JP2000223092A - Battery package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery package capable of not only preventing the ceiling part of a module battery from getting a high temperature due to stagnant air in a gap between the upper part and the lower part of each module battery, but also preventing incoming heat and outgoing heat from being unbalanced. SOLUTION: In a battery package 1 to store a rack in which plural module batteries are stacked and disposed while a designated gap is provided between the upper surface of one module battery and the bottom surface of another module battery, an air inlet 2 is provided on a part on one wall surface at least corresponding to a module battery 4a on the lowermost step and an air outlet 3 is provided on the ceiling part, a guide plate 8 obliquely inclining upward in the direction of a wall surface opposite to the one wall surface mentioned above is provided between this wall surface and a wall surface in the vicinity of the top surface of a module battery 4b positioned on the second step from the uppermost step, and a designated gap is provided between the upper rim part of the guide plate 8 and the opposing wall surface mentioned above.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a battery package for accommodating a plurality of module batteries including a sodium-sulfur battery or the like in a battery system.

[0002]

2. Description of the Related Art A battery system is configured such that a plurality of module batteries each formed by connecting a predetermined number of unit cells are further connected and arranged on a mount, and the mount is stored in a battery package. FIGS. 19 (a), (b) and (c) show the outline of a general battery system, respectively.
(C) shows the internal structure of a general battery system. When such a battery system is installed indoors or outdoors, in the package of a high-temperature operated secondary battery such as a sodium-sulfur battery, it is necessary to efficiently discharge heat from the module battery to the outside of the package. Become.

[0003] In the case of a sodium-sulfur battery,
The charging stage is an endothermic reaction, while the discharging stage is an exothermic reaction, and in order to obtain high discharge efficiency, the temperature of the battery that has risen in the discharging stage falls to the value at the start of discharging in the charging stage. This is because it is necessary to obtain a heat balance for each cycle.

Conventionally, the radiation of heat from the module battery to the outside of the package is, for example, as shown in FIG. 2, by an intake port 2 provided at the lower part of the front and rear surfaces of the package 1 and an exhaust port 3 provided at the package ceiling. It was performed by natural ventilation or forced ventilation. In designing the battery package, the size of the intake port and the exhaust port, the exhaust air volume, and the like are determined after performing the heat ventilation design with respect to the amount of heat radiation from the module battery.

[0005]

However, in the conventional method, a vortex flows in the gap between the upper and lower sides of each module battery 4, and a heat stagnation portion is generated at the center of the gap, so that the ceiling of the module battery 4 has a high temperature. There was a case. This is a phenomenon caused by a small gap between the upper and lower sides of each module battery 4. However, even if the heat balance of the entire package is balanced, the heat balance of each module battery is lost. Was. On the other hand, it is difficult to increase the gap between the top and bottom of each module battery 4 from the viewpoint of installation space and the like because the entire battery system becomes large accordingly.

In addition, as shown in FIG. 3, a single intake port 2 is provided on the entire front door of the package 1 in order to promote the flow of air in the gap between the upper and lower sides of each module battery. As shown in the figure, corresponding to each module battery 4, each stage of the front door of the package 1
However, in any case, as shown in FIG. 4, interference occurs due to the rising air flow 6 on the back surface side, and therefore, the air flow 7 in the gap between the upper and lower module batteries located above is stagnant. As a result, there is a problem that a high-temperature portion is generated.

[0007] The present invention has been made in view of such a situation, and an object of the present invention is to suppress the airflow in a gap between the upper and lower sides of each module battery.
It is an object of the present invention to provide a battery package that can prevent a ceiling of a module battery from being heated to a high temperature, thereby preventing the heat balance from being lost.

[0008]

That is, according to the present invention, a pedestal in which a plurality of module batteries are stacked and arranged while providing a predetermined gap between the upper surface of one module battery and the bottom surface of another module battery. A battery package for housing the at least a portion of the one wall corresponding to the lowermost module battery has an intake port, a ceiling has an exhaust port, and a wall surface facing the one wall surface, A guide plate having an obliquely upward slope in the direction of the opposed wall surface is provided between at least the wall surface near the top surface of the module battery located at the second stage from the uppermost stage, and an upper edge portion of the guide plate and Provided is a battery package in which a predetermined distance is provided between the battery package and an opposing wall surface.

In the present invention, it is preferable that the guide plate is provided between the wall surface near the top surface of all the module batteries in the second and lower stages from the uppermost stage and the opposing wall surface.

Further, in the present invention, a single air inlet may be provided on the entire one wall surface, but an air inlet may be provided on a portion of the one wall surface corresponding to each module battery, In this case, it is preferable that a blocking plate is provided horizontally between the one wall surface and the wall surface near the bottom surface of each module battery.

Furthermore, the battery package of the present invention
It may be a package for a sodium-sulfur battery.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The battery package of the present invention
As shown in FIG. 1, at least a portion of one wall corresponding to the lowermost module battery 4 a has an intake port 2, has a ceiling with an exhaust port 3, and further has a wall surface facing the one wall surface. A guide plate 8 having an obliquely upward inclination in the direction of the opposite wall surface between at least the wall surface near the top surface of the module battery 4b located at the second stage from the uppermost stage;
Having. A predetermined interval is provided between the upper edge of the guide plate 8 and the opposing wall surface.

[0013] The more airflow from the upper module battery,
As shown in FIG. 1, by providing such a guide plate, the uppermost module battery 4 c where heat is most likely to stagnate and the uppermost module battery 2 c from the uppermost stage as shown in FIG. An exhaust passage for the airflow from the gap with the module battery 4b located in the eye is secured, and the heat in this portion can be effectively exhausted. Further, as shown in FIG. 5, if the guide plate 8 is similarly provided for a module battery located below, heat at the ceiling of each module battery can be effectively removed, which is more preferable. .

The reason why the guide plate 8 is installed obliquely upward is to effectively prevent interference between the rising airflows and to smoothly release the rising airflow from below to the upper side. It is preferable that the angle between the wall surface of the module battery 4 and the guide plate 8 with which the contact is made is 30 to 60 °.
The distance between the upper edge of the guide plate 8 and the wall surface of the package 1 is preferably 1/2 to 5/6 of the distance between the wall surface of the module battery 4 and the wall surface of the package 1. 1 /
If it is less than 2, the upward airflow from below is hindered,
If it exceeds 5/6, it is not possible to effectively prevent interference between the updrafts.

In the battery package of the present invention,
Since the heat inside the package is discharged using the updraft,
As shown in FIG. 1, it is necessary to provide an intake port 2 at least at the lower part of the package 1. From the viewpoint of more effectively discharging the heat generated from the module batteries 4 in each stage, as shown in FIG. A single air inlet 2 is provided on the entire wall surface of the package 1 or, as shown in FIG. Is more preferably provided.

As shown in FIG. 8, an intake port 2 is provided for each stage of the front door of the package 1.
If a blocking plate 9 is provided horizontally between the wall surface of the package 1 and the wall surface near the bottom surface of each module battery 4, the updraft 6 generated on the intake port 2 side of the module battery 4 is blocked,
It is more preferable that the air flow from the intake port 2 to the gap between the module batteries 4 becomes smooth, and the heat stagnation in the gap can be prevented.

Note that the battery package of the present invention has the same effect not only when storing a single base on which module batteries are stacked, but also when storing a plurality of bases on which module batteries are stacked. The same applies to a case in which a frame on which module batteries can be arranged not only vertically but also horizontally is stored.

As described above, by configuring a battery system using the battery package of the present invention,
Partial heat retention in the gap between the upper and lower module batteries can be effectively prevented, and the heat balance of a battery system using a sodium-sulfur battery or the like can be prevented. Further, in the battery package of the present invention, since the flow of the air flow inside is smooth, even if the interval between each module battery is made smaller than before, heat does not stay, and thus the battery system itself is downsized. It becomes possible.

[0019]

Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments, but the present invention is not limited to these embodiments.

Embodiment 1 As shown in FIG. 9, a heat discharge test was performed using a battery system 10 in which five module batteries each composed of a sodium-sulfur battery were stacked on a base and stored in a battery package 1. went.

The battery package 1 has a front door,
In order to correspond to each module battery 4, each stage of the front door of the package has an intake port 2, a wall facing the front door, and the second and third module batteries from the top. A guide plate 8 having an obliquely upward slope is provided between the guide plates 8 and the wall surfaces near the top surfaces of 4d and 4e, and further, an exhaust port 3 is provided on the ceiling. Further, a horizontal blocking plate 9 is provided between the front door and a wall surface near the bottom surface of each module battery 4. Upper edge of induction plate 8 and battery package 1
A distance corresponding to 電池 of the distance between the wall surface of the module battery 4 and the wall surface of the battery package 1 is provided between the first and second wall surfaces.

The heat discharge test was performed as follows. At an outside air temperature of 40 ° C., the heat value of the battery was adjusted to 3500 W, heat was discharged by natural ventilation, and the temperature distribution and airflow state in the battery package were examined. 10 and 11
2 shows the temperature distribution and the state of airflow in the battery package.

Example 2 A heat discharge test was performed in the same manner as in Example 1. However, in the battery package, Example 1 was used.
Unlike FIG. 8, as shown in FIG. 8, the guide plates 8 are provided for all the module batteries 4 in the second and lower stages from the uppermost stage.

A heat discharge test was performed under the same conditions as in Example 1, and the temperature distribution and airflow state in the battery package were examined. FIGS. 12 and 13 show the temperature distribution and the state of air flow in the battery package, respectively.

Comparative Example 1 A heat discharge test was performed in the same manner as in Example 1. However, in the battery package, Example 1 was used.
Unlike FIG. 3, as shown in FIG. 3, a single intake port 2 was provided on the entire wall surface of the package 1, and no guide plate and no blocking plate were provided.

A heat discharge test was performed under the same conditions as in Example 1, and the temperature distribution and the airflow state in the battery package were examined. FIG. 14 and FIG. 15 show the temperature distribution and the airflow state in the battery package, respectively.

Comparative Example 2 A heat discharge test was performed in the same manner as in Example 1. However, in the battery package, Example 1 was used.
In contrast, as shown in FIG. 16, no guide plate was provided.

A heat discharge test was performed under the same conditions as in Example 1 to examine the temperature distribution and the state of airflow in the battery package. FIGS. 17 and 18 show the temperature distribution and the state of airflow in the battery package, respectively.

(Results) Comparative Example 1 without a guide plate
14 and 17, as shown in FIGS. 14 and 17, heat stayed in the gap between the uppermost module battery and the module battery from the uppermost stage to the second stage, and a high-temperature portion was generated. In Examples 1 and 2, as shown in FIGS. 10 and 12, it can be seen that no high-temperature portion was generated and heat was effectively discharged. Further, in the second embodiment in which the guide plates are provided for all the module batteries in the second and lower stages from the top, the guide plates are provided only for the second and third module batteries in the top stage. 3 from the top, compared to Example 1
It can be seen that the retention of heat near the module battery in the tier is improved.

In Comparative Examples 1 and 2 in which the guide plate was not provided, as shown in FIGS. 15 and 18, a high-speed updraft from below caused the uppermost module battery and the second module battery to move between the uppermost module battery and the second module battery. Although airflow is stagnant in the gap, in Examples 1 and 2 in which the guide plate is provided, as shown in FIGS. 11 and 13, the speed of the upward airflow from below is reduced, and the airflow moves quickly. You can see that it is.

[0031]

According to the battery package of the present invention, the heat existing in the gap between the module batteries is effectively discharged to the outside of the package by the guide plate, so that partial heat accumulation in the package is prevented. Can be
It is possible to prevent the heat balance of a battery system using a sodium-sulfur battery or the like from being lost.

Furthermore, an air inlet is provided for each stage of the front door of the package so as to correspond to each module battery, and a wall provided with an air inlet of the package;
If a shut-off plate is installed horizontally between the bottom of each module battery and the wall near the bottom, the upward airflow generated on the intake side of the module battery is blocked, and the airflow from the intake port to the gap between each module battery is smooth. Therefore, heat stagnation in the gap can be prevented, and heat can be discharged out of the package more effectively.

Further, the battery package of the present invention
Since the flow of the air flow in the inside is smooth, even if the interval between each module battery is made smaller than before, heat does not stay, so that the battery system itself can be downsized.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an example of a battery package of the present invention.

FIG. 2 is a schematic sectional view showing an example of a conventional battery package.

FIG. 3 is a schematic sectional view showing another example of a conventional battery package.

FIG. 4 is a schematic sectional view showing still another example of a conventional battery package.

FIG. 5 is a schematic sectional view showing another example of the battery package of the present invention.

FIG. 6 is a schematic sectional view showing still another example of the battery package of the present invention.

FIG. 7 is a schematic sectional view showing still another example of the battery package of the present invention.

FIG. 8 is a schematic sectional view showing still another example of the battery package of the present invention.

FIG. 9 is a schematic sectional view showing still another example of the battery package of the present invention.

FIG. 10 is a schematic diagram showing a temperature distribution in the battery package of the present invention.

FIG. 11 is a schematic diagram showing a state of airflow in the battery package of the present invention.

FIG. 12 is a schematic diagram showing a temperature distribution in the battery package of the present invention.

FIG. 13 is a schematic diagram showing a state of airflow in the battery package of the present invention.

FIG. 14 is a schematic diagram showing a temperature distribution in a conventional battery package.

FIG. 15 is a schematic diagram showing a state of airflow in a conventional battery package.

FIG. 16 is a schematic sectional view showing still another example of a conventional battery package.

FIG. 17 is a schematic diagram showing a temperature distribution in a conventional battery package.

FIG. 18 is a schematic diagram showing a state of airflow in a conventional battery package.

19A is a plan view, FIG. 19B is a front view, and FIG. 19C is a side view showing the external shape of the battery system.

20A is a cross-sectional view taken along line AA ′ of FIG.
FIG. 19B is a sectional view taken along the line BB ′ of FIG.
FIG. 9B is a sectional view taken along line CC ′ of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Battery package, 2 ... Inlet, 3 ... Exhaust, 4 ...
Module battery, 6 ... updraft, 7 ... airflow, 8 ...
Induction plate, 9 ... Blocking plate, 10 ... Battery system.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hitoshi Kamiya 2-56, Suda-cho, Mizuho-ku, Nagoya-shi, Aichi Japan Insulator Co., Ltd. F-term (reference) 5H020 AA09 AS05 KK13 5H031 AA05 AA09 KK08

Claims (6)

[Claims] 1. A battery package for accommodating a base on which a plurality of module batteries are stacked while providing a predetermined gap between an upper surface of one module battery and a bottom surface of another module battery. An inlet port at least at a portion corresponding to the lowermost module battery on the wall surface, an exhaust port at the ceiling, and at least two walls from the top wall facing the one wall surface.
A guide plate having an obliquely upward slope in the direction of the opposing wall surface is provided between a wall surface near the top surface of the module battery located at the step, and an upper edge portion of the guide plate and the opposing wall surface. A battery package having a predetermined interval between them. 2. Between the wall surface near the top surface of all the module batteries in the second and lower stages from the uppermost stage and the opposing wall surface,
The battery package according to claim 1, wherein the guide plate is provided. 3. The battery package according to claim 1, wherein a single air inlet is provided on the entire wall surface. 4. The battery package according to claim 1, wherein an intake port is provided at a portion of the one wall surface corresponding to each module battery. 5. A blocking plate is provided horizontally between the one wall surface and a wall surface near the bottom surface of each module battery.
5. The battery package according to 2 or 4. 6. The battery package according to claim 1, wherein the battery is a sodium-sulfur battery.