Mobile battery

Abstract

To provide a mobile battery that can change its form depending on the usage situation.SOLUTION: A mobile battery 5 includes a battery body 30 that has a built-in battery cell and is formed in a columnar shape. One of a plurality of types of first attachments can be selectively attached to a first end face 31 of the battery body 30 in the column axis direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a mobile battery. [Background technology]

[0002] It is becoming common to use electronic devices in work spaces such as offices and public facilities. For this reason, it is desirable that the fixtures used in the work space also be capable of supplying power to the electronic devices.

[0003] However, when power is supplied to fixtures from power outlets installed on the walls or floors of the office area, the power outlets and the fixtures must be connected with a wiring cable. This means that when you want to move the fixtures to a desired location within the office area, you have to plug and unplug the wiring cable, and the length of the wiring cable limits the flexibility of placement. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7244261 Summary of the Invention [Problem to be solved by the invention]

[0005] In response to these issues, a method of using large-capacity mobile batteries to power electronic devices has been adopted. However, conventional mobile batteries are limited to one type, making it difficult to adapt to various usage situations.

[0006] Therefore, the present invention provides a mobile battery whose form can be changed depending on the usage situation. [Means for solving the problem]

[0007] A mobile battery according to a first aspect of the present invention comprises a battery body formed in a columnar shape and incorporating a battery cell, and one of a plurality of types of first attachments can be selectively attached to the end face of the battery body on a first side in the column axis direction.

[0008] According to the first aspect, the first attachment to be attached to the battery body can be selected depending on the situation in which the mobile battery is used. Moreover, since the first attachment is attached to the end face of the battery body, the mobile battery takes on a shape that is like an extension of the columnar battery body. Therefore, unlike a configuration in which an attachment is attached to the side of the battery body, the first attachment can be attached without disrupting the design of the battery body, and when the mobile battery is installed with the column axis direction aligned vertically, the expansion of the horizontal space occupied by the mobile battery can be suppressed. As a result, a mobile battery whose shape can be changed depending on the situation in which it is used can be provided.

[0009] A mobile battery according to a second aspect of the present invention may be a mobile battery according to the first aspect, wherein one of a plurality of types of second attachments can be selectively attached to the end face of the battery body on the second side in the column axis direction.

[0010] According to the second aspect, in addition to the first attachment, a second attachment that can be attached to the battery body can also be selected, thereby increasing the number of forms of the mobile battery that can be changed depending on the usage situation.

[0011] A mobile battery according to a third aspect of the present invention is a mobile battery according to the first or second aspect above, wherein a port for outputting power may be provided on the side of the battery body.

[0012] According to the third aspect, power can be supplied to an external device regardless of the type of the selected first attachment, thereby providing a highly convenient mobile battery.

[0013] A mobile battery according to a fourth aspect of the present invention is a mobile battery according to the third aspect, wherein the port is provided at a position offset from the center of the column axis direction of the battery body.

[0014] According to the fourth aspect, by selecting the orientation in which the mobile battery stands upright, the port can be positioned close to the surface on which the mobile battery is placed. This makes it difficult for the force of inserting or removing a plug into the port to act as a moment on the standing mobile battery, thereby preventing the mobile battery from tipping over. Therefore, a highly convenient mobile battery can be provided.

[0015] A mobile battery according to a fifth aspect of the present invention is a mobile battery according to any one of the first to fourth aspects above, wherein the first attachment may have an outer surface flush with the side of the battery body.

[0016] According to the fifth aspect, since no step is formed between the battery body and the first attachment, a mobile battery with a unified appearance can be provided.

[0017] A mobile battery according to a sixth aspect of the present invention is the mobile battery according to the second aspect above, wherein the first attachment may be attachable to the second side end surface of the battery body.

[0018] According to the sixth aspect, the number of locations to which the first attachment can be attached increases, thereby increasing the number of configurations of the mobile battery that can be changed depending on the usage situation. [Effects of the Invention]

[0019] According to the present invention, it is possible to provide a mobile battery that can change its form depending on the usage situation. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is an oblique view showing one form of a mobile battery according to an embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the mobile battery shown in FIG. 1. [Figure 3] FIG. 2 is a diagram showing a combination of a battery main body and a charger. [Figure 4] An oblique view showing another form of the mobile battery of the embodiment. [Figure 5] An oblique view showing another form of the mobile battery of the embodiment. [Figure 6] An oblique view showing another form of the mobile battery of the embodiment. [Figure 7] An oblique view showing another form of the mobile battery of the embodiment. [Figure 8] An oblique view showing another form of the mobile battery of the embodiment. [Figure 9] FIG. 2 is a perspective view showing a mobile unit and fixtures according to an embodiment. [Figure 10] This is an oblique view showing an example of a combination of a mobile battery and a fixture. [Figure 11] An oblique view showing another example of a combination of a mobile battery and a fixture. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, a mobile battery according to an embodiment of the present invention will be described with reference to the drawings. In the following description, components having the same or similar functions will be designated by the same reference numerals. Furthermore, duplicate descriptions of those components may be omitted.

[0022] 1 is a perspective view showing one form of a mobile battery according to an embodiment, and FIG. 2 is an exploded perspective view of the mobile battery shown in FIG. 1 and 2, the mobile battery 5 includes a battery body 30 that contains a battery cell, and an upper attachment 50 and a lower attachment 80 that are detachable from the battery body 30. The battery cell is, for example, a rechargeable lithium battery.

[0023] The battery body 30 is formed in a columnar shape. The column axis direction coincides with the up-down direction when the mobile battery 5 is in use. The battery body 30 is formed in a quadrangular column shape. The battery body 30 has a square cross section. The battery body 30 has a first end face 31 and a second end face 32 facing in the column axis direction, and a side face 33 facing in a direction perpendicular to the column axis direction. The first end face 31 and the second end face 32 are formed to be approximately the same shape and size as each other when viewed in the column axis direction.

[0024] A side port 36 (port) is provided on one side surface 33 of the battery main body 30. The side port 36 is a port that outputs power charged in the battery cell. For example, the side port 36 is a USB (Universal Serial Bus) port. The battery main body 30 can supply power to an external device via a cable connected to the side port 36. The side port 36 may also be a charging port that inputs power to the battery main body 30. The side port 36 is provided at a position of the battery main body 30 that is offset from the center of the column axis direction. In this embodiment, the side port 36 is provided at the end of the battery main body 30 on the first end surface 31 side.

[0025] FIG. 3 is a diagram showing a combination of a battery main body and a charger. As shown in FIG. 3, the battery main body 30 can be connected to a charger 7. In this case, an input terminal is provided on the first end surface 31. The charger 7 charges the battery main body 30 with power from an external power source. The charger 7 has a connection terminal 9 connected to the input terminal of the battery main body 30. By placing the battery main body 30 on the charger 7 with the first end surface 31 facing downward, the connection terminal 9 of the charger 7 and the input terminal of the battery main body 30 are connected, and the battery cells are charged.

[0026] The battery main body 30 may be connectable to a power supply. The power supply outputs the power stored in the battery main body 30 to an external device. The power supply includes an inverter that converts the direct current output from the battery main body 30 into alternating current, and a power tap that can extract the power converted into alternating current by the inverter. The battery main body 30 includes an output terminal on the first end surface 31 that is connected to the connection terminal of the power supply. The output terminal may also be used as the input terminal. The power supply includes a connection terminal that is connected to the output terminal of the battery main body 30. By placing the battery main body 30 on the power supply with the first end surface 31 facing downward, the connection terminal of the power supply and the output terminal of the battery main body 30 are connected, and the power output from the battery cells can be extracted from the power tap.

[0027] 4 to 8 are perspective views showing other forms of the mobile battery according to the embodiment. 1 and 4 to 8, one of a plurality of types of upper attachments 50 or one of a plurality of types of lower attachments 80 can be selectively attached to each of the first end surface 31 and the second end surface 32 of the battery main body 30. The upper attachment 50 and the lower attachment 80 add additional functions to the battery main body 30. In the following description, when there is no need to distinguish between the upper attachment 50 and the lower attachment 80, they will simply be referred to as attachments.

[0028] The upper attachment 50 is attached to the battery main body 30, and is disposed so as to cover the first end surface 31 or the second end surface 32 of the battery main body 30, thereby forming one end of the mobile battery 5. Each upper attachment 50 has a connection surface 51 facing the first end surface 31 or the second end surface 32, and an attachment side surface 52 (outer surface) extending from the outer periphery of the connection surface 51 in a direction away from the battery main body 30. The attachment side surface 52 extends in a direction away from the battery main body 30 from the boundary between the battery main body 30 and the upper attachment 50 on the exterior of the mobile battery 5. The attachment side surface 52 is formed flush with the side surface 33 of the battery main body 30 along its entire periphery. In this embodiment, being flush means that the two surfaces are adjacent to each other so as to form a continuous flat or curved surface with substantially no steps. The lower attachment 80 is attached to the battery body 30 and is arranged to cover the first end surface 31 or the second end surface 32 of the battery body 30, forming the other end of the mobile battery 5. Each lower attachment 80 has a connection surface 81 facing the first end surface 31 or the second end surface 32.

[0029] As shown in FIG. 1 , one example of the upper attachment 50 is a first cap body 50A with a handle. The first cap body 50A includes a cap body 54 detachably connected to at least one of the first end face 31 and the second end face 32 (both in this embodiment), and a handle 56 protruding from the cap body 54. The cap body 54 has a connection face 51, an attachment side face 52, and an outer end face 55 facing the opposite side from the connection face 51. When viewed from the column axis direction, the connection face 51 is formed to have approximately the same shape and size as the end face of the first end face 31 or the second end face 32 that is connected to the cap body 54 (the first end face 31 in the illustrated example). The outer end face 55 is formed to have approximately the same shape and size as the connection face 51 when viewed from the column axis direction. The attachment side face 52 extends from the outer peripheral edge of the connection face 51 in the column axis direction and connects to the outer peripheral edge of the outer end face 55. The handle 56 is connected to a corner of the outer end face 55. The handle 56 is a loop-shaped tab made of a flexible material. The first cap body 50A has an additional function for the battery body 30, and is provided with a portion that can be easily grasped by an operator.

[0030] 4, another example of the upper attachment 50 is a second cap body 50B with a handle. The second cap body 50B includes a cap body 54 that is substantially the same as the cap body 54 of the first cap body 50A, and a handle 57 that protrudes from the cap body 54. The handle 57 is a hard member that extends in a J-shape and has one end connected to the cap body 54. The second cap body 50B has an additional function for the battery body 30, in that it is provided with a portion that is easy for an operator to grasp.

[0031] 5, another example of the upper attachment 50 is a third cap body 50C with a handle. The third cap body 50C includes a cap body 54 that is substantially identical to the cap body 54 of the first cap body 50A, and a handle 58 that protrudes from the cap body 54. The handle 58 is a hard member that extends in a U-shape and has both ends connected to the cap body 54. The third cap body 50C has an additional function for the battery body 30, in that it is provided with a portion that is easy for an operator to grasp.

[0032] As shown in FIG. 6, another example of the upper attachment 50 is an illumination part 50D. The illumination part 50D is detachably connected to the first end face 31. The illumination part 50D has a light source that emits light using the output of the battery main body 30. This gives the illumination part 50D an additional function of providing illumination to the battery main body 30. The illumination part 50D has an exterior body 60 that incorporates a light source and has at least a portion that is translucent. The exterior body 60 has a connection surface 51 and an attachment side surface 52. The connection surface 51 is formed to be approximately the same shape and size as the first end face 31 when viewed from the column axis direction. The attachment side surface 52 extends in the column axis direction.

[0033] As shown in FIG. 7 , another example of the upper attachment 50 is a power supply part 50E having an additional port 63. The power supply part 50E is detachably connected to the first end face 31. The power supply part 50E includes a main body 62 provided with the additional port 63. The main body 62 has a connection surface 51, an attachment side surface 52, and an outer end surface 64 facing the opposite side from the connection surface 51. The connection surface 51 is formed to have substantially the same shape and size as the first end face 31 when viewed from the column axis direction. The outer end surface 64 is formed to have substantially the same shape and size as the connection surface 51 when viewed from the column axis direction. The attachment side surface 52 extends in the column axis direction and is connected to the outer peripheral edge of the outer end surface 64.

[0034] An additional port 63 is provided on the outer end surface 64. In this embodiment, a recess 64a is formed on the outer end surface 64, and the additional port 63 is provided at the bottom of the recess 64a. The additional port 63 is a port that outputs power charged in the battery cell. That is, the power supply part 50E adds a terminal to be connected to an external device as an additional function to the battery main body 30. For example, the additional port 63 is a USB port. The mobile battery 5 having the power supply part 50E can supply power to an external device via a cable connected to the additional port 63. The additional port 63 may also be a charging port that inputs power to the battery main body 30.

[0035] A lid 65 that closes the additional port 63 is connected to the main body 62. The lid 65 is provided so as to cover substantially the entire outer end face 64, and is connected to the main body 62 so as to be able to open and close. The lid 65 is engaged with the main body 62 in a state in which the additional port 63 is closed. In this embodiment, the lid 65 has, on its inner surface facing the outer end face 64, a protrusion 65a that fits into a recess 64a in the outer end face 64. The lid 65 is engaged with the main body 62 by press-fitting the protrusion 65a into the recess 64a.

[0036] Alternatively, the upper attachment 50 may be a blower fan, a portable charger (such as a solar power generation unit or a hand-crank generator), a radio, or a part for placing items. When the upper attachment 50 is an electrical part that receives power from or supplies power to the battery main body 30, such as a lighting part 50D or a power supply part 50E, terminals that are electrically connected to each other are formed on the first end surface 31 of the battery main body 30 and the connection surface 51 of the upper attachment 50. The terminals formed on the first end surface 31 of the battery main body 30 may be input terminals connected to the charger 7, or may be provided separately from the input terminals. Note that by providing terminals on the second end surface 32 that are connected to terminals of electrical parts, the upper attachment 50, which is an electrical part, can be attached to the second end surface 32.

[0037] As shown in FIG. 1 , an example of the lower attachment 80 is a cap body 80A. The cap body 80A is detachably connected to at least one of the first end face 31 and the second end face 32 (both in this embodiment). The cap body 80A has a connection surface 81. When viewed from the column axis direction, the connection surface 81 is formed to have substantially the same shape and size as the end face (the second end face 32 in the illustrated example) of the first end face 31 or the second end face 32 that is connected to the cap body 80A. The cap body 80A adds a function to protect the end faces 31 and 32 of the battery body 30 as an additional function for the battery body 30. The cap body 80A can cover the input terminal connected to the charger 7 provided on the first end face 31. The cap body 80A may be waterproof. In this case, the cap body 80A, when connected to the first end face 31, prevents the input terminal from being exposed to the outside of the mobile battery 5.

[0038] As shown in FIG. 8 , another example of the lower attachment 80 is a stabilizing leg 80B. The stabilizing leg 80B includes a connection portion 83 that is detachably connected to at least one of the first end face 31 and the second end face 32 (both in this embodiment), and a leg portion 84 that projects outward from the connection portion 83 when viewed from the column axis direction and comes into contact with the installation surface. The connection portion 83 has a connection surface 81. When viewed from the column axis direction, the connection surface 81 is formed to have substantially the same shape and size as the end face (second end face 32 in the illustrated example) of the first end face 31 or the second end face 32 that is connected to the connection portion 83. The leg portion 84 is formed in a flat plate shape that is larger than the battery main body 30 when viewed from the column axis direction. The stabilizing leg 80B has a grounding portion that stabilizes the self-standing state of the mobile battery 5, as an additional function for the battery main body 30. It is desirable that the stabilizing leg 80B be connectable to the end face (first end face 31 in this embodiment) of the first end face 31 and the second end face 32 that is closer to the side port 36. The stabilizing leg 80B may be waterproof, similar to the cap body 80A.

[0039] Here, the upper attachment 50 and the lower attachment 80 that can be connected to the first end surface 31 will be referred to as the first attachment. Furthermore, the upper attachment 50 and the lower attachment 80 that can be connected to the second end surface 32 will be referred to as the second attachment. The first attachment and the second attachment may overlap each other. In this embodiment, the first attachment includes the cap bodies 50A, 50B, and 50C with handles of the upper attachment 50, the lighting part 50D, and the power supply part 50E, and the cap body 80A and the stabilizing legs 80B of the lower attachment 80. In this embodiment, the second attachment includes the cap bodies 50A, 50B, and 50C with handles of the upper attachment 50, and the cap body 80A and the stabilizing legs 80B of the lower attachment 80.

[0040] The first attachment is connected to the battery body 30 by a first connection structure. The first connection structure has a battery-side connection portion provided on the battery body 30 and an attachment-side connection portion provided on the first attachment that engages with the battery-side connection portion. For example, the first connection structure is a press-fit structure formed by a concave-convex shape formed on the first end surface 31 of the battery body 30 and a concave-convex shape formed on the connection surface of the first attachment. For example, the first connection structure is a fitting structure (such as a snap fit) between the battery body 30 and the first attachment. For example, the first connection structure is a magnetic attraction structure.

[0041] The second attachment is connected to the battery body 30 by a second connection structure. The second connection structure has a battery-side connection portion provided on the battery body 30 and an attachment-side connection portion provided on the second attachment that engages with the battery-side connection portion. For example, the second connection structure is a press-fit structure formed by a concave-convex shape formed on the second end surface 32 of the battery body 30 and a concave-convex shape formed on the connection surface of the second attachment. For example, the second connection structure is a fitting structure (such as a snap fit) between the battery body 30 and the second attachment. For example, the second connection structure is a magnetic attraction structure.

[0042] The first connection structure and the second connection structure may be the same structure. This allows the first attachment to be connectable to the second end surface 32, and the second attachment to be connectable to the first end surface 31. However, the first connection structure and the second connection structure may be different structures. This may prevent incorrect assembly of the battery main body 30 and the attachment.

[0043] A method of using the mobile battery 5 of this embodiment will be described. FIG. 9 is a perspective view showing the mobile unit and the fixture according to the embodiment. As shown in FIG. 9 , for example, the mobile battery 5 is used in combination with a furniture fixture with a top. Furniture fixture 2 is an example of a furniture fixture with a top, and is a table or desk installed in offices, public facilities, schools, etc. Furniture fixture 2 has a top 10 and a support structure 20 that is disposed on the floor and supports the top 10. The top 10 has a lower surface facing downward and an upper surface 11 facing upward. The lower surface and the upper surface 11 each extend horizontally. The lower surface is supported by the support structure 20. The upper surface 11 is a work surface on which items can be placed. The support structure 20 has multiple legs 21 (four in the illustrated example). The legs 21 are connected to the four corners of the top 10 in a one-to-one relationship. The legs 21 extend downward from the corners of the top 10. Casters 22 that allow the legs 21 to run on the floor are provided at the lower ends of the legs 21. However, the casters 22 do not necessarily have to be provided.

[0044] FIG. 10 is a perspective view showing an example of a combination of a mobile battery and a fixture. As shown in FIG. 10 , the top plate 10 is formed with a storage recess 12 that stores and holds the mobile battery 5. The storage recess 12 opens to the upper surface 11 of the top plate 10. In this embodiment, the storage recess 12 penetrates the top plate 10 in the up-down direction. The opening edge of the storage recess 12 is formed in a rectangular shape in a plan view. The storage recess 12 is formed inside the edge of the top plate 10. In other words, the entire opening edge of the storage recess 12 is located away from the edge of the top plate 10. For example, the storage recess 12 is formed in the center of the top plate 10.

[0045] The mobile battery 5 may be used while being housed in the housing recess 12. Hereinafter, the usage mode in which the mobile battery 5 is housed in the housing recess 12 will be referred to as the first usage mode. In the first usage mode, it is desirable that the mobile battery 5 be positioned so that the side port 36 is located above the upper surface 11 of the tabletop 10. In this case, it is more desirable that the mobile battery 5 be positioned with the first end surface 31 facing upward. This makes it possible to reduce the height of the portion of the battery main body 30 that is located above the upper surface 11 of the tabletop 10.

[0046] In the first usage mode, the upper attachment 50 can be connected to the end face facing upward out of the first end face 31 and the second end face 32 (first end face 31 in the illustrated example). For example, by attaching the cap body 80A to the battery main body 30 as the upper attachment 50, the user can easily grasp the handle 56 and insert or remove the mobile battery 5 into or from the storage recess 12.

[0047] In the first usage mode, the lower attachment 80 can be connected to the downward-facing end face (second end face 32 in the illustrated example) of the first end face 31 and the second end face 32. For example, by attaching a cap body 80A to the battery body 30 as the lower attachment 80, even if liquid that has spread on the upper surface 11 of the top plate 10 falls into the storage recess 12, it is possible to prevent the input terminals and the like provided on the end faces of the battery body 30 from getting wet.

[0048] In the first usage mode, the side port 36 may be located below the upper surface 11 of the tabletop 10. In this case, by connecting the power supply part 50E as the upper attachment 50 to the end surface facing upward out of the first end surface 31 and the second end surface 32, a port (additional port 63) that outputs power can be provided in a position that is easily accessible from the space above the tabletop 10.

[0049] FIG. 11 is a perspective view showing another example of a combination of a mobile battery and a fixture. As shown in FIG. 11 , the mobile battery 5 may be used by being placed on the upper surface 11 of the tabletop 10 so that it can stand on its own. Hereinafter, the usage mode in which the mobile battery 5 is placed on the upper surface 11 of the tabletop 10 will be referred to as the second usage mode. In the second usage mode, it is desirable to select the orientation of the mobile battery 5 so that the side port 36 is positioned closer to the upper surface 11 of the tabletop 10. In this embodiment, the mobile battery 5 is placed with the first end surface 31 facing downward. This makes it difficult for the force of inserting or removing a plug into the side port 36 to act as a moment on the standing mobile battery 5, thereby preventing the mobile battery 5 from tipping over.

[0050] In the second usage mode, the upper attachment 50 can be connected to the end face facing upward out of the first end face 31 and the second end face 32 (second end face 32 in the illustrated example). For example, by attaching a cap body 80A with a handle to the battery body 30 as the upper attachment 50, the user can easily move the mobile battery 5 by grasping the handle 56.

[0051] In the second usage mode, the lower attachment 80 can be connected to the downward-facing end face (first end face 31 in the illustrated example) of the first end face 31 and the second end face 32. For example, by attaching a stabilizing leg 80B to the battery main body 30 as the lower attachment 80, the mobile battery 5 can be stably and independently placed on the upper surface 11 of the top plate 10.

[0052] In the second usage mode, the mobile battery 5 may be placed with the first end surface 31 facing upward. In this case, it is possible to attach to the battery body 30 an upper attachment 50 that supplies power from or to the battery body 30, such as a lighting part 50D or a power supply part 50E.

[0053] As described above, the mobile battery 5 of this embodiment allows for selective attachment of one of multiple types of upper attachments 50 or one of multiple types of lower attachments 80 to at least one of the first end surface 31 and the second end surface 32 of the battery body 30. This configuration allows for the attachment to be selected depending on the situation in which the mobile battery 5 is used. Furthermore, because the attachments are attached to the end surfaces 31 and 32 of the battery body 30, the mobile battery 5 assumes a shape similar to an extension of the columnar battery body 30. Therefore, unlike a configuration in which an attachment is attached to the side surface 33 of the battery body 30, the attachment can be attached without disrupting the design of the battery body 30. Furthermore, when the mobile battery 5 is installed with the column axis aligned vertically, the horizontal space occupied by the mobile battery 5 can be prevented from expanding. This provides a mobile battery whose shape can be changed depending on the situation.

[0054] A side port 36 for outputting power is provided on the side surface 33 of the battery body 30. This configuration makes it possible to supply power to an external device regardless of the type of attachment selected. Therefore, a highly convenient mobile battery 5 can be provided.

[0055] The side port 36 is provided at a position offset from the center of the column axis direction of the battery main body 30. With this configuration, by selecting the orientation in which the mobile battery 5 is to stand on its own, the side port 36 can be positioned close to the surface on which the mobile battery 5 is to be placed. This makes it difficult for the force of inserting or removing a plug into the side port 36 to act as a moment on the freestanding mobile battery 5, thereby preventing the mobile battery 5 from tipping over. Therefore, a highly convenient mobile battery 5 can be provided.

[0056] The upper attachment 50 has an attachment side surface 52 that is flush with the side surface 33 of the battery main body 30. With this configuration, no step is formed between the battery main body 30 and the upper attachment 50, so a mobile battery 5 with a unified appearance can be provided.

[0057] A portion of the first attachment can be attached to the second end surface 32 of the battery body 30. This configuration increases the number of locations where the first attachment can be attached, thereby increasing the number of configurations of the mobile battery 5 that can be changed depending on the usage situation.

[0058] The present invention is not limited to the above-described embodiment explained with reference to the drawings, and various modifications are possible within the technical scope of the present invention. For example, in the above embodiment, the battery body 30 of the mobile battery 5 is formed in a rectangular prism shape, but the shape of the body of the mobile battery is not limited to this. For example, the mobile battery may be formed in a cylindrical shape or a prismatic shape other than a rectangular prism.

[0059] The method of connecting the battery body and the attachment of the present invention is not particularly limited as long as the attachment is provided so as to cover the end face of the battery body, and for example, the attachment may be screwed onto the battery body.

[0060] In the above embodiment, the mobile battery 5 is configured so that attachments can be selectively attached to both end faces 31, 32 of the battery body 30, but this configuration is not limited to this. The mobile battery may also be configured so that attachments can be selectively attached to only one end face of the battery body.

[0061] In the above embodiment, the upper attachment 50 has the attachment side surface 52 that is flush with the side surface 33 of the battery main body 30, but this configuration is not limited to this. A step may be formed between the side surface of the upper attachment and the side surface 33 of the battery main body 30.

[0062] In the above embodiment, the side port 36 of the battery body 30 is provided at a position offset toward the first end face 31 with respect to the center of the column axis direction of the battery body 30, but is not limited to this configuration. That is, the side port may be provided at a position offset toward the second end face 32 with respect to the center of the column axis direction of the battery body 30, or may be provided at the center position of the battery body 30 in the column axis direction.

[0063] In the above embodiment, when the upper attachment 50 is an electrical part such as the lighting part 50D or the power supply part 50E, the electrical part is configured to be electrically connected to a terminal provided on the end face of the battery main body, but this configuration is not limited to this. In other words, the electrical part does not have to be directly connected to the battery main body 30, and may be configured to be connected to the side port 36 of the battery main body 30 via a cable, for example.

[0064] In the above embodiment, the upper attachment 50 and the lower attachment 80 that can be connected to the first end surface 31 is referred to as the first attachment, but this first attachment may correspond to the first attachment in the claims or the second attachment in the claims. Also, the second attachment in the above embodiment may correspond to the second attachment in the claims or the first attachment in the claims.

[0065] In addition, it is possible to replace the components in the above-described embodiments with well-known components as appropriate, without departing from the spirit of the present invention, and the above-described embodiments and their variations may be combined as appropriate.

[0066] The inventions described in the specification and drawings of this application are as follows: (Appendix 1) a battery body that has a built-in battery cell, is formed in a columnar shape, and has a first end face and a second end face in a column axis direction; A plurality of types of attachments can be selectively attached one by one to at least one of the first end surface and the second end surface. Mobile battery. [Explanation of symbols]

[0067] 5...Mobile battery 30...Battery body 31...First end face (end face) 32...Second end face (end face) 33...Side face 36...Side port (port) 50A...First cap body (first attachment, second attachment) 50B...Second cap body (first attachment, second attachment) 50C...Third cap body (first attachment, second attachment) 50D...Lighting part (first attachment) 50E...Power supply part (first attachment) 52...Attachment side (outer surface) 80A...Cap body (first attachment, second attachment) 80B...Stabilizing leg (first attachment, second attachment)

Claims

1. The battery includes a battery body that has a built-in battery cell and is formed in a columnar shape, One of a plurality of types of first attachments can be selectively attached to an end surface on a first side in a column axis direction of the battery main body. Mobile battery.

2. One of a plurality of types of second attachments can be selectively attached to an end surface of the battery main body on a second side in the column axis direction. The mobile battery according to claim 1.

3. A port for outputting power is provided on the side of the battery body. A mobile battery according to claim 1 or claim 2.

4. The port is provided at a position offset from the center of the battery main body in the column axis direction. The mobile battery according to claim 3.

5. The first attachment has an outer surface flush with a side surface of the battery body. A mobile battery according to claim 1 or claim 2.

6. The first attachment can be attached to the end surface of the second side of the battery main body. The mobile battery according to claim 2.

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