WO2024114011A1 - Ensemble d'acquisition d'informations de batterie et module de batterie - Google Patents

Ensemble d'acquisition d'informations de batterie et module de batterie Download PDF

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Publication number
WO2024114011A1
WO2024114011A1 PCT/CN2023/116758 CN2023116758W WO2024114011A1 WO 2024114011 A1 WO2024114011 A1 WO 2024114011A1 CN 2023116758 W CN2023116758 W CN 2023116758W WO 2024114011 A1 WO2024114011 A1 WO 2024114011A1
Authority
WO
WIPO (PCT)
Prior art keywords
bracket
bracket body
battery information
battery
circuit board
Prior art date
Application number
PCT/CN2023/116758
Other languages
English (en)
Chinese (zh)
Inventor
宁封锋
Original Assignee
湖北亿纬动力有限公司
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 湖北亿纬动力有限公司 filed Critical 湖北亿纬动力有限公司
Publication of WO2024114011A1 publication Critical patent/WO2024114011A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • 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
    • H01M50/50—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
    • 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
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
    • 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
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • 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 application relates to the field of battery technology, and in particular to a battery information collection component and a battery module.
  • CCS component Cell Contacting System component
  • the embodiments of the present application provide a battery information acquisition component and a battery module, which can reduce the assembly defect rate while improving the integration level of the battery information acquisition component, thereby improving the technical problems of complex assembly process and high production cost of the battery information acquisition component.
  • an embodiment of the present application provides a battery information acquisition component, which includes: a bracket; a bus, which is arranged on a side of the bracket facing a first direction and includes a plurality of welding parts; a collection piece, which includes at least one flexible circuit board; in the first direction, the flexible circuit board and the welding part are staggered.
  • At least a portion of the flexible circuit board is disposed on a side wall of the bracket, and the flexible circuit board is fixedly connected or detachably connected to the side wall.
  • the bracket includes: a bracket body, the bus is arranged on a side of the bracket body facing the first direction; a support plate is arranged on a side of the bracket body away from or facing the first direction and is located at an edge of the bracket body, and the positive projection of the flexible circuit board on the side wall of the bracket overlaps with at least part of the support plate.
  • the support plate is arranged on a side of the bracket body away from the first direction; the bracket also includes an assembly guide structure, which is arranged on a side of the bracket body away from the first direction and is fixedly connected to the bracket body and the support plate respectively.
  • the bracket body includes a plurality of first openings, and the first openings penetrate the bracket body along the first direction;
  • the bus includes a plurality of bus monomers, each of the bus monomers includes at least one welding portion, and the welding portion is correspondingly embedded in the first opening;
  • the collection member includes a plurality of voltage collection portions, and the voltage collection portions are arranged one by one corresponding to the bus monomers, and the voltage collection portion includes a first portion, a second portion and a bending portion, the first portion is electrically connected to the bus monomer, the second portion is electrically connected to the flexible circuit board arranged on the side wall, and the bending portion electrically connects the first portion and the second portion.
  • the collection component includes a plurality of temperature collection parts, the temperature collection parts include a temperature sensing component and a wiring harness, and the temperature sensing component is electrically connected to the flexible circuit board through the wiring harness;
  • the bracket includes a plurality of limiting parts, the limiting part is arranged on a side of the bracket body away from the first direction, and at least a portion of the wiring harness is embedded in the limiting part.
  • a colloid is provided between the limiting portion and the wiring harness.
  • the bracket body includes a plurality of second openings, the second openings penetrate the bracket body along the first direction, and the temperature sensing component is embedded in the second openings.
  • the temperature sensing component includes a shell, a water drop head temperature sensing element and adhesive backing, the shell and the adhesive backing are arranged to form a accommodating space, and the water drop head temperature sensing element is arranged in the accommodating space.
  • the temperature collecting unit further includes a limit frame, and the limit frame is arranged at the connection between the flexible circuit board and the wiring harness.
  • an embodiment of the present application provides a battery module, comprising a battery information acquisition component and a battery cell group as described in any of the above items, wherein the battery cell group comprises a plurality of battery cells, and the bracket and bus in the battery information acquisition component are stacked on the battery cell group in sequence along a first direction, the battery cell comprises a positive electrode and a negative electrode, and the welding portion in the bus is fixedly connected to the positive electrode or the negative electrode of the battery cell.
  • the bracket includes: a bracket body, the bus is arranged on a side of the bracket body facing the first direction; a support plate, arranged on a side of the bracket body away from the first direction and located at an edge of the bracket body; an assembly guide structure, arranged on a side of the bracket body away from the first direction and fixedly connected to the bracket body and the support plate respectively; the assembly guide structure is provided with a contoured surface matching at least a portion of the side wall of the battery cell.
  • the beneficial effects of the present application are as follows: the embodiments of the present application provide a battery information collection component and a battery module, the battery information collection component includes a bracket, a bus and a collection piece, the bus is arranged on the side of the bracket facing the first direction, and includes a plurality of welding parts; the collection piece includes at least one flexible circuit board, and in the first direction, the flexible circuit board and the welding part are staggered.
  • the flexible circuit board and the welding part are staggered in the first direction, there will be no interference between the flexible circuit board and the bus during the assembly process of the battery information collection component with the battery cell in the battery module, thereby enabling the bracket, the bus and the collection piece to form an integrated structure, reducing the difficulty of assembling the battery information collection component and saving the production cost.
  • FIG. 1 is a three-dimensional schematic diagram of a battery information collection component provided in an embodiment of the present application from one viewing angle.
  • FIG. 2 is a three-dimensional schematic diagram of a battery cell provided in an embodiment of the present application.
  • FIG3 is a three-dimensional schematic diagram of a battery information collection component provided in an embodiment of the present application from another perspective.
  • FIG. 4 is a partial enlarged view of region A in FIG. 3 provided in an embodiment of the present application.
  • FIG. 5 is a partial enlarged view of area B in FIG. 3 provided in an embodiment of the present application.
  • FIG. 6 is a partial enlarged view of region C in FIG. 1 provided in an embodiment of the present application.
  • Bracket 10 side wall 101; bracket body 11; first opening 111; second opening 112; support plate 12; assembly guide structure 13; limit part 14; bus 20; reinforcing rib 15; welding part 201; bus monomer 21; series row 211; series long row 212; input row 213; output row 214; collection piece 30; flexible circuit board 31; voltage collection part 32; first part 321; second part 322; bending part 323; temperature collection part 33; temperature sensing component 331; shell 3311; adhesive 3312; wiring harness 332; limit frame 333; battery cell 40; positive electrode 41; negative electrode 42; first direction Y;
  • the battery information collection component for voltage and temperature collection and monitoring, specifically including a bracket, a bus and a collection piece stacked in sequence, the bus including multiple welding parts, the collection piece including a flexible circuit board, and the flexible circuit board will cover part of the welding part. Since the battery information collection component needs to be assembled with the battery cell group later, specifically, the welding part in the bus is welded to each battery cell in the battery cell group, and when the welding part is welded to the battery cell, it is necessary to use welding tools to apply pressure to the welding part to ensure the welding quality.
  • the welding part covered by the flexible circuit board often has a problem of cold welding due to insufficient pressing force. At the same time, the flexible circuit board will be crushed by the welding tool, which greatly increases the assembly defect rate. In order to reduce the defect rate, the flexible circuit board can only be assembled after the assembly of the busbar and the battery cell group is completed, which makes the integration degree of the battery information collection component low, and further makes the assembly process of the battery information collection component more complicated, which greatly increases the production cost of the battery information collection component.
  • an embodiment of the present application provides a battery information collection component and a battery module.
  • FIG1 is a three-dimensional schematic diagram of a battery information collection component provided in an embodiment of the present application from a perspective.
  • FIG2 is a three-dimensional schematic diagram of a battery cell provided in an embodiment of the present application.
  • the battery information collection component provided in an embodiment of the present application includes: a bracket 10, a bus 20 and a collection piece 30.
  • the bus 20 is arranged on the side of the bracket 10 facing the first direction Y, and includes a plurality of welding portions 201; the collection piece 30 includes at least one flexible circuit board 31; in the first direction Y, the flexible circuit board 31 and the welding portion 201 are staggered.
  • the welding portion 201 is arranged on the side of the bracket 10 facing the first direction Y. Since the flexible circuit board 31 and the welding portion 201 are staggered in the first direction Y, when a welding tool is arranged on the side of the bus 20 facing the first direction Y, and the welding portion 201 is welded to the battery cell 40 arranged on the side of the bracket 10 away from the first direction Y, the welding tool can avoid the flexible circuit board 31 and tightly press the welding portion 201, thereby improving the product yield.
  • the bracket 10 does not affect the welding process between the welding portion 201 in the bus 20 and the battery cell 40, the bracket 10, the bus 20 and the flexible circuit board 31 can be assembled with the battery cell 40 after being integrated into one piece, thereby greatly improving the integration of the battery information collection component and reducing the assembly difficulty and production cost of the battery information collection component.
  • At least a portion of the flexible circuit board 31 is disposed on the side wall 101 of the bracket 10 , and the flexible circuit board 31 is fixedly connected or detachably connected to the side wall 101 .
  • the size of the flexible circuit board 31 in the battery information collection component is often large, and it needs to be electrically connected to each component with the information collection function.
  • the present application can fully utilize the space on the bracket 10 by setting at least part of the flexible circuit board 31 on the side wall 101 of the bracket 10, and integrate and fix the flexible circuit board 31 while ensuring that the flexible circuit board 31 and the welding part 201 are staggered in the first direction Y.
  • the flexible circuit board 31 disposed on the side wall 101 of the bracket 10 is electrically connected to each component having an information collection function in the collection member 30 .
  • a plurality of protrusions are provided on the side wall 101, and the flexible circuit board 31 provided on the side wall 101 of the bracket 10 is formed with positioning holes at positions corresponding to the protrusions, and the flexible circuit board 31 cooperates with the protrusions through the positioning holes, thereby realizing a detachable connection with the side wall 101.
  • the flexible circuit board 31 provided on the side wall 101 of the bracket 10 can also be detachably connected to the side wall 101 by means of threaded connection, or fixedly connected to the side wall 101 by means of colloid fixation or hot riveting fixation.
  • the bracket 10 includes: a bracket body 11 and a support plate 12.
  • the busbar 20 is arranged on a side of the bracket body 11 facing the first direction Y;
  • the support plate 12 is arranged on a side of the bracket body 11 away from or facing the first direction Y and is located at an edge of the bracket body 11, and the orthographic projection of the flexible circuit board 31 on the side wall 101 of the bracket 10 overlaps at least part of the support plate 12.
  • the bracket 10 also includes the support plate 12 disposed on the side of the bracket body 11 away from or toward the first direction Y, and the orthographic projection of the flexible circuit board 31 on the side wall 101 of the bracket 10 overlaps at least partially with the support plate 12, the side wall 101 of the bracket 10 can provide a wider installation space for the flexible circuit board 31, which is conducive to the support and fixation of the flexible circuit board 31 disposed on the side wall 101 of the bracket 10.
  • the setting of the support plate 12 can further provide support for the bracket body 11, avoiding the deformation problem of the bracket body 11 caused by the excessive extension length.
  • the support plate 12 extends along the length direction of the bracket body 11 , the bracket body 11 and the support plate 12 are integrally formed, and the bracket body 11 and the support plate 12 are made of the same material, for example, both are made of plastic.
  • the thickness of the support plate 12 is greater than or equal to 1.5 mm, such as 1.5 mm, 2 mm, 2.5 mm, 3 mm; the width of the support plate 12 is greater than or equal to 55 mm, such as 55 mm, 60 mm, 70 mm; the length of the support plate 12 is greater than or equal to the length of the flexible circuit board 31 arranged on the side wall 101 of the bracket 10.
  • FIG3 is a three-dimensional schematic diagram of a battery information collection assembly provided in an embodiment of the present application from another perspective;
  • FIG4 is a partial enlarged view of region A in FIG3 provided in an embodiment of the present application.
  • the support plate 12 is disposed on a side of the support body 11 away from the first direction Y;
  • the support 10 further includes an assembly guide structure 13, which is disposed on a side of the support body 11 away from the first direction Y and is fixedly connected to the support body 11 and the support plate 12, respectively.
  • the assembly guide structure 13 is arranged on the side of the bracket body 11 away from the first direction Y. Therefore, the assembly guide structure 13 and the support plate 12 are arranged in the same direction relative to the bracket body 11. In addition, since the assembly guide structure 13 is fixedly connected to the bracket body 11 and the support plate 12 respectively, the assembly guide structure 13 can further fix and support the bracket body 11 and the support plate 12, and further improve the support strength and anti-deformation ability of the bracket 10.
  • the assembly guide structure 13 corresponds to the position of the side wall 101 of the battery cell 40, and the assembly guide structure 13 is provided with a contoured surface matching at least part of the side wall of the battery cell 40, so that during the assembly process of the battery information collection component with the battery cell 40, the battery information collection component can only move along the axial direction of the battery cell 40, thereby improving the assembly efficiency of the battery information collection component with the battery cell 40.
  • the bracket 10 further includes a reinforcing rib 15, which is disposed on a side of the bracket body 11 away from the first direction Y and is respectively fixedly connected to the bracket body 11 and the support plate 12.
  • the reinforcing rib 15 is spaced apart from the assembly guide structure 13.
  • the reinforcing rib 15 is arranged on the side of the bracket body 11 away from the first direction Y, and is fixedly connected to the bracket body 11 and the support plate 12 respectively, it can further fix and support the bracket body 11 and the support plate 12, and further enhance the supporting strength and anti-deformation ability of the bracket 10.
  • FIG5 is a partial enlarged view of the B area in FIG3 provided by an embodiment of the present application.
  • the bracket body 11 includes a plurality of first openings 111, and the first openings 111 penetrate the bracket body 11 along the first direction Y;
  • the busbar 20 includes a plurality of busbar monomers 21, each of the busbar monomers 21 includes at least one welding portion 201, and the welding portion 201 is correspondingly embedded in the first opening 111;
  • the acquisition member 30 includes a plurality of voltage acquisition portions 32, and the voltage acquisition portions 32 are arranged one by one with the busbar monomers 21, and the voltage acquisition portion 32 includes a first portion 321, a second portion 322 and a bending portion 323, the first portion 321 is electrically connected to the busbar monomer 21, the second portion 322 is electrically connected to the flexible circuit board 31 arranged on the side wall 101, and the bending portion 323 electrically connects the first portion 321 and the second portion 322.
  • the welding portion 201 embedded in the first opening 111 in the busbar monomer 21 can pass through the first opening 111 to be electrically connected to the positive electrode 41 or the negative electrode 42 of the battery cell 40.
  • the busbar monomer 21 includes a series row 211, a series long row 212, an input row 213 and an output row 214.
  • the busbar 20 includes a plurality of series rows 211 arranged along the length direction of the bracket body 11, and a plurality of series rows 211 arranged along the width direction of the bracket body 11, each of the series rows includes four first connecting pieces arranged at intervals and connected to each other in the width direction of the bracket body 11, and each first connecting piece includes two welding portions 201, and the two welding portions 201 are respectively a negative electrode 42 welding portion 201 and a positive electrode 41 welding portion 201.
  • the busbar 20 further includes the series long row 212 disposed on one side of the series row 211, the series long row 212 includes eight second connection pieces spaced apart and connected to each other in the width direction of the bracket body 11, each of the second connection pieces includes a welding portion 201.
  • the busbar 20 further includes an input row 213 and an output row 214 disposed on the other side of the series row 211, the input row 213 includes four third connection pieces spaced apart and connected to each other in the width direction of the bracket body 11, each of the third connection pieces includes a welding portion 201; the output row 214 includes four fourth connection pieces spaced apart and connected to each other in the width direction of the bracket body 11, each of the fourth connection pieces includes a welding portion 201.
  • the voltage collection part 32 is a component with an information collection function, and the voltage collection part 32 is, for example, a nickel sheet.
  • the first part 321 of the voltage collection part 32 is electrically connected to the busbar monomer 21, and the second part 322 of the voltage collection part 32 is electrically connected to the flexible circuit board 31 disposed on the side wall 101. Since the busbar monomer 21 and the flexible circuit board 31 disposed on the side wall 101 are staggered in the first direction Y, in order to ensure that the voltage collection part 32 can smoothly transmit the voltage information on the busbar monomer 21 to the flexible circuit board 31 disposed on the side wall 101, the voltage collection part 32 also includes the bending part 323 electrically connecting the first part 321 and the second part 322.
  • the first part 321 is electrically connected to the busbar monomer 21 by laser welding, and the connection between the first part 321 and the busbar monomer 21 avoids the welding part 201; the second part 322 is electrically connected to the flexible circuit board 31 arranged on the side wall 101 by soldering.
  • Figure 6 is a partial enlarged view of the C area in Figure 1 provided by an embodiment of the present application.
  • the collection member 30 includes a plurality of temperature collection parts 33, and the temperature collection part 33 includes a temperature sensing component 331 and a wiring harness 332.
  • the temperature sensing component 331 is electrically connected to the flexible circuit board 31 arranged on the side wall 101 through the wiring harness 332;
  • the bracket 10 includes a plurality of limiting parts 14, and the limiting part 14 is arranged on the side of the bracket body 11 away from the first direction Y, and at least part of the wiring harness 332 is embedded in the limiting part 14.
  • the temperature acquisition unit 33 is another element having an information acquisition function.
  • the number of the temperature acquisition units 33 is less than the number of the voltage acquisition units 32.
  • the acquisition unit includes two flexible circuit boards 31, and each of the flexible circuit boards 31 is electrically connected to the two temperature acquisition units 33.
  • the bracket 10 includes a plurality of limiting portions 14 arranged on the side of the bracket body 11 away from the first direction Y, at least a portion of the wiring harness 332 can be embedded in the limiting portion 14, so that the wiring harness 332 can be stably fixed on the side of the bracket body 11 away from the first direction Y.
  • the inner wall of the limiting portion 14 contacts the wire harness 332 embedded in the limiting portion 14 , so that the wire harness 332 is fixed by using the inner wall of the limiting portion 14 .
  • a colloid (not shown in the figure) is provided between the limiting portion 14 and the wire harness 332 .
  • the bracket body 11 includes a plurality of second openings 112 , the second openings 112 penetrate the bracket body 11 along the first direction Y, and the temperature sensing component 331 is embedded in the second openings 112 .
  • the temperature sensing component 331 embedded in the second opening 112 can pass through the second opening 112 and contact the negative electrode 42 of the battery cell 40, thereby sensing the temperature of the battery cell 40 in real time.
  • the temperature sensing component 331 includes a shell 3311, a water drop head temperature sensing element and a back glue 3312, the shell 3311 and the back glue 3312 are arranged to form a accommodating space, the water drop head temperature sensing element is arranged in the accommodating space, and the back glue 3312 is fixedly connected to the negative electrode 42 of the battery cell 40.
  • the water drop head temperature sensing element when the water drop head temperature sensing element is in direct contact with the negative electrode 42 of the battery cell 40, it will be difficult to fix it because the contact surface of the water drop head temperature sensing element is uneven, and it may even fall off, seriously affecting the performance of the temperature sensing component 331.
  • the battery information acquisition component provided by the present application, since the shell 3311 and the back glue 3312 are surrounded to form a containing space, the water drop head temperature sensing element is arranged in the containing space, so that the direct contact between the water drop head temperature sensing element and the negative electrode 42 of the battery cell 40 can be effectively avoided.
  • the present application can greatly improve the connection stability between the temperature sensing component 331 and the negative electrode 42 of the battery cell 40 by fixing the back glue 3312 to the negative electrode 42 of the battery cell 40.
  • the contact surface between the back glue 3312 and the negative electrode 42 of the battery cell 40 is rectangular.
  • the temperature collecting unit 33 further includes a limit frame 333 , and the limit frame 333 is disposed at the connection between the flexible circuit board 31 and the wiring harness 332 .
  • the flexible circuit board 31 and the wiring harness 332 are fixed and electrically connected, for example, by welding. Since a limit frame 333 is provided at the connection between the flexible circuit board 31 and the wiring harness 332, the connection between the flexible circuit board 31 and the wiring harness 332 can be further fixed and protected by providing ultraviolet curing (UV) glue in the limit frame 333, and the limit frame 333 can limit the shape of the UV glue, so that the UV glue can achieve excellent fixing and sealing insulation effects, and further improve the connection stability between the flexible circuit board 31 and the wiring harness 332.
  • UV ultraviolet curing
  • the present application also provides a battery module, which includes a battery cell group and a battery information collection component as described in any of the above items, the battery cell group includes a plurality of battery cells 40, the bracket 10 and the bus 20 in the battery information collection component are stacked on the battery cell group in sequence along a first direction Y, the battery cell 40 includes a positive electrode 41 and a negative electrode 42, and the welding portion 201 in the bus 20 is fixedly connected to the positive electrode 41 or the negative electrode 42 of the battery cell 40.
  • the bracket 10 includes: a bracket body 11, the bus 20 is arranged on the side of the bracket body 11 facing the first direction Y; a support plate 12, arranged on the side of the bracket body 11 away from the first direction Y, and located at the edge of the bracket body 11; an assembly guide structure 13, arranged on the side of the bracket body 11 away from the first direction Y, and fixedly connected to the bracket body 11 and the support plate 12 respectively; the assembly guide structure 13 is provided with a contoured surface matching at least a portion of the side wall of the battery cell 40.
  • the assembly guide structure 13 enables the battery information acquisition component to move only along the axial direction of the battery cell 40, thereby improving the assembly efficiency of the battery information acquisition component and the battery cell 40.
  • the present application provides a battery information acquisition component and a battery module, wherein the battery information acquisition component includes a bracket, a bus and a acquisition piece, wherein the bus is arranged on a side of the bracket facing a first direction and includes a plurality of welding parts; the acquisition piece includes at least one flexible circuit board, wherein in the first direction, the flexible circuit board and the welding part are staggered.
  • the flexible circuit board and the welding part are staggered, during the assembly process of the battery information acquisition component with the battery cell in the battery module, no interference will be generated between the flexible circuit board and the bus, thereby enabling the bracket, the bus and the acquisition piece to form an integrated structure, thereby reducing the difficulty of assembling the battery information acquisition component and saving production costs.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

L'invention concerne un ensemble d'acquisition d'informations de batterie et un module de batterie. L'ensemble d'acquisition d'informations de batterie comprend un support, une barre omnibus et une unité d'acquisition. La barre omnibus comprend une pluralité de parties de soudage ; l'unité d'acquisition comprend une carte électronique flexible ; la carte électronique flexible et les parties de soudage sont agencées dans un mode décalé, de telle sorte qu'aucune interférence n'est générée entre la carte électronique flexible et la barre omnibus lors d'un processus d'assemblage, formant ainsi une structure intégrée par le support, la barre omnibus et l'unité d'acquisition. La difficulté d'assemblage de l'ensemble d'acquisition d'informations de batterie est réduite, et le coût est économisé.
PCT/CN2023/116758 2022-12-02 2023-09-04 Ensemble d'acquisition d'informations de batterie et module de batterie WO2024114011A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211543457.8A CN115775955A (zh) 2022-12-02 2022-12-02 电池信息采集组件及电池模组
CN202211543457.8 2022-12-02

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WO2024114011A1 true WO2024114011A1 (fr) 2024-06-06

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WO (1) WO2024114011A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115775955A (zh) * 2022-12-02 2023-03-10 湖北亿纬动力有限公司 电池信息采集组件及电池模组
CN219739219U (zh) * 2023-03-16 2023-09-22 惠州亿纬锂能股份有限公司 Ccs组件及圆柱动力电池模组
WO2024198045A1 (fr) * 2023-03-27 2024-10-03 惠州亿纬锂能股份有限公司 Module de batterie

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