JP6090197B2 - Battery pack storage case - Google Patents

Description

  The present invention relates to a battery pack storage case.

  2. Description of the Related Art Conventionally, for example, as disclosed in the following patent document, a battery pack that houses a battery body is known. In the battery pack according to Japanese Patent Application Laid-Open No. 2009-212081, a metal mesh member that covers at least the vent hole is provided on the side surface of the housing in order to prevent fire from being ejected from the battery pack when the battery burns. In addition, the battery pack according to Japanese Patent Laid-Open No. 2000-58016 includes a heat conductive sheet in order to eliminate a temperature difference between the batteries of the battery module in the battery pack.

JP 2009-212081 A JP 2000-58016 A

  As described above, the conventional battery pack is provided with a protective function including flame retardancy. However, since it is assumed that the battery pack is used by being set in an electric device, it is not usually structured to place importance on storage, and the container for storing the battery is typically made of resin. It is. If the battery pack is not set in an electrical device, the battery may burn, be stepped on, bitten by a pet, or accidentally dropped and deformed due to a nail penetration, internal short circuit, or other factors. Since it is assumed that there will be occasions when you are in trouble, you want to store the battery pack safely even in such situations.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a battery pack storage case capable of safely storing a battery pack.

Metal battery pack storage case according to the present invention, a battery pack having a container covering the battery and the battery, a battery pack housing case for removably accommodating, with an openable lid concave portion and the recess A gas case for evacuating the gas from the inside of the recess to the outer surface by reaching the recess from the outer surface. A vent hole is provided, and the diameter of the vent hole is less than the extinguishing distance of the flame generated by the ignition of the battery pack .

  According to the present invention, since the battery pack can be stored in the battery pack storage case having both heat resistance, flame retardancy, and strength, the battery pack can be stored safely.

It is a perspective view which shows the battery pack storage case concerning embodiment of this invention. It is a perspective view which shows the battery pack which a battery pack storage case accommodates. It is a perspective view which shows the battery pack which a battery pack storage case accommodates. It is a perspective view which shows the battery pack which a battery pack storage case accommodates. It is a perspective view which shows the battery pack storage case concerning embodiment of this invention. It is sectional drawing which shows the battery pack storage case concerning embodiment of this invention. It is sectional drawing which shows the battery pack storage case concerning the modification of embodiment. It is a perspective view which shows the battery pack storage case concerning the modification of embodiment. It is a perspective view which shows the battery pack storage case concerning the modification of embodiment. It is a perspective view which shows the battery pack storage case concerning the modification of embodiment. It is a perspective view which shows the battery pack storage case concerning the modification of embodiment.

  FIG. 1 is a perspective view showing a battery pack storage case 10 according to an embodiment of the present invention. 2 to 4 are perspective views showing a small battery pack 102, a medium battery pack 104, and a large battery pack 106, in which a battery main body (typically a lithium ion secondary battery) and The protection means is provided, and these are protected by being stored in the battery pack storage case 10. The battery packs 102, 104, and 106 include terminals 103, 105, and 107, respectively, and these terminals include a positive electrode terminal, a negative electrode terminal, and a thermistor terminal, respectively. The battery packs 102, 104, and 106 are battery bodies such as single batteries or multiple batteries housed in a resin container together with their protection means, for example, lithium ion secondary batteries for mobile phones or digital cameras, and cleaners. Generally, lithium ion secondary batteries distributed in the general market, such as lithium ion secondary batteries, take the form of battery packs. As the protection means, for example, a short-circuit detection circuit, a temperature detection circuit including a thermistor, or a protection circuit during overheating may be housed together with the battery body.

  The battery pack storage case 10 is configured by a metal lid 12 that can be opened and closed by a hinge 11 in a housing 14 that is formed of a strong metal plate and has a recess. The thickness of the metal plate is preferably 0.25 mm or more, which can ensure strength and prevent the battery packs 102, 104, 106 from being punctured. The buffer material 20 is accommodated on the bottom and side surfaces of the recess of the battery pack storage case 10 and the back side of the lid 12. The buffer material 20 has a heat insulating property, and in addition, is preferably composed of a material that is electrically insulating and flame retardant. More specifically, the cushioning material 20 is more preferably composed of flexible foamable silicon or flame retardant sponge. Battery packs 102, 104, and 106 are housed in the center. The buffer material 20 protects the battery packs 102, 104, and 106 from impacts, prevents the battery packs 102, 104, and 106 from rattling in the battery pack storage case 10, and prevents the battery from being attached to the metal lid 12 and the housing 14. It is possible to prevent the packs 102, 104, and 106 from coming into contact with each other. It is preferable to make the buffer material 20 heat insulating to prevent heat transfer and to delay the outside air temperature from being transmitted to the battery packs 102, 104, 106. It is preferable to make the buffer material 20 electrically insulating to prevent a short circuit between the terminals 103, 105, and 107 of the battery packs 102, 104, and 106.

  For example, if the size of the battery pack storage case 10 is for a digital camera, it is preferable to design the size so that the largest battery pack can be accommodated for the digital camera. For digital cameras, all battery packs for digital cameras can be protected by one type of battery pack storage case 10. The size of the battery pack storage case 10 is preferably designed to be grouped according to applications, such as for digital cameras, notebook PCs, and mobile phones. In the case of a notebook PC, it is longer than that of a digital camera, so that it is easier to use a battery pack storage case 10 prepared separately. The same manufacturer uses several types of battery packs with different sizes and external shapes depending on the model number of the digital camera or the old and new products. Even in the case of other manufacturers, the size of the digital camera itself does not change so much, so the battery pack used in the digital camera is the same size. However, the shape or size is slightly different. In the case of a notebook PC, the size is particularly large in the length direction as compared with a battery pack for a digital camera. Rather than using the same battery pack storage case 10 as that of the digital camera, it is more convenient to make a battery pack storage case 10 specialized for battery packs for notebook PCs. In the case of a notebook PC, the battery pack is designed according to the size of the notebook PC. However, the notebook PCs of each company are approximately the same size, and the battery packs are also different in shape but are approximately the same size. . If the battery pack storage case 10 is made in accordance with the largest battery pack based on the same concept as the battery pack storage case 10 for a digital camera, it can be applied to all other battery packs for notebook PCs. The same applies to the battery pack for mobile phones. The same applies to battery packs for robot cleaners, battery packs for handy cleaners, and the like.

  FIG. 5 is a perspective view showing the battery pack storage case 10 and shows a state in which the lid of the battery pack storage case 10 is closed. The lid 12 can be closed by fitting the hook 17 and the hook receiver 16. A gas vent hole 18 which is a through hole for communicating the inside and outside of the housing 14 is provided on the surface of the housing 14 on the hook receiver 16 side. Even if the battery packs 102, 104, 106 cause gas leakage or combustion, the internal pressure of the battery pack storage case 10 rises and the gas escapes from the gas vent hole 18. For this reason, it can suppress that the battery pack storage case 10 is broken and the cover 12 is opened with force, and safety is improved. The gas vent hole 18 preferably has a diameter and width equal to or less than the flame extinguishing distance. Specifically, the gas vent hole 18 is preferably a round hole having a diameter of 3 mm or less or a slit having a short diameter of 1 mm or less. Even if the battery packs 102, 104, 106 are ignited, no flame leaks out of the battery pack storage case 10, and safety is improved. This is because the flame does not go out because the diameter and width are equal to or less than the flame extinction distance. Further, even when a flame is generated outside the battery pack storage case 10 and the battery pack storage case 10 is blown by the flame, the flame does not enter inside, and the battery packs 102, 104, 106 can be prevented from burning. In addition, since the battery pack storage case 10 is provided with a metal lid 12 and a housing 14, even if the battery packs 102, 104, 106 are ignited, there is no flame leaking out of the battery pack storage case 10. It is safe even if a flame is generated outside the battery pack storage case 10 and the battery pack storage case 10 is blown by the flame, and the internal battery packs 102, 104, 106 can be protected even if a pet bites.

  FIG. 6 is a cross-sectional view showing the battery pack storage case 10. Because of the cushioning property of the cushioning material 20, both the battery pack 102 and the battery pack 106 can be stored in the same battery pack storage case 10, and can be held stably without being displaced. By processing the buffer material 20 into the wave-like portion 22, it becomes more difficult to shift and the effect can be further improved. The shock-absorbing material 20 can prevent an impact such as dropping or trampling from being transmitted to the battery packs 102, 104, 106, and protect the battery packs 102, 104, 106. Since the cushioning material 20 is heat insulating, the temperature of the outside air in the battery pack storage case 10 is prevented from being immediately transmitted to the battery packs 102, 104, and 106. The storage temperature of the battery packs 102, 104, and 106 is usually about −20 ° C. to 50 ° C., and the battery packs 102, 104, and 106 deteriorate when they are out of this temperature range. By using the battery pack storage case 10, for example, even if it is accidentally left in the car in summer, it can be prevented from exceeding the allowable temperature range in a short time. The battery packs 102, 104, and 106 can be prevented from deteriorating by moving to the place. Since the buffer material 20 is non-conductive, it is possible to prevent an external short circuit between the electrodes of the battery packs 102, 104, and 106. Although not shown, the cushioning material 20 may be columnar or spindle-shaped.

  FIG. 7 is a cross-sectional view showing a modified example of the battery pack storage case 10. The buffer material 120 may be thin at the center to form a large wavy portion 122 and may be a small wavy portion 124 at the end, or the height may be continuously reduced toward the end. Further, the buffer material 120 may be sparse at the center and denser toward the end. These configurations may be implemented independently or may be combined. The battery packs 102, 104, and 106 of various sizes can be held at the center at all times and can be held stably. Although not shown, when the cushioning material 20 is columnar or weight-shaped, it may be lower at the center and higher toward the end.

  FIG. 8 is a perspective view showing a modified example of the battery pack storage case 10. The lid 12 may be provided with an irreversible temperature indicating material seal 50 in which the temperature history is known. For example, if the irreversible temperature indicating material seal 50 is discolored when the temperature exceeds 50 ° C., the battery packs 102, 104, and 106 inside can be known to have a possibility of deterioration exceeding the 50 ° C. environment. Whether or not the packs 102, 104, and 106 can be used can be determined. This is because it is found that the battery packs 102, 104 and 106 have encountered a high temperature environment, and the user can be informed and alerted that the battery has deteriorated. It is preferable that the irreversible temperature indicating material seal 50 can be replaced. This is because the battery packs 102, 104, and 106 that have been encountered in a high temperature environment can be used repeatedly and are economical.

  FIG. 9 is a perspective view showing a modified example of the battery pack storage case 10. You may provide the coating part 60 which applied the coating material which mixed the repellent component to a part of lid | cover 12, and can prevent biting of pets, such as a dog, by this. The coating unit 60 is provided not only on the entire battery pack storage case 10 but on only a part of the lid 12 or a part of the housing 14, and can reduce costs while preventing biting of a pet such as a dog.

  FIG. 10 is a perspective view showing a modified example of the battery pack storage case 10. You may use the coating material which mixed the repellent component for the printing ink part 70 to a main body. While preventing biting of pets such as dogs, normal paint used in other products can be used at the time of manufacture, so that the operation is not complicated and the manufacturing cost can be suppressed. It can be used as a final product in the manufacturing process, and products with and without repellent components can be easily sorted and made. In families without pets, repellent ingredients are unnecessary and can be purchased at a lower price. The purchaser can select the product according to the application.

  FIG. 11 is a perspective view showing a modified example of the battery pack storage case 110 according to the modified example. You may provide the battery pack storage case 110 comprised with the lid | cover 112 and the housing | casing 114 which each attached the aperture | diaphragm | squeeze part 116. FIG. The throttle part 116 is a part provided so that a part of the side surface is recessed toward the center in a plan view. By attaching the throttle part 116, the strength of the battery pack storage case 110 as a box can be increased. Safety and usability can be improved. Although not shown, a handle portion may be provided on the lid 112 or the housing 114. By making it easy to hold, it can be prevented from slipping and falling from the hand, and an extra shock is prevented from being applied to the battery, improving safety. It is even better if the handle is embossed or non-slip uneven. You may provide this handle part in the battery pack storage case 10 concerning FIGS.

  The configurations according to FIGS. 1 to 11 described above may be used alone as described above, or may be used in combination of one or more.

10 Battery Pack Storage Case, 11 Hinge, 12 Lid, 14 Housing, 16 Hook Receiving, 17 Hook, 18 Degassing Hole, 20 Cushioning Material, 22 Corrugated Part, 50 Irreversible Thermal Insulating Material Seal, 60 Painted Part, 70 Part, 102, 104, 106 Battery pack, 103, 105, 107 terminals

Claims (10)

A battery pack storage case for removably storing a battery and a battery pack having a container covering the battery,
And a metallic housing having a lid capable of opening and closing the concave portion and the concave portion,
A heat insulating cushioning material provided in the recess;
Equipped with a,
The housing comprises a gas vent through hole for reaching the recess from the outer surface and venting gas from the recess to the outer surface;
A battery pack storage case in which the diameter of the gas vent hole is less than the extinguishing distance of a flame generated by the ignition of the battery pack. The battery pack storage case according to claim 1, wherein the cushioning material has a corrugated portion on a surface thereof. A battery pack storage case for removably storing a battery and a battery pack having a container covering the battery,
A metal housing comprising a recess and a lid capable of opening and closing the recess;
A heat insulating cushioning material provided in the recess;
With
The buffer material has a corrugated portion on the surface, and the height of the corrugated portion increases toward the center of the concave portion. A battery pack storage case for removably storing a battery and a battery pack having a container covering the battery,
A metal housing comprising a recess and a lid capable of opening and closing the recess;
A heat insulating cushioning material provided in the recess;
With
The cushioning material, the concave portion of the central higher density the recess of the outer as dense been batteries pack storage case lower. The battery pack storage case according to any one of claims 1 to 4 , wherein the buffer material has electrical insulation and flame retardancy. The battery pack storage case according to any one of claims 1 to 5 , wherein the cushioning material has flexibility. The battery pack storage case according to any one of claims 1 to 6 , further comprising a temperature indicating material seal that is provided on an outer surface of the housing and whose appearance changes according to an ambient temperature. The battery pack storage case according to claim 7 , wherein an appearance change of the temperature indicating material seal is irreversible with respect to a temperature change. The battery pack storage case according to any one of claims 1 to 8 , wherein a part of a side surface of the housing is recessed toward the center in a plan view, or a handle is provided on the housing. The battery pack storage case according to any one of claims 1 to 9 , wherein an outer surface of the housing has a portion coated with a paint containing a repellent component.

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