WO2013069527A1 - 電池配線モジュール - Google Patents
電池配線モジュール Download PDFInfo
- Publication number
- WO2013069527A1 WO2013069527A1 PCT/JP2012/078295 JP2012078295W WO2013069527A1 WO 2013069527 A1 WO2013069527 A1 WO 2013069527A1 JP 2012078295 W JP2012078295 W JP 2012078295W WO 2013069527 A1 WO2013069527 A1 WO 2013069527A1
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- WO
- WIPO (PCT)
- Prior art keywords
- holding
- bus bar
- connection member
- wiring module
- battery wiring
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/298—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a battery wiring module.
- a plurality of unit cells having positive and negative electrode terminals are arranged side by side.
- a plurality of single cells are electrically connected by connecting a positive electrode terminal (positive electrode terminal) and a negative electrode terminal (negative electrode terminal) with a bus bar.
- a battery wiring module as described in Patent Document 1 is used.
- a plurality of resin connection units each having a bus bar holding portion are connected, and the bus bar is accommodated from above in the bus bar holding portion of each connection unit.
- Each bus bar and the electrode terminal are connected by arranging a connection unit on the terminal forming surface on which is formed.
- connection unit and the electrode terminals of the unit cells constituting the unit cell group are formed during the assembly work to the unit cell group. Due to the collision with the surface or the electrode terminal, the bus bar accommodated in the bus bar holding portion of the connection unit may be pushed up and fall off from the connection unit.
- the present invention has been completed based on the above situation, and an object of the present invention is to provide a battery wiring module that improves the efficiency of the assembly work to the cell group.
- the present invention provides a battery wiring module attached to a unit cell group in which a plurality of unit cells having positive and negative electrode terminals are arranged, and a plurality of connections connected to the electrode terminals. And a resin protector made of an insulating resin having a holding part for holding the connection member, and the connection member is inserted into the holding part of the resin protector along the direction in which the plurality of single cells are arranged. It is characterized in that a connecting member insertion portion is provided.
- the resin protector is provided with a connection member insertion portion for inserting the connection member along the direction in which the plurality of single cells are arranged. That is, the connection member is inserted along the arrangement direction of the cells. Therefore, even if the resin protector collides with the terminal formation surface of the unit cell or the electrode terminal, the connection member is difficult to be pushed up, so that the connection member is prevented from falling off when assembling to the unit cell group. Is done. As a result, according to the present invention, it is possible to provide a battery wiring module in which the efficiency of the assembling work to the cell group is improved.
- the present invention may have the following configurations.
- the resin protector may include a plurality of holding units provided with the holding portion and the connection member insertion portion.
- the unit cell group is constituted by the holding unit in which the connecting member is inserted from the connecting member insertion portion of each holding unit along the arrangement direction of the unit cells and is held by the holding unit. Since preparations may be made according to the number of unit cells, the unit cells can be assembled into a group of unit cells having various configurations.
- a retaining portion for retaining the connection member with respect to the retaining portion may be formed in the retaining portion.
- connection member may be provided with a locked portion that is locked by a locking portion provided in the holding portion.
- the locked portion of the connection member is locked by the locking portion of the holding portion, so that the retaining from the holding portion is surely prevented.
- FIG. 1 is a plan view of a battery module to which the battery wiring module of Embodiment 1 is attached.
- FIG. 2 is a front view of the battery module.
- FIG. 3 is a plan view of the battery module to which the battery wiring module with the first lid portion opened is attached.
- FIG. 4 is a plan view of the holding unit.
- FIG. 5 is an enlarged perspective view of a main part showing an elastic engagement piece (locking portion) of the holding unit.
- FIG. 6 is a perspective view showing a state in which bus bars (connection members) and voltage detection terminals are arranged on the holding unit.
- FIG. 7 is a side view of the holding unit with the first lid portion and the second lid portion opened.
- FIG. 8 is a front view of the holding unit with the first lid portion and the second lid portion opened.
- Embodiment 1 of the present invention will be described with reference to FIGS.
- the battery wiring module 20 according to the present embodiment is attached to a unit cell group 10 in which a plurality of (in the present embodiment, twelve) unit cells 11 having positive and negative electrode terminals 12 are arranged.
- the positive electrode terminal 12 is referred to as a positive electrode terminal 12A
- the negative electrode terminal 12 is referred to as a negative electrode terminal 12B.
- the battery module M formed by attaching the battery wiring module 20 of the present embodiment to the unit cell group 10 is used as a drive source of a vehicle (not shown) such as an electric vehicle or a hybrid vehicle.
- the plurality of single cells 11 constituting the single cell group 10 are connected in series by electrically connecting the positive terminal 12A and the negative terminal 12B of the different single cells 11 with the battery wiring module 20.
- the upper side in FIGS. 2, 7 and 8 is the upper side and the lower side is the lower side.
- the unit cell 11 has a flat rectangular parallelepiped shape. As shown in FIGS. 1 and 2, a positive electrode terminal 12 ⁇ / b> A and a negative electrode terminal 12 ⁇ / b> B are formed on the upper surface 11 ⁇ / b> A of the unit cell 11.
- the electrode terminal 12 includes a pedestal 13A made of a metal plate material, and an electrode post 13B protruding in a round bar shape upward from the pedestal 13A. A screw thread (not shown) is formed on the surface of the electrode post 13B.
- the plurality of single cells 11 are arranged so that the polarities of the electrode terminals 12 of the adjacent single cells 11 are different (so that the positive terminal 12A and the negative terminal 12B are alternately arranged).
- the electrode post 13B is inserted into the through hole 23 of the bus bar 21 (an example of a connection member), and is fixed to the bus bar 21 by screwing of a screw member (not shown).
- the plurality of unit cells 11 are fixed by a holder (not shown) so as to constitute the unit cell group 10.
- the battery wiring module 20 is attached to each of the two rows of electrode terminals 12 arranged in the left-right direction shown in FIG. 1 of the unit cell group 10, but in FIGS. The state which attached the battery wiring module 20 only to the row
- the battery wiring module 20 is connected to the bus bar 21 and a plurality of bus bars 21 having a pair of through-holes 23 (connection portions) inserted and connected to the electrode posts 13B of the positive electrode terminal 12A and the negative electrode terminal 12B of the unit cell 11, respectively. And a plurality of voltage detection terminals 25 for detecting the voltage of the unit cell 11 and a synthetic resin resin protector 30 having a holding portion 32 for holding the bus bar 21.
- the bus bar 21 is formed by pressing a plate material made of metal such as copper, copper alloy, stainless steel, or aluminum into a predetermined shape.
- the surface of the bus bar 21 may be plated with metal such as tin or nickel.
- the dimension of the bus bar 21 in the longitudinal direction is set according to the dimension between the electrode terminals 12A and 12B of the adjacent unit cells 11.
- a pair of through holes 23 are formed in the bus bar 21 at a predetermined interval.
- the electrode posts 13B of the electrode terminals 12 of the unit cells 11 are inserted through the pair of through holes 23, respectively.
- the through holes 23 in the present embodiment have an oval shape in which the arrangement direction of the cells 11 (the left-right direction in FIG. 3) is the longitudinal direction.
- the oval through-hole 23 can absorb the pitch deviation between the adjacent electrode terminals 12A and 12B due to the manufacturing tolerance and assembly tolerance of the unit cell 11.
- the bus bar 21 has a shape in which four corners of a rectangular flat plate are chamfered, and can be smoothly inserted into the holding portion 32 of the resin protector 30.
- a pair of end faces in the longitudinal direction of the bus bar 21 are formed with overhanging portions 22 having a trapezoidal shape as viewed from above, projecting in the width direction (short side direction) of the bus bar 21.
- a recess 24 is formed adjacent to the trapezoidal overhang 22 on the pair of end faces in the longitudinal direction of the bus bar 21.
- the right-side overhang portion 22 ⁇ / b> A is locked by the bus bar locking claw 39 ⁇ / b> D of the holding portion 32 received in the adjacent recess portion 24. (An example of a locked part).
- the voltage detection terminal 25 superimposed on the bus bar 21 includes a flat plate-like main body portion 26A and a barrel portion 26B connected to the main body portion 26A and to which the detection electric wire W is crimped.
- the electrode post 13B of the electrode terminal 12 that is disposed so as to overlap with one of the pair of through holes 23 of the bus bar 21 and is inserted into the one through hole 23 of the bus bar 21 is inserted.
- a possible insertion hole 27 is formed therethrough.
- the insertion hole 27 is formed slightly larger than the through hole 23 of the bus bar 21.
- a protruding piece 28 projecting outward is formed on the edge of the voltage detection terminal 25 where the barrel portion 26B is formed and on the edge facing the edge.
- the right protrusion 28A (first protrusion 28A) in FIG. 4 is locked by the terminal locking claw 39C of the holding portion 32.
- the upward movement of the voltage detection terminal 25 is restricted.
- a recess 29 is formed by a notch between the two projecting pieces 28 formed at the edge on the barrel portion 26B side, and the recess 29 of the voltage detection terminal 25 corresponds to the recess 24 of the corresponding bus bar 21.
- the bus bar locking claw 39D can be received.
- the projecting piece 28 (second projecting piece 28B) formed on the edge facing the edge on the barrel part 26B side is latched by the terminal latching piece 37 of the holding part 32, whereby the voltage detection terminal 25 is moved up and down. Directional movement is restricted.
- the voltage detection terminal 25 is formed by pressing a metal plate material such as copper, copper alloy, stainless steel, or aluminum into a predetermined shape.
- the surface of the voltage detection terminal 25 may be plated with a metal such as tin or nickel.
- the detection electric wire W connected to the voltage detection terminal 25 is accommodated in an electric wire accommodation portion 50 of the resin protector 30 described later, and is connected to a monitoring ECU (not shown) provided on the right side of FIG.
- the monitoring ECU is equipped with a microcomputer, an element, and the like, and has a function for detecting the voltage, current, temperature, etc. of the unit cells 11 and performing monitoring control of each unit cell 11. It is of a known configuration provided.
- the resin protector 30 includes a plurality (five in this embodiment) of holding units 31 connected in the left-right direction.
- the plurality of holding units 31 are arranged along the arrangement direction of the cells 11.
- Adjacent holding units 31 are connected to each other. Details of the connection structure of the holding unit 31 will be described later.
- the holding unit 31 holds and holds the bus bar 21 and the voltage detection terminal 25, a lead-out groove 45 that leads out the detection wire W connected to the voltage detection terminal 25, and a voltage detection that is led out from the lead-out groove 45.
- An electric wire housing portion 50 that houses the detection electric wire W of the terminal 25, a first lid portion 41 that covers the holding portion 32, and a second lid portion 55 that covers the electric wire housing portion 50 are provided. These members are integrally formed. Hereinafter, each member will be described.
- the holding portion 32 opens upward and surrounds and holds three sides other than the left side in FIG. 4 so that the bus bar 21 can be accommodated, and the bus bar 21 is mounted on the holding wall 32.
- a bottom wall 33D is provided.
- the bottom wall 33 ⁇ / b> D is partially provided at a substantially central portion of the holding portion 32, a left end portion in the drawing, and a right end portion in the drawing, and a portion of the bus bar 21 is placed on the bottom wall 33 ⁇ / b> D. It is provided so as not to prevent electrical connection with the electrode terminal 12.
- the height dimension of the surrounding wall 33 is set higher than the upper end of the electrode terminal 12 when the battery wiring module 20 is connected to the unit cell group 10 as shown in FIG. Thereby, it can suppress that a tool etc. contact 12 A of positive electrode terminals and the negative electrode terminal 12B, and the positive electrode terminal 12A and the negative electrode terminal 12B are short-circuited via a tool etc.
- the surrounding wall 33 includes a rear wall 33A arranged along a side edge arranged on the back side in FIG. 4 among a pair of side edges in the longitudinal direction of the bus bar 21, and a pair of side edges in the longitudinal direction of the bus bar 21.
- the front wall 33B arranged along the side edge arranged on the near side in FIG. 4 and the side edge arranged on the right side in FIG. 4 among the pair of side edges in the short side direction of the bus bar 21.
- the right side wall 33C is arranged.
- An opening 333 that divides the front wall 33B into two is provided through the lead-out groove 45 at a substantially central portion in the longitudinal direction of the front wall 33B.
- the right front wall 33B in FIG. 4 is the right front wall 331
- the left front wall 33B in FIG. 4 is the left front wall 332.
- the portion of the pair of side edges in the short side direction of the bus bar 21 where the side edge (left edge 21A) arranged on the left side in FIG. The open end 34 is not formed (see FIGS. 6 and 7). From this open end 34, the bus bar 21 can be inserted in the arrangement direction of the cells 11 (left and right direction in FIG. 4), and functions as a bus bar insertion portion 34 (an example of a connection member insertion portion).
- the right side wall 33 ⁇ / b> C of the surrounding wall 33 functions as an insulating wall 33 ⁇ / b> C that is disposed at the front end portion in the insertion direction of the bus bar 21 and maintains an insulation state with the bus bar 21 held by the adjacent holding unit 31.
- the open end 34 (busbar insertion portion) of the holding portion 32 enters the holding portion 32.
- a guide portion 36 that guides the inserted bus bar 21 forward (insulating wall 33C side) in the insertion direction is formed to protrude.
- a locking piece 37 is formed to protrude.
- the terminal locking piece 37 is formed along the insertion direction of the bus bar 21, and the bus bar 21 and the voltage detection terminal 25 can be arranged below the terminal locking piece 37.
- a locking protrusion 38 is provided at the front end of the terminal locking piece 37 in the insertion direction of the bus bar 21, and the locking protrusion 38 locks the second protrusion 28 ⁇ / b> B of the voltage detection terminal 25. (See FIG. 4).
- the rear wall 33A of the surrounding wall 33 is not formed with a portion such as a slit where the bus bar 21 is exposed to the outside of the holding portion 32, as shown in FIG. Therefore, the rear wall 33A arranged along the arrangement direction of the cells functions as a holding wall that can hold the bus bar 21 without being exposed from the holding portion 32, and is short-circuited by contact with a tool, a surrounding metal member, or the like. Can be prevented.
- the elastic engagement piece 39A is provided with a terminal locking claw 39C for locking the voltage detection terminal 25 and a bus bar locking claw 39D (an example of a locking portion) for locking the bus bar 21 arranged vertically. It has been.
- the bus bar locking claw 39D is provided behind the terminal locking claw 39C in the insertion direction of the bus bar 21 (on the right side in FIG. 5).
- the terminal locking claw 39C and the bus bar locking claw 39D are different from each other. The parts are provided so as to overlap each other.
- the terminal locking claw 39C is elastically deformed in the outward direction of the surrounding wall 33 when the first projecting piece 28A of the voltage detection terminal 25 inserted from above is brought into contact with the terminal locking claw 39C. If it is arranged below the lower end of the elastic member, it will return elastically, so that the upward movement of the voltage detection terminal 25 is restricted.
- the bus bar engaging claw 39D is elastically deformed outwardly of the surrounding wall 33 when the overhanging portion 22A of the bus bar 21 inserted from the open end 34 passes, but when the recessed portion 24 of the bus bar 21 is disposed, It is received in the recess 24 and elastically restored, whereby the bus bar 21 is locked by the bus bar locking claw 39D.
- the recess 29 of the voltage detection terminal 25 disposed immediately above the recess 24 of the bus bar 21 is also locked by the bus bar locking claw 39D.
- First lid portion 41 As shown in FIGS. 1, 3, 4, and 6, the holding portion 32 is integrally provided with a first lid portion 41 via a hinge 40 that extends from the upper end of the rear wall 33 ⁇ / b> A of the surrounding wall 33. .
- the first lid portion 41 is rotatable about the hinge 40 as an axis, and when the first lid portion 41 is closed, the entire holding portion 32 and a part of the lead-out groove 45 are covered ( (See FIG. 1).
- a pair of first locking pieces 42 project from the surface of the first lid portion 41 that is arranged on the lower side when the lid is closed.
- the first locking piece 42 is locked to a first locking groove 46 formed at a position adjacent to second locking grooves 47 (described later) provided on both sides in the width direction of the lead-out groove 45. ing.
- second locking grooves 47 described later
- a lid connecting engagement piece 43 and a lid connecting engaged portion that connect the first lid 41 of the adjacent holding unit 31. 44 are provided.
- the lead-out groove 45 is a member in which the barrel portion 26B of the voltage detection terminal 25 led out from the holding portion 32 and the detection electric wire W crimped to the barrel portion 26B are arranged, and the holding portion 32 and the wire accommodating portion 50 are connected to each other. It is a groove-shaped member that communicates.
- the lead-out groove 45 has a concave shape and is provided in a direction substantially perpendicular to the arrangement direction of the cells 11. Specifically, the lead-out groove 45 is provided so as to penetrate through the opening 52C of the rear-side groove wall 52A (details will be described later) of the holding part 3 wire accommodating part 50 and communicate with the electric wire accommodating part 50.
- the electric wire housing part 50 is configured to have a concave cross section by a pair of groove wall parts 52 extending in the arrangement direction of the cells 11 and a bottom wall part 53 connecting the pair of groove wall parts 52. By connecting the holding units 31 to each other, the electric wire accommodating portion 50 is connected, and one groove (electric wire accommodating groove 51) communicating in the arrangement direction of the cells 11 is formed.
- Each detection electric wire W led out from the lead-out groove 45 of each holding unit 31 is bent at a substantially right angle and is accommodated along the extending direction of the electric wire accommodation portion 50.
- the plurality of detection wires W housed in the wire housing portion 50 are led out to the battery ECU side.
- the groove wall on the lead-out groove 45 side is referred to as a rear groove wall 52A
- the other groove wall is referred to as a front groove wall 52B
- the rear groove wall portion 52A is provided with an opening 52C that divides the rear wall groove wall portion into two, and the lead-out groove 45 penetrates the opening 52C.
- a second lid portion 55 that covers the electric wire housing portion 50 is connected to the front groove wall portion 52 ⁇ / b> B via a hinge 54.
- the electric wire housing part 50 is integrally provided with a second lid part 55 via a hinge 54 that is continuous from the side surface of the front groove wall part 52 ⁇ / b> B.
- the second lid portion 55 is rotatable about the hinge 54 as an axis, and when the second lid portion 55 is closed, the entire wire housing portion 50 is covered (see FIGS. 1 and 3). ).
- the extended lid portion 56 is provided with a pair of second locking pieces 57 for covering the lead-out groove 45 from above and closing the second lid portion 55 when the lid is closed. Is extended.
- the second locking pieces 57 protrude from both side edges in the width direction of the extended lid portion 56.
- the second locking pieces 57 are locked by second locking grooves 47 provided on both sides of the outlet groove 45 in the width direction.
- the lead-out groove 45 is in a state in which the extended lid portion 56 of the second lid portion 55 and the first lid portion 41 are double-capped. As a result, the entire upper area of the holding unit 31 can be maintained in a state covered with the lid portions 41 and 55.
- connection structure of holding unit 31 Next, a connection structure for connecting adjacent holding units 31 will be described. As shown in FIG. 4 and FIG. 6, a connection engagement claw 48 that connects adjacent holding units 31 and a connection engagement claw 48 can be engaged with each other at a position adjacent to the pair of first locking grooves 46. A connecting engagement recess 49 is provided. A coupling engagement claw 48 is provided on the right side of the first locking groove 46 on the right side of the figure (the front side in the insertion direction of the bus bar 21), and a coupling engagement recess 49 is provided on the left side of the first locking groove 46 on the left side of the figure. ing.
- a lid portion coupling portion that couples the first lid portions 41 of the adjacent holding units 31 to each other. 43 and 44 are provided.
- a lid connecting engagement piece 43 is formed at the right end of the first lid 41 in FIG. 4, and a lid connecting engaged portion 44 is provided at the left end of the first lid 41 in FIG. 4. It has been.
- a coupling engagement projection 43A that is engaged with the coupling engagement hole 44B of the lid part coupling engaged part 44 that is the counterpart is formed.
- the lid connection engaged portion 44 is provided adjacent to the engagement piece insertion portion 44A and the engagement piece insertion portion 44A penetrating in the connecting direction of the holding unit 31 so that the lid connection engagement piece 43 can be inserted.
- a coupling engagement hole 44B capable of receiving and engaging the coupling engagement protrusion 43A of the lid coupling engagement piece 43.
- the bus bar 21 is attached to the holding unit 31.
- the bus bar 21 is guided rightward in FIG. 4 by the guide portion 36 formed on the rear wall 33 ⁇ / b> A of the holding portion 32. Is done.
- the bus bar locking claw 39D is bent and deformed in the outward direction of the surrounding wall 33.
- the bus bar locking claw 39D is received in the recessed portion 24 of the bus bar 21, The bus bar locking claw 39D is elastically restored, and the movement of the bus bar 21 in the insertion direction of the bus bar 21 is restricted by the contact between the end surface of the overhang portion 22A of the bus bar 21 and the bus bar locking claw 39D.
- the bus bar 21 is restricted from moving in the vertical direction by the retaining portion 35 provided on the surrounding wall 33 and is prevented from being detached.
- the holding units 31 are connected to each other.
- a pair of elastic pieces 48A of the coupling engagement claw 48 of the holding unit 31 is inserted into the coupling engagement recess 49 of the adjacent holding unit 31 with the first lid 41 and the second lid 55 opened, a pair of The elastic piece 48A is inserted while being elastically deformed in the approaching direction.
- the elastic piece 48A is inserted to a predetermined position in the coupling engagement recess 49, the elastic piece 48A is elastically restored to be engaged, and the holding portion 32 and the electric wire accommodating portion 50 are engaged. Are concatenated.
- the connecting engagement protrusion 43A is inserted into the connecting engagement hole 44B.
- the first lid portions 41 adjacent to each other are connected to each other.
- the insulating walls 33C of the holding units 31 are arranged between the bus bars 21 arranged at adjacent positions. Even if the open end 34 is provided at 32, the bus bars 21 do not contact each other.
- the voltage detection terminal 25 is fitted from above the holding portion 32 onto the bus bar 21 accommodated in the holding portion 32, and the detection electric wire W crimped to the voltage detection terminal 25 from the lead-out groove 45 is accommodated in the electric wire.
- the voltage detection terminal 25 is attached by being led out to the portion 50 (the electric wire receiving groove 51).
- the end of the voltage detection terminal 25 on the barrel portion 25B side is pushed into the holding portion 32 from above. Then, the voltage detection terminal 25 and the terminal locking claw 39C of the elastic engagement piece 39A come into contact with each other, and the terminal locking claw 39C is bent and deformed in the outer direction of the surrounding wall 33.
- the terminal locking claw 39C is elastically restored and the voltage detection terminal 25 is By projecting, the movement of the voltage detection terminal 25 in the vertical direction is restricted.
- the battery wiring module 20 is assembled to the unit cell group 10.
- the unit cell group 10 is prepared by arranging the adjacent electrode terminals 12 of the adjacent unit cells 11 to have different polarities, and the battery wiring module 20 is assembled to the unit cell group 10. Specifically, the electrode terminal 12 (electrode post 13 ⁇ / b> B) of the unit cell 11 is inserted into the through hole 23 of each bus bar 21 and the insertion hole 27 of the voltage detection terminal 25 overlapping with the through hole 23.
- the bus bar 21 is inserted along the arrangement direction of the cells 11, and the bus bar 21 is restricted from moving up and down with respect to the holding unit 32 by the retaining portion 35. Since the resin protector 30 and the electrode post 13B and the upper surface 11A (terminal formation surface) of the battery cell 11 collide with each other, the bus bar 21 is difficult to be pushed up, so that the work can be performed smoothly. Can proceed.
- the through holes 23 or the through holes 23 and the insertion holes 27 are inserted into the electrode posts 13B so that the bus bars 21 are in contact with the bases 13A of the electrode terminals 12, and screw members (not shown) are screwed into the electrode posts 13B. And fix. At this time, since the surrounding wall 33 of the holding unit 31 is formed higher than the electrode post 13B, even if a tool used for screwing the screw member into the electrode post 13B is dropped and contacted, a short circuit occurs. Absent. When the above operation is repeated and the screw member is fixed to the electrode post 13B, the unit cell group 10 can be electrically connected. Next, when the second lid portion 55 and the first lid portion 41 of the battery wiring module 20 are closed in this order, the battery module M is completed.
- the resin protector 30 is provided with a bus bar insertion portion 34 (open end 34) for inserting the bus bar 21 along the arrangement direction of the plurality of single cells 11, and the bus bar 21 is arranged in the arrangement direction of the single cells 11. And the bus bar 21 is held by the retaining portion 35 in a state in which movement of the bus bar 21 is restricted with respect to the holding portion 32 in the vertical direction. Therefore, even if the resin protector 30 collides with the upper surface 11A (terminal forming surface) of the unit cell 11 or the electrode terminal 12, the bus bar 21 is suppressed from above by the retaining portion 35, so that it is difficult to push up. Thus, the bus bar 21 is prevented from falling off during the assembly work to the unit cell group 10. As a result, according to the present embodiment, it is possible to provide the battery wiring module 20 in which the efficiency of the assembling work to the unit cell group 10 is improved.
- the guide portion 36 that guides the bus bar 21 forward in the insertion direction of the bus bar 21 is provided in the holding portion 32, the bus bar 21 insertion operation can be performed smoothly, and the workability is improved. improves.
- the resin protector 30 includes a plurality of holding units 31 provided with the holding portions 32 and the bus bar insertion portions 34, so that the bus bar 21 is simply connected to the bus bar insertion portions 34 of the respective holding units 31. Since the holding units 31 inserted in the arrangement direction of the batteries 11 and held by the holding unit 32 may be prepared according to the number of the cells 11 constituting the cell group 10, various It can assemble
- the insulating wall 33 ⁇ / b> C that holds the insulation state between the bus bar 21 arranged in the adjacent holding unit 31 at the front end in the insertion direction of the bus bar 21 in the holding part 32 of the holding unit 31. Therefore, the insulation state between the bus bars 21 held by the adjacent holding units 31 is held by the insulating wall 33C.
- the bus bar locking claw 39D that locks the bus bar 21 is provided in the holding portion 32, while the locked portion that is locked to the bus bar locking claw 39D is provided in the bus bar 21. It is possible to more reliably prevent 21 from being detached from the holding portion 32.
- the edge part (rear wall 33A) distribute
- maintenance part 32 is made into the holding wall 33A which hold
- the bus bar 21 is not exposed from the edge portion (rear wall 33 ⁇ / b> A) arranged along the arrangement direction of the cells 11 of the holding portion 32, and the conductive property arranged around the holding portion 32. The insulation state between the member and the bus bar 21 can be maintained.
- the present invention is not limited to the embodiments described with reference to the above description and drawings.
- the following embodiments are also included in the technical scope of the present invention.
- the bus bar 21 is inserted along the arrangement direction of the plurality of single cells 11 with a part of the holding portion 32 as an open end 34, but the bus bar is inserted into the wall-shaped portion. It is good also as a bus-bar insertion part by providing the bus-bar insertion port which can be inserted.
- the right side wall 33C disposed at the front end in the bus bar insertion direction of the surrounding wall 33 of the holding portion 32 of the holding unit 31 is the insulating wall 33C. However, the insulating wall is separate from the holding unit.
- the holding part 32 in which a plurality of retaining parts 35 for retaining the bus bar 21 with respect to the retaining part 32 is formed is shown, but only one retaining part may be provided, or the retaining part It may be a holding part which is not provided with.
- the bus bar locking claw 39D for locking the bus bar 21 is provided on the holding portion 32, while the locked portion (dent 24) locked on the bus bar 21 by the bus bar locking claw 39D is provided.
- the holding portion 32 provided with the guide portion 36 for guiding the bus bar 21 forward from the bus bar insertion portion 34 in the insertion direction of the bus bar 21 is shown. However, the holding portion has no guide portion. Also good.
- M Battery module 10 ... Single cell group 11 ... Single cell 11A ... Upper surface (terminal forming surface) 12 ... Electrode terminal 12A ... Positive electrode terminal 12B ... Negative electrode terminal 20 ... Battery wiring module 21 ... Bus bar (connecting member) 22A ... Overhang (locked part) 24 ... Recessed part 30 ... Resin protector 31 ... Holding unit 32 ... Holding part 33 ... Surrounding wall 33A ... Rear wall (holding wall) 33B ... Front wall 33C ... Right side wall (insulating wall) 34 ... Open end (connection member insertion part) 35 ... retaining part 36 ... guide part
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
前記樹脂プロテクタは、前記保持部と、前記接続部材挿入部とを設けた保持ユニットを、複数備えていてもよい。
このような構成とすると、接続部材を各保持ユニットの接続部材挿入部から単電池の並び方向に沿って挿入させて、保持部により保持させた状態とした保持ユニットを、単電池群を構成する単電池の数に合わせて、準備すればよいので、種々の構成の単電池群に組み付けることができる。
保持ユニットに保持される接続部材は、接続部材挿入部においてその一部が露出して保持されることがあるため、隣り合う保持ユニットに保持される接続部材同士の接触が懸念される。そこで、上記のような構成とすると、保持ユニットの保持部における、接続部材挿入方向における前端部に設けられた絶縁壁により、隣り合う保持ユニットに保持される接続部材同士の絶縁状態が保持される。
このような構成とすると接続部材挿入部から挿入された接続部材が保持部に対して抜け止めされるので、接続部材の脱落の発生をより確実に防止することができる。
このような構成とすると接続部材の被係止部が保持部の係止部により係止されるので、保持部からの抜け止めが確実なものとなる。
このような構成とすると、接続部材挿入作業を円滑に行うことができるので、作業性が向上する。
上記のような構成とすると、保持部の単電池の並び方向に沿って配される縁部から接続部材が露出しないので、保持部の周囲に配される導電性部材と接続部材との絶縁状態を保持することができる。
本発明の実施形態1を図1ないし図8を参照しつつ説明する。本実施形態に係る電池配線モジュール20は、正極及び負極の電極端子12を有する複数個(本実施形態では12個)の単電池11を並べてなる単電池群10に取り付けられるものである。以下、正極の電極端子12を正極端子12A、負極の電極端子12を負極端子12Bといい両者を総括するときは電極端子12という。
単電池11は、扁平な直方体形状をなしている。単電池11の上面11Aには、図1および図2に示すように、正極端子12A及び負極端子12Bが形成されている。電極端子12は、金属板材からなる台座13Aと、台座13Aから上方に向かって丸棒状に突出する電極ポスト13Bとを備える。電極ポスト13Bの表面には、図示しないねじ山が形成されている。複数個の単電池11は、隣り合う単電池11の電極端子12の極性が異なるように(正極端子12Aと負極端子12Bとが交互に配されるように)並べられている。電極ポスト13Bはバスバー21(接続部材の一例)の貫通孔23に挿通され、図示しないネジ部材の螺合によりバスバー21に固定されるようになっている。また、これら複数個の単電池11は、単電池群10を構成するように図示しない保持具によって固定されている。
電池用配線モジュール20は、単電池群10の図1に示す左右方向に並ぶ二列の電極端子12の列にそれぞれ取り付けられるが、図1~3においては、二列のうち図1および図3における奥側に並ぶ電極端子12の列のみに電池配線モジュール20を取り付けた状態を示している。
バスバー21は、銅、銅合金、ステンレス鋼、アルミニウム等の金属からなる板材を所定形状にプレス加工してなる。バスバー21の表面には、スズ、ニッケル等に金属がメッキされていてもよい。バスバー21の長手方向(図3および図4における左右方向)の寸法は、隣り合う単電池11の電極端子12A,12B間の寸法に応じて設定される。
バスバー21の上に重ね合わされる電圧検知端子25は、平板状の本体部26Aと、本体部26Aから連なり検知電線Wが圧着されるバレル部26Bを備える。本体部26Aの中心部には、バスバー21の一対の貫通孔23のいずれか一方と重なるように配されて、バスバー21の一方の貫通孔23に挿通される電極端子12の電極ポスト13Bを挿通可能な挿通孔27が貫通して形成されている。挿通孔27は、バスバー21の貫通孔23よりもわずかに大きく形成されている。
樹脂プロテクタ30は、図1に示すように、左右方向に連結された複数(本実施形態では5つ)の保持ユニット31からなる。複数の保持ユニット31は単電池11の並び方向に沿って並べられている。
隣り合う保持ユニット31は、相互に連結されている。保持ユニット31の連結構造の詳細については後述する。
保持部32は、上方に開口すると共に、バスバー21を収容可能に図4における左側方以外の三つの側方を包囲して保持する包囲壁33(33A、33B,33C)と、バスバー21が載置される底壁33Dを備える。
保持部32には、図1、図3、図4および図6に示すように、包囲壁33の後壁33Aの上端から連なるヒンジ40を介して第1蓋部41が一体に設けられている。第1蓋部41は、ヒンジ40を軸中心として回動可能とされ、第1蓋部41を閉じたときに、保持部32全体及び導出溝45の一部が覆われるようになっている(図1を参照)。
導出溝45は、保持部32から導出された電圧検知端子25のバレル部26Bと、バレル部26Bに圧着された検知電線Wが配される部材であり、保持部32と電線収容部50とを連通する溝状の部材である。導出溝45は凹状をなしており、単電池11の並び方向と略垂直な方向に設けられている。詳しくは、導出溝45は、保持部3線収容部50の後側溝壁部52A(詳細は後述)の開口部52Cを貫通して電線収容部50に連通するように設けられている。
電線収容部50は、単電池11の並び方向に延びる一対の溝壁部52および一対の溝壁部52をつなぐ底壁部53によって断面凹状に構成されている。保持ユニット31同士を連結することで、電線収容部50が連結され、単電池11の並び方向に連通する1本の溝(電線収容溝51)が形成される。
電線収容部50には、図1、図3、図6および図7に示すように、前側溝壁部52Bの側面から連なるヒンジ54を介して第2蓋部55が一体に設けられている。第2蓋部55は、ヒンジ54を軸中心として回動可能とされ、第2蓋部55を閉じたときに、電線収容部50全体が覆われるようになっている(図1および図3参照)。第2蓋部55の側縁には、閉蓋時に導出溝45をその上方から覆うとともに、第2蓋部55を係止する一対の第2係止片57が設けられた延出蓋部56が延設されている。第2係止片57は延出蓋部56の幅方向における両側縁から突設されている。第2係止片57は、導出溝45の幅方向両側に設けた第2係止溝47により係止されるようになっている。
次に、隣り合う保持ユニット31同士を連結するための連結構造について説明する。
一対の第1係止溝46と隣接する位置には、図4及び図6に示すように、隣り合う保持ユニット31同士を連結する連結係合爪48と、連結係合爪48と係合可能な連結係合凹部49が設けられている。図示右側(バスバー21挿入方向の前方側)の第1係止溝46の右側に連結係合爪48が設けられ、図示左側の第1係止溝46の左側に連結係合凹部49が設けられている。
次に電池配線モジュール20の組み付け方法について説明する。
まず、保持ユニット31にバスバー21を取り付ける。保持ユニット31の保持部32の開放端34からバスバー21を保持部32内に差し込むと、バスバー21は、保持部32の後壁33Aに形成されたガイド部36により、図4における右方向に案内される。バスバー21の張出部22Aと前壁33Bに形成されたバスバー係止爪39Dとが当接すると、バスバー係止爪39Dが包囲壁33の外側方向に撓み変形する。
すべての電圧検知端子の取付作業が終了したら電池配線モジュール20が完成する。
以下、本実施形態の作用および効果について説明する。
本実施形態においては、樹脂プロテクタ30に、バスバー21を複数の単電池11の並び方向に沿って挿入するバスバー挿入部34(開放端34)を設けており、バスバー21が単電池11の並び方向に沿って挿入され、かつ、抜け止め部35によりバスバー21が保持部32に対して上下方向に移動を規制された状態で保持される。したがって、樹脂プロテクタ30と、単電池11の上面11A(端子形成面)や電極端子12とが衝突したとしても、バスバー21は抜け止め部35により上方から抑えられているので、突き上げられにくくなっており、単電池群10への組み付け作業の際にバスバー21の脱落が防止される。その結果、本実施形態によれば、単電池群10への組み付け作業の効率を向上した電池配線モジュール20を提供することができる。
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。
(1)上記実施形態では、保持部32の一部を開放端34としてバスバー21を複数の単電池11の並び方向に沿って挿入するバスバー挿入部34としたが、壁状の部分にバスバーを挿入可能なバスバー挿入口を設けてバスバー挿入部としてもよい。
(2)上記実施形態では保持ユニット31の保持部32の包囲壁33のうちバスバー挿入方向における前端部に配される右側壁33Cを絶縁壁33Cとしたが、保持ユニットとは別体の絶縁壁を備えていてもよいし、絶縁壁がない構成であってもよい。
(3)上記実施形態では、バスバー21を保持部32に対して抜け止めする抜け止め部35を複数形成した保持部32を示したが、抜け止め部は1つだけでもよいし、抜け止め部を備えない保持部であってもよい。
(4)上記実施形態では、保持部32にバスバー21を係止するバスバー係止爪39Dを設ける一方、バスバー21にバスバー係止爪39Dに係止される被係止部(凹み部24)を設けたものを示したが、保持部に凹み形状のバスバーを係止部を設け、バスバーに凸状の被係止部を設けてもよい。
(5)上記実施形態では、バスバー21を、バスバー挿入部34からバスバー21の挿入方向における前方に案内するガイド部36を設けた保持部32を示したが、保持部にはガイド部がなくてもよい。
(6)上記実施形態では、複数の単電池11の並び方向に沿って配される縁部に、バスバーを非露出状態で保持する保持壁を設けた保持部32を示したが、保持部とは別体の保持壁を備えていてもよい。
10...単電池群
11...単電池
11A...上面(端子形成面)
12...電極端子
12A...正極端子
12B...負極端子
20...電池配線モジュール
21...バスバー(接続部材)
22A...張出部(被係止部)
24...凹み部
30...樹脂プロテクタ
31...保持ユニット
32...保持部
33...包囲壁
33A...後壁(保持壁)
33B...前壁
33C...右側壁(絶縁壁)
34...開放端(接続部材挿入部)
35...抜け止め部
36...ガイド部
Claims (7)
- 正極及び負極の電極端子を有する単電池を複数個並べてなる単電池群に取り付けられる電池配線モジュールであって、
前記電極端子に接続される複数の接続部材と、前記接続部材を保持する保持部を有する絶縁樹脂製の樹脂プロテクタと、を備え、
前記樹脂プロテクタの前記保持部に、前記接続部材を複数の前記単電池の並び方向に沿って挿入する接続部材挿入部を設けたことを特徴とする電池配線モジュール。 - 前記樹脂プロテクタは、前記保持部と、前記接続部材挿入部とを設けた保持ユニットを、複数備えることを特徴とする請求項1に記載の電池配線モジュール。
池配線モジュール。 - 前記保持ユニットの前記保持部における、前記接続部材の挿入方向における前端部に、隣り合う前記保持ユニットに配される接続部材との絶縁状態を保持する絶縁壁を設けたことを特徴とする請求項2に記載の電池配線モジュール。
- 前記保持部に、前記接続部材を前記保持部に対して抜け止めする抜け止め部を形成したことを特徴とする請求項1ないし請求項3のいずれか一項に記載の電池配線モジュール。
- 前記保持部に前記接続部材を係止する係止部を設ける一方、前記接続部材に前記保持部に設けた係止部に係止される被係止部を設けたことを特徴とする請求項1ないし請求項4のいずれか一項に記載の電池配線モジュール。
- 前記保持部に、前記接続部材を、前記接続部材挿入部から前記接続部材の挿入方向における前方に案内するガイド部を設けたことを特徴とする請求項1ないし請求項5のいずれか一項に記載の電池配線モジュール。
- 前記保持部の、前記複数の単電池の並び方向に沿って配される縁部に、前記接続部材を前記保持部から露出しないように保持可能な保持壁を設けたことを特徴とする請求項1ないし請求項6のいずれか一項に記載の電池配線モジュール。
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- 2011-11-11 JP JP2011247493A patent/JP5772524B2/ja active Active
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2012
- 2012-11-01 CN CN201280055191.0A patent/CN103947005B/zh active Active
- 2012-11-01 DE DE112012004687.0T patent/DE112012004687B4/de active Active
- 2012-11-01 US US14/356,972 patent/US20140329136A1/en not_active Abandoned
- 2012-11-01 WO PCT/JP2012/078295 patent/WO2013069527A1/ja active Application Filing
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JP2009016336A (ja) * | 2007-06-06 | 2009-01-22 | Panasonic Corp | 電池構造体 |
JP2011008957A (ja) * | 2009-06-23 | 2011-01-13 | Autonetworks Technologies Ltd | 電池接続アセンブリ |
JP2011049047A (ja) * | 2009-08-27 | 2011-03-10 | Autonetworks Technologies Ltd | 電池接続アセンブリ |
JP2011077031A (ja) * | 2009-09-07 | 2011-04-14 | Yazaki Corp | バスバモジュール、及び、このバスバモジュールを備えた電源装置 |
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WO2014203713A1 (ja) * | 2013-06-18 | 2014-12-24 | 住友電装株式会社 | 配線モジュール |
US9825272B2 (en) | 2013-06-18 | 2017-11-21 | Sumitomo Wiring Systems, Ltd. | Wiring module |
CN112751144A (zh) * | 2015-01-05 | 2021-05-04 | Cps 科技控股有限公司 | 用于蓄电池模块的汇流条桥的卡扣式延伸部和引导壁 |
CN112751144B (zh) * | 2015-01-05 | 2024-03-22 | Cps 科技控股有限公司 | 用于蓄电池模块的汇流条桥的卡扣式延伸部和引导壁 |
Also Published As
Publication number | Publication date |
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DE112012004687T5 (de) | 2014-08-21 |
DE112012004687B4 (de) | 2021-06-10 |
JP2013105572A (ja) | 2013-05-30 |
JP5772524B2 (ja) | 2015-09-02 |
US20140329136A1 (en) | 2014-11-06 |
CN103947005B (zh) | 2016-06-01 |
CN103947005A (zh) | 2014-07-23 |
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