portion 32a function as restraints that apply a restraining pressure P2 to the battery stack 34 housed in the space S3L on the left side of the structural portion 32 in the stacking direction of the cells 43. The floor side member 35RS and center member 41 on the right side of the structural portion 32a function as restraints that apply a restraining pressure P2 to the battery stack 34 housed in the space S3R on the right side of the structural portion 32 in the stacking direction of the cells 43. By providing the structural portion 32a with the function of a restraint, it is possible to omit a restraint for restraining the battery stack 34. This makes it possible to suppress an increase in the weight of the vehicle body 31 by the amount of the restraint.

[0087] [Third embodiment] [Configuration of frame-type battery device] The skeletal member type battery device 51 shown in Figure 11 is used as a skeletal member of a structure. The battery 53 of the skeletal member type battery device 51 is composed of multiple battery stacks 58 arranged in the longitudinal direction of the skeletal member type battery device 51. The skeletal member type battery device 51 can be combined with other skeletal members to form a structure.

[0088] 12, a frame-type battery device 51 has a frame body 52. ​​The frame body 52 has a hollow portion S5. A battery 53 is provided in the hollow portion S5.

[0089] The frame member body 52 is manufactured by bending and welding a metal plate, for example, and has a top plate portion 54, a bottom plate portion 55, and side plate portions 56 and 57 facing each other.

[0090] The battery stack 58 constituting the battery 53 is formed by stacking a plurality of solid-state batteries (single cells) 59. In this example, the battery stack 58 is formed by a plurality of solid-state batteries 59 stacked in the distance direction (the direction of arrow D) between the opposing inner surfaces 56a, 57a of the side plate portions 56, 57.

[0091] The frame member main body 52 applies a confining pressure P1 to the battery stack 58 in the stacking direction of the solid-state batteries 59. In this example, the battery stack 58 is sandwiched between both side plate portions 56, 57 of the frame member main body 52, and receives the confining pressure P1 from the inner surfaces 56 a, 57 a of the both side plate portions 56, 57.

[0092] The skeletal member type battery device 51 has an electrode terminal portion 18. A positive terminal 19 of the electrode terminal portion 18 is electrically connected to the positive electrode of the battery 53. A negative terminal 20 of the electrode terminal portion 18 is electrically connected to the negative electrode of the battery 53.

[0093] [Effects of the third embodiment] (1) By using the skeletal member-type battery device 51 as a skeletal member, a structure having a battery 53 can be manufactured. By incorporating the battery 53 into the structure itself, the structure can be designed taking into account the rigidity, etc., of the battery 53. This makes it possible to suppress increases in the weight and dimensions of the structure while incorporating the battery 53, for example by reducing the thickness of the metal plate used in the structure.

[0094] (2) By configuring the battery 53 as a solid-state battery 59, the risk of the battery 53 catching fire is reduced, and a highly safe frame member type battery device 51 and structure can be realized.

[0095] (3) The frame member main body 52 functions as a restraining body that applies a restraining pressure P1 to the battery stack 58 of the battery 53 in the stacking direction of the solid-state batteries 59. By giving the frame member main body 52 the function of a restraining body, it is possible to omit a restraining body for restraining the battery stack 58. This makes it possible to suppress an increase in the weight of the frame member-type battery device 51 and the structure.

[0096] (4) The frame member type battery device 51 has the electrode terminal portion 18, so that the charging and discharging of the battery 53 can be controlled by connecting the electrode terminal portion 18 to a control unit.

[0097] [Fourth embodiment] [Framework-type battery device] The skeletal member type battery device 60A shown in Fig. 13(A) is used as a skeletal member of a structure. The batteries 53 of the skeletal member type battery device 60A are composed of multiple battery stacks 58 arranged in the longitudinal direction of the skeletal member type battery device 60A. The cross-sectional structure of the skeletal member type battery device 60A is similar to that of the skeletal member type battery device 51 of the third embodiment shown in Fig. 12. The skeletal member type battery device 60A can be combined with other skeletal members to form a structure.

[0098] The skeletal member type battery device 60B shown in Fig. 13(B) is used as a skeletal member of a structure. The batteries 53 of the skeletal member type battery device 60B are composed of multiple battery stacks 58 arranged in the longitudinal direction of the skeletal member type battery device 60B. The cross-sectional structure of the skeletal member type battery device 60B is similar to that of the skeletal member type battery device 51 of the third embodiment shown in Fig. 12. The skeletal member type battery device 60B can be combined with other skeletal members to form a structure.

[0099] The skeletal member type battery device 60A shown in Fig. 13(A) has electrode terminals 18 in two locations. The electrode terminals 18 are provided near one end and the other end of the same side surface 60a of the skeletal member type battery device 60A. The skeletal member type battery device 60B shown in Fig. 13(B) has an electrode terminal 18 on one end surface 60b.

[0100] As shown in Fig. 14, the skeletal member type battery device 60A and the skeletal member type battery device 60B are coupled to each other. At this time, the positive terminal 19 of one electrode terminal 18 (18A) of the skeletal member type battery device 60A is connected to the negative terminal 20 of the skeletal member type battery device 60B, and the negative terminal 20 of one electrode terminal 18 (18A) of the skeletal member type battery device 60A is connected to the positive terminal 19 of the skeletal member type battery device 60B. As a result, the battery 53 of the skeletal member type battery device 60A and the battery 53 of the skeletal member type battery device 60B are connected in series.

[0101] [Effects of the fourth embodiment] By joining a linear skeletal member-type battery device 60A and a linear skeletal member-type battery device 60B at right angles to each other, a curved structural portion can be constructed having two series-connected batteries 53. Other advantages are the same as those of the third embodiment.

[0102] [Fifth embodiment] [Framework-type battery device] The skeletal member type battery device 61 shown in FIG. 15 is used as a skeletal member of a structure. The skeletal member type battery device 61 can be combined with other skeletal members to form a structure. The cross-sectional structure of the skeletal member type battery device 61 is similar to the cross-sectional structure of the skeletal member type battery device 51 of the third embodiment shown in FIG. 12. The batteries 53 of the skeletal member type battery device 61 are composed of multiple battery stacks 58 arranged in the longitudinal direction of the skeletal member type battery device 61.

[0103] The frame member type battery device 61 has electrode terminals 18 on both end faces 61a, 61b in the longitudinal direction.

[0104] In the example of FIG. 16, two skeletal member type battery devices 61 (61A, 61B) are connected to each other. At this time, the positive terminal 19 of one skeletal member type battery device 61 (61A) is connected to the negative terminal 20 of the other skeletal member type battery device 61 (61B), and the negative terminal 20 of one skeletal member type battery device 61 (61A) is connected to the positive terminal 19 of the other skeletal member type battery device 61 (61B). As a result, the battery 53 of one skeletal member type battery device 61 (61A) and the battery 53 of the other skeletal member type battery device 61 (61B) are connected in series.

[0105] [Effects of the Fifth Embodiment] By connecting two skeletal member type battery devices 61 (61A, 61B) to each other, a linear structural portion having two batteries 53 connected in series can be constructed. The number of connected skeletal member type battery devices 61 is arbitrary. By increasing the number of connections, a linear structural portion having a greater number of batteries 53 connected in series can be constructed. Other effects are the same as those of the third embodiment.

[0106] [Sixth embodiment] [Building unit structure]

[0107] 17 is a structural body (framework) of a rigid frame unit (building unit) of a building with a steel rigid frame unit structure. A steel rigid frame unit structure is an assembly of steel rigid frame units, each of which has sufficient strength on its own.

[0108] The structural body 64 has four pillars 65 erected vertically at the four corners, an upper beam 68 consisting of an upper long side beam 66 and an upper short side beam 67 connecting the upper ends of the pillars 65, and a lower beam 71 consisting of a lower long side beam 69 and a lower short side beam 70 connecting the lower ends of the pillars 65. By attaching ceiling materials, floor materials, interior walls, exterior walls, etc. to this structural body 65, a building unit that forms a rectangular box-shaped room (internal space) is manufactured.

[0109] At least one of the multiple skeletal members constituting the structure 64, i.e., the columns 65, the upper long-side beams 66, the upper short-side beams 67, the lower long-side beams 69, and the lower short-side beams 70, is a skeletal member-type battery device according to the present invention. That is, at least one of the skeletal members constituting the structure 65 has a built-in battery (not shown). The electrodes of the battery are connected to a building control unit (not shown). The building control unit manages the charging and discharging of the batteries in the skeletal members. The building control unit can supply power to electric devices in the building as well as to EVs and the like.

[0110] [Operation and effect of the sixth embodiment]

[0111] (1) A structure 64 using a skeletal member-type battery device as a skeletal member has a battery. The structure 64 can be designed taking into account the rigidity of the battery, etc. This makes it possible to suppress an increase in the weight of the structure 64 while incorporating a battery by reducing the thickness of the metal plate used in the structure 64, for example.

[0112] (2) By combining multiple structures 64, it is possible to construct a building in which each structure 64 itself has a battery. This makes it possible to store electricity in the building itself. The electricity stored in the building itself can be used to supply electricity to various electrical devices within the building, to charge EVs, etc.

[0113] (3) By making it possible to store electricity in the building itself, it may be possible to eliminate the need for stationary energy storage devices. Stationary energy storage devices are installed on the floors, walls, or ground of a building. In addition, by using the building's batteries in conjunction with stationary energy storage devices, a large electrical capacity can be secured.

[0114] [Seventh embodiment] [Method of manufacturing the structure] As shown in FIG. 18, the method for manufacturing a structure of one embodiment includes a structural design step ST1, a frame member manufacturing step ST2, and a frame member joining step ST3.

[0115] The structural design step ST1 is a step in which a battery-oriented structural design (BOSD) method is implemented. BOSD is a design concept for designing the optimal structure of a structure in which the structure itself has a battery. More specifically, the structural design step ST1 is a step in which the optimal structure of the structure is designed to satisfy the structural conditions (conditions required as a structure) that the structure must satisfy and to maximize the total electrical capacity of the batteries in the structure, assuming that at least one of the multiple skeletal members that make up the structure has a battery.

[0116] An example of a method for designing an optimal structure of a structure is to create a design model (physical model) of the structure based on the structural conditions that the structure must satisfy (hereinafter referred to as "structural conditions") and data (hereinafter referred to as "structure-battery inter-phase data") that represents the relationship between the structure's structure and the total capacity of the battery (the structure's electrical capacity), and then analyze and optimize the design model to determine the optimal structure. The structure-battery inter-phase data can be created by prior actual measurements or computer calculations (computer simulations) based on the volume, weight, type of battery, energy density, power density, etc., of batteries that can be implemented in various configurations of the structure. Energy density is the electrical capacity per unit volume. Power density is the maximum amount of power per unit weight per unit time. The steps from creating the design model to optimizing it can be performed using a computer. That is, an application program for implementing the structure design method can be installed on a computer, the application program is launched, structural conditions are set, and then the structural design process is executed using the application program, thereby performing the steps from creating the design model to optimizing it.

[0117] Structural conditions include the dimensions, weight, and strength of the structure, as well as the dimensions, weight, strength, rigidity, and placement (position within the structure, relative position to other structural elements, etc.) of each structural element that makes up the structure (skeletal members, wall materials, etc.), and the connection positions (node ​​positions) between structural elements.

[0118] If the structure is a manned moving body (a manned vehicle, a manned aircraft, a manned ship, etc.), the structural conditions may include matters related to vibration, such as the allowable noise level in the crew compartment and the allowable vibration level in the seats.

[0119] When a design is made for an article having a structure or for the structure itself, and then a structural design is made, the structural conditions may include the overall shape and dimensions of the article, the shapes and dimensions of each part, etc., to specify the designed design.

[0120] Structural conditions may include the electrical capacity of the structure to be realized, i.e., the total capacity of the batteries in the structure. The structural conditions may also include the number and arrangement of the frame-type battery devices that make up the structure. The structural conditions may also include various structural mechanical quantities, including the batteries of the frame-type battery device. The structural mechanical quantities include cross-sectional area, centroid, moment of inertia, section modulus, and radius of inertia. The structural conditions may also include the dimensions, weight, strength, mechanical properties, number of stacked cells, and arrangement (position and stacking direction in the frame-type battery device) of the battery stack that makes up the battery. The mechanical properties of the battery stack may include the rigidity and elasticity of the battery stack, assuming that multiple unit cells are integrated. The conditions may also include the dimensions, weight, strength, mechanical properties, and arrangement (position and stacking direction in the frame-type battery device) of the battery. The mechanical properties of the battery may include the rigidity, elasticity, and shape of the battery, assuming that multiple battery stacks are integrated by constraints (constraints by frame members). The conditions may also include the type of cells (all-solid-state battery or semi-solid-state battery) that make up the battery stack. The conditions may also include the energy density, power density, etc. of the cells that make up the battery stack. The conditions may also include the material of the skeletal member body of the skeletal member type battery device, the battery occupancy rate of the skeletal member type battery device, etc. The battery occupancy rate of the skeletal member type battery device is the ratio of the battery volume to the volume of the skeletal member type battery device, or the ratio of the battery volume to the volume of the space inside the skeletal member body. The structural conditions may also include the battery occupancy rate of the structure. The battery occupancy rate of the structure is the ratio of the battery volume to the volume of the structure, or the ratio of the battery volume to the volume of the space inside the structure.

[0121] In the structural design step ST1, a design model of the optimum structure is obtained.

[0122] The frame member manufacturing step ST2 is a step of manufacturing frame members that constitute the structure of the optimal structure obtained in the structural design step ST1. The frame members manufactured here include a plurality of frame members. The frame members include a frame member-type battery device.

[0123] The frame member joining step ST3 is a step of joining together the frame members manufactured in the frame member manufacturing step ST2.

[0124] A structure is manufactured through the above steps ST1 to ST3.

[0125] [Effects of the Seventh Embodiment] The above method allows for the design of an optimal structure for a structure that itself contains a battery, i.e., a structure that satisfies structural conditions and maximizes total electrical capacity. Based on the optimal structure, multiple frame members can be manufactured and joined together to produce a structure with an optimal structure. This can, for example, promote the integrated development of the body and battery of an EV.

[0126] [others] The present invention is not limited to the above-described embodiments. For example, although the vehicle is an EV in the above-described embodiments, the vehicle may be an HV (Hybrid Vehicle) or a PHV (Plug-in Hybrid Vehicle).

[0127] In addition, in the above embodiment, a skeletal member type battery device having a rectangular cross section is exemplified, but the cross section of the skeletal member type battery device is not limited to a rectangular shape, and may be a circular shape or a polygonal shape other than a rectangular shape. Furthermore, the shape of the skeletal member type battery device may be a plate shape.

[0128] Furthermore, in the above embodiment, the battery of the skeletal member type battery device is configured as a solid-state battery, but it is also possible to configure the battery of the skeletal member type battery device as a battery other than a solid-state battery, i.e., a secondary battery using a liquid electrolyte, provided that safety can be ensured.

[0129] Furthermore, in the first and second embodiments, a skeletal member type battery device having a skeletal member main body with an open cross-sectional structure (Figures 5 and 10) was shown, but the skeletal member type battery device of the first and second embodiments may also have a skeletal member main body with a closed cross-sectional structure as shown in Figure 12.

[0130] Furthermore, even in a skeletal member body with a closed cross-sectional structure, it is desirable to provide an opening in part of the skeletal member body, taking into consideration the convenience of maintenance of the skeletal member-type battery device, recovery and refilling of the batteries built into the skeletal member-type battery device, etc. The skeletal member body may be configured to be separable, provided that sufficient strength is ensured.

[0131] Furthermore, in the first and second embodiments, a structure that constitutes part of the lower structure of a vehicle body is shown, but the structure of the present invention may also be a structure that constitutes part of the upper structure of a vehicle body.

[0132] In the fourth and fifth embodiments, when two skeletal member type battery devices are coupled together, the batteries of both skeletal member type battery devices are electrically connected in series, but this is not limiting. In other words, when two skeletal member type battery devices are coupled together, the batteries of both skeletal member type battery devices may be electrically connected in parallel.

[0133] Furthermore, the mobile body of the present invention is not limited to a vehicle, but may be an air vehicle, a ship, etc. Air vehicles include electric aircraft, hybrid aircraft, electric airships, drones, etc. Ships include electric ships, electric submarines, etc. Electric ships include drone ships. Electric submarines include hybrid ships, drone ships, etc.

[0134] In the sixth embodiment, a completely rectangular rigid frame unit is shown as a rigid frame unit (building unit) for a building having a steel rigid frame unit structure, but the present invention is not limited to this. The structure of the present invention can also be applied to irregular rigid frame units having a sloped portion or the like.

[0135] The structure of the present invention may be a structure other than a mobile body or a building, and may also be applied to furniture structures, electrical appliance structures, and the like.

[0136] The frame member-type battery device of the present invention may also be a frame member-type battery device used as a frame member other than a mobile object or a building. The frame member-type battery device of the present invention can also be used as a frame member for furniture, a frame member for electrical appliances, etc.

[0137] Furniture includes chairs, tables, shelves, and the like that have a metal frame structure. For example, by applying the frame member-type battery device of the present invention to the frame member of the structure of a chair with an electric mechanism, the structural design of the chair structure can be carried out taking into account the rigidity of the battery, etc. Examples of chairs with an electric mechanism include reclining seats and massage chairs.

[0138] Electrical appliances include refrigerators. By applying the frame member-type battery device of the present invention to the frame member of the refrigerator structure, the structural design of the refrigerator structure can be performed taking into account the rigidity of the battery, etc. Furthermore, since the refrigerator structure has a battery, the refrigerator can maintain its cooling function even during a power outage using power stored in the refrigerator itself, without having to provide a separate battery unit.

[0139] This specification discloses at least the following: [Framework-type battery device] The frame-type battery device of one embodiment is a frame member that is combined with other frame members to form a structure. A skeleton-type battery device of one embodiment includes a skeleton body having a hollow cross-sectional structure, and a battery provided in at least a part of the hollow portion of the skeleton body.

[0140] The battery of the frame member type battery device of one embodiment is configured to include a plurality of unit cells stacked in the distance direction between the opposing inner surfaces of the frame member body. In one embodiment of the skeletal member type battery device, the battery is sandwiched and restrained between the opposing inner surfaces of the skeletal member body.

[0141] The cells constituting the battery of the frame member type battery device of one embodiment are solid state batteries.

[0142] In one embodiment, the frame member type battery device has a positive electrode terminal electrically connected to the positive electrode of the battery, and a negative electrode terminal electrically connected to the negative electrode of the battery.

[0143] In one embodiment, when two skeletal member type battery devices are connected to each other, the positive terminal of one skeletal member type battery device is electrically connected to the negative terminal of the other skeletal member type battery device, and the negative terminal of one skeletal member type battery device is electrically connected to the positive terminal of the other skeletal member type battery device.

[0144] In one embodiment, the structure is a structure of a moving body.

[0145] [Structure] In one embodiment, the structure includes a frame-type battery device.

[0146] In one embodiment, the structure forms a space for accommodating a plurality of battery stacks. The battery stack is formed by stacking unit cells.

[0147] [Moving object] The moving body of the embodiment has the structure of the embodiment.

[0148] [Method of manufacturing the structure] A method for manufacturing a structure according to one embodiment is a method for manufacturing a structure by joining together a plurality of skeletal members, at least one of which is the skeletal member-type battery device according to one embodiment.

[0149] A method for manufacturing a structure of an embodiment is a method for manufacturing a structure of an embodiment. In one embodiment, a method for manufacturing a structure includes a structural design step of designing an optimal structure of the structure so as to satisfy structural conditions that the structure must satisfy and to maximize the total electrical capacity of the battery of the structure; a frame member manufacturing step for manufacturing frame members constituting the structure of the optimum structure designed in the structural design step; and a skeleton member joining step of joining together the skeleton members manufactured in the skeleton member manufacturing step.

[0150] [Battery-oriented structural design method] A battery-oriented structural design method of one embodiment is a method for designing the structure of a structure having the frame member type battery device of one embodiment as a frame member. A battery-oriented structural design method of one embodiment designs an optimal structure of a structure so as to satisfy the structural conditions that the structure must satisfy and to maximize the total electrical capacity of the batteries of the structure.

[0151] The battery-oriented structural design method of one embodiment is a method for designing the structure of a structure that itself has a battery. A battery-oriented structural design method of one embodiment designs an optimal structure of a structure so as to satisfy the structural conditions that the structure must satisfy and to maximize the total electrical capacity of the batteries of the structure. [Explanation of symbols]

[0152] 1 vehicle 2. Body 3 structure 4 Cabin 5LS floor side member (framework member, frame-type battery unit) 5RS Floor side member (framework member, frame-type battery device) 6FC Floor cross member (framework member, frame-type battery device) 6RC floor cross member (framework member, frame-type battery device) 7LS front side member (framework) 7RS front side member (framework) 8 Front cross member (framework) 9LS rear side member (framework) 9RS Rear side member (framework) 10 Rear cross member (framework member) 11 Battery (battery section) 12 Battery stack 13. Frame member body 15 Side plate part 15a Inner surface 16 Side plate part 16a Inner surface 17 Solid-state battery (single cell) 18 Electrode terminal section 19 Positive terminal 20 Negative terminal 21 Doors 23 Structure 24 Frame member (frame member type battery device) 25 Skeleton member (skeleton-type battery device) 26 Skeleton member (skeleton-type battery device) 27 Skeleton member (skeleton-type battery device) 30 vehicles 31 Body 32 Structure 33 Batteries 34 Battery Stack 35LS Floor side member (framework member, frame-type battery unit) 35RS Floor side member (framework, frame-type battery device) 36FC Floor cross member (framework, frame-type battery unit) 36RC Floor cross member (framework member, frame-type battery device) 37LS front side member (framework) 37RS front side member (framework) 38 Front cross member (framework member) 39LS rear side member (framework) 39RS rear side member (framework) 40 Rear cross member (framework member) 41 Center member (framework member) 44 Battery Stack 45 Frame member body 47 Side plate part 47a Inner surface 48 Side plate part 48a Inner surface 49 Solid-state battery (single cell) 51 Frame-type battery device 52 Frame member body 53 Batteries 56 Side plate part 56a Inner surface 57 Side plate part 57a Inner surface 58 Battery Stack 59 Frame-type battery device 60A frame-type battery device 60B Frame member type battery device 61 Frame-type battery device 64 Structure 65 Pillar (framework type battery device) 66 Upper long side beam (framework type battery device) 67 Upper short side beam (framework type battery device) 69 Lower long side beam (framework type battery device) 70 Lower short side beam (framework type battery device) P1 confining pressure S1 space S2 Hollow part S3 space S3L space S3R space S4 Hollow part S5 Hollow part ST1 Structural design step ST2: Frame member manufacturing step ST3: Frame member joining step

Claims

1. A skeleton member that is combined with other skeleton members to form a structure, a skeleton member body having a hollow cross-sectional structure; a battery provided in at least a part of the hollow portion of the framework member body, The battery comprises: The frame member body has a plurality of unit cells stacked in a distance direction between the opposing inner surfaces thereof, It is sandwiched between the inner surfaces and restrained, The skeletal member is a positive electrode terminal electrically connected to the positive electrode of the battery; a negative electrode terminal electrically connected to the negative electrode of the battery, When the two skeletal members are connected to each other, the positive electrode terminal of one of the skeletal members and the negative electrode terminal of the other of the skeletal members are electrically connected to each other, By joining the two linear skeletal members at right angles to each other, they are connected in series. A structural part having a bent structure having two of the batteries attached thereto can be constructed, By connecting the two linear structured skeletal members to each other, the skeletal members are connected in series to each other. A skeleton member type configured to be able to construct a linear structural part having two of the batteries. battery device.

2. 2. The frame-type battery device of claim 1, wherein the unit cells are solid-state batteries.

3. A framework member that is connected to other framework members to form the structure of a building unit, a skeleton member body having a hollow cross-sectional structure; a battery provided in at least a part of the hollow portion of the framework member body, The battery comprises: a plurality of unit cells stacked in a distance direction between opposing inner surfaces of the framework member body, the unit cells being sandwiched and restrained between the inner surfaces; The skeletal member is a positive electrode terminal electrically connected to the positive electrode of the battery; a negative electrode terminal electrically connected to the negative electrode of the battery, A skeletal member type battery device configured such that when the two skeletal members are connected to each other, the positive electrode terminal of one of the skeletal members is electrically connected to the negative electrode terminal of the other skeletal member.

4. 4. The frame member type battery device according to claim 3, wherein the structure is a rigid frame unit of a building having a steel rigid frame unit structure.

5. A skeleton member that is combined with other skeleton members to form a structure of an electrical appliance, a skeleton member body having a hollow cross-sectional structure; a battery provided in at least a part of the hollow portion of the framework member body, The battery comprises: a plurality of unit cells stacked in a distance direction between opposing inner surfaces of the framework member body, the unit cells being sandwiched and restrained between the inner surfaces; The skeletal member is a positive electrode terminal electrically connected to the positive electrode of the battery; a negative electrode terminal electrically connected to the negative electrode of the battery, A skeletal member type battery device configured such that when the two skeletal members are connected to each other, the positive electrode terminal of one of the skeletal members is electrically connected to the negative electrode terminal of the other skeletal member.

6. 6. The frame member type battery device according to claim 5, wherein the electrical appliance is a refrigerator.

7. A structure comprising the frame member type battery device of claim 1 or 2.

8. The structure according to claim 7 , wherein the structure forms a space for accommodating a plurality of battery stacks each formed by stacking unit cells.

9. An electrical appliance comprising the structure of claim 7.

10. A method for manufacturing a structure by joining a plurality of skeletal members together, comprising the steps of: The method for manufacturing a structure, wherein at least one of the plurality of skeletal members is the skeletal member type battery device according to claim 1 or 2.

11. 8. A method for manufacturing the structure of claim 7, comprising: a structural design step of designing an optimal structure of the structure so as to satisfy structural conditions that the structure must satisfy and to maximize the total electrical capacity of the batteries of the structure; a frame member manufacturing step of manufacturing frame members that constitute the structure of the optimum structure designed in the structural design step; a skeleton member joining step of joining together the skeleton members manufactured in the skeleton member manufacturing step.

12. A method for designing a structure of a structure having the frame member type battery device according to any one of claims 1 to 6 as a frame member, the method comprising: A battery-oriented structural design method for designing an optimal structure of the structure so as to satisfy the structural conditions that the structure must satisfy and to maximize the total electrical capacity of the batteries of the structure.

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