KR101400085B1 - Battery Module Having Insulating Connecting Member and Insulating Joint Member - Google Patents

Battery Module Having Insulating Connecting Member and Insulating Joint Member Download PDF

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Publication number
KR101400085B1
KR101400085B1 KR1020110136053A KR20110136053A KR101400085B1 KR 101400085 B1 KR101400085 B1 KR 101400085B1 KR 1020110136053 A KR1020110136053 A KR 1020110136053A KR 20110136053 A KR20110136053 A KR 20110136053A KR 101400085 B1 KR101400085 B1 KR 101400085B1
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KR
South Korea
Prior art keywords
battery module
coating layer
insulating coating
electrically insulating
battery
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KR1020110136053A
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Korean (ko)
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KR20130068721A (en
Inventor
이영호
정상윤
황세연
최준석
김태혁
박준규
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주식회사 엘지화학
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Priority to KR1020110136053A priority Critical patent/KR101400085B1/en
Publication of KR20130068721A publication Critical patent/KR20130068721A/en
Application granted granted Critical
Publication of KR101400085B1 publication Critical patent/KR101400085B1/en

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Abstract

The present invention relates to a battery module assembly in which two or more battery modules are electrically connected to each other, wherein electrode terminals of the battery modules are electrically connected to each other, and through holes are formed at positions corresponding to the separation distances of the electrode terminals A conductive connecting member having an electrically insulating coating layer formed on an outer surface exposed to the outside in a state of being mounted on the battery module by the following fastening member; And a fastening member fastened to the through holes of the connecting member and having an electrically insulating coating layer formed on an outer surface exposed to the outside in a state of being fastened to the connecting member.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a battery module having an insulating connecting member and an insulating connecting member,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery module assembly having improved reliability and a middle- or large-sized battery pack including the same. More particularly, the present invention relates to a battery module assembly in which battery modules are electrically connected, A conductive connecting member in which through holes are drilled at positions corresponding to the distance between the electrode terminals, and an electrically insulating insulating coating layer is formed on an outer surface exposed to the outside in a state of being mounted on the battery module by the fastening member; And a fastening member fastened to the through-holes of the connecting member and having an electrically insulating coating layer formed on an outer surface exposed to the outside in a state of being fastened to the connecting member.

BACKGROUND ART [0002] In recent years, rechargeable secondary batteries have been widely used as energy sources for wireless mobile devices. The secondary battery is also attracting attention as a power source for an electric vehicle (EV) and a hybrid electric vehicle (HEV), which are proposed as solutions for the air pollution of existing gasoline vehicles and diesel vehicles using fossil fuels .

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-

Generally, a battery module is built in a cartridge connecting a plurality of unit cells in series and / or in parallel, and a plurality of such cartridges are electrically connected. In some cases, the battery pack may be manufactured as a middle- or large-sized battery pack or system in which two or more battery modules are electrically connected to provide a higher output.

Therefore, it is necessary to connect the electrode terminals to the batteries (including the unit cells), the battery cartridges, and the battery modules in order to electrically connect them to each other and to connect them to external devices to receive power from them.

However, since the connecting portion of the electrode terminal is a portion where the risk of short-circuiting is high in an external impact and a portion in which a high voltage flows, it is necessary to pay attention during operation or during use.

For example, when a middle- or large-sized battery pack is mounted on an electric vehicle or a hybrid battery automobile, the pack case is made of a metal material so as to give a desired mechanical rigidity. Therefore, when an external shock is applied to the middle- or large-sized battery pack in the course of a vehicle collision or the like, the pack case may be deformed to come into contact with the electrode terminal connection portion of the battery module and cause a short circuit.

In order to solve such a problem, some prior arts have proposed a method of arranging the electrode terminal connection portions of the battery module in the left and right direction, not the front and rear direction of the vehicle with a high possibility of collision, To provide additional space for impact mitigation. However, the above-described techniques have a problem in that the efficiency of the arrangement space of the battery module in the device is greatly reduced.

In this connection, some prior arts disclose a battery module having a structure in which an insulating external member is used to seal the electrode terminal connecting portion.

Referring to FIG. 1, the battery module assembly 100 includes a conductive connecting member 110 for electrically connecting electrode terminals (not shown), a conductive connecting member 110 for connecting the conductive connecting member 110 and the electrode terminal, And a protective cover 130 for opening and closing the open upper end of the insulating sheath member 120. The insulating cover member 120 covers the conductive connecting member 110 and covers the open end of the insulating cover member 120. [

However, when the insulating sheath member and the protective cover are included, a manufacturing cost and an increase in size thereof can not be avoided, and a process of covering the entire surface of the electrode terminal connecting portion with the protective cover is added, There is a problem.

Accordingly, there is a high need for an insulation structure capable of solving these problems fundamentally and simplifying the structure of the battery module, thereby making it possible to form a battery module having various structures.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-described problems of the prior art and the technical problems required from the past.

That is, an object of the present invention is to provide a battery module assembly capable of achieving connection of an electrode terminal of a battery module and securing insulation of an electrode terminal connection portion with a compact structure.

According to an aspect of the present invention, there is provided a battery module assembly including two or more battery modules electrically connected to each other,

Wherein the battery module is electrically connected to the electrode terminals of the battery modules and the through holes are drilled at positions corresponding to the distance between the electrode terminals, A conductive connecting member having an insulating coating layer formed thereon; And

A fastening member fastened to the through-holes of the connection member and having an electrically insulating coating layer formed on an outer surface exposed to the outside in a state of being fastened to the connection member;

As shown in FIG.

Therefore, by including the insulating coating layer on the conductive connecting member and the fastening member as described above, the battery module assembly according to the present invention can secure insulation at the same time as the conductive connecting member is coupled to the electrode terminal of the battery module, By omitting the cover member, it is possible to remarkably suppress the increase in the manufacturing processability and the increase in the size of the battery module and the increase in the manufacturing cost.

In one preferred embodiment, the battery module assembly may have a structure in which two or more battery modules having a positive terminal and a negative terminal protruded from the same side are in close contact with each other. That is, by forming the positive electrode terminal and the negative electrode terminal on the same surface, it is possible to reduce the space due to the protrusion of the electrode terminals and to simplify the structure for electrical connection, compared with the case where the positive electrode terminal and the negative electrode terminal are formed on different surfaces , The battery module assembly can be made more compact.

In this case, the electrode terminals of the battery modules are arranged on the same line, and the electrode terminals of the battery modules are electrically connected to the conductive connecting member and the connecting member.

The fastening member is not particularly limited as long as the fastening member is easily fastened to the conductive connecting member so as to establish an electrical connection, and may be preferably a bolt.

Specifically, the bolt includes: a body portion having a circular shape in plan view, a body portion having a bolting groove at the center of the upper end thereof, and having an electrically insulating coating layer formed on the outer surface thereof except for the bolting groove; And a fastening extension extending downward from the main body and having a screw thread formed on an outer surface thereof; . ≪ / RTI >

In the above structure, a groove may be formed at the lower end of the outer surface of the body portion, and an electrically insulating coating layer may be formed in the groove so as to enhance the bonding strength between the body portion and the electrically insulating coating layer.

With this structure, it is possible to prevent the electric current flowing through the conductive connecting member from being intercepted from the outside, and to prevent foreign matter from entering the connecting member and the penetration of moisture, and the like.

On the other hand, the conductive connecting member is preferably made of a conductive plate material.

In addition, the upper surface of the conductive plate preferably has an electrically insulating coating layer formed thereon except for a portion to which the coupling member is coupled, so that the electrical connection portion can be sealed by each of the electrically insulating coating layers when the coupling member is mounted Very desirable. In addition, since the electric insulation can be improved by the compact structure as described above, it can be used in battery modules having various structures.

Meanwhile, the electrically insulating coating layer may be formed by, for example, a double injection method. Here, the double injection method is a method of performing double injection using two different injection apparatuses using two kinds of different resins, in which a secondary resin is injected into a space between a primary molded product formed first and a secondary cavity Means a method of filling and molding.

The battery module assembly according to the present invention provides a large-capacity, large-capacity middle- or large-sized battery pack having a structure including two or more battery module assemblies corresponding to output and capacity.

The battery pack may be suitably used in a device or system that provides high power, large capacity, and is exposed to an external force such as impact vibration or the like and is highly likely to introduce conductive foreign matter, moisture, etc. under operating conditions. Representative examples include, but are not limited to, electric vehicles, hybrid electric vehicles, plug-in hybrid battery cars, electric motorcycles, power tools, and the like.

The structure of the high-output large-capacity battery pack and the device in which the battery pack is used and the manufacturing method thereof are well known in the art, so that detailed description thereof will be omitted herein.

As described above, the battery module assembly according to the present invention can seal the electrode terminal connection portion from the outside by the electrically insulating coating layer of the conductive connecting member and the fastening member, thereby greatly reducing the manufacturing processability and manufacturing cost.

In addition, the battery module assembly according to the present invention can stably and easily perform electrical connection, mechanical fastening, and insulation between the electrode terminals with a compact structure, so that the battery module assembly can be freely So that the design can be facilitated.

1 is a perspective view of a battery module assembly;
2 is a perspective view of a battery module assembly according to the present invention;
3 is a perspective view of the conductive connecting member of Fig. 2;
4 is a perspective view of the fastening member of Fig.

Hereinafter, the contents of the present invention will be described in detail with reference to the drawings, but the scope of the present invention is not limited thereto.

2 is a partial perspective view of a battery module assembly according to the present invention.

Referring to FIG. 2, the battery module assembly 200 for providing a high-power, large-capacity power is composed of three battery modules 210. Each of the electrode terminals (not shown) of the battery modules 210 protrudes on one side thereof and is arranged on the same line so as to be parallel to the direction in which the battery modules 210 are stacked.

In addition, the battery module assembly 200 includes the conductive connecting member 300 and the fastening member 400.

The conductive connecting member 300 electrically connects the electrode terminals (not shown) of the battery modules 210 and the through-holes 310 at positions corresponding to the separation distances of the electrode terminals (not shown) And an electrically insulating coating layer 320 is formed on the outer surface exposed to the outside in a state where the battery module 210 is mounted on the battery module 210 by the fastening member 400.

The fastening member 400 is a bolt and includes a body portion 410 having a circular shape in plan view and including a bolting groove 412 at an upper center thereof and an electrically insulating coating layer 414 formed on an outer surface thereof except for the bolting groove 412, And a fastening extension 420 extending downward from the main body 410 and having threads formed on the outer surface thereof.

The fastening member 400 is fastened to the through holes 310 of the connecting member 300 and the outer surface exposed to the outside in the state of being fastened to the connecting member 300 is wrapped with the electrically insulating coating layer 414 Lt; / RTI >

A groove 416 is formed at the lower end of the outer surface of the main body 410 and an electric insulating coating layer 414 is introduced into the groove 416 to enhance the bonding force between the body 410 and the electrically insulating coating layer. As shown in FIG.

On the other hand, the conductive connecting member 300 is a conductive plate, and an electrically insulating coating layer 320 is formed on the top surface of the conductive plate except for a portion where the coupling member 400 is coupled.

Therefore, when the fastening member 400 is attached to the conductive connecting member 300, the electric connection portions can be sealed by the respective electric insulating coating layers 320 and 414.

On the other hand, the electrically insulating application layers 320 and 414 are formed by, for example, a double injection method.

Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims (10)

  1. A battery module assembly in which two or more battery modules are electrically connected,
    Wherein the battery module is electrically connected to the electrode terminals of the battery modules and the through holes are drilled in positions corresponding to the distance between the electrode terminals, A conductive connecting member having an insulating coating layer formed thereon; And
    A fastening member fastened to the through-holes of the connection member and having an electrically insulating coating layer formed on an outer surface exposed to the outside in a state of being fastened to the connection member;
    Lt; / RTI & gt ;
    The fastening member is a bolt,
    The bolt
    A body portion having a circular shape in plan view and including a bolting groove in the center of the upper end thereof and having an electrically insulating coating layer formed on an outer surface thereof excluding the bolting groove; And
    A fastening extension part extending downward from the main body part and having a screw thread formed on an outer surface thereof;
    Lt; / RTI >
    Wherein a groove is formed at a lower end of an outer surface of the body portion to enhance a bonding force between the body portion and the electrically insulating coating layer, and an electrically insulating coating layer is formed on the groove.
  2. [2] The battery module assembly of claim 1, wherein the battery module assembly comprises two or more battery modules having a positive terminal and a negative terminal protruded on the same surface.
  3. delete
  4. delete
  5. delete
  6. The battery module assembly according to claim 1, wherein the conductive connecting member is made of a conductive plate.
  7. [7] The battery module assembly of claim 6, wherein an electrically insulating coating layer is formed on a top surface of the conductive plate except for a portion where a fastening member is coupled.
  8. The battery module assembly according to claim 1, wherein the electrically insulating coating layer is formed by a double injection method.
  9. Wherein the battery pack includes two or more battery module assemblies according to claim 1 in correspondence with output and capacity.
  10. The middle- or large-sized battery pack according to claim 9, wherein the battery pack is used as a power source for an electric vehicle, a hybrid electric vehicle, or a plug-in hybrid electric vehicle.
KR1020110136053A 2011-12-16 2011-12-16 Battery Module Having Insulating Connecting Member and Insulating Joint Member KR101400085B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110136053A KR101400085B1 (en) 2011-12-16 2011-12-16 Battery Module Having Insulating Connecting Member and Insulating Joint Member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110136053A KR101400085B1 (en) 2011-12-16 2011-12-16 Battery Module Having Insulating Connecting Member and Insulating Joint Member

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KR20130068721A KR20130068721A (en) 2013-06-26
KR101400085B1 true KR101400085B1 (en) 2014-05-28

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980080555A (en) * 1997-03-24 1998-11-25 모리시다요이치 Hard board and battery power cooling device used for battery power supply
KR19990052103A (en) * 1997-12-20 1999-07-05 정몽규 Insulation connector of battery terminal
KR20110128593A (en) * 2010-05-24 2011-11-30 에스비리모티브 주식회사 Battery module

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980080555A (en) * 1997-03-24 1998-11-25 모리시다요이치 Hard board and battery power cooling device used for battery power supply
KR19990052103A (en) * 1997-12-20 1999-07-05 정몽규 Insulation connector of battery terminal
KR20110128593A (en) * 2010-05-24 2011-11-30 에스비리모티브 주식회사 Battery module

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