WO2021078067A1 - 连接组件、电池模块、电池组以及使用电池模块作为电源的设备 - Google Patents

连接组件、电池模块、电池组以及使用电池模块作为电源的设备 Download PDF

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Publication number
WO2021078067A1
WO2021078067A1 PCT/CN2020/121315 CN2020121315W WO2021078067A1 WO 2021078067 A1 WO2021078067 A1 WO 2021078067A1 CN 2020121315 W CN2020121315 W CN 2020121315W WO 2021078067 A1 WO2021078067 A1 WO 2021078067A1
Authority
WO
WIPO (PCT)
Prior art keywords
hole
insulating film
adjusting portion
battery module
battery
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2020/121315
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
许文才
王旭光
钱木
姚己华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology 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 Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to EP20878110.4A priority Critical patent/EP3930091B1/en
Priority to KR1020227013435A priority patent/KR102593088B1/ko
Priority to JP2022523699A priority patent/JP7383139B2/ja
Publication of WO2021078067A1 publication Critical patent/WO2021078067A1/zh
Priority to US17/565,887 priority patent/US11843129B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • 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
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
    • 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

  • This application relates to the field of battery technology, and in particular to a connection assembly, battery module, battery pack, and equipment using the battery module as a power source.
  • An insulating film is laid on one side of the connecting sheet of the battery module.
  • the insulating film may be torn under the action of the expansion force, causing the connecting sheet to be exposed. There is a risk of short circuit.
  • the purpose of this application is to provide a connection assembly, battery module, battery pack, and equipment using the battery module as a power source, so as to improve the safety of the battery module.
  • the first aspect of the present application provides a connecting assembly for a battery module, comprising: a plurality of connecting pieces, the connecting pieces include an adjusting portion and a connecting portion, the adjusting portion is configured to be connected to a protrusion between adjacent connecting portions, and the connecting piece
  • the part is used to connect the battery cells of the battery module; and the insulating film is arranged on one side of the plurality of connecting pieces, and the insulating film is provided with through holes corresponding to the adjustment part.
  • the through hole includes a first through hole, the first through hole is located at the adjusting portion, and the first through hole is used to accommodate the adjusting portion.
  • the projected area of the first through hole on the plane where the connecting portion is located is larger than the projected area of the adjustment portion on the plane where the connecting portion is located.
  • the through hole includes a second through hole, the second through hole is located at the adjusting portion, and the second through hole includes a protruding portion disposed in close contact with the adjusting portion.
  • the protruding portion is connected to the inner side of the hole wall of the second through hole and extends toward the adjusting portion.
  • the protruding portion is connected to the inner side of the hole wall in the length direction of the second through hole.
  • the protrusion has a tongue-shaped structure or a square structure.
  • the width of the second through hole is greater than or equal to the width of the adjusting portion.
  • the through hole includes a third through hole, the third through hole is located at the connecting portion, and the third through hole is disposed close to the adjusting portion.
  • the third through holes are symmetrically distributed on both sides of the adjusting part.
  • the insulating film includes a first insulating film and a second insulating film respectively provided on both sides of the plurality of connecting pieces, and both the first insulating film and the second insulating film are provided with through holes.
  • one of the first insulating film and the second insulating film is provided with a first through hole, and the other insulating film is provided with a second through hole or a third through hole;
  • the first through hole is used for accommodating the adjusting part;
  • the second through hole is located at the adjusting part, and the second through hole includes a protruding part that is arranged in close contact with the adjusting part;
  • the third through hole is located at the connecting part, and the second through hole is located at the connecting part.
  • the three-way hole is arranged close to the adjusting part.
  • connection component further includes a sampling component, the sampling component is connected to a plurality of connecting pieces, and the sampling component and the plurality of connecting pieces are connected to form an integral structure through an insulating film.
  • a second aspect of the present application provides a battery module, which includes a plurality of battery cells arranged in a stack and the connecting assembly provided in the first aspect of the present application, and the plurality of connecting pieces are connected to electrode leads of the plurality of battery cells.
  • a third aspect of the present application provides a battery pack, including a box and the battery module provided in the second aspect of the present application, and the battery module is accommodated in the box.
  • the fourth aspect of the present application provides a device that uses a battery module as a power source, including a driving device and the battery module provided in the second aspect of the present application.
  • the driving device is used to provide driving force for the device, and the battery module is configured to provide power to the driving device. .
  • the connecting assembly includes a plurality of connecting pieces and insulating films, the connecting pieces include an adjusting portion and a connecting portion, the adjusting portion is configured to be connected to a protrusion between adjacent connecting portions, and the connecting portion is used for connecting
  • the insulating film is arranged on one side of the plurality of connecting pieces, and the insulating film is provided with through holes corresponding to the regulating part.
  • the connecting piece and the insulating film are integrally formed, because the adjustment part is set as a protrusion, the provision of through holes can improve the ductility of the insulating film at the protrusions, avoiding problems such as wrinkles and tearing of the insulating film due to the protrusions, and can improve the connection Manufacturing efficiency of components.
  • the connecting assembly is applied to the battery module, the battery cell expands and moves during the charging and discharging process, and the adjustment part deforms with the movement of the battery cell.
  • the through hole opened on the insulating film can release the expansion force to prevent the insulating film from being damaged. Tear, reduce the risk of short circuit between the exposed connecting piece and other parts, and improve the safety performance of the connecting assembly and the battery module.
  • FIG. 1 is a schematic diagram of the structure of a vehicle according to an embodiment of the application.
  • FIG. 2 is a schematic diagram of the structure of the battery pack in FIG. 1;
  • FIG. 3 is a schematic diagram of the structure of the battery module in FIG. 2;
  • FIG. 4 is a schematic diagram of the three-dimensional structure of the connecting component in FIG. 3;
  • Fig. 5 is a schematic diagram of an exploded structure of the connecting assembly shown in Fig. 4;
  • FIG. 6 is a schematic diagram of the structure of the connecting piece in FIG. 5;
  • FIG. 7 is a schematic structural diagram of a connecting piece according to another embodiment of the application.
  • Fig. 8 is a schematic bottom view of the structure of the connection assembly shown in Fig. 4;
  • FIG. 9 is a schematic diagram of an enlarged structure of part F in FIG. 8;
  • FIG. 10 is a schematic top view of the structure of the connecting assembly shown in FIG. 4;
  • FIG. 11 is a schematic diagram of an enlarged structure of part B in FIG. 10;
  • Figure 12 is a schematic view of the D-D cross-sectional structure of Figure 10;
  • FIG. 13 is a schematic diagram of an enlarged structure of part A in FIG. 10;
  • Figure 14 is a G-G sectional structure diagram in Figure 10.
  • 15 is a schematic diagram of an enlarged structure of part C in FIG. 10;
  • Figure 16 is a schematic cross-sectional view of E-E in Figure 10.
  • X1 the length direction of the battery module
  • Y1 the width direction of the battery module
  • Z1 the height direction of the battery module
  • spatially relative terms can be used here, such as “above”, “above”, “above the surface”, “above”, etc., to describe as shown in the figure Shows the spatial positional relationship between one device or feature and other devices or features. It should be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device described in the figure. For example, if the device in the drawing is turned upside down, then a device described as “above other devices or structures” or “above other devices or structures” will then be positioned as “below the other devices or structures” or “on Under other devices or structures”. Thus, the exemplary term “above” can include both orientations “above” and “below”. The device can also be positioned in other different ways (rotated by 90 degrees or in other orientations), and the relative description of the space used here will be explained accordingly.
  • the embodiment of the present application provides a device that uses the battery module 10 as a power source, the battery pack 100, the battery module 10, and the connection assembly 1.
  • the device using the battery module 10 as a power source includes a battery module 10 and a driving device for providing driving force for the device, and the battery module 10 provides electric power to the driving device.
  • the driving force of the equipment can be all electric energy, partly electric energy, and partly other energy sources (such as mechanical energy).
  • the device may also include a power source that provides mechanical energy such as an engine. Any device that uses the battery module 10 as a power source is within the protection scope of the present application.
  • the devices in the embodiments of the present application may be mobile devices such as vehicles, ships, and small airplanes.
  • the vehicle in the embodiment of the present application may be a new energy vehicle.
  • the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle.
  • the vehicle includes a battery pack 100 and a vehicle main body 200.
  • the battery pack 100 is disposed in the vehicle main body 200 and includes at least one battery module 10.
  • the vehicle body 200 is provided with a drive motor, which is electrically connected to the battery pack 100.
  • the battery pack 100 provides electrical energy for the drive motor.
  • the drive motor is connected to wheels on the vehicle body 200 through a transmission mechanism to drive the vehicle.
  • the battery pack 100 may be horizontally arranged at the bottom of the vehicle body 200.
  • the battery pack 100 of the embodiment of the present application includes at least one battery module 10.
  • the battery pack 100 of this embodiment includes a plurality of battery modules 10 and a box for accommodating the plurality of battery modules 10.
  • the box has an accommodating cavity, and a plurality of battery modules 10 are arranged in the accommodating cavity.
  • the box of this embodiment is a box-shaped box and includes a lower box 30 for accommodating the battery module 10 and an upper box 20 that is closed with the lower box 30.
  • the box may also have other shapes such as a frame-shaped box, a disk-shaped box, or the like.
  • the battery module 10 of the embodiment of the present application includes a plurality of battery cells 4 and a frame structure for fixing the plurality of battery cells 4.
  • a plurality of battery cells 4 are stacked and arranged in a row along the length direction X1 of the battery module 10.
  • the frame structure includes an end plate 2, a first tie 5 and a second tie 6.
  • the end plates 2 are located at both ends of the battery module 10 in the length direction X1, and the end plates 2 are used to restrict the battery cells 4 along the battery module 10. Movement in the length direction X1.
  • the first strap 5 and the second strap 6 are used to connect a plurality of stacked battery cells 4.
  • the frame structure may further include side plates located on both sides in the width direction Y1 of the battery module 10, and the side plates are connected with the end plates and enclosed to form a frame structure.
  • the battery module 10 may not be provided with a frame structure.
  • the battery module 10 of this embodiment further includes an insulating cover 3 which is arranged between the frame structure and the battery cells 4 to provide insulation. Specifically, in this embodiment, the insulating cover 3 is located between the end plate 2 and the battery cell 4 and the cable tie and the battery cell 4.
  • the battery cell 4 of this embodiment includes an electrode lead. Specifically, each battery cell 4 includes a positive electrode lead 41 and a negative electrode lead 42. In the battery module 10, a plurality of battery cells 4 are electrically connected by connecting pieces 11. The multiple battery cells 4 can be connected in series and/or in parallel through the connecting piece 11. For example, when the battery cells 4 are connected in series, the positive electrode lead 41 of one battery cell 4 and the other battery cell 4 are connected in series. The negative electrode lead 42 of the battery cell 4 is connected through the connecting piece 11; or, when the battery cells 4 are connected in parallel, the positive electrode lead 41 of one battery cell 4 and the positive electrode lead 41 of the other battery cell 4 are connected through the connecting piece 11.
  • the connecting piece 11 of this embodiment includes an adjusting portion 111 and a connecting portion 112. Specifically, the two connecting portions 112 are arranged at intervals in the length direction X3 of the connecting piece 11, and the adjusting portion 111 is arranged at the two connecting portions. Between the portions 112, the connecting portion 112 is used to connect with the electrode lead of the battery cell 4. Specifically, the connecting portion 112 is provided with a positioning hole 112a for mounting and positioning with the electrode lead.
  • the adjusting part 111 is configured to be connected to the protrusion 111 a between the adjacent connecting parts 112.
  • the connecting piece 11 of this embodiment is not limited to the case where two connecting portions 112 are provided, and the connecting portion 112 may be three or more than three. For example, when there are three connecting portions 112, there are two adjusting portions 111. Each adjusting part 111 is located between two adjacent connecting parts 112.
  • the adjusting portion 111 of this embodiment includes a protrusion 111 a disposed between two adjacent connecting portions 112, and the protrusion 111 a extends in the width direction Y3 of the connecting piece 11.
  • the length of the adjusting portion 111 of this embodiment is p 0 (length p 0 refers to the extension of the adjusting portion 111 in the width direction Y3 of the connecting piece 11), and the width is q 0 (width q 0 It refers to the extension size of the adjusting portion 111 in the length direction X3 of the connecting piece 11).
  • the protrusion 111a of the adjusting portion 111 of this embodiment protrudes toward the battery cell 4, so that the gap between the connecting piece 11 and the battery cell 4 can be used, so that the adjusting portion 111 does not take up extra space. , Thereby reducing the volume of the entire battery module 10.
  • the cross-section of the protrusion 111a of this embodiment is preferably arc-shaped.
  • the adjusting portion 111 may also include two or more protrusions 111a continuously arranged in the length direction X3 of the connecting piece 11.
  • the adjusting portion 111 includes three protrusions 111 a continuously arranged in the length direction X3 of the connecting piece 11.
  • the connecting assembly 1 of this embodiment includes a plurality of connecting pieces 11 and insulating films.
  • the insulating film is provided on one side of the plurality of connecting pieces 11 and connected to the plurality of connecting pieces 11, thereby connecting the plurality of connecting pieces 11 into one body.
  • the multiple connecting pieces 11 of this embodiment are connected as a whole through an insulating film so that the connecting assembly 1 becomes an integral structure, which facilitates the grouping of the battery modules 10, thereby improving production efficiency.
  • injection molding, bonding, hot pressing and other techniques can be used to form the connecting assembly 1 in one piece.
  • the multiple connecting pieces 11 of the connection assembly 1 of this embodiment are integrated into one body through the insulating film using hot pressing technology.
  • the insulating film of the present embodiment has a back glue inside, and the insulating film with back glue and the connecting sheet 11 are placed on a clamp and hot pressed to integrate into an integrated structure.
  • the connection assembly 1 of this embodiment further includes a sampling assembly 14.
  • the sampling assembly 14 is connected to a plurality of connecting sheets 11, and the sampling assembly 14 and the plurality of connecting sheets 11 are connected to form an integrated structure through an insulating film.
  • the sampling assembly 14 and the plurality of connecting pieces 11 are connected as a whole through an insulating film, so that the entire connecting assembly 1 becomes an integrated structure, which further simplifies the grouping process of the battery modules 10, thereby improving production efficiency.
  • injection molding, bonding, hot pressing and other techniques can be used to form the connecting assembly 1 in one piece.
  • the sampling component 14 of this embodiment includes a circuit board 141 and a sampling terminal 142.
  • the sampling terminal 142 is connected to the connecting piece 11 to sample the voltage and temperature of the battery cell 4 and transmit the data to the circuit board 141.
  • the circuit board 141 may be an FPC or a PCB, etc.; the sampling terminal 142 may be a nickel sheet, a copper sheet, an aluminum sheet, etc. connected to a sampling line in the circuit board 141, and the sampling terminal 142 may also be a sampling terminal in the circuit board 141. The part of the line that extends out. There are no specific restrictions here, as long as the information of the battery cell 4 can be collected.
  • the circuit board 141 is a flexible circuit board.
  • the sampling terminal 142 is a nickel sheet.
  • the length direction of the circuit board 141 of this embodiment is consistent with the length direction X2 of the connecting assembly 1, and the connecting assembly 1 of this embodiment includes two circuit boards distributed in the width direction Y2 of the connecting assembly 1. 141.
  • the length direction of the circuit board 141 may also be inconsistent with the length direction X2 of the connecting assembly 1.
  • the arrangement direction of the circuit board 141 can be adjusted according to the stacking manner of the battery cells 4.
  • the insulating film is provided with a through hole H corresponding to the adjustment portion 111.
  • a through hole H is opened on the insulating film, and the through hole H corresponds to the position of the adjusting portion 111.
  • the adjusting portion 111 deforms with the movement of the battery cell 4, and the through hole H opened in the insulating film can release the expansion. This force prevents the insulating film from being torn, reduces the risk of short circuit between the exposed connecting sheet 11 and other components, and improves the safety performance of the connecting assembly 1 and the battery module 10.
  • the "corresponding arrangement" of the through hole H opened on the insulating film of the present embodiment and the adjusting part 111 means that the through hole H is provided at the adjusting part 111, or the through hole H is arranged close to the adjusting part 111 and is arranged ⁇ 112 ⁇ At the junction 112.
  • a plurality of through holes H corresponding to the plurality of protrusions 111a of the adjusting portion 111 may be provided on the insulating film for the connecting piece 11, or may be provided corresponding to the adjusting portion 111. Of a through hole H.
  • the through hole H includes a first through hole H1, and the first through hole H1 is located at the adjusting portion 111 and used for accommodating the adjusting portion 111.
  • the insulating film is provided with a first through hole H1, and the first through hole H1 is used to accommodate the adjusting portion 111.
  • the size of the first through hole H1 can accommodate the adjusting part 111, so the adjusting part 111 has an elongated space when deformed.
  • the adjusting part 111 can be placed in the first through hole H1.
  • the hole H1 is free to deform, so as to prevent the insulating film from being torn due to the expansion force.
  • the adjusting portion 111 may be fully accommodated in the first through hole H1, or may be partially accommodated in the first through hole H1.
  • the projection area of the first through hole H1 on the plane where the connecting portion 112 is located is larger than the projection area of the adjusting portion 111 on the plane where the connecting portion 112 is located, so that all of the adjusting portion 111 is accommodated in the first through hole H1.
  • the first through hole H1 of this embodiment is a square hole.
  • the length of the first through hole H1 is p 1
  • the width of the first through hole H1 is q 1
  • the length p 1 of the first through hole H1 is greater than the length p 0 of the adjusting portion 111
  • the width of the first through hole H1 is q 1 is greater than the width q 0 of the adjustment portion 111.
  • the four corners of the first through hole H1 in this embodiment are all rounded.
  • the length p 1 of the first through hole H1 is greater than the length p 0 of the adjusting portion 111, the metal particles are likely to fall into the battery cell 4 through the first through hole H1, which may cause short circuit and other problems.
  • the length p 1 of the first through hole H1 can be set to be slightly larger than the length p 0 of the adjusting portion 111, such as 1 millimeter (mm), in which case most metal particles can be prevented from entering the battery module 10.
  • this requires the equipment for manufacturing the connection assembly 1 to have high precision, and the distance between the first through hole H1 and the adjustment portion 111 is precisely controlled to block metal particles.
  • the length p 1 of the first through hole H1 is also possible to set to be smaller than the length p 0 of the adjusting portion 111 to ensure that there is no gap between the insulating film and the edge of the adjusting portion 111 of the connecting sheet 11 to prevent metal particles from falling.
  • the adjusting portion 111 is partially accommodated in the first through hole H1. This reduces the free elongation space of the regulating part 111, and because the insulating film has limited ductility during hot pressing, the connection strength between the insulating film after hot pressing and the regulating part 111 is low, which can vary with battery cells.
  • the insulating film connected to the adjusting part 111 may be torn.
  • the through hole H includes a second through hole H2, the second through hole H2 is located at the adjusting portion 111, and the second through hole H2 includes a second through hole H2 that is disposed in close contact with the adjusting portion 111.
  • the protrusion T covers the gap a between the second through hole H2 and the adjustment portion 111.
  • the protruding portion T is arranged in close contact with the adjusting portion 111 to better ensure that the insulating film can be well attached to the adjusting portion 111, and the protruding portion T covers the gap a between the second through hole H1 and the adjusting portion 111 , In order to better prevent metal particles from falling into the battery cell 4 through the gap between the insulating film and the regulating portion 111.
  • the protruding portion T of this embodiment is connected to the inner side of the hole wall of the second through hole H2 and extends toward the adjustment portion 111, and is attached to the adjustment portion 111 to cover the second through hole H2 and The gap a between the adjustment parts 111.
  • the protrusion T is located inside the hole wall of the second through hole H2 in the longitudinal direction X4.
  • the protrusion T may also be provided on the inner side of the hole wall of the second through hole H2 in the width direction Y4.
  • the protrusion T has a square structure.
  • the protrusion T is preferably a tongue-shaped structure.
  • the edges on both sides of the tongue-shaped structure gradually approach the middle of the second through hole H2 so as to facilitate the adhesion between the protrusion T and the protrusion 111a.
  • the length p 2 of the second through hole H2 is smaller than the length p 0 of the adjusting portion 111, so as to ensure that there is no gap between the insulating film and the edge of the adjusting portion 111 of the connecting sheet 11 to prevent metal particles from falling.
  • the width q 2 of the second through hole H2 in this embodiment is greater than, equal to, or slightly smaller than the width q 0 of the adjusting portion 111 for releasing the expansion force. In some embodiments, in order to reduce the difficulty of positioning and facilitate hot press manufacturing, the width q 2 of the second through hole H2 is greater than the width q 0 of the adjustment portion 111.
  • the edges of the second through hole H2 in this embodiment adopt a circular arc to slowly transition.
  • the through hole H may also be a third through hole H3, the third through hole H3 is located at the connecting portion 112, and the third through hole H3 is disposed close to the adjusting portion 111.
  • the third through hole H3 is located on one side of the adjusting portion 111 in the length direction X3 of the connecting piece 11 to avoid the adjusting portion 111 so as to prevent metal particles from falling into the battery module 10.
  • the insulating film of this embodiment is provided with two third through holes H3 respectively located on both sides of the adjusting portion 111 in the length direction X3 of the connecting piece 11.
  • the two third through holes H3 arranged opposite to the two sides of the adjusting portion 111 are more conducive to the release of the expansion force.
  • the two third through holes H3 are symmetrically arranged.
  • third through holes H3 may be provided, and multiple third through holes H3 can further improve the flexibility of the connection assembly 1 and reduce the risk of the insulating film being torn.
  • the provision of too many third through holes H3 will reduce the hot pressing area of the insulating film and increase the complexity of the mold. Therefore, the number of third through holes H3 can be appropriately adjusted according to actual conditions.
  • the third through hole H3 of this embodiment is a square hole.
  • the length p 3 of the third through hole H3 is less than or equal to the width of the connecting portion 112 (the extension size of the connecting portion 112 in the width direction Y3 of the connecting piece 11). Since the third through hole H3 is covered by the connecting portion 112, metal particles can be prevented from falling into the battery module 10; or the length p 3 of the third through hole H3 is slightly larger than the width of the connecting portion 112, such as 1 mm, which can prevent most metal particles Fall in.
  • the width of the connecting portion 112 is the same as the length of the adjusting portion 111, and both are p 0 .
  • the width q 3 of the third through hole H3 is greater than or equal to 0.5 mm. At this time, the manufacturability of the mold and the effect of releasing the expansion force are better. If the width is too small, the life and manufacturability of the mold will be affected.
  • the distance b ⁇ 0 between the hole wall of the third through hole H3 on the side close to the adjusting portion 111 and the edge of the adjusting portion in this embodiment is the distance b ⁇ 0 between the hole wall of the third through hole H3 on the side close to the adjusting portion 111 and the edge of the adjusting portion in this embodiment.
  • the four corners of the third through hole H3 in this embodiment are all rounded to prevent stress concentration.
  • the first through hole H1 or the second through hole H2 or the third through hole H3 may be provided on the insulating film.
  • the first through hole H1, the second through hole H2, and the third through hole H3 can also be provided on the insulating film at the same time.
  • the insulating film of this embodiment includes a first insulating film 12 and a second insulating film 13 respectively provided on both sides of the plurality of connecting pieces 11 and the sampling assembly 14. That is, the plurality of connecting pieces 11 and the sampling assembly 14 are located between the first insulating film 12 and the second insulating film 13. Specifically, the first insulating film 12, the sampling assembly 14, the plurality of connecting pieces 11, and the second insulating film 13 of this embodiment are integrated into one body by hot pressing.
  • the first insulating film of this embodiment 12 and the second insulating film 13 are both provided with through holes H, which can improve the flexibility of the connection assembly 1 and prevent the insulating film of the connection assembly 1 from being torn during the manufacturing and use process. Specifically, as shown in FIG.
  • the first insulating film 12 is provided on the upper side of the connecting piece 11 and the sampling assembly 14, and the second insulating film 13 is provided on the lower side of the connecting piece 11 and the sampling assembly 14, that is, the present
  • the first insulating film 12, the connecting piece 11, the sampling assembly, and the second insulating film 13 of the embodiment are sequentially arranged in the height direction Z2 of the connecting assembly 1.
  • a second through hole H2 is provided on the first insulating film 12 and a first through hole H1 is provided on the second insulating film 13.
  • the first through hole H1 is located at the adjusting portion 111, and the first through hole H1 is used to accommodate the adjusting portion 11.
  • the second through hole H2 is located at the adjusting portion 111, and the inner side of the hole wall of the second through hole H2 is connected with a protruding portion T, which extends toward the adjusting portion 111 and is connected to the adjusting portion 111.
  • 111 is attached to cover the gap a between the second through hole H2 and the adjusting portion 111.
  • the first through hole H1 is located at the adjusting portion 111, and the first through hole H1 of this embodiment is a square hole.
  • the length p 1 of the first through hole H1 is greater than the length p 0 of the adjusting portion 111, and the width q 1 of the first through hole H1 is greater than the width q 0 of the adjusting portion 111 so that the adjusting portion 111 is received in the first through hole H1. Since the length p 1 of the first through hole H1 is greater than the length p 0 of the adjusting portion 111, the metal particles are likely to fall into the battery cell 4 through the first through hole H1, which may cause short circuit and other problems.
  • a second through hole H2 is provided on the first insulating film 12, the second through hole H2 is located at the adjusting portion 111, and the second through hole H2 includes a protruding portion T disposed in close contact with the adjusting portion 111. As shown in FIGS. 11 and 13, the second through hole H2 is located at the adjusting portion 111, and the length p 2 of the second through hole H2 is smaller than the length p 0 of the adjusting portion 111, preventing metal particles from passing through the adjusting portion 111 and the first through hole. The gap between H1 falls into the battery module 10.
  • the inner side of the hole wall of the second through hole H2 of this embodiment is connected with a protruding portion T, the protruding portion T extends toward the adjusting portion 111 and is attached to the adjusting portion 111 to cover the second through hole H2 and the adjusting portion 111
  • the gap a therebetween improves the bonding strength between the insulating film and the adjustment portion 111, and prevents metal particles from falling into the battery module 10 through the gap a between the second through hole H2 and the adjustment portion 111.
  • the first insulating film 12 is provided with a third through hole H3, and the second insulating film 13 is provided with a first through hole H1.
  • the first through hole H1 is located at the adjusting portion 111, and the first through hole H1 is used to accommodate the adjusting portion 11.
  • the third through hole H3 is located at the connecting portion 112, and the third through hole H3 is located close to the adjusting portion 111.
  • the third through hole H3 is located on the side of the adjusting portion 111 in the length direction X3 of the connecting piece 11 to avoid the adjusting portion 111, thereby preventing metal particles from falling into the battery module 10.
  • a first through hole H1 is provided on the second insulating film 13, the first through hole H1 is located at the adjusting portion 111, and the first through hole H1 is used for accommodating the adjusting portion 11.
  • the first through hole H1 of this embodiment is a square hole.
  • the length p 1 of the first through hole H1 is greater than the length p 0 of the adjusting portion 111
  • the width q 1 of the first through hole H1 is greater than the width q 0 of the adjusting portion 111, so that the adjusting portion 111 is accommodated in the first through hole H1 . Since the length p 1 of the first through hole H1 is greater than the length p 0 of the adjusting portion 111, the metal particles are likely to fall into the battery cell 4 through the first through hole H1, which may cause short circuit and other problems.
  • a third through hole H3 is provided on the first insulating film 12, the third through hole H3 is located at the connection portion 112, and the third through hole H3 is arranged close to the adjustment portion 111, which improves the flexibility of the connection assembly 1 while reducing There is a risk of metal particles falling onto the battery cell 4.
  • the first insulating film 12 of the present embodiment is provided with two third through holes H3, and the two third through holes H3 are respectively located on the adjusting portion 111 in the length direction X3 of the connecting piece 11. On both sides.
  • the third through hole H3 of this embodiment is a square hole.
  • the third through hole H3 on the first insulating film 12 and the second through hole H3 on the second insulating film 13 are required.
  • the distance between the walls of a through hole H1 that are close to each other is c ⁇ -1mm, when c is between [-1mm, 0mm], that is to say, between the first insulating film 12 and the second insulating film 13 there is 0 to A gap of 1mm size can still prevent most of the metal particles from entering at this time; for example, c ⁇ 0.
  • the through hole H on the first insulating film 12 may be the second through hole H2 or the third through hole H3. Specifically, in this embodiment, both the second through hole H2 and the third through hole H3 are opened on the first insulating film 12.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
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  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
PCT/CN2020/121315 2019-10-21 2020-10-15 连接组件、电池模块、电池组以及使用电池模块作为电源的设备 Ceased WO2021078067A1 (zh)

Priority Applications (4)

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EP20878110.4A EP3930091B1 (en) 2019-10-21 2020-10-15 Connection assembly, battery module, battery pack, and device using battery module as power source
KR1020227013435A KR102593088B1 (ko) 2019-10-21 2020-10-15 연결 어셈블리, 배터리 모듈, 배터리 팩 및 배터리 모듈을 전원으로 사용하는 장치
JP2022523699A JP7383139B2 (ja) 2019-10-21 2020-10-15 接続ユニット、電池モジュール、電池パック、及び電池モジュールを電源として使用するデバイス
US17/565,887 US11843129B2 (en) 2019-10-21 2021-12-30 Connecting assembly, battery module, battery pack, and device using battery module as power supply

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CN201910999598.2A CN112310560B (zh) 2019-10-21 2019-10-21 连接组件、电池模块、电池组以及使用电池模块作为电源的设备

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023124825A (ja) * 2022-02-25 2023-09-06 モレックス エルエルシー バッテリ接続モジュール

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112310520B (zh) * 2019-10-21 2025-01-21 宁德时代新能源科技股份有限公司 连接组件、电池模块、电池组和电池单体作为电源的装置
CN113921998B (zh) * 2021-10-15 2024-02-06 东莞市硅翔绝缘材料有限公司 一种具有热铆结构的集成母排及其制备工艺
CN115000600A (zh) * 2022-06-28 2022-09-02 一汽奔腾轿车有限公司 一种基于方形电芯的电池大模组的设计方法及电池模组
CN218939947U (zh) * 2022-11-21 2023-04-28 宁德时代新能源科技股份有限公司 电池及用电设备
CN222868266U (zh) * 2024-03-29 2025-05-13 北京车和家汽车科技有限公司 连接排、电池包以及车辆

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013196932A (ja) * 2012-03-21 2013-09-30 Toshiba Corp 二次電池装置
CN109103405A (zh) * 2018-08-19 2018-12-28 江西赣锋电池科技有限公司 一种电池包母排、制备方法及电池包
CN208767383U (zh) * 2018-11-01 2019-04-19 华霆（合肥）动力技术有限公司 一种连接结构及电源设备
CN109830640A (zh) * 2019-01-29 2019-05-31 广州安费诺诚信软性电路有限公司 一种动力电池汇流排的组合结构及制造方法
CN210744018U (zh) * 2019-10-21 2020-06-12 宁德时代新能源科技股份有限公司 连接组件、电池模块、电池组和装置
CN210744068U (zh) * 2019-10-21 2020-06-12 宁德时代新能源科技股份有限公司 连接组件、电池模块、电池组和装置
CN210743992U (zh) * 2019-10-21 2020-06-12 宁德时代新能源科技股份有限公司 电池模块、电池组及使用电池单体作为电源的装置

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010097722A (ja) * 2008-10-14 2010-04-30 Toshiba Corp 電池モジュール
CN102544616B (zh) * 2010-12-08 2014-07-30 比亚迪股份有限公司 一种电池模组
DE102011105040A1 (de) * 2011-05-06 2012-11-08 Klaus Ebert Lithiumsenkundärzellenanordnung
DE102012219783B4 (de) 2012-10-29 2023-11-09 Lisa Dräxlmaier GmbH Batteriemodul mit vielfältigen Montagevarianten und Querung
JP6359362B2 (ja) * 2014-07-07 2018-07-18 株式会社東芝 電池モジュール
JP6299537B2 (ja) * 2014-09-04 2018-03-28 株式会社Ｇｓユアサ 蓄電装置
CN204303895U (zh) 2014-11-19 2015-04-29 宁德时代新能源科技有限公司 一种锂离子电池组的采样结构
DE102014118188A1 (de) 2014-12-09 2016-06-09 Elringklinger Ag Zellkontaktierungssystem für eine elektrochemische Vorrichtung
JP6401656B2 (ja) * 2015-04-21 2018-10-10 株式会社オートネットワーク技術研究所 配線部材
CN106169549B (zh) 2016-09-27 2019-07-02 中航锂电（洛阳）有限公司 一种电池模块
CN110178244B (zh) * 2016-12-29 2023-01-03 罗密欧系统公司 用于电池结构、互连、感测和平衡的系统和方法
EP3563099A4 (en) * 2017-01-02 2021-03-10 Black & Decker Inc. ELECTRICAL COMPONENTS FOR REDUCING EFFECTS DUE TO LIQUID EXPOSURE AND VOLTAGE BIAS
WO2018165268A1 (en) 2017-03-09 2018-09-13 Science Applications International Corporation Battery assembly
CN206878083U (zh) 2017-06-23 2018-01-12 宁德时代新能源科技股份有限公司 电池模组
JP6682481B2 (ja) * 2017-08-04 2020-04-15 矢崎総業株式会社 導体モジュール
CN107785526A (zh) * 2017-09-29 2018-03-09 苏州西典机电有限公司 动力电池用集成模块
CN209029462U (zh) * 2018-08-19 2019-06-25 江西赣锋电池科技有限公司 一种电池包母排及电池包
CN208806294U (zh) * 2018-09-21 2019-04-30 苏州西典机电有限公司 具有温度监测功能的动力电池用集成母排
CN209357817U (zh) 2019-01-29 2019-09-06 广州安费诺诚信软性电路有限公司 一种动力电池汇流排的组合结构

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013196932A (ja) * 2012-03-21 2013-09-30 Toshiba Corp 二次電池装置
CN109103405A (zh) * 2018-08-19 2018-12-28 江西赣锋电池科技有限公司 一种电池包母排、制备方法及电池包
CN208767383U (zh) * 2018-11-01 2019-04-19 华霆（合肥）动力技术有限公司 一种连接结构及电源设备
CN109830640A (zh) * 2019-01-29 2019-05-31 广州安费诺诚信软性电路有限公司 一种动力电池汇流排的组合结构及制造方法
CN210744018U (zh) * 2019-10-21 2020-06-12 宁德时代新能源科技股份有限公司 连接组件、电池模块、电池组和装置
CN210744068U (zh) * 2019-10-21 2020-06-12 宁德时代新能源科技股份有限公司 连接组件、电池模块、电池组和装置
CN210743992U (zh) * 2019-10-21 2020-06-12 宁德时代新能源科技股份有限公司 电池模块、电池组及使用电池单体作为电源的装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023124825A (ja) * 2022-02-25 2023-09-06 モレックス エルエルシー バッテリ接続モジュール
JP7705423B2 (ja) 2022-02-25 2025-07-09 モレックス エルエルシー バッテリ接続モジュール

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JP2022553539A (ja) 2022-12-23
EP3930091B1 (en) 2023-05-24
KR20220069058A (ko) 2022-05-26
EP3930091A4 (en) 2022-06-08
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