Battery storage box

Abstract

To provide a storage battery housing box that, even when some of storage batteries have a temperature different from that of other storage batteries, can perform, to the storage batteries, temperature control different from that of the other storage batteries, and can perform accurate temperature control.SOLUTION: A storage battery housing box in which a plurality of storage batteries B are housed in a box body whose four sides are closed by side plates 4 or doors 2 and 3 and whose bottom and top are also closed, includes shelf boards 7 which separate an internal storage battery housing space S into a plurality of regions vertically, and exhaust ducts 9 respectively provided in the divided housing portions Sa separated by the shelf boards 7, and exhaust fans 12 respectively provided in the exhaust ducts 9.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to a battery storage box that stores a large number of batteries. [Background technology]

[0002] The installation of storage batteries is becoming widespread as a means of storing privately generated electricity such as solar power generation, and as an emergency power source in the event of a disaster. Since the storage batteries used for such purposes are integrated into a large number of storage batteries, a storage battery storage box is used to store them all together. As disclosed in Patent Document 1, for example, a conventional battery storage box is configured with a ventilation device attached to the top panel, which introduces outside air from below and forcibly exhausts the warm air heated by the heat generated by the battery above the top panel. Because the battery generates heat during discharging or charging, the battery maintains its functionality by introducing outside air in this way to cool it. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2017-118609 Summary of the Invention [Problem to be solved by the invention]

[0004] As mentioned above, conventional battery storage boxes have a structure in which outside air is introduced from the bottom and exhausted at the top, so even if the entire battery can be cooled, it is not possible to change the air flow or strength locally. As a result, if the heat generated by each battery is not uniform and some batteries become hot, it is not possible to cool the heat-generating areas appropriately.

[0005] In view of these problems, the present invention aims to provide a battery storage box that can perform temperature control on some batteries differently from the other batteries, even if the batteries reach a different temperature from the other batteries, thereby enabling accurate temperature control. [Means for solving the problem]

[0006] In order to solve the above problem, the invention of claim 1 is a battery storage box that stores multiple batteries in a box body that is closed on four peripheral sides by closing plates or doors and also has a bottom and top that are closed, and the box body has shelves that vertically divide the internal battery storage space into multiple sections, and a storage compartment that is provided for each of the divided storage sections separated by the shelves. , and exhaust air to the outside of the battery storage box. The air conditioner is characterized by having exhaust ducts and exhaust fans provided in each of the exhaust ducts. According to this configuration, an exhaust duct and an exhaust fan are provided for each divided storage section that divides the storage battery storage space, making it possible to manage the temperature for each divided space. Even if the temperature of some storage batteries rises more than that of other storage batteries, the temperature of only the divided storage section that houses that storage battery can be controlled differently from the others, making it possible to control the temperature accurately.

[0007] The invention of claim 2 is characterized in that, in the configuration described in claim 1, it has a heater installed on the shelf to heat the stored storage batteries, a temperature sensor installed in each divided storage section, and a control unit installed in each divided storage section to control the heater and exhaust fan, and the control unit controls the heater and exhaust fan so that the temperature remains within a predetermined range. According to this configuration, temperature control can be performed for both low and high temperatures, and the temperature of each divided storage section can be controlled within a predetermined range, thereby enabling accurate temperature management for each storage battery.

[0008] The invention of claim 3 is characterized in that, in the configuration described in claim 1 or 2, an exhaust duct and an exhaust fan are arranged at the back, a door is arranged at the front, and blocking plates are arranged at the left and right sides, and the backs of the blocking plates are covered with insulating material. With this configuration, the rear surfaces of the left and right side panels are covered with heat insulating material, making it less susceptible to the effects of the ambient temperature, thereby enabling efficient temperature management. [Effects of the Invention]

[0009] According to the present invention, an exhaust duct and an exhaust fan are provided for each divided storage section that divides the storage battery storage space, making it possible to manage the temperature for each divided space. Even if the temperature of some storage batteries rises more than that of other storage batteries, the temperature of only the divided storage section that houses those batteries can be controlled differently from the others, making it possible to control the temperature accurately. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view showing an example of a storage battery storage box according to the present invention with the front and back sides open. FIG. [Figure 2] 2 is a perspective view of the battery storage box of FIG. 1 as seen from the rear. FIG. [Figure 3] (a) is a front view of the state shown in FIG. 1, and (b) is a rear view. [Figure 4] FIG. 1 is a perspective view of the back when the back is closed. [Figure 5] FIG. 4 is a cross-sectional view taken along the line AA shown in FIG. [Figure 6] FIG. 2 is a partial perspective view of the battery storage box with the shelf removed. [Figure 7] FIG. [Figure 8] FIG. 10 is a partial perspective view of the battery storage box from the rear with the back panel removed. [Figure 9] FIG. 10 is an explanatory diagram showing the air flow inside the battery storage box. [Figure 10] FIG. 2 is a block diagram of a temperature control unit. [Figure 11] 10 is a flowchart showing a flow of temperature control. [Figure 12] FIG. 10 is a table showing the set temperature of the storage battery and the operating temperatures of the fan and heater. [Figure 13] FIG. 10 is a perspective view showing another example of a storage battery storage box with the front and back sides open. [Figure 14] FIG. 14 is a perspective view of the state of FIG. 13 as seen from behind. [Figure 15] 13A is a front view of the state shown in FIG. 13, and FIG. 13B is a rear view of the state shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] Embodiments of the present invention will be described in detail below with reference to the drawings. Figures 1 to 4 show an example of a storage battery storage box according to the present invention. Figures 1 and 2 are perspective views with the front and back open, with Figure 1 being a perspective view from the front and Figure 2 being a perspective view from the rear. Figure 3 shows a front view and a rear view in the state shown in Figure 1, and Figure 4 is a rear view with the back closed. As shown in the figure, the battery storage box 1 has a front door 2 and a rear door 3, allowing it to be opened and closed from the front and back, and side panels 4 are arranged on the left and right sides as closing panels, allowing it to be closed on all four sides. In addition, it has a top panel (not shown) under the roof 5 and a bottom panel 6 at the bottom, and the entire box is installed on a base 8. Inside, multiple shelves 7 are arranged, dividing the battery storage space S into multiple sections vertically. B indicates the stored batteries. In this example, the shelves 7 are arranged at equal intervals, and a configuration is shown in which a large number of storage batteries B of the same dimensions are stored.

[0012] Additionally, a closing frame 10 with an exhaust duct 9 attached is attached to each storage section Sa (hereinafter referred to as "divided storage section") divided by shelves 7 at the back of the battery storage space S. The exhaust ducts 9 attached to these closing frames 10 allow the air inside each divided storage section Sa to be exhausted. Additionally, the exhaust ducts 9 are bent downward so as to exhaust air downward.

[0013] On the other hand, a duct housing portion 3a is formed in the rear door 3 to bulge out and house the exhaust duct 9 that protrudes rearward from the blocking frame 10. The duct housing portion 3a is open at the bottom and is formed so that the exhaust air from the exhaust duct 9 can be released to the outside. In addition, multiple intake fans 15 are attached to the top surface of the base 8, which also serves as the bottom plate 6, and are configured to introduce outside air for cooling the storage battery through slit-shaped intake holes 8a formed on the peripheral side of the base 8.

[0014] Fig. 5 is a cross-sectional view taken along line AA, showing the state in which the storage battery B has been partially removed to expose the shelf board 7. Reference numeral 11 shown in Fig. 5 denotes a heater for heating the storage battery B, and plate-shaped heaters 11 are arranged on the shelf board 7, on which the storage battery B is placed. The heaters 11 are shaped to fit the size of the storage battery B to be stored, and one is placed for each storage battery B. An exhaust fan 12 is installed at the entrance of the exhaust duct 9 to forcibly exhaust air. Furthermore, heat insulating material 13 is attached to the inside of the left and right side plates 4. The heat insulating material 13 is arranged over almost the entire side plate 4.

[0015] Figure 6 is a partial perspective view of the battery storage box 1, showing the state in which the shelf 7 is pulled out forward. The front door 2, rear door 3, side panels 4, and battery B are omitted. The shelf 7 can be slid back and forth, making it easy to remove and store the battery B. As shown in Figure 6, battery storage box 1 has support posts 1a erected at its four corners, and left and right side panels 4 and closure frame 10 are attached to these support posts 1a with screws. Front door 2 and rear door 3 are also hinged to the support posts, and as will be described later, support plates 14 on which shelf boards 7 are placed and held are also fixed to the support posts 1a.

[0016] Figure 7 is an explanatory end view of the left end of the shelf board 7 as seen from the front, showing the relationship between the shelf board 7 and the side board 4. Support plates 14 on which the shelf board 7 is placed are attached to the inside of the left and right side boards 4. The support plates 14 are arranged in the front-to-rear direction so as to be in close contact with the side boards 4, and are screwed to the support posts 1a. The shelf board 7 is placed on these support plates 14 and is able to slide back and forth. In addition, strip-shaped packing (spacer) 7a is attached to the front and rear of the side of shelf board 7, and is configured to slide smoothly against heat insulating material 13 attached to side board 4.

[0017] Figure 8 is a partial perspective view of the battery storage box 1 as seen from the rear, showing one of the blocking frames 10 removed. The rear door 3 is omitted. As shown in Figure 8, the exhaust duct 9 is attached to a blocking frame 10 that is formed to fit the divided storage section Sa. This blocking frame 10 is formed in a quadrangular pyramid shape, and the cylindrical exhaust duct 9 is attached to its top.

[0018] Figure 9 is an explanatory diagram showing the flow of air flowing inside the battery storage box 1. It is a cross-sectional explanatory diagram seen from a side, vertically cutting the center of the left duct housing section 3a shown in Figure 4, and the air flow is indicated by arrow P, representing one divided housing section Sa. As shown in the figure, air is taken in through intake holes 8a provided around the base 8 by intake fan 15 provided on bottom plate 6, passes through the space between front door 2 and shelf 7, rises, and is supplied to each divided storage section Sa, flows from front to rear within divided storage section Sa, is sucked in by each exhaust fan 12, and is released to the outside through exhaust duct 9. In this way, storage battery B is cooled.

[0019] 10 shows a block diagram of the temperature control section 20 that controls the temperature of the divided storage section Sa. This temperature control section 20 is installed for each exhaust duct 9, that is, for each divided storage section Sa. As shown in FIG. 10, the temperature control unit 20 is installed near the exhaust fan 12 inside the divided storage unit Sa and includes a temperature sensor 21 that measures the temperature of the divided storage unit Sa, a monitoring unit 22 that obtains temperature information from the temperature sensor 21, a heater switch unit 23 that turns on / off the individual heaters 11 installed at four locations on the shelf 7, a fan switch unit 24 that controls the exhaust fan 12 and the intake fan 15, and a control unit 25 equipped with a CPU that receives information from the temperature sensor 21 and controls the heaters 11, the exhaust fan 12, and the intake fan 15.

[0020] The temperature control of the battery storage box 1 by the temperature control unit 20 is performed as follows. 11 is a flowchart showing the flow of control, and the control operation of the temperature control unit 20 will be described with reference to Fig. 11. The control is carried out by the control unit 25. Based on the temperature information (S1) obtained by the monitoring unit 22 from the temperature sensor 21, it is determined whether the temperature is below 0°C (S2). If it is below 0°C (YES in S2), the heater 11 is turned on to raise the temperature. The same control of the heater 11 is performed for all four shelves installed on the common shelf 7. This control is performed until the temperature exceeds 0°C, and if it does (NO in S2), the heater 11 is turned off (S4).

[0021] If the temperature exceeds 0°C, it is next determined whether it is above or below 30°C (S5). If it is above 30°C (YES in S5), the exhaust fan 12 (and intake fan 15) is turned on (S6). If it is below 30°C, the exhaust fan 12 is turned off (S7). The temperature is measured by the temperature sensor 21 at regular intervals, and this control is repeatedly performed for each divided storage section Sa. The intake fan 15 is controlled so as to be turned on when any one of the exhaust fans 12 is on, and turned off when all the exhaust fans 12 are off.

[0022] 12 shows the relationship between the set temperature of storage battery B and the operating temperatures of heater 11 and exhaust fan 12. As shown in this diagram, if the temperature at which storage battery B operates well is set to, for example, 0°C to 50°C, the operating temperatures of heater 11 and exhaust fan 12 are set relative to this set temperature, and the above-mentioned control is performed. Although the heater 11 and the exhaust fan 12 are controlled by simple on / off control here, they may also be controlled by changing the temperature of the heater 11 and the wind power of the exhaust fan 12.

[0023] In this way, an exhaust duct 9 and an exhaust fan 12 are provided for each divided storage section Sa obtained by dividing the storage battery storage space S, so that it is possible to control the temperature for each divided space. Even if the temperature of some storage batteries B rises more than that of other storage batteries B, it is possible to perform temperature control different from that of the others for only the divided storage section Sa that stores those storage batteries B, thereby enabling accurate temperature control. Furthermore, since the heater 11 is provided, temperature control can be performed for both low and high temperatures, the temperature of each divided storage section Sa can be controlled within a predetermined range, and accurate temperature management can be performed for each storage battery B. Furthermore, since the rear surfaces of the left and right side plates 4 are covered with heat insulating material 13, the temperature is less affected by the ambient temperature, allowing for efficient temperature control.

[0024] Figures 13 to 15 show configurations in which the size of the divided storage section Sa of the battery storage box 1 has been changed. Since there are multiple sizes of storage batteries B, larger storage batteries B can be stored by enlarging the divided storage section Sa. Figures 13 and 14 are perspective views with the front door 2 and rear door 3 open, with Figure 13 being a perspective view from the front and Figure 14 being a perspective view from the rear. Figure 15(a) shows a front view of the state in Figure 13, and Figure 15(b) shows a rear view of the state in Figure 13. In this embodiment, one shelf 7 is removed, and the central divided storage section Sa is twice the size of the others. In addition, in accordance with this change in the divided storage section Sa, the corresponding closing frame 10 on the back is also changed to a new closing frame 10a. The new blocking frame 10a is composed of the blocking frame 10 of the above-mentioned form and a blocking plate 17 of the same size as the blocking frame 10 but without an exhaust duct, and blocks the enlarged divided storage section Sa. When the size of the divided storage section Sa is changed in this way, the size of the blocking frame 10 is also changed.

[0025] In this case, since one shelf is simply removed from the configuration in Figure 1 to make the divided storage section Sa twice the size of the others, it is also possible to close it using two of the closing frames 10 equipped with the exhaust fans 12 used in Figure 1. In this case, two exhaust ducts 9 are placed in the common divided storage section Sa, but they only need to be controlled in the same way. However, if the divided storage section Sa is of a different size, the closing frame 10 is made to fit that size. In this way, the size of the divided storage section Sa can be changed to match the size of the storage battery B, and even if the size is changed, good temperature control can still be performed.

[0026] In the above embodiment, the heat insulating material 13 is disposed only on the left and right side plates 4, but the heat insulating material 13 may also be disposed on the rear surface of the shelf plate 7, the rear surface of the front door 2, and the like. Furthermore, although the present invention is configured to introduce outside air from the base 8, an intake hole may be provided in the front door 2 so that outside air can be introduced from the front. [Explanation of symbols]

[0027] 1·· Battery storage box, 2·· Front door, 3·· Rear door, 4·· Side panel (blocking plate), 7·· Shelf, 8·· Base, 9· Exhaust duct, 10·· Blocking frame, 11·· Heater, 12·· Exhaust fan, 13·· Heat insulation material, 14·· Support plate, 15·· Intake fan, 20·· Temperature control unit, 21·· Temperature sensor, 25·· Control unit, S·· Battery storage space, Sa·· Divided storage section, B·· Battery.

Claims

1. A battery storage box that stores a plurality of batteries in a box body that is closed on four peripheral sides by closing plates or doors and whose bottom and top are also closed, Shelves that separate the internal battery storage space into multiple sections in the vertical direction, an exhaust duct provided in each divided storage section separated by the shelf board, the exhaust duct exhausting air to the outside of the battery storage box; an exhaust fan provided in each of the exhaust ducts.

2. a heater installed on the shelf to heat the stored storage battery; a temperature sensor installed in each divided storage section; a control unit provided for each divided storage unit to control the heater and the exhaust fan, 2. The battery storage box according to claim 1, wherein the control unit controls the heater and the exhaust fan so that the temperature is within a predetermined range.

3. The exhaust duct and the exhaust fan are arranged on the back, the door is arranged on the front, and the closing plates are arranged on the left and right sides, 3. The battery storage box according to claim 1, wherein the rear surface of the closing plate is covered with a heat insulating material.

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