WO2023075231A1 - 배터리 모듈 및 이를 포함하는 배터리 팩 - Google Patents
배터리 모듈 및 이를 포함하는 배터리 팩 Download PDFInfo
- Publication number
- WO2023075231A1 WO2023075231A1 PCT/KR2022/015528 KR2022015528W WO2023075231A1 WO 2023075231 A1 WO2023075231 A1 WO 2023075231A1 KR 2022015528 W KR2022015528 W KR 2022015528W WO 2023075231 A1 WO2023075231 A1 WO 2023075231A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery
- battery cell
- cell assembly
- module
- cells
- Prior art date
Links
- 230000000712 assembly Effects 0.000 claims description 92
- 238000000429 assembly Methods 0.000 claims description 92
- 230000004888 barrier function Effects 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/258—Modular batteries; Casings provided with means for assembling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a battery module and a battery pack including the same.
- a battery module and a battery pack that can electrically prevent an internal short circuit from being formed due to a simple electrical connection structure.
- secondary batteries capable of charging and discharging have been widely used as energy sources for wireless mobile devices.
- secondary batteries are attracting attention as an energy source for electric vehicles, hybrid electric vehicles, etc., which are proposed as a solution to air pollution such as existing gasoline vehicles and diesel vehicles using fossil fuels. Therefore, the types of applications using secondary batteries are diversifying due to the advantages of secondary batteries, and it is expected that secondary batteries will be applied to more fields and products than now.
- Such a battery module or battery pack has an outer housing made of metal to protect or house a plurality of secondary batteries from external impact.
- FIG. 1 is a plan view (FIG. 1(a)) showing an example of the structure of a battery module 100' having expandability proposed by the present applicant, and a battery module laminate 1000' constructed by stacking the battery modules 100'.
- ) is a plan view (FIG. 1 (b))
- FIG. 2 is a schematic diagram showing an electrical path of a battery module stack 1000' composed of the battery modules of FIG.
- the present applicant has a first battery cell assembly 10' in which a plurality of battery cells 1' are stacked in the battery cell thickness direction and the first battery cell assembly 10' is opposed to the battery cell longitudinal direction, and the first battery cell assembly 10' Similarly to the battery cell assembly 10 ', the battery cell assembly composed of the second battery cell assembly 20 'constituting a plurality of battery cells in the battery cell thickness direction is a rectangular parallelepiped module case 30 elongated in the longitudinal direction. A battery module 100 'accommodated in ') was developed.
- the battery module 100 ' accommodates a relatively small number of battery cells in each module case 30', and stacks the battery modules in the longitudinal direction or thickness direction of the battery cells like Lego blocks, so that the battery module ( 100') can be installed, or the battery pack can be freely configured in consideration of the installation space of the battery pack.
- the battery module 100 ′ proposed by the present applicant can manufacture various types of battery packs according to the stacking (designing) method, so it can be referred to as an expandable battery module.
- the first and second battery cell assemblies 10' and 20' facing each other in the longitudinal direction are electrically connected to each other.
- the lower two rows of battery cells of the first and second battery cell assemblies 10' and 20' are not connected to each other, but the upper two rows of battery cells are the first and second battery cell assemblies 10' and 20'. 20') are electrically connected to each other (refer to the electrical connection of A in FIG. 1(a)).
- the expandable battery module of this electrical connection structure has the following problems.
- first and second battery cell assemblies 10' and 20' are electrically connected, the electrical connection structure of the battery module itself becomes complicated, and as a result, the first and second battery cell assemblies 10' and 20' are included.
- a total of three lines (a, b, c) of high voltage bus bars were required as shown in FIG. 1 (b) to electrically connect the battery cell assemblies of each battery module.
- thermal runaway proceeds along the stacking direction of the battery modules, and thermal runaway propagates between the first battery cell assemblies 10' of the left battery modules.
- first battery cell assembly 10' of the battery modules is electrically connected to the second battery cell assembly 20' of each battery module, it is shorted to the second battery cell assembly 20' Electrically, an internal short circuit is formed in the entire battery module 100' to the battery module stack 1000' (see FIG. 2(c)).
- gas is rapidly generated and overheated, increasing the risk of explosion of the battery pack.
- Patent Document 1 Korean Patent Publication No. 10-2020-0131500
- the present invention was made to solve the above problems, a battery module and a battery pack that simplify the electrical connection structure by excluding the electrical connection between the two battery cell assemblies constituting the expandable module and prevent the occurrence of an internal short circuit. intended to provide
- a battery module for solving the above problems, a first battery cell assembly in which battery cells are stacked in the thickness direction of the battery cell; Each battery cell stacked in the first battery cell assembly and each battery cell disposed in a row in the longitudinal direction of the battery cell are stacked in the same number as the number of battery cells stacked in the first battery cell assembly in the thickness direction of the battery cell 2 battery cell assembly; And a module case accommodating the first and second battery cell assemblies, wherein the battery cells of the first battery cell assembly are electrically connected to each other, and the battery cells of the second battery cell assembly are electrically connected to each other. , It is characterized in that the battery cells are not electrically connected to each other between the first and second battery cell assemblies.
- the battery cells constituting the first battery cell assembly and the second battery cell assembly may be pouch cells from which electrode leads of different polarities are derived from both ends.
- the number of stacked battery cells of the first battery cell assembly and the second battery cell assembly is an even number.
- the battery cells included in the first battery cell assembly and the second battery cell assembly are electrically connected to electrode leads of adjacent battery cells so as to form an electrical path connected in a zigzag direction, and both ends of the electrical path Among the electrode leads at both ends of the battery cells included in the first and second battery cell assemblies, electrode leads that are respectively led toward between the first and second battery cell assemblies may be used.
- the electrode leads of the battery cells included in the first and second battery cell assemblies, respectively, leading between the first and second battery cell assemblies have opposite polarities.
- a terminal bus bar may be coupled to electrode leads respectively drawn from the first and second battery cell assemblies toward between the first and second battery cell assemblies.
- electrode leads of adjacent battery cells may be directly coupled through an interbus bar or by being bent to each other.
- a first barrier rib extending in the battery cell thickness direction may be installed between the first battery cell assembly and the second battery cell assembly.
- a second partition wall extending in the longitudinal direction of the module case may be provided at an intermediate portion of the battery cells stacked in the thickness direction of the first battery cell assembly and the second battery cell assembly.
- the battery pack includes a battery module stack formed by stacking a plurality of the above-described battery modules in the thickness direction of the battery cells, and the first battery cell assemblies of the battery modules stacked in the thickness direction are electrically connected to each other. are connected to form a first electric block, the second battery cell assemblies are electrically connected to each other to form a second electric block, and each of the first battery cell assemblies constituting the first electric block and the second electric block, and
- the second battery cell assembly is characterized in that it is not electrically connected to each other except for the first and second battery cell assemblies of the battery modules stacked on top of the battery module stack.
- the first and second battery cell assemblies of the battery modules stacked on top of the battery module stack are electrically connected by a high voltage bus bar to electrically connect the first electric block and the second electric block.
- the first high voltage bus bar electrically connecting the first battery cell assemblies to each other and the second electrically connecting the second battery cell assemblies to each other A high voltage bus bar may be installed on the battery module in a stacking direction of the battery module.
- the first high-voltage bus bar is connected to a terminal bus bar coupled to an electrode lead of a battery cell derived from the first battery cell assembly toward between the first battery cell assembly and the second battery cell assembly of each battery module.
- the second high voltage bus bar is connected to a terminal bus bar coupled to an electrode lead of a battery cell derived from the second battery cell assembly toward between the first battery cell assembly and the second battery cell assembly of each battery module.
- the electrical connection structure of the first and second battery cell assemblies may be a 1P NS structure and N may be an even number.
- the electrical connection structure of an expandable battery module including two battery cell assemblies and a battery pack constructed by stacking them can be greatly simplified.
- each battery cell assembly independently constitutes an electric circuit, formation of an internal short circuit may be delayed as much as possible or controlled to be sequentially formed. In this way, the safety of the battery pack can be further improved.
- FIG. 1 is a plan view showing an example of a structure of a battery module having expandability proposed by the present applicant and a plan view of a battery module laminated body formed by stacking the battery modules.
- FIG. 2 is a schematic diagram illustrating an electrical path of a battery module laminate composed of the battery modules of FIG. 1 .
- FIG 3 is a plan view and an enlarged view of a main part of the battery module of the present invention.
- Figure 4 is a perspective view showing the configuration of the electrode assembly of the battery module of the present invention.
- FIG. 5 is an exploded perspective view illustrating an assembly process of the battery module of FIG. 4 .
- FIG. 6 is a schematic diagram showing an electrical path in the case of stacking the battery modules of the present invention in comparison with the electrical path of FIG. 2 .
- FIG. 7 is a plan view showing an electrical connection structure of a battery module stack in which battery modules according to the present invention are stacked.
- FIG. 8 is a perspective view of a battery pack including a battery module laminate composed of battery modules according to the present invention.
- 9 is examples showing other laminated structures of the battery module of the present invention and a battery module laminate composed of the battery module.
- being disposed "on” may include the case of being disposed at the bottom as well as at the top.
- a battery module includes a first battery cell assembly in which battery cells are stacked in the thickness direction of the battery cells; Each battery cell stacked in the first battery cell assembly and each battery cell disposed in a row in the longitudinal direction of the battery cell are stacked in the same number as the number of battery cells stacked in the first battery cell assembly in the thickness direction of the battery cell 2 battery cell assembly; And a module case accommodating the first and second battery cell assemblies, wherein the battery cells of the first battery cell assembly are electrically connected to each other, and the battery cells of the second battery cell assembly are electrically connected to each other. , It is characterized in that the battery cells are not electrically connected to each other between the first and second battery cell assemblies.
- Figure 3 is a plan view and an enlarged view of main parts of the battery module of the present invention
- Figure 4 is a perspective view showing the configuration of the electrode assembly of the battery module of the present invention
- Figure 5 is an exploded perspective view showing the assembly process of the battery module of Figure 4 .
- the battery module of the present invention includes a first battery cell assembly 10 in which battery cells 1 are stacked in the thickness direction of the battery cells;
- Each battery cell 1 stacked on the first battery cell assembly 10 and each battery cell 1 arranged in a row in the longitudinal direction of the battery cell are the first battery cell assembly 10 in the thickness direction of the battery cell
- four first and second battery cell assemblies 10 and 20 are stacked in the battery cell thickness direction, respectively.
- the battery cells of the same layer of the first and second battery cell assemblies 10 and 20 are disposed to face each other in the longitudinal direction.
- the module case 30 accommodating the battery cell assemblies also has a rectangular parallelepiped shape elongated along the longitudinal direction.
- the battery cells of the first and second battery cell assemblies are respectively connected to the terminal bus bars TB1 and TB2 located between the first and second battery cell assemblies 10 and 20, but the first It can be seen that the 2 battery cell assemblies 10 and 20 are not electrically connected to each other.
- the terminal bus bar has different signs as TB1 and TB2 according to polarity.
- the battery cells constituting the first and second battery cell assemblies 10 and 20 may employ pouch cells, so-called bi-directional pouch cells, in which electrode leads having different polarities are derived from both ends of the battery cells.
- the number of battery cells 1 stacked in the battery cell thickness direction is an even number.
- a first barrier rib 40 extending in the battery cell thickness direction may be provided between the first and second battery cell assemblies 10 and 20 . Heat propagation between the first and second battery cell assemblies 10 and 20 can be prevented by the first barrier rib 40 .
- the first barrier rib 40 is not shown for convenience of illustration.
- the same number can be divided up and down. That is, the middle part of the battery cells stacked in the thickness direction of the first and second battery cell assemblies 10 and 20 (in the example of FIG. 3, between two upper and lower battery cells) extends in the longitudinal direction of the module case 30.
- a second partition wall 50 is installed. The second barrier rib 50 can prevent heat from propagating in the thickness direction.
- terminal bus bars TB1 and TB2 are provided between the first and second battery cell assemblies 10 and 20 . Specifically, when electrically connecting the stacked battery cells, the terminal bus bars TB1 and TB2 are coupled to end portions of the electrical path. As will be described later, the terminal bus bars TB1 and TB2 are coupled to high voltage bus bars and electrically connected to terminal bus bars TB1 and TB2 of adjacent battery modules.
- Figure 4 (b) and (c) is a perspective view of the first or second battery cell assembly constituting the battery module 100 of the present invention viewed from the front side and the rear side, respectively
- Figure 4 (a) is a first, 2 It is a perspective view showing the side where the battery cell assembly is disposed to face each other.
- the leads of the battery cell 1 to which the terminal bus bars TB1 and TB2 are not coupled are electrically connected to each other by the inter bus bar IB.
- the interbus bar (IB) is coupled to the support plate between the terminal bus bars (TB1, TB2) (see FIG. 4 (a)), and the longitudinal direction of the first and second battery cell assemblies 10 and 20
- the leads of the battery cells located at the ends are connected to each other by interbus bars (IB) (see FIGS. 4(b) and (c)).
- the module case 30 includes a U-shaped frame 31 having an open top and an upper frame 32 coupled thereto, but is not limited thereto. That is, the form of a C-shaped frame having one side opened and an I-shaped frame coupled thereto is also possible, and other types of module cases 30 are also possible as long as they can stably accommodate the battery cell assemblies.
- the module case 30 includes a front end plate 33 and a rear end plate 34 coupled to the front and rear ends of the battery cell assembly.
- a concave portion is formed in the center of the upper frame 32, and a through hole 32a is formed in the concave portion so that the terminal portion of the terminal bus bar coupled to the battery cell assembly can protrude.
- the terminal portion of the terminal bus bar protruding through the through hole 32a is coupled to a high voltage bus bar to be described later.
- FIG. 6 is a schematic diagram showing an electrical path in the case of stacking the battery modules of the present invention in comparison with the electrical path of FIG. 2 .
- a battery module stack may be formed by stacking a plurality of battery modules in the battery cell thickness direction. A detailed configuration of the battery module stack will be described later in relation to the battery pack.
- Figure 6 (a) is a description of the electrical path of the electrical connection structure of the battery module laminated structure consisting of the first and second battery cell assemblies of Figure 2
- Figure 6 (b) is the first and second battery cell assembly of the present invention This will explain the electrical path of the electrical connection structure of the battery module laminated structure.
- electrode leads R of adjacent battery cells are electrically connected so as to form an electrical path in which four battery cells 1 and 1' stacked in the thickness direction are connected in a zigzag direction.
- the electrode leads R of the battery cells 1 and 1' adjacent to each other are bent and directly joined by, for example, welding, or, as shown in FIG. 4, It may be electrically connected through the interbus bar (IB).
- Both ends of the electrical path connected in the zigzag direction are directed between the first and second battery cell assemblies among the electrode leads at both ends of the battery cells included in the first and second battery cell assemblies 10' and 20' (10,20), respectively. It becomes the lead-out electrode lead part.
- the polarities of the electrode leads derived from the first and second battery cell assemblies 10' and 20' (10 and 20) are reversed. Both ends of the electrical path are coupled to the above-described terminal bus bar to the electrode lead part.
- FIG. 4 (a) and FIG. 4 (b) The difference between FIG. 4 (a) and FIG. 4 (b) is that one of the electrode lead portions respectively led out between the first and second battery cell assemblies is the first and second battery cells in the example of FIG. 4 (a).
- the first and second battery cell assemblies 10 and 20 are disconnected without being connected.
- a first barrier rib 40 extending in the battery cell thickness direction is formed between the first and second battery cell assemblies, so that the electrode lead part seems to be disconnected even in the example of FIG. 6 (a), but in reality, the above They are connected to each other through the first partition wall 40 .
- a battery pack as another aspect of the present invention includes a battery module stack 1000 formed by stacking a plurality of battery modules 100 described above in the thickness direction of the battery cells, and the battery modules 1000 stacked in the thickness direction.
- the first battery cell assemblies 10 are electrically connected to each other to form a first electric block (P)
- the second battery cell assemblies 20 are electrically connected to each other to form a second electric block (Q).
- Each of the first battery cell assembly 10 and the second battery cell assembly 20 constituting the first electric block (P) and the second electric block (Q) is stacked on the top of the battery module stack 1000. It is characterized in that they are not electrically connected to each other except for the first and second battery cell assemblies 10 and 20 of the battery module to be.
- the battery pack 2000 of the present invention includes a battery module stack 1000 formed by stacking a plurality of battery modules 100 that are not electrically connected between the first and second battery cell assemblies described above in the thickness direction of the battery cells. .
- the first battery cell assemblies 10 of the battery modules 10 stacked in the thickness direction in the battery module stack 1000 are electrically connected to each other to form a first electric block P.
- the second battery cell assemblies 20 of the battery modules stacked in the thickness direction in the battery module stack 1000 are electrically connected to each other to form a second electric block Q.
- the first and second electric blocks (P ,Q) are not electrically connected in principle.
- the first and second battery cell assemblies 10 and 20 of each battery module constituting the first and second electric blocks P and Q are not electrically connected, the first and second electric blocks P and Q ) are not electrically connected to each other.
- the first and second battery cell assemblies of the battery modules stacked on the top of the battery module stack are electrically connected by, for example, a high voltage bus bar H3
- the top of the battery module stack 1000 is the first and second battery cell assemblies.
- the first electric block (P) and the second electric block (Q) are electrically connected. Therefore, referring to FIG. 7, the first and second electric blocks P and Q of eight battery modules from the bottom among the nine battery modules constituting the first electric block and the second electric block are electrically connected to each other.
- the first and second electrical blocks P and Q are electrically connected.
- 6 and 7 show an example of the battery module laminate.
- FIG. 6(a) is the same as that shown in FIG. 2, and shows that an internal short circuit is formed by thermal runaway. That is, since the battery module stack of FIG. 6 (a) has stacked battery modules 100' electrically connected between the first and second battery cell assemblies 10' and 20', the first and second battery modules of the adjacent battery modules are stacked. When the battery cell assemblies and the second battery cell assemblies are connected to each other with a high voltage bus bar to form electrical blocks P and Q, respectively, the electrical blocks P and Q are also electrically connected. In the case of FIG. 6 (a), when thermal runaway (TR) occurs in one battery cell 1' of the battery cell assembly and propagates to the battery cell 1' of the adjacent battery module, the electrical circuit is consequently connected. An internal short circuit is created.
- thermal runaway (TR) is not sequentially propagated, but the sequence of thermal runaway (TR) propagation jumps from the first battery cell assembly 10' to the second battery cell assembly 20' according to the internal short circuit. can spread beyond. in other words.
- thermal runaway propagation speed such that thermal runaway spreads left and right due to an internal short circuit instead of spreading up and down sequentially from the part where thermal runaway occurred. will speed up In this case, the amount of gas generated in the battery pack greatly increases, and the risk of explosion also rapidly increases.
- FIG. 6(b) that is, in the case of the present invention, even if thermal runaway occurs in the first battery cell assembly 10 on the left side, the thermal runaway propagates only to the upper and lower battery modules 100 and It does not propagate toward the second battery cell assembly 20 on the right side, specifically the second electric block (Q). This is because, in principle, there is no electrical connection between the first and second battery cell assemblies 10 and 20 and the first and second electric blocks P and Q, so no internal short circuit is formed.
- FIG. 7 is a plan view showing an electrical connection structure of a battery module stack in which battery modules according to the present invention are stacked.
- the battery pack including the battery module stack 1000 of the present invention.
- the first and second electrical blocks P and Q are not electrically connected. Therefore, it is a structure in which the left and right electric block parts P and Q propagate separately during thermal runaway.
- the flow of electricity must be in an inverted U shape as shown in FIG.
- the 1 and 2 battery cell assemblies 10 and 20 need to be electrically connected.
- the thermal runaway (TR) does not propagate between the first and second battery cell assemblies 10 and 20 of each battery module 100 until it reaches the top, but propagates sequentially.
- the present invention suppresses the occurrence of an internal short circuit in the battery pack, prevents thermal runaway (TR) from rapidly propagating and propagates sequentially, thereby reducing the amount of gas generation and greatly reducing the risk of explosion. will be.
- the first and second battery cell assemblies 10 and 20 of each battery module 100 When connecting the high voltage bus bars HB1 and HB2 to the provided terminal bus bars TB1 and TB2, it is sufficient if only the two high voltage bus bars HB1 and HB2 extending in the stacking direction of the battery module are provided. That is, there is no need to prepare three high voltage bus bars as shown in FIG. 1 . Accordingly, the electrical connection structure of the battery pack is greatly simplified. As shown in the enlarged view of FIG. 7, the first and second high voltage bus bars HB1 and HB2 are coupled to the terminal bus bars TB1 and TB2 of different polarities exposed above the battery module, respectively, so that the battery module 100 electrically connect the
- electrical connection between the first and second battery cell assemblies 10 and 20 of the battery module 100 stacked on the top of the battery module stack 1000 may be performed by a high voltage bus bar H3.
- the high voltage bus bar (TB1, TB2) coupled to the electrode leads of the battery cells led between the first and second battery cell assemblies 10 and 20 of the battery module 100 stacked on the top ( H3) (third high voltage bus bar) may be connected to implement an inverted U-shaped electrical path in the battery module stack.
- FIG 8 is a perspective view of a battery pack 2000 including a battery module laminate 1000 composed of battery modules according to the present invention.
- the battery module laminate 1000 is the same as that shown in FIG. 7, and two high voltage bus bars HB1 and HB2 are coupled side by side in the module stacking direction in the center of the first and second electric blocks P and Q. there is.
- the battery module stack 1000 is accommodated in an appropriate battery pack case 2100, the electrical connection structure is simplified, the utilization of space inside the pack is increased, and the battery pack 2000 capable of preventing the occurrence of an internal short circuit is obtained.
- 9 is examples showing other laminated structures and electrical connection structures of the battery module of the present invention and the battery module laminate 100 composed of the battery module.
- FIG. 9 (a) shows one battery module in which the first and second battery cell assemblies 10 and 20 formed by stacking two battery cells in the thickness direction in one battery module form a battery cell assembly of a 1P2S structure, respectively. , shows a structure in which two or four are stacked.
- FIG. 9(b) shows one battery module in which the first and second battery cell assemblies 10 and 20 formed by stacking 6 battery cells in the thickness direction in one battery module form a battery cell assembly having a 1P6S structure, respectively. , shows a structure in which two or four are stacked.
- the electrical connection structure of the first and second battery cell assemblies 10 and 20 was respectively 1P4S structure.
- the electrical connection structure of the battery module may be other structures such as 1P2S and 1P6S.
- a 1P8S electrical connection structure may also be employed.
- the electrical connection structure of the first and second battery cell assemblies 10 and 20 may be 1PNS (N is an even number).
- the second electric block (Q) formed by connecting the second battery cell assemblies 20 to each other is electrically connected to each other except for the first and second battery cell assemblies 10 and 20 of the battery module 100 at the end. It doesn't work.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims (15)
- 복수개의 전지셀이 상기 전지셀의 두께방향으로 적층된 제1 전지셀 조립체;상기 제1 전지셀 조립체에 적층된 각 전지셀과 전지셀 길이방향으로 일렬로 배치되는 각 전지셀이 그 전지셀의 두께방향으로 제1 전지셀 조립체의 전지셀 적층 개수와 동일한 개수로 적층되는 제2전지셀 조립체; 및상기 제1 및 제2 전지셀 조립체를 수용하는 모듈 케이스를 포함하고,상기 제1 전지셀 조립체의 전지셀들은 서로 전기적으로 연결되고,상기 제2 전지셀 조립체의 전지셀들은 서로 전기적으로 연결되지만,상기 제1,2 전지셀 조립체간에는 전지셀들이 서로 전기적으로 연결되지 않는 배터리 모듈.
- 제1항에 있어서,상기 제1 전지셀 조립체 및 제2 전지셀 조립체를 구성하는 전지셀은 양단으로부터 다른 극성의 전극 리드가 도출되는 파우치셀인 배터리 모듈.
- 제2항에 있어서,상기 제1 전지셀 조립체 및 제2 전지셀 조립체의 전지셀 적층개수는 짝수개인 배터리 모듈.
- 제3항에 있어서,상기 제1 전지셀 조립체 및 제2 전지셀 조립체에 포함된 전지셀들은 각각 지그재그 방향으로 연결되는 전기적 경로를 형성하도록 인접하는 전지셀들의 전극 리드가 전기 접속되고,상기 전기적 경로의 양단부는 상기 제1,2 전지셀 조립체에 포함된 전지셀의 양단의 전극 리드 중 상기 제1,2 전지셀 조립체 사이를 향하여 각각 도출되는 전극 리드가 되는 배터리 모듈.
- 제4항에 있어서,상기 제1,2 전지셀 조립체 사이를 항하여 각각 도출되는 상기 제1, 2 전지셀 조립체에 포함된 전지셀의 전극 리드는 극성이 반대인 배터리 모듈.
- 제5항에 있어서,상기 제1,2 전지셀 조립체 사이를 향하여 제1,2 전지셀 조립체로부터 각각 도출되는 전극 리드에 터미널 버스바가 결합되는 배터리 모듈.
- 제4항에 있어서,상기 지그재그 방향으로 연결되는 전기적 경로를 형성하기 위하여 인접하는 전지셀들의 전극 리드는 인터버스바를 통하여 또는 서로 절곡되어 직접 결합되는 배터리 모듈.
- 제1항에 있어서,상기 제1 전지셀 조립체와 제2 전지셀 조립체 사이에 전지셀 두께방향으로 연장되는 제1 격벽이 설치되는 배터리 모듈.
- 제1항에 있어서,상기 제1 전지셀 조립체 및 제2 전지셀 조립체의 두께방향으로 적층되는 전지셀의 중간부에 상기 모듈 케이스의 길이방향으로 연장되는 제2격벽이 구비되는 배터리 모듈.
- 제1항 내지 제9항 중 어느 한 항의 배터리 모듈을 전지셀의 두께방향으로 복수개 적층하여 이루어지는 배터리 모듈 적층체를 포함하고,상기 두께방향으로 적층되는 배터리 모듈의 제1 전지셀 조립체끼리 전기적으로 연결되어 제1 전기블럭을 형성하고, 상기 제2 전지셀 조립체끼리 전기적으로 연결되어 제2 전기블럭을 형성하며,상기 제1 전기블럭 및 제2 전기블럭을 구성하는 각 제1 전지셀 조립체 및 제2 전지셀 조립체는, 상기 배터리 모듈 적층체의 최상단에 적층되는 배터리 모듈의 제1,2 전지셀 조립체를 제외하고는 서로 전기적으로 연결되지 않는 배터리 팩.
- 제10항에 있어서,상기 배터리 모듈 적층체의 최상단에 적층되는 배터리 모듈의 제1,2 전지셀 조립체는 고전압 버스바에 의하여 전기적으로 연결되어 상기 제1 전기블럭 및 제2 전기블럭을 전기적으로 연결하는 배터리 팩.
- 제10항에 있어서,상기 제1 전기블럭 및 제2 전기블럭을 형성하기 위하여, 상기 제1 전지셀 조립체끼리 전기적으로 연결하는 제1 고전압 버스바 및 상기 제2 전지셀 조립체끼리 전기적으로 연결하는 제2 고전압 버스바가 상기 배터리 모듈의 적층방향으로 상기 배터리 모듈 상에 설치되는 배터리 팩.
- 제12항에 있어서,상기 제1 고전압 버스바는 상기 각 배터리 모듈의 제1 전지셀 조립체와 제2 전지셀 조립체 사이를 향하여 상기 제1 전지셀 조립체로부터 도출되는 전지셀의 전극 리드에 결합되는 터미널 버스바에 연결되고,상기 제2 고전압 버스바는 상기 각 배터리 모듈의 제1 전지셀 조립체와 제2 전지셀 조립체 사이를 향하여 상기 제2 전지셀 조립체로부터 도출되는 전지셀의 전극 리드에 결합되는 터미널 버스바에 연결되는 배터리 팩.
- 제10항에 있어서,상기 제1 및 제2 전지셀 조립체의 전기적 연결구조는, 1PNS구조이고 상기 N은 짝수인 배터리 팩.
- 제10항에 있어서,상기 배터리 모듈 적층체를 수용하는 배터리 팩 케이스를 더 포함하는 배터리 팩.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2023530906A JP2023551213A (ja) | 2021-10-27 | 2022-10-13 | バッテリーモジュールおよびこれを含むバッテリーパック |
EP22887434.3A EP4235924A1 (en) | 2021-10-27 | 2022-10-13 | Battery module and battery pack comprising same |
US18/038,523 US20240021946A1 (en) | 2021-10-27 | 2022-10-13 | Battery Module And Battery Pack Comprising Same |
CN202280007684.0A CN116547861A (zh) | 2021-10-27 | 2022-10-13 | 电池模块及包含电池模块的电池组 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020210144831A KR20230060283A (ko) | 2021-10-27 | 2021-10-27 | 배터리 모듈 및 이를 포함하는 배터리 팩 |
KR10-2021-0144831 | 2021-10-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023075231A1 true WO2023075231A1 (ko) | 2023-05-04 |
Family
ID=86158103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2022/015528 WO2023075231A1 (ko) | 2021-10-27 | 2022-10-13 | 배터리 모듈 및 이를 포함하는 배터리 팩 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240021946A1 (ko) |
EP (1) | EP4235924A1 (ko) |
JP (1) | JP2023551213A (ko) |
KR (1) | KR20230060283A (ko) |
CN (1) | CN116547861A (ko) |
WO (1) | WO2023075231A1 (ko) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20150022468A (ko) * | 2013-08-23 | 2015-03-04 | 주식회사 엘지화학 | 병렬 연결 구조의 적층형 전지모듈 |
KR20150059515A (ko) * | 2013-11-22 | 2015-06-01 | 주식회사 엘지화학 | 가스 배출 수단을 포함하고 있는 전지팩 |
KR20190069873A (ko) * | 2017-12-12 | 2019-06-20 | 주식회사 엘지화학 | 크로스 빔을 내장한 배터리 모듈 및 이를 포함하는 배터리 팩 |
KR20200131500A (ko) | 2019-05-14 | 2020-11-24 | 에스케이이노베이션 주식회사 | 배터리 모듈 |
CN113193270A (zh) * | 2020-01-13 | 2021-07-30 | 比亚迪股份有限公司 | 一种电池、电池模组、电池包和电动车 |
KR20210108452A (ko) * | 2018-12-29 | 2021-09-02 | 비와이디 컴퍼니 리미티드 | 배터리 트레이 및 전력 배터리 팩 |
KR20210144831A (ko) | 2019-03-28 | 2021-11-30 | 테사 소시에타스 유로파에아 | 분리 가능한 접착 스트립 |
-
2021
- 2021-10-27 KR KR1020210144831A patent/KR20230060283A/ko unknown
-
2022
- 2022-10-13 EP EP22887434.3A patent/EP4235924A1/en active Pending
- 2022-10-13 CN CN202280007684.0A patent/CN116547861A/zh active Pending
- 2022-10-13 US US18/038,523 patent/US20240021946A1/en active Pending
- 2022-10-13 WO PCT/KR2022/015528 patent/WO2023075231A1/ko active Application Filing
- 2022-10-13 JP JP2023530906A patent/JP2023551213A/ja active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20150022468A (ko) * | 2013-08-23 | 2015-03-04 | 주식회사 엘지화학 | 병렬 연결 구조의 적층형 전지모듈 |
KR20150059515A (ko) * | 2013-11-22 | 2015-06-01 | 주식회사 엘지화학 | 가스 배출 수단을 포함하고 있는 전지팩 |
KR20190069873A (ko) * | 2017-12-12 | 2019-06-20 | 주식회사 엘지화학 | 크로스 빔을 내장한 배터리 모듈 및 이를 포함하는 배터리 팩 |
KR20210108452A (ko) * | 2018-12-29 | 2021-09-02 | 비와이디 컴퍼니 리미티드 | 배터리 트레이 및 전력 배터리 팩 |
KR20210144831A (ko) | 2019-03-28 | 2021-11-30 | 테사 소시에타스 유로파에아 | 분리 가능한 접착 스트립 |
KR20200131500A (ko) | 2019-05-14 | 2020-11-24 | 에스케이이노베이션 주식회사 | 배터리 모듈 |
CN113193270A (zh) * | 2020-01-13 | 2021-07-30 | 比亚迪股份有限公司 | 一种电池、电池模组、电池包和电动车 |
Also Published As
Publication number | Publication date |
---|---|
JP2023551213A (ja) | 2023-12-07 |
KR20230060283A (ko) | 2023-05-04 |
EP4235924A1 (en) | 2023-08-30 |
CN116547861A (zh) | 2023-08-04 |
US20240021946A1 (en) | 2024-01-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2013089468A1 (ko) | 신뢰성이 향상된 전지모듈 어셈블리 및 이를 포함하는 중대형 전지팩 | |
WO2020067665A1 (ko) | 배터리 셀 조립체, 이러한 배터리 셀 조립체를 포함하는 배터리 모듈, 이러한 배터리 모듈을 포함하는 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차 | |
WO2017217641A1 (ko) | 배터리 모듈 및 이를 포함하는 배터리 팩, 자동차 | |
WO2021125469A1 (ko) | 전지 모듈 및 이를 포함하는 전지팩 | |
WO2014054888A2 (ko) | 전지팩 | |
WO2018208020A1 (ko) | 배터리 셀, 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 | |
WO2020171629A1 (ko) | 유동 너트를 구비한 단자 연결구조를 갖는 전지 모듈과 이를 포함한 전지 팩 | |
WO2021201421A1 (ko) | 전지 모듈 및 이를 포함하는 전지 팩 | |
WO2021125492A1 (ko) | 배터리 모듈 | |
WO2017217643A2 (ko) | 배터리 모듈 및 이를 포함하는 배터리 팩, 자동차 | |
WO2020116880A1 (ko) | 전지 모듈 | |
WO2021201409A1 (ko) | 전지 모듈 및 이를 포함하는 전지 팩 | |
WO2012148211A2 (ko) | 배터리 모듈 | |
WO2022158792A1 (ko) | 전지 모듈 및 이를 포함하는 전지 팩 | |
WO2017030312A1 (ko) | 셀 리드 연결 장치 및 이를 포함하는 배터리 모듈 | |
WO2023075231A1 (ko) | 배터리 모듈 및 이를 포함하는 배터리 팩 | |
WO2019151609A1 (ko) | 배터리 팩 | |
WO2022097935A1 (ko) | 전지 모듈 및 이를 포함하는 전지팩 | |
WO2022211250A1 (ko) | 전지 모듈 및 이를 포함하는 전지팩 | |
WO2022154431A1 (ko) | 전지 모듈 및 이를 포함하는 전지팩 | |
WO2021221415A1 (ko) | 전지팩 및 이를 포함하는 디바이스 | |
WO2021075743A1 (ko) | 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차 | |
WO2021075688A1 (ko) | 전지 모듈 및 이을 포함하는 전지 팩 | |
WO2021040242A1 (ko) | 전지 모듈 및 이를 포함하는 전지 팩 | |
WO2019004551A1 (ko) | 이차 전지 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 2023530906 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18038523 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280007684.0 Country of ref document: CN |
|
ENP | Entry into the national phase |
Ref document number: 2022887434 Country of ref document: EP Effective date: 20230522 |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22887434 Country of ref document: EP Kind code of ref document: A1 |