KR101173467B1 - Solar cell module assembly - Google Patents

Abstract

The present invention relates to a battery module assembly in which a plurality of battery cells or unit modules are connected in series and built in a module case, and are arranged to be adjacent to each other in a lateral direction while being electrically connected to each other. In the module case, a plurality of seating cylinders in which a plurality of battery cells or unit modules are individually seated is formed to protrude downward, and the module case in which the seating tubes protrude is closed to close an upper opening of a box-type liquid refrigerant distribution tank. Is provided with a flange portion of the size, the inlet and outlet for the inlet and outlet of the liquid refrigerant is formed on the side of the refrigerant distribution tank, the plurality of liquid refrigerant introduced into the inside of the refrigerant distribution tank through the inlet Flows in a zigzag form inside the refrigerant distribution tank through It is configured to cool a plurality of battery cells or unit modules arranged in the plurality of seating cylinders, while passing between the seating cylinder and the inner surface of the coolant distribution tank, while the refrigerant flows in a zigzag flow exchanges the outlet It is discharged through, and the two-layer structure through the partition partition along the longitudinal direction, to minimize the fluidity degradation passing through the surrounding of the seating barrels to maximize the cooling efficiency.

Description

Battery module assembly with cooling function {Solar cell module assembly}

The present invention relates to a battery module assembly with improved cooling efficiency, and more particularly, a plurality of battery modules having a structure in which a plurality of battery cells or unit modules are connected in series and built in a module case are electrically connected to each other. And a cooling member which is arranged to be adjacent to each other in a lateral direction and includes a cooling conduit for the flow of the liquid refrigerant, and is mounted on an outer surface of the battery module.

BACKGROUND ART [0002] In recent years, rechargeable secondary batteries have been widely used as energy sources for wireless mobile devices.

In addition, the secondary battery is an electric vehicle (EV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle that has been proposed as a solution for air pollution of existing gasoline and diesel vehicles using fossil fuel. It is attracting attention as a power source such as (Plug-In HEV).

In a small mobile device, one or two or more battery cells are used per device, while a middle- or large-sized battery module such as an automobile is used as a middle- or large-sized battery module in which a plurality of battery cells are electrically connected due to the necessity of a large-

Since the medium-large battery module is preferably manufactured in a small size and weight, the rectangular battery, the pouch-type battery, etc., which can be charged with high integration and have a small weight to capacity, are mainly used as battery cells of the medium-large battery module. In particular, a pouch-shaped battery using an aluminum laminate sheet or the like as an exterior member has recently attracted a lot of attention due to its advantages such as small weight, low manufacturing cost, and easy shape deformation.

In order for the medium-large battery module to provide the output and capacity required by a given device or device, it is necessary to electrically connect a plurality of battery cells in series and maintain a stable structure against external force.

In addition, since the battery cells constituting the medium-large battery module is composed of a secondary battery capable of charging and discharging, such a high output large capacity secondary battery generates a large amount of heat during the charging and discharging process. If this is not effectively removed, thermal buildup occurs and consequently accelerates the deterioration of the unit cell, and in some cases there is a risk of fire or explosion. Therefore, a vehicle battery pack that is a high output large capacity battery requires a cooling system for cooling the battery cells embedded therein.

In general, the hybrid electric vehicle uses the power of the battery pack when starting, and because it uses oil such as gasoline while driving, the heat generation is relatively large, the vehicle battery applied to the hybrid electric vehicle The air pack is mainly used for the pack.

However, since the plug-in hybrid electric vehicle uses the power of the battery pack for the vehicle not only for starting but also during initial driving, the size of the battery pack is increased and the number of charge / discharge cycles is relatively increased, resulting in a large amount of heat generation.

Therefore, there is a high need for a technology that can fundamentally solve these problems and improve the cooling efficiency of the battery module assembly included in the vehicle battery pack.

The inventors of the present application surprisingly, when the cooling member including a refrigerant conduit for the flow of the liquid refrigerant to the outer surface of the battery module constituting the battery module assembly, surprisingly, the cooling efficiency of the battery module is greatly improved, which is a battery module assembly It was confirmed that the lifespan and reliability of the battery can be greatly improved, and the present invention has been completed.

In addition, it is possible to vary the arrangement of the refrigerant inlet and the refrigerant outlet by varying the structure or number of refrigerant conduits, it is possible to flexibly design the cooling system of the battery module assembly.

SUMMARY OF THE INVENTION An object of the present invention includes a configuration in which a refrigerant flow path for flowing liquid refrigerant in a zigzag manner is flown between a module case and a refrigerant distribution tank in a battery module assembly, thereby using a conventional air-cooled cooling system. Compared to the module assembly, the cooling efficiency can be increased significantly.

In the battery module assembly according to the present invention for achieving the above object, a plurality of battery cells or unit modules are connected in series and built in the module case, a plurality of battery modules in a state in which the electrical interconnection, In the battery module assembly arranged to be adjacent to each other,

The module case is formed by projecting a plurality of seating cylinders in which a plurality of battery cells or unit modules are individually seated downward,

The seat casing protruding module case is provided with a flange portion sized to block the upper opening of the box-shaped liquid refrigerant distribution tank,

In the side of the refrigerant distribution tank, the inlet and outlet for the inlet and outlet of the liquid refrigerant is formed,

A plurality of battery cells arranged in the plurality of seating cylinders, while the liquid refrigerant flowing into the inside of the refrigerant distribution tank through the inlet flows in a zigzag form inside the refrigerant distribution tank via the plurality of seating cylinders or Characterized in that configured to cool the unit module.

In addition, the refrigerant distribution tank is divided into a plurality of upper and lower spaces, and the divided spaces are preferably configured to perform the refrigerant flow between the layers formed through the flow port formed through the one corner portion.

In addition, it is preferable that the partition partition having a plurality of insertion openings into which the seating cylinder is inserted is configured to be arranged horizontally in the center of the coolant distribution tank.

In addition, the bottom corner of the refrigerant flow tank is preferably configured to be provided with a spacer for arranging the partition partition spaced apart by a predetermined distance.

The present invention, while passing between the seating cylinder and the inner surface of the refrigerant distribution tank, the refrigerant flows in a zig-zag, heat exchanges and is discharged through the outlet, and passes along the length of the seating barrels along the longitudinal direction in a two-layer structure via a partition partition. This has a useful effect of maximizing cooling efficiency by minimizing fluidity deterioration.

1 is a perspective structural view showing the appearance of a battery module assembly according to the present invention.
Figure 2 is an exploded perspective view illustrating the exploded components of the battery module assembly of Figure 1;
3 is an exploded perspective view illustrating the disassembled components of the battery module assembly as viewed from the opposite direction from FIG. 2.
4 is a planar structure diagram for explaining a refrigerant flow state of the battery module assembly according to an embodiment of the present invention.
5 is a planar structure diagram for explaining the refrigerant flow state when the battery module of the present invention in the form of a hexahedron.

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

Prior to this, terms and words used in the present specification and claims should not be construed in a limited sense, and the inventor shall appropriately define the concept of the term in order to best explain its own invention The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Here, the battery module assembly is a device for converting light energy of solar light into electrical energy, using a P-type semiconductor and an N-type semiconductor, and when light shines, electric charges move inside and a potential difference is generated between the P and N poles. It is using the principle. Solar cells can be roughly divided into those using a silicon semiconductor as a material and a compound semiconductor as a material. The silicon semiconductor may be classified into a crystalline system and an amorphous system, which will be collectively referred to as a "battery module assembly".

First, what corresponds to a battery module will be described.

As illustrated in FIGS. 2 and 3, the battery module assembly 100 according to the present invention includes a battery having a structure in which a plurality of battery cells or unit modules (not shown) are connected in series and built in the module case 110. Multiple modules have been conceived as part of the battery module assembly 100 arranged to be laterally adjacent to each other in an electrically interconnected state.

Here, in the module case 110, a plurality of seating cylinders 111 having seating holes 111a therein are formed to protrude downward so that a plurality of battery cells or unit modules are individually seated.

In addition, the module case 110 in which the seating tube 111 protrudes is configured to include a flange portion 110a having a size of closing the upper opening of the liquid refrigerant distribution tank 130 in the form of a box.

In addition, an inlet 131 and an outlet 133 are formed at a side surface of the coolant distribution tank 130 for inlet and outlet of the liquid refrigerant.

In addition, the liquid refrigerant flowing into the refrigerant distribution tank 130 through the inlet 131 flows in a zigzag form inside the refrigerant distribution tank 130 via the plurality of seating cylinders 111. It is configured to cool a plurality of battery cells or unit modules arranged in the plurality of seating cylinders 111.

In addition, a partition partition 120 having a plurality of insertion openings 121 into which the refrigerant distribution tank 130 is divided into a plurality of upper and lower spaces and into which the seating cylinder 111 is inserted is the center of the refrigerant distribution tank 130. It is adopting a structure that is arranged horizontally.

The bottom corner portion of the coolant distribution tank 130 is provided with a spacer for arranging the partition partitions 120 at a predetermined distance apart.

On the other hand, reference numeral 115 is a guide member for guiding the zigzag flow of the refrigerant, reference numeral 125 is a flow port for the interlaminar refrigerant flow. Counter flow has been generated, which has been devised as part of the component to allow a more uniform cooling action to be performed.

As a result, the refrigerant flows through the zigzag while passing between the seating tube 111 and the inner surface of the refrigerant distribution tank 130 and is discharged through the outlet.

In addition, along the longitudinal direction in the two-layer structure via the partition partition 120, it is to exhibit the feature that can maximize the cooling efficiency by minimizing the fluidity degradation passing through the seating barrels 111 around. .

As described above, the partition partition 120 is made of a plate material having sufficient strength, and the seating barrel in which a coolant such as cold water is arranged through the partition partition 120 at an upper portion thereof. By partitioning along the outer circumferential surface of the 111 to provide a manner in which the heat exchange is provided, thereby solving the difficulty of the cooling method, the long-term cooling period problem of the existing method, and also the dovetail male and female 140 A sealing technique in which the flange 110a of the structure and the sidewalls of the refrigerant flow tank 130 are engaged with each other may be applied, and thus, the partition partition 120 is designed with eco-friendly cooling to prevent the generation and leakage of environmentally harmful substances. It provides a very good effect, such as providing two types of interlaminar flow cooling at the same time.

In addition, the seating cylinder 111 may be manufactured in a hexahedral shape, it is possible to improve the heat transfer efficiency by providing a structure having a groove having an uneven shape along the outer peripheral surface of the seating cylinder 111.

The cooling structure of the present invention provides a wet cooling method, but since the battery module and the refrigerant do not directly contact, during the maintenance, the case 110 can be installed without tearing and can be used immediately after installation, and can be environmentally harmful. If this does not occur and the insulation is installed on the outside of the tank 130, by blocking the heat loss to the outside due to the insulation effect can produce a large energy saving effect and has the advantage of being able to configure a very simple cooling equipment will be.

Thus, while passing between the seating cylinder 111 and the inner surface of the refrigerant distribution tank 130, the refrigerant flows in a zig-zag, exchanges heat and is discharged through the outlet, and the two-layer structure through the partition partition 120. Along the furnace longitudinal direction, it is to exhibit the advantage that can be maximized cooling efficiency by minimizing the fluidity degradation passing through the seating cylinders 111.

Claims (4)

In a battery module assembly in which a plurality of battery cells or unit modules are connected in series and built in a module case, the plurality of battery modules are arranged to be adjacent to each other in a lateral direction while being electrically connected to each other.
The module case is formed by projecting a plurality of seating cylinders in which a plurality of battery cells or unit modules are individually seated downward,
The seat casing protruding module case is provided with a flange portion sized to block the upper opening of the box-shaped liquid refrigerant distribution tank,
In the side of the refrigerant distribution tank, the inlet and outlet for the inlet and outlet of the liquid refrigerant is formed,
A plurality of battery cells arranged in the plurality of seating cylinders, while the liquid refrigerant flowing into the inside of the refrigerant distribution tank through the inlet flows in a zigzag form inside the refrigerant distribution tank via the plurality of seating cylinders or Battery module assembly, characterized in that configured to cool the unit module.
The method of claim 1,
The refrigerant distribution tank is divided into a plurality of upper and lower spaces, and the divided spaces are formed through a flow hole formed through a corner portion of the battery module, characterized in that configured to perform the refrigerant flow between the layers formed by the space assembly.
The method according to claim 1 or 2,
And a compartment partition having a plurality of insertion holes into which the seating tube is inserted, which is arranged horizontally in the center of the refrigerant distribution tank.
The method of claim 3, wherein
The bottom surface corner portion of the refrigerant distribution tank is a battery module assembly, characterized in that provided with a spacer for arranging the partition partition at a predetermined distance apart.

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