KR101943493B1 - Battery module assembly and battery pack including the same - Google Patents

Battery module assembly and battery pack including the same Download PDF

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Publication number
KR101943493B1
KR101943493B1 KR1020150103848A KR20150103848A KR101943493B1 KR 101943493 B1 KR101943493 B1 KR 101943493B1 KR 1020150103848 A KR1020150103848 A KR 1020150103848A KR 20150103848 A KR20150103848 A KR 20150103848A KR 101943493 B1 KR101943493 B1 KR 101943493B1
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KR
South Korea
Prior art keywords
battery
connection substrate
battery module
terminal
anode
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KR1020150103848A
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Korean (ko)
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KR20170011349A (en
Inventor
김성대
이강구
Original Assignee
주식회사 엘지화학
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Priority to KR1020150103848A priority Critical patent/KR101943493B1/en
Publication of KR20170011349A publication Critical patent/KR20170011349A/en
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Publication of KR101943493B1 publication Critical patent/KR101943493B1/en

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2/00Constructional details or processes of manufacture of the non-active parts
    • H01M2/10Mountings; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2/00Constructional details or processes of manufacture of the non-active parts
    • H01M2/10Mountings; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M2/1016Cabinets, cases, fixing devices, adapters, racks or battery packs
    • H01M2/1072Cabinets, cases, fixing devices, adapters, racks or battery packs for starting, lighting or ignition batteries; Vehicle traction batteries; Stationary or load leading batteries
    • H01M2/1083Fixing on vehicles
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2/00Constructional details or processes of manufacture of the non-active parts
    • H01M2/20Current conducting connections for cells
    • H01M2/22Fixed connections, i.e. not intended for disconnection
    • H01M2/26Electrode connections
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2/00Constructional details or processes of manufacture of the non-active parts
    • H01M2/20Current conducting connections for cells
    • H01M2/30Terminals
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00Batteries for particular applications
    • H01M2220/20Batteries in motive systems, e.g. vehicle, ship, plane
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • Y02E60/122

Abstract

The present invention discloses a battery module assembly and a battery pack including the battery module assembly so that an operator who manufactures the battery pack can easily perform an operation of electrically connecting the battery module and the battery module while maintaining space efficiency.
A battery module assembly according to an aspect of the present invention includes a battery module including at least two battery cells having electrode leads; A first connection substrate assembly disposed on one side of the battery module, the first connection substrate assembly including a first anode terminal and a first anode terminal protruding from one side of the battery module; And a second anode terminal electrically connected to the first anode terminal to provide a high potential electrode of the battery module and a second anode terminal electrically connected to the first cathode terminal to provide a low potential electrode of the battery module, And a second connection substrate assembly including a second connection substrate assembly.

Description

[0001] The present invention relates to a battery module assembly and a battery pack including the battery module assembly.

The present invention relates to a battery module assembly, and more particularly, to a battery module assembly capable of changing the position of an electrode terminal of a battery module and a battery pack including the same.

2. Description of the Related Art In recent years, demand for portable electronic products such as notebook computers, video cameras, and portable telephones has rapidly increased, and electric vehicles, storage batteries for energy storage, robots, and satellites have been developed in earnest. Are being studied actively.

The secondary rechargeable batteries are nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, and lithium secondary batteries. Among them, lithium secondary batteries have almost no memory effect compared to nickel- It is very popular because of its low self-discharge rate and high energy density.

These lithium secondary batteries mainly use a lithium-based oxide and a carbonaceous material as a cathode active material and an anode active material, respectively. The lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate each coated with such a positive electrode active material and a negative electrode active material are disposed with a separator interposed therebetween, and an outer case, that is, a battery case, for sealingly storing the electrode assembly together with the electrolyte solution.

Generally, the lithium secondary battery can be classified into a can-type secondary battery in which an electrode assembly is embedded in a metal can, and a pouch-type secondary battery in which an electrode assembly is embedded in a pouch of an aluminum laminate sheet, depending on the shape of the casing.

In recent years, secondary batteries have been widely used not only in small-sized devices such as portable electronic devices, but also in medium- to large-sized devices such as automobiles and electric power storage systems. Particularly, as carbon energy is getting depleted and the interest in the environment is increasing, attention is focused on hybrid cars and electric cars worldwide, including the US, Europe, Japan, and Korea. One of the most important components in such a hybrid vehicle or an electric vehicle is a battery pack that imparts drive power to the vehicle motor. Since hybrid vehicles and electric vehicles can obtain the driving force of the vehicle through charging and discharging of the battery pack, users are more and more in the point of being able to discharge or reduce the pollutants because the fuel efficiency is higher than that of the vehicle using only the engine. The battery pack of such a hybrid vehicle or electric vehicle includes a plurality of battery cells (battery cells), and the plurality of battery cells are connected in series and in parallel to each other to improve output and capacity.

A plurality of battery cells are connected in series or parallel to constitute a battery module, and a plurality of battery modules are connected in series or in parallel to constitute a battery pack. In other words, a plurality of battery cells are assembled to constitute a unit battery module, and a plurality of battery modules are assembled to constitute a unit battery pack. At this time, the electrode leads of the battery cells are electrically connected to the electrode leads of the other battery cells, and the electrode terminals of the battery modules are electrically connected to the electrode terminals of the other battery modules.

However, in order to efficiently utilize the space, a plurality of battery modules are often housed in the case of the battery pack in a densely packed state. In this case, the operator who manufactures the battery pack suffers from difficulty in performing an operation of electrically connecting the battery module and the battery module. That is, it takes a considerable amount of time and effort for the operator to electrically connect the electrode terminals provided in the adjacent two battery modules to each other.

It is an object of the present invention to provide a battery module assembly and a battery module assembly capable of easily performing an operation of electrically connecting a battery module and a battery module to an operator of a battery pack while maintaining space efficiency, And a battery pack including the same.

Other objects and advantages of the present invention will become apparent from the following description, and it will be understood by those skilled in the art that the present invention is not limited thereto. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

According to an aspect of the present invention, there is provided a battery module assembly comprising: a battery module including at least two battery cells having electrode leads; A first connection substrate assembly disposed on one side of the battery module, the first connection substrate assembly including a first anode terminal and a first anode terminal protruding from one side of the battery module; And a second anode terminal electrically connected to the first anode terminal to provide a high potential electrode of the battery module and a second anode terminal electrically connected to the first cathode terminal to provide a low potential electrode of the battery module, And a second connection substrate assembly including a second connection substrate assembly.

The electrode leads may be composed of a positive electrode lead and a negative electrode lead extending in parallel in one direction from one side of the battery cell.

The two or more battery cells may be stacked in one direction to form a battery module.

The battery module assembly includes a lower end plate disposed at a lower portion of the battery cell located at the lowermost one of the stacked battery cells and covering a lower portion of the battery module; An upper end plate disposed on an uppermost portion of the stacked battery cells and covering an upper portion of the battery module; And at least one cartridge interposed between the stacked battery cells.

At least one groove is formed in the lower end plate, the upper end plate, and the cartridge at positions corresponding to the stacking direction of the battery cells, and the battery module assembly includes at least one of the upper end plate, And at least one elongated bolt passing through the at least one groove formed in the plate, respectively.

The second connection substrate assembly may be disposed on one side of the battery module, and may be superimposed on the first connection substrate assembly.

The first connection substrate assembly may further include a plate-shaped first connection substrate defining an outer shape of the first connection substrate assembly.

The first connection substrate may be made of an insulating material.

Wherein the first connection substrate assembly further comprises a printed circuit board, a voltage sensor for measuring a voltage of the battery cell, and a temperature sensor for measuring a temperature of the battery cell, And may be electrically connected to the sensor to receive the voltage signal and the measurement signal of the temperature sensor.

Wherein the first connection substrate assembly includes at least two first bus bars for electrically connecting the electrode leads, the first anode terminal is connected to one of the first bus bars, And may be coupled to another one of the first bus bars.

The second anode terminal may be a second anode bus electrically connected to the first anode terminal, and the second anode terminal may be a second anode bus bar electrically connected to the first anode terminal. That is, the electrode terminal can be implemented as a bus bar.

The second anode bus bar and the second anode bus bar may have a plate shape elongated in one direction and may be bent at least once.

A cathode terminal through hole is formed in one end of the second anode bus bar to allow the first anode terminal to pass therethrough and the first anode terminal is inserted into one end of the second cathode bus bar A cathode terminal through hole may be formed.

The second connection substrate assembly may further include a plate-shaped second connection substrate defining an outer shape of the second connection substrate assembly.

The second connection substrate may be made of an insulating material.

The second connection substrate may be formed with a positive hole and a negative hole to expose the first and second negative terminals respectively to the outside.

The second connection substrate assembly may further include a cathode terminal cover covering the cathode hole and a cathode terminal cover covering the cathode hole, and the cathode terminal cover and the cathode terminal cover may be formed on the second connection substrate, As shown in Fig.

The second anode terminal and the second cathode terminal may be formed in parallel on any two points on a straight line parallel to the paper surface.

The second anode terminal and the second cathode terminal may provide an electrode terminal in a direction perpendicular to a direction in which the first anode terminal and the first cathode terminal protrude.

The second anode terminal and the second cathode terminal may provide an electrode terminal in a direction from the bottom to the top along the direction in which the two or more battery cells are stacked.

According to another aspect of the present invention, there is provided a battery pack including the battery module assembly.

According to still another aspect of the present invention, there is provided an electric vehicle including the battery pack.

According to the present invention, it is possible to provide a battery module assembly and a battery pack including the battery module assembly, which enable a worker who manufactures the battery pack to easily perform an operation of electrically connecting the battery module and the battery module while maintaining space efficiency .

In addition, the present invention may have various other effects, and other effects of the present invention can be understood by the following description, and can be more clearly understood by the embodiments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further the understanding of the technical idea of the invention. And should not be construed as limiting.
1 is an exploded perspective view of a battery pack according to an embodiment of the present invention.
2 is an assembled perspective view of a battery pack according to an embodiment of the present invention.
3 is an exploded perspective view of a battery module assembly according to an embodiment of the present invention.
4 is an assembled perspective view of a battery module assembly according to an embodiment of the present invention.
5 is an exploded perspective view of the first connection substrate assembly shown in Figs. 3 and 4. Fig.
6 is an assembled perspective view of the first connection substrate assembly shown in FIG.
7 is an exploded perspective view of the second connection substrate assembly shown in Figs. 3 and 4. Fig.
8 is an assembled perspective view of the second connection substrate assembly shown in FIG.

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 as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be construed as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. In the drawings, like reference numerals are used throughout the drawings.

The embodiments of the present invention are provided to explain the present invention more fully to the ordinary artisan, so that the shape and size of the components in the drawings may be exaggerated, omitted or schematically shown for clarity. Thus, the size or ratio of each component does not entirely reflect the actual size or ratio.

FIG. 1 is an exploded perspective view of a battery pack according to an embodiment of the present invention, and FIG. 2 is an assembled perspective view of a battery pack according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, a battery pack 10 according to an embodiment of the present invention includes a battery module assembly 100 and a case.

At least two battery module assemblies 100 may be provided. In addition, the battery module assembly 100 may be housed inside the case. The battery module assembly 100 may include an electrode terminal such as a cathode terminal and a cathode terminal. The electrode terminal of the battery module assembly 100 may be electrically connected to an electrode terminal of another battery module assembly 100 through a connection member such as a bus bar, a wire, or the like.

Preferably, the electrical connection between the two or more battery module assemblies 100 may be accomplished through connection between the electrode terminals of the adjacent two battery module assemblies 100. For example, electrode terminals of the same polarity provided in two adjacent battery module assemblies 100 may be connected to each other to form a parallel connection between the battery module assemblies 100. That is, it is possible to form the parallel connection between the battery module assemblies 100 by connecting the anode terminals provided in the two battery module assemblies 100 to each other and connecting the cathode terminals to each other. As another example, by connecting the anode terminal of one of the two adjacent battery module assemblies 100 and the anode terminal of the other battery module assembly 100, Thereby forming a series connection between the battery module assemblies 100. As another example, electrode terminals provided in two adjacent battery module assemblies 100 of a plurality of battery module assemblies 100 are connected to each other in polarity, and a plurality of battery module assemblies 100 The electrode terminals provided in the two battery module assemblies 100 are connected to each other with the same polarity so that the two or more battery module assemblies 100 can form a connection type in which serial and parallel are mixed. In this way, the two or more battery module assemblies 100 can be connected in series and / or in parallel.

The case can accommodate the battery module assembly 100 described above. Optionally, the case may house the BMS 300 as well as the battery module assembly 100, and may further accommodate various components such as a cooling device.

According to one embodiment, the case may include a lower case 220 disposed at a lower portion and an upper case 210 covering an upper portion of the lower case 220. At this time, the battery module assembly 100 is mounted in the storage space formed in the lower case 220, and then the battery module assembly 100 can be coupled to the lower case 220 through a coupling member or the like. The upper case 210 can be coupled to the lower case 220 via a coupling member or the like disposed on the lower case 220 so that the casing can be completed. As the coupling member, an adhesive, a bolt / nut or the like may be employed, and various coupling members not listed may be used.

Alternatively, the battery pack 10 may further include a BMS 300. The BMS (Battery Management System) is referred to as a battery management system, a battery management unit, a battery management device, and the like. The BMS may monitor the state of the battery pack 10 and perform various control operations based thereon. Specifically, the BMS 300 may monitor the state of the battery module assembly 100 provided in the battery pack 10. [ The states of the battery pack 10 and the battery module assembly 100 are various parameters such as temperature, voltage, current, insulation resistance, SOC (State of Charge), SOH (state of health) . ≪ / RTI >

Referring again to FIG. 1, a battery pack 10 according to an embodiment of the present invention includes a total of 12 battery module assemblies 100. At this time, six battery module assemblies 100 are arranged side by side to form two rows. In addition, the electrode terminals of the battery module assemblies 100 constituting the two columns are arranged in a state of facing each other. As described later, the battery module assembly 100 according to an embodiment of the present invention is configured such that even when the electrode terminals of the battery module assembly 100 are disposed adjacent to each other with the electrode terminals facing each other, The electrode terminal of the battery module 3000 can be connected. The twelve battery module assemblies 100 are seated in a storage space formed in the lower case 220. A bracket 400 is disposed on the upper portion of the twelve battery module assemblies 100 and a BMS 300 is mounted on the bracket 400. When the lower case 220 and the upper case 210 are coupled to each other, twelve battery module assemblies 100 and the BMS 300 are received in the lower case 220 and the upper case 210. The upper case 210 is formed with a case hole 221. A hole cover 230 covering the case hole 221 is seated on the upper case 210 and a vent hole And a vent filter 232 is coupled to the filter 231. As a result, the battery pack 10 has a shape as shown in FIG.

FIG. 3 is an exploded perspective view of a battery module assembly according to an embodiment of the present invention, and FIG. 4 is an assembled perspective view of a battery module assembly according to an embodiment of the present invention.

3 and 4, a battery module assembly 100 according to an embodiment of the present invention includes a battery module 3000, a first connection substrate assembly 1000, and a second connection substrate assembly 2000 do.

The battery module 3000 may include two or more battery cells 3100. That is, the battery module 3000 is an aggregate of two or more battery cells 3100. The battery cell 3100 may be a can-type battery cell having an electrode assembly embedded in a metal can, or may be a pouch-shaped battery cell 3100 sealed with a laminate sheet. The battery cell 3100 may include an electrode lead 3110 such as a positive electrode lead 3111 and a negative electrode lead 3112.

Preferably, the two or more battery cells 3100 are stacked in one direction to form the battery module 3000. To this end, the battery module assembly 100 may further include a cartridge 3200. [

The cartridge 3200 is a component used for stacking the battery cells 3100. The cartridge 3200 is configured to hold the battery cells 3100 to prevent them from flowing and to be stacked with each other to guide assembly of the battery cells 3100 have. The cartridge 3200 can accommodate two or more battery cells 3100 in a state where two or more cartridges 3200 are stacked on each other. Such a cartridge 3200 may have a main frame 3210. [

The main frame 3210 defines the contour of the cartridge 3200. That is, the main frame 3210 is configured to form the basic skeleton structure of the cartridge 3200, and may be formed of a material such as plastic. Preferably, the main frame 3210 may be configured in the form of a multi-ring with an empty central portion. At this time, it is possible to provide a space in which the battery cell 3100 can be seated in an empty center portion. Alternatively, a cooling plate 3220 may be provided at an empty central portion to cool the battery cell 3100 in contact with the battery cell 3100. In this case, the main frame 3210 may be located on the outer periphery of the cooling plate 3220. [ The main frame 3210 may be located on the side surface of the battery cell 3100 to protect the lateral direction of the battery cell 3100 from the outside.

The cooling plate 3220 is disposed at a central portion of the cartridge 3200 and is made of a thermally conductive material such as aluminum to absorb heat generated from the battery cell 3100 and then absorbed by a cooling fluid such as air Heat can be transferred.

The battery module 3000 may further include a lower end plate 3300 and an upper end plate 3400 that cover the lower and upper portions of the battery module 3000, respectively.

The lower end plate 3300 and the upper end plate 3400 have a plate shape and cover the lower and upper portions of the battery module 3000 to protect the battery module 3000 from the outside. Preferably, the lower end plate 3300 and the upper end plate 3400 may be formed of a metal material having high physical durability.

That is, the lower end plate 3300 is disposed at the lower part of the battery cell 3100 located at the lowermost one of the stacked battery cells 3100, covers the lower part of the battery module 3000, 3400 may be disposed on top of the battery cell 3100 located at the top of the stacked battery cells 3100 to cover the upper portion of the battery module 3000.

Optionally, the lower end plate 3300 and / or the upper end plate 3400 may be coupled to the battery module 3000. That is, the lower end plate 3300 and / or the upper end plate 3400 may be coupled to the battery module 3000 while covering the lower and upper portions of the battery module 3000, respectively.

According to one embodiment, the lower end plate 3300, the upper end plate 3400, and the cartridge 3200 may be provided with at least one groove at a position corresponding to the stacking direction of the battery cells 3100, respectively . The upper end plate 3400, the cartridge 3200, and the upper end plate 3400 are formed by stacking the lower end plate 3300, the cartridge 3200, and the upper end plate 3400 in this order, The lower end plate 3300 can be engaged. The long bolt LB sequentially passes through the groove and then the nut N is coupled to the end of the long bolt LB to strengthen the coupling force.

3 and 4, a battery module 3000 according to an embodiment of the present invention includes sixteen battery cells 3100, eight cartridges 3200, one lower end plate 3300, and one End upper plate 3400. The upper end plate 3400 includes a plurality of upper end plates 3400. [

Two battery cells 3100 are arranged one above the other and one below the one cartridge 3200 so that sixteen battery cells 3100 are placed in eight cartridges 3200. [ A lower end plate 3300 and an upper end plate 3400 are disposed on the uppermost and lowermost surfaces of the assembly composed of the eight cartridges 3200 and the sixteen battery cells 3100, respectively. After the long bolt LB passes through the groove formed together with the lower end plate 3300 and the upper end plate 3400 and the eight cartridges 3200 disposed therebetween, The nuts N are coupled and the battery module 3000 is stably coupled.

Here, the 16 battery cells 3100 are connected in parallel in pairs in the order of stacking. That is, the positive electrode lead 3111 and the negative electrode lead 3112 of the two battery cells 3100 are electrically connected to the six battery cells 3100 in contact with the negative electrode lead 3112, Operates as eight battery cells 3100 whose capacity is doubled. The eight pairs of battery cells 3100, which are connected in pairs, are connected in series with each other. At this time, the electrode leads 3110 of the battery cells 3100 are bent upward or downward and contact the electrode leads 3110 of the adjacent battery cells 3100.

3 (3100_03) is connected in parallel with the battery cell # 4 (3100_04), and the battery cell # 3 (3100_03) is connected in parallel with the battery cell # The battery cell # 5 3100_05 is connected in parallel with the battery cell # 6 3100_06, the battery cell # 7 3100_07 is connected in parallel with the battery cell # 8 3100_08, The battery cell # 11 3100_11 is connected in parallel with the battery cell # 12 3100_12 and the battery cell # 13 3100_13 is connected in parallel with the battery cell # And the battery cell # 15 (3100_15) is connected in parallel with the battery cell # 16 (3100_16). The pair of battery cells formed by the battery cells # 1 (3100_01) and the battery cells # 2 (3100_02) are connected to a pair of battery cells formed by the battery cells # 3 (3100_03) and the battery cells # And a pair of battery cells formed by battery cell # 3 3100_03 and battery cell # 4 3100_04 are connected to a pair of battery cells formed by battery cell # 5 3100_05 and battery cell # And the pairs of the remaining battery cells are also connected in series so that the eight pairs of battery cells form a series connection state with each other. That is, the 16 battery cells form a so-called 2P8S structure. 3, the electrode leads 3110 provided on the right side of each of the battery cells # 1 (3100_01) and the battery cells # 2 (3100_02) are all the negative electrode leads 3112, and the battery cells # 15 And the electrode leads 3110 provided on the left side of each of the battery cells # 3100_15 and 3100_16 are all the positive electrode leads 3111. Therefore, the positive electrode lead 3111 of the battery cell # 15 (3100_15) and the battery cell # 16 (3100_16) provides the positive electrode of the battery module 3000 and the battery cell # 1 3100_01 and the battery cell # The negative electrode lead 3112 of the battery module 3000 provides the negative electrode of the battery module 3000.

According to one embodiment, the battery module 3000 shown in FIG. 3 may be assembled through the following process.

First, one battery cell 3100 is seated on the lower end plate 3300, and one cartridge 3200 is disposed on the seated battery cell 3100. And another battery cell 3100 is seated on the upper portion of the cartridge 3200 disposed above the battery cell 3100. [ That is, one battery cell 3100 is seated on the upper and lower portions of one cartridge 3200, respectively.

Then, seven cartridges 3200 are stacked in the same manner on the cartridge 3200 on which the battery cells 3100 are respectively mounted on the upper and lower portions. At this time, the seven cartridges 3200 are each in a state in which two battery cells 3100 are seated. As a result, two battery cells 3100 are placed in one cartridge 3200, and 16 battery cells 3100 are stacked via eight cartridges 3200. [

Next, the upper end plate 3400 is seated on the upper portion of the battery cell 3100 disposed at the uppermost position. As a result, the lower end plate 3300 and the upper end plate are disposed on the uppermost surface and the lowermost surface, respectively, of the aggregate of the eight cartridges 3200 and the sixteen battery cells 3100 accommodated in each of the eight cartridges 3200 do. The assembled battery module 3000 is firmly coupled through a coupling member such as a long bolt LB or the like.

Meanwhile, the assembly process is one embodiment, and the battery module 3000 may be assembled differently from the assembly process.

Referring again to FIGS. 3 and 4, a first connection substrate assembly 1000 and a second connection substrate assembly 2000 are shown on one side of the battery module 3000.

The first connection substrate assembly 1000 may be disposed on one side of the battery module 3000. The first connection substrate assembly 1000 may include a first anode terminal 1200 and a first anode terminal 1300 as electrode terminals. The electrode terminal may protrude from one side of the battery module 3000, and a thread may be formed on an outer circumferential portion of the electrode terminal. That is, the electrode terminal may have a shape of a bolt (B), and may be configured such that the nut (N) is coupled to the electrode terminal. The first anode terminal 1200 protrudes from one side of the battery module 3000 to provide a positive electrode of the battery module 3000 or a high potential electrode of the battery module 3000, The terminal 1300 may protrude from one side of the battery module 3000 to provide a cathode of the battery module 3000, that is, a low potential electrode.

The first connection substrate assembly 1000 may further include a first connection substrate 1100. The first connection substrate 1100 is a plate-shaped frame that defines an outer shape of the first connection substrate assembly 1000. The first connection substrate 1100 includes the first anode terminal 1200 and the first anode terminal 1200 on the first connection substrate 1100, A cathode terminal 1300 may be provided. Preferably, the first connection substrate 1100 may be made of an insulating material.

The first connection substrate assembly 1000 may further include a first bus bar 1400 that electrically connects the electrode leads 3110 of the battery cells 3100 included in the battery module 3000 . More than two first bus bars 1400 may be provided to mediate an electrical connection between the electrode leads 3110 and the electrode leads 3110. According to one embodiment, the at least two electrode leads 3110 and the first bus bar 1400 are mechanically coupled by welding, so that at least two electrode leads 3110 can be electrically connected. The first anode terminal 1200 is connected to one of the first bus bars 1400 and the first anode terminal 1300 is connected to another one of the first bus bars 1400. [ Thereby providing the positive and negative electrodes of the battery module 3000, respectively.

According to one embodiment, the first connecting substrate 1100 may be manufactured by an insert injection method to insulate the first bus bars 1400 from each other.

According to another embodiment, the first bus bars 1400 may be coupled to the first connection substrate 1100 in a form assembled with the first connection substrate 1100.

The first connection substrate assembly 1000 may further include a printed circuit board 1500, a voltage sensor 1600, and a temperature sensor 1700. The temperature sensor 1700 can measure the temperature around the temperature sensor 1700. The voltage sensor 1600 can measure the voltage of the configuration in which the voltage sensor 1600 is contacted. Preferably, the temperature sensor 1700 may be coupled to the first connection substrate 1100, and more preferably, may be detachably mounted on the first connection substrate 1100. Also, preferably, the voltage sensor 1600 may be coupled to the first connection substrate 1100. The voltage sensor 1600 may be configured to measure a voltage of the first bus bar 1400 or the electrode lead 3110 in contact with the first bus bar 1400 or the electrode lead 3110. The printed circuit board 1500 may be coupled to the first connection board 1100. The printed circuit board 1500 may be electrically connected to the voltage sensor 1600 and the temperature sensor 1700 to receive a measurement signal from the voltage sensor 1600 and the temperature sensor 1700. A sensing connector 1900 is connected to the printed circuit board 1500 to transmit information of the battery module 3000 to the BMS 300.

The second connection substrate assembly 2000 may be disposed on one side of the battery module 3000. Optionally, the second connection substrate assembly 2000 may be superimposed on the first connection substrate assembly 1000. The second connection substrate assembly 2000 may overlap the first connection substrate assembly 1000 to change the position of the electrode terminal provided by the first connection substrate assembly 1000.

The second connection substrate assembly 2000 may include a second anode terminal 2200 and a second cathode terminal 2300 as electrode terminals. The second anode terminal 2200 and the second cathode terminal 2300 are electrically connected to the first anode terminal 1200 and the first anode terminal 1300 provided in the first connection substrate assembly 1000 . The second anode terminal 2200 may be electrically connected to the first anode terminal 1200 to provide a high potential electrode of the battery module 3000 to the outside. The second cathode terminal 2300 may be electrically connected to the first cathode terminal 1300 to provide a low potential electrode of the battery module 3000 to the outside.

At this time, the second anode terminal 2200 and the second cathode terminal 2300 may be formed at positions different from the positions where the first anode terminal 1200 and the first anode terminal 1300 are formed, respectively. That is, the second anode terminal 2200 and the second anode terminal 2300 may function to change the position of the electrode of the battery module 3000. The second anode terminal 2200 and the second cathode terminal 2300 are formed to provide electrodes in a direction different from the direction in which the first anode terminal 1200 and the first anode terminal 1300 protrude, . That is, the second anode terminal 2200 and the second anode terminal 2300 function to change the position and / or direction of the electrode of the battery module 3000, Electrode.

The second connection substrate assembly 2000 may further include a second connection substrate 2100. The second connection substrate 2100 is a plate-shaped frame that defines the external shape of the second connection substrate assembly 2000. The second connection substrate 2100 includes the second anode terminal 2200 and the second anode terminal 2200 on the second connection substrate 2100, A cathode terminal 2300 may be provided. Preferably, the second connection substrate 2100 may be made of an insulating material. At this time, the second connection substrate 2100 may be manufactured by an insert injection method.

When the second connection substrate assembly 2000 is superimposed on the first connection substrate assembly 1000, the first connection terminal 2100 and the second connection terminal assembly 2000 are connected to the second connection terminal 2100, An air gap hole for exposing can be formed. That is, the second connection substrate 2100 is formed with a positive electrode gap hole 2110 for exposing the first positive electrode terminal 1200 to the outside and a negative electrode gap hole 2120 for exposing the first negative electrode terminal 1300 to the outside .

Alternatively, the second connection substrate assembly 2000 may further include a cathode terminal cover 2600 covering the cathode hole 2110 and a cathode terminal cover 2700 covering the cathode hole 2120 can do. The anode terminal cover 2600 and the cathode terminal cover 2700 may be detachably attached to the second connection substrate 2100.

In addition, the second connection substrate assembly 2000 may include a second anode bus bar 2400 and a second anode bus bar 2500. The second anode bus bar 2400 is a bus electrically connected to the first anode terminal 1200 and the second anode bus bar 2500 is electrically connected to the first anode terminal 1300 It's a bus ride. According to one embodiment, the second anode bus bar 2400 and the second anode bus bar 2500 may function as a second anode terminal 2200 and a second cathode terminal 2300, respectively. That is, the second anode terminal 2200 may be implemented as a second anode bus bar 2400, and the second anode terminal 2300 may be implemented as a second anode bus bar 2500.

According to one embodiment, the second anode bus bar 2400 and the second anode bus bar 2500 may have a plate shape and a long elongated shape. The second anode bus bar 2400 and the second anode bus bar 2500 may be bent at least once. At this time, one end of the second anode bus bar 2400 may be in contact with the first anode terminal 1200, and the other end of the second anode bus bar 2400 may be in contact with the external terminal. Here, the second anode bus bar 2400 can electrically connect the first anode terminal 1200 and the external terminal at different positions using the bent structure.

Similarly, one end of the second negative bus bar 2500 may be in contact with the first negative terminal 1300, and the other end of the second negative bus bar 2500 may be in contact with the outer terminal. Here, the second anode bus bar 2400 and the second anode bus bar 2500 can electrically connect the first cathode terminal 1300 and the external terminal at different positions using the bent structure.

In addition, through holes may be formed at the ends of the second anode bus bar 2400 and the second anode bus bar 2500, respectively. The cathode terminal through holes 2410 may be formed at both ends of the second anode bus bar 2400 and the anode terminal through holes 2510 may be formed at both ends of the second anode bus bar 2500, Can be formed. The cathode terminal through hole 2410 provides a space through which the first anode terminal 1200 can penetrate and the cathode terminal through hole 2510 has a space through which the first anode terminal 1300 can pass .

FIG. 5 is an exploded perspective view of the first connection substrate assembly 1000 shown in FIGS. 3 and 4. FIG. 6 is an assembled perspective view of the first connection substrate assembly 1000 shown in FIG. That is, FIG. 6 is an enlarged view of the first connection substrate assembly 1000 shown in FIG. 3 and FIG.

5 and 6, a first connection substrate assembly 1000 according to an embodiment of the present invention includes a first connection substrate 1100, a first anode terminal 1200, a first anode terminal 1300, Nine first bus bars 1400, a temperature sensor 1700, and a printed circuit board 1500. The first connection substrate 1100 is made of an insulating material and can isolate the first bus bars 1400 from each other. On the other hand, for ease of explanation, the nine first bus bars 1400 are given reference numerals respectively.

Here, the first bus bar 1400_01 indicated by reference numeral 1400_01 is electrically connected to the negative electrode lead 3112 of the battery cell # 1 3100_01 and the negative electrode lead 3112 of the battery cell # 2 3100_02 . The first bus bar 1400_02 indicated by reference numeral 1400_02 contacts the positive electrode lead 3111 of the battery cell # 1 3100_01 and the positive electrode lead 3111 of the battery cell # 2 3100_02, 3 3100_03 and the negative electrode lead 3112 of the battery cell # 4 3100_04 and is electrically connected. The first bus bar 1400_03 indicated by reference numeral 1400_03 contacts the positive electrode lead 3111 of the battery cell # 3 3100_03 and the positive electrode lead 3111 of the battery cell # 4 3100_04, 5 3100_05 and the negative electrode lead 3112 of the battery cell # 6 3100_06 and is electrically connected. The first bus bar 1400_04 indicated by reference numeral 1400_04 contacts the positive electrode lead 3111 of the battery cell # 5 3100_05 and the positive electrode lead 3111 of the battery cell # 6 3100_06, 7 3100_07 and the negative electrode lead 3112 of the battery cell # 8 3100_08 and are electrically connected. The first bus bar 1400_05 indicated by reference numeral 1400_05 contacts the positive electrode lead 3111 of the battery cell # 7 3100_07 and the positive electrode lead 3111 of the battery cell # 8 3100_08, 9 (3100_09) and the negative electrode lead 3112 of the battery cell # 10 (3100_10). The first bus bar 1400_06 indicated by reference numeral 1400_06 contacts the positive electrode lead 3111 of the battery cell # 9 (3100_09) and the positive electrode lead 3111 of the battery cell # 10 (3100_10) 11 3100_11 and the negative electrode lead 3112 of the battery cell # 12 3100_12. The first bus bar 1400_07 indicated by reference numeral 1400_07 contacts the positive electrode lead 3111 of the battery cell # 11 3100_11 and the positive electrode lead 3111 of the battery cell # 12 3100_12, 13 3100_13 and the negative electrode lead 3112 of the battery cell # 14 3100_14. The first bus bar 1400_08 indicated by reference numeral 1400_08 contacts the positive electrode lead 3111 of the battery cell # 13 (3100_13) and the positive electrode lead 3111 of the battery cell # 14 (3100_14) 15 3100_15 and the negative electrode lead 3112 of the battery cell # 16 3100_16. Finally, the first bus bar 1400_09 indicated by reference numeral 1400_09 contacts the positive electrode lead 3111 of the battery cell # 15 (3100_15) and the positive electrode lead 3111 of the battery cell # 16 (3100_16) do. As described above, two battery cells connected in parallel form a pair, and eight pairs of battery cells can be connected in series (2P8S).

At this time, the first bus bar 1400_01 denoted by reference numeral 1400_01 and the first bus bar 1400_09 denoted by reference numeral 1400_09 have a bent structure. The first bus bar 1400_01 indicated by reference numeral 1400_01 is in contact with and electrically connected to the first negative terminal 1300 and the first bus bar 1400_09 indicated by reference numeral 1400_09 is connected to the first positive terminal 1200, And are electrically connected to each other. That is, the first bus bar 1400_01 indicated by reference numeral 1400_01 serves as a medium for connecting the lowest potential cathode lead 3112 of the eight pairs of battery cells 3100 connected in series to the first cathode terminal 1300, The first bus bar 1400_09 denoted by reference numeral 1400_09 serves as an intermediary for connecting the highest potential anode lead 3111 of the eight pairs of battery cells 3100 connected in series to the first anode terminal 1200. [

Accordingly, the first anode terminal 1200 functions as a positive terminal of the battery module 3000, and the first negative terminal 1300 functions as a negative terminal of the battery module 3000.

A space for inserting the sensing connector 1900, the temperature sensor 1700, and the temperature sensing port 1800 is formed on the first connection substrate 1100, Lt; / RTI > The printed circuit board 1500 is coupled to the back surface of the first connection substrate 1100 through two bolts B and is connected to the temperature sensing port 1800 and connected to the temperature sensor 1700 Of the sensing information. The printed circuit board 1500 transmits the sensing information of the temperature sensor 1700 and the sensing information of the voltage sensor 1600 to the BMS 300 through the sensing connector 1900.

FIG. 7 is an exploded perspective view of the second connection substrate assembly 2000 shown in FIGS. 3 and 4. FIG. 8 is an assembled perspective view of the second connection substrate assembly 2000 shown in FIG. 8 is an enlarged view of the second connection substrate assembly 2000 shown in Figs. 3 and 4. As shown in Fig.

Referring to FIGS. 7 and 8, a second connection substrate assembly 2000 according to an embodiment of the present invention includes a second connection substrate 2100, two second bus bars, two terminal covers, and a rear substrate . The second connection substrate 2100 may be made of an insulating material in the same manner as the first connection substrate 1100 described above to insulate the second bus bars from each other. Here, the two second bus bars are a second anode bus bar 2400 electrically connected to the first anode terminal 1200 and a second anode bus bar 2500 electrically connected to the first cathode terminal 1300 . The second anode bus bar 2400 and the second anode bus bar 2500 both have an L shape and are bent at one end. In addition, a cathode terminal through hole 2410 and a cathode terminal through hole 2510 are formed at both ends of the second bus bar, respectively. The positive electrode terminal through hole 2410 formed at one end of the second positive electrode bus bar 2400 provides a space through which the first positive electrode terminal 1200 can penetrate and the positive electrode terminal through hole 2410 ) Provides a space through which the external terminals can pass. Similarly, the cathode terminal through hole 2510 formed at one end of the second cathode bus bar 2500 provides a space through which the first cathode terminal 1300 can pass, and the cathode terminal through hole 2510 is provided at the other end of the second cathode bus bar 2500 The formed cathode terminal through hole 2510 provides a space through which the external terminal can pass.

On the other hand, the L-shaped second anode bus bar 2400 has a bent shape at one end. The first anode terminal 1200 may be in contact with the other unbended end of the second anode bus bar 2400 and the external terminal may be in contact with the bent end of the second anode bus bar 2400. Therefore, unlike the first anode terminal 1200 protruding in the front direction, the second anode terminal 2200 can be configured to face upward. Likewise, the second cathode bus bar 2500 having an L shape also has a bent shape at one end. The first negative electrode terminal 1300 is brought into contact with the other end of the second negative electrode bus bar 2500 that is not bent and the external terminal can be brought into contact with the bent end of the second negative electrode bus bar 2500, The cathode terminal 2300 may also be configured to face upward as in the case of the second anode terminal 2200.

The rear substrate 2800 is coupled to the second connection substrate 2100 in the back direction. At this time, a second bus bar is interposed between the second connection substrate 2100 and the rear substrate 2800.

In the second connection substrate assembly 2000 shown in the figure, when the first and second anode terminals 1200 and 1300 are overlapped with the first connection substrate assembly 1000, A positive hole 2110 and a negative hole 2120 are formed. The first anode terminal 1200 is exposed through the anode aperture hole 2110 and the first anode terminal 1300 is exposed through the cathode aperture hole 2120. [

7 and 8, in order to cover the first anode terminal 1200 and the first anode terminal 1300 thus exposed, two terminal covers are provided. The anode terminal cover 2600 covers the first anode terminal 1200 and the cathode terminal cover 2700 covers the first cathode terminal 1300. [ The cathode terminal cover 2600 and the cathode terminal cover 2700 are detachably attached to the second connection substrate 2100. The two terminal covers surround the first anode terminal 1200 and the first anode terminal 1300 to prevent unnecessary electrical contact from occurring.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

In the present specification, when terms such as upward, downward, leftward, rightward, forward, and backward are used, these terms are for convenience of explanation only and are not intended to limit the scope of the present invention. It is apparent to those skilled in the art that the present invention is not limited thereto.

10: Battery pack (10) 100: Battery module assembly (100)
210: upper case 210, 220: lower case 220,
221: case hole 221: 230: hole cover 230:
231: vent hole (231) 232: vent filter (232)
300: BMS (300) 400: Bracket (400)
1000: first connection substrate assembly (1000) 1100: first connection substrate (1100)
1200: first anode terminal 1200 1300: first anode terminal 1300
1400: first bus bar (1400) 1500: printed circuit board (1500)
1600: voltage sensor 1600 1700: temperature sensor 1700:
1800: Temperature sensing port (1800) 1900: Sensing connector (1900)
2000: second connection substrate assembly 2000, 2100: second connection substrate 2100,
2110: Positive electrode hole 2110: Positive electrode hole 2120:
2200: second anode terminal (2200) 2300: second cathode terminal (2300)
2400: second anode bus bar (2400) 2410: anode terminal through hole (2410)
2500: second cathode bus bar (2500) 2510: cathode terminal through hole (2510)
2600: positive terminal cover (2600) 2700: negative terminal cover (2700)
2800: Rear board 2800 3000: Battery module 3000
3100: Battery cell (3100) 3110: Electrode lead (3110)
3111: positive electrode lead 3111 3112: negative electrode lead 3112:
3200: Cartridge (3200) 3210: Main frame (3210)
3220: cooling plate (3220) 3300: lower end plate (3300)
3400: Upper end plate 3400:

Claims (22)

  1. A battery module including at least two battery cells each having a positive electrode lead and a negative electrode lead extended in parallel with each other;
    A battery module comprising: a first connection substrate; at least two first bus bars; a first anode terminal protruding from a first side of the battery module in a first direction; and a first cathode terminal, A connecting board assembly; And
    A second connection substrate assembly including a second connection substrate, a second anode bus bar and a second cathode bus bar,
    Lt; / RTI >
    Wherein each of the two or more first bus bars electrically connects either the positive electrode lead or the negative electrode lead of the two or more battery cells to the positive electrode lead or the negative electrode lead of the other one of the two or more battery cells,
    Wherein the first anode terminal is connected to one of the at least two first bus bars,
    Wherein the first negative terminal is connected to the other of the two or more first bus bars,
    Wherein the second anode bus bar has one end electrically connected to the first anode terminal and the other end bent from the one end of the second anode bus bar, Providing a high potential electrode of the module,
    Wherein the second cathode bus bar has one end electrically connected to the first anode terminal and the other end bent from the one end of the second cathode bus bar, And providing a low potential electrode of the battery module.
  2. delete
  3. The method according to claim 1,
    Wherein the at least two battery cells are stacked along the second direction to form a battery module.
  4. The method of claim 3,
    The battery module assembly includes:
    A lower end plate disposed at a lower portion of the battery cell located at the lowermost one of the stacked battery cells and covering a lower portion of the battery module;
    An upper end plate disposed on an uppermost portion of the stacked battery cells and covering an upper portion of the battery module; And
    Further comprising: at least one cartridge interposed between the stacked battery cells.
  5. 5. The method of claim 4,
    At least one groove is formed in the lower end plate, the upper end plate, and the cartridge at positions corresponding to the stacking direction of the battery cells,
    Wherein the battery module assembly further comprises at least one long bolt passing through the at least one groove formed in the upper end plate, the cartridge, and the lower end plate, respectively.
  6. The method according to claim 1,
    Wherein the second connection substrate assembly is disposed on one side of the battery module, and is overlapped on the first connection substrate assembly.
  7. The method according to claim 1,
    Wherein the first connection substrate is a plate shape defining an outer shape of the first connection substrate assembly.
  8. The method according to claim 1,
    Wherein the first connection substrate is made of an insulating material.
  9. The method according to claim 1,
    The first connection substrate assembly may further include a printed circuit board, a voltage sensor for measuring a voltage of the battery cell, and a temperature sensor for measuring a temperature of the battery cell,
    Wherein the printed circuit board is electrically connected to the voltage sensor and the temperature sensor to receive a measurement signal of the voltage sensor and the temperature sensor.
  10. delete
  11. delete
  12. delete
  13. The method according to claim 1,
    A cathode terminal through hole is formed in the one end of the second anode bus bar to allow the first anode terminal to pass therethrough,
    And a cathode terminal through hole is formed in the one end of the second cathode bus bar to allow the first cathode terminal to pass therethrough.
  14. The method according to claim 1,
    Wherein the second connection substrate is a plate shape defining an outer shape of the second connection substrate assembly.
  15. The method according to claim 1,
    Wherein the second connection substrate is made of an insulating material.
  16. The method according to claim 1,
    Wherein the second connection substrate is provided with a positive electrode hole and a negative electrode hole for exposing the first positive electrode terminal and the first negative electrode to the outside, respectively.
  17. 17. The method of claim 16,
    The second connection substrate assembly may further include a cathode terminal cover covering the cathode hole and a cathode terminal cover covering the cathode hole,
    Wherein the positive terminal cover and the negative terminal cover are detachably attachable to the second connection substrate.
  18. The method according to claim 1,
    Wherein the second anode bus bar and the second anode bus bar are formed in parallel on two points on a straight line parallel to the paper surface.
  19. delete
  20. The method according to claim 1,
    Wherein the second direction is a direction in which the two or more battery cells are stacked.
  21. A battery pack comprising the battery module assembly according to any one of claims 1, 3 to 9, 13 to 18, and 20.
  22. An electric vehicle including the battery pack according to claim 21.
KR1020150103848A 2015-07-22 2015-07-22 Battery module assembly and battery pack including the same KR101943493B1 (en)

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CN201690000449.0U CN208959324U (en) 2015-07-22 2016-07-11 Battery module assembly, battery pack and electric car
PCT/KR2016/007519 WO2017014470A1 (en) 2015-07-22 2016-07-11 Battery module assembly and battery pack including same

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KR102043969B1 (en) * 2017-04-18 2019-11-12 주식회사 엘지화학 Battery module
WO2018194296A1 (en) * 2017-04-18 2018-10-25 주식회사 엘지화학 Battery module
KR20190051237A (en) * 2017-11-06 2019-05-15 주식회사 엘지화학 Battery Pack enhanced assembling structure
KR20190056013A (en) * 2017-11-16 2019-05-24 주식회사 엘지화학 Battery Module Having Sensing Assembly and Busbar Assembly

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KR20150044800A (en) * 2013-10-17 2015-04-27 주식회사 엘지화학 Battery pack
KR101642325B1 (en) * 2013-10-17 2016-07-25 주식회사 엘지화학 Battery module and battery pack including the same
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KR101340010B1 (en) 2011-05-25 2013-12-10 삼성에스디아이 주식회사 Battery pack
KR101329252B1 (en) 2012-07-11 2013-11-13 한국단자공업 주식회사 Series connection apparatus of battery module

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