Battery-oriented structural design

Abstract

To provide battery-oriented structural design (BOSD) technology.SOLUTION: A BOSD system 80 includes: an input unit 81 for inputting a parameter representing a structural condition of a pressure hull of a submarine; a structural condition setting unit 82 which sets a structural condition of the pressure hull on the basis of the input parameter; and an optimization calculation unit 83 which calculates an optimal structure of the pressure full so that the pressure full may satisfy the structural condition on the basis of the set structural condition and that a total electric capacity of a battery included as a component of the pressure hull is maximized. The BOSD system 80 uses a high-strength thin steel plate to reduce weight of a steel plate portion of the pressure hull and utilizes weight of the battery and strength thereby balancing total weight of the pressure hull and buoyancy. Accordingly, a submarine with high submarine navigation performance and levitation performance can be realized while enabling a long continuous navigation period with a battery.SELECTED DRAWING: Figure 20

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 and 2, etc.) This type of structure is produced by bonding and integrating a plurality of frame members with each other. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-202946 A [Patent Document 2] JP 2012-131486 A Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention provides a battery-oriented structural design technique. [Means for solving the problem]

[0005] In one embodiment, a battery-oriented structural design method is a method for designing a structure of a structure using a computer, comprising the steps of: The computer includes: a structural condition setting step for setting structural conditions that the structure should satisfy; The computer, and an optimization calculation step of calculating an optimal structure of the structure based on the set structural conditions so that the structure satisfies the structural conditions and so as to maximize the total electrical capacity of the batteries that the structure has as its own components. Effect of the Invention

[0006] According to one embodiment of the battery-oriented structural design method, it is possible to calculate the 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 that the structure has as its own components. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is a plan view conceptually illustrating a structure of an embodiment. [Diagram 2] FIG. 2 is a side view conceptually illustrating a structure of an embodiment. [Diagram 3] FIG. 2 is an exploded plan view conceptually showing a structure of one embodiment. [Figure 4] 1 is a conceptual diagram illustrating an electrode terminal portion of a framework type battery device according to one embodiment. [Diagram 5] 4 is a cross-sectional view taken along line AA in FIG. [Figure 6] FIG. 2 is a front view conceptually illustrating a structure of an embodiment. [Figure 7] FIG. 2 is a plan view conceptually illustrating a structure of an embodiment. [Figure 8] FIG. 2 is an exploded plan view conceptually showing a structure of one embodiment. [Figure 9] FIG. 2 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 is a perspective view conceptually showing a frame member type battery device of one embodiment, and FIG. 1B is a perspective view conceptually showing a frame member type battery device of one embodiment. [Figure 14] FIG. 2 is a perspective view conceptually showing a structural portion of a structural body of 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 showing a structural portion of a structural body of 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 one embodiment. [Figure 19] 1 is a flowchart of a battery-oriented structural design method according to one embodiment. [Figure 20] FIG. 1 is a block diagram of a battery-oriented structural design system according to one embodiment. [Figure 21] FIG. 1 is a perspective view illustrating the structure of a pressure hull of a submarine. [Figure 22] FIG. 2 is a cross-sectional view conceptually illustrating the structure of a pressure hull according to one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[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 constitutes 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 constitutes the floor of the vehicle interior 4 is provided on the upper portion 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 part 3a having a rectangular shape in a plan view. The structural part 3a forms a space S1 having a rectangular shape in a plan view 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 of the floor side members 5LS is a framework member that is disposed on the left side of the lower center in the front-rear direction of the vehicle 1 and extends in the front-rear direction of the vehicle 1.

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

[0014] One floor cross member 6FC is a framework member that is provided across 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 framework member that is provided across 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 extending 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 extending from the front end of the other floor side member 5RS toward the front end side 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 framework member that spans between the left and right front side members 7LS, 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] The rear side member 9LS is a framework member extending from the rear end of the floor side member 5LS toward the rear end side of the vehicle 1. The front end of the front side member 9LS is fixed to the rear end of the floor side member 5LS.

[0020] The other rear side member 9RS is a framework member extending from the rear end of the other floor side member 5RS toward the rear end side 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 framework member that spans between the left and right rear side members 9LS, 9RS. The left end of the rear cross member 10 is fixed to the vicinity of the rear end of one of the rear side members 9LS. The right end of the rear cross member 10 is fixed to the vicinity of 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, adhesion, etc. When the skeletal member bodies of the skeletal members are made of the same type of light metal (e.g., aluminum alloy), methods for joining the skeletal members can be, for example, spot welding, friction stir welding, riveting, bolting, etc. When the members to be joined together are made of different types of materials (e.g., steel and aluminum alloy), methods for joining the skeletal members can be, for example, bolting, riveting, etc.

[0023] Of the frame members constituting the structure 3, the floor side members 5LS, 5RS and the floor cross members 6FC, 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 composed 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 front-rear 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 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 the 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 body 13. The frame member 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, for example, by bending a metal plate. The frame member body 13 has a bottom plate portion 14 and opposing side plate portions 15, 16. The side plate portions 15, 16 extend upward at a right angle 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 the arrow D) between the opposing inner surfaces 15a, 16a of both side plate portions 15, 16. The solid-state battery 17 is an all-solid-state battery or a semi-solid-state battery. An all-solid-state battery is a battery in which the electrolyte layer is made of a solid electrolyte. A semi-solid-state battery is a battery in which the 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 and one side plate portion 15 may be in direct contact. The battery stack 12 and the inner surface 16a of the other side plate portion 16 may be in direct contact. An elastic body (spring, comb, etc.) may be provided between the battery stack 12 and one side plate portion 15 as necessary. An elastic body (spring, comb, etc.) may be provided between the battery stack 12 and the other side plate portion 16 as necessary. An electric circuit may be provided between the battery stack 12 and one side plate portion 15 as necessary. An electric circuit may be provided between the battery stack 12 and the other side plate portion 16 as necessary.

[0034] If necessary, the skeleton 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 skeleton body 13, a member attached to the inner surface of the skeleton body 13, or the like.

[0035] Hereinafter, components that are the same as or in common with components already described will be given the same reference numerals, and descriptions thereof 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 constitutes 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 combining and integrating four skeletal member type battery devices 24-27. The cross-sectional structure of each of the skeletal member type battery devices 24-27 is similar to the cross-sectional structure shown in Fig. 5. Each of the skeletal member type battery devices 24-27 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 vertically.

[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] Each of the skeletal member type battery devices 24-27 has an electrode terminal 18, which is conceptually shown in Fig. 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. Again, the power management here 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 window 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 window 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] [Effects] The above configuration provides the following effects. (1) A skeletal member type battery device, in other words, by using skeletal members (floor side members 5LS, 5RS and floor cross members 6FC, 6RC) incorporating the battery 11 as skeletal members, a structure 3 incorporating the battery 11 can be manufactured. 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, etc., of the battery 11. 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, by reducing the plate thickness of the metal plate used in the structure 3, for example. The structural design includes a design that meets specified conditions in terms of both safety and economy.

[0044] (2) By incorporating the battery 11 in the structural body 3 itself, a space S1 is created under the vehicle body 2. The space S1 can be used for mounting further batteries 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 can be reduced, making it possible to realize a highly safe structure 3.

[0046] (4) The framework 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 framework 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 reaches a state where it is unable to use the power of the battery 11 in the structure 3 of the vehicle body 2, the vehicle 1 can at least drive the electric windows 22 using the power of the battery 11 in the structure 23 of the door 21, making the vehicle 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 constitutes 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 structure 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 constitutes the floor of the vehicle interior 4 is provided on the upper portion of the structure 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 part 32a having a rectangular shape in a plan view. The structural part 32a defines a space S3 having a rectangular shape in a plan view that 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 of the floor side members 35LS is a framework member that is disposed on the left side of the lower center in the front-rear direction of the vehicle 30 and extends in the front-rear direction of the vehicle 30.

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

[0053] One floor cross member 36FC is a framework member that is provided across 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 framework member that is provided across 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 extending 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 extending from the front end of the other floor side member 35RS toward the front end side 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, 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] The one rear side member 39LS is a framework member extending from the rear end of the one floor side member 35LS toward the rear end side of the vehicle 30. The front end portion of the one rear side member 39LS is fixed to the rear end portion of the one floor side member 35LS.

[0059] The other rear side member 39RS is a framework member extending from the rear end of the other floor side member 35RS toward the rear end side 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 framework 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 vicinity of the rear end of one of the rear side members 39LS. The right end of the rear cross member 40 is fixed to the vicinity of the rear end of the other rear side member 39LS.

[0061] The center member 41 is a framework member that is suspended between the pair of front and rear floor cross members 36FC, 36RC. The front end of the center member 41 is fixed to the left-right center of one floor cross member 36FC. The rear end of the center member 41 is fixed to the left-right center 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 constituting the structure 32, the floor side members 35LS, 35RS and the floor cross members 36FC, 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 arranged in the front-rear direction of the vehicle 1, and an equal number of battery stacks 34 are 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 each other 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 each other 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) of the left and right floor side members 35LS, 35RS.

[0066] The battery stack 34 accommodated 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 accommodated 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 as necessary. An elastic body (spring, comb, etc.) may be provided between the battery stack 34 and the center member 41 as necessary. An electric circuit may be provided between the battery stack 34 and the left floor side member 35LS as necessary. An electric circuit may be provided between the battery stack 34 and the right floor side member 35RS as necessary. An electric circuit may be provided between the battery stack 34 and the center member 41 as necessary.

[0069] [Framework-type battery device] 7, 8, and 9, the floor side members 35LS, 35RS and the floor cross members 36FC, 36RC each have a battery 33. The battery 33 is composed of 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 front-rear 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 battery 33 is made up of a plurality of battery stacks 44 which are electrically connected in series to each other.

[0073] The floor side members 35LS, 35RS and the 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 of the first battery stack row and the second battery stack row housed in the space S3 of the structure 32, and power management of 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, for example, by 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 a right angle 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 both 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 of the side plate portions 47 may be in direct contact. The battery stack 44 and the other of the side plate portions 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 of the side plate portions 47, if necessary. An elastic body (spring, comb, etc.) may be provided between the battery stack 44 and the inner surface 48a of the other of the side plate portions 48, if necessary. An electric circuit may be provided between the battery stack 44 and the inner surface 47a of the one of the side plate portions 47, if necessary. An electric circuit may be provided between the battery stack 44 and the inner surface 48a of the other of the side plate portions 48, if necessary.

[0080] If necessary, the skeleton member main body 45 is provided with a displacement prevention part (not shown) for preventing displacement of the battery stack 44. The displacement prevention part is composed of a protrusion integrally formed on the inner surface of the skeleton member main body 45, a member attached to the inner surface of the skeleton 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 framework-type battery device, that is, by using framework members (floor side members 35LS, 35RS and floor cross members 36FC, 36RC) incorporating the battery 33 as framework members, a structure 32 incorporating the battery 33 can be manufactured. By incorporating the battery 33 in the structure 32 itself, the structural design of the structure 32 of the vehicle body 31 can be performed taking into account the rigidity, etc., of the battery 33. This may make it possible to suppress increases in the weight and dimensions of the structure 32 while incorporating the battery 33, for example, by reducing the plate thickness of the metal plate used in the structure 32.

[0083] (2) By incorporating the battery 33 in the structure 32 itself, a space S3 is created under 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 large compared to the electrical capacity of conventional vehicles.

[0084] (3) By configuring the battery 33 as the 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 framework 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 framework member main body 45 the function of a restraining body, it is possible to omit a restraining body for restraining the battery stack 34. As a result, it is 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 the center member 41 on the left side of the structural portion 32a function as a restraining body that applies 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 unit cells 43. The floor side member 35RS and the center member 41 on the right side of the structural portion 32a function as a restraining body that applies 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 unit cells 43. By giving the structural portion 32a the function of a restraining body, it is possible to omit a restraining body for restraining the battery stack 34. As a result, an increase in the weight of the vehicle body 31 can be suppressed by the amount of the restraining body omitted.

[0087] [Third embodiment] [Configuration of frame-type battery device] The skeletal member type battery device 51 shown in Fig. 11 is used as a skeletal member of a structure. The battery 53 of the skeletal member type battery device 51 is composed of a plurality of 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, for example, by bending and welding a metal plate. The frame member body 52 has a top plate portion 54, a bottom plate portion 55, and side plate portions 56 and 57 opposed to 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 stacking a plurality of solid-state batteries 59 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 56a, 57a of the both side plate portions 56, 57.

[0092] The skeleton type battery device 51 has an electrode terminal portion 18. A positive terminal 19 of the electrode terminal portion 18 is electrically connected to a positive electrode of the battery 53. A negative terminal 20 of the electrode terminal portion 18 is electrically connected to a 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. Since the structure itself has the battery 53 built in, 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, making it possible to realize a highly safe frame member type battery device 51 and structure.

[0095] (3) The framework 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 framework 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 framework member type battery device 51 and the structure.

[0096] (4) Since the frame member type battery device 51 has the electrode terminal portion 18, 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] A skeletal member type battery device 60A shown in Fig. 13(A) is used as a skeletal member of a structure. The battery 53 of the skeletal member type battery device 60A is composed of a plurality of 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 the cross-sectional structure 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 battery 53 of the skeletal member type battery device 60B is composed of a plurality of 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 the cross-sectional structure 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 connected to each other. At this time, the positive electrode terminal 19 of one electrode terminal portion 18 (18A) of the skeletal member type battery device 60A and the negative electrode terminal 20 of the skeletal member type battery device 60B are connected to each other, and the negative electrode terminal 20 of one electrode terminal portion 18 (18A) of the skeletal member type battery device 60A and the positive electrode terminal 19 of the skeletal member type battery device 60B are connected to each other. 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 part having two batteries 53 connected in series to each other can be constructed. Other functions and effects are similar to 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 battery 53 of the skeletal member type battery device 61 is composed of a plurality of 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) and the negative terminal 20 of the other skeletal member type battery device 61 (61B) are connected to each other, and the negative terminal 20 of one skeletal member type battery device 61 (61A) and the positive terminal 19 of the other skeletal member type battery device 61 (61B) are connected to each other. 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 by itself.

[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 that connect the upper ends of these pillars 65, and a lower beam 71 consisting of a lower long side beam 69 and a lower short side beam 70 that connect 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 battery of the skeletal member. The building control unit can supply power to EVs and the like in addition to electrical equipment in the building.

[0110] [Effects of the sixth embodiment]

[0111] (1) The structure 64, which uses 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, even 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, a building can be constructed in which the structures 64 themselves have batteries. 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 in 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 manufacturing method of 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 of implementing a battery oriented structural design (BOSD) method. BOSD is a design concept for designing an optimal structure for a structure in which the structure itself has a battery. More specifically, the structural design step ST1 is a step of designing an optimal structure for the structure, assuming that at least one of the multiple skeletal members constituting the structure has a battery, in order to satisfy the conditions that the structure must satisfy structurally (conditions required as a structure) and to maximize the total electric capacity of the batteries in the structure.

[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 conditions that the structure should satisfy (hereinafter referred to as "structural conditions") and data (hereinafter referred to as "structure-battery inter-phase data") that indicates the relationship between the structure and the total capacity of the battery (electrical capacity of the structure), and to analyze and optimize the design model to obtain the optimal structure. The structure-battery inter-phase data can be created in advance by actual measurement or by computer calculation (computer simulation) based on the volume, weight, type of battery, energy density, power density, etc. of the battery that can be mounted in various structures 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 process from the creation of the design model to the optimization can be performed using a computer. That is, an application program for implementing the design method of the structure is installed in the computer, the application program is started, structural conditions are set, and then the structural design process is executed by the application program, thereby performing the process from the creation of the design model to the optimization.

[0117] Structural conditions include the dimensions, weight, and strength of the structure, as well as the dimensions, weight, strength, rigidity, and arrangement (position within the structure, positional relationship with 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 (manned vehicle, manned aircraft, 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 the design of a structure or an article that the structure possesses is designed and then structural design is carried out, the structural conditions may include the shape and dimensions of the article for specifying the designed design, the shape and dimensions of each part of the structure, etc.

[0120] The structural conditions may include the electric capacity of the structure to be realized, that is, the total capacity of the batteries in the structure. The structural conditions may also include the number and arrangement of the skeletal member type battery devices that constitute the structure. The structural conditions may also include various structural mechanical quantities, including the batteries of the skeletal member type battery device. The structural mechanical quantities include the 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 layers, and arrangement (position and stacking direction in the skeletal member type battery device) of the battery stack that constitutes the battery. The mechanical properties of the battery stack may include the rigidity, elasticity, and the like of the battery stack, which is assumed to be a battery stack in which a plurality of unit cells are integrated. The conditions may also include the dimensions, weight, strength, mechanical properties, and arrangement (position and stacking direction in the skeletal member type battery device) of the battery. The mechanical properties of the battery may include the rigidity, elasticity, and shape of the battery, which is assumed to be a battery stack in which a plurality of battery stacks are integrated by constraint (constraint by the skeletal member). The conditions may also include the type of cells constituting the battery stack (all-solid-state battery or semi-solid-state battery). The conditions may also include the energy density, power density, etc. of the cells constituting 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 internal space of 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 internal space of the structure.

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

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

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

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

[0125] [Effects of the Seventh Embodiment] According to the above method, it is possible to design an optimal structure for a structure in which the structure itself has a battery, that is, a structure that satisfies structural conditions and maximizes total electric capacity. Then, based on the optimal structure of the structure, a plurality of frame members are manufactured and joined together, making it possible to manufacture a structure with an optimal structure. This can promote, for example, the integrated development of the body and battery of an EV.

[0126] [Eighth embodiment] [Battery-oriented structure design method] As shown in Fig. 19, the battery-oriented structure design method of one embodiment includes a structural condition parameter setting step ST11 and an optimization calculation step ST12. The structural condition parameter setting step ST11 and the optimization calculation step ST12 may be included in the structural design step ST1 in Fig. 18, for example. The structure design method of one embodiment can be realized by installing a predetermined program created based on the technical concept of the present invention in a computer and executing it.

[0127] The structural condition parameter setting step ST11 is a step for setting, in the computer, parameters that represent the conditions that the structure should structurally satisfy. The optimization calculation step ST12 is a step in which the computer calculates the optimal structure of the structure so as to satisfy the conditions that the structure must satisfy structurally and to maximize the total electrical capacity of the batteries that the structure has as its own components.

[0128] According to the above method, it is possible to design an optimal structure for a structure in which the structure itself has a battery, that is, a structure that satisfies structural conditions and maximizes total electric capacity. Then, based on the optimal structure of the structure, a plurality of frame members are manufactured and joined together, making it possible to manufacture a structure with an optimal structure. This can promote, for example, the integrated development of the body and battery of an EV.

[0129] [Ninth embodiment] [Battery-oriented structural design system] 20, a battery-oriented structure design system 80 of one embodiment has an input unit 81, a structural condition setting unit 82, and an optimization calculation unit 83. The input unit 81, the structural condition setting unit 82, and the optimization calculation unit 83 can be realized by installing a predetermined program created based on the technical concept of the present invention in a computer and executing it.

[0130] The input unit 81 is a functional block for inputting parameters that represent conditions that a structure should structurally satisfy. The structural condition setting unit 82 is a functional block that sets structural condition parameters based on the information input by the input unit 81 . The optimization calculation unit 83 is a functional block that calculates the optimal structure of the structure based on the structural condition parameters set by the structural condition setting unit 82, so as to satisfy the conditions that the structure must satisfy structurally and to maximize the total electrical capacity of the batteries that the structure has as its own components.

[0131] According to the above system, it is possible to design an optimal structure for a structure that itself has a battery, that is, a structure that satisfies structural conditions and maximizes total electric capacity. Then, based on the optimal structure of the structure, it is possible to manufacture a structure with an optimal structure by manufacturing and connecting multiple frame members to each other. This can promote, for example, the integrated development of the body and battery of an EV.

[0132] [Tenth embodiment] [Design and manufacture of pressure hull] The pressure hull of a submarine is an important structure that determines the design depth of the submarine. When designing the pressure hull, it is important to balance the weight and buoyancy of the pressure hull.

[0133] The pressure hull of a submarine has a cylindrical body and spherical end plates (heads) that close the front and rear ends of the cylindrical body. The weight and size (dimensions) of the cylindrical body greatly affect the weight and buoyancy of the pressure hull.

[0134] Most of the material of the pressure hull is steel plate. Therefore, by using stronger steel plate, the same design depth can be achieved with thinner steel plate. By making the steel plate of the pressure hull thinner, the weight of the pressure hull can be reduced. However, if the weight of the pressure hull becomes too light, the buoyancy becomes too large compared to the weight of the pressure hull, and the submarine's diving performance is impaired.

[0135] 21, a plurality of T-frames 92 are provided on an outer circumferential surface 92a of a cylindrical portion 91 of a pressure hull 90. The T-frames 92 are annular reinforcing members extending in the circumferential direction of the cylindrical portion 91. The T-frames 92 are arranged at a predetermined pitch in the axial direction of the cylindrical portion 91. The T-frames 92 have legs (protruding portions) 92a protruding from the outer circumferential surface 91a of the cylindrical portion 91, and flange portions 92b protruding from the tip ends of the legs 92a in the front and rear directions, i.e., in the axial direction of the cylindrical portion 91.

[0136] The seventh to ninth embodiments can be used in the design and manufacture of the pressure hull. For example, the manufacturing method of the structure shown in Fig. 18 can be used in the manufacturing method of the pressure hull 90. In this case, the structural design step ST1 is a step of designing an optimal structure of the pressure hull 90 so that the pressure hull 90 satisfies structural conditions and maximizes the total electric capacity of the batteries in the pressure hull 90, on the premise that at least one of the multiple T-shaped frames 92 of the pressure hull 90 has a battery. According to this method, by including the weight, strength, mass, dimensions, shape, etc. of the battery in the structural conditions, it is possible to design an optimal structure of the pressure hull 90 in which the pressure hull 90 itself has a battery.

[0137] Furthermore, by including in the structural conditions the provision of a skeletal member between adjacent T-frames 92, it is possible to design an optimal structure for the pressure shell 90 in which a skeletal member type battery device 93 is provided between adjacent T-frames 92, as shown in Fig. 22. The skeletal member type battery device 93 may be fixed to the cylindrical portion 91 via the T-frame 92, or may be fixed directly to the cylindrical portion 91 without the T-frame 92. A damper such as rubber may be provided between the skeletal member type battery device 93 and the T-frame 92, or between the skeletal member type battery device 93 and the outer circumferential surface 91a of the cylindrical portion 91.

[0138] The framework member manufacturing step ST2 is a step for manufacturing components (pressure hull components) that constitute the pressure hull 90 of the optimal structure obtained in the structural design step ST1. The components manufactured here may include the steel plate member (cylindrical portion) of the cylindrical portion 91, the end plates (end plates), the T-frame 92, and the framework member type battery device 93, etc.

[0139] The skeleton member joining step ST3 is a step of joining together the components manufactured in the skeleton member manufacturing step ST2.

[0140] Through the above steps ST1 to ST3, the pressure hull 90 is manufactured.

[0141] [Effects of the Tenth Embodiment] According to the above method, it is possible to design an optimal structure for the pressure hull 90 in which the pressure hull 90 itself has a battery, that is, a structure for the pressure hull 90 that satisfies structural conditions and maximizes the total electric capacity. Then, based on the optimal structure for the pressure hull 90, a plurality of components including the cylindrical portion 91 and the T-frame 92 are manufactured and joined together, making it possible to manufacture a pressure hull 90 with an optimal structure. This can facilitate, for example, integrated development of pressure hulls and batteries for submarines.

[0142] According to the above method, it is possible to design an optimal structure for the pressure hull 90 by including the weight of the batteries contained in the pressure hull 90 itself in the weight of the pressure hull 90. Specifically, by using high-strength thin steel plates for the pressure hull 90, the weight of the steel plate portion of the pressure hull 90 can be reduced, while the weight and strength of the batteries can be utilized to prevent the overall weight of the pressure hull 90 from becoming too light. This makes it possible to balance the overall weight of the pressure hull 90 with its buoyancy, thereby realizing a submarine with high submergence and surfacing performance.

[0143] According to the above method, since the pressure hull 90 itself has a battery, it is possible to improve the power storage capacity of the submarine without using space inside the submarine (inside the pressure hull 90) for installing the battery. For example, as shown in FIG. 22, by using the space between adjacent T-shaped frames 92 as a battery installation space, it is possible to improve the power storage capacity (electrical capacity) of the submarine without using space inside the submarine (inside the pressure hull 90) for installing the battery. By improving the power storage capacity of the submarine, the continuous submerged voyage performance by the battery of the submarine is improved. Note that the method of storing power in the battery provided outside the pressure hull 90 is arbitrary. Also, the method of supplying power from the battery provided outside the pressure hull 90 to the load device (electric motor, auxiliary machinery, etc.) provided inside the pressure hull 90 is arbitrary.

[0144] [others] The present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, the vehicle is an EV, but the vehicle may be an HV (Hybrid Vehicle) or a PHV (Plug-in Hybrid Vehicle).

[0145] In the above embodiment, a skeleton type battery device having a rectangular cross section is exemplified, but the cross section of the skeleton 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. In addition, the shape of the skeleton type battery device may be a plate shape.

[0146] In addition, in the above embodiment, the battery of the skeletal component type battery device is constituted by a solid-state battery, but provided that safety can be guaranteed, it is also possible to constitute the battery of the skeletal component type battery device by a battery other than a solid-state battery, i.e., a secondary battery that uses a liquid as an electrolyte.

[0147] In addition, 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.

[0148] Moreover, even in a skeletal member body having a closed cross-sectional structure, it is desirable to provide an opening in a part of the skeletal member body in consideration of convenience such as maintenance of a skeletal member type battery device, recovery and refilling of batteries built into a skeletal member type battery device, etc. The skeletal member body may be configured to be separable, provided that sufficient strength is ensured.

[0149] In addition, 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.

[0150] In the fourth and fifth embodiments, when two skeletal member type battery devices are joined together, the batteries of both skeletal member type battery devices are electrically connected in series, but this is not limited thereto. In other words, when two skeletal member type battery devices are joined together, the batteries of both skeletal member type battery devices may be electrically connected in parallel.

[0151] Furthermore, the moving body of the present invention is not limited to a vehicle, and 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. Hybrid ships include submarines equipped with a power generation device that generates electricity using nuclear energy or chemical energy and a storage battery that stores the generated electricity.

[0152] In the sixth embodiment, a completely rectangular rigid frame unit is shown as a rigid frame unit (building unit) of a building having a steel frame rigid frame unit structure, but the present invention is not limited to this. The structure of the present invention can also be applied to a special-shaped rigid frame unit having a sloped portion or the like in part.

[0153] The structure of the present invention may be a structure other than a moving body or a building. The structure of the present invention may be applied to furniture structures, electrical appliance structures, and the like.

[0154] 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 moving 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 an electrical appliance, etc.

[0155] Furniture includes chairs, tables, shelves, etc., having 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 having an electric mechanism, the structure of the chair can be designed taking into account the rigidity of the battery, etc. Examples of chairs having an electric mechanism include reclining seats, massage chairs, etc.

[0156] Electrical appliances include refrigerators. By applying the skeletal member type battery device of the present invention to the skeletal member of the refrigerator structure, the structure of the refrigerator can be designed taking into account the rigidity of the battery, etc. In addition, since the refrigerator structure has a battery, the refrigerator can maintain its cooling function by using the power stored in the refrigerator itself even during a power outage without having to provide a separate battery unit.

[0157] This specification discloses at least the following: [Framework-type battery device] In one embodiment, the skeletal member type battery device is a skeletal member that is coupled with other skeletal members to form a structure. A skeleton type battery device in one embodiment has 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.

[0158] The battery of the frame member type battery device of one embodiment is configured to have a plurality of unit cells stacked in the distance direction between opposing inner faces of a frame member body. In one embodiment of the framework-type battery device, the battery is sandwiched and restrained between the opposing inner surfaces of the framework body.

[0159] The unit cells constituting the battery of the frame member type battery device of one embodiment are solid-state batteries.

[0160] In one embodiment, the framework 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.

[0161] In one embodiment, when two skeletal component type battery devices are connected to each other, the positive terminal of one skeletal component type battery device is electrically connected to the negative terminal of the other skeletal component type battery device, and the negative terminal of one skeletal component type battery device is electrically connected to the positive terminal of the other skeletal component type battery device.

[0162] In one embodiment, the structure is a moving body structure.

[0163] [Structure] In one embodiment, the structure includes a frame-type battery device.

[0164] In one embodiment, the structure defines a space for housing a plurality of battery stacks. The battery stack is formed by stacking unit cells.

[0165] [Mobile object] The moving body of the embodiment has the structure of the embodiment.

[0166] [Method of manufacturing the structure] A method for manufacturing a structure according to an embodiment is a method for manufacturing a structure by bonding a plurality of skeletal members to each other, at least one of the plurality of skeletal members being the skeletal member type battery device according to an embodiment.

[0167] A method for manufacturing a structure of an embodiment is a method for manufacturing a structure of an embodiment. A method for manufacturing a structure according to an embodiment includes a structural design step of designing an optimal structure of the structure so as to satisfy the structural conditions that the structure must satisfy and to maximize the total electric 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.

[0168] [Battery-oriented structural design method] The battery-oriented structural design method of one embodiment is a method for designing the structure of a structure having the framework-type battery device of one embodiment as a framework member. A battery-oriented structural design method according to 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.

[0169] The battery-oriented structural design method of one embodiment is a method for designing a structure in which the structure itself has a battery. More specifically, a battery-oriented structural design method of an embodiment is a method for designing a structure of a structure using a computer, the method comprising: The computer includes: a structural condition setting step for setting structural conditions that the structure should satisfy; The computer, and an optimization calculation step of calculating an optimal structure of the structure based on the set structural conditions so that the structure satisfies the structural conditions and so as to maximize the total electrical capacity of the batteries that the structure has as its own components. In one embodiment, the battery-oriented structural design method designs an optimal structure for the structure so that the structure satisfies structural requirements and maximizes the total electrical capacity of the structure's batteries.

[0170] In one embodiment, a battery-oriented structural design method includes a computer-assisted method for designing a pressure hull structure of a submarine, the method comprising: The computer includes: a structural condition setting step for setting structural conditions to be satisfied by the pressure hull; The computer, and an optimization calculation step of calculating an optimal structure of the pressure hull based on the set structural conditions so that the pressure hull satisfies the structural conditions and so as to maximize the total electrical capacity of the batteries that the pressure hull has as its own components.

[0171] [Battery-oriented structural design system] According to one embodiment, a battery-oriented structural design system is a system for designing a structure of a structure using a computer, comprising: The system comprises: an input unit for inputting parameters representing structural conditions that the structure should satisfy; a structural condition setting unit that sets the structural conditions based on input parameters; and an optimization calculation unit that calculates an optimal structure of the structure based on the set structural conditions so that the structure satisfies the structural conditions and so as to maximize the total electrical capacity of the batteries that the structure has as its own components. In one embodiment, the battery-oriented structural design system designs an optimal structure for a structure so that the structure meets structural requirements and maximizes the total electrical capacity of the structure's batteries.

[0172] In one embodiment, a battery-oriented structural design system is a system for designing a pressure hull structure of a submarine using a computer, comprising: The system comprises: an input unit for inputting parameters representing structural conditions that the pressure hull should satisfy; a structural condition setting unit that sets the structural conditions based on input parameters; and an optimization calculation unit that calculates an optimal structure for the pressure hull based on the set structural conditions so that the pressure hull satisfies the structural conditions and so that the pressure hull maximizes the total electric capacity of the batteries that the pressure hull has as its own components. In one embodiment, the battery oriented structural design system designs an optimal structure for the pressure hull so that the pressure hull meets structural requirements and maximizes the total electrical capacity of the batteries in the pressure hull.

[0173] [Battery-oriented structural design program] A battery-oriented structural design program according to one embodiment is a program for causing a computer to function as a system for designing a structure of a structure, the program comprising: The computer, an input unit for inputting parameters representing structural conditions that the structure should satisfy; a structural condition setting unit that sets structural conditions that the structure should satisfy based on input parameters; and an optimization calculation unit that calculates the optimal structure of the structure based on the set conditions so that the structure satisfies the structural conditions and so as to maximize the total electrical capacity of the battery that the structure has as its own component. According to one embodiment of the battery-oriented structural design program, by installing and executing the program on one or more computers, the one or more computers can function as the battery-oriented structural design system of one embodiment. According to one embodiment of the battery-oriented structural design program, by installing and executing the program on one or more computers, the battery-oriented structural design method of one embodiment can be implemented using the one or more computers.

[0174] A battery-oriented structural design program according to one embodiment is a program for causing a computer to function as a system for designing a structure of a pressure hull of a submarine, the program comprising: The computer, an input unit for inputting parameters representing structural conditions that the pressure hull should satisfy; a structural condition setting unit that sets structural conditions that the pressure hull should satisfy based on input parameters; and an optimization calculation unit that calculates an optimal structure of the pressure hull so that the pressure hull satisfies the structural conditions based on the set conditions and so that the total electric capacity of the battery that the pressure hull has as a component thereof is maximized. According to one embodiment of the battery-oriented structural design program, by installing and executing the program on one or more computers, the one or more computers can function as the battery-oriented structural design system of one embodiment. According to one embodiment of the battery-oriented structural design program, by installing and executing the program on one or more computers, the battery-oriented structural design method of one embodiment can be implemented using the one or more computers. [Explanation of symbols]

[0175] 1 vehicle 2. Body 3 structure 4 Cabin 5LS Floor side member (framework member, framework type battery device) 5RS Floor side member (framework member, framework type battery device) 6FC Floor cross member (framework member, framework type battery device) 6RC Floor cross member (framework member, framework 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) 11 Battery (battery section) 12 Battery stack 13. Frame member body 15 Side plate part 15a Inside 16 Side plate part 16a Between the inner surfaces 17 Solid-state battery (single cell) 18 Electrode terminal section 19 Positive terminal 20 Negative terminal 21 Door 23 Structure 24 Frame components (frame-type battery devices) 25 Frame components (frame-type battery devices) 26 Frame components (frame-type battery devices) 27 Frame components (frame-type battery devices) 30 Vehicles 31 Body 32 Structure 33 Batteries 34 Battery Stack 35LS Floor side member (framework member, framework type battery device) 35RS Floor side member (framework member, framework type battery device) 36FC Floor cross member (framework member, framework type battery device) 36RC Floor cross member (framework member, framework type battery device) 37LS Front side member (framework) 37RS Front side member (framework) 38 Front cross member (framework) 39LS Rear side member (framework) 39RS Rear side member (framework) 40 Rear cross member (framework) 41 Center member (framework member) 44 Battery Stack 45 Frame member body 47 Side plate part 47a Inside 48 Side plate part 48a Inside 49 Solid-state battery (single cell) 51 Frame-type battery device 52 Frame member body 53 Batteries 56 Side plate part 56a Inside 57 Side plate part 57a Inside 58 Battery Stack 59 Frame-type battery device 60A Frame-type battery unit 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) 80 Design System 81 Input section 82 Structural condition setting part 83 Optimization Calculation Section 90 Pressure hull (skeletal member) 92 T-frame (framework) 93 Frame-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 ST11 Structural condition parameter setting step ST12 Optimization calculation step ST2: Frame material manufacturing step ST3: Frame member attachment step

Claims

1. A method for designing a structure of a structure using a computer, comprising: The computer includes: a structural condition setting step for setting structural conditions that the structure should satisfy; The computer, and an optimization calculation step of calculating an optimal structure of the structure based on the set structural conditions so that the structure satisfies the structural conditions and so as to maximize the total electrical capacity of the batteries that the structure has as its own components.

2. The structure has a frame member type battery device, The frame member type battery device is a frame member that is combined with another frame member to form the structure, The frame member type battery device has a frame member main body having a hollow cross-sectional structure, the battery is a component of the frame-type battery device; The battery-oriented structural design method according to claim 1 , wherein the battery is provided in at least a portion of a hollow portion of the skeletal member body.

3. A system for designing a structure of a structure using a computer, comprising: The system comprises: an input unit for inputting parameters representing structural conditions that the structure should satisfy; a structural condition setting unit that sets structural conditions that the structure should satisfy based on the input parameters; and an optimization calculation unit that calculates an optimal structure of the structure based on set structural conditions so that the structure satisfies the structural conditions and so that the total electrical capacity of the batteries that the structure has as its own components is maximized.

4. The structure has a frame member type battery device, The frame member type battery device is a frame member that is combined with another frame member to form the structure, The frame member type battery device has a frame member main body having a hollow cross-sectional structure, the battery is a component of the frame-type battery device; The battery-oriented structural design system according to claim 3 , wherein the battery is provided in at least a portion of a hollow portion of the skeletal member body.

5. A program for causing a computer to function as a system for designing the structure of a structure, The computer, an input unit for inputting parameters representing structural conditions that the structure should satisfy; a structural condition setting unit that sets structural conditions that the structure should satisfy based on the input parameters; and an optimization calculation unit that calculates an optimal structure of the structure based on set structural conditions so that the structure satisfies the structural conditions and so that the total electrical capacity of the batteries that the structure has as its own components is maximized.

6. The structure has a frame member type battery device, The frame member type battery device is a frame member that is combined with another frame member to form the structure, The frame member type battery device has a frame member main body having a hollow cross-sectional structure, the battery is a component of the frame-type battery device; The battery-oriented structural design program according to claim 5 , wherein the battery is provided in at least a part of the hollow portion of the frame member main body.

7. A method for designing a pressure hull structure for a submarine using a computer, comprising the steps of: The computer includes: a structural condition setting step for setting structural conditions to be satisfied by the pressure hull; The computer, and an optimization calculation step of calculating an optimal structure of the pressure hull based on the set structural conditions so that the pressure hull satisfies the structural conditions and so as to maximize the total electrical capacity of the batteries that the pressure hull has as its own components.

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