JP2007048799A - Wiring metal fitting, storage element connecting plate and method of using wiring metal fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiring metal fitting which is a constituent member of a storage element connecting plate used for an electric vehicle or a hybrid vehicle, capable of improving the productivity and assembling performance of parts, and to achieve the further thinning of the storage element connecting plate. <P>SOLUTION: A terminal 11 and a plate-like bus bar 12 are integrally formed, and further, a wiring metal fitting 1 is bent and formed so that the bus bar 12 can avoid a communication hole other than a communication hole having the terminal circularly provided thereon and can avoid the bus bar of the wiring metal fitting. If the bus bar 12 has an excessive length, the excessive length is cut as necessary to be used. Further, the wiring metal fittings 1 are arranged in zigzag on front and rear surfaces of a plate body 2 to efficiently utilize a limited space. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is used in, for example, an electric vehicle and a hybrid car, and in a power storage element connection plate for interconnecting a plurality of power storage elements, a wiring fitting, a power storage element connection plate, and a wiring as one constituent member of the power storage element connection plate It relates to how to use the bracket.

  An electric vehicle using an electric motor, a hybrid vehicle using an electric motor and an internal combustion engine in combination, and the like, use a storage element connection plate to electrically connect a plurality of storage elements together.

  According to the shape of the electrode provided on the power storage element, this power storage element connection plate differs in connection means with the electrode.

  For example, the type in which the electrode protrudes from the center of the top surface of the battery cell (storage element), such as the positive electrode of a dry battery, and the thread is threaded on the electrode is provided with a through-hole for communicating the electrode. The battery electrode connection portion and the electrode are connected by tightening the bolt after the electrode is communicated with the through hole using the battery electrode connection portion.

  Further, this type of storage element connection plate is provided with a terminal for voltage check detection between battery cells (storage elements) connected in series. In the case of the above-described storage element connection plate, a voltage check detection terminal is disposed so as to overlap the battery electrode connection part, and is fastened together with the battery electrode connection part by a bolt (see, for example, Patent Document 1).

  This voltage check detection terminal is connected to a voltage detection element appropriately provided in the plate via a lead wire, or several types of shapes are prepared according to the layout of the voltage detection element and connected to the voltage detection element. ing.

  In addition to the above connecting means, there are the following. That is, as shown in FIG. 7, in the case of the electricity storage device B provided with two annular electrodes b <b> 1 and b <b> 2 (no screw portion) protruding so as to be concentric on the top surface, A plurality of annular terminal fittings f1 that can be fitted to the middle annular electrode b1 are provided according to the number of power storage elements, and the middle annular electrode b1 and the terminal fitting f1 are aligned, and then the storage element connection plate F The electrode and the terminal fitting are fitted and connected by pushing.

  Furthermore, a substantially annular voltage check detection terminal f2 is provided on the bottom surface of the storage element connection plate F at a position corresponding to the outer annular electrode b2 protruding from the top surface of the storage element B, and the intermediate annular electrode b1 and the terminal are provided. Simultaneously with the fitting with the metal fitting f1, the terminal f2 for voltage check detection is brought into pressure contact with the outer annular electrode b2. As shown in FIG. 8, a plurality of voltage check detection terminals f2 are soldered via lead wires f3 in which a plurality of wires are covered with a covering material.

In addition, the storage element connecting plate is disposed at the upper part of the storage element as described above, the one disposed at the lower part of the storage element, and when stacking the desired number of storage elements in the vertical direction, Some of them are arranged in the middle, and in any case, the terminals for voltage check detection are provided so as to be in pressure contact with each other. In this case, the voltage check detection terminal is connected to the electronic component or the circuit board by the soldered lead wire.
JP 2004-95380 (3rd page, FIG. 2)

  As described above, the voltage check detection terminal in the conventional storage element connection plate is connected to the voltage detection element appropriately provided in the plate through the lead wire as described above, or according to the layout of the voltage detection element. Since several types of shapes were prepared and connected to the voltage detection element, there were problems in the productivity and assembly of the parts.

  In particular, when a lead wire is used for connection with a terminal, the soldered portion is thickened, the diameter increases to obtain a desired cross-sectional area that can withstand voltage, and a plurality of wires are covered with a covering material. By covering, the diameter is increased, which has been an adverse effect of further thinning the storage element connection plate.

  Therefore, the present invention has been made in view of such a situation, and an object thereof is to provide a wiring fitting, a storage element connection plate, and a wiring fitting using method that can solve the above-described problems.

In order to achieve the above technical problem, the wiring metal fitting, the electricity storage element connection plate, and the wiring metal fitting using method according to the present invention employ the following technical means.
That is, the wiring fitting according to claim 1 is a wiring fitting that is used for a storage element connection plate that interconnects a plurality of storage elements, and that is brought into contact with the electrodes of the storage element to conduct electricity. A terminal portion that is mounted in the communication hole and is abutted with the electrode of the storage element, and a strip-shaped bus bar portion that is connected to the terminal portion and is routed to the plate body. And the bus bar part are integrally formed, and the bus bar part avoids the communication hole other than the communication hole in which the terminal part is mounted, and avoids the bus bar part of the other wiring fitting. It is made to be bent like this.
According to a second aspect of the present invention, in the wiring fitting according to the first aspect, the terminal portion is formed in a substantially annular shape.
The bus bar portion is bent at a plurality of midpoints so as to avoid communication holes arranged in a matrix in the plate body, and is bent toward the lead-out portion of the plate body connected to the outside, and the terminal portion A straight line connecting the centers of the communication holes in which the bus bars are arranged for each connection part from the terminal part toward the lead-out part. It forms so that it may space apart with respect to.
A power storage element connection plate according to claim 3 includes a plurality of wiring fittings according to claim 2 and a plate body in which the communication holes are provided in a matrix, and a plurality of power storage elements are interconnected. In the connection plate, the wiring fitting is arranged such that the extending direction of the bus bar portion and the bending direction of the bent portion are aligned on the surface side of the plate body, and the terminal portions are arranged in a staggered manner in the communication holes. The bus bar portion extending direction and the plate body rear surface side are arranged in the direction opposite to the extending direction of the bus bar portion and the bending direction of the bent portion on the plate main body surface side. The bent portions are aligned so that the terminal portions are arranged in a staggered arrangement in communication holes in which the terminal portions are not mounted.
The wiring metal fitting usage method according to claim 4 is the wiring metal fitting usage method according to claim 2, wherein the bus bar portion protruding from the plate according to the position of the communication hole for mounting the terminal portion. The extra length portion is cut and used.

  According to the present invention, the terminal portion and the strip-shaped bus bar portion are integrally molded, and further formed into a shape that can be accommodated and shared with different positions of the storage elements, and according to the layout of the voltage detection elements. Since it is no longer necessary to prepare several types of wiring fittings, the productivity and assembly of parts can be improved. In addition, by integrally molding the terminal portion and the strip-shaped bus bar portion, it is possible to easily secure a desired cross-sectional area that can withstand a voltage without causing a thickness due to a soldered portion. Further thinning of the connection plate can be achieved.

  Further, by forming the wiring fitting in a shape that can accommodate and share each of the storage elements, it is possible to provide the wiring fitting at a low cost because only one type of mold is required to produce the wiring fitting. .

Next, an embodiment of a storage element connection plate using the wiring fitting according to the present invention will be described.
As shown in FIG. 1, the electricity storage element connection plate according to the present exemplary embodiment is provided with electricity storage elements B arranged in a matrix of two upper and lower stages 3 × 6 across the intermediate plate a2, and the upper electricity storage element B is covered. A plurality of power storage elements B are connected in series with the upper plate a1 disposed to be mounted, the lower plate a3 disposed to cover the lower power storage element B, and the intermediate plate a2. In the power storage device A that is sandwiched as possible, the one applied to the intermediate plate a2 is illustrated. In the figure, reference numeral 1 denotes a wiring fitting, and reference numeral 2 denotes a plate body.

  The power storage element B is a high-capacity capacitor having an external shape formed in a substantially square column shape and having electrodes (positive electrode and negative electrode) on the upper and lower surfaces thereof. Furthermore, this electrode has two annular electrodes (see FIG. 7) formed so as to be concentric, and the middle annular electrode b1 is connected in series with another power storage element B via a plate, The outer annular electrode b2 is connected to a voltage check electronic component via the wiring fitting 1 and the lead-out portion 25, which are the main parts of the present invention.

Hereinafter, the electricity storage element connection plate a2 (intermediate plate) using the wiring fitting 1 which is the main part of the present invention will be described in detail.
The power storage element connection plate a2 according to the present embodiment includes a wiring fitting 1 and a plate body 2.

As shown in FIGS. 2 and 3, the wiring fitting 1 includes a terminal portion 11 and a bus bar portion 12.
The terminal portion 11 is formed with a plate-like member bent in a mountain shape so as to be able to collide with the outer electrode of the electricity storage element B, and has a pair of rectangular shapes on the center line of the substantially annular plate-like member. The locking piece 11a is formed so as to overhang, and is attached to a communication hole 21 provided in the plate body 2 described later.

  The bus bar portion 12 has the same pitch as the arrangement pitch of the communication holes 21 arranged in parallel in the plate body 2 to be described later, and has a plurality of intermediate portions (five locations in FIG. 2) so as to avoid the communication holes 21. The terminal portion 11 is formed in a band plate shape having bent portions 12 a, 12 b, 12 c, 12 d, and 12 e that are bent in a U-shape, and is continuous with the side surface of one locking piece 11 a of the terminal portion 11. And is integrally molded.

  In addition, as shown in FIG. 2, the bus bar portion 12 includes a connecting portion 12j that connects adjacent bent portions 12a to a connecting portion 12h that is continuous with the side surface of one locking piece 11a of the terminal portion 11. , 12k, 12m, 12n, and 12p are formed so as to gradually move toward the bent portion 12a as they move away from the terminal portion 11. That is, as shown in FIG. 2 and FIG. 4, they are separated from a straight line connecting the centers of the communication holes 21 where the bus bars are arranged for each of the connecting portions 12 h going from the terminal portion 11 to the lead-out portion connected to the outside. In addition, as shown in FIG. 3, bent portions 12a are bent in a concave shape with respect to the respective connecting portions 12h.

  As shown in FIG. 3, the bending depth of the bent portions 12a... Gradually decreases as the distance from the terminal portion 11 increases. When the bus bar portion 12 is routed on the plate body 2 described later, the insulating member 3 is bent. The bent portions 12a do not interfere with each other. The connecting portions 12h are formed so as to gradually move toward the bent portions 12a as they are separated from the terminal portion 11, so that the connecting portions 12h do not interfere with each other.

  As shown in FIGS. 4 and 6, the plate body 2 is formed in a substantially rectangular shape in plan view in which communication holes 21 are provided in a 3 × 6 matrix shape as shown in FIGS. 4 and 6, and around each communication hole 21. The ribs 22 are protruded (the portions through which the bus bar portions 12 pass are notched), and the periphery of the communication holes 21 provided in the ribs 22 has a substantially square shape that is one step higher than the inner surface of the ribs 22. A stepped portion 23 is formed so as to protrude.

As shown in FIG. 6, a guide groove 24 having a rectangular cross section for accommodating the bent portions 12 a of the bus bar portion 12 is formed on the top surface of the step portion 23. As shown in FIG. 4, the guide groove 24 is provided only on one side of the plate body 2 in the longitudinal direction with respect to each communication hole 21 (upper side of each communication hole 21 in FIG. 4).
Further, a lead-out portion 25 that is electrically connected to each bus bar portion 12 is provided at the right end portion of the plate body 2 when viewed from the surface side of the plate body 2.

  As shown in FIG. 5, the back surface side of the plate body 2 is provided with ribs 22 projecting around the respective communication holes 21 (not shown where the bus bar portion 12 passes), as in the case of the front surface side described above. In addition, the periphery of the communication hole 21 provided in each of the ribs 22 is projected in a substantially square shape that is one step higher than the inner surface of the rib 22 to form a step portion 23.

  Further, similarly to the front surface side of the plate main body 2, a guide groove 24 having a rectangular cross section for accommodating the bent portion of the bus bar portion 12 is formed on the top surface of the step portion 23 on the back surface side of the plate main body 2. This guide groove 24 is in the longitudinal direction of the plate body 2 opposite to the guide groove 24 provided on the surface side of the plate body 2, the other side surface (the lower side of each communication hole 21 in FIG. 4, Is a bottom view in FIG. 4 and is shown only on the upper side of each communication hole 21).

  Insulating members 3 formed along the guide grooves 24 are inserted into the guide grooves 24 formed on the front and back surfaces of the plate body 2.

  Next, a procedure for assembling the wiring fitting 1 in the electricity storage element connection plate a2 according to the present embodiment configured as described above will be described.

  First, the extra length portion of the bus bar portion 12 protruding from the plate end portion on the lead-out portion 25 side is cut according to the position of the communication hole 21 in which the terminal portion 11 is mounted.

  For example, in FIG. 4, in the case of the wiring fitting 1 to be mounted in the first communication hole 21 at the left end of the plate body 2 farthest from the plate end on the lead-out portion 25 side, there is no extra length of the bus bar portion 12 (this The wiring fitting 1 is formed according to the communication hole 21 at the left end of the plate body 2 farthest from the end of the plate on the lead-out portion 25 side) and used as it is.

  In the case of the wiring fitting 1 to be mounted in the second communication hole 21 on the right side, the bent portion 12e at the right end of the bus bar portion 12 protrudes from the plate end portion on the lead-out portion 25 side, so that the extra length portion is cut.

  Furthermore, in the case of the wiring fitting 1 to be mounted in the third communication hole 21 adjacent to the right, since the second bent portion 12d counting from the right end of the bus bar portion 12 protrudes from the plate end portion on the lead-out portion 25 side, Cut the extra length.

  Thus, according to the position of the communication hole 21 in which the terminal part 11 is mounted, the extra length part of the bus-bar part 12 which protrudes from the plate edge part by the side of the derivation | leading-out part 25 is cut | disconnected, and 18 wiring metal fittings 1 in total. Prepare.

  Then, as shown in FIG. 4, the terminal portions 11 are mounted around the communication holes 21 so as to form a staggered arrangement on the surface side of the plate body 2. At this time, the terminal portion 11 is mounted in each communication hole 21 while the bus bar portion 12 is inserted into the guide groove 24 in order from the left end to the right side of the plate body 2 far from the plate end on the lead-out portion 25 side. However, since the guide groove 24 is shared with the other bus bar portions 12, the insulating member 3 is sandwiched between the bus bar portions 12. In this way, the extending direction of the respective bus bar portions 12 and the bending direction of the bent portions 12a are aligned so that the terminal portions 11 are circularly arranged in the respective communication holes 21 in a staggered arrangement.

  Next, as shown in FIG. 5, with respect to the communication holes 21 that are not mounted on the front surface side of the plate main body 2, the communication holes 21 are arranged in a staggered arrangement from the back surface side of the plate main body 2 in the same manner as described above. Attach the terminal 11 and set the wiring fitting 1.

  Thus, when the setting of the wiring metal fitting 1 is completed on the front surface side and the back surface side of the plate body 2, the end portions of the respective bus bar portions 12 and the lead-out portions 25 are soldered, and a series of assembly is completed.

  The power storage element connection plate a2 assembled as described above is used for the intermediate plate a2 of the power storage device A, and abuts with the annular electrode outside the power storage element B via the wiring fitting 1 and the lead-out portion 25. Connect to electronic components for voltage check.

  As described above, the power storage element connection plate a2 according to the present embodiment is formed by integrally forming the terminal portion 11 and the strip-like bus bar portion 12, and can correspond to and share each of the different placement positions of the power storage elements B. Since the wiring metal fitting 1 formed in a shape is used, it is not necessary to prepare several kinds of wiring metal fittings 1 according to the layout of the voltage detection element, and therefore, the productivity and assemblability of the parts are improved. Can do.

  In addition, by integrally molding the terminal portion 11 and the strip-like bus bar portion 12, it is possible to easily ensure a desired cross-sectional area that can withstand voltage without causing a thickness due to the soldered portion, Further reduction in thickness of the electricity storage element connection plate a2 can be achieved.

Further, since only one type of mold for producing the wiring fitting 1 is required, the wiring fitting 1 can be provided at low cost.
Moreover, since the metal fittings 1 are arranged in a staggered manner on the front surface side and the back surface side of the plate main body 2 and the limited space is effectively used, the storage element connection plate a2 can be reduced in size.

  As mentioned above, although the electrical storage element connection plate a2 using the wiring metal fitting 1 concerning this Embodiment was demonstrated, embodiment mentioned above shows an example of suitable embodiment of this invention, and this invention is The present invention is not limited to this, and various modifications can be made without departing from the scope of the invention.

It is a perspective view of a power storage device. It is a top view of the wiring metal fitting concerning this Embodiment. It is a side view of the wiring metal fitting concerning this Embodiment. It is a top view (surface side) of the electrical storage element connection plate (intermediate plate) incorporating the wiring metal fitting concerning this Embodiment. It is a bottom view (back surface side) of the electrical storage element connection plate (intermediate plate) incorporating the wiring metal fitting concerning this Embodiment. It is sectional drawing which follows the XX line in FIG. It is a longitudinal cross-sectional view of the conventional electrical storage element connection plate (upper plate). It is a perspective view of the conventional wiring metal fitting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wiring metal fitting 11 Terminal part 11a Locking piece 12 Busbar part 12a, 12b, 12c, 12d, 12e Bending part 12h, 12j, 12k, 12m, 12n, 12p Connection part 2 Plate body 21 Communication hole 22 Rib 23 Step part 24 Guide Groove 25 Lead-out part 3 Insulating member B Power storage element A Power storage device a1 Upper plate a2 Power storage element connection plate (intermediate plate)
a3 Lower plate

Claims (4)

It is used for a storage element connection plate that interconnects a plurality of storage elements, and is a wiring fitting that is brought into contact with an electrode of the storage element to conduct electricity,
A terminal part that is mounted in a communication hole provided in the plate body and is brought into contact with the electrode of the electricity storage element; and a strip-like bus bar part that is connected to the terminal part and arranged in the plate body. ,
The terminal portion and the bus bar portion are integrally molded,
The bus bar portion is bent so as to avoid a communication hole other than the communication hole in which the terminal portion is mounted, and to avoid a bus bar portion of the other wiring bracket. . The terminal portion is formed in a substantially annular shape,
The bus bar part is
A plurality of intermediate portions are bent so as to avoid communication holes arranged in a matrix in the plate body, and a bent portion toward the lead-out portion of the plate body connected to the outside,
A connecting portion connecting the bent portion adjacent to the terminal portion and other adjacent bent portions;
2. The wiring according to claim 1, wherein the wiring portion is formed so as to be separated from a straight line connecting the centers of the communication holes in which the bus bars are arranged for each connection portion from the terminal portion toward the lead-out portion. Hardware. A power storage element connection plate comprising a plurality of wiring fittings according to claim 2 and a plate body in which the communication holes are provided in a matrix, and interconnecting a plurality of power storage elements,
The wiring fitting is mounted on the surface of the plate body so that the extending direction of the bus bar portion and the bending direction of the bent portion are aligned, and the terminal portions are arranged in a staggered arrangement in the communication holes, The extending direction of the bus bar part and the bending direction of the bent part are arranged on the back side of the plate body so as to be opposite to the extending direction of the bus bar part and the bent direction of the bent part on the surface side of the plate body. The storage element connection plate is characterized in that the terminal portions are circularly arranged in a staggered arrangement in communication holes where the terminal portions are not circularly arranged.   3. The method of using a wiring fitting according to claim 2, wherein an extra length portion of the bus bar portion protruding from the plate is used in accordance with a position of the communication hole where the terminal portion is mounted. Wiring bracket usage method.

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