KR102505151B1 - Tray for packing secondary battery - Google Patents

Abstract

The present invention is a tray formed by molding a thin plate material and accommodating secondary batteries and using a plurality of stacked trays, comprising: a battery accommodating portion formed concavely to accommodate secondary batteries; A service space formed, a load distribution undercut concavely formed on at least a part of the sidewall of the battery accommodating part and inclined so that the main body accommodating part has an upper and lower beam, and a load distributing undercut formed concavely on at least a part of the sidewall of the service space, the service space It may include a laminated undercut formed to be inclined to form an upper and lower beam.

Description

Tray for secondary battery packaging {TRAY FOR PACKING SECONDARY BATTERY}

The present invention relates to a tray for packaging secondary batteries, and relates to a tray capable of accommodating and stacking secondary batteries.

A secondary battery is a battery that can be charged and discharged unlike a primary battery that cannot be recharged. In the case of a low-capacity battery in which one battery cell is packaged in a pack form, a secondary battery is used in smartphones, digital cameras, laptops, tablets, and smartphones. Used in small portable electronic devices, large-capacity batteries with dozens of connected battery cells are widely used as power sources for driving motors such as electric scooters, hybrid vehicles, and electric vehicles.

Secondary batteries are manufactured in various shapes, for example, in the case of a prismatic or pouch type, a tray is commonly used as a packaging member for transport and storage. The tray is usually used by molding a thin synthetic resin plate to form one or more grooves for accommodating secondary batteries, accommodating secondary batteries in one groove or each groove, and then stacking the trays thereon. The stacked trays are again housed in separate boxes or boxes.

Since the trays stacked and used in this way also serve to protect the secondary battery, the secondary battery may be damaged if there is a problem in the stacked structure. For example, if the tray does not withstand the weight of the secondary battery or an impact from the outside, serious problems may occur because the secondary batteries collide with each other or are electrically shorted. Even if it does not reach that level, if the overall stacked height is lowered, such as crushing of the stacked trays in the box, the trays are separated from each other and flow in the box, so the possibility of damage to the secondary battery due to collision with each other increases.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a secondary battery packaging tray that can have sufficient structural strength in a stacked state.

Another object of the present invention is to provide a secondary battery packaging tray capable of minimizing separation and flow of trays within a box or a box by suppressing separation of stacked trays by external force.

Other objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings.

A secondary battery packaging tray according to the present invention is formed by molding a thin plate material, accommodates secondary batteries, and is used by stacking a plurality of trays, comprising: a battery accommodating portion concavely formed to accommodate secondary batteries; A service space extending in the lateral direction and formed concavely, a load distributing undercut formed concavely on at least part of the sidewall of the battery accommodating part and inclined so that the main body accommodating part has an upper and lower beam, and a concave part in at least part of the sidewall of the service space. It may include a laminated undercut that is formed to be formed but inclined so that the service space has an upper and lower beam.

Here, the load distributing undercut may have a substantially horizontal bottom surface, and the bottom surface of the bottom surface may be configured such that an upper surface of another battery packaging tray disposed adjacent to the lower side is in contact with and supported.

In the tray for packaging secondary batteries according to the present invention, an outer surface of the laminated undercut may come into contact with an inner surface of a laminated undercut of another battery packaging tray disposed adjacent to the lower side. In addition, a plurality of stacked undercuts may be formed in a vertical direction, and a step may be formed between a pair of stacked undercuts adjacent to each other in a vertical direction. In this case, the plurality of stacked undercuts may have the same height as each other. Meanwhile, the lower surface of the step between the stacked undercuts may be configured to be supported by an upper surface of another battery packaging tray disposed adjacent to the lower side or a step between the stacked undercuts. In addition, an upper end of the laminated undercut may be rounded in cross section in a vertical direction.

According to the present invention, the secondary battery packaging tray can secure sufficient structural strength between the trays stacked in the vertical direction by the load distribution undercut. In addition, the stacked undercuts are arranged such that so-called reverse inclined surfaces face each other, so that the stacked trays are provided with resistance in the direction in which they are separated from each other, and thus it is possible to prevent the trays from separating and colliding with each other.

Furthermore, when a plurality of stacked undercuts are provided, the step between the stacked undercuts assists the role of the load distributing undercut, so that structural strength against vertical loads can be further reinforced.

1 is a perspective view of an embodiment of a tray for packaging a secondary battery according to the present invention.
FIG. 2 is an enlarged view of a portion A of a dotted line circle in FIG. 1 .
FIG. 3 is a partial cross-sectional view taken along line BB of FIG. 2 .
FIG. 4 is a partial cross-sectional view taken along line CC of FIG. 2 .
5 is a partial cross-sectional view corresponding to FIG. 3 of another embodiment of a secondary battery packaging tray according to the present invention.
6 is a partial cross-sectional view corresponding to FIG. 3 of another embodiment of a secondary battery packaging tray according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art, and the following examples may be modified in many different forms, and the scope of the present invention is as follows It is not limited to the examples. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the spirit of the invention to those skilled in the art.

In addition, in the following drawings, the thickness or size of each layer is exaggerated for convenience and clarity of explanation, and the same reference numerals refer to the same elements in the drawings. As used herein, the term "and/or" includes any one and all combinations of one or more of the listed items.

Terms used in this specification are used to describe specific embodiments and are not intended to limit the present invention. As used herein, the singular form may include the plural form unless the context clearly indicates otherwise. Also, when used herein, "comprise" and/or "comprising" specifies the presence of the recited shapes, numbers, steps, operations, elements, elements, and/or groups thereof. and does not exclude the presence or addition of one or more other shapes, numbers, operations, elements, elements and/or groups.

In this specification, terms such as first and second are used to describe various members, components, regions, layers and/or portions, but these members, components, regions, layers and/or portions are limited by these terms. It is self-evident that These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Thus, a first member, component, region, layer or section described in detail below may refer to a second member, component, region, layer or section without departing from the teachings of the present invention.

1 is a perspective view of an embodiment of a tray for packaging a secondary battery according to the present invention.

The secondary battery packaging trays 100 and 100' according to the present invention are made of, for example, plastic as a thin plate material, and the battery accommodating portion 110 for accommodating the secondary battery 50 is formed concavely. In FIG. 1, illustratively, a secondary battery packaging tray () has 10 battery accommodating portions 110 formed therein. The size and specific shape of the battery accommodating portion 110 depend on the shape of the secondary battery 50 to be packaged. The shape of the battery accommodating part 110 is made specifically for the prismatic or pouch type secondary battery 50 in the example of FIG. 1 , which may vary. The number of battery accommodating parts 110 can also be adjusted as needed. In addition, in FIG. 1 illustratively, one secondary battery 50 is shown in a state before being accommodated in the battery accommodating unit 110, and another secondary battery 50 is shown in a state accommodated in the battery accommodating unit 110. And, the remaining battery accommodating portion 110 is shown empty, but this is only for convenience of description, so that ten secondary batteries 50 can be accommodated in the ten battery accommodating portions 110, as well as am.

In this way, for example, another tray 100' may be stacked under one tray 100 accommodating 10 secondary batteries 50. Of course, another tray may be stacked on the upper surface of the illustrated secondary battery packaging tray 100 . Although FIG. 1 also exemplarily shows that two secondary battery packaging trays 100 and 100' are stacked, the number of stacked secondary battery packaging trays 100 and 100' can be increased or decreased as needed. self-explanatory

A service space 120 may be provided in the secondary battery packaging tray 100 in addition to the battery accommodating portion 110 . The service space 120 extends laterally from the battery accommodating part 110 and is formed concavely, and the secondary battery 50 is accommodated or separated from the battery accommodating part 110, or a packing guide is laid on the bottom. or can be provided for removal operations. In FIG. 1, the service space 120 is indicated by reference numeral 120 only in four places on the edge side, but the number or location can be changed as needed. Furthermore, concave spaces 120' connecting neighboring battery accommodating units 110 are shown between the battery accommodating units 110, and these spaces 120' can also be regarded as service spaces.

FIG. 2 is a partially enlarged view of the dotted line circle A of FIG. 1, showing one battery accommodating part 110 and the service space 120 together. A load distribution undercut 140 is concavely formed on the sidewall 111 of the battery accommodating portion 110, and a stacking undercut 130 is concavely formed on the sidewall 121 of the service space 120. In the stacked undercut 130 , an upper stacked undercut 131 and a lower stacked undercut 132 are disposed in a vertical direction.

The upper laminated undercut 131 and the lower laminated undercut 132 are formed inclined with respect to the sidewall 121 of the service space 120, as is clearer in the cross-sectional view of FIG. A step 133 is formed between the two laminated undercuts 131 and 132 to form a lower beam. In this state, when another tray 100' having the same structure is stacked from below, the inner surface 131a of the upper stacked undercut 131 of the lower tray 100' (that is, the surface facing the inside of the service space) It is fitted in contact with the outer surface 132b (ie, the surface facing the outside of the service space) of the lower laminated undercut 132 of the upper tray 100, and the outer surface of the lower laminated undercut 132 of the upper tray 100 Since the inner surfaces of the upper laminated undercut of the lower tray 100' are inclined in an upper-narrow shape, a resistance force is generated against separation of the two trays 100 and 100' in the vertical direction. In addition, if the upper surface 101 of the lower tray 100' is in contact with the lower surface of the step 133 between the laminated undercuts 131 and 132 of the upper tray 100 (in FIG. , In FIG. 6, components corresponding to these are in contact), and since it can support loads in the vertical direction like the bottom surface 141 of the load distribution undercut 140 to be described below, the secondary battery packaging tray according to the present invention can reinforce the structural strength of To this end, the upper stacked undercut 131 and the lower stacked undercut 132 may have substantially the same height.

Meanwhile, when the two trays 100 and 100' are stacked together, the upper surface 101 of the lower tray 100' easily passes toward the outer surface of the lower stacking undercut 132 of the upper tray 100. The upper end of the upper laminated undercut 131 of the lower tray 100' is preferably rounded (R) to appear round in cross-sectional view.

The load distribution undercut 140 may be formed on the sidewall 111 of the battery accommodating part 110 . In the cross-sectional view of FIG. 4 , a load distributing undercut 140 for two trays 100 and 100' stacked on top of each other is illustrated. Similar to the laminated undercut 130, the load distributing undercut 140 is also formed to be inclined with respect to the sidewall 111 of the battery accommodating part 110 so that the battery accommodating part 110 is formed at least partially in an upper and lower shape. In addition, the load distribution undercut 140 includes a bottom surface 141 formed substantially horizontally, and since the bottom surface of the bottom surface 141 comes into contact with the upper surface 101 of the lower tray 100', will support the load.

5 is a cross-sectional view of another embodiment of a secondary battery packaging tray according to the present invention, illustrating a cross-section taken at the same viewpoint as the example of FIG. 3 . In this example, there is a difference from the previous embodiment in that only one laminated undercut 130 is formed. Therefore, the configuration such as the step 133 of the previous embodiment is omitted, and the role of supporting the load in the vertical direction can also be omitted. there is. Nevertheless, the inclined inner surface of the laminated undercut of the lower tray 100' is in contact with the inclined outer surface of the laminated undercut 130 of the upper tray 100, but all are inclined in an upper and lower beam shape. After that, it is possible to generate resistance against separation of the two trays 100 and 100' in the vertical direction. The rounding of the upper end of the laminated undercut 130 is the same as in the previous embodiment.

FIG. 6 is a cross-sectional view of another embodiment of a secondary battery packaging tray according to the present invention, also illustrating a cross-section from the same viewpoint as the example of FIG. 3 . In this example, a difference from the previous embodiments is that three laminated undercuts 130 are formed. Since the three laminated undercuts 130 are formed in a row in the vertical direction, the steps 133 are also formed in two places. If the other stacked trays 100' have the same structure, as shown in the figure, the uppermost stacked undercut of the lower tray 100' is in contact with the middle stacked undercut of the upper tray 100 at the time when the stacking is completed, and thus the lower tray ( The middle layered undercut of 100') may contact the lowermost layered undercut of the upper tray 100 . Alternatively, although not shown, the uppermost stacked undercut of the lower tray 100' may be disposed in contact with the lowermost stacked undercut of the upper tray 100. If it is the same as the illustrated example, the upper surface of the lower tray 100' and the upper step of the two steps 133 may come into contact with the bottom of the two steps of the upper tray 100, respectively, as described in the previous embodiment. It can help support the vertical load.

Although several examples of the number, shape, and position of the stacked undercuts 130 have been described above, only one stacked undercut 130 is provided, and the height of the sidewall of the service space 120 is the same as that of the load distributing undercut 140. It may be configured to occupy only about half of the number, shape, position, etc. may be appropriately modified. However, in any case, the wall surface of the laminated undercut 130 is made of an inclined surface that partially makes the service space 120 upper and lower, so that when a plurality of trays are stacked in the vertical direction, the trays can resist in the direction of being separated from each other. You should be able to.

What has been described above is only the embodiments for carrying out the secondary battery packaging tray according to the present invention, and the present invention is not limited to the above-described embodiments, and the subject matter of the present invention as claimed in the following claims Anyone with ordinary knowledge in the field to which the present invention pertains without departing from the technical spirit of the present invention to the extent that various changes can be made.

50: secondary battery 100, 100': tray
110: battery accommodating portion 111: side wall
120, 120': service space 121: side wall
130, 131, 132: laminated undercut 133: step difference
140: load distribution undercut 141: bottom surface

Claims (7)

A tray made by molding a thin plate-like material, accommodating a secondary battery, and using a plurality of stacked trays,
A battery accommodating portion concavely formed to accommodate a secondary battery;
A service space extending laterally from the battery accommodating portion and formed concavely;
a load distributing undercut concavely formed on at least a part of the sidewall of the battery accommodating part and inclined so that the battery accommodating part has an upper and lower beam;
A laminated undercut concavely formed on at least a part of the sidewall of the service space and inclined so that the service space has an upper and lower beam;
The outer surface of the laminated undercut is in contact with the inner surface of the laminated undercut of another battery packaging tray disposed adjacent to the lower side.
According to claim 1,
The load distribution undercut has a substantially horizontal bottom surface,
A secondary battery packaging tray configured to contact and support an upper surface of another battery packaging tray disposed adjacently below the bottom surface of the bottom surface.
delete According to claim 1,
A tray for packaging secondary batteries, wherein a plurality of stacked undercuts are formed in a vertical direction, and a step is formed between a pair of stacked undercuts adjacent to each other in a vertical direction.
According to claim 4,
The plurality of laminated undercuts have the same height as the secondary battery packaging tray.
According to claim 4,
A secondary battery packaging tray configured to contact and support an upper surface of another battery packaging tray disposed adjacent to the lower side or a step between each of the stacked undercuts on a lower surface of the step between the stacked undercuts.
The tray for packaging secondary batteries according to claim 1, wherein an upper end of the stacked undercut is rounded in cross section in a vertical direction.

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