Battery system

Abstract

The utility model provides a kind of battery system capable of simplifying the installation and dismounting operation of battery pack relative to storage shell.Battery system has the battery pack with the wheel (13) in both ends and storage shell (20), storage shell (20) has strut component (21b), the entrance and exit of battery pack (10) and the pair of track component (23a) for supporting wheel (13), track component (23a) has inclination (32a), the inclination is more and more downwards inclined towards the depth direction of entrance and exit, stopper (24) for preventing wheel (13) movement is installed on strut component (21b), wheel retaining portion (25) for keeping wheel (13) when wheel (13) and track component (23a) are in the state of separation is provided between inclination (32a) and stopper (24).

Description

Technical Field

[0001] This disclosure relates to a battery system, and more particularly to a battery system having a battery pack and a housing for storing the battery pack. Background Technology

[0002] Patent document 1 discloses a battery pack having a structure that can suppress the inward pressing of protrusions provided on the lower or upper housing even when subjected to a side impact.

[0003] Patent document 1: Japanese Patent Application Publication No. 2022-165717.

[0004] For use as storage batteries in homes or commercial settings, battery packs are sometimes installed outdoors. When installed outdoors, they are typically housed in a casing to withstand external impacts. This creates a need to install new battery packs into the casing or remove aging battery packs, which is often difficult due to their weight. Utility Model Content

[0005] This disclosure aims to solve the above-mentioned problems and provide a battery system that simplifies the installation and removal of the battery pack relative to the housing.

[0006] The battery system disclosed herein comprises: a battery pack in the shape of a cuboid with wheels at both ends; and a housing for housing the battery pack, the housing having: four support members respectively disposed on the outer sides of the four corners of the battery pack in a top view and extending in a vertical direction; an inlet / outlet of the battery pack disposed on one side of the housing and disposed between two of the support members; and a pair of track members disposed along the storage and removal direction of the battery pack to connect the two support members and to support the wheels of the battery pack, wherein the pair of track members have an inclined portion, the inclined portion... The section is inclined in a manner that it is located inside the storage and retrieval direction of the battery pack relative to the aforementioned inlet and outlet, and is located further down the closer to the inlet and outlet. On the opposite side of the storage housing opposite to the aforementioned side, a stop member is installed on the support member, which prevents the movement of the wheel at the position where it is separated from the aforementioned track member. In the storage and retrieval direction of the battery pack, a wheel retaining part is provided between the inclined section and the aforementioned stop member, which is used to retain the wheel when the battery pack is stored in the storage housing, in a state where the wheel is separated from the aforementioned pair of track members.

[0007] This structure simplifies the installation and removal of the battery pack relative to the aforementioned housing.

[0008] The aforementioned storage housing has a pair of support members arranged along the storage and removal direction of the battery pack, connecting the two aforementioned support pillar members. The pair of support members are mounted on the lower ends of the support pillar members and protrude from them in a predetermined direction. When the battery pack is stored and removed between the outside and inside of the storage housing, the pair of track members can be positioned at a height where the lower end of the battery pack and the upper end of the pair of support members will not interfere. With this structure, the battery pack and the support members will not interfere with each other, enabling the installation and removal of the battery pack relative to the storage housing.

[0009] According to this disclosure, a battery system can be provided that simplifies the installation and removal of the battery pack relative to the housing. Attached Figure Description

[0010] Figure 1 This is a perspective view showing the interior of the cover component of the battery system in Embodiment 1.

[0011] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the battery system in the XY plane.

[0012] Figure 3 for Figure 1 The diagram shows a partial cross-sectional view of the battery system near the wheel retainer in the YZ plane.

[0013] Figure 4 for Figure 1 The diagram shows an exploded perspective view of the battery system in its separated state, including the lower housing, wheel support, wheel, and track components. Detailed Implementation

[0014] The embodiments of this disclosure are described below with reference to the accompanying drawings. Figures 1 to 4 Please provide an explanation. Figure 1 This is a perspective view showing the interior of the cover component of the battery system in Embodiment 1. Figure 2 for Figure 1 The diagram shows a cross-sectional view of the battery system in the XY plane. Figure 3 for Figure 1 The diagram shows a partial cross-sectional view of the battery system near the wheel retainer in the YZ plane. Figure 4 for Figure 1 The diagram shows an exploded perspective view of the battery system in its separated state, including the lower housing, wheel support, wheel, and track components.

[0015] Figures 1 to 4 The right-handed XYZ rectangular coordinate system shown is naturally a reference coordinate system established to illustrate the positional relationships between the constituent elements. For example, in Figure 1 In this diagram, the positive direction of the Z-axis is vertically upward, and the XY plane is horizontal. This coordinate relationship is universal across all diagrams.

[0016] like Figure 1 , Figure 2 As shown, the battery system 1 includes a battery pack 10 and a housing 20 for storing the battery pack 10. The battery system 1 is installed in an outdoor environment or similar location. The housing 20 is a cuboid box that houses the battery pack 10 inside.

[0017] like Figure 1 , Figure 2 As shown, the battery pack 10 is a rectangular cuboid, with a long side and a short side when viewed from above, the long side extending along the X-axis. The battery pack 10 has an upper housing 11 disposed at the top and a lower housing 12 disposed at the bottom. The upper housing 11 and the lower housing 12 are made of metal materials such as aluminum or iron. A battery stack 15 is disposed between the upper housing 11 and the lower housing 12. The battery stack 15 is composed of secondary batteries such as lithium-ion batteries or nickel-metal hydride batteries, or capacitors.

[0018] like Figures 2 to 4 As shown, the battery pack 10 has wheels 13 at both ends in the X-axis direction. The wheels 13 are mounted to the lower housing 12 of the battery pack 10 via wheel supports 14. The wheels 13 are rotatably mounted to the wheel supports 14 with the X-axis as the center of rotation.

[0019] like Figure 1 , Figure 2 As shown, the housing 20 has four support members 21a, 21b, 21c, and 21d. Viewed from above, the support members 21a, 21b, 21c, and 21d are respectively located on the outer sides of the four corners of the battery pack 10 and extend vertically. The support members 21a, 21b, 21c, and 21d are made of metal materials such as aluminum and iron.

[0020] Cover members 2 are mounted on the top and sides of support members 21a, 21b, 21c, and 21d. The upper surface of the cover member 2 is a flat plate supported by the support members 21a, 21b, 21c, and 21d. Furthermore, the sides of the cover member 2 are side plates arranged along the XZ plane or the YZ plane and are disposed between the support members 21a, 21b, 21c, and 21d.

[0021] like Figure 1 , Figure 2As shown, the housing 20 has an inlet / outlet 22 for the battery pack 10. The inlet / outlet 22 is located on one side of the housing 20, specifically on the negative side in the Y-axis direction, between the two support members 21a and 21c. The inlet / outlet 22 is located on the side along the XZ plane of the housing 20. Through this inlet / outlet 22, the battery pack 10 can be stored in or removed from the housing 20.

[0022] like Figures 1 to 4 As shown, a pair of track components 23a and 23b are provided in the storage housing 20 along the storage and removal direction (Y-axis direction) of the battery pack 10. One track component 23a is arranged to connect two support components 21a and 21b, and the other track component 23b is arranged to connect two support components 21c and 21d. Track components 23a and 23b are located at the same height.

[0023] Track component 23a and track component 23b have the same structure. Figure 3 , Figure 4 Only track component 23a is shown in the illustration; the illustration of track component 23b is appropriately omitted. Furthermore, the description of track component 23b is also appropriately omitted. Figure 4 As shown, a pair of track components 23a and 23b are plate-shaped components bent in a crank shape, made of metal materials such as aluminum and iron. Horizontal surfaces extending along the XY plane are formed in track components 23a and 23b. These horizontal surfaces constitute the running surface 31 for the wheel 13 to travel on, supporting the wheel 13 of the battery pack 10.

[0024] Track component 23a has a horizontal portion 35, an inclined portion 32a, an inclined portion 32b, an end portion 37a, an end portion 37b, a bottom portion 36a, and a bottom portion 36b. Similarly, track component 23b has a horizontal portion 35, an inclined portion 32a, an inclined portion 32b, an end portion 37a, an end portion 37b, a bottom portion 36a, and a bottom portion 36b. They are arranged in the order of end portion 37a, bottom portion 36a, inclined portion 32a, horizontal portion 35, inclined portion 32b, bottom portion 36b, and end portion 37b, from the positive side of the Y-axis direction to the negative side of the Y-axis direction. Specifically, the inclined portion 32a is provided on the positive side of the Y-axis of the horizontal portion 35, and the inclined portion 32b is provided on the negative side of the Y-axis of the horizontal portion 35. That is, the horizontal portion 35 is provided between the inclined portions 32a and 32b. Alternatively, instead of providing the inclined portion 32b, bottom 36b, and end portion 37b, the horizontal portion 35 can be extended to the end of the track components 23a and 23b on the negative side of the Y-axis direction.

[0025] The inclined portion 32a is inclined such that it is positioned downwards as it gets closer to the positive side in the Y-axis direction. The inclined portion 32b is inclined such that it is positioned downwards as it gets closer to the negative side in the Y-axis direction. Therefore, the track components 23a and 23b are formed with structures that droop downwards at both ends in the Y-axis direction.

[0026] Thus, a pair of track components 23a and 23b have an inclined portion 32a, which is inclined in a manner that is located on the inside (positive side of the Y-axis direction) of the battery pack 10 relative to the inlet / outlet 22, and is located further down the closer to the inlet / outlet 22.

[0027] Bottom 36a is positioned on the positive side of the inclined portion 32a in the Y-axis direction, and bottom 36b is positioned on the negative side of the inclined portion 32b in the Y-axis direction. For example... Figure 3 As shown, the bottom 36a is a horizontal part, located below the horizontal part 35.

[0028] End portion 37a is positioned on the positive side of the bottom 36a in the Y-axis direction, and end portion 37b is positioned on the negative side of the bottom 36b in the Y-axis direction. End portions 37a and 37b are located at the ends of track components 23a and 23b. Figure 3 As shown, end 37a is inclined so that it is positioned higher the closer it is to the positive side in the Y-axis direction. A downwardly recessed portion is formed on the track member 23a by the inclined portion 32a, bottom 36a, and end 37b, and this recessed portion becomes the wheel retaining portion 25 described later.

[0029] Here, the inclined section 32a is the area on its upper side where the wheel 13 travels, and on its lower side, it is the area where the lower surface of the battery pack 10 abuts against the bottom plate 26 of the housing 20. Its length and inclination angle are set so that the wheel 13 floats off the inclined section 32a, bottom 36a, and end 37a of the track components 23a and 23b. In other words, when the battery pack 10 is being transported, the wheel 13 will separate from the track component 23a midway along the inclined section 32a in the Y-axis direction.

[0030] like Figure 2 , Figure 3 As shown, the housing 20 is provided with two stops 24. One stop 24 is mounted on the support member 21b, and the other stop 24 is mounted on the support member 21d. The stops 24 are located on opposite sides of one side of the housing 20, specifically on the side facing the positive direction of the Y-axis. The stops 24 are used to define the moving end of the wheel 13 on the positive side of the Y-axis. When the battery pack 10 is housed in the housing 20, the stops 24 prevent the wheel 13 from moving from the position where it is lifted from the inclined portion 32a, bottom 36a, and end 37a of the track member 23a, i.e., the position where the wheel 13 is separated from the track members 23a and 23b. Figure 3As shown, the stop 24 is positioned directly above the end 37a.

[0031] like Figure 3 As shown, the housing 20 has two wheel retaining portions 25 (only one is shown on the side of the track component 23a). The wheel retaining portion 25 is located between the inclined portion 32a and the stop member 24 in the Y-axis direction. The wheel retaining portion 25 is the space located above the inclined portion 32a, bottom 36a, and end 37a of the track component 23a. When the battery pack 10 is stored in the housing 20, the wheel 13 is held in the wheel retaining portion 25, and the wheel 13 is separated from the track components 23a and 23b.

[0032] like Figure 1 , Figure 2 As shown, the storage housing 20 has a pair of support members 27a and 27b extending along the storage and removal direction (Y-axis direction) of the battery pack 10. One support member 27a is arranged to connect two support members 21a and 21b, and the other support member 27b is arranged to connect two support members 21c and 21d. One support member 27a is installed at the lower end of the support members 21a and 21b, and the other support member 27b is installed at the lower end of the support members 21c and 21d.

[0033] The positive Y-axis end of the support member 27a is located directly below the support member 21b. The negative Y-axis end of the support member 27a is located closer to the negative Y-axis side than the support member 21a. In other words, the support member 27a protrudes from the support member 21a towards the negative Y-axis side. The positive Y-axis end of the support member 27b is located directly below the support member 21d. The negative Y-axis end of the support member 27b is located closer to the negative Y-axis side than the support member 21c. In other words, the support member 27b protrudes from the support member 21c towards the negative Y-axis side.

[0034] In this way, by having the support member 27a protrude from the support member 21a toward the negative side in the Y-axis direction and the support member 27b protrude from the support member 21c toward the negative side in the Y-axis direction, the battery system 1 can be prevented from tipping over toward the negative side in the Y-axis direction. The negative side in the Y-axis direction here is an example of "one side of a predetermined direction" in this disclosure.

[0035] Here, when storing and removing the battery pack 10 between the outside and inside of the housing 20, a pair of track components 23a and 23b are positioned at a height at which the lower end of the battery pack 10 and the upper end of the pair of support components 27a and 27b will not interfere with each other.

[0036] like Figure 1As shown, the bottom of the storage housing 20 is provided with a base plate 26. The base plate 26 is composed of a flat plate component, and when the battery pack 10 is stored in the storage housing 20, the battery pack 10 is placed on the base plate 26.

[0037] like Figure 1 As shown, the housing 20 has three first frame components 28a, 28b, and 28c extending along the X-axis. The first frame components 28a, 28b, and 28c are fixed to the support components 21c and 21a. The first frame components 28a, 28b, and 28c act as beams to improve the strength of the housing 20.

[0038] like Figure 1 As shown, the housing 20 has two second frame components 29a and 29b along the X-axis and two third frame components 30a and 30b along the Y-axis.

[0039] Third frame components 30a and 30b are mounted on the second frame component 29a and the second frame component 29b. The second frame component 29a extends from the support component 21a to the support component 21c. The second frame component 29b extends from the support component 21b to the support component 21d.

[0040] The second frame components 29a and 29b and the third frame components 30a and 30b serve as beams to increase the strength of the housing 20.

[0041] Next, the steps for installing the battery pack 10 into the storage housing 20 will be explained, that is, the method of storing the battery pack 10 into the storage housing 20.

[0042] First, remove the cover component 2, and remove the first frame components 28a, 28b, and 28c, the second frame components 29a and 29b, and the third frame components 30a and 30b from the storage housing 20. Then, move the battery pack 10 to the front side (negative side in the Y-axis direction) of the inlet / outlet 22.

[0043] Next, place the wheels 13 of the battery pack 10 on the running surface 31 of the track components 23a and 23b. Then, while moving the wheels 13 on the running surface 31, move the battery pack 10 relative to the inlet / outlet 22 toward the inside (positive side of the Y-axis direction) in the storage and retrieval direction.

[0044] When wheel 13 enters the inclined portion 32a of track components 23a and 23b, battery pack 10 also moves downwards. Then, when the bottom surface of battery pack 10 abuts against the bottom plate 26 of housing 20, wheel 13 disengages from the inclined portion 32a of track components 23a and 23b, and battery pack 10 moves while wheel 13 floats above the inclined portion 32a, bottom 36a, and end 37a of track components 23a and 23b. When wheel 13 hits stop 24 and its movement is stopped, wheel 13 is held in wheel holding portion 25.

[0045] Then, the removed first frame components 28a, 28b, 28c, second frame components 29a, 29b, and third frame components 30a, 30b are installed onto the storage housing 20, and the storage housing 20 is covered with the cover component 2, thereby completing the installation operation.

[0046] The operation of removing the battery pack 10 from the housing 20 can be performed by essentially reversing the steps of the installation operation described above.

[0047] The battery system disclosed herein includes a pair of track components 23a and 23b, which are arranged along the storage and removal direction of the battery pack 10 in a manner connecting two support components, and are used to support the wheels 13 of the battery pack 10. Therefore, by allowing the wheels 13 to travel on the track components 23a and 23b, the installation and removal of the battery pack 10 relative to the storage housing 20 can be facilitated. In addition, the pair of track components 23a and 23b can also protect the battery pack 10 from impacts in the X-axis direction.

[0048] Furthermore, since the pair of track components 23a and 23b have inclined portions 32a that are tilted downwards as they are closer to the entrance / exit, the impact on the battery pack 10 during storage can be mitigated.

[0049] Furthermore, by providing a stop 24 to prevent the wheel 13 from moving, and a wheel retaining part 25 to hold the wheel 13 apart from the track members 23a and 23b, the battery pack 10 can be easily placed in a predetermined position in the housing 20. Moreover, with the battery pack 10 housed in the housing 20, the wheel 13 does not contact the track members 23a and 23b. Therefore, even if wobbling occurs, movement of the battery pack 10 is prevented. When removing the battery pack 10 from the housing 20, the battery pack 10 is lifted with the wheel 13 positioned on the inclined section 32a. Then, the battery pack 10 is pulled out by rolling the wheel 13 on the inclined section 32a and the running surface 31.

[0050] Furthermore, since the track components 23a and 23b are located at a height that will not interfere with the upper ends of the support components 27a and 27b during the storage and removal of the battery pack 10 between the outside and inside of the storage housing 20, the battery pack 10 will not interfere with the support components 27a and 27b. Therefore, the battery pack 10 will not interfere with the support components 27a and 27b, and the installation and removal of the battery pack 10 relative to the storage housing 20 can be carried out smoothly.

[0051] It should be noted that this disclosure is not limited to the above-described embodiments, and appropriate modifications may be made without departing from the spirit and purpose of this disclosure.

Claims

1. A battery system, characterized in that, have: A battery pack that is rectangular in shape and has wheels at both ends; and Storage housing for storing the battery pack. The storage housing has: Four support pillars are respectively located on the outer sides of the four corners of the battery pack and extend in the vertical direction when viewed from above; The battery pack inlet / outlet is located on one side of the storage housing and positioned between the two support members; and A pair of track components, arranged along the storage and retrieval direction of the battery pack in a manner connecting the two support pillar components, and used to support the wheels of the battery pack, wherein... The pair of track components have inclined portions that are inclined in a manner that are located inside the storage and retrieval direction of the battery pack relative to the inlet and outlet, and are located further down the closer to the inlet and outlet. On the opposite side of the storage housing, which is opposite to the first side, a stop is installed on the support member, which prevents the movement of the wheel at a position where it is separated from the track member. In the direction of storing and removing the battery pack, a wheel retaining part is provided between the inclined part and the stop member. The wheel retaining part is used to hold the wheel when the battery pack is stored in the storage housing, in a state where the wheel is separated from the pair of track members.

2. The battery system according to claim 1, characterized in that, The storage housing has a pair of support components, which are arranged along the storage and removal direction of the battery pack in a manner that connects the two support pillar components. The pair of support components are mounted on the lower end of the support component and protrude from the support component to one side in a predetermined direction. When the battery pack is stored and removed between the outside and inside of the housing, the pair of track components are positioned at a height where the lower end of the battery pack and the upper end of the pair of support components will not interfere with each other.

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