JP5757850B2 - Battery pack and saddle riding type vehicle equipped with the same - Google Patents

Description

  The present invention relates to a battery pack and a saddle riding type vehicle including the battery pack, and more particularly to a battery pack having a plurality of rechargeable batteries and a saddle riding type vehicle including the battery pack.

  Conventionally, a battery pack having a plurality of rechargeable batteries has been proposed. Such a battery pack is generally provided with a positive power supply terminal and a negative power supply terminal, and by cutting off the electrical connection between these power supply terminals, the input / output of power from the power supply terminal can be cut off. A blocking part is provided.

  For example, the power supply device disclosed in Patent Document 1 includes an assembled battery, a case that houses the assembled battery, and a service plug that can block power input and output from the assembled battery. The service plug is configured by a fixed portion fixed to the case and a connection release portion formed to be detachable from the fixed portion. In this power supply device, the input / output of power from the assembled battery can be cut off by removing the connection release portion of the service plug from the fixed portion. Moreover, in this power supply device, the connection release portion of the service plug has a fuse. As described above, since the connection release portion can be removed from the fixed portion, the fuse replacement operation can be performed with the connection release portion removed from the fixed portion.

  In recent years, the range of use of such a battery pack has been expanded, and it is desired to use the battery pack in a situation where it is exposed to water. When a battery pack is used in a situation where it is covered with water, a structure for suppressing the ingress of water into the case is required. However, in the power supply device of Patent Document 1, the seal member is not provided in the portion where the service plug is provided. In other words, the power supply device of Patent Document 1 is not sufficiently waterproofed. Therefore, in patent document 1, it is thought that the utilization of the power supply device in the condition which receives water is not assumed. On the other hand, a battery pack has also been proposed in consideration of use in situations where it is covered with water. Such a battery pack is provided with a structure for preventing water from entering the case.

  For example, a battery pack disclosed in Patent Document 2 includes a battery block including a plurality of batteries, a battery case containing the battery block, an insulating plate disposed on the battery block inside the battery case, and an insulating plate. A circuit board provided and connected to the battery block, and a lid case for sealing the upper opening of the battery case. The lid case is provided with a housing recess that houses an upper opening and that is connected to the output line of the battery block, and a fuse cover that seals the opening of the housing recess via an O-ring. In this battery pack, since the opening of the storage recess storing the fuse is sealed by the fuse cover and the O-ring, water can be prevented from entering the storage recess. In this battery pack, when the fuse is blown, the current flow of the battery block is cut off, and the battery block is protected from overcurrent.

JP 2011-8954 A JP 2011-49014 A

  Also in the battery pack of Patent Document 2, it is conceivable that water enters the housing recess when, for example, the fuse is replaced. However, in the battery pack of Patent Document 2, when water enters the storage recess, the fuse cover must be removed and the water discharged from the opening. In particular, when it is found that water has entered the storage recess after the fuse cover is attached, the fuse cover must be removed only for discharging water, resulting in poor work efficiency. Thus, although the battery pack of patent document 2 is excellent in waterproofness, when the case where water permeates into the accommodation recessed part is taken into consideration, it is necessary to handle it carefully in a situation where it is covered with water.

  SUMMARY OF THE INVENTION Therefore, a main object of the present invention is to provide a battery pack that is excellent in waterproofness and easy to handle even under the condition of being covered with water, and a straddle-type vehicle including the battery pack.

In order to achieve the above object, a battery pack according to claim 1 includes a case, a plurality of rechargeable batteries accommodated in the case, and a positive first power source provided so as to be exposed outside the case. A terminal and a negative second power supply terminal; and a lead portion that electrically connects the first power supply terminal, the plurality of batteries, and the second power supply terminal, and the lead portion includes a first power supply terminal and a second power supply terminal. It includes a blocking portion for blocking the input and output of electric power from electrical connecting the first power supply terminal and the second power supply terminal by cutting the cut-off portion, a first connection terminal electrically connected to the first power supply terminal A first connection chamber electrically connected to the second power supply terminal, and a detachable portion detachably attached to the first connection terminal and the second connection terminal, wherein the case is watertight Including a second storage chamber having a drain for discharging water; At least a portion and a plurality of batteries over de portion accommodated in the first accommodating chamber, the first connection terminal and second connection terminal is housed in the second housing chamber, drainage unit, the first connection terminal detachable portion And the second connection terminal are connected to the first connection terminal and the second connection terminal, and the detachable portion is connected to the first connection terminal and the second connection terminal. The two connection terminals are electrically connected to each other through the attachment / detachment portion, while the attachment / detachment portion is detached from the first connection terminal and the second connection terminal, thereby electrically connecting the first connection terminal and the second connection terminal. It is characterized in that a simple connection is disconnected .

  The battery pack according to claim 2 is the battery pack according to claim 1, wherein the attachment / detachment portion is attachable / detachable to / from the third connection terminal and the second connection terminal provided to be attachable / detachable to / from the first connection terminal. And the second storage chamber has an insertion portion for inserting the third connection terminal and the fourth connection terminal.

  The battery pack according to claim 3 is the battery pack according to claim 2, wherein the detachable portion further includes a main body portion that electrically connects the third connection terminal and the fourth connection terminal, and the insertion portion. Is characterized by passing the third connection terminal and the fourth connection terminal but not the main body.

  The battery pack according to claim 4 is the battery pack according to claim 3, wherein the plug-in portion includes a first hole portion into which the third connection terminal can be inserted and a second hole portion into which the fourth connection terminal can be inserted. It is characterized by including.

  The battery pack according to claim 5 is the battery pack according to claim 2, wherein the first connection terminal and the third connection terminal are connected at a position away from the inner surface of the second storage chamber. The fourth connection terminal is connected at a position away from the inner surface of the second storage chamber.

  The battery pack according to claim 6 is the battery pack according to claim 5, wherein the inner surface of the second storage chamber has a plurality of inner surface portions, and the insertion portion is any one of the plurality of inner surface portions. It opens in one inner surface part, and the drainage part is characterized by opening in the corner | angular part formed by at least 2 or more inner surface parts among several inner surface parts.

  The battery pack according to claim 7 is the battery pack according to any one of claims 1 to 6, further comprising one or a plurality of seal members, the case includes a plurality of case members, and the plurality of case members include: It is characterized by being combined with each other with one or a plurality of sealing members so as to form a first storage chamber.

  The battery pack according to claim 8 is the battery pack according to any one of claims 1 to 6, wherein the attaching / detaching portion includes a fuse.

  A straddle-type vehicle according to a ninth aspect includes the battery pack according to any one of the first to sixth aspects.

  In the battery pack according to claim 1, the input / output of electric power from the first power supply terminal and the second power supply terminal can be cut off by removing the attachment / detachment portion of the interruption portion from the first connection terminal and the second connection terminal. it can. Here, the first connection terminal and the second connection terminal are accommodated in a second accommodation chamber having a drainage portion. For this reason, for example, even when water enters the second storage chamber when the detachable portion is removed from the battery pack, the water can be easily discharged from the drainage portion. Further, the plurality of batteries are housed in a first housing chamber that is watertight. In this case, even if water enters the second storage chamber, water can be prevented from entering the first storage chamber, so that water can be prevented from adhering to the plurality of batteries. As a result of the above, it is possible to ensure excellent waterproofness of the battery pack, and it is easy to handle the battery pack even under the condition of being covered with water.

  In the battery pack according to the second aspect, the third connection terminal and the fourth connection terminal of the detachable portion can be inserted into the second storage chamber from the outside of the second storage chamber through the insertion portion. Thereby, removal of an attachment / detachment part becomes easy.

  In the battery pack according to claim 3, it is only necessary that the insertion portion can pass at least the third connection terminal and the fourth connection terminal. In this case, since an insertion part can be comprised small, it can suppress that water permeates into a 2nd storage chamber from an insertion part.

  In the battery pack according to claim 4, the first hole only needs to have a size that allows the third connection terminal to pass therethrough, and the second hole has a size that allows the fourth connection terminal to pass through. As long as it has. In this case, water enters the second storage chamber from the first hole and the second hole by forming the first hole and the second hole as small as possible while ensuring a necessary and sufficient size. Can be sufficiently suppressed.

  In the battery pack according to claim 5, the connection portion between the first connection terminal and the third connection terminal and the connection portion between the second connection terminal and the fourth connection terminal are separated from the inner surface of the second storage chamber. Thereby, even when water intrudes into the second storage chamber, water is prevented from adhering to the connection portion between the first connection terminal and the third connection terminal and the connection portion between the second connection terminal and the fourth connection terminal. it can.

  In the battery pack according to claim 6, since the drainage portion is provided so as to open at the corner of the second storage chamber, even when water enters the second storage chamber from the insertion portion, Water can be discharged efficiently.

  In the battery pack according to the seventh aspect, the first storage chamber can be made watertight with a simple configuration by combining a plurality of case members with one or more seal members interposed therebetween.

  In the battery pack according to claim 8, the attaching / detaching portion includes a fuse. In this case, since it is not necessary to further provide another fuse for preventing overcurrent of the battery pack, the configuration of the battery pack can be simplified. Further, the fuse can be easily replaced by removing the detachable portion from the first connection terminal and the second connection terminal. This facilitates maintenance of the battery pack.

  In order to facilitate the maintenance of a saddle-ride type vehicle equipped with a battery pack, it is necessary to mount a battery pack on the saddle-ride type vehicle that has sufficient waterproofness and is easy to handle even under water. desirable. Therefore, the above-described battery pack that can ensure excellent waterproofness and is easy to handle even under the condition of being covered with water can be suitably used for a straddle-type vehicle.

  According to the present invention, it is possible to obtain a battery pack that is excellent in waterproofness and easy to handle even under the condition of being covered with water, and a straddle-type vehicle including the battery pack.

It is a side view which shows the scooter which concerns on embodiment of this invention. It is a side view which shows the scooter of the state which removed the vehicle body cover. It is a perspective view which shows the external appearance of the battery pack which concerns on embodiment of this invention. It is a disassembled perspective view which shows the battery pack which concerns on embodiment of this invention. It is a perspective view which shows the internal structure of the battery pack which concerns on embodiment of this invention. It is a perspective view which shows a case member. It is sectional drawing solution which shows the relationship between the protrusion part of a side wall part, the protrusion part of a surrounding wall part, and a terminal protection part. It is a cross-sectional solution figure which shows the structure of the periphery of a protective wall part. It is a perspective view which shows the structure of the periphery of a protective wall part. It is a perspective view which shows the structure of the periphery of a protective wall part. It is a cross-sectional view solution figure which shows the relationship between a protective wall part and an attaching part. It is a cross-sectional solution figure which shows a 1st battery unit and a 2nd battery unit. It is an illustration figure which shows the electric circuit of the battery pack which concerns on embodiment of this invention. It is an illustration figure which shows notionally the structure of the battery pack which concerns on embodiment of this invention. It is a perspective view which shows the battery pack which concerns on other embodiment of this invention. It is a cross-sectional view solution figure which shows the structure of the periphery of the 2nd storage chamber of the battery pack which concerns on other embodiment of this invention. It is a perspective view which shows the battery pack which concerns on other embodiment of this invention. It is a cross-sectional solution figure which shows the structure of the periphery of the 2nd storage chamber of the battery pack which concerns on other embodiment of this invention. It is a perspective view which shows the battery pack which concerns on other embodiment of this invention. It is a cross-sectional illustration figure which shows the structure of the periphery of the 2nd storage chamber of the battery pack which concerns on other embodiment of this invention. It is a cross-sectional solution figure which shows the structure of the periphery of the 2nd storage chamber of the battery pack which concerns on further another embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. Here, the case where the battery pack 40 according to the embodiment of the present invention is mounted on the scooter 10 which is an example of the saddle riding type vehicle will be described. In the description of the scooter 10, front and rear, left and right, and top and bottom mean front and rear, left and right, and top and bottom with respect to a state in which the driver is seated on the seat 38 of the scooter 10 toward the handle 32.

  FIG. 1 is a side view showing the scooter 10. The scooter 10 has a vehicle body frame 12 and a vehicle body cover 14. In addition, in order to avoid that drawing becomes complicated, the vehicle body frame 12 is simplified and shown in FIG.

  FIG. 2 is a side view showing the scooter 10 with the vehicle body cover 14 removed.

  Referring to FIG. 2, the vehicle body frame 12 includes a head pipe 16, a front frame 18 that extends obliquely downward rearward from the head pipe 16, and a pair of rear frames 20 that extend rearward from the lower end of the front frame 18 (FIG. 2). 2 includes only the left rear frame 20). The pair of rear frames 20 are arranged so as to be aligned in the width direction (left-right direction) of the scooter 10.

  Each rear frame 20 includes a first frame portion 22 extending rearward from the lower end portion of the front frame 18, a second frame portion 24 extending obliquely upward from the rear end portion of the first frame portion 22, and an upper end of the second frame portion 24. A third frame portion 26 extending rearward from the first portion, and a fourth frame portion 28 connecting the second frame portion 24 and the third frame portion 26. The fourth frame portion 28 extends rearward and obliquely upward from the second frame portion 24 so as to connect the central portion of the second frame portion 24 in the vertical direction and the central portion of the third frame portion 26 in the front-rear direction.

  A steering shaft 30 is rotatably inserted into the head pipe 16. A handle 32 is attached to the upper end portion of the steering shaft 30. A front fork 34 is attached to the lower end portion of the steering shaft 30. A front wheel 36 is rotatably supported at the lower end of the front fork 34.

  A seat 38 is provided above the second frame portion 24. The battery pack 40 is supported by the rear frame 20 below the seat 38. More specifically, the battery pack 40 is supported by the rear frame 20 via a support member 42 provided at the lower end portion of the second frame portion 24 and a support member 44 provided at the front end portion of the third frame portion 26. . In this embodiment, the battery pack 40 is disposed so as to be inclined slightly rearward. In addition, it is preferable that the battery pack 40 is provided so that at least a part of a gap 112 (drainage portion), which will be described later, is located below the insertion portion 162 (through holes 162a and 162b).

  A swing unit 46 is swingably supported by the fourth frame portion 28. The swing unit 46 includes an electric motor 48 and a rear wheel 50. In the scooter 10, the electric motor 48 is driven by the electric power supplied from the battery pack 40, and the rear wheel 50 is driven by the output of the electric motor 48.

  3 is a perspective view showing an appearance of the battery pack 40, FIG. 4 is an exploded perspective view showing the battery pack 40, and FIG. 5 is a perspective view showing an internal structure of the battery pack 40. As shown in FIG. In FIG. 5, the first battery unit 62 and the second battery unit 64 are shown in a simplified manner in order to avoid the drawing from becoming complicated. 3 and subsequent figures are provided with arrows indicating the X, Y, and Z directions orthogonal to each other in order to clarify the positional relationship between the constituent members of the battery pack.

  Referring to FIG. 3, battery pack 40 includes a case 52. The case 52 has a configuration that is divided into a plurality of case members in the Z direction. In this embodiment, the case 52 has a configuration divided into four case members 54, 56, 58, 60 in the Z direction. Case members 54, 56, 58, and 60 are formed of resin, for example.

  Referring to FIGS. 4 and 5, battery pack 40 further includes a first battery unit 62 and a second battery unit 64. The first battery unit 62 and the second battery unit 64 are accommodated in the case 52. More specifically, the first battery unit 62 is disposed between the case member 54 and the case member 56, and the second battery unit 64 is disposed between the case member 58 and the case member 60.

  The case member 54 includes a plate-like and substantially rectangular side wall portion 66, a frame-shaped peripheral wall portion 68 extending from the outer peripheral edge of the side wall portion 66 toward the case member 56, and boss portions 70 provided at four corners of the side wall portion 66. Have The side wall portion 66 is provided so as to extend in the X direction and the Y direction.

  Referring to FIG. 5, the peripheral wall portion 68 has a recess 68 b in an edge portion 68 a on the case member 56 side. The recess 68b has a ring shape when viewed from the case member 56 side (as viewed in the Z direction). The recess 68 b is provided so as to open toward the case member 56.

  4 and 5, the case member 56 includes a plate-like and substantially rectangular side wall 72, a frame-shaped peripheral wall 74 extending from the outer peripheral edge of the side wall 72 toward the case member 54, and the side wall 72. And boss portions 80a, 80b, 80c, 80d (see FIG. 4) provided at the four corners of the side wall portion 72, and hollow connecting portions 76, 78 extending toward the case member 58 side. The connecting portion 76 has a shape corresponding to a connecting portion 86 described later of the case member 58, and the connecting portion 78 has a shape corresponding to a connecting portion 88 described later of the case member 58.

  The side wall 72 is provided so as to extend in the X direction and the Y direction. Referring to FIG. 4, side wall 72 has through holes 72a, 72b, 72c. The through hole 72 a is provided so as to extend in the X direction along one long side of the side wall portion 72. The through hole 72 b has a rectangular shape and is provided in the vicinity of one short side of the side wall 72. The through hole 72 c has a rectangular shape and is provided in the vicinity of the other short side of the side wall 72. The through holes 72a, 72b, 72c are located inside the connecting portion 78 when viewed from the case member 58 side (in the Z direction view).

  Referring to FIG. 5, the peripheral wall portion 74 has a convex portion 74 b on the edge portion 74 a on the case member 54 side. The convex portion 74b has a ring shape when viewed from the case member 54 side (as viewed in the Z direction). The convex portion 74 b is provided so as to protrude toward the case member 54.

  The connecting portion 76 has a recess 76b in the edge 76a on the case member 58 side. The recess 76b has an annular shape when viewed from the case member 58 side (in the Z direction view). The recess 76 b is provided so as to open toward the case member 58. The connecting portion 78 has a concave portion 78b in the edge portion 78a on the case member 58 side. The recess 78b has an annular shape when viewed from the case member 58 (in the Z direction view). The recess 78b is provided so as to open toward the case member 58.

  FIG. 6 is a perspective view showing the case member 58.

  4 to 6, the case member 58 includes a plate-like and substantially rectangular side wall portion 82, a frame-shaped peripheral wall portion 84 extending from the outer peripheral edge of the side wall portion 82 toward the case member 60, and the side wall portion. Connecting portions 86 and 88 extending from the side 82 toward the case member 56, a frame-shaped protective wall 90 extending from the side wall 82 toward the case member 56 (see FIGS. 4 and 6), and a substantially cylindrical terminal protection Portions 92 and 94 (see FIGS. 4 and 6), a cylindrical mounting portion 96 (see FIGS. 4 and 6), and boss portions 98a, 98b, 98c and 98d provided at the four corners of the side wall portion 82 (see FIG. 4). ). The terminal protector 92 is provided with a power supply terminal 102 (see FIG. 7) described later, and the terminal protector 94 is provided with a power supply terminal 118 (see FIG. 8) described later. In this embodiment, electric power is input / output to / from a plurality of batteries 182 (see FIG. 11) described later of the first battery unit 62 and the second battery unit 64 via the power terminals 102 and 118.

  The side wall portion 82 is provided so as to extend in the X direction and the Y direction. Referring to FIGS. 4 and 6, side wall portion 82 has through holes 82a, 82b, 82c and a protruding portion 82d. The through hole 82 a is provided so as to extend in the X direction along one long side of the side wall portion 82. The through hole 82 b has a rectangular shape and is provided in the vicinity of one short side of the side wall portion 82. The through hole 82 c has a rectangular shape and is provided in the vicinity of the other short side of the side wall portion 82. Referring to FIG. 6, through holes 82 a, 82 b, and 82 c are located inside connection portion 88 when viewed from the case member 56 side (when viewed in the Z direction). The protruding portion 82d is provided so as to protrude toward the case member 56.

  Referring to FIG. 5, the peripheral wall portion 84 has a convex portion 84 b on the edge portion 84 a on the case member 60 side. The convex portion 84b has a ring shape when viewed from the case member 60 side (when viewed in the Z direction). The convex portion 84 b is provided so as to protrude toward the case member 60.

  Referring to FIGS. 4 and 6, peripheral wall portion 84 has a protruding portion 84 c that continues to protruding portion 82 d of side wall portion 82. The terminal protection part 92 is provided on the protruding part 84c so as to extend in the Y direction.

  The connecting portion 86 is provided so as to extend from the side wall portion 82 toward the case member 56 side. The protruding part 82d of the side wall part 82 is located at a substantially central part of the connecting part 86 in the X direction. Referring to FIG. 5, the connecting portion 86 has a convex portion 86 b on the edge portion 86 a on the case member 56 side. The convex portion 86b has an annular shape when viewed from the case member 56 side (when viewed in the Z direction). The convex portion 86 b is provided so as to protrude toward the case member 56. The connecting portion 88 has a convex portion 88b on the edge portion 88a on the case member 56 side. The convex portion 88b has an annular shape when viewed from the case member 56 side (when viewed in the Z direction). The convex portion 88 b is provided so as to protrude toward the case member 56.

  FIG. 7 is a cross-sectional view illustrating the relationship between the protruding portion 82 d of the side wall portion 82, the protruding portion 84 c of the peripheral wall portion 84, and the terminal protection portion 92.

  Referring to FIG. 7, terminal protection portion 92 is provided so as to extend in the Y direction from the outer surface of peripheral wall portion 84 (projection portion 84c). The terminal protection part 92 has a through hole 92a extending in the Y direction at the center thereof. The through hole 92a has a circular cross section.

  The protruding portion 84c of the peripheral wall portion 84 has a through hole 84d that extends in the Y direction and communicates with the through hole 92a. The through hole 84d has a circular cross section. The diameter of the through hole 84d is smaller than the diameter of the through hole 92a, and the through hole 84d and the through hole 92a are provided coaxially. With the annular seal member 100 fitted in the through hole 92a, the power supply terminal 102 is fitted in the through hole 92a and the through hole 84d. More specifically, the power terminal 102 has its one end 102 a exposed to the outside of the case 52 (see FIG. 3) in the terminal protection section 92 and the other end 102 b facing the inside of the case 52. Is provided. The through hole 84 d and the through hole 92 a are sealed by the seal member 100 and the power terminal 102.

  Various gaskets can be used as the seal member 100. In this embodiment, as the sealing member 100, for example, a gasket made of resin (rubber or plastic) or metal can be used. Further, as the seal member 100, for example, an adhesive or a double-sided tape may be used. The seal member described later is the same as the seal member 100.

  In this embodiment, the power supply terminal 102 is used as a positive power supply terminal, for example. Although not shown in FIG. 7 in order to avoid complication of the drawing, the other end portion 102b of the power terminal 102 is connected to the first battery unit 62 via a connecting member 246 (see FIG. 13) described later. And electrically connected to the second battery unit 64.

  FIG. 8 is an illustrative sectional view showing a configuration around the protective wall 90, and FIGS. 9 and 10 are perspective views showing a configuration around the protective wall 90. FIG.

  Referring to FIG. 6, the protective wall 90 includes a first wall 90a, a second wall 90b, a third wall 90c, a fourth wall 90d, a fifth wall 90e, and a sixth wall 90f. Including. The first wall 90a extends in the X direction from the boss 98a toward the boss 98b. The second wall portion 90b extends in the Y direction so as to connect the boss portion 98a and the connecting portion 88. The third wall portion 90c extends in the Y direction from the vicinity of one end portion (end portion on the boss portion 98b side) of the second wall portion 90b toward the connecting portion 88 side. The fourth wall portion 90d extends obliquely from one end portion (the end portion on the connecting portion 88 side) of the third wall portion 90c toward the second wall portion 90b side. The fifth wall portion 90e extends in the Y direction from one end portion (end portion on the connection portion 88 side) of the fourth wall portion 90d toward the connection portion 88 side. The sixth wall portion 90f extends in the X direction so as to connect one end portion (the end portion on the connecting portion 88 side) of the fourth wall portion 90e and the second wall portion 90b. With reference to FIG. 6, FIG. 8, and FIG. 9, in this embodiment, the opening 104 is formed by the edge part of the protective wall part 90, and the boss | hub part 98a.

  With reference to FIGS. 8 to 10, a boss portion 106 is provided inside the protective wall portion 90 so as to extend in the Z direction from the side wall portion 82 toward the side wall portion 72 (see FIG. 4). In order to avoid complication of the drawing, members (including the boss portion 106) provided inside the protective wall 90 are not shown in FIG.

  With reference to FIGS. 4, 6, and 8, plate-like lid member 108 is provided so as to close opening 104. Referring to FIG. 8, lid member 108 is attached to boss portion 106 by a fixing member 110. For example, a screw can be used as the fixing member 110. The fixing member described later is the same as the fixing member 110.

  With reference to FIGS. 6 and 8, lid member 108 is attached to boss portion 106 such that gap 112 is formed between protective wall portion 90 and lid member 108. In this embodiment, the side wall 82, the protective wall 90, the boss 98a, and the lid member 108 form the second storage chamber R2.

  Referring to FIGS. 6, 8 and 9, in this embodiment, the inner surface 114 of the second storage chamber R2 has a plurality of inner surface portions 114a, 114b, 114c, 114d, 114e, 114f, 114g, and 114h. The inner surface portion 114a is formed by the first wall portion 90a, the inner surface portion 114b is formed by the second wall portion 90b, the inner surface portion 114c is formed by the third wall portion 90c, and the inner surface portion 114d is formed by the fourth wall portion 90d. The inner surface portion 114e is formed by the fifth wall portion 90e, and the inner surface portion 114f is formed by the sixth wall portion 90f. The inner surface portion 114 g is formed by the lid member 108, and the inner surface portion 114 h is formed by the side wall portion 82.

  Referring to FIG. 8, terminal protection portion 94 is provided to extend in the Y direction from first wall portion 90 a of protection wall portion 90. The terminal protection part 94 has a through hole 94a penetrating in the Y direction at the center thereof. The through hole 94a has a circular cross section.

  The first wall 90a has a through hole 90g that extends in the Y direction and communicates with the through hole 94a. The through hole 90g has a circular cross section. The diameter of the through hole 90g is smaller than the diameter of the through hole 94a, and the through hole 90g and the through hole 94a are provided coaxially. With the annular seal member 116 fitted in the through hole 94a, the power supply terminal 118 is fitted in the through hole 94a and the through hole 90g. More specifically, one end portion 118a of the power supply terminal 118 is exposed to the outside of the second storage chamber R2 (case 52) in the terminal protection portion 94, and the other end portion 118b is in the second storage chamber R2. It is provided to face inward. In this embodiment, the power supply terminal 118 is used as a negative power supply terminal, for example.

  A plurality (three in this embodiment) of convex portions 120, 122, and 124 are provided so as to extend from the side wall portion 82 toward the lid member 108 in the second storage chamber R2. In this embodiment, the convex portions 120 and 122 are provided between the boss portion 106 and the first wall portion 90a. More specifically, the convex part 120 is provided closer to the first wall part 90 a, and the convex part 122 is provided between the boss part 106 and the convex part 120. The convex portion 124 is provided between the boss portion 106 and the sixth wall portion 90f. A nut 126 is embedded in the convex portion 120, nuts 128 and 130 are embedded in the convex portion 122, and a nut 132 is embedded in the convex portion 124.

  The other end portion 118 b of the power terminal 118 and one end portion of the plate-like lead member 134 are fixed to the convex portion 120 and the nut 126 by the fixing member 136. Thereby, the power supply terminal 118 and the lead member 134 are electrically connected.

  The other end portion of the lead member 134 is fixed to the convex portion 122 and the nut 128 together with the connection terminal 140 by the fixing member 138. Thereby, the lead member 134 and the connection terminal 140 are electrically connected. That is, the power supply terminal 118 and the connection terminal 140 are electrically connected.

  The connection terminal 140 is further fixed to the convex portion 122 and the nut 132 by a fixing member 142. The connection terminal 140 includes a pair of plate-like conductive members 140a and 140b. In order to avoid the drawings from becoming complicated, in FIG. 9 and FIG. 10, the connection terminal 140 and a connection terminal 146 described later are illustrated in a simplified manner.

  Referring to FIG. 8, connection terminal 146 is fixed to convex portion 124 and nut 130 by fixing member 144. The connection terminal 140 and the connection terminal 146 are provided apart from each other in the Y direction. The connection terminal 146 includes a pair of plate-like conductive members 146a and 146b. In this embodiment, the connection terminal 146 corresponds to the first connection terminal, and the connection terminal 140 corresponds to the second connection terminal.

  Referring to FIG. 8, the second storage chamber R2 has a through hole 148 that opens in the inner surface portion 114h. The through hole 148 is formed in the side wall portion 82. The through hole 148 is formed between the convex portion 124 and the sixth wall portion 90f when viewed in the Z direction. In a state where the annular seal member 150 is fitted in the through hole 148, one end portion of the cylindrical connecting member 152 is fitted into the through hole 148. The connecting member 152 is made of a conductive material.

  One end of the connecting member 152 is fixed to the side wall 82 by the fixing member 154 together with the hollow disk-shaped sealing member 156 and the plate-shaped lead member 158. In this embodiment, at least one of the fixing member 154 and the seal member 156 is made of a conductive material. The through hole 148 is sealed by the seal member 150, the connecting member 152, the fixing member 154, and the seal member 156.

  The connection terminal 146 is fixed to the other end of the connecting member 152 by a fixing member 160. Thereby, the connection terminal 146 and the lead member 158 are electrically connected via the coupling member 152.

  FIG. 11 is a cross-sectional view showing the relationship between the protective wall 90 and the attachment 96. In FIG. 11, a service plug 164 to be described later is shown in a simplified manner in order to avoid complicated drawing.

  With reference to FIGS. 9 to 11, the attachment portion 96 is provided so as to extend in the X direction from the outer surface of the second wall portion 90 b of the protective wall portion 90. The 2nd wall part 90b has the insertion part 162 for inserting the connection terminal 168,170 mentioned later. In this embodiment, the insertion part 162 includes through holes 162a and 162b that penetrate the second wall part 90b in the X direction. The through holes 162a and 162b each open at the inner surface portion 114b.

  A service plug 164 is detachably attached to the attachment portion 96.

Referring to FIGS. 9 and 11, service plug 164 has an attachment / detachment portion 166 that can be attached / detached to / from connection terminal 140 and connection terminal 146. The attachment / detachment unit 166 electrically connects the connection terminal 168 provided detachably with respect to the connection terminal 140, the connection terminal 170 provided detachably with respect to the connection terminal 146, and the connection terminal 168 and the connection terminal 170. A main body 172 (see FIG. 11) is included. Body portion 172 includes, for example, a fuse.

Referring to FIG. 10, the connection terminal 168 is inserted into the second storage chamber R <b> 2 from the outside of the second storage chamber R <b> 2 (see FIG. 11) so as to pass through the through hole 162 a and is connected to the connection terminal 140. Similarly, the connection terminal 170 is inserted into the second storage chamber R2 from the outside of the second storage chamber R2 so as to pass through the through hole 162b, and is connected to the connection terminal 146. 8 and 10, connection terminal 168 is connected to connection terminal 140 at a position away from inner surface 114, and connection terminal 170 is connected to connection terminal 146 at a position away from inner surface 114. Referring to FIG. 8, in this embodiment, connection terminal 168 is connected to connection terminal 140 by being sandwiched between conductive members 140a and 140b, and connection terminal 170 is sandwiched between conductive members 146a and 146b. To the connection terminal 146. Thereby, the connection terminal 140 and the connection terminal 146 are electrically connected via the attaching / detaching portion 166.

  In this embodiment, the connection terminal 170 corresponds to the third connection terminal, the connection terminal 168 corresponds to the fourth connection terminal, the through hole 162b corresponds to the first hole, and the through hole 162a corresponds to the second hole. Equivalent to.

  8 and 10, the connection terminal 168 is connected to the connection terminal 140 and the connection terminal 170 is connected to the connection terminal 146. However, the connection terminal 170 is connected to the connection terminal 140. May be connected, and the connection terminal 168 may be connected to the connection terminal 146. In this case, the connection terminal 168 corresponds to the third connection terminal, the connection terminal 170 corresponds to the fourth connection terminal, the through hole 162a corresponds to the first hole, and the through hole 162b corresponds to the second hole. Equivalent to.

  In this embodiment, the insertion portion 162 (through holes 162a and 162b) is configured to pass the connection terminals 168 and 170 but not the main body portion 172.

  In this embodiment, the gap 112 corresponds to the drainage portion. Therefore, in this embodiment, the second storage chamber R2 is formed by a corner portion formed by at least two or more inner surfaces (in the second storage chamber R2 shown in FIG. 11, for example, an inner surface portion 114e and an inner surface portion 114g). A drainage portion (gap 112) that opens at the corner portion 174).

  4 and 5, the case member 60 includes a plate-like and substantially rectangular side wall portion 176, a frame-like peripheral wall portion 178 extending from the outer peripheral edge of the side wall portion 176 toward the case member 58, and the side wall. Boss portions 180 (see FIG. 4) provided at the four corners of the portion 176, respectively. The side wall part 176 is provided so as to extend in the X direction and the Y direction.

  Referring to FIG. 5, the peripheral wall portion 178 has a recess 178 b in the edge portion 178 a on the case member 58 side. The recess 178b has an annular shape when viewed from the case member 58 side (in the Z direction view). The recess 178 b is provided so as to open toward the case member 58.

  FIG. 12 is a cross-sectional view showing the first battery unit 62 and the second battery unit 64. Referring to FIG. 12, first battery unit 62 electrically connects a plurality of rechargeable batteries 182 arranged in parallel to each other, a battery holding unit 184 that holds a plurality of batteries 182, and a plurality of batteries 182. A plurality of plate-like lead members 186, 188, 190, and 192 are provided. The lead members 186, 188, 190, and 192 are provided so as to extend in the Y direction, respectively. In this embodiment, seven lead members 186, one lead member 188, six lead members 190, and one lead member 192 are provided.

  The battery 182 has a cylindrical shape and is arranged in parallel to the Z direction. The plurality of batteries 182 are arranged in a plurality of rows in the X direction and in a plurality of columns in the Y direction. In this embodiment, the plurality of batteries 182 are arranged in a grid so as to form 14 rows in the X direction and 6 columns in the Y direction.

  In the following description of the plurality of batteries 182 of the first battery unit 62, the first row closest to the boss portions 80a and 80c (see FIG. 4) is the first row, and the boss portions 80b and 80d (see FIG. 4) are the most. The closest line is the 14th line. In this embodiment, the plurality of batteries 182 are held by the battery holding unit 184 so that the batteries 182 arranged in the odd rows and the batteries 182 arranged in the even rows face in opposite directions. Specifically, for example, the plurality of batteries 182 in the first, third, fifth, seventh, ninth, eleventh and thirteenth rows are arranged so that the positive electrode faces the side wall 66 side. The plurality of batteries 182 in the 10th, 12th and 14th rows are arranged so that the negative pole faces the side wall 66 side.

  One lead member 186 is connected to one end (the end on the side wall 66 side) of the plurality of batteries 182 in the first row and one end (the end on the side wall 66 side) of the plurality of batteries 182 in the second row. The Accordingly, one end portions of the plurality of batteries 182 in the first row are electrically connected in parallel, and one end portions of the plurality of batteries 182 in the second row are electrically connected in parallel. In addition, one end portions of the batteries 182 in the first row and one end portions of the batteries 182 in the second row are electrically connected in series. Similarly, six lead members 186 are connected to one end portions of the plurality of batteries 182 in the third to fourteenth rows. Specifically, one lead member 186 is connected for each of the plurality of batteries 182 in two rows.

  A lead member 188 is connected to the other end portion (the end portion on the side wall portion 72 side) of the batteries 182 in the first row. As a result, the other end portions of the batteries 182 in the first row are electrically connected in parallel. One lead member 190 is connected to the other end of the plurality of batteries 182 in the second row and the other end of the plurality of batteries 182 in the third row. Thereby, the other ends of the batteries 182 in the second row are electrically connected in parallel, and the other ends of the batteries 182 in the third row are electrically connected in parallel. In addition, the other ends of the batteries 182 in the second row and the other ends of the batteries 182 in the third row are electrically connected in series. Similarly, five lead members 190 are connected to the other end portions of the plurality of batteries 182 in the fourth to thirteenth rows. Specifically, one lead member 190 is connected for each of the plurality of batteries 182 in two rows. The lead member 192 is connected to the other ends of the batteries 182 in the 14th row. Thereby, the other ends of the batteries 182 in the 14th row are electrically connected in parallel.

  Lead members 186, 188, 190, and 192 are welded to, for example, a plurality of batteries 182.

  The battery holding part 184 includes a substantially rectangular parallelepiped first holding part 194 and a substantially rectangular parallelepiped second holding part 196. 4 and 12, the first holding portion 194 has convex portions 198 and 200 at the end portion on the second holding portion 196 side. Each of the convex portions 198 and 200 is provided so as to protrude in the X direction and extend in the Y direction. Referring to FIG. 4, boss portions 202 are provided at both ends of convex portion 198 and both ends of convex portion 200, respectively.

  Referring to FIGS. 4 and 12, second battery unit 64 has substantially the same configuration as first battery unit 62. The second battery unit 64 is different from the first battery unit 62 in that it has a battery holding part 204 instead of the battery holding part 184 and a plate-like lead member 206 (see FIG. 12). (See FIG. 12). In addition, about the 2nd battery unit 64, only a different structure from the 1st battery unit 62 is demonstrated, and description is abbreviate | omitted about the structure same as the 1st battery unit 62.

  The battery holding unit 204 is different from the battery holding unit 184 in that the first holding unit 208 is provided instead of the first holding unit 194. The first holding part 208 is different from the first holding part 194 in that it has a convex part 210 instead of the convex part 198. The convex portion 210 is different from the convex portion 198 in that it has a through hole 212 that penetrates the convex portion 210 in the Z direction. In addition, the boss | hub part 202 (refer FIG. 4) is provided in the both ends of the convex part 210 similarly to the both ends of the convex part 198. FIG.

  Referring to FIG. 12, the lead member 206 has a shape bent in a substantially Z shape when viewed in the Y direction, and protrudes from the end portions (end portions on the side wall portion 176 side) of the plurality of batteries 182 in the first row. It is provided so as to extend to the shape part 210. Similarly to the lead member 188, the lead member 206 is connected to the end portions (end portions on the side wall portion 176 side) of the batteries 182 in the first row.

  With reference to FIG. 8 and FIG. 11, one end portion of the cylindrical connecting member 214 is fitted into the through hole 212 of the convex portion 210. The connecting member 214 is made of a conductive material. One end of the connecting member 214 is fixed to the convex portion 210 together with the lead member 206 by a fixing member 216. A lead member 158 is fixed to the other end of the connecting member 214 by a fixing member 218. As a result, the connection terminal 146 and the lead member 206 are electrically connected via the connecting member 152, the lead member 158, and the connecting member 214. That is, the connection terminal 146 and the plurality of batteries 182 of the second battery unit 64 are electrically connected.

  Referring to FIG. 4, connection unit 220, lead member 222, and lead member 224 are provided so as to connect first battery unit 62 and second battery unit 64. The connection unit 220 includes a substrate 226 and a plurality of lead members 228 fixed to the substrate 226. The connecting unit 220 is inserted into the through hole 72a of the case member 56 and the through hole 82a of the case member 58, and the lead member 222 is inserted into the through hole 72b of the case member 56 and the through hole 82b of the case member 58, and the lead member. 224 is inserted through the through hole 72 c of the case member 56 and the through hole 82 c of the case member 58. The plurality of batteries 182 (see FIG. 12) of the first battery unit 62 and the plurality of batteries 182 (see FIG. 12) of the second battery unit 64 are connected via a lead member 222, a lead member 224, and a plurality of lead members 228. Electrically connected.

  Referring to FIGS. 4 and 5, first battery unit 62 is accommodated by case member 54 and case member 56. The peripheral wall portion 68 of the case member 54 and the peripheral wall portion 74 of the case member 56 are combined with each other with the annular seal member 230 interposed therebetween. More specifically, referring to FIG. 5, convex portion 74 b of peripheral wall portion 74 is inserted into concave portion 68 b so that seal member 230 is accommodated in concave portion 68 b of peripheral wall portion 68. Thereby, the case member 54 and the case member 56 are combined in a watertight manner.

  Referring to FIGS. 4 and 5, second battery unit 64 is accommodated by case member 58 and case member 60. The peripheral wall portion 84 of the case member 58 and the peripheral wall portion 178 of the case member 60 are combined with each other with the annular seal member 232 interposed therebetween. More specifically, referring to FIG. 5, convex portion 84 b of peripheral wall portion 84 is inserted into concave portion 178 b so that sealing member 232 is accommodated in concave portion 178 b of peripheral wall portion 178. Thereby, the case member 58 and the case member 60 are combined in a watertight manner.

  Referring to FIG. 4, nuts 234a, 234b, 234c, and 234d are provided so as to be sandwiched between case member 56 and case member 58.

  The nut 234a is accommodated by the boss portion 80a of the case member 56 and the boss portion 98a of the case member 58, and the nut 234b is accommodated by the boss portion 80b of the case member 56 and the boss portion 98b of the case member 58. The boss 80a and the boss 98a are combined with each other with the annular seal member 236a interposed therebetween, and the boss 80b and the boss 98b are combined with each other with the annular seal member 236b interposed therebetween. Thereby, the boss part 80a and the boss part 98a are combined in a watertight manner, and the boss part 80b and the boss part 98b are combined in a watertight manner.

  The nuts 234 c and 234 d are accommodated by the connecting portion 78 of the case member 56 and the connecting portion 88 of the case member 58. The nut 234c is provided so as to be sandwiched between the boss part 80c and the boss part 98c, and the nut 234d is provided so as to be sandwiched between the boss part 80d and the boss part 98d.

  4 and 5, the connecting portion 76 of the case member 56 and the connecting portion 86 of the case member 58 are combined with each other with an annular seal member 238 interposed therebetween. More specifically, referring to FIG. 5, the convex portion 86 b of the coupling portion 86 is inserted into the concave portion 76 b so that the seal member 238 is accommodated in the concave portion 76 b of the coupling portion 76. Thereby, the connection part 76 and the connection part 86 are watertightly combined.

  Referring to FIGS. 4 and 5, connecting portion 78 of case member 56 and connecting portion 88 of case member 58 are combined with each other with annular seal member 240 interposed therebetween. More specifically, referring to FIG. 5, the convex portion 88 b of the coupling portion 88 is inserted into the concave portion 78 b so that the seal member 240 is accommodated in the concave portion 78 b of the coupling portion 78. Thereby, the connection part 78 and the connection part 88 are combined watertightly.

  Referring to FIG. 4, case 52 combined as described above is connected to first battery unit 62 and second battery unit 64 by a plurality of bolts 242.

  In this embodiment, four bolts 242 are inserted into the four boss portions 70 of the case member 54, the four boss portions 202 of the first battery unit 62, and the boss portions 80a, 80b, 80c, and 80d of the case member 56. It is. Similarly, four bolts 242 (only three bolts 242 are shown in FIG. 4) are provided for the four boss portions 180 of the case member 60, the four boss portions 202 of the second battery unit 64, and the case member 58. It is inserted into the bosses 98a, 98b, 98c, 98d. The front ends of the plurality of bolts 242 are fixed to nuts 234a, 234b, 234c, and 234d. Thereby, case 52, the 1st battery unit 62, and the 2nd battery unit 64 are connected. An annular seal member 244 is fitted into each boss portion 70 and each boss portion 180. Thereby, each boss part 70 and each boss part 180 are sealed with bolt 242 and seal member 244, respectively.

  FIG. 13 is an illustrative view showing an electric circuit of the battery pack 40.

  Referring to FIG. 13, as described above, the plurality of batteries 182 of the first battery unit 62 are electrically connected via the plurality of lead members 186, the lead members 188, the plurality of lead members 190, and the lead members 192. Has been. The plurality of batteries 182 of the second battery unit 64 are electrically connected via a plurality of lead members 186, a lead member 206, a plurality of lead members 190 and a lead member 192. The plurality of batteries 182 of the first battery unit 62 and the plurality of batteries 182 of the second battery unit 64 are electrically connected by a lead member 222, a lead member 224, and a plurality of lead members 228. The power supply terminal 118, the first battery unit 62, and the second battery unit 64 include a lead member 134, a connection terminal 140, a service plug 164 attachment / detachment portion 166, a connection terminal 146, a connection member 152, a lead member 158, and a connection member 214. It is electrically connected via. The power supply terminal 102 and the first battery unit 62 and the second battery unit 64 are electrically connected via a connection member 246. Therefore, in this embodiment, the lead members 134, 158, 186, 188, 190, 192, 206, 222, 224, 228, the connection terminals 140, 146, the connection members 152, 214, the detachable portion 166, and the connection member 246 are included. Thus, a lead portion L for electrically connecting the power terminal 102, the plurality of batteries 182 and the power terminal 118 is configured. In this embodiment, the connection member 246 includes a plurality of lead members, for example.

  In the battery pack 40, the electrical connection between the power supply terminal 102 and the power supply terminal 118 can be disconnected by removing the attaching / detaching portion 166 from the connection terminals 140 and 146, and power input / output from the power supply terminals 102 and 118 can be performed. Can be blocked. In this embodiment, the blocking part B is configured to include the connection terminals 140 and 146 and the attaching / detaching part 166.

  FIG. 14 is an illustrative view conceptually showing the structure of the battery pack 40.

  Referring to FIG. 14, in this embodiment, case member 54, case member 56 (more specifically, side wall portion 72, peripheral wall portion 74, connecting portion 78, and boss portions 80a and 80b), case member 58 ( More specifically, the side wall portion 82, the peripheral wall portion 84, the connecting portion 88, the boss portions 98a and 98b), and the case member 60 form the first storage chamber R1.

  Referring to FIG. 4, as described above, each boss portion 70 of case member 54 and each boss portion 180 of case member 60 are sealed by bolts 242 and seal member 244, respectively. The case member 54 and the case member 56 are combined in a watertight manner with the seal member 230 interposed therebetween. The case member 58 and the case member 60 are combined in a watertight manner with the seal member 232 interposed therebetween. The connecting portion 78 and the connecting portion 88 are combined in a watertight manner with the seal member 240 interposed therebetween. The boss portion 80a and the boss portion 98a are combined in a watertight manner with the seal member 236a interposed therebetween, and the boss portion 80b and the boss portion 98b are combined in a watertight manner with the seal member 236b interposed therebetween. With reference to FIG. 7, the through hole 84 d of the peripheral wall portion 84 is sealed by the seal member 100 and the power supply terminal 102. Referring to FIG. 8, the through hole 148 of the side wall 82 is sealed by the seal member 150, the connecting member 152, the fixing member 154, and the seal member 156. As a result, the first storage chamber R1 is watertight. Therefore, in this embodiment, the seal members 100, 150, 156, 230, 232, 236a, 236b, 240, 244, the power supply terminal 102, the connecting member 152, the fixing member 154, and the bolt 242 serve as the first storage chamber R1. It functions as a sealing part for watertightness.

  In this embodiment, the state in which the first storage chamber R1 is watertight means a state in which the intrusion of water from the outside of the first storage chamber R1 to the inside of the first storage chamber R1 is prevented.

  Referring to FIG. 14, in battery pack 40, a part of lead portion L, a plurality of batteries 182 of first battery unit 62 (see FIG. 12), and a plurality of batteries 182 of second battery unit 64 (see FIG. 12). ) Is accommodated in the first accommodating chamber R1, and the connection terminals 140 and 146 of the blocking portion B are accommodated in the second accommodating chamber R2.

Next, the function and effect of the battery pack 40 will be described.
In the battery pack 40, the input / output of power from the power supply terminal 102 and the power supply terminal 118 can be blocked by removing the detachable section 166 of the blocking section B from the connection terminals 140 and 146. Here, the connection terminals 140 and 148 are accommodated in the second accommodation chamber R2 having a drainage portion (the gap 112 in this embodiment). For this reason, for example, even when water enters the second storage chamber R2 when the detachable portion 166 (service plug 164) is removed from the battery pack 40, water is easily discharged from the drainage portion (gap 112). be able to. Furthermore, the plurality of batteries 182 of the first battery unit 62 and the second battery unit 64 are accommodated in the first accommodation chamber R1 that is watertight. In this case, even if water enters the second storage chamber R2, it is possible to prevent water from entering the first storage chamber R1, and thus it is possible to prevent water from adhering to the plurality of batteries 182. As a result of the above, it is possible to ensure excellent waterproofness of the battery pack 40, and it is easy to handle the battery pack 40 even under conditions where it is covered with water.

  In the battery pack 40, the connection terminals 168 and 170 of the attaching / detaching portion 166 can be inserted into the second accommodating chamber R2 from the outside of the second accommodating chamber R2 through the insertion portion 162. Thereby, removal of the attachment / detachment part 166 becomes easy.

  In the battery pack 40, the plug-in portion 162 is configured to pass the connection terminals 168 and 170 but not the main body portion 172. In this case, since the insertion part 162 should just be able to let the connection terminals 168 and 170 pass at least, the insertion part 162 can be comprised small. Thereby, it can suppress that water permeates into 2nd storage chamber R2 from the insertion part 162. FIG.

  In the battery pack 40, the insertion part 162 has a through hole 162a into which the connection terminals 168 and 170 can be inserted, and a through hole 162b into which the connection terminals 168 and 170 can be inserted. Here, the through hole 162a only needs to have a size that allows the connection terminals 168 and 170 to pass therethrough, and the through hole 162b has a size that allows the connection terminals 168 and 170 to pass therethrough. Good. In this case, by forming the through holes 162a and 162b as small as possible while ensuring a necessary and sufficient size, it is possible to sufficiently prevent water from entering the second storage chamber R2 from the through holes 162a and 162b.

  In the battery pack 40, the connection portion between the connection terminal 146 and the connection terminal 170 and the connection portion between the connection terminal 140 and the connection terminal 168 are separated from the inner surface 114 of the second storage chamber R2. Thereby, even when water permeates into the second storage chamber R2, it is possible to suppress water from adhering to the connection portion between the connection terminal 146 and the connection terminal 170 and the connection portion between the connection terminal 140 and the connection terminal 168.

  In the battery pack 40, the drainage portion (gap 112) is provided so as to open at a corner portion (for example, the corner portion 174 shown in FIG. 11) of the second storage chamber R2. In this case, even when water enters the second storage chamber R2 from the insertion portion 162, the water can be efficiently discharged from the drainage portion (gap 112).

  In the battery pack 40, by combining the case members 54, 56, 58, and 60 with the plurality of seal members 230, 232, 236a, 236b, and 240 interposed therebetween, the first storage chamber R1 can be made watertight with a simple configuration. it can.

  In the battery pack 40, since the detachable portion 166 includes a fuse, it is not necessary to further provide another fuse for preventing overcurrent. Thereby, the structure of the battery pack 40 can be simplified. Further, the fuse can be easily replaced by removing the attaching / detaching portion 166 (service plug 164) from the connection terminals 140 and 146. Thereby, the maintenance of the battery pack 40 is facilitated.

  In the battery pack 40, the connection terminals 140 and 146 are fixed to the case member 58 in the second storage chamber R2. Thereby, the positioning accuracy of the connection terminals 140 and 146 can be improved.

  FIG. 15 is a perspective view showing a battery pack 40a according to another embodiment of the present invention, and FIG. 16 is a cross-sectional view showing the structure around the second storage chamber R21 of the battery pack 40a.

  Referring to FIGS. 15 and 16, battery pack 40 a includes case 52 a, first battery unit 62 (see FIG. 4), and second battery unit 64. The case 52a includes a case member 54, a case member 56, a case member 58a, and a case member 60. The first battery unit 62 is accommodated by the case member 54 and the case member 56, and the second battery unit 64 is accommodated by the case member 58 a and the case member 60.

  Referring to FIG. 16, case member 58 a has a side wall portion 248 and a peripheral wall portion 250. The side wall part 248 has the recessed part 252 dented toward the case member 60 side. The lid member 108 a is provided such that a gap 112 a is formed between the peripheral wall portion 250 and the recess 252. In this embodiment, the second storage chamber R21 is formed by the concave portion 252 of the side wall portion 248, the peripheral wall portion 250, and the lid member 108a. Further, in this embodiment, the gap 112a corresponds to the drainage portion.

  In this embodiment, the case member 54, the case member 56 (more specifically, the side wall portion 72, the peripheral wall portion 74, the connecting portion 78, and the boss portions 80a and 80b (see FIG. 4)), the case member 58a (more specific). Specifically, the side wall portion 248, the peripheral wall portion 250, the connecting portion 88, the boss portions 98a and 98b (see FIG. 4), and the case member 60 form the first storage chamber R11. The first storage chamber R11 is watertight by the same configuration as the first storage chamber R1 of the battery pack 40.

  The connecting member 152 and the connecting member 214 are electrically connected via the lead member 254. Thereby, the connection terminal 146 and the plurality of batteries 182 are electrically connected.

  In addition, although detailed description is abbreviate | omitted, the attaching part 96 and the insertion part 162 are provided in the position corresponding to 2nd storage chamber R21. Further, each component (such as the lead member 134 and the connection terminal 140) disposed in the second housing chamber R2 of the battery pack 40 is disposed at an appropriate position according to the configuration of the second housing chamber R21, and is necessary. In some cases, the design is changed. Further, other components of the battery pack 40 (the power supply terminals 102 and 118, the connecting unit 220, etc.) are also arranged at appropriate positions according to the configuration of the case 52a, and the design is changed and used when necessary. .

  With the above-described configuration, the battery pack 40a can obtain the same effects as those of the battery pack 40 described above.

  FIG. 17 is a perspective view showing a battery pack 40b according to still another embodiment of the present invention, and FIG. 18 is a cross-sectional view showing a structure around the second storage chamber R22 of the battery pack 40b.

  Referring to FIGS. 17 and 18, battery pack 40b includes a case 52b, a first battery unit (not shown), and a second battery unit 64b. Case 52b includes case member 54b, case member 56b, case member 58b, and case member 60b. The first battery unit is accommodated by the case member 54b and the case member 56b, and the second battery unit 64b is accommodated by the case member 58b and the case member 60b.

  Although detailed description is omitted, the case member 54b has substantially the same configuration as the case member 54 except that the length in the X direction is long, and the case member 56b has a long point in the X direction. Except for this, it has substantially the same configuration as the case member 56. The case member 58b is a case member except that the length in the X direction is long, the protective wall 90 (see FIG. 6) is not provided, and the mounting portion 96 (see FIG. 6) is not provided. 58 and substantially the same configuration.

  Referring to FIG. 18, case member 60 b has a side wall portion 256 and a peripheral wall portion 258. The side wall part 256 has the recessed part 260 dented toward the case member 58b side. A lid member 262 is provided so as to close the opening 260 a of the recess 260. The lid member 262 has a plate-like portion 262a and an attachment portion 262b. The plate-like portion 262a has an insertion portion 264 having a configuration similar to that of the insertion portion 162 (see FIG. 9). The attachment portion 262b has a configuration similar to that of the attachment portion 96 (see FIG. 6). The lid member 262 is provided such that a gap 112b is formed between the plate-like portion 262a and the concave portion 260. In this embodiment, the second storage chamber R22 is formed by the recess 260 and the plate-like portion 262a. Further, in this embodiment, the gap 112b corresponds to the drainage portion.

  The recess 260 has a through hole 260b provided to extend in the X direction. In a state where the annular seal member 266 is fitted in the through hole 260b, one end portion of the cylindrical connecting member 268 is fitted into the through hole 260b. The connecting member 268 is provided so as to extend in the X direction. The connecting member 268 is made of a conductive material.

  One end of the connecting member 268 is fixed to the recess 260 together with one end of the hollow disk-shaped sealing member 272 and the plate-shaped lead member 274 by the fixing member 270. In this embodiment, at least one of the fixing member 270 and the seal member 272 is made of a conductive material. The through hole 260 b is sealed by the seal member 266, the connecting member 268, the fixing member 270, and the seal member 272.

  The connection terminal 146 is fixed to the other end of the connecting member 268 by a fixing member 276. A lead member 206 is connected to the other end of the lead member 274. Thereby, the connection terminal 146 and the plurality of batteries 182 are electrically connected via the connecting member 268, the lead member 274, and the lead member 206.

  In this embodiment, similarly to the first storage chambers R1 and R11 described above, the first storage chamber R12 is formed by predetermined components of the case member 54b, the case member 56b, the case member 58b, and the case member 60b. The first storage chamber R12 is water-tight like the first storage chambers R1 and R11.

  Although detailed description is omitted, the first battery unit 62 can be used as the first battery unit of the battery pack 40b by appropriately changing the design according to the configuration of the case members 54b and 56b. The second battery unit 64b is obtained by appropriately changing the design of the second battery unit 64 according to the configuration of the case members 58b and 60b. Further, other components of the battery pack 40 (the power supply terminals 102 and 118, the connection unit 220, etc.) are also arranged at appropriate positions according to the configuration of the case 52b, and the design is changed and used when necessary. .

  With the configuration as described above, the same effect as the above-described operation effect of the battery pack 40 can be obtained also in the battery pack 40b.

  FIG. 19 is a perspective view showing a battery pack 40c according to another embodiment of the present invention, and FIG. 20 is a cross-sectional view showing a structure around the second storage chamber R23 of the battery pack 40c.

  Referring to FIGS. 19 and 20, battery pack 40c includes a case 52c, a first battery unit (not shown), and a second battery unit 64c. As a 1st battery unit, the thing similar to the 1st battery unit of the battery pack 40b can be used.

  The case 52c includes a case member 54b, a case member 56b, a case member 58b, and a case member 60c. The first battery unit is accommodated by the case member 54b and the case member 56b, and the second battery unit 64c is accommodated by the case member 58b and the case member 60c.

  Referring to FIG. 20, case member 60 c is different from case member 60 b (see FIG. 18) in that side wall portion 278 is provided instead of side wall portion 256. The side wall portion 278 is different from the side wall portion 256 in that a concave portion 280 is provided instead of the concave portion 260.

  In the battery pack 40c, a lid member 262 is provided so as to close the opening 280a of the recess 280. The lid member 262 is provided such that a gap 112c is formed between the plate-like portion 262a and the recess 280. In this embodiment, the second storage chamber R23 is formed by the recess 280 and the plate-like portion 262a. Further, in this embodiment, the gap 112c corresponds to the drainage portion.

  The recess 280 has a through hole 280b provided to extend in the Z direction. In a state where the annular seal member 282 is fitted in the through hole 280b, one end portion of the cylindrical connecting member 284 is fitted into the through hole 280b. The connecting member 284 is provided so as to extend in the Z direction. The connecting member 284 is made of a conductive material.

  One end of the connecting member 284 is fixed to the recess 280 by the fixing member 286 together with one end of the hollow disk-shaped sealing member 288 and the plate-shaped lead member 290. In this embodiment, at least one of the fixing member 286 and the seal member 288 is made of a conductive material. The through hole 280b is sealed by a seal member 282, a connecting member 284, a fixing member 286, and a seal member 288.

  A connection terminal 294 is fixed to the other end of the connecting member 284 by a fixing member 292. The connection terminal 294 is configured such that the attachment / detachment portion 166 of the service plug 164 is attachable / detachable. One end of a lead member 296 is connected to the other end of the lead member 290. The other end of the lead member 296 is connected to the plurality of batteries 182 in the first row of the second battery unit 64c. Thereby, the connection terminal 294 and the plurality of batteries 182 are electrically connected via the connecting member 284, the lead member 290, and the lead member 296.

  In this embodiment, similarly to the first storage chambers R1, R11, R12 described above, the first storage chamber R13 is formed by predetermined components of the case member 54b, the case member 56b, the case member 58b, and the case member 60c. . The first storage chamber R13 is water-tight like the first storage chambers R1, R11, R12.

  Although the detailed description is omitted, the second battery unit 64c is obtained by appropriately changing the design of the second battery unit 64 according to the configuration of the case members 58b and 60c. Further, the other constituent elements of the battery pack 40 are also arranged at appropriate positions according to the configuration of the case 52c, and the design is changed and used when necessary.

  With the above-described configuration, the battery pack 40c can obtain the same effects as the above-described functions and effects of the battery pack 40.

  In the above-described embodiment, the case where the gaps 112, 112a, 112b, and 112c are provided as the drainage portion has been described, but the configuration of the drainage portion is not limited to the above example.

  FIG. 21 is a cross-sectional view showing the structure around the second storage chamber R24 of the battery pack 40d according to yet another embodiment of the present invention.

  The battery pack 40d shown in FIG. 21 is different from the battery pack 40 described above in that a protective wall portion 298 is provided instead of the protective wall portion 90, and a lid member 300 is provided instead of the lid member 108. It is a point.

  The protection wall 298 is different from the protection wall 90 in that a wall 298a is provided instead of the fifth wall 90e. The wall part 298a is different from the fifth wall part 90e in that it has a notch part 298b at its end part (end part in the Z direction). The lid member 300 is different from the lid member 108 in that the lid member 300 has a notch 300a at its end (end in the X direction). The notch 298b and the notch 300a are formed so as to open at the corner 302 (the corner formed by the inner surface 298c and the inner surface 300b) of the second storage chamber R24. The lid member 300 is provided such that a gap 112d is formed.

  In the battery pack 40d, in addition to the gap 112d, the notch 298b and the notch 300a can be used as a drainage part. Thereby, even if water permeates into the second storage chamber R24, the water can be efficiently discharged through the drainage part (the gap 112d, the notch part 298b, and the notch part 300a). Note that one of the notch 298b and the notch 300a may not be provided. Further, in the case where at least one of the notch 298b and the notch 300a is provided, the gap 112d may not be formed. A through hole may be formed instead of the notch 298b, and a through hole may be formed instead of the notch 300a. Also in the battery packs of the types shown in the battery pack 40a, the battery pack 40b, and the battery pack 40c, a cutout portion or a through hole as a drainage portion may be formed in the lid member.

  In the above-described embodiment, the first battery unit and the second battery unit are electrically connected in parallel. However, the first battery unit and the second battery unit may be electrically connected in series.

  In the above-described embodiment, the case where the blocking portion is provided between the negative power supply terminal and the second battery unit in the lead portion has been described, but the position of the blocking portion is not limited to the above example. For example, in the lead portion, a blocking portion may be provided between the positive power supply terminal and the second battery unit. For example, when the first battery unit and the second battery unit are electrically connected in series, a blocking portion may be provided between the first battery unit and the second battery unit in the lead portion.

  In the above-described embodiment, the case where a plate-like lead member is used has been described, but a lead wire may be used as the lead member.

  In the above-described embodiment, the main body 172 of the detachable portion 166 includes a fuse, but the detachable portion may not include a fuse. For example, the main body portion of the detachable portion may be a lead member (such as a lead wire or a lead plate).

  In the above-described embodiment, the case where one positive power supply terminal and one negative power supply terminal are provided has been described. However, the number of power supply terminals is not limited to the above example. For example, two positive power terminals may be provided (for example, a power terminal for charging and a power terminal for discharging). In this case, each power supply terminal is provided on the case member together with the seal member, for example, similarly to the power supply terminal 102 described above.

  In the above-described embodiment, the first storage chamber is water-tight using a plurality of seal members, but the method of water-tightening the first storage chamber is not limited to the above example. For example, the first storage chamber may be watertight by welding the structural members together. Specifically, for example, the case member 54 and the case member 56 may be welded, the case member 56 and the case member 58 may be welded, or the case member 58 and the case member 60 may be welded. Good.

  The straddle-type vehicle to which the present invention is applied is not limited to the scooter 10. Specifically, the present invention can also be applied to other types of motorcycles such as mopeds, vehicles for rough terrain travel (ALL-TERRAIN VEHICLE), and other straddle-type vehicles such as snowmobiles.

10 Scooter 40a, 40b, 40c, 40d Battery pack 52, 52a, 52b, 52c Case 54, 54b, 56, 56b, 58, 58a, 58b, 60, 60b, 60c Case member 102, 118 Power supply terminal 112, 112a, 112b 112c, 112d Clearance 114 Inner surface 114a, 114b, 114c, 114d, 114e, 114f, 114g, 114h, 298c, 300b Inner surface portion 140, 146, 168, 170, 294 Connection terminal 162 Insertion portion 162a, 162b Through hole 164 Service Plug 166 Detachable part 172 Main body part 182 Battery 230, 232, 236a, 236b, 238, 240 Seal member 298b, 300a Notch part B Blocking part L Lead part R1, R11, R12, R13 First storage chamber R2, R21 , R22, R23, R24 Second storage chamber

Claims (9)

Case and
A plurality of rechargeable batteries housed in the case;
A positive first power supply terminal and a negative second power supply terminal provided so as to be exposed to the outside of the case;
A lead portion that electrically connects the first power supply terminal, the plurality of batteries, and the second power supply terminal;
The lead portion includes a blocking portion that cuts off an electrical connection between the first power supply terminal and the second power supply terminal and blocks power input and output from the first power supply terminal and the second power supply terminal. ,
The blocking portion includes a first connection terminal electrically connected to the first power supply terminal, a second connection terminal electrically connected to the second power supply terminal, and the first connection terminal and the second connection. It has a detachable part that can be attached to and detached from the terminal,
The case includes a first storage chamber that is watertight and a second storage chamber that has a drainage portion for discharging water,
At least a part of the lead portion and the plurality of batteries are accommodated in the first accommodation chamber, the first connection terminal and the second connection terminal are accommodated in the second accommodation chamber ,
The drainage portion is provided so that water can be discharged from the second storage chamber in a state where the detachable portion is connected to the first connection terminal and the second connection terminal,
By connecting the detachable part to the first connection terminal and the second connection terminal, the first connection terminal and the second connection terminal are electrically connected via the detachable part, The battery pack is configured such that electrical connection between the first connection terminal and the second connection terminal is disconnected by removing the detachable portion from the first connection terminal and the second connection terminal . The attachment / detachment portion includes a third connection terminal provided detachably with respect to the first connection terminal and a fourth connection terminal provided detachably with respect to the second connection terminal,
The battery pack according to claim 1, wherein the second storage chamber has an insertion portion for inserting the third connection terminal and the fourth connection terminal. The detachable portion further includes a main body portion that electrically connects the third connection terminal and the fourth connection terminal,
The battery pack according to claim 2, wherein the insertion portion passes the third connection terminal and the fourth connection terminal but does not pass the main body portion.   The battery pack according to claim 3, wherein the insertion portion includes a first hole portion into which the third connection terminal can be inserted and a second hole portion into which the fourth connection terminal can be inserted. The first connection terminal and the third connection terminal are connected at a position away from the inner surface of the second storage chamber,
The battery pack according to claim 2, wherein the second connection terminal and the fourth connection terminal are connected at a position away from the inner surface of the second storage chamber. The inner surface of the second storage chamber has a plurality of inner surface portions,
The insertion portion is opened in any one of the plurality of inner surface portions,
The battery pack according to claim 5, wherein the drainage portion opens at a corner portion formed by at least two inner surface portions of the plurality of inner surface portions. One or more sealing members,
The case includes a plurality of case members,
The battery pack according to any one of claims 1 to 6, wherein the plurality of case members are combined with each other with the one or more seal members interposed therebetween so that the first storage chamber is formed.   The battery pack according to claim 1, wherein the detachable portion includes a fuse.   A straddle-type vehicle comprising the battery pack according to any one of claims 1 to 6.

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