Battery device and method of manufacturing battery device

Abstract

To provide a technology for a battery device having a battery pack that is capable of improving easiness of assembly and replacement of a battery pack can be improved.SOLUTION: A battery device comprises a rack having a support member, and a battery unit installed on the support member of the rack. The battery unit includes a battery tray, and a battery pack loaded on the battery tray. An outer peripheral part of the battery tray has a fitting part that is configured to be fitted to a roller jig for sliding the battery unit on the support member.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to a battery device and a method for manufacturing a battery device. [Background technology]

[0002] Patent Document 1 discloses a power storage device. The power storage device includes a battery board and a battery pack disposed on a support plate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2016 / 129385 Summary of the Invention [Problem to be solved by the invention]

[0004] Consider a battery device including a battery pack. As the battery pack becomes larger and heavier, it becomes more difficult to assemble and replace the battery pack.

[0005] One object of the present disclosure is to provide a technique that can improve the ease of assembly and replacement of a battery pack in a battery device including a battery pack. [Means for solving the problem]

[0006] The first aspect relates to a battery device. The battery device is A rack having a support member; A battery unit installed on a support member of a rack; Equipped with. The battery unit includes a battery tray and a battery pack mounted on the battery tray. The outer periphery of the battery tray has a fitting portion configured to fit with a roller jig for sliding the battery unit on the support member.

[0007] The second aspect relates to a method for manufacturing a battery device. The battery device includes a rack having a support member and a battery unit installed on the support member of the rack. The battery unit includes a battery tray and a battery pack mounted on the battery tray. The battery tray has a fitting portion on its outer periphery. The method for manufacturing a battery device includes: Attaching a roller jig to a fitting portion of a battery tray for sliding the battery unit on the support member; The battery unit with the roller jig attached is slid onto the support member, and the battery unit is installed in the rack. Includes. Effect of the Invention

[0008] According to the present disclosure, the outer periphery of the battery tray of the battery unit has a fitting portion configured to fit with a roller jig. The roller jig is attached to the fitting portion. The battery unit to which the roller jig is attached can be easily slid on the support member. In other words, the "ease of movement" of the battery unit is improved. Therefore, the battery unit can be easily installed (housed) in a rack. Also, the battery unit can be easily pulled out from the rack. In other words, the ease of assembly and replacement of the battery unit is improved. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a schematic diagram showing a configuration example of a battery device. [Diagram 2] FIG. 2 is a diagram illustrating an example of the configuration of a battery unit. [Diagram 3] FIG. 2 is a diagram illustrating an example of the configuration of a battery device. [Figure 4] 13A and 13B are diagrams for explaining a jig and a fitting portion. [Diagram 5] FIG. 13 is a diagram for explaining an example of a jack jig. [Figure 6] 13A and 13B are diagrams for explaining another example of a jack jig. [Figure 7]FIG. 13 is a diagram for explaining an example of a roller jig. [Figure 8] FIG. 13 is a diagram for explaining an example of rail alignment. [Figure 9] FIG. 13 is a diagram for explaining an example of rail alignment. [Figure 10] FIG. 13 is a diagram for explaining an example of horizontal alignment. [Figure 11] 11A and 11B are diagrams for explaining an example of alignment in the depth direction. [Figure 12] 11A and 11B are diagrams for explaining an example of transport of a battery unit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0011] 1. Overview of the battery device 1 is a schematic diagram showing an example of the configuration of a battery device 1 according to this embodiment. The battery device 1 includes at least one battery unit 10 and a rack 100 that houses the battery unit 10. The battery unit 10 is replaceable. In other words, the battery unit 10 can be inserted into the rack 100 from outside, and the battery unit 10 can also be removed from inside the rack 100 to the outside.

[0012] First, the coordinate system will be described. The XY plane is the plane on which the battery unit 10 is placed inside the rack 100. The Z direction is the direction perpendicular to the XY plane. Typically, the XY plane is a horizontal plane, and the Z direction is the vertical direction. The X direction (first direction) is the depth direction. The Y direction (second direction) is the lateral direction perpendicular to the X direction. As will be described later, when the battery unit 10 is assembled or replaced, the battery unit 10 is moved parallel to the X direction. That is, the battery unit 10 is inserted into or removed from the rack 100 along the X direction.

[0013] The rack 100 has a storage space 110 for storing the battery unit 10. More specifically, the rack 100 includes a plurality of support columns 120 extending in the Z direction and a support member 130 parallel to the XY plane. The support member 130 is fixed to the plurality of support columns 120. The support member 130 supports the battery unit 10. In other words, the battery unit 10 is installed on the support member 130. Therefore, the space above the support member 130 becomes the storage space 110. The storage space 110 can also be called a slot. The material of the rack 100 is, for example, steel. The rack 100 may include a top plate and a door, which are not shown.

[0014] Typically, the battery device 1 includes a plurality of battery units 10. In this case, the rack 100 has a plurality of storage spaces 110 (slots) for storing each of the plurality of battery units 10. More specifically, the plurality of storage spaces 110 are arranged in the Z direction, that is, arranged in layers. A plurality of support members 130 are provided to correspond to the plurality of storage spaces 110. The plurality of battery units 10 are installed on each of the plurality of support members 130. As a result, the plurality of battery units 10 are also arranged in layers. The plurality of battery units 10 may be electrically connected to each other. In the example shown in FIG. 1, the number of storage spaces 110 and battery units 10 is six. However, the number is not limited to six.

[0015] As will be described in detail later, the battery unit 10 moves (slides) on the support member 130 along the X direction. As long as the battery unit 10 can move (slide) along the X direction, the shape of the support member 130 is not particularly limited. In the example shown in FIG. 1, the support member 130 is an elongated rail extending in the X direction. More specifically, the support member 130 supporting one battery unit 10 includes a pair of rails 130L, 130R. The left rail 130L is fixed to the support column 120 on the left side in FIG. 1. On the other hand, the right rail 130R is fixed to the support column 120 on the right side in FIG. 1. The left rail 130L and the right rail 130R are parallel to each other and extend in the X direction together. One battery unit 10 is installed on the pair of rails 130L, 130R.

[0016] In the following description, the support member 130 is considered to be a pair of rails 130L, 130R as shown in Fig. 1. For convenience, the pair of rails 130L, 130R will be collectively referred to as "rails 130". When generalizing, "rails 130" will be replaced with "support member 130".

[0017] 2 is a diagram showing an example of the configuration of the battery unit 10. The battery unit 10 includes a battery pack 20 and a battery tray 30. The battery pack 20 functions as a storage battery. The battery tray 30 is a tray for the battery pack 20. In other words, the battery pack 20 is mounted on the battery tray 30.

[0018] As shown in FIG. 2, the battery tray 30 includes a frame 40 , a bottom plate 50 , and a support member 60 .

[0019] The frame 40 can also be called the "periphery" of the battery tray 30. The frame 40 includes a first frame 41 (first peripheral portion) parallel to the X direction, and a second frame 42 (second peripheral portion) parallel to the Y direction. The first frame 41 includes a left frame 41L and a right frame 41R. The second frame 42 includes a front frame 42F and a rear frame 42B. The frame 40 is made of a material such as steel.

[0020] The lower plate 50 is surrounded by the frame 40 and forms the lower surface of the battery tray 30 .

[0021] The support member 60 is a member for supporting the battery pack 20, and is installed on the frame 40. In the example shown in FIG. 2, the support member 60 is installed on the first frame 41. The battery pack 20 is installed on this support member 60. For example, the support member 60 includes a bracket 61 for fixing the battery pack 20. The support member 60 may further include an insulator 62 for insulating the battery pack 20 from the frame 40. The insulator 62 is interposed between the frame 40 and the bracket 61.

[0022] The battery unit 10 is constructed by fixing the battery pack 20 onto the battery tray 30. Such a battery unit 10 may also be called a "battery subassembly."

[0023] 3 is an XY plan view and a YZ cross-sectional view showing a state in which a battery unit 10 (battery subassembly) is installed on rails 130 of a rack 100. The YZ cross-sectional view shows a YZ cross section taken along line A-A' in the XY plan view. A first frame 41 parallel to the X direction is installed on rails 130 parallel to the X direction. More specifically, a left frame 41L is installed on a left rail 130L, and a right frame 41R is installed on a right rail 130R.

[0024] The use of the battery device 1 described above is not particularly limited. For example, the battery device 1 is used as a stationary storage battery. The battery device 1 may be incorporated into an energy infrastructure. The battery device 1 may be installed as a backup power source.

[0025] The battery pack 20 used in the battery device 1 according to this embodiment may be an in-vehicle battery pack. Here, an in-vehicle battery pack refers to a battery pack developed and produced as a power source for electric vehicles or hybrid vehicles. Such an in-vehicle battery pack is "repurposed" as the battery pack 20 of the battery device 1.

[0026] For example, an in-vehicle battery pack after being used in a vehicle is reused as the battery pack 20 of the battery device 1. Since the output and performance of an in-vehicle battery pack are originally very high, even a used in-vehicle battery pack can be fully used for purposes other than vehicles. It is expected that the number of in-vehicle battery packs produced and used will continue to increase in the future. Reusing such abundant in-vehicle battery packs as the battery pack 20 of the battery device 1 is not only favorable for the environment, but also favorable from the viewpoint of energy conservation.

[0027] As another example, a new in-vehicle battery pack may be used as the battery pack 20 of the battery device 1 from the beginning. Since the number of in-vehicle battery packs produced is very large, the production cost is low. In other words, in-vehicle battery packs are superior in terms of number and cost. Repurposing such abundant and low-cost in-vehicle battery packs is preferable from the viewpoint of energy conservation.

[0028] When an in-vehicle battery pack is used as the battery pack 20 of the battery device 1, it is desirable to insulate the in-vehicle battery pack from the frame 40 from the viewpoint of voltage resistance design. For that purpose, it is desirable to interpose an insulator 62 (see FIG. 2) between the in-vehicle battery pack and the frame 40.

[0029] 2. Improved mobility of the battery unit 3, the battery unit 10 including the battery pack 20 is placed on rails 130. When the battery unit 10 is assembled or replaced, the battery unit 10 moves (slides) along the X direction on the rails 130. As the battery pack 20 becomes larger and its weight increases, it becomes more difficult to move the battery unit 10 including the battery pack 20, making assembly or replacement more difficult.

[0030] Therefore, this embodiment proposes a technique that can improve the ease of assembly and replacement of the battery unit 10. First, a method for improving the "ease of movement" of the battery unit 10 will be described.

[0031] According to the present embodiment, a jig 200 for improving the ease of movement of the battery unit 10 when assembling and replacing the battery unit 10 is attached to the battery unit 10. The jig 200 for improving the ease of movement of the battery unit 10 includes a jack jig 210 and a roller jig 220. The jack jig 210 is a jig for jacking up the battery unit 10. The roller jig 220 is a jig for sliding the battery unit 10 on the rails 130. Before explaining specific examples of the jack jig 210 and the roller jig 220, the structure on the battery unit 10 side for attaching the jig 200 will be explained.

[0032] According to this embodiment, the frame 40 (outer periphery) of the battery tray 30 of the battery unit 10 has a "fitting portion 45" configured to fit with the jig 200. For example, the first frame 41 (first outer periphery) parallel to the X direction has the fitting portion 45. In the example shown in FIG. 3, the cross-sectional shape of the fitting portion 45 in the YZ plane is a C-shape that opens toward the outside of the battery tray 30 in the Y direction. For example, the cross-sectional shape of the fitting portion 45L of the left frame 41L in FIG. 3 is a C-shape that opens toward the left direction. On the other hand, the cross-sectional shape of the fitting portion 45R of the right frame 41R is a C-shape that opens toward the right direction.

[0033] Fig. 4 shows a state in which the jig 200 is attached to the fitting portion 45 of the first frame 41. The format of Fig. 4 is similar to that of Fig. 3. As shown in Fig. 4, a part of the jig 200 is inserted into the fitting portion 45, whereby the jig 200 and the fitting portion 45 (first frame 41) are fitted together. In the example shown in Fig. 4, the jig 200 is placed on the rail 130 and is interposed between the rail 130 and the frame 40.

[0034] FIG. 5 is a diagram for explaining an example of a jacking jig 210 for jacking up the battery unit 10. The jacking jig 210 includes a first member 211 and a second member 212. The first member 211 and the second member 212 are in contact with each other at a contact surface 213. The contact surface 213 is an inclined surface. More specifically, the contact surface 213 is an inclined surface that faces obliquely upward when viewed from the first member 211, and is an inclined surface that faces obliquely downward when viewed from the second member 212. The lower surface of the first member 211 is in contact with the rail 130. A part of the second member 212 is inserted into the fitting portion 45 of the first frame 41, whereby the jacking jig 210 is attached to the fitting portion 45.

[0035] The jack jig 210 and the fitting portion 45 may be fixed by a pin 214 so that the jack jig 210 does not come off from the fitting portion 45. In this case, as shown in FIG. 5 , a through hole 44 into which the pin 214 is inserted is present on the upper surface of the fitting portion 45. After the second member 212 of the jack jig 210 is inserted into the fitting portion 45, the pin 214 is inserted into the through hole 44. The pin 214 fixes the jack jig 210 (the second member 212) and the fitting portion 45.

[0036] In addition, a bolt 215 (e.g., a hexagonal bolt) penetrates the first member 211 in the horizontal direction to connect the first member 211 and the second member 212. In the example shown in FIG. 5, the bolt 215 penetrates the first member 211 in the Y direction. The bolt 215 can be tightened or loosened by turning the bolt 215 with a wrench (e.g., a hexagonal wrench). When the bolt 215 is tightened, the horizontal force is converted into a Z-direction force via the contact surface 213 (inclined surface), which pushes up the second member 212. The first frame 41, i.e., the battery unit 10, is jacked up by pushing up the second member 212 in the Z direction. In other words, the battery unit 10 can be easily jacked up just by turning the bolt 215 with a wrench.

[0037] FIG. 6 is a diagram for explaining another example of the jack jig 210. In the example shown in FIG. 6, the arrangement of the first member 211 and the second member 212 is rotated 90 degrees compared to the case of FIG. 5. The bolt 215 penetrates the first member 211 in the X direction. The second frame 42 has a through hole 43 penetrating the second frame 42 in the X direction. The position of the through hole 43 corresponds to the fitting portion 45 of the first frame 41. In particular, the position of the through hole 43 corresponds to the bolt 215 of the jack jig 210 attached to the fitting portion 45. The wrench is inserted into the through hole 43 from the front of the second frame 42 and reaches the bolt 215 of the jack jig 210. Then, the battery unit 10 is jacked up by turning the bolt 215 with the wrench. The configuration shown in FIG. 6 is particularly suitable when the side space of the battery device 1 is narrow. Even if the side space of the battery device 1 is narrow, the jack jig 210 can be easily operated by inserting a wrench from the front or rear.

[0038] FIG. 7 is a diagram for explaining an example of a roller jig 220 for sliding the battery unit 10 on the rail 130. The format of FIG. 7 is the same as that of FIG. 3 and FIG. 4. As shown in FIG. 7, a part of the roller jig 220 is inserted into the fitting portion 45, whereby the roller jig 220 is attached to the fitting portion 45. In addition, a part of the roller jig 220 that is not inserted into the fitting portion 45 has a roller ball 222 that contacts the rail 130. This roller ball 222 rolls on the rail 130. As a result, the battery unit 10 to which the roller jig 220 is attached slides on the rail 130 in parallel to the X direction. A groove in which the roller ball 222 rolls may be formed on the upper surface of the rail 130 in parallel to the X direction.

[0039] The jack jig 210 and the roller jig 220 may be prepared separately or may be configured as an integral unit. When the jack jig 210 and the roller jig 220 are prepared separately, the jack jig 210 is first attached to the fitting portion 45. Then, the battery unit 10 is jacked up using the jack jig 210. After the jacking up, the roller jig 220 is attached to the fitting portion 45. After the roller jig 220 is attached, the jack jig 210 may be removed. On the other hand, in the case of an integrated jig, the integrated jig is attached to the fitting portion 45 and jacked up. In either case, the battery unit 10 to which the roller jig 220 is attached slides on the rail 130.

[0040] After the battery unit 10 is installed (stored) in the rack 100, the jig 200 may be removed or may be left as is.

[0041] <Effects> As described above, according to this embodiment, the frame 40 of the battery tray 30 of the battery unit 10 has a fitting portion 45 configured to fit with the roller jig 220. The roller jig 220 is attached to the fitting portion 45. The battery unit 10 to which the roller jig 220 is attached can be easily slid on the rail 130. That is, the "ease of movement" of the battery unit 10 is improved. Therefore, the battery unit 10 can be easily installed (housed) in the rack 100. Also, the battery unit 10 can be easily pulled out from the rack 100. That is, the ease of assembly and replacement of the battery unit 10 is significantly improved. It becomes possible to more efficiently assemble and replace the battery unit 10.

[0042] Furthermore, by using the roller jig 220, the battery unit 10 can be slid on the rail 130, eliminating the need to drag the battery unit 10 along the rail 130. This prevents the painted surface of the rail 130 from being scratched. This is preferable from the standpoint of ensuring the durability and waterproof performance of the rail 130.

[0043] As the battery pack 20 becomes larger and heavier, the effect obtained by this embodiment becomes more remarkable.

[0044] 3. Alignment Next, the techniques for assembling the battery unit 10 and aligning it when replacing it will be described.

[0045] 3-1. Aligning the rails 8 and 9 are diagrams for explaining an example of the alignment of the rail 130. When assembling or replacing the battery unit 10, the auxiliary rail 300 on the outside of the rack 100 is connected to the rail 130 on the rack 100 side. When the battery unit 10 is inserted into the rack 100, the battery unit 10 on the auxiliary rail 300 slides toward the rail 130 on the rack 100 side. Conversely, when the battery unit 10 is pulled out of the rack 100, the battery unit 10 on the rail 130 on the rack 100 side slides toward the auxiliary rail 300.

[0046] In order to smoothly slide the battery unit 10, it is important to align the rail 130 on the rack 100 side with the auxiliary rail 300 outside the rack 100. For this purpose, an alignment pin 310 is used. For example, as shown in FIG. 8, an alignment hole 131 into which the alignment pin 310 is inserted is formed at the end of the rail 130 on the rack 100 side. The rail 130 and the auxiliary rail 300 are connected so that the alignment pin 310 is inserted into the alignment hole 131. In this connected state, the top surfaces and lateral positions of the rail 130 and the auxiliary rail 300 are aligned. Conversely, the alignment hole 131 is formed so that the top surfaces and lateral positions of the rail 130 and the auxiliary rail 300 are aligned.

[0047] In this way, the alignment pin 310 allows the rail 130 and the auxiliary rail 300 to be aligned with high precision. This makes it possible to smoothly slide the battery unit 10 between the rail 130 and the auxiliary rail 300. This also contributes to making the battery unit 10 easier to assemble and replace.

[0048] 3-2. Horizontal alignment FIG. 10 is a diagram for explaining an example of alignment in the horizontal direction (Y direction). The format of FIG. 10 is the same as that of FIG. 3, FIG. 4, and FIG. 7. The cam follower 400 is attached to the lower plate 50 of the battery tray 30. For this purpose, the lower plate 50 of the battery tray 30 has a hole 51 to which the cam follower 400 is attached. The bolt of the cam follower 400 is inserted into the hole 51. The roller of the cam follower 400 contacts the side surface 132 of the rail 130 and moves parallel to the X direction along the side surface 132 of the rail 130. In other words, the hole 51 for attaching the cam follower 400 is formed in the lower plate 50 of the battery tray 30 so that the roller of the cam follower 400 contacts the side surface 132 of the rail 130.

[0049] Typically, a left cam follower 400L that contacts a side surface 132L of the left rail 130L and a right cam follower 400R that contacts a side surface 132R of the right rail 130R are provided separately. The left cam follower 400L and the right cam follower 400R move along the side surface 132L of the left rail 130L and the side surface 132R of the right rail 130R, respectively.

[0050] Such a cam follower 400 prevents the battery unit 10 from wobbling in the lateral direction. In other words, it is possible to maintain the lateral position of the battery unit 10 at a predetermined position. Therefore, it is possible to smoothly slide the battery unit 10 along the X direction. This also contributes to improving the ease of assembly and replacement of the battery unit 10.

[0051] After the battery unit 10 is installed (stored) in the rack 100, the cam follower 400 may be removed, or may be left as is.

[0052] 3-3. Depth alignment 11 is a diagram for explaining an example of alignment in the depth direction (X direction). A positioning pin 500 is installed at a predetermined position on the rail 130. The battery unit 10 that slides on the rail 130 in the X direction comes into contact with the positioning pin 500 and stops. The worker simply needs to push the battery unit 10 until it comes into contact with the positioning pin 500 and stops. This also contributes to making it easier to assemble the battery unit 10.

[0053] 4. Ensuring horizontality Fig. 12 is a diagram for explaining an example of transportation of the battery unit 10. In the example shown in Fig. 12, the battery unit 10 is transported to the vicinity of the rack 100 by a lift. Then, the battery unit 10 is lifted to a desired height by the lift and inserted into the rack 100.

[0054] More specifically, a case 600 (tower) for housing the battery unit 10 is prepared. The case 600 includes a stand 610 on which the battery unit 10 is placed. The stand 610 may include an auxiliary rail 300. The case 600 is also provided with a chain block 620 that is connected to the stand 610. Typically, the chain block 620 is provided at each of the four corners of the case 600.

[0055] The battery unit 10 is placed on a platform 610 inside the case 600. A chain block 620 is connected to the platform 610. The case 600 housing the battery unit 10 is transported to the vicinity of the rack 100 by a lift. The case 600 is then raised to a desired height by the lift. The battery unit 10 is then moved from inside the case 600 into the rack 100.

[0056] Here, depending on the inclination or condition of the ground on which the lift is located, the case 600 may tilt from the horizontal plane. Even in such a case, it is possible to keep the platform 610 on which the battery unit 10 is placed horizontal by operating the chain block 620 provided on the case 600. A worker can move the battery unit 10 into the rack 100 while keeping the platform 610 on which the battery unit 10 is placed horizontal. This also contributes to improving the ease of assembly of the battery unit 10.

[0057] It should be noted that a crane may be used instead of a lift to transport and lift the case 600.

[0058] 5. Manufacturing method (assembly method) of battery device The manufacturing method (assembly method) of the battery device 1 is outlined as follows.

[0059] The worker uses a lift to transport the case 600 housing the battery unit 10 to the vicinity of the rack 100. The worker also uses the lift to lift the case 600 to a desired height. At this time, the worker may keep the battery unit 10 horizontal by operating the chain block 620 (see Section 4).

[0060] The worker connects the auxiliary rail 300 to the rail 130 on the rack 100 side. At this time, the worker may align the rail 130 and the auxiliary rail 300 using the alignment pin 310 (see Section 3-1).

[0061] The worker attaches the jack jig 210 to the fitting portion 45 of the battery tray 30. The worker uses the jack jig 210 to jack up the battery unit 10. After jacking up, the worker attaches the roller jig 220 to the fitting portion 45. Alternatively, the jack jig 210 and the roller jig 220 may be configured as an integrated unit. The worker slides the battery unit 10 with the roller jig 220 attached onto the rails 130, and installs (stores) the battery unit 10 in the rack 100 (see Section 2).

[0062] The worker may attach the cam follower 400 to the bottom plate 50 of the battery tray 30. In this case, the worker slides the battery unit 10 to which the roller jig 220 is attached on the rail 130 so that the cam follower 400 moves along the side surface 132 of the rail 130 (see Section 3-2).

[0063] The worker pushes the battery unit 10 until it comes into contact with the positioning pin 500 and stops.

[0064] In this manner, the battery unit 10 is installed in the rack 100, and the battery device 1 is completed. [Explanation of symbols]

[0065] 1 Battery device 10 Battery unit 20 Battery Pack 30 Battery Tray 40 frames 41 1st Frame 42 2nd Frame 45 Fitting part 100 racks 110 Storage Space 130 Support member, rail 200 Jig 210 Jack jig 220 Roller jig

Claims

1. A rack having a support member; a battery unit installed on the support member of the rack; Equipped with the battery unit includes a battery tray and a battery pack mounted on the battery tray; The outer periphery of the battery tray has a fitting portion configured to fit with a roller jig for sliding the battery unit on the support member. battery device.

2. The battery device according to claim 1 , the first direction is parallel to a direction in which the battery unit slides on the support member; The second direction is a direction perpendicular to the first direction, the battery unit is installed on a plane defined by the first direction and the second direction, the outer periphery of the battery tray includes a first outer periphery parallel to the first direction, The first outer periphery has the fitting portion. battery device.

3. The battery device according to claim 2, A cross-sectional shape of the fitting portion in a plane perpendicular to the first direction is a C-shape that opens toward an outside of the battery tray in the second direction. battery device.

4. The battery device according to claim 2, The fitting portion is further configured to be fitted with a jack jig for jacking up the battery unit. battery device.

5. The battery device according to claim 4, The upper surface of the fitting portion has a through hole into which a pin for fixing the fitting portion and the jack jig is inserted. battery device.

6. The battery device according to claim 4, the outer periphery of the battery tray includes a second outer periphery parallel to the second direction, The second outer periphery has a through hole penetrating the second outer periphery in the first direction at a position corresponding to the fitting portion of the first outer periphery. battery device.

7. The battery device according to claim 2, The support member of the rack is a rail extending in the first direction, The first outer periphery of the battery tray is placed on the rail. battery device.

8. The battery device according to claim 7, The bottom plate of the battery tray has a hole to which a cam follower that moves along the side of the rail is attached. battery device.

9. A battery device according to any one of claims 1 to 8, The battery pack is an in-vehicle battery pack. battery device.

10. The battery device according to claim 9, An insulator is interposed between the battery tray and the vehicle-mounted battery pack. battery device.

11. A method for manufacturing a battery device, comprising the steps of: The battery device includes: A rack having a support member; a battery unit installed on the support member of the rack; Equipped with the battery unit includes a battery tray and a battery pack mounted on the battery tray; The outer periphery of the battery tray has a fitting portion, The battery device manufacturing method includes: attaching a roller jig to the fitting portion of the battery tray for sliding the battery unit on the support member; sliding the battery unit with the roller jig attached on the support member, and installing the battery unit in the rack; Includes Battery device manufacturing method.

12. The method of manufacturing a battery according to claim 11, attaching a jacking tool to the fitting portion for jacking up the battery unit; jacking up the battery unit using the jack jig, and then sliding the battery unit to which the roller jig is attached on the support member; Further includes Battery device manufacturing method.

13. The method of manufacturing a battery according to claim 11, the first direction is parallel to a direction in which the battery unit slides on the support member; The support member of the rack is a rail extending in the first direction, The battery manufacturing method includes: a cam follower that moves along a side surface of the rail is attached to a lower surface of the battery tray; Sliding the battery unit to which the roller jig is attached on the support member so that the cam follower moves along the side surface of the rail; Further includes Battery device manufacturing method.

14. A method for producing a battery according to any one of claims 11 to 13, comprising the steps of: placing the battery unit on a platform within a case; Connecting a chain block provided in the case to the platform; operating the chain block to move the battery unit into the rack while keeping the platform on which the battery unit is placed horizontal; Further includes Battery device manufacturing method.

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