Battery device and method for manufacturing battery device

Abstract

A battery device and a method for manufacturing the battery device, the battery device comprising: a holder having a support member; and a battery cell disposed on the support member of the bracket. The battery unit includes a battery tray and a battery pack mounted on the battery tray. The outer peripheral portion of the battery tray has a fitting portion configured so as to be fitted to a roller jig configured so as to slide the battery cell on the support member.

Description

Technical Field

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

[0002] International Publication No. 2016 / 129385 discloses a power storage device having a battery tray and a battery pack disposed on a support plate. Summary of the invention

[0003] Considering the battery device including the battery pack, as the battery pack becomes larger, its weight increases, and the assembly and replacement of the battery pack become difficult.

[0004] The present disclosure relates to a battery device including a battery pack, and provides a technology capable of improving the ease of assembling and replacing the battery pack.

[0005] A first aspect of the present disclosure relates to a battery device comprising:

[0006] A rack having a supporting member; and

[0007] The battery unit is arranged on the supporting member of the bracket.

[0008] The battery unit includes a battery tray and a battery pack mounted on the battery tray.

[0009] The battery tray has an outer peripheral portion having a fitting portion configured to fit with a roller jig configured to slide the battery cell on the support member.

[0010] A battery device manufacturing method according to a second aspect of the present disclosure is a battery device manufacturing method for manufacturing a battery device.

[0011] The battery device comprises: a bracket having a supporting member; and a battery unit, the battery unit being arranged on the supporting member of the bracket. The battery unit comprises a battery tray and a battery pack mounted on the battery tray. The outer periphery of the battery tray has a fitting portion.

[0012] The battery device manufacturing method comprises:

[0013] attaching a roller jig configured to slide the battery unit on the support member to the fitting portion of the battery tray; and

[0014] The battery cell with the roller jig attached thereto is slid on the support member to place the battery cell in the holder.

[0015] According to the present disclosure, the outer peripheral portion of the battery tray of the battery cell has an interlocking portion configured to interlock with the roller clamp. The roller clamp is installed on the interlocking portion. The battery cell with the roller clamp installed can easily slide on the supporting member. That is, the "ease of movement" of the battery cell is improved. Therefore, the battery cell can be easily set (accommodated) in the bracket. In addition, the battery cell can also be easily pulled out from the bracket. That is, the ease of assembly and replacement of the battery cell is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Features, advantages, and technical and industrial significance of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings, in which like reference numerals represent like elements, and in which:

[0017] Figure 1 It is a schematic diagram showing a configuration example of a battery device.

[0018] Figure 2 It is a diagram showing a configuration example of a battery unit.

[0019] Figure 3 It is a diagram showing a configuration example of a battery device.

[0020] Figure 4 It is a figure for demonstrating a clamp and a fitting part.

[0021] Figure 5 It is a figure for demonstrating an example of a jack clamp.

[0022] Figure 6 It is a figure for demonstrating another example of a jack clamp.

[0023] Figure 7 It is a figure for demonstrating an example of a roller clamp.

[0024] Figure 8 This is a diagram for explaining an example of positioning (position alignment) of a guide rail.

[0025] Fig. 9 It is a diagram for explaining an example of positioning of a guide rail.

[0026] Fig.10 It is a diagram for explaining an example of lateral positioning.

[0027] Fig.11 This is a diagram for explaining an example of positioning in the depth direction.

[0028] Fig.12 It is a diagram for explaining an example of conveyance of a battery cell. DETAILED DESCRIPTION

[0029] In the battery device according to the first aspect of the present disclosure, the first direction may be parallel to the direction in which the battery unit slides on the support member, and the second direction may be a direction orthogonal to the first direction. The battery unit may be arranged on a surface defined by the first direction and the second direction, and the outer peripheral portion of the battery tray may include a first outer peripheral portion parallel to the first direction, and the first outer peripheral portion may have the fitting portion.

[0030] In the battery device according to the first aspect of the present disclosure, a cross-sectional shape of the fitting portion in a plane perpendicular to the first direction may be a C-shape that opens toward the outside of the battery tray in the second direction.

[0031] In the battery device according to the first aspect of the present disclosure, the fitting portion may be further configured to fit with a jack jig configured to lift the battery unit.

[0032] In the battery device according to the first aspect of the present disclosure, the upper surface of the fitting portion may have a through hole into which a pin for fixing the fitting portion and the jack clamp is inserted.

[0033] In the battery device according to the first aspect of the present disclosure, the outer peripheral portion of the battery tray may include a second outer peripheral portion parallel to the second direction, and the second outer peripheral portion may have a through hole penetrating the second outer peripheral portion in the first direction.

[0034] In the battery device according to the first aspect of the present disclosure, the support member of the holder may be a rail extending in the first direction, and the first outer peripheral portion of the battery tray may be provided on the rail.

[0035] In the battery device according to the first aspect of the present disclosure, the lower plate of the battery tray may have a hole for mounting a cam follower that moves along a side surface of the guide rail.

[0036] In the battery device according to the first aspect of the present disclosure, the battery pack may be a battery pack configured to be mounted on a vehicle.

[0037] The battery device according to the first aspect of the present disclosure may further include an insulating member interposed between the battery tray and a battery pack configured to be mounted on the vehicle.

[0038] The battery manufacturing method involved in the second scheme of the present disclosure may also include: installing a jack clamp configured to lift the battery cell on the interlocking portion; and sliding the battery cell installed with the roller clamp on the supporting member after lifting the battery cell using the jack clamp.

[0039] In the battery manufacturing method according to the second aspect of the present disclosure, the first direction may be parallel to the direction in which the battery unit slides on the support member, and the support member of the bracket may be a guide rail extending in the first direction. The battery manufacturing method according to the second aspect of the present disclosure may further include: installing a cam follower that moves along the side of the guide rail on the lower surface of the battery tray; and sliding the battery unit with the roller fixture installed on the support member in such a manner that the cam follower moves along the side of the guide rail.

[0040] The battery manufacturing method involved in the second scheme of the present disclosure may also include: placing the battery cell on a workbench inside the shell; connecting a chain pulley arranged on the shell to the workbench; and operating the chain pulley to move the battery cell into the bracket while keeping the workbench on which the battery cell is placed horizontal.

[0041] The battery manufacturing method according to the second aspect of the present disclosure may further include: connecting an auxiliary rail to the rail of the bracket.

[0042] Embodiments of the present disclosure will be described with reference to the drawings.

[0043] 1. Overview of battery device

[0044] Figure 1 1 is a schematic diagram showing a configuration example of a battery device 1 according to the present embodiment. The battery device 1 includes at least one battery cell 10 and a holder 100 for storing the battery cell 10. The battery cell 10 is replaceable. That is, the battery cell 10 can be placed from outside the holder 100 into the holder 100, and the battery cell 10 can also be taken out from inside the holder 100 to outside the holder 100.

[0045] First, the coordinate system is described. The XY plane is the plane on which the battery cell 10 is placed in the bracket 100. The Z direction is a direction perpendicular to the XY plane. Typically, the XY plane is a horizontal plane, and the Z direction is a vertical direction. The X direction (first direction) is a depth direction. The Y direction (second direction) is a lateral direction orthogonal to the X direction. As described later, when the battery cell 10 is assembled and replaced, the battery cell 10 moves parallel to the X direction. That is, the battery cell 10 is inserted into or removed from the bracket 100 along the X direction.

[0046] The bracket 100 has a storage space 110 for storing the battery cell 10. In more detail, the bracket 100 includes a plurality of pillars 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 pillars 120. The support member 130 supports the battery cell 10. In other words, the battery cell 10 is disposed on the support member 130. Therefore, the space above the support member 130 becomes the storage space 110. The storage space 110 may also be referred to as a slot. The material of the bracket 100 is, for example, steel. The bracket 100 may also include a top plate and a window not shown.

[0047] Typically, the battery device 1 includes a plurality of battery cells 10. In this case, the bracket 100 has a plurality of storage spaces 110 (slots) for respectively storing the plurality of battery cells 10. More specifically, the plurality of storage spaces 110 are arranged in the Z direction, that is, arranged in layers. A plurality of supporting members 130 are provided in a manner corresponding to the plurality of storage spaces 110. The plurality of battery cells 10 are respectively provided on the plurality of supporting members 130. As a result, the plurality of battery cells 10 are also arranged in layers. The plurality of battery cells 10 can be electrically connected to each other. In Figure 1 In the example shown, the number of the storage spaces 110 and the battery cells 10 is 6. However, the number is not limited to 6.

[0048] As described in detail later, the battery cell 10 moves (slides) on the support member 130 in the X direction. The shape of the support member 130 is not particularly limited as long as the battery cell 10 can move (slide) in the X direction. Figure 1 In the example shown, the support member 130 is an elongated rail extending in the X direction. More specifically, the support member 130 supporting one battery cell 10 includes a pair of rails 130L and 130R. The left rail 130L is fixed to Figure 1 On the other hand, the right guide rail 130R is fixed to Figure 1 The left guide rail 130L and the right guide rail 130R are parallel and extend in the X direction. One battery unit 10 is arranged on a set of guide rails 130L and 130R.

[0049] In the following description, the support member 130 is Figure 1 For convenience, the guide rails 130L and 130R are collectively referred to as "guide rails 130". In the case of generalization, "guide rails 130" is replaced by "support member 130".

[0050] Figure 21 is a diagram showing a configuration example of a battery unit 10. The battery unit 10 includes a battery pack 20 and a battery tray 30. The battery pack 20 has a function as a storage battery. The battery tray 30 is a support device for the battery pack 20. That is, the battery pack 20 is mounted on the battery tray 30.

[0051] like Figure 2 As shown, the battery tray 30 includes a frame 40 , a lower plate 50 , and a support portion 60 .

[0052] The frame 40 may also be referred to as the "periphery" of the battery tray 30. The frame 40 includes a first frame 41 (first periphery) parallel to the X direction and a second frame 42 (second periphery) 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 material of the frame 40 is, for example, steel.

[0053] The lower plate 50 is surrounded by the frame 40 and forms a lower surface of the battery tray 30 .

[0054] The support portion 60 is a member for supporting the battery pack 20 and is provided on the frame 40. Figure 2 In the example shown, the support portion 60 is disposed on the first frame 41. The battery pack 20 is disposed on the support portion 60. For example, the support portion 60 includes a bracket 61 for fixing the battery pack 20. The support portion 60 may also include an insulating member 62 for insulating the battery pack 20 from the frame 40. The insulating member 62 is interposed between the frame 40 and the bracket 61.

[0055] The battery pack 20 is fixed to the battery tray 30 to form the battery unit 10. Such a battery unit 10 may also be referred to as a "battery subassembly."

[0056] Figure 3 1 is an XY plane view and a YZ cross-sectional view showing a state where the battery unit 10 (battery subassembly) is set on the guide rail 130 of the bracket 100. The YZ cross-sectional view shows a YZ cross section along the line III-III in the XY plane view. The first frame 41 parallel to the X direction is set on the guide rail 130 parallel to the X direction. In more detail, the left frame 41L is set on the left guide rail 130L, and the right frame 41R is set on the right guide rail 130R.

[0057] 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 also be incorporated into an energy facility. The battery device 1 may also be provided as a backup power source.

[0058] In addition, the battery pack 20 used in the battery device 1 according to the present embodiment may be a vehicle-mounted battery pack. Here, a vehicle-mounted battery pack refers to a battery pack developed and produced as a power source for electric vehicles and hybrid vehicles. Such a vehicle-mounted battery pack is "repurposed" as the battery pack 20 of the battery device 1.

[0059] For example, a vehicle-mounted battery pack used in a vehicle is reused as the battery pack 20 of the battery device 1. The output and performance of a vehicle-mounted battery pack are originally very high, so even a used vehicle-mounted battery pack can be sufficiently used for purposes other than vehicles. It can be expected that the number of vehicle-mounted battery packs produced and used will continue to increase in the future. "Reusing such abundant vehicle-mounted battery packs as the battery pack 20 of the battery device 1" is not only preferred from the perspective of the environment, but also from the perspective of energy security.

[0060] As another example, a new vehicle-mounted battery pack can also be used as the battery pack 20 of the battery device 1 from the beginning. The production quantity of vehicle-mounted battery packs is very large, so their production cost is low. In other words, vehicle-mounted battery packs are excellent in terms of quantity and cost. "Switching to such abundant and low-cost vehicle-mounted battery packs" is preferred from the perspective of energy security.

[0061] In addition, when the vehicle-mounted battery pack is used as the battery pack 20 of the battery device 1, it is preferable to insulate the vehicle-mounted battery pack from the frame 40 from the viewpoint of pressure resistance design. For this reason, it is preferable to provide an insulating member 62 (see Figure 2 ).

[0062] 2. Improved mobility of battery cells

[0063] like Figure 3 As shown, the battery cells 10 including the battery pack 20 are arranged on the guide rails 130. When the battery cells 10 are assembled and replaced, the battery cells 10 move (slide) along the X direction on the guide rails 130. As the battery pack 20 increases in size and weight, it becomes difficult to move the battery cells 10 including the battery pack 20, and assembly and replacement become difficult.

[0064] Therefore, the present embodiment proposes a technique that can improve the ease of assembly and replacement of the battery unit 10. First, the technology used to improve the “ease of movement” of the battery unit 10 will be described.

[0065] According to the present embodiment, when assembling and replacing the battery cell 10, a jig 200 for improving the ease of movement of the battery cell 10 is installed on the battery cell 10. The jig 200 for improving the ease of movement of the battery cell 10 includes a jack jig 210 and a roller jig 220. The jack jig 210 is a jig for lifting the battery cell 10. The roller jig 220 is a jig for sliding the battery cell 10 on the guide rail 130. Before describing specific examples of the jack jig 210 and the roller jig 220, the structure of the battery cell 10 side for installing the jig 200 is described.

[0066] According to the present embodiment, the frame 40 (peripheral portion) of the battery tray 30 of the battery unit 10 has a "fitting portion 45" configured to fit with the clamp 200. For example, the first frame 41 (first peripheral portion) parallel to the X direction has the fitting portion 45. Figure 3 In the example shown, 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. Figure 3 The cross-sectional shape of the fitting portion 45L of the left frame 41L is a C-shaped shape that opens toward the left. On the other hand, the cross-sectional shape of the fitting portion 45R of the right frame 41R is a C-shaped shape that opens toward the right.

[0067] Figure 4 1 and 2 are an XY plan view and a YZ cross-sectional view showing a state in which the jig 200 is attached to the fitting portion 45 of the first frame 41 . Figure 4 The form and Figure 3 The YZ cross-sectional view shows the YZ cross-sectional view along the line IV-IV in the XY plane. Figure 4 As shown in FIG. 1 , a portion of the clamp 200 is inserted into the fitting portion 45, whereby the clamp 200 is fitted into the fitting portion 45 (first frame 41). Figure 4 In the example shown, the clamp 200 is placed on the rail 130 between the rail 130 and the frame 40 .

[0068] Figure 5 This is a diagram for illustrating an example of a jack clamp 210 for lifting a battery cell 10. The jack clamp 210 includes a first member 211 and a second member 212. The first member 211 and the second member 212 are in contact at a contact surface 213. The contact surface 213 is an inclined surface. In more detail, the contact surface 213 is an inclined surface inclined upward when viewed from the first member 211, and is an inclined surface inclined downward when viewed from the second member 212. The lower surface of the first member 211 is in contact with the guide rail 130. A portion of the second member 212 is inserted into the interlocking portion 45 of the first frame 41, whereby the jack clamp 210 is mounted on the interlocking portion 45.

[0069] In order to prevent the jack clamp 210 from falling off the fitting portion 45, the jack clamp 210 and the fitting portion 45 may be fixed by using a pin 214. In this case, Figure 5 As shown, a through hole 44 for inserting a pin 214 is provided 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 (second member 212) and the fitting portion 45.

[0070] In addition, a bolt 215 (for example, a hexagonal bolt) passes through the first member 211 in the horizontal direction to connect the first member 211 and the second member 212. Figure 5 In the example shown, the bolt 215 passes through the first member 211 in the Y direction. By turning the bolt 215 with a wrench (e.g., a hexagonal wrench), the bolt 215 can be tightened or loosened. When the bolt 215 is tightened, the force in the horizontal direction is converted into a force in the Z direction via the contact surface 213 (inclined surface), whereby the second member 212 is pushed up. By the second member 212 being pushed up in the Z direction, the first frame 41, i.e., the battery cell 10, is lifted. In other words, the battery cell 10 can be easily lifted (raised) simply by turning the bolt 215 with a wrench.

[0071] Figure 6 2 is a diagram for explaining another example of the jack fixture 210. Figure 6 In the example shown, the first member 211 and the second member 212 are arranged in the same manner as Figure 5 The bolt 215 penetrates the first member 211 in the X direction. The second frame 42 has a through hole 43 that penetrates the second frame 42 in the X direction. The position of the through hole 43 is a position corresponding to the fitting portion 45 of the first frame 41. In particular, the position of the through hole 43 is a position corresponding to the bolt 215 of the jack clamp 210 mounted on 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 clamp 210. Then, by turning the bolt 215 with the wrench, the battery unit 10 is lifted. Figure 6 The structure shown is particularly suitable when the space beside the battery device 1 is narrow. Even when the space beside the battery device 1 is narrow, the jack jig 210 can be easily operated by inserting a wrench from the front or rear.

[0072] Figure 7 It is an XY plan view and a YZ cross-sectional view for explaining an example of the roller jig 220 for sliding the battery cell 10 on the guide rail 130 . Figure 7 The form of Figure 3 , Figure 4The YZ cross-sectional view shows the YZ cross-sectional view along the line VII-VII in the XY plane. Figure 7 As shown, a part of the roller jig 220 is inserted into the fitting portion 45, whereby the roller jig 220 is mounted on the fitting portion 45. In addition, the portion of the roller jig 220 that is not inserted into the fitting portion 45 has a ball 222 that contacts the guide rail 130. The ball 222 rolls on the guide rail 130. Thus, the battery cell 10 to which the roller jig 220 is mounted slides on the guide rail 130 in parallel with the X direction. A groove for the ball 222 to roll may be formed on the upper surface of the guide rail 130 in parallel with the X direction.

[0073] In addition, the jack clamp 210 and the roller clamp 220 can be prepared separately or can be constructed as one. In the case where the jack clamp 210 and the roller clamp 220 are prepared separately, first, the jack clamp 210 is installed in the interlocking portion 45. Then, the battery cell 10 is lifted using the jack clamp 210. After lifting, the roller clamp 220 is installed in the interlocking portion 45. After the roller clamp 220 is installed, the jack clamp 210 can be removed. On the other hand, in the case of an integrated clamp, the integrated clamp is installed in the interlocking portion 45 and lifted. In either case, the battery cell 10 with the roller clamp 220 installed slides on the guide rail 130.

[0074] After the battery unit 10 is set (stored) in the holder 100 , the clamp 200 may be removed or may be left as it is.

[0075] <Effect>

[0076] As described above, according to the present embodiment, the frame 40 of the battery tray 30 of the battery cell 10 has a fitting portion 45 configured to fit with the roller clamp 220. The roller clamp 220 is mounted on the fitting portion 45. The battery cell 10 mounted with the roller clamp 220 can slide easily on the guide rail 130. That is, the "ease of movement" of the battery cell 10 is improved. Therefore, the battery cell 10 can be easily set (accommodated) in the bracket 100. In addition, the battery cell 10 can also be easily pulled out from the bracket 100. That is, the ease of assembly and replacement of the battery cell 10 is significantly improved. The battery cell 10 can be assembled and replaced more efficiently.

[0077] In addition, the battery cell 10 can be slid on the guide rail 130 by using the roller jig 220, so it is not necessary to pull the battery cell 10 on the guide rail 130. Therefore, it is possible to suppress damage to the painted surface of the guide rail 130. This is preferable from the viewpoint of ensuring the durability and waterproof performance of the guide rail 130.

[0078] As the battery pack 20 increases in size and weight, the effects obtained by this embodiment become more significant.

[0079] 3. Counterpoint

[0080] Next, operations related to positioning (position alignment) during assembly and replacement of the battery unit 10 will be described.

[0081] 3-1. Alignment of guide rails

[0082] Figure 8 as well as Fig. 9 1 is a diagram for explaining an example of positioning of the guide rail 130. When assembling and replacing the battery cell 10, the auxiliary guide rail 300 outside the holder 100 is connected to the guide rail 130 on the holder 100 side. When the battery cell 10 is inserted into the holder 100, the battery cell 10 on the auxiliary guide rail 300 slides in the direction of the guide rail 130 on the holder 100 side. Conversely, when the battery cell 10 is pulled out of the holder 100, the battery cell 10 on the guide rail 130 on the holder 100 side slides in the direction of the auxiliary guide rail 300.

[0083] In order to make the battery unit 10 slide smoothly, it is important to align the guide rail 130 on the side of the bracket 100 with the auxiliary guide rail 300 outside the bracket 100. For this purpose, the alignment pin 310 is used. Figure 8 As shown, an alignment hole 131 for inserting an alignment pin 310 is formed at the end of the guide rail 130 on the bracket 100 side. The guide rail 130 is connected to the auxiliary guide rail 300 in such a manner that the alignment pin 310 is inserted into the alignment hole 131. In this connected state, the upper surface and lateral position of the guide rail 130 and the auxiliary guide rail 300 are consistent. In other words, the alignment hole 131 is formed in such a manner that the upper surface and lateral position of the guide rail 130 and the auxiliary guide rail 300 are consistent.

[0084] In this way, the guide rail 130 and the auxiliary guide rail 300 are aligned with high precision by the alignment pins 310. Therefore, the battery unit 10 can be smoothly slid between the guide rail 130 and the auxiliary guide rail 300. This also contributes to the improvement of the ease of assembly and replacement of the battery unit 10.

[0085] 3-2. Horizontal alignment

[0086] Fig.10 It is an XY plan view and a YZ cross-sectional view for explaining an example of positioning in the lateral direction (Y direction). Fig.10 The form of Figure 3 , Figure 4 , Figure 7is the same. The YZ cross-sectional view shows the YZ cross-sectional view along the line XX in the XY plane. The cam follower 400 is installed on the lower plate 50 of the battery tray 30. To this end, the lower plate 50 of the battery tray 30 has a hole 51 for installing the cam follower 400. The bolt of the cam follower 400 is inserted into the hole 51. The roller of the cam follower 400 contacts the side 132 of the guide rail 130 and moves parallel to the X direction along the side 132 of the guide rail 130. Conversely, the hole 51 for installing the cam follower 400 is formed in the lower plate 50 of the battery tray 30 in such a way that the roller of the cam follower 400 contacts the side 132 of the guide rail 130.

[0087] Typically, a left cam follower 400L in contact with the side surface 132L of the left guide rail 130L and a right cam follower 400R in contact with the side surface 132R of the right guide 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 guide rail 130L and the side surface 132R of the right guide rail 130R, respectively.

[0088] By using such a cam follower 400, the battery cell 10 can be prevented from deviating in the lateral direction. In other words, the lateral position of the battery cell 10 can be maintained at a predetermined position. Therefore, the battery cell 10 can slide smoothly along the X direction. This also helps to improve the ease of assembly and replacement of the battery cell 10.

[0089] Furthermore, after the battery unit 10 is set (housed) in the holder 100 , the cam follower 400 may be removed or may be left as it is.

[0090] 3-3. Alignment in the depth direction

[0091] Fig.11 This is a diagram for explaining an example of alignment in the depth direction (X direction). A positioning pin 500 is provided at a predetermined position on the guide rail 130. The battery cell 10 sliding along the X direction on the guide rail 130 contacts the positioning pin 500 and stops. The operator only needs to push the battery cell 10 until the battery cell 10 contacts the positioning pin 500 and stops. This also helps to improve the ease of assembly of the battery cell 10.

[0092] 4. Ensure horizontality

[0093] Fig.12 1 is a diagram for explaining an example of conveying the battery cell 10. Fig.12 In the example shown, the battery unit 10 is transported by a lifter to the vicinity of the rack 100 . Then, the battery unit 10 is lifted by the lifter to a desired height and inserted into the rack 100 .

[0094] In more detail, a housing 600 (storage box) is prepared for accommodating the battery cell 10. The housing 600 includes a workbench 610 on which the battery cell 10 is placed. The workbench 610 may include an auxiliary guide rail 300. In addition, a chain pulley 620 connected to the workbench 610 is provided in the housing 600. Typically, the chain pulley 620 is provided at the four corners of the housing 600.

[0095] The battery cell 10 is placed on a workbench 610 in the housing 600. In addition, a chain pulley 620 is connected to the workbench 610. The housing 600 containing the battery cell 10 is transported to the vicinity of the rack 100 by the elevator. Furthermore, the housing 600 is lifted to a desired height by the elevator. Then, the battery cell 10 is moved from the housing 600 to the rack 100.

[0096] Here, depending on the inclination and state of the ground where the lift is located, the housing 600 may be inclined relative to the horizontal plane. Even in such a case, the workbench 610 on which the battery cell 10 is placed can be kept horizontal by operating the chain pulley 620 provided on the housing 600. The operator can move the battery cell 10 into the rack 100 while keeping the workbench 610 on which the battery cell 10 is placed horizontal. This also helps to improve the ease of assembling the battery cell 10.

[0097] In addition, a crane may be used instead of a lift to transport and lift the housing 600 .

[0098] 5. Manufacturing method (assembly method) of battery device

[0099] The outline of the manufacturing method (assembling method) of the battery device 1 is as follows.

[0100] The operator uses a lift to carry the housing 600 containing the battery cell 10 to the vicinity of the bracket 100. In addition, the operator uses the lift to lift the housing 600 to a desired height. At this time, the operator can keep the battery cell 10 horizontal by operating the chain pulley 620 (see subsection 4).

[0101] The operator connects the auxiliary guide rail 300 to the guide rail 130 on the side of the bracket 100. At this time, the operator can align the guide rail 130 and the auxiliary guide rail 300 using the alignment pins 310 (refer to Section 3-1).

[0102] The operator installs the jack clamp 210 on the interlocking portion 45 of the battery tray 30. The operator lifts the battery cell 10 using the jack clamp 210. After lifting, the operator installs the roller clamp 220 on the interlocking portion 45. Alternatively, the jack clamp 210 and the roller clamp 220 may be integrally formed. The operator slides the battery cell 10 with the roller clamp 220 installed on the guide rail 130, and sets (stores) the battery cell 10 in the bracket 100 (refer to subsection 2).

[0103] The operator may install the cam follower 400 on the lower plate 50 of the battery tray 30. In this case, the operator slides the battery unit 10 to which the roller clamp 220 is mounted on the guide rail 130 so that the cam follower 400 moves along the side surface 132 of the guide rail 130 (see subsection 3-2).

[0104] The operator pushes the battery cell 10 until the battery cell 10 comes into contact with the positioning pin 500 and stops.

[0105] In this way, the battery unit 10 is placed in the holder 100 , and the battery device 1 is completed.

Claims

1. A battery device, It is characterized in that include: A bracket having a supporting member; and a battery unit disposed on the support member of the bracket, The battery unit includes a battery tray and a battery pack mounted on the battery tray. The battery tray has an engagement portion on an outer peripheral portion configured to engage with a roller jig configured to slide the battery unit on the support member.

2. The battery device according to claim 1, It is characterized in that The first direction is parallel to the direction in which the battery unit slides on the support member; The second direction is a direction orthogonal to the first direction; The battery unit is provided on a surface 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 peripheral portion has the fitting portion.

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

4. The battery device according to claim 2, It is characterized in that The fitting portion is further configured to fit with a jack fixture, and the jack fixture is configured to lift the battery unit.

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

6. The battery device according to claim 4, It is characterized in that The outer periphery of the battery tray includes a second outer periphery parallel to the second direction; and, The second outer peripheral portion has a through hole that penetrates the second outer peripheral portion in the first direction.

7. The battery device according to claim 2, It is characterized in that The support member of the bracket is a guide rail extending in the first direction; and The first outer peripheral portion of the battery tray is disposed on the guide rail.

8. The battery device according to claim 7, It is characterized in that The lower plate of the battery tray has a hole for mounting a cam follower that moves along the side of the guide rail.

9. The battery device according to any one of claims 1 to 8, It is characterized in that The battery pack is configured to be mounted on a vehicle.

10. The battery device according to claim 9, It is characterized in that The battery device further includes an insulating member interposed between the battery tray and the battery pack configured to be mounted on the vehicle.

11. A method for manufacturing a battery device, comprising: manufacturing a battery device, The battery device includes a rack having a supporting member and a battery cell disposed on the supporting member of the rack. The battery unit includes a battery tray and a battery pack mounted on the battery tray, wherein the outer periphery of the battery tray has a fitting portion. The battery device manufacturing method is characterized in that: include: attaching a roller jig configured to slide the battery unit on the support member to the fitting portion of the battery tray; and The battery unit to which the roller jig is attached is slid on the support member to place the battery unit in the holder.

12. The method for manufacturing a battery device according to claim 11, It is characterized in that Also includes: installing a jack fixture configured to lift the battery unit on the fitting portion; and After the battery unit is lifted using the jack jig, the battery unit with the roller jig mounted thereon is slid on the support member.

13. The method for manufacturing a battery device according to claim 11, The first direction is parallel to the direction in which the battery unit slides on the support member, The support member of the bracket is a guide rail extending in the first direction, The battery device manufacturing method is characterized in that: include: Mounting a cam follower that moves along the side of the guide rail on the lower surface of the battery tray; and The battery unit to which the roller clamp is mounted is slid on the support member in such a manner that the cam follower moves along the side surface of the guide rail.

14. The method for manufacturing a battery device according to any one of claims 11 to 13, It is characterized in that Also includes: placing the battery unit on a workbench in the housing; Connecting a chain pulley disposed on the housing to the workbench; as well as The chain pulley is operated to move the battery cell into the rack while keeping the table on which the battery cell is placed horizontal.

15. The method for manufacturing a battery device according to claim 11 or 12, It is characterized in that Also includes: Connect the auxiliary rail to the rail of the bracket.

16. The method for manufacturing a battery device according to claim 13, It is characterized in that Also includes: Connect an auxiliary rail to the rail of the bracket.

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