Battery assembly structure

Abstract

To provide a battery assembly structure which can easily perform a connection operation for electrically connecting a bus bar and a terminal to each other.SOLUTION: The battery assembly structure includes: a battery case having a housing part for accommodating a battery pack; a battery cover having a wall part for covering the housing part and having an opening formed so as to penetrate the wall part; a connector disposed on the outer-surface side of the wall part; and a bus bar disposed on the inner-surface side of the wall part and for electrically connecting the connector and a terminal disposed in the battery pack, the opening being arranged at the position where the bus bar and the terminal are visible through the opening from the outer-surface side of the wall part when the battery cover is assembled to the battery case so that the housing part is covered by the wall part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a battery assembly structure. [Background technology]

[0002] 2. Description of the Related Art Vehicles such as electric vehicles and hybrid vehicles are equipped with an electric motor as a drive source and a battery as a power source for driving the electric motor.

[0003] The battery assembly structure includes, for example, a battery case, a battery cover, a connector, and a bus bar. The battery case has a storage section that stores a battery pack. The battery pack has multiple battery modules. The storage section is open to the front side. The battery cover has a wall. After the battery pack is stored in the storage section, the battery cover is assembled to the battery case so that the wall covers the storage section from the front side. A battery connector is disposed on the outer surface of the wall. A bus bar extends along the inner surface of the wall and is electrically connected to the battery connector. Terminals are disposed on the battery pack. The bus bar is electrically connected to and fixed to the terminals. Furthermore, a power harness extending from the battery module is electrically connected to and fixed to the terminals. As described above, the battery connector is electrically connected to the battery module via the bus bar, the terminals, and the power harness. The battery connector is electrically connected to a vehicle-side connector. The vehicle-side connector is electrically connected to the electric motor side via the power harness.

[0004] For example, Patent Document 1 describes a battery pack comprising a lower battery module in which multiple battery cells are stacked, an upper battery module in which multiple battery cells are stacked, a plate portion located between the upper battery module and the lower battery module, a first conductive portion electrically connected to the lower battery module, a second conductive portion electrically connected to the upper battery module, and a connecting portion electrically connecting the first conductive portion and the second conductive portion, wherein the plate portion has an opening that penetrates in the vertical direction, and when viewed from above, the connecting portion is located inside the opening. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2021-044228 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the above-described battery assembly structure, since the battery cover is attached to the battery case so that the wall covers the front side of the storage compartment, a worker cannot visually confirm the relative positional relationship between the bus bar extending along the inner surface of the wall and the terminals arranged on the battery pack, which makes it difficult to perform the connection work (wiring work) to electrically connect the bus bar and the terminals. Furthermore, if the wiring work is performed without sufficient conditions for the wiring work being met, the bus bar and the terminals may interfere with each other and cause damage to each other.

[0007] Furthermore, in the battery pack described in Patent Document 1, the opening penetrates in the vertical direction, making it difficult to visually confirm through the opening the relative positional relationship between the bus bar extending along the inner surface of the wall and the terminals arranged on the battery pack. This does not provide sufficient conditions for performing wiring work, and the connection work of electrically connecting the bus bar and the terminals cannot be easily performed.

[0008] An object of the present disclosure is to provide a battery assembly structure that allows easy connection work for electrically connecting bus bars and terminals. [Means for solving the problem]

[0009] In order to achieve the above object, the battery assembly structure in the present disclosure comprises: a battery case having a housing portion for housing the battery pack; a battery cover having a wall portion covering the storage portion and an opening portion penetrating the wall portion; a connector disposed on the outer surface side of the wall portion; a bus bar disposed on the inner surface side of the wall portion for electrically connecting the connector and a terminal disposed on the battery pack; Equipped with The opening is positioned in a position where, when the battery cover is assembled to the battery case so that the wall portion covers the storage portion, the bus bar and the terminal can be seen through the opening from the outer surface side of the wall portion. [Effects of the Invention]

[0010] According to the present disclosure, the connection work of electrically connecting the bus bar and the terminal can be easily performed. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a front view of a battery assembly structure according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is an exploded perspective view of the assembled structure of the battery according to the embodiment of the present disclosure. [Figure 3] FIG. 3 is an exploded perspective view of the assembled structure of the battery according to the embodiment of the present disclosure. [Figure 4] FIG. 4 is a diagram showing bus bars and terminals visible through openings in the embodiment of the present disclosure. [Figure 5]FIG. 5 is a diagram showing bus bars, terminals, and fasteners visible through openings in an embodiment of the present disclosure. [Figure 6] FIG. 6 is a perspective view illustrating a bus bar, a terminal, and a fastener according to the embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. A vehicle in the embodiments of the present disclosure is a commercial electric vehicle equipped with a frame structure, an electric motor, and a drive battery, and used for delivering packages, etc. However, the present disclosure is not limited to commercial electric vehicles and may also be applied to general electric vehicles. The drive battery is a battery for supplying power to the electric motor.

[0013] FIG. 1 is a front view of a battery assembly structure according to an embodiment of the present disclosure. FIG. 2 is an exploded perspective view of the battery assembly structure according to an embodiment of the present disclosure. FIG. 3 is an exploded perspective view of the battery assembly structure according to an embodiment of the present disclosure. FIG. 1 depicts a BL axis, a TL axis, and a WL axis. In the following description, the depth direction in FIG. 1 is referred to as the BL direction, the depth direction is referred to as the back side or "+BL direction," and the front direction is referred to as the front side or "-BL direction." In FIG. 1, the left-right direction is referred to as the width direction or TL direction, the right direction is referred to as one width direction side or "+TL direction," and the left direction is referred to as the other width direction side or "-TL direction." In addition, in FIG. 1, the up-down direction is referred to as the height direction or WL direction, the up direction is referred to as the upper side or "+WL direction," and the down direction is referred to as the lower side or "-WL direction." The back side (+BL direction) and the front side (-BL direction) correspond to the "horizontal direction" in this disclosure.

[0014] As shown in Figures 1, 2, and 3, a battery assembly structure 100 according to an embodiment of the present disclosure includes a battery case 30, a battery cover 40, a battery connector 50, and bus bars 60A and 60B. Figure 1 shows a battery pack 2 and terminals 3A, 3B, etc. arranged on the front side of the battery pack 2 by partially see-through the front side (-BL direction) of the battery cover 40. Figure 2 shows the battery case 30, the battery cover 40, and the terminals 3A, 3B, etc. as viewed obliquely from the front side. Figure 3 shows the battery case 30 and the battery cover 40 as viewed obliquely from the rear side. The battery connector 50 corresponds to the "connector" of the present disclosure.

[0015] The battery pack 2 has multiple battery modules (not shown), power harnesses HNA and HNB, a battery management unit (not shown), and a junction box (not shown). The battery modules have multiple battery cells. The battery management unit performs thermal management and charge / discharge management of the batteries. The power harness HNA is connected to either the positive electrode (plus pole) or negative electrode (minus pole) of the battery modules via the junction box. The power harness HNB is connected to the other electrode of the battery modules via the junction box.

[0016] Terminals 3A and 3B are arranged on the front side of the battery pack 2. For example, each of the terminals 3A and 3B has a rod shape and is a screw terminal with a screw portion screwed into the outer periphery of the rod shape. Terminal 3A is fixed to the battery pack 2 via a terminal block 4A. Terminal 3B is fixed to the battery pack 2 via a terminal block 4B.

[0017] The terminal 3A protrudes from the front side (-BL direction) of the battery pack 2. The terminal 3A is electrically connected to the battery module via a power harness HNA. A bus bar 60A (described later) is electrically connected to the terminal 3A.

[0018] The terminal 3B protrudes from the front side (-BL direction) of the battery pack 2. The terminal 3B is electrically connected to the battery module via a power harness HNB. A bus bar 60B (described later) is electrically connected to the terminal 3B.

[0019] (battery case 30) The battery case 30 has a housing portion 32 for housing the battery pack 2 .

[0020] The battery case 30 has a bottom wall 34 on which the battery pack 2 is placed, and two side walls 36. One of the two side walls 36 is a side wall 36A that stands upward (in the +WL direction) from one widthwise end of the bottom wall 34. The other of the two side walls 36 is a side wall 36B that stands upward (in the +WL direction) from the other widthwise end of the bottom wall 34. The battery case 30 does not have any walls on the front side (-BL direction), rear side (+BL direction), or upper side (+WL) other than the bottom wall 34 and the two side walls 36. As a result, the storage compartment 32 is open in the front, rear, and upper directions.

[0021] (Battery cover 40) The battery cover 40 has a rear sidewall 42, a front sidewall 44, and an upper sidewall 46. When the battery cover 40 is attached to the battery case 30, the storage section 32 (battery pack 2) is covered from the front side, rear side, and upper side. In the following description, the storage section 32 side of each of the rear sidewall 42, front sidewall 44, and upper sidewall 46 will be referred to as the "inner side," and the side opposite the inner side will be referred to as the "outer side."

[0022] Specifically, when the battery cover 40 is attached to the battery case 30, the rear side wall 42 serves as a wall that covers the storage section 32 from the rear side (+BL direction). As a result, the rear side (+BL direction) of the battery pack 2 cannot be seen from the outer surface of the rear side wall 42. Furthermore, the front side wall 44 serves as a wall that covers the storage section 32 from the front side (-BL direction). As a result, the front side (-BL direction) of the battery pack 2 and the terminals 3A, 3B arranged on the front side of the battery pack 2 cannot be seen from the outer surface of the front side wall 44. Furthermore, the upper side wall 46 serves as a wall that covers the storage section 32 from the upper side (+WL direction). As a result, the upper side (+WL direction) of the battery pack 2 cannot be seen from the outer surface of the upper side wall 46.

[0023] A front panel 44a is disposed in the center of the front sidewall 44. A substantially rectangular opening 45 is disposed in the front panel 44a, penetrating from the rear side (+BL direction) to the front side (-BL direction). Opening 45 (see FIG. 4) is disposed at a position where one end (the end connected to terminal 3A) of busbar 60A (described later) is disposed, and where one end (the end connected to terminal 3B) of busbar 60B (described later) is disposed.

[0024] (Battery connector 50) The battery connector 50 is disposed on the front panel 44a. The battery connector 50 is a connector for connecting conductors. The battery connector 50 is disposed above (in the +WL direction) the opening 45. The battery connector 50 is electrically connected to a vehicle-side connector. The vehicle-side connector is electrically connected to the electric motor side via a power harness (not shown).

[0025] (Busbars 60A and 60B) Conductive bus bars 60A and 60B are arranged along the inner surface of the front panel 44a. The bus bar 60A extends from the battery connector 50 side to the terminal 3A side, electrically connecting the battery connector 50 and the terminal 3A. As a result, the battery connector 50 is connected to the battery module via the bus bar 60A, the terminal 3A, and the power harness HNA. One end of the bus bar 60A (the end connected to the terminal 3A) has a fitting portion 62A. The fitting portion 62A is a recessed groove that is recessed upward (in the +WL direction) into the edge of the bus bar 60A. The shape of the recessed groove (e.g., groove width and groove depth) is set according to the size of the terminal 3A (e.g., the outer diameter of the rod shape). The fitting portion 62A fits into the terminal 3A from above. The recessed groove corresponds to the "recess" in this disclosure.

[0026] The bus bar 60B extends from the battery connector 50 side to the terminal 3B side, electrically connecting the battery connector 50 and the terminal 3B. Thus, the battery connector 50 is connected to the battery module via the bus bar 60B, the terminal 3B, and the power harness HNB. One end of the bus bar 60B (the end connected to the terminal 3B) has a fitting portion 62B. The fitting portion 62B is a recessed groove formed by recessing the edge of the bus bar 60B upward (in the +WL direction). The recessed groove of the bus bar 60B is configured similarly to the recessed groove of the bus bar 60A. That is, the shape of the recessed groove (e.g., groove width and groove depth) is set according to the size of the terminal 3B (e.g., the outer diameter of the rod shape). The fitting portion 62B fits into the terminal 3A from above. The recessed groove corresponds to the "recess" in this disclosure.

[0027] (Position where opening 45 is located) Next, the position where opening 45 is arranged will be described with reference to Figures 4, 5, and 6. Figure 4 is a diagram showing busbars and terminals visible through the opening in the embodiment of the present disclosure. Figure 5 is a diagram showing busbars, terminals, and fasteners visible through the opening in the embodiment of the present disclosure. Figure 6 is a perspective view showing busbars, terminals, and fasteners in the embodiment of the present disclosure.

[0028] 4, 5, and 6, when the battery cover 40 is attached to the battery case 30 so that the front sidewall 44 (front panel 44a) covers the housing 32 from the front side (-BL direction), the opening 45 is positioned so that the terminals 3A and 3B can be seen through the opening 45 from the outer surface of the front sidewall 44. As described above, the opening 45 is positioned so that one end of the bus bar 60A (the end connected to the terminal 3A) is disposed, and the opening 45 is positioned so that one end of the bus bar 60B (the end connected to the terminal 3B) is disposed. This allows the worker to see the bus bar 60A and the terminal 3A, and also the bus bar 60B and the terminal 3B, through the opening 45 when attaching the battery cover 40 to the battery case 30. In other words, opening 45 is positioned so that bus bars 60A, 60B and terminals 3A, 3B can be accommodated therein, and is sized so that bus bars 60A, 60B and terminals 3A, 3B can be accommodated therein.

[0029] (Battery assembly work) Next, the assembly work of the battery in this embodiment will be described. The assembly work of the battery includes a wiring work for electrically connecting terminal 3A and bus bar 60B and electrically connecting terminal 3B and bus bar 60B. In addition, in the assembly work of the battery, if opening 45 is closed by a lid (not shown), the lid is removed from opening 45 so that opening 45 is open (see FIG. 2).

[0030] First, the battery pack 2 is accommodated in the accommodation portion 32. The battery pack 2 is accommodated in the accommodation portion 32 from the upper side (+WL direction) of the accommodation portion 32.

[0031] Next, the battery cover 40 is attached to the battery case 30 so that the front side wall portion 44 (front panel 44a) covers the accommodation portion 32 (battery pack 2) from the front side (-BL direction).

[0032] When the battery cover 40 is attached to the battery case 30, the rear sidewall 42 covers the storage compartment 32 (battery pack 2) from the rear side (+BL direction). The upper sidewall 46 covers the storage compartment 32 (battery pack 2) from the upper side (+WL direction). When the battery cover 40 is attached to the battery case 30, the opening 45 faces the bus bars 60A, 60B, and the terminals 3A, 3B in the depth direction (BL direction). In other words, a worker can visually check the bus bars 60A, 60B, and the terminals 3A, 3B from the outer surface of the front sidewall 44 through the opening 45.

[0033] When the battery cover 40 is assembled to the battery case 30, the fitting portion 62A of the bus bar 60A may be fitted to the terminal 3A at the same time, and the fitting portion 62B of the bus bar 60B may be fitted to the terminal 3B at the same time (see FIG. 4). In the battery assembly work of this embodiment, the fitting portion 62A is not fitted to the terminal 3A at the same time, but the fitting portion 62A is located near the terminal 3A. Furthermore, the fitting portion 62B is not fitted to the terminal 3B at the same time, but the fitting portion 62B is located near the terminal 3B. This makes it possible for the worker to clearly understand the correspondence (connection) between the fitting portion 62A and the terminal 3A, and the correspondence (connection) between the fitting portion 62B and the terminal 3B.

[0034] Next, terminal 3A and bus bar 60A are electrically connected while being visually observed from the outer surface side of front sidewall 44 through opening 45. Specifically, fitting portion 62A is fitted onto terminal 3A from above (+WL direction) (see FIG. 4), and terminal 3A and bus bar 60A are fastened together with a nut threaded onto the threaded portion. Furthermore, terminal 3B and bus bar 60B are electrically connected while being visually observed from the outer surface side of front sidewall 44 through opening 45. Specifically, fitting portion 62B is fitted onto terminal 3B from above (+WL direction) (see FIG. 4), and terminal 3B and bus bar 60B are fastened together with a fastener (nut) threaded onto the threaded portion (see FIGS. 5 and 6).

[0035] Next, the opening 45 is closed with a lid (not shown). This completes the assembly of the battery in this embodiment, electrically connecting terminal 3A and bus bar 60B, and also completing the wiring work of electrically connecting terminal 3B and bus bar 60B.

[0036] The battery assembly structure in the above embodiment includes a battery case 30 having a storage section 32 that stores the battery pack 2, a battery cover 40 having a front side wall 44 that covers the storage section 32 from the front side and in which an opening 45 is formed in the front side wall 44 that penetrates from the front side (-BL direction) to the back side (+BL direction), and bus bars 60A, 60B that are positioned on the inner side of the front side wall 44 and in a position that can be seen through the opening 45 from the outer surface of the front side wall 44, and the opening 45 is positioned so that the bus bars 60A, 60B and the terminals 3A, 3B can be seen through the opening 45 from the outer surface of the front side wall 44 when the battery cover 40 is assembled to the battery case 30 so that the storage section 32 is covered from the front side by the front side wall 44.

[0037] With the above configuration, when the battery cover 40 is assembled to the battery case 30, the worker can see the bus bar 60A and the terminal 3A through the opening 45, and can also see the bus bar 60B and the terminal 3B. This means that the wiring work can be performed under conditions that are sufficient for electrically connecting the bus bar 60A and the terminal 3A, and electrically connecting the bus bar 60B and the terminal 3B. This means that the wiring work can be performed easily without mutual interference or damage between the bus bar and the terminal.

[0038] Furthermore, in the battery assembly structure in the above embodiment, terminals 3A and 3B are provided so as to protrude from the front side (-BL direction) of battery pack 2. This allows a worker to face terminals 3A and 3B directly through opening 45, making it easier to perform the connection work (wiring work) of electrically connecting bus bar 60A and terminal 3A, and the connection work (wiring work) of electrically connecting bus bar 60B and terminal 3B.

[0039] In the battery assembly structure in the above embodiment, bus bars 60A, 60B have recessed grooves recessed upward (+WL direction) so that terminals 3A, 3B can be fitted onto them from above. This makes it possible for the mating portion 62A of the bus bar 60A to simultaneously engage with the terminal 3A and the mating portion 62B of the bus bar 60B to simultaneously engage with the terminal 3B when the battery cover 40 is assembled to the battery case 30. Even if the mating portion 62A does not simultaneously engage with the terminal 3A or the mating portion 62B does not simultaneously engage with the terminal 3B, the mating portion 62A is positioned near the terminal 3A and the mating portion 62B is positioned near the terminal 3B, making it possible to clearly show to the worker the correspondence (connection) between the mating portion 62A and the terminal 3A, and the correspondence (connection) between the mating portion 62B and the terminal 3B. This makes it even easier to perform the connection work of electrically connecting the bus bar 60A and the terminal 3A, and the connection work of electrically connecting the bus bar 60B and the terminal 3B.

[0040] Furthermore, the battery assembly method in the above embodiment is a method for assembling a battery case 30 having an accommodation section 32 that accommodates a battery pack 2, a battery cover 40 having a front side wall 44 in which an opening 45 is opened, and bus bars 60A, 60B that are arranged at a position on the inner surface of the front side wall 44, and includes the steps of: accommodating the battery pack 2 in the accommodation section 32; assembling the battery cover 40 to the battery case 30 so that the front side wall 44 covers the accommodation section 32 from the front side; and electrically connecting the terminal 3A and bus bar 60A arranged on the battery pack 2 while visually checking the terminal 3B and bus bar 60B from the outer surface of the front side wall 44 through the opening 45. As a result, when the battery cover 40 is assembled to the battery case 30, the worker can see the bus bar 60A and the terminal 3A through the opening 45, and can also see the bus bar 60B and the terminal 3B, making it easier to perform the connection work of electrically connecting the bus bar 60A and the terminal 3A, and the connection work of electrically connecting the bus bar 60B and the terminal 3B.

[0041] In the battery assembly structure of the above embodiment, the battery pack 2 is accommodated in the accommodation section 32 in a direction from the upper side (+WL direction) of the accommodation section 32. Furthermore, the battery cover 40 is attached to the battery case 30 in a direction that covers the accommodation section 32 from the upper side. Furthermore, the battery connector 50 is disposed on the battery cover 40 in a case where the battery connector 50 is disposed on the battery cover 40 in a position on the front sidewall 44 (front panel 44a). However, in the battery assembly structure of the present disclosure, the orientation of the battery pack 2, the orientation of the battery cover 40, and the location of the battery connector 50 are not limited to these. For example, these orientations can be changed as appropriate depending on the shape of the battery cover 40 (e.g., the direction in which the accommodation section 32 is opened), the location of the battery pack 2 relative to the vehicle, the vehicle structure, the specifications of the battery pack 2, and the like.

[0042] Regarding the housing direction of the battery pack 2 in the present disclosure, for example, when the housing section 32 is open to the rear side (+BL direction), the battery pack 2 may be housed in the housing section 32 from the rear side. In this case, the battery cover 40 may be assembled to the battery case 30 from the rear side of the housing section 32. Also, for example, when the housing section 32 is open to the front side (-BL direction), the battery pack 2 may be housed in the housing section 32 from the front side. In this case, the battery cover 40 may be assembled to the battery case 30 from the front side of the housing section 32. Also, for example, when the housing section 32 is open to one widthwise side (+TL direction), the battery pack 2 may be housed in the housing section 32 from one widthwise side. In this case, the battery cover 40 may be assembled to the battery case 30 from one widthwise side of the housing section 32. Also, for example, when the housing section 32 is open to the other widthwise side (-TL direction), the battery pack 2 may be housed in the housing section 32 from the other widthwise side.

[0043] Furthermore, the locations of the battery connector 50, bus bars, terminals, openings 45, and the like in the present disclosure can be changed as appropriate depending on the shape of the battery cover 40 (e.g., the direction in which the storage compartment 32 is opened), the location of the battery pack 2 relative to the vehicle, the vehicle structure, the specifications of the battery pack 2, and the like. Furthermore, the locations of the power harnesses HNA and HNB that electrically connect the terminals to the junction box are also changed in response to changes in the location of the terminals. There is no need to specifically modify the battery pack 2 to accommodate these changes in location. In other words, in the battery assembly structure of the present disclosure, various types of battery assembly structures can be realized by changing the shape of the battery case 30, the shape of the battery cover 40, and the locations of the battery connector 50, bus bars, terminals, and openings, without changing the battery pack 2.

[0044] Regarding the location of the battery connector 50 in the present disclosure, for example, the battery connector 50 may be disposed on the rear side wall of the battery cover, on one widthwise side wall of the battery cover 40, or on the other widthwise side wall. Depending on the location of the battery connector 50, the locations of the bus bar, terminals, opening 45, etc., also change. For example, when the battery connector 50 is disposed on one widthwise side wall of the battery cover 40, the bus bar is disposed along the inner surface of the one widthwise side wall. Furthermore, the terminals are disposed on one widthwise side of the battery pack. The opening 45 is disposed on the one widthwise side wall. Even in this case, the bus bar and terminals are disposed in positions visible from the outer surface of the one widthwise side wall through the opening 45.

[0045] Furthermore, the above-described embodiments are merely examples of specific embodiments for carrying out the present disclosure, and the technical scope of the present disclosure should not be interpreted as being limited by these embodiments. In other words, the present disclosure can be carried out in various forms without departing from its gist or main features. [Industrial Applicability]

[0046] The present disclosure is suitably used in vehicles having a battery assembly structure that requires easy connection work for electrically connecting bus bars and terminals. [Explanation of symbols]

[0047] HNA Power Harness HNB Power Harness 2 Battery pack 3A terminal 3B terminal 4A terminal block 4B terminal block 30 Battery case 32 Storage section 34 Bottom wall 36 Both side walls 36A Side wall part 36B Side wall part 40 Battery cover 42 Rear side wall 44 Front side wall 44a Front Panel 45 Opening 46 Upper wall 50 Battery Connector 60A busbar 60B busbar 62A mating part 62B fitting part 100 Assembly structure

Claims

1. a battery case having a housing portion for housing the battery pack; a battery cover having a wall portion covering the storage portion and an opening portion penetrating the wall portion; a connector disposed on the outer surface side of the wall portion; a bus bar disposed on the inner surface side of the wall portion for electrically connecting the connector and a terminal disposed on the battery pack; Equipped with the opening is disposed at a position where the bus bar and the terminal can be seen through the opening from an outer surface side of the wall portion when the battery cover is attached to the battery case so that the storage portion is covered by the wall portion. Battery assembly structure.

2. The terminals are provided in a protruding manner from the battery pack. The battery assembly structure according to claim 1 .

3. The bus bar has a recess that recesses upward so that the bus bar can be fitted onto the terminal from above. The battery assembly structure according to claim 1 .

4. a battery case having a housing portion for housing the battery pack; a battery cover having a wall portion and an opening portion formed in the wall portion; a bus bar disposed on an inner surface side of the wall portion; A battery assembly method for assembling the battery, comprising: housing the battery pack in the housing portion; assembling the battery cover to the battery case so that the wall portion covers the storage portion; electrically connecting a terminal disposed on the battery pack to the bus bar while visually observing the terminal through the opening from the outer surface side of the wall portion; Equipped with How to assemble the battery.

Images