WO2023080600A1 - Bloc-batterie doté d'une structure de connexion de barre omnibus de type maille - Google Patents

Bloc-batterie doté d'une structure de connexion de barre omnibus de type maille Download PDF

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Publication number
WO2023080600A1
WO2023080600A1 PCT/KR2022/016918 KR2022016918W WO2023080600A1 WO 2023080600 A1 WO2023080600 A1 WO 2023080600A1 KR 2022016918 W KR2022016918 W KR 2022016918W WO 2023080600 A1 WO2023080600 A1 WO 2023080600A1
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WO
WIPO (PCT)
Prior art keywords
battery
parallel
series
battery module
busbars
Prior art date
Application number
PCT/KR2022/016918
Other languages
English (en)
Inventor
Chan Jae Lee
Jun Hong Shim
Dong Seog KANG
Original Assignee
Blue Sigma Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Blue Sigma Co., Ltd. filed Critical Blue Sigma Co., Ltd.
Publication of WO2023080600A1 publication Critical patent/WO2023080600A1/fr

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    • 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
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/20—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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • 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
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/512—Connection only in parallel
    • 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 disclosure relates to a battery pack applied to an electric vehicle or an energy storage system(ESS), and more particularly to a battery pack with an electrically mesh type busbar connection structure.
  • a battery cell may be a cell such as a cylindrical cell, a prismatic cell, and a pouch cell.
  • a battery module may have a multiple-connection configuration in which a plurality of cells are connected in series and in parallel.
  • a battery subpack may be a plurality of battery modules in which two or more battery modules are configured in series or in parallel.
  • a battery pack may be configured by combining a plurality of subpacks in series/parallel or may be configured by one battery subpack in case two or more subpacks are not necessary.
  • These battery packs may be classified into a battery module series type, a battery subpack parallel type, and a battery subpack series type.
  • a battery module series type battery pack may be configured to connect in series battery modules each including a plurality of battery cells connected in series and in parallel. In this case, if even one of the battery modules is defective, the entire battery pack may fail to function.
  • the battery module series type battery pack is used by most automobile manufacturers using large-capacity batteries, such as Hyundai Motor Company, GM, and IBM.
  • a battery subpack parallel type battery pack may be configured to connect in parallel battery subpacks that meet a required voltage by connecting a plurality of battery modules in series. In this case, if even one of the battery modules of the battery subpack is defective, the corresponding battery subpack may fail to function (in FIG. 4, a capacity of the battery pack may be halved).
  • the battery subpack parallel type battery pack is used in ESS systems, etc. of MWh or higher.
  • a battery subpack series type battery pack may be configured such that a battery module and a battery module are connected in parallel to form a battery module with a desired capacity, and a required voltage is met by connecting the battery modules in series.
  • the entire battery pack may fail to function.
  • an available capacity of the corresponding battery subpack may be reduced, and the voltage of the corresponding battery subpack may greatly vary during the charging/discharging, thereby reducing an available capacity of the entire battery pack.
  • the battery subpack series type battery pack is used in Tesla's electric vehicles, which use small-capacity batteries.
  • the current can flow uniformly in all the battery cells.
  • an abnormal heat generation phenomenon may be generated in the abnormal battery cell due to an increase in an internal impedance.
  • the current is concentrated to the normal battery cells due to the abnormal battery cell, and the surrounding normal battery cells are also more stressed, thereby accelerating the degradation of the battery cells as a whole.
  • the abnormal battery cell shows a higher voltage during the charging or a lower voltage during the discharging than the normal battery cells, and this phenomenon may increase the voltage and deviation of the surrounding battery cells. Due to the voltage deviation, the battery cells may be early cut off during the full-charging and full-discharging for the purpose of the safe charging and discharging, and thus the energy availability may be reduced compared to the total capacity of the battery design. Further, as the degradation accelerates and continues, the safety from heat/explosion of the battery pack may not be secured.
  • Patent Document 1 Korean Patent Application Publication No. 10-2017-0134270
  • An object of the present disclosure is to provide a battery pack with a mesh type busbar connection structure forming an entire connection structure of busbars in a mesh form by connecting in parallel battery modules each including a plurality of cells connected in series and in parallel.
  • a battery pack with a mesh type busbar connection structure comprising a first battery module in which battery cells on a plurality of rows and a plurality of columns are connected in series and in parallel through upper and lower busbars, a second battery module in which battery cells on a plurality of rows and a plurality of columns are connected in series and in parallel through upper and lower busbars, a first parallel connection part configured to connect the upper and lower busbars of the first battery module and the upper and lower busbars of the second battery module in parallel, and a main terminal positive configured to connect positive poles and negative poles of the first and second battery modules in parallel.
  • the battery pack with the mesh type busbar connection structure may further comprise a third battery module disposed in series with the first battery module, a fourth battery module disposed in series with the second battery module, a second parallel connection part configured to connect upper and lower busbars of the third battery module and upper and lower busbars of the fourth battery module in parallel, and a series-parallel connection part configured to connect the upper busbars of the first to fourth battery modules in series and in parallel.
  • the main terminal may include a first main terminal configured to connect the positive poles and the negative poles of the first and second battery modules in parallel, and a second main terminal configured to connect positive poles and negative poles of the third and fourth battery modules in parallel.
  • Each of the first parallel connection part and the second parallel connection part may include one of a female connector or a male connector connected to each row of the upper and lower busbars of the first to fourth battery modules, and a female connector or a male connector connected to the other of the female connector or the male connector.
  • the first parallel connection part may include a plurality of first parallel bridge busbars configured to connect each row of the upper and lower busbars of the first battery module and each row of the upper and lower busbars of the second battery module in parallel
  • the second parallel connection part may include a plurality of second parallel bridge busbars configured to connect each row of the upper and lower busbars of the third battery module and each row of the upper and lower busbars of the fourth battery module in parallel.
  • the series-parallel connection part may include a first series busbar configured to connect one parallel-connected row among the upper busbar of the first battery module and one parallel-connected row among the upper busbar of the third battery module in series, a second series busbar configured to connect one parallel-connected row among the upper busbar of the second battery module and one parallel-connected row among the upper busbar of the fourth battery module in series, and a parallel busbar configured to connect the first series busbar and the second series busbar in parallel.
  • the battery cell may include one of a cylindrical cell, a prismatic cell, and a pouch cell.
  • a battery pack with a mesh type busbar connection structure bar according to the present disclosure has the following effects.
  • the battery pack is a series-parallel connected pack, and battery module consists of mesh busbars.
  • the battery modules are connected in battery cell to battery cell, battery cell to battery module, and battery module to battery module, thereby securing various current paths.
  • the total power of the battery pack can be maintained/replenished.
  • An influence of degradation acceleration starting from an abnormal battery cell can be minimized to a normal battery cell due to the dispersion of the current flow.
  • it is possible to minimize the possibility of fire or explosion caused by a temperature rise of the abnormal battery cell.
  • FIGS. 1 and 2 are a plan view and a bottom view illustrating a battery pack 1 with a mesh type busbar connection structure according to a preferred embodiment of the present disclosure.
  • FIGS. 3 and 4 are a plan view and a bottom view illustrating an extended battery pack 1 in which battery modules 10 of FIGS. 1 and 2 are connected in series and in parallel.
  • FIGS. 5 and 6 are a plan view and a bottom view illustrating a plurality of extended battery packs in which battery modules 10 of FIGS. 3 and 4 are connected in series and in parallel.
  • FIGS. 7 and 8 are coupling and exploded perspective views illustrating battery modules 10 of FIG. 3.
  • FIGS. 9 and 10 are a plan view and a bottom view illustrating a battery pack 1' with a mesh type busbar connection structure according to another preferred embodiment of the present disclosure.
  • FIGS. 11 and 12 are a plan view and a bottom view illustrating an extended battery pack in which battery modules 10 of FIGS. 9 and 10 are connected in series and in parallel.
  • FIG. 13 is a schematic diagram of a battery pack with a mesh type busbar connection structure according to a preferred embodiment of the present disclosure.
  • FIGS. 14 to 16 are schematic diagrams of a conventional battery pack.
  • a singular expression can include a plural expression as long as it does not have an apparently different meaning in context.
  • a specific order of processes may be performed differently from the order described. For example, two consecutively described processes may be performed substantially at the same time, or performed in the order opposite to the described order.
  • FIGS. 1 and 2 are a plan view and a bottom view illustrating a battery pack 1 with a mesh type busbar connection structure according to a preferred embodiment of the present disclosure.
  • the battery pack 1 with a mesh type busbar connection structure may include a basic battery pack in which first and second battery modules 10a and 10b are connected in parallel.
  • the basic battery pack 1 may include the first and second battery modules 10a and 10b.
  • Each of the first and second battery modules 10a and 10b may include a plurality of battery cells 20.
  • the plurality of battery cells 20 may include a plurality of rows (parallel) and a plurality of columns (series).
  • the plurality of rows (parallel) may be configured to arrange electrodes of the same pole, and the plurality of columns (series) may be configured to alternately arrange electrodes of a positive pole and electrodes of a negative pole.
  • FIG. 8 illustrates an example where the battery cell 20 consists of cylindrical cells of 14S7P (14 series and 7 parallels). A prismatic cell or a pouch cell may also be applied.
  • the number of battery cells 20 according to the present embodiment may be increased or decreased depending on a required capacity and voltage of the battery module.
  • Each of the first and second battery modules 10a and 10b may include an upper battery holder 30 and a lower battery holder 40.
  • a plurality of battery cells 20 may be held between the upper battery holder 30 and the lower battery holder 40.
  • Each of the first and second battery modules 10a and 10b may include an upper busbar 50 and a lower busbar 60.
  • the upper busbar 50 may be welded to the electrodes of the plurality of battery cells 20 exposed from the upper battery holder 30.
  • the upper busbar 50 may include upper busbars 51 on a first row, upper busbars 52 on second and third rows, upper busbars 53 on fourth and fifth rows, upper busbars 54 on sixth and seventh rows, upper busbars 55 on eighth and ninth rows, upper busbars 56 on tenth and eleventh rows, upper busbars 57 on 12th and 13th rows, and upper busbars 58 on a 14th row.
  • the lower busbar 60 may be welded to the electrodes of the plurality of battery cells 20 exposed from the lower battery holder 40.
  • the lower busbar 60 may include lower busbars 61 on first and second rows, lower busbars 62 on third and fourth rows, lower busbars 63 on fifth and sixth rows, lower busbars 64 on seventh and eight rows, lower busbars 65 on ninth and tenth rows, lower busbars 66 on 11th and 12th rows, and lower busbars 67 on 13th and 14th rows.
  • the upper busbar 50 and the lower busbar 60 may connect the plurality of battery cells 20 in series and in parallel in a mesh form.
  • the basic battery pack 1 may include a first parallel connection part 70.
  • the first parallel connection part 70 may connect the upper and lower busbars 50 and 60 of the first battery module 10a and the upper and lower busbars 50 and 60 of the second battery module 10b in parallel.
  • the first parallel connection part 70 may include a first female connector 71.
  • the first female connector 71 may be mounted on the upper battery holder 30 of the first battery module 10a.
  • the first female connector 71 may be connected to each of the upper and lower busbars 50 and 60 of the first battery module 10a through a wire (not shown).
  • the first parallel connection part 70 may include a second female connector 73.
  • the second female connector 73 may be mounted on the upper battery holder 30 of the second battery module 10b.
  • the second female connector 73 may be connected to each of the upper and lower busbars 50 and 60 of the second battery module 10b through a wire (not shown).
  • the first parallel connection part 70 may include a first male connector 75.
  • the first male connector 75 may connect the first female connector 71 and the second female connector 73.
  • the first male connector 75 may include a pair of male connectors connected through a wire, and thus the pair of male connectors may be respectively fitted into the first female connector 71 and the second female connector 73 to connect the first female connector 71 and the second female connector 73 in parallel.
  • a male connector may be mounted on the battery module, and the battery modules may be electrically connected by a pair of female connectors. Further, the battery module and the battery module may be directly electrically connected to each other. The parallel connection between the battery modules may increase a battery capacity.
  • the basic battery pack 1 may include a main terminal 100.
  • the main terminal 100 may have a ⁇ -shape.
  • the main terminal 100 may connect positive poles and negative poles of the first battery module 10a and the second battery module 10b in parallel.
  • the main terminal 100 may be installed on both sides, i.e., an input side and an output side of the first battery module 10a and the second battery module 10b.
  • the basic battery pack 1 may further include third and fourth battery modules 10c and 10d.
  • the third battery module 10c may be disposed in parallel with the fourth battery module 10d.
  • the third and fourth battery modules 10c and 10d may be disposed in series with the first and second battery modules 10a and 10b.
  • Each of the third and fourth battery modules 10c and 10d may include a plurality of battery cells 20 in the same manner as the first and second battery modules 10a and 10b (see FIGS. 7 and 8).
  • Each of the third and fourth battery modules 10c and 10d may include an upper battery holder 30 and a lower battery holder 40 in the same manner as the first and second battery modules 10a and 10b.
  • Each of the third and fourth battery modules 10c and 10d may include an upper busbar 50 and a lower busbar 60 in the same manner as the first and second battery modules 10a and 10b.
  • the basic battery pack 1 may include a second parallel connection part 80.
  • the second parallel connection part 80 may connect in parallel the upper and lower busbars 50 and 60 of the third battery module 10c and the upper and lower busbars 50 and 60 of the fourth battery module 10d, in the same manner as the first parallel connection part 70.
  • the second parallel connection part 80 may include a third female connector 81.
  • the third female connector 81 may be mounted on the upper battery holder 30 of the third battery module 10c.
  • the third female connector 81 may be connected to each of the upper and lower busbars 50 and 60 of the third battery module 10c through a wire.
  • the second parallel connection part 80 may include a fourth female connector 83.
  • the fourth female connector 83 may be mounted on the upper battery holder 30 of the fourth battery module 10d.
  • the fourth female connector 83 may be connected to each of the upper and lower busbars 50 and 60 of the fourth battery module 10d through a wire.
  • the second parallel connection part 80 may include a second male connector 85.
  • the second male connector 85 may connect the third female connector 81 and the fourth female connector 83.
  • the second male connector 85 may include a pair of male connectors connected through a wire, and thus the pair of male connectors may be respectively fitted into the third female connector 81 and the fourth female connector 83 to connect the third female connector 81 and the fourth female connector 83.
  • a male connector may be mounted on the battery module, and the battery modules may be electrically connected by a pair of female connectors. Further, the battery module and the battery module may be directly electrically connected to each other. The parallel connection between the battery modules may increase a battery capacity.
  • the basic battery pack 1 may include a series-parallel connection part 90.
  • the series-parallel connection part 90 may connect the upper busbars 50 of the first to fourth battery modules 10a to 10d in series and in parallel.
  • the series-parallel connection part 90 may include a first series busbar 91.
  • the first series busbar 91 may connect one parallel-connected row among the upper busbar 50 of the first battery module 10a and one parallel-connected row among the upper busbar 50 of the third battery module 10c in series.
  • the first series busbar 91 may connect in series the upper busbar 58 on the 14th row of the first battery module 10a and the upper busbar 51 on the first row of the third battery module 10c.
  • the series-parallel connection part 90 may include a second series busbar 93.
  • the second series busbar 93 may connect one parallel-connected row among the upper busbar 50 of the second battery module 10b and one parallel-connected row among the upper busbar 50 of the fourth battery module 10d in series.
  • the second series busbar 93 may connect in series the upper busbar 58 on the 14th row of the second battery module 10b and the upper busbar 51 on the first row of the fourth battery module 10d.
  • the series-parallel connection part 90 may include a parallel busbar 95.
  • the parallel busbar 95 may connect the first series busbar 91 and the second series busbar 93 in parallel.
  • the series-parallel connection part 90 may have an H-shape when viewed from the plan.
  • the basic battery pack 1 can increase the desired battery capacity by connecting the battery modules using the first and second parallel connection parts and the series-parallel connection part to extend the battery modules in parallel, and can increase the desired battery voltage by extending the battery modules in series.
  • the series-parallel connection part 90 may be connected to an input side connected to the upper busbars 51 on the first row of the first battery module 10a and the second battery module 10b and an output side connected to the upper busbars 58 on the 14th row of the third battery module 10c and the fourth battery module 10d.
  • the main terminal 100 may include a first main terminal 100a connected in parallel to the first and second battery modules 10a and 10b that are the input side.
  • the main terminal 100 may include a second main terminal 100b connected in parallel to the third and fourth battery modules 10c and 10d that are the output side.
  • FIGS. 9 and 10 are a plan view and a bottom view illustrating a battery pack with a mesh type busbar connection structure according to another preferred embodiment of the present disclosure.
  • FIGS. 11 and 12 are a plan view and a bottom view illustrating an extended battery pack in which battery modules of FIGS. 9 and 10 are connected in series and in parallel.
  • a unit battery pack 1' may include first to fourth battery modules 10a to 10d in the same manner as the unit battery pack 1 of FIGS. 3 and 4.
  • the first to fourth battery modules 10a to 10d of the unit battery pack 1' have structures and functions similar to the first to fourth battery modules 10a to 10d of the unit battery pack 1, and thus are given the same reference numerals as the unit battery pack 1, and the detailed description is omitted.
  • the basic battery pack 1' may include a first parallel connection part 70'.
  • the first parallel connection part 70' may connect upper and lower busbars 50 and 60 of the first battery module 10a and upper and lower busbars 50 and 60 of the second battery module 10b in parallel.
  • the first parallel connection part 70' may include a plurality of first parallel bridge busbars 71' and 73'.
  • Each of the plurality of first parallel bridge busbars 71' and 73' may connect each row of the upper and lower busbars 50 and 60 of the first battery module 10a and each row of the upper and lower busbars 50 and 60 of the second battery module 10b in parallel.
  • the first parallel bridge busbars 71' may connect between upper busbars 52 on second and third rows, between upper busbars 53 on fourth and fifth rows, between upper busbars 54 on sixth and seventh rows, between upper busbars 55 on eighth and ninth rows, between upper busbars 56 on tenth and eleventh rows, and between upper busbars 57 on 12th and 13th rows, respectively.
  • first parallel bridge busbars 73' may respectively connect between lower busbars 61 on first and second rows, between lower busbars 62 on third and fourth rows, between lower busbars 63 on fifth and sixth rows, between lower busbars 64 on seventh and eighth rows, between lower busbars 65 on ninth and tenth rows, between lower busbars 66 on 11th and 12th rows, and between lower busbars 67 on 13th and 14th rows, respectively.
  • the basic battery pack 1' may include a second parallel connection part 80'.
  • the second parallel connection part 80' may connect upper and lower busbars 50 and 60 of the third battery module 10c and upper and lower busbars 50 and 60 of the fourth battery module 10d, in the same manner as the first parallel connection part 70' in parallel.
  • the second parallel connection part 80' may include a plurality of second parallel bridge busbars 81' and 83'.
  • Each of the plurality of second parallel bridge busbars 81' and 83' may connect each row of the upper and lower busbars 50 and 60 of the third battery module 10c and each row of the upper and lower busbars 50 and 60 of the fourth battery module 10d in parallel.
  • the second parallel bridge busbars 81' may connect between upper busbars 52 on second and third rows, between upper busbars 53 on fourth and fifth rows, between upper busbars 54 on sixth and seventh rows, between upper busbars 55 on eighth and ninth rows, between upper busbars 56 on tenth and eleventh rows, and between upper busbars 57 on 12th and 13th rows, respectively.
  • the second parallel bridge busbars 83' may respectively connect between lower busbars 61 on first and second rows, between lower busbars 62 on third and fourth rows, between lower busbars 63 on fifth and sixth rows, between lower busbars 64 on seventh and eighth rows, between lower busbars 65 on ninth and tenth rows, between lower busbars 66 on 11th and 12th rows, and between lower busbars 67 on 13th and 14th rows, respectively.
  • the basic battery pack 1' may include a series-parallel connection part 90.
  • the series-parallel connection part 90 of the basic battery pack 1' has structures and functions similar to the series-parallel connection part 90 of the basic battery pack 1.
  • the series-parallel connection part 90 may include a first series busbar 91.
  • the first series busbar 91 may connect in series the upper busbar 58 on the 14th row of the first battery module 10a and the upper busbar 51 on the first row of the third battery module 10c.
  • the series-parallel connection part 90 may include a second series busbar 93.
  • the second series busbar 93 may connect in series the upper busbar 58 on the 14th row of the second battery module 10b and the upper busbar 51 on the first row of the fourth battery module 10d.
  • the series-parallel connection part 90 may include a parallel busbar 95.
  • the parallel busbar 95 may connect the first series busbar 91 and the second series busbar 93 in parallel.
  • the series-parallel connection part 90 may have an H-shape when viewed from the plan.
  • the basic battery pack 1' can increase the desired battery capacity by connecting the battery modules using the first and second parallel connection parts and the series-parallel connection part to extend the battery modules in parallel, and can increase the desired battery voltage by extending the battery modules in series.
  • the series-parallel connection part 90 of FIGS. 11 and 12 may be configured such that the parallel busbar 95 may be connected every between the first and second series busbars 91 and 93. In this case, a current path toward the parallel busbar 95 may be consecutively formed.
  • the series-parallel connection part 90 may be connected to an input side connected to the upper busbars 51 on the first row of the first battery module 10a and the second battery module 10b and an output side connected to the upper busbars 58 on the 14th row of the third battery module 10c and the fourth battery module 10d.
  • FIG. 13 is a schematic diagram illustrating a mesh connection structure of the battery packs 1 and 1' described above.
  • the busbars marked in yellow may be connected in series and in parallel in battery cell to battery cell, battery cell to battery module, and battery module to battery module, and thus various mesh paths can be formed.
  • the battery packs each of which consist of the battery modules described above may be connected in series with the same configuration.
  • the battery packs when the battery packs are connected in series, the battery packs can be connected even if the battery packs do not have the same configuration.
  • the main terminal can be connected in series to another battery pack as well as the parallel connection between the battery modules.
  • 90 90: series-parallel connection part 91, 93: first and second series busbars

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  • 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

La présente divulgation concerne un bloc-batterie appliqué à un véhicule électrique ou à un système de stockage d'énergie (ESS), et plus particulièrement un bloc-batterie doté d'une structure de connexion de barre omnibus de type maille électrique.
PCT/KR2022/016918 2021-11-02 2022-11-01 Bloc-batterie doté d'une structure de connexion de barre omnibus de type maille WO2023080600A1 (fr)

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KR10-2021-0149033 2021-11-02
KR1020210149033A KR20230063693A (ko) 2021-11-02 2021-11-02 망 형태의 버스 바 연결 구조를 갖는 배터리 팩

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WO2023080600A1 true WO2023080600A1 (fr) 2023-05-11

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Citations (5)

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