power storage device

Abstract

To achieve a power storage device capable of suppressing a negative effect of water that has infiltrated an inside of a case on an electrical device. In a power storage device of one embodiment of the present disclosure, the case includes a frame including a column unit and a beam member that links the column units and is assembled with a fastening member, a partition member that is fixed to the frame with the fastening member and divides an inside of the case into a space in which the electrical device is accommodated and another space, and a cap-shaped member that is fixed to the frame. The partition member includes waterproof portions at both end portions thereof on the left and right. In a state where the partition member is arranged on the upper side with respect to the electrical device, the waterproof portions are covered with the cap-shaped member.

Description

Technical Field

[0001] This disclosure relates to energy storage devices. Background Technology

[0002] Typical energy storage devices are configured to house a battery inside a housing. For example, Patent Document 1 discloses a housing in which the support and beam of the housing can be assembled via a bracket.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2001-307697

[0004] In a typical energy storage device, where the interior of the casing is divided into a space for housing electrical equipment and other spaces, it is desirable to form a structure that prevents water from entering the space housing electrical equipment from the other spaces and suppresses the negative impact of water entering the casing on the electrical equipment. Summary of the Invention

[0005] This disclosure provides an energy storage device capable of suppressing the negative impact of water that has seeped into the interior of the housing on electrical equipment.

[0006] One aspect of the energy storage device disclosed herein is an energy storage device comprising an electrical device including a battery and a housing housing the electrical device.

[0007] The aforementioned housing comprises:

[0008] The frame has column units and beam members that connect the column units, and can be assembled by fastening components;

[0009] The partitioning component, which can be fixed to the frame by fastening components, divides the interior of the housing into a space for accommodating the electrical equipment and other spaces; and

[0010] The cap-shaped component is fixed to the aforementioned frame.

[0011] The aforementioned partition component has waterproof portions at both its left and right ends, and when it is positioned on top of the aforementioned electrical equipment, the aforementioned cap-shaped component covers the waterproof portions.

[0012] In the aforementioned energy storage device, it is preferable that the partition component supports a temperature regulating device for cooling the coolant used to cool the aforementioned electrical equipment, and that a temperature regulating space is formed inside the aforementioned housing.

[0013] The aforementioned housing has a first communication port and a second communication port that communicate with the aforementioned temperature regulation space.

[0014] The temperature regulating device is configured in the airflow path between the first connecting port and the second connecting port.

[0015] In the aforementioned energy storage device, the first communication port is preferably located on the rear side of the housing.

[0016] The second communication port is disposed on at least one of the left or right sides of the housing.

[0017] The aforementioned partition component includes a support portion that supports the aforementioned temperature regulating device, and a wall portion that rises upward from the front end of the aforementioned support portion and guides air flowing into the aforementioned temperature regulating space from the aforementioned first connecting port and passing through the aforementioned temperature regulating device to the aforementioned second connecting port.

[0018] The aforementioned waterproof portions are formed in the aforementioned support portion and the aforementioned wall portion, respectively.

[0019] In the above-mentioned energy storage device, it is preferable that the waterproof part has a labyrinth structure.

[0020] According to this disclosure, an energy storage device is available that can suppress the negative impact of water that has seeped into the interior of the housing on electrical equipment. Attached Figure Description

[0021] The above and other objects, features and advantages of this disclosure will become clearer from the following detailed description and accompanying drawings.

[0022] Figure 1 In the figures, (A) is a perspective view of the energy storage device of the embodiment viewed from the X-axis + side, and (B) is a perspective view of the energy storage device of the embodiment viewed from the X-axis - side.

[0023] Figure 2 This is a diagram showing the internal structure of the energy storage device as viewed from the Y-axis + side.

[0024] Figure 3 This is a diagram showing the structure of the first space surrounding the energy storage device in the embodiment, viewed from the Z-axis + side.

[0025] Figure 4 In the diagram, (A) is a perspective view showing the frame of the housing and partition components in the energy storage device according to the embodiment, and (B) is a perspective view showing the column unit of the frame in the energy storage device according to the embodiment.

[0026] Figure 5 In the diagram, (A) is a perspective view showing the structure around the partition component in the energy storage device of the embodiment, (B) is a perspective view showing the partition component in the energy storage device of the embodiment, and (C) is a cross-sectional view showing the arrangement of the waterproof part and the cap-shaped part of the partition component in the energy storage device of the embodiment. Detailed Implementation

[0027] Hereinafter, specific embodiments to which this disclosure is applied will be described in detail with reference to the accompanying drawings. However, this disclosure is not limited to the following embodiments. In addition, to make the description clearer, the following description and drawings can be appropriately simplified.

[0028] First, the structure of the energy storage device according to this embodiment will be described. Here, for clarity, a three-dimensional (XYZ) coordinate system will be used in the following description. For example, the X-axis + side is the front side of the energy storage device, the X-axis - side is the rear side of the energy storage device, the Y-axis + side is the left side of the energy storage device, the Y-axis - side is the right side of the energy storage device, the Z-axis + side is the upper side of the energy storage device, and the Z-axis - side is the lower side of the energy storage device.

[0029] Figure 1 (A) is a perspective view of the energy storage device of this embodiment as viewed from the X-axis + side. Figure 1 (B) is a perspective view of the energy storage device of this embodiment as viewed from the X-axis side. Figure 2 This is a diagram showing the internal structure of the energy storage device of this embodiment as viewed from the Y-axis + side.

[0030] Figure 3 This is a diagram showing the structure of the first space surrounding the energy storage device in this embodiment, viewed from the Z-axis + side. Figure 4 (A) is a perspective view showing the frame of the housing and the partition components in the energy storage device of this embodiment. Figure 4 (B) is a perspective view of the column unit of the frame in the energy storage device of this embodiment.

[0031] Figure 5 (A) is a perspective view showing the structure around the partition component in the energy storage device of this embodiment. Figure 5 (B) is a perspective view showing the partition components in the energy storage device of this embodiment. Figure 5 (C) is a cross-sectional view showing the arrangement of the waterproof part and the cap-shaped part of the partition component in the energy storage device of this embodiment.

[0032] Energy storage device 1, for example, Figure 1 (A) Figure 1 (B) Figure 2 ,as well as Figure 3 As shown, it includes a battery pack 2, a housing 3, and a temperature regulation device 4. The battery pack 2 is a rechargeable battery, configured, for example, to be approximately the same as a typical vehicle battery pack.

[0033] Battery pack 2 is formed by housing battery modules inside the casing, such as lithium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries, or all-solid-state batteries. For example... Figure 2As shown, battery pack 2 is roughly rectangular in shape when viewed from the Z-axis and is a flat plate shape that is roughly parallel to the XY plane. Battery pack 2 overlaps in the Z-axis direction.

[0034] For example, Figure 1 (A) Figure 1 (B) Figure 2 , Figure 3 , Figure 4 (A) and Figure 4 As shown in (B), the housing 3 is box-shaped and includes a frame 5, partition components 6, cap-shaped components 7, a top plate 8, a floor 9, and side wall components 10. The frame 5 includes, for example, column units 5a and beam components 5b, and is assembled using bolts 11, which are representative examples of fastening components.

[0035] In addition, Figure 4 In (A), only the representative bolt 11 is shown. For example, as shown in Figure 11... Figure 4 (A) and Figure 4 As shown in (B), the combined hollow square timbers form column units 5a. Column units 5a are configured to be approximately parallel to the XZ plane and spaced apart in the Y-axis direction.

[0036] In this embodiment, for example, Figure 4 (A) and Figure 4 As shown in (B), three column units 5a are spaced apart in the Y-axis direction. For example, a beam member 5b is made of hollow square timber. The beam member 5b extends in the Y-axis direction and connects to the column units 5a adjacent to it in the Y-axis direction.

[0037] For example, Figure 5 (A) and Figure 5 As shown in (B), the partition member 6 is a plate member that is approximately bent into an L-shape when viewed from the Y-axis direction. The partition member 6 includes a support portion 6a, a wall portion 6b, and a waterproof portion 6c. For example, as... Figure 2 As shown, the support part 6a supports the temperature regulating device 4.

[0038] For example, Figure 5 (A) and Figure 5 As shown in (B), the support portion 6a is configured to be substantially parallel to the XY plane. The wall portion 6b protrudes from the end of the support portion 6a on the X-axis + side toward the Z-axis + side and is configured to be substantially parallel to the YZ plane.

[0039] For example, Figure 5 (A) and Figure 5 As shown in (C), the waterproof portion 6c is formed at the Y-axis + side end of the support portion 6a and the Y-axis - side end of the wall portion 6b. For example, the waterproof portion 6c may have a labyrinth shape in which the Y-axis direction end of the support portion 6a is folded back into a generally C-shape.

[0040] At this time, for example, Figure 5 As shown in (C), the portion of the waterproof part 6c formed in the support part 6a is folded back from both ends of the support part 6a in the Y-axis direction in a manner that it is rolled inward relative to the Z-axis + side of the support part 6a.

[0041] In detail, the portion of the waterproof part 6c formed in the support part 6a includes, for example, a first part that stands upright from the end of the support part 6a in the Y-axis direction toward the Z-axis+ side and is substantially parallel to the XZ plane, and a second part that folds back from the end of the first part on the Z-axis+ side toward the inside of the support part 6a in the Y-axis direction and is substantially parallel to the XY plane.

[0042] Furthermore, the portion of the waterproof part 6c formed in the wall portion 6b is folded back from both ends of the wall portion 6b in the Y-axis direction in a manner that wraps inward relative to the X-axis side of the wall portion 6b. More specifically, the portion of the waterproof part 6c formed in the wall portion 6b includes, for example, a first portion that stands upright from the end of the wall portion 6b in the Y-axis direction toward the X-axis side and is substantially parallel to the XZ plane, and a second portion that folds back from the X-axis side end of the first portion toward the inside of the wall portion 6b in the Y-axis direction and is substantially parallel to the YZ plane.

[0043] like Figure 4 As shown in (A), such partitioning component 6 is configured as column unit 5a on the Y-axis + side and column unit 5a in the center of the frame 5, and column unit 5a on the Y-axis - side and column unit 5a in the center of the frame 5.

[0044] Moreover, such as Figure 2 As shown, the partition component 6 is disposed on the Z-axis + side of the frame 5 and on the X-axis - side of the frame 5. In other words, the partition component 6 is configured to cover the corner where the Z-axis + side and the X-axis - side of the frame 5 intersect.

[0045] like Figure 4 As shown in (A), the partition component 6 is fixed to a clamp (not shown) fixed to the frame 5 using bolts 12, which are representative examples of fastening components. Furthermore, in Figure 4 In (A), only the representative bolt 12 is shown.

[0046] At this time, as Figure 2 As shown, the X-axis end of the support portion 6a of the partition component 6 reaches the X-axis end of the frame 5, and the Z-axis+ end of the wall portion 6b of the partition component 6 reaches the Z-axis+ end of the frame 5.

[0047] Therefore, as Figure 2 as well as Figure 3As shown, the interior of the housing 3 includes a first space S1, a second space S2, and a third space S3. The first space S1 is the space inside the housing 3 surrounded by the partition component 6. A temperature regulating device 4 is disposed in the first space S1.

[0048] For example, such as Figure 2 as well as Figure 3 As shown, the second space S2 is the space inside the housing 3, excluding the first space S1, between the Y-axis-side column unit 5a and the central column unit 5a. The battery pack 2 is housed in the second space S2 in an overlapping state. Furthermore, the battery pack 2 is fixed to the frame 5.

[0049] For example, Figure 2 as well as Figure 3 As shown, the third space S3 is the space inside the housing 3, excluding the first space S1, between the column unit 5a on the Y-axis + side and the central column unit 5a. The third space S3 houses control devices such as the power control unit that controls each battery pack 2.

[0050] Furthermore, the control device 13 is fixed to the frame 5. In other words, the interior of the housing 3 is divided by the partition component 6 into a second space S2 and a third space S3, which houses the electrical equipment 14 containing the battery pack 2 and the control device 13, and another first space S1.

[0051] For example, such as Figure 5 (A) and Figure 5 As shown in (C), the cap-shaped member 7 covers the portion of the waterproof portion 6c formed in the support portion 6a from the Z-axis + side, and covers the portion of the waterproof portion 6c formed in the wall portion 6b from the X-axis - side. The energy storage device 1 of this embodiment includes a cap-shaped member 7 on the Y-axis + side, a cap-shaped member 7 on the Y-axis - side, and a central cap-shaped member 7.

[0052] For example, Figure 5 As shown in (C), the cap-shaped member 7 is formed by bending the C-shaped groove member open on the Z-axis side into an L-shape. In other words, the cap-shaped member 7 has, for example, a first part that is open on the Z-axis side in a generally C-shape and extends in the X-axis direction, and a second part that is open on the X-axis+ side in a generally C-shape and extends from the X-axis+ side end of the first part toward the Z-axis+ side.

[0053] Moreover, such as Figure 5 As shown in (A), the cap-shaped component 7 on the Y-axis + side is fixed to the column unit 5a on the Y-axis + side, the cap-shaped component 7 on the Y-axis - side is fixed to the column unit 5a on the Y-axis - side, and the central cap-shaped component 7 is fixed to the central column unit 5a.

[0054] At this time, as Figure 5As shown in (A), the cap-shaped member 7 on the Y-axis + side, the cap-shaped member 7 on the Y-axis - side, and the central cap-shaped member 7 are arranged at approximately equal heights in the Z-axis direction. Furthermore, the Y-axis + side waterproof portion 6c of the partition member 6, which is disposed between the column unit 5a on the Y-axis + side and the central column unit 5a, is housed inside the cap-shaped member 7 on the Y-axis + side.

[0055] The cap-shaped member 7 on the Y-axis side houses the waterproof portion 6c on the Y-axis side of the partition member 6, which is positioned between the column unit 5a on the Y-axis side and the central column unit 5a. Additionally, as... Figure 5 As shown in (C), the space inside the central cap-shaped member 7 on the Y-axis+ side houses the waterproof part 6c on the Y-axis-side of the partition member 6, which is arranged between the column unit 5a on the Y-axis+ side and the central column unit 5a.

[0056] like Figure 5 As shown in (C), the space inside the central cap-shaped member 7 on the Y-axis side houses the waterproof part 6c on the Y-axis+ side of the partition member 6, which is arranged between the column unit 5a on the Y-axis side and the central column unit 5a.

[0057] like Figure 1 (A) and Figure 1 As shown in (B), the top plate portion 8 covers the open portion on the Z-axis + side of the frame 5. The floor portion 9 covers the open portion on the Z-axis - side of the frame 5. The side wall portion 10 covers the open portion on the X-axis + side, the open portion on the X-axis - side, the open portion on the Y-axis + side, and the open portion on the Y-axis - side of the frame 5.

[0058] For example, Figure 1 As shown in (A), the side wall portion 10 on the X-axis + side can be constructed from a door that can be opened and closed. Figure 1 As shown in (B), a first communication port 10a is formed on the side wall portion 10 on the X-axis side.

[0059] like Figure 2 as well as Figure 3 As shown, the first connection port 10a connects the X-axis side portion of the first space S1 to the outside. The first connection port 10a is disposed between the Y-axis side column unit 5a and the central column unit 5a of the X-axis side wall portion 10, and is disposed on the Z-axis side portion relative to the support portion 6a of the partition member 6.

[0060] like Figure 1As shown in (A), a second communication port 10b is formed on the sidewall portion 10 on the Y-axis + side. The second communication port 10b connects the Y-axis + side portion of the first space S1 to the outside. The second communication port 10b is disposed, for example, on the X-axis - side portion of the sidewall portion 10 on the Y-axis + side, and on the Z-axis + side portion of the sidewall portion 10 on the Y-axis + side, and is arranged at intervals in the X-axis direction.

[0061] like Figure 1 As shown in (B), a third communication port 10c is formed on the side wall portion 10 on the Y-axis side. The third communication port 10c connects the Y-axis side portion of the first space S1 to the outside. The third communication port 10c is located, for example, on the X-axis side portion of the Y-axis side wall portion 10 and on the Z-axis+ side portion of the Y-axis side wall portion 10, and is arranged at intervals in the X-axis direction.

[0062] like Figure 1 (A) and Figure 1 As shown in (B), grilles 15 can be embedded in these first connecting ports 10a, second connecting ports 10b, and third connecting ports 10c. Temperature regulating device 4 cools the coolant circulating in electrical equipment 14, for example, to cool the electrical equipment 14.

[0063] The temperature regulating device 4 can, for example, cool the coolant by bringing the air drawn in by the fan 4a (i.e., outside air) into contact with the coolant circuit through which the coolant circulates. Therefore, the first space S1 of the housing 3 functions as a temperature regulating space.

[0064] like Figure 2 As shown, the temperature regulating device 4 is fixed to the X-axis side of the support portion 6a of the partition component 6. At this time, the temperature regulating device 4 can be configured to overlap with the first communication port 10a of the housing 3 when viewed from the X-axis direction.

[0065] Here, in Figure 3 In the diagram, the flow of air into the first space S1 is indicated by arrows. In such a structure, for example, air flowing into the first space S1 of the housing 3 via the first communication port 10a of the housing 3 through the fan 4a of the temperature regulating device 4 is introduced to the X-axis + side by the fan 4a, cools the coolant in contact with the coolant circuit in the temperature regulating device 4, and then contacts the wall 6b of the partition component 6.

[0066] Therefore, the air that comes into contact with the wall 6b of the partition component 6 is diverted and guided to the Y-axis + side and the Y-axis - side. The air guided to the Y-axis + side is discharged from the second communication port 10b of the housing 3, and the air guided to the Y-axis - side is discharged from the third communication port 10c of the housing 3. In other words, the wall 6b of the partition component 6 functions as a guide for directing air to the second communication port 10b and the third communication port 10c.

[0067] Therefore, air can be effectively discharged from the first space S1 of the housing 3. In addition, when air is not discharged from the X-axis + side of the housing 3 and the X-axis + side of the housing 3 is used as the front of the energy storage device 1, the generation of noise on the front of the energy storage device 1 can be suppressed.

[0068] At this time, the temperature regulating device 4 is disposed in the first airflow path R1 between the first connecting port 10a and the second connecting port 10b and the second airflow path R2 between the first connecting port 10a and the third connecting port 10c.

[0069] Next, the waterproof structure of the energy storage device 1 of this embodiment will be described. In the energy storage device 1 of this embodiment, there is a possibility that rainwater or other water may enter the first space S1 through the first connection port 10a, the second connection port 10b, and the third connection port 10c of the housing 3.

[0070] In this situation, water moves along the support portion 6a of the partition member 6, but is blocked by the waterproof portion 6c of the partition member 6. Furthermore, since the waterproof portion 6c of the partition member 6 is covered by the cap-shaped member 7, water intrusion into the gap between the waterproof portion 6c of the partition member 6 and the frame 5 can be prevented. Therefore, water intrusion from the first space S1 into the second space S2 and the third space S3 can be prevented, and the negative impact of water on the electrical equipment 14 can be suppressed.

[0071] Thus, the energy storage device 1 of this embodiment is configured such that the partition member 6 has a waterproof portion 6c, which is covered by a cap-shaped member 7. Therefore, water moving along the support portion 6a of the partition member 6 can be blocked by the waterproof portion 6c of the partition member 6.

[0072] Furthermore, since the waterproof portion 6c of the partition component 6 is covered by the cap-shaped component 7, water ingress into the gap between the waterproof portion 6c of the partition component 6 and the frame 5 can be prevented. Therefore, the energy storage device 1 of this embodiment can prevent water from seeping from the first space S1 into the second space S2 and the third space S3, and can suppress the negative impact of water on the electrical equipment 14.

[0073] Especially when the waterproof portion 6c of the partition component 6 has a labyrinth structure, water moving along the support portion 6a of the partition component 6 can be reliably blocked by the waterproof portion 6c of the partition component 6.

[0074] Furthermore, the energy storage device 1 of this embodiment is configured to allow the frame 5 to be assembled using fastening components, and the partition component 6 to be fixed to the frame 5 using fastening components. In this case, for example, the frame 5 can be disassembled into column units 5a and beam components 5b, and the partition component 6 can be sprayed in the spray booth without fixing the partition component 6 to the frame 5. Afterwards, the frame 5 can be assembled, and the partition component 6 can be fixed to the frame 5. Therefore, it is possible to prevent the size of the housing 3 from being limited by the size of the spray booth.

[0075] Furthermore, in the energy storage device 1 of this embodiment, when air is directed to the second communication port 10b and the third communication port 10c through the wall portion 6b of the partition member 6, air can be effectively discharged from the first space S1 of the housing 3. Moreover, when air is not discharged from the X-axis + side of the housing 3 and the X-axis + side of the housing 3 is used as the front of the energy storage device 1, noise generation on the front of the energy storage device 1 can be suppressed.

[0076] Furthermore, the shape of the waterproof portion 6c of the partition member 6 in this embodiment is merely an example; any shape capable of blocking water moving along the support portion 6a of the partition member 6 is acceptable. Similarly, the configuration of the temperature regulating device 4 is also merely an example; any structure capable of cooling the electrical equipment 14 is acceptable.

[0077] The energy storage device 1 in this embodiment is configured to have an overlapping battery pack 2 in the Z-axis direction, but it is sufficient to have one or more batteries.

[0078] Although the invention has been described with reference to preferred embodiments, it is apparent to those skilled in the art that it can be modified in various ways and that various embodiments different from those presented and described above can be deduced. Therefore, the technical solutions are intended to cover all modifications of the invention that fall within the spirit and scope of the invention.

Claims

1. An energy storage device comprising an electrical device including a battery and a housing housing the electrical device, wherein, The aforementioned housing comprises: The frame has column units and beam members that connect the column units, and can be assembled by fastening components; The partition component can be fixed to the frame by fastening components and divides the interior of the housing into a space for accommodating the electrical equipment and other spaces. as well as The cap-shaped component is fixed to the aforementioned frame. The aforementioned partition component has waterproof portions at both its left and right ends, and when the partition component is positioned on the upper side relative to the aforementioned electrical equipment, the waterproof portions are covered by the aforementioned cap-shaped component.

2. The energy storage device according to claim 1, wherein, The aforementioned partition components support a temperature regulating device and form a temperature regulating space inside the aforementioned housing. The temperature regulating device cools the coolant used to cool the aforementioned electrical equipment. The aforementioned housing has a first communication port and a second communication port that communicate with the aforementioned temperature regulation space. The temperature regulating device is configured in the airflow path between the first connecting port and the second connecting port.

3. The energy storage device according to claim 2, wherein, The aforementioned first communication port is located on the rear side of the aforementioned housing. The second communication port is disposed on at least one side of the left and right sides of the housing. The aforementioned partition component includes a support portion and a wall portion. The support portion supports the temperature regulating device, and the wall portion rises upward from the front end of the support portion, guiding air that flows into the temperature regulating space from the first connecting port and passes through the temperature regulating device to the second connecting port. The aforementioned waterproof portions are formed in the aforementioned support portion and the aforementioned wall portion, respectively.

4. The energy storage device according to any one of claims 1 to 3, wherein, The aforementioned waterproof section has a labyrinth structure.

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