CN111194487B - Power supply device - Google Patents
Power supply device Download PDFInfo
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- CN111194487B CN111194487B CN201880063071.2A CN201880063071A CN111194487B CN 111194487 B CN111194487 B CN 111194487B CN 201880063071 A CN201880063071 A CN 201880063071A CN 111194487 B CN111194487 B CN 111194487B
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- Prior art keywords
- battery assembly
- power supply
- supply device
- metal plates
- bending
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/271—Lids or covers for the racks or secondary casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a power supply device capable of suppressing occurrence of resonance. A power supply device (100) is provided with: a battery assembly (40) comprising at least one battery cell, the battery assembly having a rectangular parallelepiped shape and comprising: a side surface (43), and a top surface (41) and a bottom surface (42) separated from each other in a parallel state, the side surface (43) connecting the top surface (41) and the bottom surface (42) between them; and a plurality of metal plates (50) that are respectively arranged on each side of the rectangular parallelepiped shape that constitutes the battery assembly (40). The metal plates (50) are fixed to each other in a state in which the ends thereof overlap at the four corners of the top surface (41) and the bottom surface (42) of the battery assembly (40).
Description
Technical Field
The present invention relates to a power supply device.
Background
A power supply device including a plurality of secondary battery cells (cells) is used for applications that charge and discharge with a large current, such as a driving power supply for a moped, an electric vehicle, a hybrid vehicle, an electric vehicle, or the like, because the secondary battery cells are connected in series to increase an output voltage.
Since such a power supply device for driving is exposed to vibration, it is desirable to avoid occurrence of resonance itself as much as possible to avoid problems such as loosening caused by resonance. However, it is extremely difficult to physically suppress occurrence of resonance caused by vibration.
Prior art literature
Patent literature
Patent document 1: japanese patent application laid-open No. 2004-236450
Disclosure of Invention
The present invention has been made in view of the background of the prior art, and an object thereof is to provide a power supply device capable of suppressing occurrence of resonance.
According to a first aspect of the present invention, a power supply device includes: a battery assembly including one or more battery cells, the battery assembly being formed in a rectangular parallelepiped shape, the battery assembly having top and bottom surfaces that are separated from each other in a parallel state, and side surfaces that connect the top and bottom surfaces between the top and bottom surfaces; and a plurality of metal plates disposed on respective sides of a rectangular parallelepiped shape constituting the battery assembly, the metal plates being fixed in a state in which end portions thereof are overlapped at respective corners of four corners of the top surface and the bottom surface of the battery assembly. According to the above configuration, by disposing the metal plates on each side of the rectangular parallelepiped battery assembly and fixing the metal plates to each other, the following advantages can be obtained: the rectangular parallelepiped shape of the battery assembly is reliably fixed and stably held, and resonance and looseness can be suppressed. In addition, by concentrating the fixing positions on the top and bottom surfaces, the fixing work is easily concentrated, and workability in assembling is improved.
In the power supply device according to the second aspect, in addition to the above-described configuration, each metal plate may have a through hole formed at each of four corners of the top surface and the bottom surface of the battery assembly, and at ends where adjacent metal plates overlap each other, and the power supply device may further include a pin portion inserted into and fixed to each of the through holes of each metal plate at each of four corners of the top surface and the bottom surface of the battery assembly. According to the above configuration, the metal plates disposed on the sides of the rectangular parallelepiped battery assembly are easily and reliably fixed to each other by the pin fastening, and the sides can be stably held by the metal plates, so that occurrence of resonance and looseness can be suppressed.
In addition, according to the power supply device of the third aspect, in addition to the above-described arbitrary configuration, the metal plate may include: a plurality of belt-shaped portions each of which at least partially covers a side of the side surface adjacent to each other and has an L-shaped horizontal cross section; and reinforcing plates disposed on 2 opposite sides of the top and bottom surfaces, respectively. According to the above configuration, the metal plate can be constituted by the strip portion in the reinforcing longitudinal direction and the reinforcing plate in the reinforcing horizontal direction, and the reinforcing effect of each side can be improved.
Further, according to the power supply device of the fourth aspect of the present invention, in addition to the above-described arbitrary structure, each of the belt-shaped portions may be formed by integrally configuring a pair of side holding portions that cover at least partially the adjacent pair of sides among the sides adjacent to each other, and a connecting side that connects the side holding portions at both ends and covers the side where the reinforcing plate is not arranged among the sides constituting the top surface. According to the above configuration, since the band-shaped portion is formed in the shape of コ and the battery assembly can be held by the side surface holding portion, the workability of assembly can be improved, and the member holding one side of the top surface and the member holding the side surface can be integrated, thereby improving the mechanical strength.
In addition, according to a power supply device of a fifth aspect, in addition to the above-described arbitrary configuration, the side surface holding portion may include: and a first surface and a second surface adjacent to each other and covering the sides of the battery assembly, the first surface including: the first bending surface is formed by bending an end portion of the first surface at a first bending line to cover a part of a bottom surface of the battery assembly, and the second surface is formed in a shape that is a certain area is missing (or is missing) from the first bending line. According to the above configuration, it is possible to alleviate: stress tends to be in the case of a corner portion where stress is easily concentrated, so that the belt-like portion can be protected.
In the power supply device according to the sixth aspect, in addition to the above-described arbitrary structure, the side edge of the reinforcing plate may be bent in the extending direction. According to the above structure, the rib can be erected on the side of the reinforcing plate to increase the mechanical strength thereof.
In the power supply device according to the seventh aspect, in addition to the above-described arbitrary structure, the pin portion may be formed with a screw groove on a side surface, and the pin portion may be fixed to the through hole by screwing. According to the above configuration, the battery assembly can be firmly fastened by screwing.
In addition, according to the power supply device pertaining to the eighth aspect, in addition to the above-described arbitrary configuration, the battery assembly may be formed as: a shape obtained by leaving a part of the short side of the rectangle missing (or missing). According to the above configuration, in the housing case, the components such as the output terminal can be arranged in the space that is not left free.
In addition, according to the power supply device of the ninth aspect, in addition to the above-described arbitrary configuration, the power supply device may further include: and a storage case having an opening at an end edge and capable of storing the battery assembly therein.
In addition, according to a tenth aspect of the present invention, in addition to the above-described arbitrary configuration, the power supply device may further include: a top cover part for sealing one opening end of the storage case; and a bottom cover portion that closes the other opening end of the storage case, wherein the battery assembly and the top cover portion, and the battery assembly and the bottom cover portion are fixed by screwing with the pin portion. According to the above configuration, the battery assembly, the top cover portion, and the bottom cover portion are integrated and fixed by screwing, whereby occurrence of resonance due to vibration or the like can be suppressed.
Drawings
Fig. 1 is a perspective view showing a power supply device according to an embodiment of the present invention.
Fig. 2 is a perspective view of the power supply device of fig. 1 viewed obliquely from below.
Fig. 3 is an exploded perspective view of the power supply device of fig. 1.
Fig. 4 is an exploded perspective view of the power supply device of fig. 3, as seen obliquely from below.
Fig. 5 is a cross-sectional view of the power supply device of fig. 1 taken along line V-V.
Fig. 6 is an exploded perspective view of the battery assembly of fig. 3 with the metal plate removed.
Fig. 7 is an exploded perspective view of the battery assembly of fig. 6, as seen from obliquely below.
Fig. 8 is an exploded perspective view of the battery assembly of fig. 6.
Fig. 9 is an exploded perspective view of the battery assembly of fig. 8 further exploded.
Fig. 10 is an exploded cross-sectional view showing a state in which a battery assembly is fastened by a metal plate.
Fig. 11 is a perspective view showing the metal plate of fig. 7.
Fig. 12 is a perspective view showing a metal plate according to example 2.
Fig. 13 is a perspective view of the bottom cover part of fig. 3.
Fig. 14 is a perspective view of the top cover portion of fig. 4.
Fig. 15A is a cross-sectional view showing a state in which the battery assembly is pressed into the bottom cover portion, and fig. 15B is a cross-sectional view showing a state in which the battery assembly is pressed into the introduction rib.
Fig. 16 is an exploded perspective view of the top cover portion.
Fig. 17 is an exploded perspective view showing a state in which the blocking portion is inserted into the frame portion of fig. 16.
Fig. 18 is an exploded perspective view of the top cover portion of fig. 16 viewed obliquely from below.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings. However, the following embodiments illustrate a configuration for embodying the technical idea of the present invention, and the present invention is not limited to the following. In addition, the components shown in the claims are by no means specific to the components of the embodiments. In particular, the dimensions, materials, shapes, relative arrangements, and the like of the structural members described in the embodiments are not intended to limit the scope of the present invention to these only unless specifically described, but are merely illustrative examples. The sizes, positional relationships, and the like of the components shown in the drawings are sometimes exaggerated for clarity of explanation. In the following description, the same names and symbols denote the same or similar components, and detailed description thereof is appropriately omitted. Further, in the respective elements constituting the present invention, a plurality of elements may be constituted by the same member, and one member may be used as a plurality of elements, or the functions of one member may be shared by a plurality of members. The contents described in some of the examples and embodiments can be applied to other examples and embodiments.
The following power supply devices are mainly: an example of a driving power source applied to an electric vehicle such as an electric car or an electric cart that travels only by a motor will be described. The power supply device of the present invention may be used for a hybrid vehicle that travels by both an engine and a motor, or for a use other than an electric vehicle that requires a large output, for example, a power storage device for home use or factory use.
(embodiment 1)
Fig. 1 to 5 show a power supply device 100 according to embodiment 1. Of these, fig. 1 is a perspective view showing a power supply device 100 according to an embodiment of the present invention, fig. 2 is a perspective view of the power supply device 100 of fig. 1 as seen from obliquely below, fig. 3 is an exploded perspective view of the power supply device 100 of fig. 1, fig. 4 is an exploded perspective view of the power supply device 100 of fig. 3 as seen from obliquely below, and fig. 5 is a cross-sectional view of the power supply device 100 of fig. 1 taken along line V-V. The power supply device 100 shown in these figures is formed in a box shape, and a handle 28 is provided at the upper part. The box-shaped power supply device 100 has a vertically long rectangular parallelepiped shape, and a bottom surface is flat, so that it can stand upright. The power supply device 100 is internally connected in series and/or in parallel with a plurality of battery cells (cells) and is capable of outputting electric power to the outside. As shown in fig. 2, 4, and the like, an output terminal 33 is provided on the bottom surface, and the output terminal 33 is connected to a power supply target device such as an electric vehicle to supply electric power thereto. The user can grasp the handle 28 and attach and detach the power supply device 100.
As shown in fig. 3 and 4, and fig. 5, which is an exploded perspective view and a cross-sectional view, the power supply device 100 includes: the storage case 10, the top cover 20, the bottom cover 30, and the battery assembly 40. The housing case 10 is formed as: hollow and having an upper surface and a lower surface opened so as to house the battery assembly 40 therein. The housing first opening 11 on the upper surface side of the housing case 10 is closed by a top cover 20. In addition, the case second opening 12 on the lower surface side of the storage case 10 is closed by the bottom cover portion 30. The storage case 10 is preferably: is made of a metal excellent in heat dissipation and strength. For example, it is set that: aluminum, iron, stainless steel, etc., which are lightweight and have excellent design properties.
(Heat sink 2)
As shown in the exploded perspective views of fig. 3 and 4, the heat sink 2 and the amide fiber sheet 3 are disposed on the side surface of the battery assembly 40, and the battery assembly 40 is housed in the housing case 10 in a state covered with these heat sink 2 and amide fiber sheet 3. The heat sink 2 is made of a flexible member having excellent heat conductivity, and for example, a silicone resin sheet can be used. By interposing the heat sink 2 between the side surface of the battery assembly 40 and the inner surface of the storage case 10, it is possible to suppress: a gap is formed between the battery assembly 40 and the storage case 10. Thereby, an air layer is formed to become a heat insulating layer, and it is possible to avoid: preventing heat dissipation from the battery assembly 40.
(amide fiber sheet 3)
In addition, the amide fiber sheet 3 uses a thin flexible sheet excellent in strength to avoid: when the battery assembly 40 is housed in the housing case 10, the surface of the battery assembly 40 or the housing case 10 is ground by the contact portion, and a powdery foreign matter is generated. For example, paper sheets of amides are suitable for use as the amide fiber sheet 3.
(Battery Assembly 40)
The battery assembly 40 is a member in which a plurality of secondary battery cells 1 are housed. As shown in the sectional view of fig. 5, the exploded perspective view of fig. 6 and fig. 7, the periphery of the battery assembly 40 is surrounded by a plurality of metal plates 50 and mechanically fastened. Specifically, the battery assembly 40 has a rectangular parallelepiped shape. The rectangular parallelepiped battery assembly 40 includes: top surface 41, bottom surface 42, and side surface 43. The top surface 41 and the bottom surface 42 are separated from each other in a substantially parallel posture. In addition, side surfaces 43 connect top surface 41 and bottom surface 42 together. The metal plates 50 are disposed respectively: each side of the rectangular parallelepiped shape constituting the battery assembly 40. The metal plates 50 are fixed to each other at four corners of the top surface 41 and the bottom surface 42 of the battery assembly 40 in a state where the ends of the metal plates 50 are overlapped. By adopting such a structure, the rectangular parallelepiped shape of the battery assembly 40 can be reliably fixed and stably held, and occurrence of resonance and looseness can be suppressed. Further, by concentrating the fixing positions on the top surface 41 and the bottom surface 42, the fixing work can be easily concentrated, and workability in assembling can be improved.
The battery assembly 40 need not be formed in a complete rectangular parallelepiped shape, and may be formed in a shape or size that can be accommodated in the accommodating case 10: a locally deficient or protruding shape. The battery assembly 40 shown in fig. 6, 7, and the like is configured as: a shape obtained by leaving a part of one side of the bottom surface 42 missing (or missing). By providing the lacking portion 47, the components such as the output terminal 33 can be arranged as shown in fig. 3 and the like.
As shown in the exploded perspective views of fig. 6 to 9, the battery assembly 40 accommodates a plurality of secondary battery cells 1. Each secondary battery cell 1 is accommodated in a battery holder 44. In this example, the battery holder 44 is configured to: 42 cylindrical secondary battery cells 1 can be stacked. The battery holder 44 is made of resin or the like. The secondary battery cell 1 is provided with electrodes on the end surfaces of a cylindrical outer can. The end faces of the secondary battery cells 1 are stacked in an aligned state, and the secondary battery cells 1 are connected in series or in parallel by a lead plate 45 or the like. The secondary battery cell 1 can be used, for example: lithium ion secondary batteries, nickel hydrogen secondary batteries, nickel cadmium secondary batteries, and the like. The secondary battery cell 1 is not limited to a cylindrical shape, and other shapes may be applied, for example, such as: the outer can is formed into square secondary battery cells or laminated secondary battery cells.
(Pin 46)
The metal plates 50 are fixed to each other by the pin portions 46. The pin 46 penetrates and fixes the metal plates 50 in a state where the ends of the metal plates 50 overlap each other at four corners of the top surface 41 and the bottom surface 42 of the battery assembly 40. However, on the battery assembly 40 side, screw holes or the like for fixing the pin portions 46 are not provided, but are formed: the metal plate 50 is fastened from the outside of the battery assembly 40. This can avoid: the metal plate 50 can be pressed to fasten the sides, while resonance occurs due to a small gap such as a dimensional tolerance of the position of the screw hole or the like on the battery assembly 40 side, or a manufacturing error of the size of the screw hole.
Each metal plate 50 has through holes formed at four corners of the top surface 41 and the bottom surface 42 of the battery assembly 40 at the end portions where adjacent metal plates 50 overlap each other. Thus, the metal plates 50 disposed on the sides of the rectangular parallelepiped battery assembly 40 are easily and reliably fixed to each other by the pin fastening. As a result, each side can be reinforced by the metal plate 50, and vibration or impact from each direction can be stably held, so that occurrence of resonance and looseness can be suppressed.
The through hole may be used as a screw hole into which a screw is inserted. Further, by forming a screw groove in the side surface of the pin portion 46, the screw can be fixed to the screw hole by screwing using a nut, and thus the fixing operation can be easily performed. In this example, the pin 46 is screwed with a nut inserted into the top cover 20 on the top surface side of the battery assembly 40. Further, on the bottom surface side, the pin portion 46 is inserted into the bottom cover portion 30, and the nut is screwed.
(band portion 51)
As shown in the exploded perspective views of fig. 6 and 7, the metal plate 50 is composed of a reinforcing plate 56 and a plurality of belt-like portions 51. The strips 51 each at least partially cover: of the sides constituting the battery assembly 40, the sides in the vertical direction, that is, the cover: the side faces 43 of the battery assembly 40 are adjacent to one another. The band portion 51 may cover not only the side in the vertical direction but also a part of the side in the horizontal direction. In the example shown in the exploded perspective views of fig. 6 and 7, each of the belt-shaped portions 51 is constituted by a pair of side holding portions 52 and a connecting edge 53 connecting the upper ends of the side holding portions 52 to each other.
(side holding portion 52)
As shown in exploded perspective views of fig. 6 and 7, the side holding portion 52 includes: adjacent first surface 52a and second surface 52b that can cover the sides of battery assembly 40. The front end of the first surface 52a is bent at the first bending line 52d to form a first bending surface 52c, so as to cover a part of the bottom surface 42 of the battery assembly 40.
The width of the first surface 52a of the side surface holding portion 52 in the width direction intersecting the extending direction is formed wider than the width of the second surface 52b. The first surfaces 52a of the plurality of belt-shaped portions 51 are arranged on each other: on a first side 43A of the sides 43 of the battery assembly 40. The second surfaces 52b are arranged to each other: and a second side 43B adjacent to the first side 43A of the side 43 of the battery assembly 40. The battery assembly 40 shown in fig. 6 to 8 has a surface on which the lead plates 45 are disposed as the second side surface 43B.
The pair of side holding portions 52 at least partially cover the sides in the vertical direction, and one connecting side 53 covers the sides in the horizontal direction. Here, the joining edge 53 covers: of the sides in the horizontal direction of the top surface 41 constituting the battery assembly 40, the side on which the reinforcing plate 56 is not disposed. The side holding portions 52 and the connecting edges 53 are preferably integrally formed. Accordingly, as shown in fig. 10, since the band-shaped portion 51 is formed in a コ shape and the battery assembly 40 can be held by sandwiching the battery assembly 40 by the side surface holding portion 52, workability of assembly can be improved, and the member holding one side of the top surface 41 and the member holding the side of the side surface 43 can be integrated, thereby improving mechanical strength.
(reinforcing plate 56)
The reinforcing plate 56 is disposed: constituting a side in the horizontal direction of the top surface 41 or the bottom surface 42. As shown in the exploded perspective views of fig. 6 and 7, the reinforcing plates 56 are disposed respectively: opposite sides of the top surface 41 or the bottom surface 42. Further, of the sides in the horizontal direction, the connecting plate is not necessarily arranged on the side on which the connecting side 53 of the band portion 51 is arranged. In this sense, the connecting edge 53 of the band portion 51 can be said to be formed by integrating a part of the reinforcing plate 56 with the pair of side holding portions 52.
In this way, the metal plate 50 is fastened in a frame shape along each side of the battery assembly 40, and the battery assembly 40 is pressed so that no excessive gap or the like is generated, thereby preventing loosening. Further, the reinforcing plate 56 is not covered with the side in the horizontal direction, but is arranged along the side in the horizontal direction. On the other hand, the side surface holding portion 52 of the band-shaped portion 51 is formed in an L-shape in cross section so as to cover the sides in the vertical direction and so as to cover the sides at least partially across the adjacent side surfaces 43. The connecting edge 53 of the band-shaped portion 51 is also formed in an L-shape in cross section so as to cover the edge in the horizontal direction and so as to span between the top surface 41 and the side surface 43 of the battery assembly 40. In this structure, as shown in fig. 10, when fixing the metal plate 50, the side surface holding portion 52 is spread out to the left and right and placed on the upper surface of the battery assembly 40 in a state where the upper surface of the metal plate 50 is fixed to the top cover 20, and in this state, the side surface holding portion 52 is brought into contact with the side surface 43 of the battery assembly 40, and when fixing the bottom surface 42 of the battery assembly 40 by the pin portion 46, the side surface holding portion 52 is positioned so as to reliably cover the side surface 43 of the battery assembly 40. In this way, the side surface 43 of the battery assembly 40 can be reliably held by the L-shaped section of the side surface holding portion 52, and the metal plates 50 can be disposed on the sides of the battery assembly 40 including the side surface 43 and can be reliably fastened to prevent resonance from occurring.
As shown in the exploded perspective views of fig. 6 and 7, the reinforcing plate 56 may be folded along the extending direction. Accordingly, the rib 57 can be raised from the side edge of the reinforcing plate 56 to increase the mechanical strength thereof.
These metal plates 50 and reinforcing plates 56 are preferably made of metal such as iron, aluminum, or stainless steel.
(threaded hole)
As described above, the through-hole of the metal plate 50 through which the pin portion 46 is inserted can be used as a screw hole through which a screw is inserted and fixed. The connecting side screw holes 54 and the bending side screw holes 55 are formed as band-shaped side screw holes at both ends of the connecting side 53 of the band-shaped portion 51 and the first bending surface 52c, respectively. Further, plate-side screw holes 58 are also formed at both ends of the reinforcing plate 56. These threaded holes constitute: the band portion 51 is fixed to the battery assembly 40, the top cover portion 20, the bottom cover portion 30, and the like by the pin portion 46.
As shown in the exploded perspective views of fig. 6 and 7, the belt-shaped portion 51 is screwed to the top cover portion 20 by passing the pin portion 46 from below the connection-side screw holes 54 on both sides of the connection side 53 on the upper surface of the battery assembly 40, through which screws are passed, and then inserting the screws into the plate-side screw holes 58 formed in the reinforcing plate 56. On the other hand, on the lower surface of the battery assembly 40, screws are inserted into plate-side screw holes 58 formed in both ends of the reinforcing plate 56 from above the first bending surface 52c, and after passing through the bottom cover portion 30, nuts are screwed again to fix the battery assembly. Thus, the constitution is as follows: the battery assembly 40 is screwed from the lower side to the upper side at the upper portion, and from the upper side to the lower side at the lower portion. Thus, the screw head or the like can be screwed without being exposed to the upper surface side of the top cover portion 20, and the device includes: the advantage of not having to screw directly into the battery assembly 40 is achieved.
A first bending surface 52c of the first surface 52a of each band-shaped portion 51 is provided with: the side screw hole 55 is folded. The second surface 52b is made to have a certain area from the first bending line 52 d. In this state, the belt-shaped portions 51 are inserted into the screw holes 55 on the bending side and are fixed to the bottom surface 42 of the battery assembly 40 by screwing. Accordingly, the 4 band-shaped portions 51 can be fixed from the bottom surface 42 of the battery assembly 40, and workability can be improved.
The reinforcing plate 56 is provided with plate-side screw holes 58 on both sides of the plate shape. Then, the screw is inserted into: the screws inserted into the bending side screw holes 55 are then inserted into the plate side screw holes 58 of the reinforcing plate 56, and the screws are fixed so as to cross the screws separated from each other.
As shown in the enlarged perspective view of fig. 11, the side surface holding portion 52 lacks a notch at a critical position between the first surface 52a and the second surface 52b so that the second surface 52b is not present in the vicinity of the first bending line 52 d. This can alleviate: the stress tends to be in the case of the corner portion where the stress is easily concentrated, so that the belt-like portion 51 can be protected.
Example 2
However, the side holding portion is not limited to the above-described structure. In the power supply device 100 according to embodiment 1 shown in fig. 11, the second surface 52b of the side surface holding portion 52 is omitted in the vicinity of the first bending surface 52c, so that it is possible to alleviate the problem: the stress concentrates on the corner of the first bending line 52 d.
In contrast, by adding other members, the resistance to stress concentration can be further improved. For example, in terms of the structure, a corner portion of the rectangular parallelepiped battery assembly where stress concentration is severe may be formed, and a part of the corner portion region of the side surface holding portion may be partially missing in order to further alleviate the stress concentration. Here, a side holding portion 52' of the power supply device according to embodiment 2 is shown in a perspective view of fig. 12. The side holding portion 52' shown in the figure includes, like in fig. 11, the following: a first face 52a 'and a second face 52b'. The first surface 52a' has: a first bending surface 52c 'formed by bending an end portion of the first surface 52a' at the first bending line 52d ', and the first bending surface 52c' can cover a part of the bottom surface 42 of the battery assembly 40. The first bending surface 52c' is formed as: the bending side screw hole 55' is opened.
In addition, the second surface 52b' has: a second bending surface 52e ' formed by bending an end portion of the second surface 52b ' at the second bending line 52f ', and the second bending surface 52e ' can cover a part of the bottom surface 42 of the battery assembly 40 in a state of being folded with the first bending surface 52c '. The second bending surface 52e' is formed as: the second bending side screw hole 55b' is opened. The second bending side screw hole 55b ' coincides with the bending side screw hole 55' of the first bending surface 52c ', and the pin portion can be inserted and fixed. Here, the pin portion is fixed by screwing with a screw. In addition, the vicinity of the first bending line 52d 'and the second bending line 52f' is partially missing at the critical position between the first surface 52a 'and the second surface 52b'. Accordingly, the following can be alleviated: the stress toward the corner where the stress is easily concentrated can protect the band portion 51'. That is, the first surface 52a 'of each band 51' is provided with: the first bending surface 52c 'is provided at an end of the second surface 52 b': the second bending surface 52e 'covers and is screwed to the second bending surface 52e' in a state where the bottom surface 42 and the top surface 41 of the battery assembly 40 are folded with the first bending surface 52c ', respectively, whereby the band-shaped portions 51' can be fixed to the top surface 41 and the bottom surface 42 of the battery assembly 40, respectively, and the integration can be improved.
(aggregate guide rib 32)
In addition, at least one of the top cover portion 20 and the bottom cover portion 30 is formed: the plurality of assembly guide ribs 32 abutting the battery assembly 40 are protruded from the inner surface so as to be separated from each other. By providing such an aggregate guide rib 32, the gap between the storage case 10 and the battery aggregate 40 can be filled while fitting with the storage case 10, and the battery aggregate 40 and the storage case 10 can be integrated, whereby it is possible to prevent: when a gap is generated between the battery assembly 40 and the storage case 10, and the occurrence of rattling occurs, resonance can be suppressed.
In the present embodiment, as shown in fig. 13 and 14, a first rib 32A and a second rib 32B are formed as the aggregate guide rib 32 in the top cover portion 20 and the bottom cover portion 30, respectively. The aggregate guide ribs 32 are tapered so that the end edges thereof widen toward the open end side. As a result, as shown in fig. 15A to 15B, the battery assembly 40 can be easily inserted into the assembly guide rib 32. Further, the constitution is as follows: the metal plate 50 is provided with a rib formed by bending the end edge, and the side surface of the battery assembly 40 is partially covered with the rib, and when the battery assembly 40 is fitted, the rib is pressed by the assembly guide rib 32, whereby the battery assembly 40 can be fitted to the top cover 20 or the bottom cover 30 with a more uniform stress.
The aggregate guide ribs 32 are formed at opposing portions of the inner surfaces of the top cover portion 20 and the bottom cover portion 30, respectively. In the case where the top cover portion 20 and the bottom cover portion 30 are rectangular, the aggregate guide ribs 32 are formed on the opposite sides, respectively. In the example shown in fig. 13 and 14, the assembly guide rib 32 is formed on each side of the rectangle constituting the top cover portion 20 and the bottom cover portion 30. However, the aggregate guide ribs 32 formed on each side or the aggregate guide ribs 32 formed on the same side need not have the same shape, but may be appropriately changed according to the shape of the portion where the power supply aggregate 40 is abutted and held. The plurality of aggregate guide ribs 32 are formed to be separated from each other in a parallel state. The aggregate guide ribs 32 are formed in an L-shape in a side view. The aggregate guide rib 32 is preferably: integrally formed with the top cover portion 20 and the bottom cover portion 30.
In addition, the present invention may also include: corner portions disposed at corners of the inner surface of the top cover portion 20 and formed separately from the top cover portion 20. A third introduction rib is provided at the corner portion. By combining the aggregate guide ribs 32 at the corners of the inner surface of the top cover portion 20, which is difficult to be injection molded, as other members, the aggregate guide ribs 32 can be disposed even at the corners, and thus, the occurrence of backlash and resonance can be suppressed by avoiding the formation of gaps at the corners.
(Top cover portion 20)
The top cover 20 is fixed to the upper surface of the storage case 10, and closes the case first opening 11 of the storage case 10. The top cover 20 includes, at an upper portion thereof: a handle portion 28 for gripping by a user. Here, fig. 16 to 18 show an exploded perspective view of the top cover portion 20. Of these, fig. 16 is an exploded perspective view of the top cover portion, fig. 17 is an exploded perspective view showing a state in which the blocking portion is inserted into the frame portion of fig. 16, and fig. 18 is an exploded perspective view of the top cover portion of fig. 16 as seen obliquely from below. The top cover 20 shown in these drawings is divided into three parts, and is composed of a cover 21 as a first case, a blocking portion 22 as a second case, and a frame 23 as a third case.
(frame 23)
The frame 23 is connected to the housing first opening 11 of the housing 10. The frame 23 includes: a handle frame 24 forming part of the handle portion 28. Therefore, in order to make the handle frame 24 exhibit sufficient mechanical strength, a resin having high strength is used for the frame portion 23. In addition, the structure may be as follows: the handle portion 28 can be structurally reinforced by providing a standing rib or the like. However, the appearance is deteriorated due to the structure configured to increase the mechanical strength. Therefore, the cover 21 covers the upper surface of the frame 23.
(cover portion 21)
The cover 21 covers: the upper surface of the frame portion 23 including the handle frame 24. By covering the frame portion 23 with the cover portion 21 in this manner, the upper surface of the frame portion 23 can be hidden without being exposed to the outside. In other words, the upper surface of the frame portion 23 may employ: the structure dedicated to improving strength without having to mind the appearance. On the other hand, by improving the design of the cover portion 21, the aesthetic appearance of the top cover portion 20 can be improved. In this way, by providing the frame portion 23, which places importance on the strength of the handle portion 28, and the cover portion 21, which places importance on the design of the exterior, as separate members, both strength and exterior can be achieved.
Thus, by constituting the top cover 20 from a plurality of members, it is possible to realize: the function of reinforcing the handle portion 28, the function of improving the design of the top cover portion 20, and the function of eliminating the thickness accumulation of the resin members constituting the top cover portion 20, thereby avoiding deterioration of the appearance due to shrinkage of the resin or the like. That is, since the roof portion is conventionally formed of one member, there are problems such as: in order to increase the strength of the handle portion 28, the design is deteriorated, and in order to increase the strength, the resin member is thickened, and shrinkage holes generated during the curing of the resin are increased, so that the appearance quality is deteriorated. Therefore, by preparing the frame portion 23 for which strength is important and preparing the cover portion for covering the cover frame portion 23, the cover portion 21 can have an appearance, and the appearance can be made neat and the appearance can be improved.
The frame portion 23 is formed with: a frame opening 25 communicating with the housing first opening 11 in a state of being connected to the housing case 10. The handle frame 24 of the frame portion 23 is formed as: a posture crossing the frame opening 25. In the example shown in fig. 16 to 18, the frame portion 23 is formed as: along the rectangle around the housing first opening 11, the handle frame 24 is provided with: in a state of being erected in the frame opening 25 so as to be T-shaped in a plan view. The lower part of the cross bar 26 constituting the upper part of the T-shape is opened laterally.
(plugging portion 22)
Further, the top cover portion 20 is provided with: the blocking portion 22 is disposed between the frame portion 23 and the cover portion 21, and the frame opening 25 is blocked by the blocking portion 22. Accordingly, the mold molding of the frame portion 23 is facilitated by the following structure: a handle frame 24 is formed so as to cross the frame opening 25, and the frame opening 25 is sealed by a sealing portion 22 as another member. Further, the cover 21 is configured to: since the bottom surface visible through the frame opening 25 is formed as a separate member, the cover 21 can be realized: the design of the appearance such as the color and shape of the cover 21 is taken into consideration.
In addition, the blocking portion 22 is formed as: the central recess is curved. Thus, when the user grips the handle portion 28, a large space for inserting a hand can be ensured, and the user can easily grip. In addition, the edge of the step is eliminated by forming the curved surface, so that the inserted hand cannot touch the edge, and comfortable use feeling can be obtained. In addition, by forming the curved surface shape, the designability is also improved. In addition, an opening is provided below the cross bar 26, and in this portion, the blocking portion 22 located below the cross bar 26 is formed to be low, and the opposite side is formed to be high, so that when foreign matter such as dust or water drops is present on the upper surface area of the blocking portion 22, the blocking portion 22 is inclined such that: the cross bar 26 side is set in a downhill posture, so that: the foreign matter accumulated in the pit of the blocking portion 22 can be smoothly discharged through the opening.
As shown in fig. 1, 16, 17, and the like, the cover 21 has a side surface formed with: a frame-shaped cover frame 27. The cover frame 27 has the same surface shape as the blocking portion 22 in a state where the cover portion 21 and the blocking portion 22 are joined, and the curved surfaces from the cover frame 27 to the blocking portion 22 are continuous, so that the surfaces continuously change. Thus, when the user wants to grasp the handle portion 28 and insert his or her hand, he or she can guide his or her hand more smoothly.
The top cover 20 is preferably made of a lightweight resin having excellent insulation properties. For example, PBT (polybutylene terephthalate), PC (polycarbonate) resin, or the like can be preferably used. In addition, the top cover 20 may be composed of a plurality of members, and may be composed of different members. For example, the frame 23 may be made of a resin having high strength or a metal having more excellent rigidity. In addition, the color of the components may also be different from one component to another. For example, the cover of the blocking portion 22 may be formed of different colors, so that variations in versions of different colored products or the like may be exhibited.
As shown in fig. 16 to 18, the cover 21 is fixed by screwing from the back side of the frame 23. Accordingly, the top cover 20 is formed so as not to expose the screw hole. On the other hand, as shown in fig. 3 and the like, the bottom cover portion 30 is fixed by screws from the bottom surface 42. However, the screw hole is blocked by the screw cover 34, so that the screw can be prevented from being exposed.
Industrial applicability
The power supply device according to the present invention can be suitably used as a power supply device for an electric vehicle, an electric scooter, an electric vehicle, a hybrid vehicle, or the like. In addition, the present invention can be suitably applied to: a stand-by power supply device that can be mounted on a rack of a computer server, a stand-by power supply device for a wireless base station such as a mobile phone, a power storage power supply for home use, factory use, a power supply for a street lamp, a power storage device that is combined with a solar cell, a stand-by power supply for a traffic signal, and the like.
Description of the reference numerals
100 … Power supply device 1 … Secondary Battery cell
2 … radiating fin 3 … amide fibre sheet
10 … housing 11 … housing first opening portion
12 … casing second opening 20 … Top cover portion
21 … cover 22 … closure
23 … frame 24 … handle frame
25 … frame opening 26 … cross bar
27 … cover frame 28 … handle portion
30 … bottom cover portion 32 … aggregate guide rib
32A … first rib 32B … second rib
33 … output terminal 34 … screw cap
40 … cell aggregate 41 … top surface
42 … bottom 43 and … side
43A … first side 43B … second side
45 … lead plate of 44 … battery holder
46 … pin 47 … missing portion
50 … Metal sheet 51, 51' … Belt portion
52. 52'… side retaining portions 52a,52a' … first side
52b,52b '… second face 52c, 52c' … first folded face
52d, 52d '… first bend line 52e' … second bend face
52f' … second bend line 53 … connecting edge
54 … connecting side screw holes 55, 55' … bending side screw holes
55b' … second bending side screw hole 56 … reinforcing plate
57 … rib 58 … plate side screw hole
Claims (7)
1. A power supply device, wherein,
the power supply device is provided with:
a battery assembly including one or more battery cells, the battery assembly being formed in a rectangular parallelepiped shape, the battery assembly having top and bottom surfaces that are separated from each other in a parallel state, and side surfaces that connect the top and bottom surfaces between the top and bottom surfaces; and
a plurality of metal plates disposed on respective sides of a rectangular parallelepiped shape constituting the battery assembly,
the metal plates are fixed in a state that the ends of the metal plates are overlapped at the corners of the four corners of the top surface and the bottom surface of the battery assembly,
each of the metal plates is formed with a through hole at each of four corners of the top and bottom surfaces of the battery assembly, at the end portions of the adjacent metal plates overlapping each other,
the metal plate further comprises:
a plurality of belt-shaped portions, each of which is formed by integrally configuring a pair of side holding portions that cover at least partially adjacent ones of the sides adjacent to each other, and each of which has an L-shaped horizontal cross section, and a connecting side that connects the side holding portions at both ends and covers one of the sides constituting the top surface on which a reinforcing plate is not arranged; and
reinforcing plates disposed on 2 opposite sides of the top and bottom surfaces, respectively,
the power supply device further includes:
a pin portion for inserting and fixing the through holes of the metal plates at each of four corners of the top and bottom surfaces of the battery assembly; and
a top cover part fixed to the upper surface of the metal plate by the pin part on the top surface side of the battery assembly,
the cover portion has a handle portion.
2. The power supply device according to claim 1, wherein,
the side holding portion includes: covering adjacent first and second faces of the sides of the battery assembly,
the first surface is provided with: a first bending surface for covering a part of the bottom surface of the battery assembly by bending an end portion of the first surface at a first bending line,
the second surface is a surface obtained by leaving a certain area from the first bending line.
3. The power supply device according to claim 1 or 2, wherein,
the side edges of the reinforcing plate are bent along the extending direction.
4. The power supply device according to claim 1, wherein,
the pin portion is formed with a screw groove on a side surface thereof, and is fixed to the through hole by screwing.
5. The power supply device according to claim 4, wherein,
the battery assembly is formed by: a shape obtained by leaving a part of the short side of the rectangle missing.
6. The power supply device according to claim 4 or 5, wherein,
the device further comprises: and a storage case having an opening at an end edge and capable of storing the battery assembly therein.
7. The power supply device according to claim 6, wherein,
the storage case further comprises a bottom cover part for closing the other opening end of the storage case, wherein the one opening end of the storage case is closed by the top cover part,
the battery assembly and the top cover portion, and the battery assembly and the bottom cover portion are fixed by screwing with the pin portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-190037 | 2017-09-29 | ||
| JP2017190037 | 2017-09-29 | ||
| PCT/JP2018/031511 WO2019065033A1 (en) | 2017-09-29 | 2018-08-27 | Power supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111194487A CN111194487A (en) | 2020-05-22 |
| CN111194487B true CN111194487B (en) | 2023-06-16 |
Family
ID=65900772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880063071.2A Active CN111194487B (en) | 2017-09-29 | 2018-08-27 | Power supply device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7128828B2 (en) |
| CN (1) | CN111194487B (en) |
| PH (1) | PH12020550174A1 (en) |
| WO (1) | WO2019065033A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114270601A (en) * | 2019-10-03 | 2022-04-01 | 本田技研工业株式会社 | Battery module, electric power unit, and work machine |
| CN114270602A (en) * | 2019-10-03 | 2022-04-01 | 本田技研工业株式会社 | Battery module, electric power unit, and work machine |
| JP7257932B2 (en) * | 2019-10-28 | 2023-04-14 | 京セラ株式会社 | Electric equipment cases and power storage devices |
| CN112310547B (en) * | 2020-04-09 | 2024-09-03 | 宁德时代新能源科技股份有限公司 | Battery, power utilization device and production method of battery |
| KR20220039301A (en) * | 2020-09-22 | 2022-03-29 | 주식회사 엘지에너지솔루션 | Battery module and battery pack including the same |
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| CN101542772A (en) * | 2007-02-01 | 2009-09-23 | 丰田自动车株式会社 | Electric storage device |
| CN102593388A (en) * | 2010-12-04 | 2012-07-18 | 三洋电机株式会社 | Battery pack and vehicle including the same |
| JP2013055070A (en) * | 2012-12-19 | 2013-03-21 | Sanyo Electric Co Ltd | Battery pack |
| CN104300098A (en) * | 2014-10-10 | 2015-01-21 | 浙江新大力电光源集团股份有限公司 | Vibration-proof storage battery shell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101224496B1 (en) * | 2010-02-04 | 2013-01-21 | 주식회사 엘지화학 | Battery Pack Having Reinforcement Member |
| JP5222335B2 (en) * | 2010-09-22 | 2013-06-26 | 三菱重工業株式会社 | Battery module and battery system |
| KR101680709B1 (en) * | 2010-11-12 | 2016-12-12 | 에스케이이노베이션 주식회사 | Battery module case |
| JP6288333B2 (en) * | 2012-01-16 | 2018-03-07 | 株式会社Ｇｓユアサ | Battery pack and power supply device |
| KR101285712B1 (en) * | 2012-02-27 | 2013-07-12 | 세방전지(주) | Battery pack case |
| JP6332725B2 (en) * | 2013-09-27 | 2018-05-30 | 株式会社Ｇｓユアサ | Power storage device |
| JP6421497B2 (en) * | 2014-08-27 | 2018-11-14 | 株式会社豊田自動織機 | Battery module |
| JP6565585B2 (en) * | 2015-10-20 | 2019-08-28 | 株式会社豊田自動織機 | Battery pack |
-
2018
- 2018-08-27 WO PCT/JP2018/031511 patent/WO2019065033A1/en active Application Filing
- 2018-08-27 CN CN201880063071.2A patent/CN111194487B/en active Active
- 2018-08-27 JP JP2019544434A patent/JP7128828B2/en active Active
-
2020
- 2020-03-28 PH PH12020550174A patent/PH12020550174A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101542772A (en) * | 2007-02-01 | 2009-09-23 | 丰田自动车株式会社 | Electric storage device |
| CN102593388A (en) * | 2010-12-04 | 2012-07-18 | 三洋电机株式会社 | Battery pack and vehicle including the same |
| JP2013055070A (en) * | 2012-12-19 | 2013-03-21 | Sanyo Electric Co Ltd | Battery pack |
| CN104300098A (en) * | 2014-10-10 | 2015-01-21 | 浙江新大力电光源集团股份有限公司 | Vibration-proof storage battery shell |
Also Published As
| Publication number | Publication date |
|---|---|
| PH12020550174A1 (en) | 2021-03-01 |
| JP7128828B2 (en) | 2022-08-31 |
| WO2019065033A1 (en) | 2019-04-04 |
| JPWO2019065033A1 (en) | 2020-11-05 |
| CN111194487A (en) | 2020-05-22 |
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