WO2024075772A1 - 配線モジュール - Google Patents
配線モジュール Download PDFInfo
- Publication number
- WO2024075772A1 WO2024075772A1 PCT/JP2023/036203 JP2023036203W WO2024075772A1 WO 2024075772 A1 WO2024075772 A1 WO 2024075772A1 JP 2023036203 W JP2023036203 W JP 2023036203W WO 2024075772 A1 WO2024075772 A1 WO 2024075772A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- terminal
- electrode
- electrode lead
- inclined surface
- plate thickness
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
-
- 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
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
-
- 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
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
- H01M50/557—Plate-shaped terminals
-
- 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
-
- 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
- H01M50/591—Covers
-
- 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 disclosure relates to a wiring module.
- High-voltage battery packs used in electric vehicles, hybrid vehicles, etc. usually have many stacked battery cells that are electrically connected in series or parallel by a wiring module.
- a conventional wiring module of this kind is described in JP-A-2020-527848 (Patent Document 1 below).
- the battery module described in Patent Document 1 comprises a cell assembly in which multiple battery cells with electrode leads at their front and rear ends are stacked in the left-right direction, a module housing configured to accommodate the cell assembly in an internal space defined by four side walls on the top, bottom, left, and right, and end frames that are attached to the front and back of the cell assembly and electrically connect the cell assembly to an external device.
- the cell assembly has a portion where the electrode leads of adjacent battery cells are bent close to each other, overlapped, and electrically connected, eliminating the need to provide a bus bar to connect the electrode leads together.
- the electrode leads are electrically connected to module terminals provided on the end frame.
- the portion where the electrode leads are connected is prone to large manufacturing tolerances, especially in the front-to-rear direction, due to the bending of the electrode leads and the welding of the electrode leads together. For this reason, when the end frame is assembled to the cell assembly, welding may be performed without sufficient contact between the electrode leads and the module terminals, resulting in poor electrical connection.
- the wiring module disclosed herein is a wiring module that is assembled to a battery stack that is constructed by stacking a plurality of laminated batteries each having an electrode lead, and that has a joint where the electrode leads of the laminated batteries are overlapped and joined together, in an assembly direction perpendicular to the plate thickness direction of the joint, and that includes a terminal, an electric wire connected to the terminal, and a protector that holds the terminal and the electric wire, and among the electrode leads, those that form the joint are joint electrode leads, and the terminal includes an electrode connection portion that is electrically connected to the joint electrode lead, and the protector includes a protector body and a terminal housing portion that positions and houses the terminal, and the terminal housing portion is freely movable and connected to the protector body via a hinge portion.
- This disclosure provides a wiring module that can reduce poor contact between electrode leads and terminals.
- FIG. 1 is a perspective view of an electricity storage module according to a first embodiment.
- FIG. 2 is a front view of the power storage module.
- FIG. 3 is an enlarged front view of the electricity storage module showing the periphery of the terminal accommodating portion.
- FIG. 4 is a rear view of the power storage module.
- FIG. 5 is an enlarged perspective view of the electricity storage module showing the periphery of the terminal accommodating portion.
- FIG. 6 is an enlarged perspective view of the protector showing the periphery of the terminal accommodating portion.
- FIG. 7 is a perspective view of a terminal.
- FIG. 8 is a perspective view of a battery stack.
- FIG. 9 is a diagram showing how the wiring module is assembled to the battery stack in the assembly direction.
- FIG. 10 is a cross-sectional view taken along line AA of FIG.
- FIG. 11 is a cross-sectional view taken along line BB of FIG. 3, showing a state in which the hinge portion is not deformed.
- FIG. 12 is a cross-sectional view taken along the line BB of FIG. 3, showing a state in which the end of the joining electrode lead is in contact with the inclined surface.
- FIG. 13 is a diagram showing a state in which the joining electrode lead and the electrode connection portion are connected in a state in which the terminal accommodating portion has moved forward due to deformation of the hinge portion in the BB cross section of FIG. FIG.
- FIG. 14 is a diagram showing a state in which the joining electrode lead and the electrode connection portion are connected in a state in which the terminal accommodating portion has moved rearward due to deformation of the hinge portion in the BB cross section of FIG.
- FIG. 15 is a cross-sectional view taken along line CC of FIG.
- FIG. 16 is a cross-sectional view taken along line DD of FIG.
- FIG. 17 is a cross-sectional view taken along the line DD in FIG. 3, showing a state in which the joining electrode lead is disposed further rearward as it moves leftward.
- FIG. 18 is a cross-sectional view taken along the line EE of FIG. 3, showing a state in which the joining electrode lead has a warped portion.
- FIG. 19 is a cross-sectional view taken along the line FF of FIG.
- FIG. 20 is an enlarged front view of the electricity storage module showing the periphery of the terminal accommodating portion according to the second embodiment.
- FIG. 21 is a cross-sectional view taken along line GG of FIG. 22 is a cross-sectional view taken along line GG of FIG. 20, showing a state in which the terminal accommodating portion has been rotated.
- the wiring module of the present disclosure is constructed by stacking a plurality of laminated type batteries each having an electrode lead, and is assembled to a battery stack having a joint where the electrode leads of the laminated type batteries are overlapped and joined, in an assembly direction perpendicular to the plate thickness direction of the joint, and includes a terminal, an electric wire connected to the terminal, and a protector that holds the terminal and the electric wire, and among the electrode leads, those that constitute the joint are joint electrode leads, and the terminal includes an electrode connection portion that is electrically connected to the joint electrode lead, and the protector includes a protector body and a terminal housing portion that positions and houses the terminal, and the terminal housing portion is freely movable and connected to the protector body via a hinge portion.
- the electrode connection portion is more likely to move along the joining electrode lead, which helps prevent poor contact between the joining electrode lead and the terminal.
- the hinge portion is configured with multiple thin portions.
- This configuration makes it easier for the hinge portion to deform, and the terminal housing portion to move more easily relative to the protector body.
- This configuration makes it easier to control the movement of the terminal housing relative to the protector body.
- the terminal is connected to the electrode connection portion and has an inclined surface that is inclined toward one side in the plate thickness direction as it moves toward the back in the assembly direction, and it is preferable that the inclined surface is arranged to include at least a portion of the range of positions in the plate thickness direction where the joining electrode lead can be arranged.
- the inclined surface slides against the end of the joining electrode lead on the front side in the assembly direction, allowing the terminal to move in the plate thickness direction relative to the joining electrode lead, making it easier for the electrode connection part to move along the joining electrode lead.
- the terminal accommodating portion has an electrode support piece arranged opposite the electrode connection portion in the plate thickness direction, the inclined surface is inclined so as to move away from the electrode support piece as it goes toward the back in the assembly direction, and the joining electrode lead is arranged between the electrode connection portion and the electrode support piece in the plate thickness direction.
- the joining electrode lead is disposed between the electrode connection portion and the electrode support piece, so that the electrode connection portion can easily move along the joining electrode lead.
- the electrode support piece has an inclined surface on the innermost end in the assembly direction that is inclined toward the other side in the plate thickness direction as it goes toward the innermost end in the assembly direction, and it is preferable that the inclined surface on the electrode support piece is arranged to include at least a portion of the range of positions in the plate thickness direction where the joining electrode lead can be arranged.
- the inclined surface on the electrode support piece slides against the end of the joining electrode lead on the front side in the assembly direction, allowing the terminal accommodating portion to move in the plate thickness direction relative to the joining electrode lead, making it easier to arrange the joining electrode lead between the electrode connection portion and the electrode support piece.
- the direction perpendicular to the plate thickness direction and the assembly direction is the terminal width direction
- the terminal accommodating portion is provided with a pair of terminal protection arms extending from the inclined surface to the rear in the assembly direction on both sides of the electrode connection portion in the terminal width direction, and the pair of terminal protection arms are preferably arranged on one side of the joining electrode lead in the plate thickness direction.
- the terminal can be protected by the terminal protection arm.
- a terminal protection arm side inclined surface is provided that is inclined so as to be positioned on one side in the plate thickness direction as it goes rearward in the assembly direction, and it is preferable that the terminal protection arm side inclined surface is arranged so as to include at least a part of the range of positions in the plate thickness direction where the joining electrode lead can be arranged.
- the inclined surface on the terminal protection arm slides against the end of the joining electrode lead on the front side in the assembly direction, allowing the terminal accommodating portion to move in the plate thickness direction relative to the joining electrode lead, making it easier to arrange the joining electrode lead between the electrode connection portion and the electrode support piece.
- An energy storage module 10 including a wiring module 20 of the present embodiment is mounted on a vehicle such as an electric vehicle or a hybrid vehicle and used as a drive source for the vehicle.
- a vehicle such as an electric vehicle or a hybrid vehicle
- the reference numerals for the other components may be omitted.
- the direction indicated by the arrow X is the downward direction
- the direction indicated by the arrow Y is the leftward direction
- the direction indicated by the arrow Z is the forward direction.
- the energy storage module 10 includes a battery stack 11L shown in Fig. 8 and wiring modules 20 attached to the front and rear sides of the battery stack 11L as shown in Fig. 9. As shown in Fig. 1 and Fig. 9, the energy storage module 10 of this embodiment further includes a housing 14 that covers the battery stack 11L from all four sides, i.e., top, bottom, left and right.
- the housing 14 includes a bottom 15 disposed on the underside of the battery stack 11L, a ceiling 16 disposed on the top side of the battery stack 11L, and a pair of side portions 17 that connect the bottom 15 and the ceiling 16 on both the left and right sides.
- the wiring module 20 of this embodiment is adapted to be assembled to the battery stack 11L housed in the housing 14 in an assembly direction (direction indicated by arrow X) (details will be described later).
- assembly direction direction indicated by arrow X
- the present specification will refer to the direction indicated by arrow X as being downward, and the assembly direction will be described as being downward, but the battery stack 11L and the wiring module 20 may be disposed so that the assembly direction is forward or leftward, for example.
- the direction corresponding to the direction indicated by arrow X in the specification does not have to be the same when the wiring module 20 is assembled to the battery stack 11L and when the energy storage module 10 is in use.
- the battery stack 11L is configured by stacking multiple laminated batteries 11 (eight in this embodiment) in the left-right direction.
- the laminated battery 11 is long in the front-rear direction and has a flat shape in the left-right direction.
- An electricity storage element (not shown) is housed inside the laminated battery 11.
- a pair of electrode leads 12 are disposed on both sides in the front-rear direction of the laminated battery 11 and protrude in opposite directions.
- the pair of electrode leads 12 are plate-shaped and have opposite polarities.
- the battery stack 11L is provided with joints 13 where the electrode leads 12 of adjacent laminated batteries 11 are electrically connected to each other. That is, the electrode leads 12 are bent at right angles to the left or right, overlapped, and joined by laser welding to form the joints 13.
- the plate thickness direction of the joints 13 is the front-rear direction.
- the direction perpendicular to the plate thickness direction and the assembly direction of the joints 13 is the terminal width direction (the left-right direction in this embodiment).
- those that form the joints 13 are joined electrode leads 12A.
- the process of forming the joint 13 includes bending the electrode lead 12 and laser welding, so the tolerance in the thickness direction of the joint 13 (and the joining electrode lead 12A) is particularly likely to be large.
- the tolerance in the thickness direction of the joint 13 (and the joining electrode lead 12A) is a larger value than the thickness of the electrode lead 12.
- the electrode leads 12 other than the joining electrode leads 12A, i.e., those that do not form the joining portion 13, are referred to as end electrode leads 12B.
- the end electrode leads 12B are arranged at both ends of the battery stack 11L and protrude forward.
- the end electrode leads 12B form the positive or negative electrode of the entire battery stack 11L.
- the wiring module 20 of this embodiment includes a terminal 30 connected to the joining electrode lead 12A, a bus bar 40 connected to the end electrode lead 12B, an electric wire 45 connected to the terminal 30 or the bus bar 40, and a protector 50 that holds the terminal 30, the bus bar 40, and the electric wire 45.
- the configuration of the wiring module 20 disposed on the front side of the battery stack 11L will be described in detail below.
- the wiring module 20 disposed on the rear side of the battery stack 11L is configured similarly to the wiring module 20 disposed on the front side of the battery stack 11L, except that it does not include a bus bar 40.
- the protector 50 is made of insulating synthetic resin and has a plate shape.
- the protector 50 has a protector body 51 that is positioned relative to the housing 14 (and the battery stack 11L). Although detailed configuration will not be described, the protector body 51 and the housing 14 have concave and convex shapes that extend in the assembly direction and engage with each other, guiding the assembly of the wiring module 20 to the battery stack 11L.
- electrode receiving portions 54 are provided in parallel in the left-right direction in the vertical center of the protector body 51.
- the electrode receiving portions 54 are formed to penetrate in the front-rear direction and have a rectangular shape that is long vertically.
- the electrode receiving portions 54 are composed of a joining electrode receiving portion 54A that receives the joining portion 13 and the joining electrode lead 12A, and an end electrode receiving portion 54B that receives the end electrode lead 12B.
- the lower side of the electrode receiving portion 54 is also open downwards, so that the electrode lead 12 does not interfere with the electrode receiving portion 54 when the wiring module 20 is assembled.
- busbar holding portions 55 for holding the busbar 40 are provided on the upper and lower sides of the end electrode receiving portion 54B.
- a bolt fastening portion 55A for fastening the busbar 40 with a bolt is provided near the upper busbar holding portion 55.
- a terminal accommodating portion 56 for positioning and accommodating the terminal 30 is provided on the upper side of the joining electrode receiving portion 54A.
- the terminal accommodating portion 56 is connected to the protector body 51 via a single hinge portion 57.
- the hinge portion 57 includes a protruding piece 58 protruding forward from the protector body 51, and an extension piece 59 extending from the protruding piece 58 toward the rear (downward) in the assembly direction and connected to the terminal accommodating portion 56.
- the hinge portion 57 includes thin-walled portions 60 that are thinner in the plate thickness direction than the surrounding area at the joint portion between the terminal accommodating portion 56 and the extension piece 59, the joint portion between the extension piece 59 and the protruding piece 58, and the joint portion between the protruding piece 58 and the protector body 51.
- the thin-walled portions 60 are formed in a groove shape that is U-shaped in a side view and extend in the left-right direction.
- the thin-walled portions 60 provided at the joint portion between the terminal accommodating portion 56 and the extension piece 59 and the joint portion between the extension piece 59 and the protruding piece 58 are defined as first thin-walled portions 60A.
- the thin-walled portions 60 provided at the joint portion between the protruding piece 58 and the protector body 51 are defined as second thin-walled portions 60B.
- the first thin portion 60A is formed to be thinner than the second thin portion 60B.
- the thin portion 60 when a force is applied to the terminal accommodating portion 56, the thin portion 60 functions as a fold, allowing the hinge portion 57 to bend and deform. In other words, the deformation of the hinge portion 57 allows the terminal accommodating portion 56 to move freely relative to the protector body 51. As described below, the hinge portion 57 is easily deformed by bending at the first thin portion 60A, which is particularly thin.
- the terminal accommodating portion 56 includes a barrel accommodating recess 61 coupled to the hinge portion 57, an electrode support piece 62 disposed on the rear side in the assembly direction, and a central frame portion 63 disposed between the barrel accommodating recess 61 and the electrode support piece 62.
- the barrel accommodating recess 61 extends in the assembly direction and has a gate shape recessed rearward.
- the wire barrel portion 35A, the insulation barrel portion 35B, and a part of the electric wire 45 of the terminal 30 are accommodated in the barrel accommodating recess 61.
- the electrode support piece 62 is a plate-shaped member and is arranged to be disposed rearward of the electrode connection portion 31 of the terminal 30.
- the electrode support piece 62 extends downward from the lower end of the left-right center of the central frame portion 63 and is inclined slightly forward.
- An electrode support piece side inclined surface 62A is provided at the lower end of the electrode support piece 62, which is inclined so as to be positioned further rearward as it extends downward.
- the electrode support piece side inclined surface 62A is arranged to include the rear portion of the normal position range WT.
- a lower abutment portion 64A and an upper abutment portion 64B are provided inside the central frame portion 63 with a gap therebetween in the vertical direction.
- the lower abutment portion 64A is arranged so as to abut from below near the center in the horizontal direction of the bent portion 33 of the terminal 30.
- the upper abutment portion 64B is arranged so as to abut from above against both ends in the horizontal direction of the bent portion 33. Therefore, the lower abutment portion 64A and the upper abutment portion 64B constitute a first displacement suppression portion 65 that suppresses displacement of the terminal 30 in the vertical direction.
- a downwardly protruding locking projection 66 is provided on the front portion of the upper abutment portion 64B.
- the locking projection 66 has an engagement surface 66A that is inclined downward toward the rear, and a front locking portion 66B that is disposed perpendicular to the bent portion 33 and serves as the rear end surface of the locking projection 66.
- the terminal 30 can be easily accommodated in the terminal accommodating portion 56 by sliding the rear end of the bent portion 33 against the engagement surface 66A.
- the front locking portion 66B locks onto the front end of the bent portion 33, thereby preventing the terminal 30 from being displaced forward.
- a rear locking portion 63A that abuts against the rear end of the bent portion 33 is provided on the rear portion of the central frame portion 63. The rear locking portion 63A prevents the terminal 30 from being displaced backward.
- a second displacement suppression portion 68 is provided in the lower wall of the central frame portion 63 in the form of a notch. As shown in FIG. 5 and FIG. 16, the second displacement suppression portion 68 is arranged so as to be able to abut against the electrode connection portion 31 of the terminal 30 from both the left and right sides, and is designed to suppress displacement of the terminal 30 in the left-right direction.
- Terminal protection arm As shown in Fig. 5, a pair of terminal protection arms 67 are provided extending downward from the lower end portions on both the left and right sides of the central frame portion 63. The pair of terminal protection arms 67 are arranged on both the left and right sides of the electrode connection portion 31. As shown in Fig. 11, the terminal protection arm 67 is arranged forward with respect to the joining electrode lead 12A and extends downward beyond the inclined surface 32. A terminal protection arm-side inclined surface 67A is provided at the lower end of the terminal protection arm 67, which is inclined so as to be positioned more forward as it extends downward. As shown in Fig. 12, when the wiring module 20 is assembled to the battery stack 11L, the terminal protection arm-side inclined surface 67A is arranged to include the front portion of the normal position range WT.
- the terminal 30 is provided by processing a conductive metal plate material.
- the terminal 30 includes an electrode connection portion 31, an inclined surface 32 provided continuous with the electrode connection portion 31 toward the rear (downward) in the assembly direction, and a bent portion 33 provided extending rearward from the upper end of the electrode connection portion 31.
- a trapezoidal portion 38 narrowing toward the bottom is provided between the electrode connection portion 31 and the inclined surface 32.
- a wire connection portion 35 is connected to the rear end of the bent portion 33 via a connecting portion 34.
- the wire connection portion 35 includes a wire barrel portion 35A that is crimped to a core wire 46 of the electric wire 45, and an insulation barrel portion 35B that is crimped to an insulating coating 47 of the electric wire 45.
- the terminal 30 is configured to be connected to the joint 13 or to a part of the joining electrode lead 12A that constitutes the joint 13.
- the terminal 30 is not a member for connecting adjacent joining electrode leads 12A, but a member for connecting a previously connected joining electrode lead 12A (joint 13) and an electric wire 45.
- the vertical dimension of the terminal 30 may be smaller than the vertical dimension of the joining electrode lead 12A.
- the electrode connection portion 31 is disposed in front of and spaced from the electrode support piece 62.
- the minimum dimension between the electrode connection portion 31 and the electrode support piece 62 in the front-rear direction is approximately the same as the plate thickness dimension of the joint portion 13.
- the joining electrode lead 12A is disposed between the electrode connection portion 31 and the electrode support piece 62 in the front-rear direction.
- the electrode connection portion 31 is electrically connected to the joining electrode lead 12A by laser welding.
- the bent portion 33 has a plate shape with its thickness direction being in the up-down direction, and is arranged perpendicular to the joint portion 13.
- the bent portion 33 is arranged between the lower contact portion 64A and the upper contact portion 64B.
- a front engaged portion 37 having a notch shape is provided at the front end portion on both the left and right sides of the bent portion 33.
- the front engaged portion 37 is arranged to be engaged with the front engaging portion 66B.
- the rear end portion of the bent portion 33 is formed as the rear engaged portion 36, and is arranged to be in contact with the rear engaging portion 63A.
- the inclined surface 32 is inclined so that it is positioned more forward as it extends downward. That is, the inclined surface 32 is inclined so that it moves away from the electrode support piece 62 in the front-to-rear direction as it extends downward.
- the inclined surface 32 is disposed so as to include the front portion of the normal position range WT.
- the inclined surface 32 is formed to connect to the lower end of the left-right center position of the electrode connection portion 31, and the left-right dimension D1 of the inclined surface 32 is smaller than the left-right dimension D2 of the electrode connection portion 31. Therefore, when the electrode connection portion 31 and the joining electrode lead 12A are brought into close contact with a jig (not shown) and laser welding is performed, the center of the electrode connection portion 31 can be welded while avoiding the inclined surface 32 and holding both left and right ends of the electrode connection portion 31 with the jig.
- a trapezoidal portion 38 is provided flush with the electrode connection portion 31.
- the trapezoidal portion 38 has a left-right dimension that decreases toward the bottom.
- the trapezoidal portion 38 has a shape that is symmetrical in the left-right direction.
- the lower end of the trapezoidal portion 38 is disposed in the left-right center position with respect to the electrode connection portion 31, and is connected to the inclined surface 32.
- the left-right dimension D3 of the lower end of the trapezoidal portion 38 is the same as the left-right dimension D1 of the inclined surface 32.
- the trapezoidal portion 38 has an outer edge portion 38A that continuously connects both left and right ends of the inclined surface 32 and both left and right ends of the electrode connection portion 31.
- the busbar 40 has a plate-like shape and is formed by processing a conductive metal plate material. As shown in Fig. 2, the busbar 40 is held by the busbar holding portion 55 of the protector 50 so that the plate thickness direction is the left-right direction. As shown in Fig. 1, the center portion of the busbar 40 is a busbar main body 41 to which the end electrode lead 12B is connected. When connecting the busbar main body 41 and the end electrode lead 12B, the end electrode lead 12B may be appropriately bent so as to abut against the busbar main body 41. A busbar side connection portion 42 bent left or right with respect to the busbar main body 41 is provided at the upper portion of the busbar 40.
- the busbar side connection portion 42 has a through hole (not shown) through which the bolt 42A is inserted, and is bolted to the bolt fastening portion 55A of the protector 50.
- the external connection terminal 43 and the relay terminal 44 are placed on the busbar side connection portion 42 and are bolted together with the busbar side connection portion 42. In this way, the busbar side connection portion 42 is electrically connected to the external connection terminal 43 and the relay terminal 44.
- the external connection terminal 43 is a conductive metal plate arranged to protrude to the left or right of the storage module 10, and is used to connect the storage module 10 to an external device (not shown).
- the relay terminal 44 is made of a conductive metal plate material and is used to connect the busbar side connection portion 42 and the electric wire 45. The relay terminal 44 is connected to the electric wire 45 in the same way as the terminal 30.
- the electric wire 45 has a core wire 46 (not shown in any figures other than Fig. 3 and Fig. 7) and an insulating coating 47 that covers the core wire 46.
- one end of the electric wire 45 is connected to the terminal 30 or the relay terminal 44, and the other end of the electric wire 45 is bundled together and connected to a connector 48.
- the electric wire 45 is arranged at a predetermined position of the protector 50 by a routing projection 69, an electric wire retainer 70, a routing groove 71, and the like provided on the upper side of the protector 50.
- the connector 48 is made of insulating synthetic resin and has a block shape as shown in FIG. 1.
- a female terminal (not shown) is accommodated inside the connector 48.
- the connector 48 is adapted to mate with a mating connector (not shown) having a male terminal.
- the mating connector is connected to an external ECU (Electronic Control Unit) or the like via an electric wire (not shown).
- the ECU is equipped with a microcomputer, elements, etc., and is of a well-known configuration with functions for detecting the voltage, current, temperature, etc. of each laminated battery 11, and controlling the charging and discharging of each laminated battery 11, etc.
- This embodiment is configured as described above. Below, we will explain the movement of the terminals 30 when assembling the wiring module 20 to the battery stack 11L.
- the joining electrode lead 12A occupies the same front-rear position in the left-right direction.
- the upper end of the joining electrode lead 12A abuts the terminal protection arm side inclined surface 67A.
- the joining electrode lead 12A and the terminal protection arm side inclined surface 67A come into contact, a force is applied to the terminal accommodating portion 56 toward the front side (upward) in the assembly direction. Since the terminal accommodating portion 56 is allowed to move freely with respect to the protector body 51 by the hinge portion 57, the hinge portion 57 bends mainly at the second thin portion 60B, and thus the upward force applied to the terminal accommodating portion 56 can be absorbed (see FIG. 6).
- the upper end of the joining electrode lead 12A comes into sliding contact with the terminal protection arm side inclined surface 67A, causing the terminal accommodating portion 56 to move forward.
- the hinge portion 57 bends at the first thin portion 60A, causing the terminal accommodating portion 56 to move forward to match the front-to-rear position of the joining electrode lead 12A.
- the joining electrode lead 12A also comes into sliding contact with the inclined surface 32, and ultimately the joining electrode lead 12A (joint portion 13) is disposed between the electrode connection portion 31 and the electrode support piece 62.
- the terminal protection arm side inclined surface 67A is provided below the inclined surface 32 of the terminal 30, so the joining electrode lead 12A comes into sliding contact with the terminal protection arm side inclined surface 67A before the inclined surface 32. This makes it possible to minimize the sliding contact between the joining electrode lead 12A and the inclined surface 32, making it easy to avoid the joining electrode lead 12A and the inclined surface 32 engaging with each other without sliding contact.
- the upper end of the joining electrode lead 12A comes into contact with the electrode support piece side inclined surface 62A (see FIG. 12).
- the wiring module 20 moves downward, the upper end of the joining electrode lead 12A slides against the electrode support piece side inclined surface 62A, causing the terminal accommodating portion 56 to move rearward.
- the hinge portion 57 bends at the first thin portion 60A, causing the terminal accommodating portion 56 to move rearward to match the front-to-rear position of the joining electrode lead 12A.
- the joining electrode lead 12A when the joining electrode lead 12A is positioned exactly between the terminal protection arm side inclined surface 67A and the electrode support piece side inclined surface 62A, the joining electrode lead 12A (joint 13) is positioned as it is between the electrode connection part 31 and the electrode support piece 62 (see FIG. 11). In other words, the hinge part 57 does not deform, and the position of the terminal accommodating part 56 remains the same as before the joining electrode lead 12A is attached.
- the joining electrode lead 12A occupies different front-rear positions in the left-right direction, for example, the case where the joining electrode lead 12A is arranged rearward toward the left side as shown in FIG. 17.
- the right part of the joining electrode lead 12A is located in front of the normal position range WT, so the right part of the terminal accommodating part 56 moves forward due to the deformation of the hinge part 57, as in the case shown in FIG. 13.
- the left part of the joining electrode lead 12A is located in the rear of the normal position range WT, so the left part of the terminal accommodating part 56 moves rearward due to the deformation of the hinge part 57, as in the case shown in FIG. 14.
- the direction of deformation of the hinge part 57 changes in the left-right direction, so that the terminal accommodating part 56 can move so as to rotate around an axis extending in the up-down direction (perpendicular to the paper surface) as shown in FIG. 17. Therefore, the joining electrode lead 12A (joint part 13) can be arranged between the electrode connection part 31 and the electrode support piece 62.
- FIG. 18 shows a state in the middle of assembling the wiring module 20 to the battery stack 11L, before the upper end of the joining electrode lead 12A comes into contact with the terminal 30.
- a trapezoidal portion 38 is provided between the inclined surface 32 and the electrode connection portion 31 so as to continuously expand in the left-right direction. Therefore, when the wiring module 20 is moved to bring the terminal 30 into contact with the joining electrode lead 12A, the warped portion 12C of the joining electrode lead 12A can slide against the outer edge portion 38A of the trapezoidal portion 38. This suppresses interference between the joining electrode lead 12A and the electrode connection portion 31.
- the wiring module 20 in the first embodiment is constructed by stacking a plurality of laminated batteries 11 each having an electrode lead 12, and is assembled to a battery stack 11L having a joint 13 where the electrode leads 12 of the laminated batteries 11 are overlapped and joined, in an assembly direction perpendicular to the plate thickness direction of the joint 13.
- the wiring module 20 comprises a terminal 30, an electric wire 45 connected to the terminal 30, and a protector 50 that holds the terminal 30 and the electric wire 45.
- the electrode leads 12 one that constitutes the joint 13 is a joint electrode lead 12A.
- the terminal 30 has an electrode connection portion 31 electrically connected to the joint electrode lead 12A.
- the protector 50 comprises a protector body 51 and a terminal accommodating portion 56 that positions and accommodates the terminal 30, and the terminal accommodating portion 56 is freely movable connected to the protector body 51 via a hinge portion 57.
- the electrode connection portion 31 can easily move along the joining electrode lead 12A, thereby preventing poor contact between the joining electrode lead 12A and the terminal 30.
- the hinge portion 57 is configured with multiple thin portions 60.
- the above configuration allows the hinge portion 57 to deform easily, making it easier for the terminal accommodating portion 56 to move relative to the protector body 51.
- the terminal 30 is connected to the electrode connection portion 31 and has an inclined surface 32 that is inclined so as to be positioned to one side in the plate thickness direction as it moves toward the back in the assembly direction, and the inclined surface 32 is arranged to include at least a part of the range WT of positions in the plate thickness direction in which the joining electrode lead 12A can be arranged.
- the inclined surface 32 slides against the end of the joining electrode lead 12A on the front side in the assembly direction, allowing the terminal 30 to move in the plate thickness direction relative to the joining electrode lead 12A, making it easier for the electrode connection portion 31 to move along the joining electrode lead 12A.
- the terminal accommodating portion 56 has an electrode support piece 62 arranged opposite the electrode connection portion 31 in the plate thickness direction, and the inclined surface 32 is inclined so as to move away from the electrode support piece 62 as it moves toward the back in the assembly direction, and the joining electrode lead 12A is arranged between the electrode connection portion 31 and the electrode support piece 62 in the plate thickness direction.
- the joining electrode lead 12A is disposed between the electrode connection portion 31 and the electrode support piece 62, so that the electrode connection portion 31 can easily move along the joining electrode lead 12A.
- the electrode support piece 62 has an electrode support piece side inclined surface 62A at the end on the rear side in the assembly direction, which is inclined so as to be positioned on the other side in the plate thickness direction as it goes rearward in the assembly direction, and the electrode support piece side inclined surface 62A is arranged to include at least a part of the range WT of positions in the plate thickness direction where the joining electrode lead 12A can be arranged.
- the electrode support piece side inclined surface 62A slides against the front end of the joining electrode lead 12A in the assembly direction, allowing the terminal accommodating portion 56 to move in the plate thickness direction relative to the joining electrode lead 12A, making it easier to arrange the joining electrode lead 12A between the electrode connection portion 31 and the electrode support piece 62.
- the direction perpendicular to the plate thickness direction and the assembly direction is the terminal width direction
- the terminal accommodating portion 56 is provided with a pair of terminal protection arms 67 that extend from the inclined surface 32 toward the rear in the assembly direction on both sides of the electrode connection portion 31 in the terminal width direction, and the pair of terminal protection arms 67 are arranged on one side of the joining electrode lead 12A in the plate thickness direction.
- the terminal 30 can be protected by the terminal protection arm 67.
- the ends of the pair of terminal protection arms 67 on the rear side in the assembly direction are provided with terminal protection arm side inclined surfaces 67A that are inclined so as to be positioned to one side in the plate thickness direction as they move toward the rear in the assembly direction, and the terminal protection arm side inclined surfaces 67A are arranged to include at least a part of the range WT of positions in the plate thickness direction where the joining electrode lead 12A can be arranged.
- the terminal protection arm side inclined surface 67A slides against the front end of the joining electrode lead 12A in the assembly direction, allowing the terminal accommodating portion 56 to move in the plate thickness direction relative to the joining electrode lead 12A, making it easier to arrange the joining electrode lead 12A between the electrode connection portion 31 and the electrode support piece 62.
- a second embodiment of the present disclosure will be described with reference to Fig. 20 to Fig. 22.
- a wiring module 120 according to the second embodiment is configured similarly to the wiring module 20 of the first embodiment, except for a hinge portion 157 that connects a terminal accommodating portion 56 and a protector body 51.
- the same members as those in the first embodiment are given the same reference numerals as those in the first embodiment, and descriptions of the same configurations, functions, and effects as those in the first embodiment will be omitted.
- two hinge portions 157 in the second embodiment are provided for each terminal accommodating portion 56.
- the hinge portions 157 connect the left and right side walls of the barrel accommodating recess 61 to the protector body 51.
- the hinge portions 157 are configured similarly to the hinge portions 57 in the first embodiment, and are bent mainly at the first thin portion 60A, allowing the terminal accommodating portion 56 to move in the front-rear direction.
- the hinge portions 157 are disposed on the left and right of the terminal accommodating portion 56, which allows the terminal accommodating portion 56 to move and rotate around an axis extending in the vertical direction. For example, if the joining electrode lead 12A is disposed toward the rear as it moves toward the left side (see FIG. 17), as shown in FIG. 22, the extension piece 59 of the right hinge portion 157 tilts forward and the extension piece 59 of the left hinge portion 157 tilts backward, allowing the terminal accommodating portion 56 to rotate counterclockwise when viewed from above.
- the thin portion 60 of the hinge portion 157 is arranged to extend in the vertical direction, so compared to the hinge portion 57 of the first embodiment, the hinge portion 157 is less likely to bend in the vertical direction. As described above, by providing multiple hinge portions 157 for the terminal accommodating portion 56, it becomes easier to control the direction in which the terminal accommodating portion 56 is likely to move.
- This configuration makes it easier to control the movement of the terminal accommodating portion 56 relative to the protector body 51.
- the joint 13 is configured by joining two electrode leads 12, and the laminated type battery 11 is connected in series, but this is not limited to the above.
- the joint may be configured by joining three or more electrode leads, and the laminated type battery may be connected in parallel.
- the terminal accommodating portion 56 is provided with the terminal protection arm 67. However, this is not limited to this, and the terminal protection arm 67 does not necessarily have to be provided.
- one hinge portion 57 is provided for each terminal accommodating portion 56, and in the second embodiment, two hinge portions 157 are provided for each terminal accommodating portion 56, but this is not limited thereto, and three or more hinge portions may be provided for each terminal accommodating portion.
- the position of the hinge portion relative to the terminal accommodating portion can be changed as desired.
- the trapezoidal portion 38 is provided between the electrode connection portion 31 and the inclined surface 32. However, this is not limited to this, and the trapezoidal portion does not necessarily have to be provided.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
最初に本開示の実施態様を列挙して説明する。
以下に、本開示の実施形態について説明する。本開示はこれらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内での全ての変更が含まれることが意図される。
本開示の実施形態1について、図1から図19を参照しつつ説明する。本実施形態の配線モジュール20を備えた蓄電モジュール10は、例えば、電気自動車またはハイブリッド自動車等の車両に搭載されて、車両の駆動源として用いられる。以下の説明においては、複数の同一部材については、一部の部材にのみ符号を付し、他の部材の符号を省略する場合がある。以下では、矢線Xの示す方向を下方、矢線Yの示す方向を左方、矢線Zの示す方向を前方として説明する。
蓄電モジュール10は、図8に示す電池積層体11Lと、図9に示すように電池積層体11Lの前側および後側に組み付けられる配線モジュール20と、を備える。図1及び図9に示すように、本実施形態の蓄電モジュール10は、さらに電池積層体11Lを上下左右の四方から覆う筐体14を備える。筐体14は、電池積層体11Lの下面側に配される底部15と、電池積層体11Lの上面側に配される天井部16と、底部15と天井部16とを左右両側において接続する一対の側方部17と、からなる。
図9に示すように、本実施形態の配線モジュール20は、筐体14に収容された電池積層体11Lに対して、組み付け方向(矢線Xの示す方向)に組み付けられるようになっている(詳細は後述する)。本明細書では、便宜上、矢線Xの示す方向を下方に統一し、組み付け方向を下方として説明するが、例えば、組み付け方向が前方や左方となるように、電池積層体11Lや配線モジュール20を配置してもよい。また、電池積層体11Lに配線モジュール20を組み付ける時と蓄電モジュール10の使用時において、明細書における矢線Xの示す方向に対応する方向(電極リード12の幅方向)は同一でなくてもよい。
図8に示すように、電池積層体11Lは、ラミネート型電池11が左右方向に複数個(本実施形態では8個)積層されて構成されている。ラミネート型電池11は、前後方向に長く、左右方向に扁平な形状をなしている。ラミネート型電池11の内部には、蓄電要素(図示せず)が収容されている。ラミネート型電池11の前後方向の両側には、一対の電極リード12が配置され、互いに反対方向を向くようにして突出している。一対の電極リード12は、板状をなし、互いに反対の極性を有している。
図8に示すように、電池積層体11Lには、隣り合うラミネート型電池11の電極リード12同士が電気的に接続された接合部13が設けられている。すなわち、電極リード12が、直角に左方または右方に折り曲げられ、重ね合わせられて、レーザー溶接により接合されることにより、接合部13が構成されている。接合部13の板厚方向は、前後方向とされている。接合部13の板厚方向及び組み付け方向に直交する方向は、端子幅方向(本実施形態では左右方向)とされている。電極リード12のうち、接合部13を構成するものは、接合電極リード12Aとされている。
接合電極リード12Aの板厚方向の公差を考慮すると、図12に示すように、接合電極リード12Aの前後方向における位置は、幅を有することとなる。以下、接合電極リード12Aが配され得る前後方向における位置の範囲を、正規位置範囲WTとする。なお、以下の説明で参照する図11から図15においては、見易さのために、断面を含む接合部13(接合電極リード12A)、端子30、端子収容部56、ヒンジ部57等について図示し、端部電極リード12Bやバスバー40等の一部の背景については図示を省略する。
図2に示すように、本実施形態の配線モジュール20は、接合電極リード12Aに接続される端子30と、端部電極リード12Bに接続されるバスバー40と、端子30またはバスバー40に接続される電線45と、端子30とバスバー40と電線45とを保持するプロテクタ50と、を備えている。以下では、電池積層体11Lの前側に配される配線モジュール20の構成について詳細に説明する。図4に示すように、電池積層体11Lの後側に配される配線モジュール20は、バスバー40を備えていない点を除き、電池積層体11Lの前側に配される配線モジュール20と同様に構成されている。
図1に示すように、プロテクタ50は、絶縁性の合成樹脂からなり、板状をなしている。プロテクタ50は、筐体14(及び電池積層体11L)に対して位置決めされるプロテクタ本体51を備える。詳細な構成については説明を省略するが、プロテクタ本体51と筐体14とは、組み付け方向にのびるとともに互いに係合する凹凸形状を有しており、電池積層体11Lに対する配線モジュール20の組み付けが案内されるようになっている。
図11に示すように、ヒンジ部57は、プロテクタ本体51から前方に突出する突出片58と、突出片58から組み付け方向の奥方(下方)にのび、端子収容部56に接続される延長片59と、を備える。ヒンジ部57は、端子収容部56と延長片59との結合部分、延長片59と突出片58との結合部分、及び突出片58とプロテクタ本体51との結合部分に、周囲より板厚方向に肉薄化された肉薄部60を備える。肉薄部60は、側方視でU字状をなす溝状に形成され、左右方向にのびている。端子収容部56と延長片59との結合部分、及び延長片59と突出片58との結合部分に設けられた肉薄部60は、第1肉薄部60Aとされている。突出片58とプロテクタ本体51との結合部分に設けられた肉薄部60は、第2肉薄部60Bとされている。第1肉薄部60Aは、第2肉薄部60Bよりもさらに肉薄に形成されている。
図6に示すように、端子収容部56は、ヒンジ部57に結合されるバレル収容凹部61と、組み付け方向における奥方側に配される電極支持片62と、バレル収容凹部61と電極支持片62との間に配される中央枠部63と、を備える。バレル収容凹部61は、組み付け方向にのび、後方に窪んだ門形状をなしている。図5に示すように、バレル収容凹部61には、端子30のワイヤーバレル部35A、インシュレーションバレル部35B、及び電線45の一部が収容されるようになっている。
図11に示すように、電極支持片62は、板状の部材であって、端子30の電極接続部31の後方に配されるようになっている。電極支持片62は、中央枠部63の左右中央部の下端部から下方にのびるとともに、やや前方に傾いている。電極支持片62の下端部には、下方に向かうほど後側に位置するように傾斜する電極支持片側傾斜面62Aが設けられている。図12に示すように、配線モジュール20が電池積層体11Lに組み付けられる際、電極支持片側傾斜面62Aは、正規位置範囲WTの後側部分を含むように配されている。
図5に示すように、中央枠部63の左右両側の下端部には、一対の端子保護アーム67が下方にのびて設けられている。一対の端子保護アーム67は、電極接続部31の左右両側に配されるようになっている。図11に示すように、端子保護アーム67は、接合電極リード12Aに対して前側に配されるとともに、傾斜面32よりも下方にのびている。端子保護アーム67の下端部には、下方に向かうほど前方側に位置するように傾斜する端子保護アーム側傾斜面67Aが設けられている。図12に示すように、配線モジュール20が電池積層体11Lに組み付けられる際、端子保護アーム側傾斜面67Aは、正規位置範囲WTの前側部分を含むように配されている。
図7に示すように、端子30は、導電性の金属板材を加工して設けられている。端子30は、電極接続部31と、電極接続部31の組み付け方向の奥方(下方)に連なって設けられる傾斜面32と、電極接続部31の上端部から後方にのびて設けられる屈曲部33と、を備える。電極接続部31と傾斜面32の間には、下方に向かうにつれて幅狭に形成された台形部38が設けられている。屈曲部33の後端部には、連結部34を介して、電線接続部35が接続されている。電線接続部35は、電線45の芯線46と圧着されるワイヤーバレル部35Aと、電線45の絶縁被覆47と圧着されるインシュレーションバレル部35Bと、から構成されている。
図12に示すように、配線モジュール20において、電極接続部31は電極支持片62の前方に間隔を空けて配されている。前後方向における電極接続部31と電極支持片62との間の最小寸法は、接合部13の板厚寸法と略同一とされている。図11に示すように、配線モジュール20が電池積層体11Lに組み付けられた状態では、接合電極リード12Aが前後方向について電極接続部31と電極支持片62との間に配されるようになっている。電極接続部31は、レーザー溶接により、接合電極リード12Aに電気的に接続される。
図15に示すように、屈曲部33は、上下方向を厚み方向とする板状をなし、接合部13と垂直に配されるようになっている。配線モジュール20において、屈曲部33は、下側当接部64Aと上側当接部64Bとの間に配されている。図7に示すように、屈曲部33の左右両側の前端部には、切り欠き状をなす前方被係止部37が設けられている。図15に示すように、前方被係止部37は、前方係止部66Bと係止するように配されている。図11に示すように、屈曲部33の後端部は、後方被係止部36とされており、後方係止部63Aに当接するように配されている。
図12に示すように、傾斜面32は、下方に向かうほど前側に位置するように傾斜して設けられている。すなわち、傾斜面32は、下方に向かうほど電極支持片62から前後方向について離れるように傾斜している。配線モジュール20が電池積層体11Lに組み付けられる際、傾斜面32は、正規位置範囲WTの前側部分を含むように配されている。
バスバー40は、板状の形状をなし、導電性の金属板材を加工することにより形成されている。図2に示すように、バスバー40は、板厚方向が左右方向となるように、プロテクタ50のバスバー保持部55に保持される。図1に示すように、バスバー40の中央部分は、端部電極リード12Bが接続されるバスバー本体部41となっている。バスバー本体部41と端部電極リード12Bとを接続する際、端部電極リード12Bは、バスバー本体部41に当接するように適宜折り曲げてもよい。バスバー40の上部には、バスバー本体部41に対して左方または右方に折り曲げられたバスバー側接続部42が設けられている。
図3に示すように、電線45は、芯線46(図3及び図7以外では図示省略)と、芯線46を覆う絶縁被覆47と、を有している。図2に示すように、電線45の一方の端部は端子30または中継端子44と接続されており、電線45の他方の端部は一束にまとめられ、コネクタ48に接続されている。電線45は、プロテクタ50の上側に設けられた配索用突起69、電線留め部70、配索用溝71等によりプロテクタ50の所定位置に配索されるようになっている。
実施形態1によれば、以下の作用、効果を奏する。
実施形態1にかかる配線モジュール20は、電極リード12を備えるラミネート型電池11が複数個積層されて構成され、ラミネート型電池11の電極リード12同士が重ね合わせられて接合された接合部13を備える電池積層体11Lに対して、接合部13の板厚方向に直交する組み付け方向に組み付けられる配線モジュール20であって、端子30と、端子30に接続される電線45と、端子30と電線45とを保持するプロテクタ50と、を備え、電極リード12のうち、接合部13を構成するものは、接合電極リード12Aとされており、端子30は、接合電極リード12Aに電気的に接続される電極接続部31を備え、プロテクタ50は、プロテクタ本体51と、端子30を位置決めして収容する端子収容部56と、を備え、端子収容部56は、プロテクタ本体51にヒンジ部57を介して遊動自在に結合されている。
本開示の実施形態2について、図20から図22を参照しつつ説明する。実施形態2にかかる配線モジュール120は、端子収容部56とプロテクタ本体51とを結合するヒンジ部157を除いて、実施形態1の配線モジュール20と同様に構成されている。以下、実施形態1と同一の部材には実施形態1で用いた符号を付し、実施形態1と同一の構成、作用効果については説明を省略する。
実施形態2によれば、以下の作用、効果を奏する。
実施形態2では、ヒンジ部157は、1つの端子収容部56につき、複数設けられている。
(1)上記実施形態では、接合部13は2つの電極リード12が接合されて構成され、ラミネート型電池11は直列接続されていたが、これに限られることはない。接合部は3つ以上の電極リードが接合されて構成され、ラミネート型電池は並列接続されていてもよい。
(2)上記実施形態では、端子収容部56に端子保護アーム67が設けられたが、これに限られることはなく、端子保護アーム67は設けなくてもよい。
(3)実施形態1では、ヒンジ部57は1つの端子収容部56につき1つ設けられ、実施形態2では、ヒンジ部157は1つの端子収容部56につき2つ設けられたが、これに限られることはなく、ヒンジ部は1つの端子収容部につき3つ以上設けられてもよい。また、端子収容部に対するヒンジ部の位置は、任意に変更することができる。
(4)上記実施形態では、電極接続部31と傾斜面32との間に台形部38が設けられたが、これに限られることはなく、台形部は設けられなくてもよい。
11: ラミネート型電池
11L: 電池積層体
12: 電極リード
12A: 接合電極リード
12B: 端部電極リード
12C: 反り部
13: 接合部
14: 筐体
15: 底部
16: 天井部
17: 側方部
20,120: 配線モジュール
30: 端子
31: 電極接続部
32: 傾斜面
33: 屈曲部
34: 連結部
35: 電線接続部
35A: ワイヤーバレル部
35B: インシュレーションバレル部
36: 後方被係止部
37: 前方被係止部
38: 台形部
38A: 外縁部
40: バスバー
41: バスバー本体部
42: バスバー側接続部
42A: ボルト
43: 外部接続端子
44: 中継端子
45: 電線
46: 芯線
47: 絶縁被覆
48: コネクタ
50: プロテクタ
51: プロテクタ本体
54: 電極受け部
54A: 接合電極受け部
54B: 端部電極受け部
55: バスバー保持部
55A: ボルト締結部
56: 端子収容部
57,157: ヒンジ部
58: 突出片
59: 延長片
60: 肉薄部
60A: 第1肉薄部
60B: 第2肉薄部
61: バレル収容凹部
62: 電極支持片
62A: 電極支持片側傾斜面
63: 中央枠部
63A: 後方係止部
64A: 下側当接部
64B: 上側当接部
65: 第1変位抑制部
66: 係止突起
66A: 係合面
66B: 前方係止部
67: 端子保護アーム
67A: 端子保護アーム側傾斜面
68: 第2変位抑制部
69: 配索用突起
70: 電線留め部
71: 配索用溝
D1: 傾斜面の端子幅方向における寸法
D2: 電極接続部の端子幅方向における寸法
D3: 台形部の組み付け方向における奥方側の端部の端子幅方向における寸法
WT: 接合電極リードが配され得る板厚方向における位置の範囲(正規位置範囲)
Claims (8)
- 電極リードを備えるラミネート型電池が複数個積層されて構成され、前記ラミネート型電池の前記電極リード同士が重ね合わせられて接合された接合部を備える電池積層体に対して、前記接合部の板厚方向に直交する組み付け方向に組み付けられる配線モジュールであって、
端子と、
前記端子に接続される電線と、
前記端子と前記電線とを保持するプロテクタと、を備え、
前記電極リードのうち、前記接合部を構成するものは、接合電極リードとされており、
前記端子は、前記接合電極リードに電気的に接続される電極接続部を備え、
前記プロテクタは、プロテクタ本体と、前記端子を位置決めして収容する端子収容部と、を備え、
前記端子収容部は、前記プロテクタ本体にヒンジ部を介して遊動自在に結合されている、配線モジュール。 - 前記ヒンジ部は、複数の肉薄部を備えて構成されている、請求項1に記載の配線モジュール。
- 前記ヒンジ部は、1つの前記端子収容部につき、複数設けられている、請求項1または請求項2に記載の配線モジュール。
- 前記端子は、前記電極接続部に連なって設けられ、前記組み付け方向における奥方に向かうほど前記板厚方向における一方側に位置するように傾斜する傾斜面を備え、
前記傾斜面は、前記接合電極リードが配され得る前記板厚方向における位置の範囲の少なくとも一部を含むように配されている、請求項1または請求項2に記載の配線モジュール。 - 前記端子収容部は、前記板厚方向について前記電極接続部と対向して配される電極支持片を備え、
前記傾斜面は、前記組み付け方向における奥方に向かうほど前記電極支持片から離れるように傾斜しており、
前記接合電極リードが前記板厚方向について前記電極接続部と前記電極支持片との間に配されるようになっている、請求項4に記載の配線モジュール。 - 前記電極支持片の前記組み付け方向における奥方側の端部には、前記組み付け方向における奥方に向かうほど前記板厚方向における他方側に位置するように傾斜する電極支持片側傾斜面が設けられ、
前記電極支持片側傾斜面は、前記接合電極リードが配され得る前記板厚方向における位置の範囲の少なくとも一部を含むように配されている、請求項5に記載の配線モジュール。 - 前記板厚方向及び前記組み付け方向に直交する方向は、端子幅方向とされており、
前記端子収容部は、前記電極接続部の前記端子幅方向における両側に、前記傾斜面より前記組み付け方向における奥方にのびる一対の端子保護アームを備え、
前記一対の端子保護アームは、前記接合電極リードに対して前記板厚方向における一方側に配されるようになっている、請求項6に記載の配線モジュール。 - 前記一対の端子保護アームの前記組み付け方向における奥方側の端部には、前記組み付け方向における奥方に向かうほど前記板厚方向における一方側に位置するように傾斜する端子保護アーム側傾斜面が設けられ、
前記端子保護アーム側傾斜面は、前記接合電極リードが配され得る前記板厚方向における位置の範囲の少なくとも一部を含むように配されている、請求項7に記載の配線モジュール。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380070678.4A CN119923748A (zh) | 2022-10-06 | 2023-10-04 | 配线模块 |
| DE112023004190.3T DE112023004190T5 (de) | 2022-10-06 | 2023-10-04 | Verdrahtungsmodul |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022161666A JP7759304B2 (ja) | 2022-10-06 | 2022-10-06 | 配線モジュール |
| JP2022-161666 | 2022-10-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024075772A1 true WO2024075772A1 (ja) | 2024-04-11 |
Family
ID=90608518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/036203 Ceased WO2024075772A1 (ja) | 2022-10-06 | 2023-10-04 | 配線モジュール |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7759304B2 (ja) |
| CN (1) | CN119923748A (ja) |
| DE (1) | DE112023004190T5 (ja) |
| WO (1) | WO2024075772A1 (ja) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019176584A1 (ja) * | 2018-03-16 | 2019-09-19 | 株式会社オートネットワーク技術研究所 | 接続モジュール、および蓄電モジュール |
| JP2020517077A (ja) * | 2017-11-27 | 2020-06-11 | エルジー・ケム・リミテッド | 接続ボードおよびこれを含む電池モジュール |
| CN213989120U (zh) * | 2020-12-29 | 2021-08-17 | 上海兰钧新能源科技有限公司 | 线束端板及电池模组 |
| WO2022154008A1 (ja) * | 2021-01-15 | 2022-07-21 | 株式会社エンビジョンAescジャパン | 電圧検出装置及び電池モジュール |
| JP2022112716A (ja) * | 2021-01-22 | 2022-08-03 | 株式会社オートネットワーク技術研究所 | 配線モジュール |
-
2022
- 2022-10-06 JP JP2022161666A patent/JP7759304B2/ja active Active
-
2023
- 2023-10-04 CN CN202380070678.4A patent/CN119923748A/zh active Pending
- 2023-10-04 DE DE112023004190.3T patent/DE112023004190T5/de active Pending
- 2023-10-04 WO PCT/JP2023/036203 patent/WO2024075772A1/ja not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020517077A (ja) * | 2017-11-27 | 2020-06-11 | エルジー・ケム・リミテッド | 接続ボードおよびこれを含む電池モジュール |
| WO2019176584A1 (ja) * | 2018-03-16 | 2019-09-19 | 株式会社オートネットワーク技術研究所 | 接続モジュール、および蓄電モジュール |
| CN213989120U (zh) * | 2020-12-29 | 2021-08-17 | 上海兰钧新能源科技有限公司 | 线束端板及电池模组 |
| WO2022154008A1 (ja) * | 2021-01-15 | 2022-07-21 | 株式会社エンビジョンAescジャパン | 電圧検出装置及び電池モジュール |
| JP2022112716A (ja) * | 2021-01-22 | 2022-08-03 | 株式会社オートネットワーク技術研究所 | 配線モジュール |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119923748A (zh) | 2025-05-02 |
| DE112023004190T5 (de) | 2025-08-28 |
| JP7759304B2 (ja) | 2025-10-23 |
| JP2024055063A (ja) | 2024-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018096931A1 (ja) | 配線モジュール | |
| WO2012043486A1 (ja) | セル電圧検出コネクタ | |
| JP6937350B2 (ja) | 蓄電モジュール | |
| WO2022259694A1 (ja) | 端子モジュール及びコネクタ | |
| JP2025530886A (ja) | 配線ユニット | |
| JP7759304B2 (ja) | 配線モジュール | |
| JP7759305B2 (ja) | 配線モジュール | |
| US12394848B2 (en) | Battery module and battery pack including the same | |
| WO2024185893A1 (ja) | 蓄電装置 | |
| JP7778054B2 (ja) | 配線モジュール | |
| JP7800823B2 (ja) | 配線モジュール | |
| JP5673495B2 (ja) | 配線モジュール | |
| JP7544102B2 (ja) | 電池配線モジュール | |
| WO2024075689A1 (ja) | 配線モジュール | |
| US20250316849A1 (en) | Wiring unit | |
| JP7762353B2 (ja) | 配線モジュール | |
| JP7750816B2 (ja) | 配線モジュール | |
| CN114982053B (zh) | 电池模块及包括其的电池组 | |
| US20260018744A1 (en) | Bus bar module | |
| WO2024075688A1 (ja) | 配線モジュール | |
| JP6983185B2 (ja) | 導電モジュール | |
| WO2025204932A1 (ja) | コネクタ装置 | |
| JP2025187626A (ja) | 電池パック | |
| WO2024141060A1 (zh) | 电连接组件、电池组件以及车辆 | |
| JP2022007894A (ja) | 高電圧用コネクタ |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23874898 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380070678.4 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 202380070678.4 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 112023004190 Country of ref document: DE |
|
| WWP | Wipo information: published in national office |
Ref document number: 112023004190 Country of ref document: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 23874898 Country of ref document: EP Kind code of ref document: A1 |