JP5968721B2 - Storage battery storage box and storage battery storage unit using this storage box - Google Patents

Description

  The present invention relates to a storage battery storage box for storing a plurality of storage batteries between a bottom plate and an upper plate, and a storage battery storage unit using the storage box.

2. Description of the Related Art Conventionally, an assembled battery is known that includes a storage battery storage box that stores a plurality of storage batteries between a bottom plate and an upper plate, and is configured by stacking the storage battery storage boxes in multiple stages. The storage battery storage box is formed in a box made of a steel plate or steel material and having an opening in only one direction, and a plurality of storage batteries are placed in close contact with the box. At that time, the storage battery is in a state in which the front part to which the positive electrode terminal, the negative electrode terminal, the safety valve and the like are attached protrudes from the opening of the box. Each storage battery loaded in this manner can be held at the front by a stopper.
In general, storage battery storage boxes are used in a stacked manner, and the weight of the storage battery itself is large (by the way, for example, the storage battery used in FIG. Steel plates and steel materials constituting the storage battery storage box are required to have a certain strength. In particular, the industrial battery packs covered in this case are often used for emergency backups and backups in case of disasters such as starting up private power generators. It must be able to withstand even a strong impact.

Apart from this, the storage battery has a characteristic that when its end of life approaches, the side surface (the surface on which the positive electrode terminal, the negative electrode terminal, the control valve, etc. are not attached) swells. However, if this is allowed, there is a risk that the storage battery cannot be extracted from the storage battery storage box during battery replacement. Therefore, the storage battery storage box uses a member having a sufficient thickness (strength) that does not deform so that the steel plate can withstand this expansion force.
However, such a structure of the storage battery storage box significantly reduces the heat dissipation efficiency of the battery itself. The control valve type storage battery taken up in this case has the characteristics that the calorific value is large and the heat capacity is small as compared with the conventional liquid storage battery. Therefore, if you continue to use it with low heat dissipation efficiency, the lifespan will be shortened or the heat will escape (the vicious cycle in which the charging current increases at an accelerated rate and the temperature rises indefinitely when the battery temperature becomes very high). It may cause In other words, loading a plurality of storage batteries in close contact and using a thick steel plate to maintain the strength of the box are negative factors for the battery.
In this way, it is very difficult to achieve both high strength of the storage battery box and the ability to withstand external impact and expansion force from the outside, and to improve (high) the heat dissipation efficiency of the storage battery. Yes.
As existing examples, there are known cases in which improvement is made by focusing only on either the strength of the storage battery box or the heat dissipation of the storage battery (see, for example, Patent Documents 1 and 2).

JP 2004-1034889 A JP 2002-289161 A

However, Patent Document 1 can form a stable and robust assembly that can withstand a large load weight with the left and right front extension plate portions having high mechanical strength, but does not mention how to maintain the gap. Therefore, it is difficult to ensure sufficient ventilation (cooling by outside air).
Patent Document 2 describes a structure in which a gap is provided outside the “frame” into which the battery is inserted and is cooled by outside air. However, the opening of the gap is provided only in the front direction of the assembled battery. Therefore, it cannot be said that sufficient ventilation (cooling by outside air) is secured. Moreover, since there is a gap on the outside of the frame, it is difficult to cope with a large external impact such as seismic force.

  The present invention has been made in view of the above-described circumstances, and provides a storage battery storage box capable of improving physical strength and improving heat dissipation of the storage battery, and a storage battery storage unit using the storage box. It is in.

In order to solve the above-described problem, the present invention provides a storage battery storage box for storing a plurality of storage batteries between a bottom plate and an upper plate, and extends vertically between the storage batteries arranged side by side to connect the bottom plate and the upper plate. It has a reinforcing member that penetrates and is joined to each plate to improve the strength of the storage battery storage box. The reinforcing member is in contact with the left and right storage batteries and penetrates up and down, with the lower surface and the upper surface being openings. is formed in a cylindrical shape, the air introduced from the lower surface of the opening, characterized in Rukoto is discharged from the opening of the top surface.
According to this configuration, the physical strength of the storage battery storage box is improved by the reinforcing member, and the heat dissipation of the storage battery can be increased because the reinforcing member has a cylindrical shape.

In the above configuration, the reinforcing member passes through a slit provided in the bottom plate and the top plate, and is joined to the bottom plate by welding below the bottom plate, and the top plate above the top plate. They may be joined by welding.
According to this configuration, since the reinforcing member can be welded only outside the storage battery storage box, the welding operation can be easily performed.

Moreover, the said structure WHEREIN: You may make the said reinforcement member into the divergent shape which spreads as a lower part goes below.
According to this structure, it becomes easy to introduce the lower air.
In the storage battery storage unit formed by connecting the storage battery storage boxes in multiple stages, a gap may be formed between the storage battery storage boxes when the storage battery storage boxes are connected in multiple stages.
According to this configuration, the heat of the storage battery released into the gap can be actively drawn into the reinforcing member and dissipated.

In the above structure, the lower portion of the reinforcing member provided in each battery containing box, Ri upper reinforcing member provided to the battery storage box which is connected to one level lower is input Tteo, provided in each battery containing box The reinforcing member to be formed may form a heat radiation tower penetrating from the lowermost stage to the uppermost stage.
According to this configuration, it is possible to efficiently dissipate heat while suppressing the situation where the heat effect of the lower stage reaches the upper stage. Moreover, the heat dissipation can be further improved by effectively utilizing the chimney effect.

  In the present invention, there is a reinforcing member that extends vertically between the side-by-side storage batteries, passes through the bottom plate and the top plate of the storage battery storage box, and is joined to each plate to improve the strength of the storage battery storage box. Is formed in a cylindrical shape that is in contact with the left and right storage batteries and penetrates vertically, so that the physical strength of the storage battery storage box can be improved and the heat dissipation of the storage battery can be enhanced by the reinforcing member.

It is a perspective view of an assembled battery provided with the storage battery storage box which concerns on embodiment of this invention. It is a perspective view of a storage battery storage unit. It is a perspective view of the base of a storage battery storage unit. It is a perspective view which shows a storage battery storage box with a storage battery. It is a perspective view of a storage battery storage box. It is a perspective view of a reinforcing member. It is a figure which shows the upper and lower reinforcement member at the time of accumulating a storage battery storage box. It is the figure which looked at the storage battery storage box stacked up and down from the side.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows an assembled battery including a storage battery storage box according to an embodiment of the present invention.
This assembled battery 10 is an industrial assembled battery used for backup in the event of a disaster, such as an emergency power supply or a private power generator, and includes a storage battery storage unit 20 that stores a plurality of storage batteries (corresponding to single cells) 11. I have.
FIG. 2 shows the storage battery storage unit 20.
As shown in FIGS. 1 and 2, the storage battery storage unit 20 includes a base (also referred to as a channel base) 21 installed on the floor, and a plurality of storage batteries 11 stacked side by side on the base 21. A storage battery storage box 22, the base 21 is fixed to the floor with anchor bolts 30, and the storage battery storage box 22 is stacked up and down in multiple stages, and its four corners are connected by connecting members 33 made of bolts and nuts. ing. In this embodiment, the storage battery storage box 22 has four stages, and the storage battery 10 is stored in each storage battery storage box 22, thereby configuring the assembled battery 10 that stores 24 storage batteries 11. However, the present invention is not limited to this configuration, and the number of storage battery storage boxes 22 and the number of storage batteries 11 can be changed as appropriate.

FIG. 3 is a perspective view of the base 21.
The base 21 is made of H-shaped steel, and a pair of front and rear long side portions 21A and 21B and a pair of left and right short side portions 21C and 21D are welded to form a rectangular frame member when viewed from above. It is configured to be connected together. Openings 21K are respectively formed between the short sides 21C and 21D and the long sides 21A and 21B, and ambient air can freely enter and leave the inner space 21R of the base 21 through these openings 21K. .
As shown in FIG. 1, by placing a storage battery storage box 22 on the base 21, the storage battery storage box 22 is arranged away from the floor, and ambient air is easily introduced below the storage battery storage box 22. It is possible to make it.

FIG. 4 is a view showing the storage battery storage box 22 together with the storage battery 11, and FIG. 5 is a view showing a state in which the storage battery 11 is removed.
As shown in FIGS. 4 and 5, the storage battery storage box 22 includes a rectangular bottom plate 23, an upper plate 24 disposed above the bottom plate 23 with a space therebetween, and between the left and right ends of the bottom plate 23 and the upper plate 24. And a pair of left and right side plates 25 that connect each other, and is formed in a box shape having a front surface opening accommodating portion 22A (FIG. 2) whose front surface is open. Each plate 23-25 which comprises this storage battery storage box 22 is manufactured with metal plates, such as iron and stainless steel.
A steel pedestal 23A is welded to the lower surface of the bottom plate 23 of the storage battery storage box 22, a steel pedestal receiver 24A is welded to the upper surface of the upper plate 24, and a pair of upper and lower sides is attached to the outer surfaces of the left and right side plates 25. A steel bridging plate 25A is welded so as to connect the base 23A and the base 24A.
Each storage battery storage box 22 has the same configuration, and the lowermost storage battery storage box 22 has an inner space 21R (see FIG. 3) surrounded by the long side portions 21A and 21B and the short side portions 21C and 21D of the base 21 from above. It connects with the base 21 so that it may cover.

The storage battery 11 is a control valve storage battery used for an emergency power supply or the like, and constitutes a rectangular parallelepiped battery case 12 that accommodates electrodes and an electrolytic solution, and a front portion of the battery case 12 as shown in FIG. A front plate portion (battery lid) 13 is provided. Further, a positive terminal 15A, a negative terminal 15B, and a safety valve 15C are attached to the front plate portion (battery lid) 13. In the following description, the positive terminal 15A and the negative terminal 15B are referred to as terminals 15 when it is not necessary to distinguish between them.
As shown in FIG. 4, the storage battery 11 is inserted into the storage battery storage box 22, the front plate portion (battery lid) 13 to which the terminals 15 and the like are attached is directed to the front of the storage battery storage box 22, and the storage battery It is in a state of protruding forward from the storage box 22. Each storage battery 11 is pressed from the front by a holding plate (also referred to as a stopper) 31 that is bolted to the bottom plate 23 and the upper plate 24 of the storage battery storage box 22, and the storage battery 11 is prevented from protruding due to an earthquake or a fall. The A battery in which a plurality of storage batteries 11 are loaded in a single storage battery storage box 22 and fixed by a pressing plate 31 is referred to as a “unit storage battery”.
When the assembled battery 10 is used, the terminals 15 of the adjacent storage batteries 11 are electrically connected by a connection plate (not shown) that is a conductor. As a result, a required number of storage batteries 11 are connected in series or in parallel to form a “assembled battery” that secures a required voltage and a required capacity.

As shown in FIGS. 4 and 5, the storage battery storage box 22 of the present embodiment extends vertically between the storage batteries 11 side by side and is integrally joined to the bottom plate 23 and the upper plate 24 and penetrates vertically. A cylindrical reinforcing member 71 is provided.
The reinforcing member 71 is disposed with a space between the side plates 25 of the storage battery storage box 22. In this embodiment, the two reinforcing members 71 are arranged so that the two storage batteries 11 and the reinforcing members 71 are alternately disposed. It is arranged.
FIG. 6 shows the reinforcing member 71. The reinforcing member 71 is formed in a cylindrical shape in which a metal plate is bent and welded, and the upper surface and the lower surface are openings 71A and 71B. The metal plate is the same steel plate as the storage battery storage box 22, or copper, aluminum. Various metal materials such as alloys and magnesium alloys are used.

The reinforcing member 71 is formed in a cylindrical shape having a rectangular horizontal cross section, and a pair of long side plates forms left and right side plates 72, and a pair of short side plates forms a front plate 73 and a back plate 74. The lower portions of the left and right side plates 72 are formed in a divergent shape (funnel shape) that expands downward, and the lower opening 71B is larger than the upper opening 71A.
The left and right side plates 72 are formed with a number of punching holes 77, which are opening holes, and are processed to be advantageous for heat dissipation. On the other hand, the front plate 73 and the back plate 74 of the reinforcing member 71 are formed of vertical plates without punching holes. The steel plate (metal plate) used for the reinforcing member 71 is selected to have a thickness that can withstand the expansion force from the inside of the storage battery 11 at the end of its life.
The height HX (see FIG. 6) of the reinforcing member 71 is longer than the separation distance H1 (see FIG. 5) between the bottom plate 23 and the top plate 24 of the storage battery storage box 22, and as shown in FIG. The storage battery storage box 22 is mounted so as to penetrate through the slits 23S and 24S provided at positions where the bottom plate 23 and the upper plate 24 face each other.

In this case, the lower portion 71 </ b> L that expands toward the end of the reinforcing member 71 is joined to the bottom plate 23 by welding in a state of protruding downward from the bottom plate 23, and the upper portion 71 </ b> U of the reinforcing member 71 also protrudes upward from the upper plate 24. Then, it is joined to the upper plate 24 by welding. More specifically, the lower portion 71L of the reinforcing member 71 is joined by fillet welding along the slit 23S of the bottom plate 23 from below the bottom plate 23 of the storage battery storage box 22, and the upper portion 71U of the reinforcing member 71 is Joined by fillet welding from above the upper plate 24 of the storage battery storage box 22 along the slit 23S of the upper plate 24.
In this way, the reinforcing member 71 is disposed so as to vertically penetrate the storage battery storage box 22, and the upper part and the lower part are both welded and integrated with the storage battery storage box 22. At this time, the lower opening 71 </ b> B serving as the lower surface of the reinforcing member 71 is flush with the lower surface of the storage battery housing box 22, and the upper opening 71 </ b> A serving as the upper surface of the reinforcing member 71 is from the upper surface of the storage battery housing box 22. Slightly protruding. In this case, a sufficient welding length can be secured to sufficiently secure the connection strength between the bottom plate 23 and the top plate 24, and the welding operation can be performed from below the bottom plate 23 and above the top plate 24. Since it is good, the welding work becomes easy.

  Further, since the reinforcing member 71 spreads toward the end, a large opening can be formed below the reinforcing member 71 and air can be easily introduced. Further, the storage battery storage box 22 of this configuration has a structure in which the front surface is greatly opened, and thus it is difficult to ensure the strength of the box, but the opening of the front opening storage portion 22A is finely divided into left and right by the reinforcing member 71. And since each reinforcement member 71 functions as a pillar of a partition, it is possible to improve the physical strength of the storage battery storage box 22.

In this configuration, as shown in FIG. 4, two storage batteries 11 are inserted side by side between the left and right reinforcing members 71, and between each reinforcing member 71 and the side plate 25 of the storage battery storage box 22, Two storage batteries 11 are inserted side by side.
In this case, the storage batteries 11 at the left and right ends are in contact with the side plate 25 and are in a position that is relatively advantageous for heat dissipation, and the remaining four storage batteries 11 are in contact with any one of the reinforcing members 71 on either side. Therefore, heat dissipation from here can be expected. That is, since the reinforcing member 71 has a cylindrical shape penetrating vertically, the reinforcing member 71 functions as a chimney for discharging the heat collected by the reinforcing member 71 upward. Moreover, since the punching hole 77 is opened in the contact surface with the storage battery 11, the heat dissipation effect is further enhanced.

As shown in FIG. 2, when the storage battery storage boxes 22 are stacked, the reinforcing members 71 of the storage battery storage boxes 22 are arranged vertically. Here, FIG. 7 is a view showing the upper and lower reinforcing members 71 when the storage battery storage boxes 22 are stacked. In FIGS. 7 and 1, the flow of air (hot air) is indicated by arrows.
As shown in FIG. 7, when the storage battery storage boxes 22 are stacked, the upper portion 71U of the lower-stage reinforcing member 71 enters the lower portion 71L of the upper-stage reinforcing member 71. As a result, it can be seen that a long chimney (see FIG. 2) penetrating all from the bottom to the top, that is, the heat radiation tower 101 is formed.
As is well known, a chimney has a chimney effect (an effect of guiding exhaust upward by the principle of ascending current), and this chimney effect increases as the length increases. Therefore, more efficient heat dissipation can be expected when assembled in a mode that can be actually used as the assembled battery 10 than when the unit storage battery is used alone. In addition, since the lower end of the radiation tower 101 opens into the inner space 21R (see FIG. 3) of the base 21, ambient air can be smoothly introduced into the radiation tower 101.

FIG. 8 is a side view of the storage battery storage boxes 22 stacked up and down.
As shown in FIG. 8, between the upper plate 24 of the lower storage battery storage box 22 and the bottom plate 23 of the upper storage battery storage box 22, a steel base 24A and a base 23A are arranged. Therefore, a gap of several centimeters (hereinafter referred to as a side opening gap) 27 that opens to the left and right sides is formed. Since the side opening gap 27 faces sideways, it is difficult to ventilate and heat is easily trapped only by opening the gap 27.
On the other hand, in this structure, the ventilation property of the side opening clearance 27 is improved by the reinforcing member 71 forming the chimney. As shown in FIG. 7, since the upper portion 71U of the lower-stage reinforcing member 71 enters the lower portion 71L of the upper-stage reinforcing member 71 that is expanded in a funnel shape, a gap 71S is formed therebetween. Inside the reinforcing member 71, an upward air flow is generated by heat radiation from the storage battery 11 that has passed through the punching hole 77, so that the atmospheric pressure is lower than the side opening gap 27 between the storage battery storage boxes 22. Therefore, the heat trapped in the side opening gap 27 is actively drawn into the reinforcing member 71 through the side opening gap 27.
That is, the gap 71S acts as an air inlet between the upper and lower storage battery storage boxes 22. In addition, since the opening 21K (see FIGS. 2 and 3) is also provided in the base 21 of the storage battery storage unit 20, air enters from here and does not hinder the flow of the updraft in the reinforcing member 71 and is smooth. Can be exhausted.

  As described above, according to the present embodiment, the battery 11 extends vertically between the storage batteries 11, penetrates the bottom plate 23 and the top plate 24 of the storage battery storage box 22, and is joined to the plates 23 and 24. Since the reinforcing member 71 has a reinforcing member 71 for improving the strength of the storage battery storage box 22, the reinforcing member 71 is formed in a cylindrical shape that is in contact with the left and right storage batteries 11 and penetrates vertically. The physical strength of the storage battery 11 is improved, and the heat dissipation of the storage battery 11 can be improved because the reinforcing member 71 has a cylindrical shape. In addition, since it does not rely on a heat-dissipating electric fan or cooling material, there is no risk of failure or deterioration over time, and a stable effect can be expected over a long period of time.

Moreover, the reinforcing member 71 passes through the slits 23S and 24S provided in the bottom plate 23 and the upper plate 24 of the storage battery storage box 22, and is joined to the bottom plate 23 by welding below the bottom plate 23, and above the upper plate 24. Therefore, the reinforcing member 71 can be welded only outside the storage battery storage box 22, and the welding operation can be easily performed.
Further, the storage batteries 11 at the left and right ends are in contact with the side plates 25 of the storage battery storage box 22, and the storage battery 11 disposed inside the storage batteries 11 at both the left and right ends is in contact with the reinforcing member 71. 11 can be efficiently radiated, and variations in temperature can be suppressed.

Furthermore, since the reinforcing member 71 is formed in a divergent shape that expands as the lower portion goes downward, it is easy to introduce the lower air.
Moreover, since a gap (side opening gap) 27 that opens to the side is formed between the upper and lower storage battery storage boxes 22, the heat of the storage battery 11 that is released into the gap 27 is transferred to the inside of the reinforcing member 71. Can be actively drawn into and dissipated.
In addition, the lower portion 71L of the reinforcing member 71 is provided with an upper portion 71U of the reinforcing member 71 provided in the storage battery storage box 22 that is connected one step below, so as to form a heat radiation tower 101 that penetrates from the lowest level to the highest level. Therefore, it is possible to suppress the situation where the lower stage heat influence reaches the upper stage and to dissipate heat more efficiently. Moreover, the heat dissipation can be further improved by effectively utilizing the chimney effect.

Each embodiment mentioned above shows one mode of the present invention to the last, and can be arbitrarily modified and applied without departing from the gist of the present invention.
For example, in the above-described embodiment, the case where the punching hole 77 is formed in the side plate 72 of the reinforcing member 71 has been described. However, the present invention is not limited to this, and other processing effective for heat dissipation may be performed, or desired heat dissipation The hole such as the punching hole 77 may be omitted as long as the property can be secured.
In the above-described embodiment, the case where the two storage batteries 11 and the reinforcing members 71 are alternately arranged has been described. However, the present invention is not limited to this, and the number and positions of the reinforcing members 71 are changed according to the design at that time. May be.
Further, in the above-described embodiment, the case where the reinforcing member 71 has a divergent shape has been described. However, the shape is not limited to this, and the shape is changed to the same rectangular cross section within a range in which desired strength and heat dissipation can be secured. You may do it.
Moreover, although the case where the reinforcing member 71 is joined to the bottom plate 23 and the top plate 24 by welding has been described in the above-described embodiment, the reinforcing member 71 may be joined by a method other than welding.

DESCRIPTION OF SYMBOLS 10 Assembly battery 11 Storage battery 20 Storage battery storage unit 22 Storage battery storage box 22A Front opening storage part 23 Bottom plate 23S, 24S Slit 24 Top plate 25 Side plate 27 Side opening clearance 71 Reinforcement member 101 Heat radiation tower

Claims (5)

In the storage battery storage box for storing a plurality of storage batteries between the bottom plate and the top plate,
Extending vertically between the storage batteries side by side, penetrating the bottom plate and the top plate, having a reinforcing member joined to each plate to improve the strength of the storage battery storage box,
The reinforcing member is in contact with the left and right storage batteries and penetrates up and down, and is formed in a cylindrical shape having an opening on the lower surface and the upper surface, and air introduced from the opening on the lower surface passes through the opening on the upper surface. the discharged battery storage box which is characterized in Rukoto. In the storage battery storage box according to claim 1,
The reinforcing member passes through a slit provided in the bottom plate and the top plate, is joined to the bottom plate by welding below the bottom plate, and is joined to the top plate by welding above the top plate. A storage battery storage box. In the storage battery storage box according to claim 1 or 2,
The storage battery storage box, wherein the reinforcing member has a divergent shape that expands as the lower part goes downward.   In the storage battery storage unit formed by connecting the storage battery storage boxes according to any one of claims 1 to 3 in multiple stages, a gap is formed between the storage battery storage boxes when the storage battery storage boxes are connected in multiple stages. A storage battery storage unit. In the storage battery storage unit or the storage battery storage unit according to claim 4, wherein the storage battery storage box according to any one of claims 1 to 3 is connected in multiple stages.
The lower portion of the reinforcing member provided in each battery containing box, Ri upper inlet Tteo reinforcing member provided to the battery storage box which is connected to one level lower, the reinforcing member provided in each battery storage box is, battery accommodating unit, characterized that you have to form a radiating column penetrating from the bottom to the top.

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