JP2007048498A - Power storage element connection plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power storage element connection plate used for an electric automobile using an electric motor or a hybrid automobile using the electric motor in combination with an internal combustion engine, preventing itself from intrusion of water leaked through a connector as a part connecting to external part, taking productivity into consideration. <P>SOLUTION: The power storage element connection plate 1a is constituted by integrally molding an almost cylindrical connector housing 21 having a rectangular hole 21a with a plate main body 1, loosely inserting one end of a connection terminal 23 into the rectangular hole 21a, inserting a retainer 25 into the connector housing 21 to fix the connection terminal 23, connecting the other end of the connection terminal 23 to an electronic circuit base board 4, winding a sealing member 51 around the plate main body 1, and by mounting a cover 5 on the plate main body 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a storage element connection plate that is used in, for example, an electric vehicle or a hybrid car and interconnects a plurality of storage elements.

  An electric vehicle using an electric motor, a hybrid vehicle using both an electric motor and an internal combustion engine, etc. use a power storage element connection plate to electrically connect a plurality of power storage elements at once (for example, Patent Documents). 1).

  There are several types of storage element connection plates of this type, such as connection means with electrodes provided on the storage element, and support means for an electronic circuit board on which necessary circuits such as voltage check and abnormality detection are mounted. . In particular, as a means for supporting the electronic circuit board, for example, as shown in FIG. 5, the electronic circuit board is separated from the wiring member f1 such as a bus bar arranged in the recess on the upper surface of the plate body (to obtain a required insulation distance). There is one in which an electronic circuit board f3 is supported at the end of the plate body f2.

Further, a connector f4 which is a connection portion with the outside is fixed to the upper surface of the electronic circuit board f3. The connector f4 has a terminal f5 that is bent at approximately 90 degrees protruding from the midway portion. The terminal f5 is inserted into a connection hole f6 provided in the electronic circuit board f3, and then the electronic circuit board f3. By soldering to the upper surface of the end, it is fixed to the upper surface of the electronic circuit board f3. (See FIG. 5 and Patent Document 2).
JP 2004-95380 (3rd page, FIG. 2) JP 2004-319338 (3rd page, FIG. 1)

  By the way, since this kind of electrical storage element connection plate used for an electric vehicle or a hybrid car is used in various natural environments, the above-described waterproof treatment for the electronic circuit board is indispensable.

  However, conventionally, since the connector and the electronic circuit board are directly connected, water may leak into the electricity storage element connection plate from a slight gap between the connector and the electronic circuit board.

  Therefore, the present inventors conceived that the connector is integrally formed with the storage element connection plate, however, it is technically difficult to previously incorporate the terminal into the connector, as in the prior art, It has become necessary to know that the economy is lacking and to take simple measures separately.

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

In order to achieve the above technical problem, the storage element connecting plate according to the present invention has taken the following technical means.
That is, the electricity storage element connection plate according to claim 1 is an electricity storage element connection plate that interconnects a plurality of electricity storage elements, and a plate body that supports an electronic circuit board on which a required electronic circuit is mounted; A substantially cylindrical connector housing formed integrally with the plate body and having a communication hole, and a connection terminal having one end fixed to the electronic circuit board and the other end inserted into the communication hole and connected to the outside And a retainer that is inserted into the connector housing and fixedly supports the connection terminal in the connector housing.
According to a second aspect of the present invention, there is provided the storage element connecting plate according to the first aspect, wherein the electronic circuit board is supported so that the plate main body is substantially parallel to the electronic circuit board and is separated from the plate main body. In addition, a rib-like abutting portion is erected, and the connecting terminal is bent at a midway portion to form a bent portion, and the bent portion is abutted against the abutting portion to connect the connecting terminal. One end is guided in the protruding portion protruding direction, and one end of the connection terminal is fixed to the electronic circuit board positioned in the protruding direction.
According to a third aspect of the present invention, there is provided a storage element connecting plate according to the second aspect, further comprising: a holder having a substantially L-shaped cross-sectional view that covers the bent portion abutted against the abutting portion from above; The connection terminal is held by abutting the bent portion on the corner portion.
According to a fourth aspect of the present invention, in the storage element connecting plate according to the third aspect, a guide groove for guiding the connection terminal that abuts against the corner portion is formed on the upper surface of the holder.
According to a fifth aspect of the present invention, in the power storage device connecting plate according to the third or fourth aspect, the holder is held by the retainer and the abutting portion.

  According to the present invention, a substantially cylindrical connector housing having a communication hole is integrally formed with the plate body, one end of the connection terminal is loosely inserted into the communication hole, and a retainer is inserted into the connector housing for connection. Since the terminal is fixedly supported and the other end of the connection terminal is connected to the electronic circuit board, there is no risk of water leaking to the electronic circuit board side, and at the same time, the connector (with a connector housing and connection terminal is provided with simple means. Can be assembled).

Next, an embodiment of the electricity storage element connection plate 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 in a possible manner, the one applied to the upper plate a1 is illustrated. In the figure, reference numeral 1 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. Further, this electrode has two annular electrodes b1 and b2 protruding so as to be concentric, and the middle annular electrode b1 is connected in series with another power storage element B via a wiring portion, The annular electrode b2 is connected to an electronic component via a voltage check terminal.

Hereinafter, the power storage element connection plate a1 (upper plate) which is a main part of the present invention will be described in detail.
The power storage element connection plate a1 according to the present embodiment includes a plate body 1, a connector part 2, a wiring part 3, an electronic circuit board 4, and a cover 5.

  As shown in FIGS. 2 and 3, the plate body 1 is formed in a substantially rectangular shape in plan view with a concave upper surface, and is a rectangle into which the body portion of the power storage element B formed in a substantially quadrangular prism shape is inserted. The concave portion 11 is formed on the bottom surface so as to form a 3 × 6 matrix, and a communication hole 12 communicating with the upper surface is provided at the center of the rectangular concave portion 11.

  The connector part 2 includes a connector housing 21, a contact part 22, a connection terminal 23, a holder 24, and a retainer 25.

  The connector housing 21 is formed in a substantially cylindrical shape in which rectangular holes 21 a (communication holes) are communicated in the same direction as the extending direction of the plate body 1, and is integrally formed with the plate body 1 at the end of the plate body 1. . As shown in FIG. 2, the rectangular hole 21 a is formed with a stepped portion 21 b whose diameter is reduced from a midway toward the plate body 1.

  The abutting portion 22 is formed in a rib shape that abuts a connection terminal 23 to be described later and guides it upward, and is erected on the upper surface of the plate body 1 near the end of the connector housing 21 on the plate body 1 side. Further, a first guide for guiding the connection terminal 23 on the side wall surface of the abutting portion 22 (the side wall surface in contact with the connection terminal 23) and the upper surface of the plate body 1 continuous with the abutting portion 22 side wall surface. A groove 22a is formed.

  The connection terminal 23 is a linear member having a bent portion 23a formed by bending a midway portion so as to be substantially L-shaped, and is arranged to be guided by the first guide groove 22a. One end of the connection terminal 23 is guided upward by the bent portion 23 a being abutted against the abutting portion 22, and soldered to the electronic circuit board 4 positioned above the abutting portion 22. The other end of 23 is loosely inserted into the rectangular hole 21a. The connection terminals 23 are also arranged on the upper surface of a holder 24, which will be described later, and are arranged in two stages in the vertical direction.

  The holder 24 is a substantially L-shaped member in cross-section in which a second guide groove 24a for guiding the connection terminal 23 is formed on the upper surface. The holder 24 abuts on the connection terminal 23 guided by the first guide groove 22a. It arrange | positions so that the bending part 23a abutted on the part 22 may be covered.

  Further, as described above, the connection terminal 23 engaged with the second guide groove 24a is disposed on the upper surface of the holder 24. Similar to the connection terminal 23 guided by the first guide groove 22a, the connection terminal 23 is guided upward and soldered to the electronic circuit board 4 positioned above the corner portion 24b of the holder. The other end is loosely inserted into the rectangular hole 21a.

  The retainer 25 is a substantially T-shaped member in cross-sectional view formed so as to be able to be engaged with the step portion 21b formed in the rectangular hole 21a and to be inserted into the rectangular hole 21a, and communicates with the longitudinal direction of the retainer 25. The connecting terminal insertion hole 25a is provided. As shown in FIG. 2, the retainer 25 is inserted into the connector housing 21 and fixedly supports the connection terminal 23 in the connector housing 21.

  The wiring portion 3 is composed of a strip-like bus bar that is routed along the upper surface of the plate body 1 between the two communication holes 12 with two adjacent communication holes 12 as a set (a total of nine sets). A wiring member 31, and an annular electrode b 1 that is suspended from the bottom surfaces of both ends of the wiring member 31 so as to be mounted in the communication hole 12 and a terminal metal fitting 32 that can be fitted and removed, are provided. Become. The terminal fitting 32 has a plurality of claws arranged in an annular shape, and the annular electrode b1 on the inner side of the storage element B is inserted into the claws to be electrically connected. Yes. An insulating plate 6 is disposed on the wiring portion 3.

  The electronic circuit board 4 is mounted with necessary circuits such as voltage check and abnormality detection. The electronic circuit board 4 is supported so that each corner portion is screwed to a mounting boss (not shown) whose rear surface protrudes from the upper surface of the plate body 1 and is separated from the wiring portion 3. . In addition, the tip of the connection terminal 23 is inserted into the insertion hole 41 provided in the electronic circuit board 4 and soldered.

  The cover 5 is formed in a substantially convex shape with a thin plate member so that the upper surface of the plate body 1 can be mounted, and the cover 5 end portion and the plate body 1 end portion are screwed together and fixed to the plate body 1. Yes. Further, a seal member 51 pressed against the end of the cover 5 is provided around the end of the plate body 1 inside the screwed portion to prevent water leakage into the electricity storage device connection plate a1.

  In the electricity storage device connection plate a1 according to the present embodiment configured as described above, first, the connection terminal 23 is inserted from above the plate body 1 so that the other end of the connection terminal 23 is positioned in the rectangular hole 21a. The lower connection terminal 23 is set in the first guide groove 22a so that the bent portion 23a abuts the abutting portion 22.

  Next, the holder 24 is set so as to cover the bent portion 23a abutted against the abutting portion 22 from above the connection terminal 23 guided by the first guide groove 22a. The connection terminal 23 is inserted from above the plate body 1 so that the other end of the connection terminal 23 is located in 21a, and the upper connection terminal 23 is inserted into the second guide groove 24a so that the bent portion 23a abuts the corner portion 24b. Set.

  Next, the retainer 25 is inserted into the rectangular hole 21a until it hits the stepped portion 21b formed in the rectangular hole 21a. At this time, the connection terminal 23 (upper and lower stages) in the rectangular hole 21 a is inserted into the connection terminal insertion hole 25 a and fixedly supported by the retainer 25.

  Next, the tip of the connection terminal 23 protruding upward and the insertion hole 41 provided in the electronic circuit board 4 are aligned, and after the alignment, the tip of the connection terminal 23 is inserted into the insertion hole 41, The electronic circuit board 4 is placed on a mounting boss that protrudes from the upper surface of the plate body 1. Then, the electronic circuit board 4 is screwed and fixed to the mounting boss.

  When the fixing of the electronic circuit board 4 is completed, the tip of the connection terminal 23 protruding from the upper surface of the electronic circuit board 4 is soldered to the electronic circuit board 4, and the seal member 51 is mounted on the plate main body 1. A cover 5 is screwed onto 1 to complete a series of assembly.

  As described above, in the electricity storage device connection plate a1 according to the present embodiment, the substantially cylindrical connector housing 21 in which the rectangular hole 21a is formed is integrally formed with the plate body 1, and one end of the connection terminal 23 is formed in the rectangular hole 21a. And the retainer 25 is inserted into the connector housing 21 to fix and support the connection terminal 23, the other end of the connection terminal 23 is connected to the electronic circuit board 4, and the seal member 51 is mounted on the plate body 1. Since the cover 5 is fixed to the plate body 1, the possibility of water leakage to the electronic circuit board 4 side can be completely eliminated. In addition, the electricity storage element connection plate a1 according to the present embodiment is extremely suitable for assembling a connector with simple means.

  As mentioned above, although the electrical storage element connection plate a1 concerning this Embodiment was demonstrated, embodiment mentioned above shows an example of suitable embodiment of this invention, and this invention is not limited to it. However, various modifications can be made without departing from the scope of the invention.

  For example, the power storage element connection plate a1 according to the present embodiment has the connection terminals 23 arranged in parallel in two stages in the vertical direction via the holder 24, but may have a plurality of stages such as three or four stages. On the contrary, when the connection terminal 23 has one stage, the holder 24 is not required as shown in FIG.

It is a perspective view of the electrical storage apparatus to which the electrical storage element connection plate concerning this Embodiment is applied. It is a partial expanded sectional view which follows the XX line in FIG. It is a perspective view of the principal part. It is the partial expanded sectional view which showed the other aspect of the principal part. It is a partial expanded sectional view of the conventional electrical storage element connection plate.

Explanation of symbols

A Power storage device a1 Power storage element connection plate (upper plate)
a2 Intermediate plate a3 Lower plate B Power storage element b1 Middle annular electrode b2 Outside annular electrode 1 Plate body 11 Rectangular recess 12 Communication hole 2 Connector part 21 Connector housing 21a Rectangular hole 21b Step part 22 Abutting part 22a First guide groove 23 connection terminal 23a bent part 24 holder 24a second guide groove 24b corner part 25 retainer 25a connection terminal insertion hole 3 wiring part 31 wiring member 32 terminal fitting 4 electronic circuit board 41 insertion hole 5 cover 51 sealing member 6 insulating plate

Claims (5)

A storage element connection plate for interconnecting a plurality of storage elements,
A plate body supporting an electronic circuit board on which a required electronic circuit is mounted;
A substantially cylindrical connector housing formed integrally with the plate body and having a communication hole;
One end is fixed to the electronic circuit board and the other end is inserted into the communication hole and connected to the outside, and
An electrical storage element connection plate, comprising: a retainer inserted into the connector housing and fixedly supporting the connection terminal in the connector housing. The plate main body is substantially parallel to the electronic circuit board and supports the electronic circuit board so as to be separated from the plate main body, and a rib-like abutting portion is erected,
The connecting terminal is bent at a midway portion to form a bent portion, the bent portion is abutted against the abutting portion, and one end of the connecting terminal is guided in the abutting portion protruding direction, The storage element connection plate according to claim 1, wherein one end of the connection terminal is fixed to the electronic circuit board located in the protruding direction.   A holder having a substantially L-shaped cross-sectional view for covering the bent portion abutted against the abutting portion from above is provided, and the connecting terminal is abutted against the corner portion of the upper surface of the holder. The electricity storage element connection plate according to claim 2, wherein the electricity storage element connection plate is held.   The electricity storage element connection plate according to claim 3, wherein a guide groove that guides the connection terminal that abuts against the corner portion is formed on the upper surface of the holder. The storage element connection plate according to claim 3 or 4, wherein the holder is held by the retainer and the abutting portion.

Images