JP2015005473A - Bus bar and manufacturing method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bus bar which improves work safety in a device where hot-line work is conducted, and to provide a manufacturing method of the bus bar.SOLUTION: A bus bar 101 is used for a device where hot-line work is conducted and includes: a base part 21 having a center part 31 formed by an insulator and multiple end parts 32A, 32B formed by a conductive metal; and a connection part 22 having a metal part formed by a conductive metal. In a state where the connection part 22 contacts with the base part 21, the end parts 32A, 32B are electrically connected through the connection part 22. In a state where the connection part 22 does not contact with the base part 21, the end parts 32A, 32B are electrically insulated from each other by the center part 31.

Description

  The present invention relates to a bus bar and a bus bar manufacturing method, and more particularly to a bus bar and a bus bar manufacturing method used in an apparatus in which a hot-line operation is performed.

  Conventionally, bus bars have been used as connecting devices for connecting terminals of a plurality of batteries in series or in parallel. As such a bus bar, for example, in order to make a fixed connection between the terminals, a through hole that fits the negative and anode column terminals at both ends of the conductive connecting rod body, and an intermediate portion between these through holes. A longitudinal intermediate opening that communicates with the front and rear wall surfaces of the main body, and a longitudinal annular connecting rod that is provided with bolt insertion holes in the front and rear side walls that are opposed to each other through the longitudinal intermediate opening. A bolt and a nut inserted through the bolt insertion hole are known (see, for example, Japanese Patent Laid-Open No. 9-90881 (Patent Document 1)).

JP-A-9-190811 Japanese Patent No. 3343888 JP 2009-231145 A Japanese Patent No. 3785499 International Publication No. WO2010 / 052788

  However, in the bus bar described in Patent Document 1, there is a possibility that an operator may touch the conductive part of the bus bar when connecting the terminals. In this case, a voltage is applied to the conductive part. There was a problem that there was a possibility of electric shock.

  This invention was made in order to solve the above-mentioned subject, The objective is providing the bus bar which can improve the safety | security of the operation | work in the apparatus in which a hot-wire operation is performed, and the manufacturing method of the said bus bar. That is.

  (1) In order to solve the above-mentioned problems, a bus bar according to an aspect of the present invention is a bus bar used in an apparatus in which a hot wire operation is performed, and includes a central portion made of an insulator and a conductive metal. A base portion having a plurality of end portions, and a connection portion having a metal portion made of a conductive metal, and in a state in which the connection portion is in contact with the base portion, the end portions are interposed via the connection portion. The ends are electrically insulated by the central portion in a state in which the end portions are electrically connected to each other and the connection portion is not in contact with the base portion.

  (18) In order to solve the above-described problem, a bus bar manufacturing method according to an aspect of the present invention is a bus bar manufacturing method used in an apparatus in which a hot wire operation is performed, and the bus bar is made of an insulator. A central portion, and a base portion having a plurality of end portions made of a conductive metal, and a connection portion for electrically connecting the end portions of the base portion through a metal portion made of a conductive metal, A step of installing the end portion in a mold; and injecting an insulating resin, which is a material of the center portion, into the mold in which the end portion is disposed, so that a plurality of the end portions are formed in the center portion. Forming the base portion connected to the base plate.

  ADVANTAGE OF THE INVENTION According to this invention, the safety | security of the operation | work in the apparatus with which a hot-line operation | work is performed can be improved.

FIG. 1 is a diagram showing a configuration of a storage battery panel including a bus bar according to the first embodiment of the present invention. FIG. 2 is an exploded perspective view showing the configuration of the bus bar according to the first embodiment of the present invention. FIG. 3 is a plan view of the bus bar shown in FIG. FIG. 4 is a side view of the bus bar shown in FIG. FIG. 5 is an exploded perspective view showing the configuration of the bus bar according to the second embodiment of the present invention. FIG. 6 is a rear view of the connecting portion of the bus bar shown in FIG. FIG. 7 is a diagram illustrating a configuration of a bus bar according to a modification of the second embodiment of the present invention. FIG. 8 is a perspective view showing the configuration of the bus bar according to the third embodiment of the present invention. FIG. 9 is a diagram illustrating a state in which the storage batteries are connected to each other using a bus bar in which a fuse is attached to the fuse holder illustrated in FIG. 8. FIG. 10 is a perspective view showing the configuration of the bus bar according to the fourth embodiment of the present invention. FIG. 11 is a perspective view showing a configuration of a bus bar according to the fifth embodiment of the present invention. FIG. 12: is a perspective view which shows the structure of the bus bar which concerns on the modification 1 of the 5th Embodiment of this invention. FIG. 13 is a perspective view showing the configuration of the end of the base portion of the bus bar shown in FIG. FIG. 14 is a side view of the end shown in FIG. FIG. 15 is a perspective view showing another configuration of the end portion of the base portion of the bus bar shown in FIG. 16 is a side view of the end portion shown in FIG. FIG. 17 is a perspective view showing the configuration of the bus bar according to the second modification of the fifth embodiment of the present invention. FIG. 18 is an exploded perspective view showing the configuration of the bus bar according to the sixth embodiment of the present invention. 19 is a perspective view of the bus bar shown in FIG. 20 is a plan view of the bus bar shown in FIG. FIG. 21 is a side view of the bus bar shown in FIG.

  First, the contents of the embodiment of the present invention will be listed and described.

  (1) In order to solve the above-mentioned problems, a bus bar according to an aspect of the present invention is a bus bar used in an apparatus in which a hot wire operation is performed, and includes a central portion made of an insulator and a conductive metal. A base portion having a plurality of end portions, and a connection portion having a metal portion made of a conductive metal, and in a state in which the connection portion is in contact with the base portion, the end portions are interposed via the connection portion. The ends are electrically insulated by the central portion in a state in which the end portions are electrically connected to each other and the connection portion is not in contact with the base portion.

  With such a configuration, the base unit is used to perform connection and position adjustment in a state where a plurality of devices that perform hot-line work are electrically insulated from each other, and then the connection unit is brought into contact with the base unit. Thus, the devices can be electrically connected to each other, so that work safety in a device in which a hot-wire operation is performed can be improved.

  (2) Preferably, the bus bar further includes a fastening member for abutting the connecting portion against the base portion by fastening the connecting portion and the base portion, and the fastening member includes The metal part of the connection part and the central part of the base part are fastened.

  Conventionally, there is a possibility of electric shock due to a work mistake due to the configuration in which the positive electrode and the negative electrode of the charging unit are fastened. On the other hand, as described above, the possibility of an electric shock due to a work mistake can be reduced by the configuration in which the metal portion serving as the charging portion and the central portion made of the insulator are fastened.

  (3) Preferably, the said bus bar is further provided with the fastening member for abutting the said connection part on the said base part by fastening the said connection part and the said base part, The said connection part is further And an insulating portion made of an insulator, and the fastening member fastens the insulating portion of the connecting portion and the central portion of the base portion.

  As described above, the structure in which the insulators are fastened to each other can reduce the possibility that the worker touches the charged part when fastening the fastening member, and thus the work safety can be further improved.

  (4) Preferably, an opening is formed in the central portion of the base portion, the end portions of the base portion are connected to each other via the central portion, and the opening of the central portion The end portions are electrically connected to each other through the metal portion by being exposed to the connection portion and fitting the connection portion into the opening portion.

  Thus, by the structure which fits a connection part to the opening part of a base part, the contact position with respect to the base part of a connection part becomes clear, and work efficiency can be improved.

  (5) Preferably, the said connection part has a cover part which covers the circumference | surroundings of the said opening part and the said opening part in the state by which the said connection part was fitted by the said opening part of the said base part.

  With such a configuration, it is possible to prevent moisture from flowing into the opening due to dew condensation or the like, so that it is possible to suppress the occurrence of corrosion at the contact portion between the end portion of the base portion and the metal portion of the connection portion. it can.

  (6) Preferably, the said opening part of the said base part and the said connection part are fitted by substantially intermediate fit.

  With such a configuration, it is possible to prevent a large gap from being generated between the opening of the base portion and the metal portion of the connection portion, and to prevent moisture from flowing into the opening portion due to condensation or the like. It is possible to suppress the occurrence of corrosion at the contact portion between the end portion of this and the metal portion of the connection portion. Further, with the above-described configuration, it is not necessary to press-fit the connection portion into the opening portion using a special tool or the like, and the connection portion can be easily fitted into the opening portion. Can be improved.

  (7) Preferably, the end portions of the base portion are connected via the central portion, the metal portion of the connecting portion, and a protruding portion from the central portion at each of the plurality of end portions. Are brought into contact with each other, the end portions are electrically connected to each other through the connection portion.

  With such a configuration, it is sufficient that the connecting portion has a length that can connect the protruding portions from the central portion at each of the plurality of end portions, and the shape and the like of the connecting portion excluding the length are strictly accurate. Since it is not required, the connecting portion can be formed relatively easily.

  (8) Preferably, the connection part includes a plurality of the metal parts spaced apart from each other, and a fuse holder to which a fuse can be attached and detached is electrically connected to each metal part, and the metal part is the base. In the state in which the end portion of the base portion is in contact with the fuse holder and the fuse is attached to the fuse holder, the end portions of the base portion are electrically connected to each other through the metal portion and the fuse. Connected.

  With such a configuration, after performing connection and position adjustment of a plurality of devices where hot-line work is performed in an insulated state in which no fuse is attached, a fuse is attached and the devices are electrically connected to each other. Therefore, work safety can be improved and a fuse can be disposed between the devices. Further, since the fuse can be arranged without providing a substrate other than the bus bar or a resin plate, it is possible to prevent the number of wiring work steps from increasing.

  (9) Preferably, a fuse holder to which a fuse can be attached and detached is electrically connected to each end of the base portion, and the connection portion is a fuse attached to the fuse holder, In a state where the fuse is attached, the end portions of the base portion are electrically connected via the fuse.

  In this way, the structure in which the fuse holder is directly connected to each end of the base portion prevents the number of parts from greatly increasing even when a fuse is disposed between devices where hot-line work is performed, thereby reducing the cost. The rise can be suppressed.

  (10) Preferably, the material of the said edge part of the said base part contains the same material as the terminal which is the connection object of the said edge part among the terminals of the said apparatus in which a hot wire operation | work is performed.

  Here, when the material of the terminal of the device where the hot wire operation is performed is different from the material of the end of the base part to which the terminal is connected, considering the occurrence of dissimilar metal contact corrosion, a plurality of base parts It is conceivable that the same material is used for the end portion and the metal portion in the connection portion. In this case, it is possible to prevent the occurrence of dissimilar metal contact corrosion between the end part and the metal part at the connection part, but the dissimilar metal contact corrosion at the contact part between the terminal of the device and the end part of the base part. May occur. In particular, since a battery terminal or the like, which is a device that performs hot-wire work, has a complicated shape, it is difficult to sufficiently prevent the inflow of moisture due to dew condensation or the like, and the dissimilar metal contact corrosion easily proceeds.

  On the other hand, when the material of the terminal of the device is the same as the material of the end of the base part to which the terminal is connected, a plurality of terminals of the device, specifically, a positive electrode side terminal and a negative electrode of the storage battery Since a different metal is generally used as a material for the terminal on the side, a plurality of end portions in the base portion are also used as different materials. In this case, the material of the metal part of the connection part is different from the material of at least one end part among the plurality of end parts. That is, it is possible to prevent the contact corrosion of different metals between the terminal of the device and the end portion of the base portion, but different types of contact portions between the metal portion of the connection portion and the end portion of the base portion. Metal contact corrosion may occur.

  Comparing the two cases described above, the contact area between the metal part of the connection part and the end part of the base part is often larger than the contact area between the terminal of the device and the end part of the base part. . For this reason, in the latter case, compared to the former case, the amount of current per unit area at the contact portion between different metals is reduced, and the occurrence of dissimilar metal contact corrosion can be suppressed.

  That is, as described above, according to the configuration in which the material of the terminal of the device is the same as the material of the end of the base portion to which the terminal is connected, the material of the terminal of the device and the terminal are Compared with the case where the material of the end of the base part to be connected is different, the occurrence of dissimilar metal contact corrosion can be suppressed.

  (11) Preferably, the plurality of end portions of the base portion include a first end portion and a second end portion, and the first end portion and the second end portion are made of different materials. The metal portion is made of a conductive metal having an ionization tendency between the conductive metal that is the material of the first end portion and the conductive metal that is the material of the second end portion. .

  Here, the greater the difference in ionization tendency between different metals that are in contact with each other, the greater the potential difference between the metals and the more likely that different metal contact corrosion will occur. On the other hand, since the potential difference between the metal part and the first end part and the potential difference between the metal part and the second end part can be kept small by the above-described configuration, Occurrence can be suppressed.

  (12) Preferably, the plurality of end portions of the base portion include a first end portion and a second end portion connected to the first end portion via the central portion, and the bus bar. Further includes an adjustment unit for adjusting the distance between the first end and the second end.

  With such a configuration, even when the distances between a plurality of devices on which hot-line work is performed are different, the above-mentioned devices can be connected using the same base portion, thereby increasing versatility. it can.

  In addition, when the adjustment part as described above is not provided, for example, by increasing the diameter of the terminal connection part which is formed at the end part and is a hole for connecting the terminal and the end part of the device, It is conceivable to cope with the difference in distance between the devices. However, the diameter of the terminal connection portion can be reduced by the configuration having the adjustment portion as described above, and compared with the case where the diameter of the terminal connection portion is large, the terminal of the device and the end portion of the base portion. The area of the contact portion can be increased. For this reason, the amount of current per unit area at the contact portion between the terminal of the device and the end of the base portion is reduced, and generation of heat and corrosion due to contact resistance can be suppressed.

  (13) Preferably, in the central portion of the base portion, as the adjustment portion, a first central portion connected to the first end portion, and a second central portion connected to the second end portion, A first fixing member, a first central through hole is formed in the first central portion, a second central through hole is formed in the second central portion, and the first fixing member is The first central through hole and the second central through hole are inserted, and the first central portion and the second central portion are slidably fixed to each other.

  With such a configuration, the distance between the first end portion and the second end portion can be easily adjusted by sliding the first center portion and the second center portion relative to each other. Work errors can be reduced.

  (14) Preferably, the metal part of the connection part includes a first metal part connected to the first end part and a second metal part connected to the second end part as the adjustment part. A first metal through hole is formed in the first metal part, a second metal through hole is formed in the second metal part, and the second fixing member is The first metal part and the second metal part are slidably fixed to each other through the first metal through hole and the second metal through hole.

  With such a configuration, even when the distances between a plurality of apparatuses on which hot-line work is performed are different, the above apparatuses can be electrically connected using not only the base part but also the same connection part. Therefore, versatility can be further improved.

  (15) Preferably, one or a plurality of grooves are formed in the connecting portion of the end portion and the central portion of the base portion.

  With such a configuration, the groove formed at the end portion and the groove formed at the central portion mesh with each other, and the connection strength between the end portion and the central portion can be increased. In addition, since such a groove is formed, it is possible to prevent moisture due to condensation or the like from flowing between the end portion and the center portion.

  For example, as described in (18) described later, as a method of manufacturing the base portion, after an end portion is installed in the mold, an insulating resin that is a material of the central portion is injected into the mold. There is a way. When such a method is used, since the groove is formed at the end portion, the resin flows into the groove at the end portion to form the groove at the central portion. Thereby, the groove | channel of a center part can be formed easily and the connection strength of an edge part and a center part can be improved further.

  (16) Preferably, an inspection hole for contacting a measurement terminal of the inspection device is formed in at least one of the end portion of the base portion and the metal portion of the connection portion.

  With such a configuration, for example, by inserting the measurement terminal into the inspection hole, it is not necessary for the operator who performs the inspection to hold the measurement terminal during the inspection, so that the inspection can be performed efficiently.

  (17) Preferably, the bus bar further includes a fastening member for abutting the connection portion against the base portion by fastening the connection portion and the base portion, and the base portion and the connection portion. The fastening member is provided on at least one of the portions.

  With such a configuration, the contact position of the connecting portion with respect to the base portion is clarified, and the working efficiency can be further improved. In addition, when the connection portion is in contact with the base portion, a voltage is applied to the bus bar. With the above configuration, the fastening operation can be performed in a short time. Safety in work can be improved.

  (18) In order to solve the above-described problem, a bus bar manufacturing method according to an aspect of the present invention is a bus bar manufacturing method used in an apparatus in which a hot wire operation is performed, and the bus bar is made of an insulator. A central portion, and a base portion having a plurality of end portions made of a conductive metal, and a connection portion for electrically connecting the end portions of the base portion through a metal portion made of a conductive metal, A step of installing the end portion in a mold; and injecting an insulating resin, which is a material of the center portion, into the mold in which the end portion is disposed, so that a plurality of the end portions are formed in the center portion. Forming the base portion connected to the base plate.

  By such a manufacturing method, it is possible to connect the end portion and the central portion with high strength without inserting a fastening member such as a screw through the end portion and the central portion. In addition, since the end portion and the central portion can be connected without using a fastening member in this way, for example, occurrence of a short circuit due to contact of the fastening member with metal can be prevented. Moreover, since the process of inserting the fastening member is not required, the manufacturing process and the manufacturing cost can be reduced even when many base parts are manufactured.

  Further, for example, it is possible to form a groove in advance in a connecting portion with the central portion among the end portions installed in the mold. In such a case, the resin flows into the groove at the end, and a groove that meshes with the groove at the end is formed at the center. Thereby, the groove | channel of a center part can be formed easily and the connection strength of an edge part and a center part can be improved further.

  (19) Preferably, the bus bar manufacturing method further includes connecting a plurality of the end portions to the central portion, and then connecting the terminals of the device in which a hot wire operation is performed to the end portions. Forming a terminal connection.

  With such a manufacturing method, a manufacturing tolerance can be increased when the central portion is formed. Further, in this way, in order to form the terminal connection portion after the length of the base portion is determined, for example, when the terminal connection portion has a hole shape, the end portion and the central portion are formed after the terminal connection portion is formed at the end portion. The diameter of the terminal connecting portion can be made smaller than in the case where the connection is performed.

  Thereby, since it is possible to ensure a large contact area between the terminal of the device where the hot wire work is performed and the terminal connection portion, even when a large current flows between the devices, the terminal of the device, The amount of current per unit area at the contact portion of the base portion with the terminal connection portion is reduced, and heat generation and corrosion due to contact resistance can be suppressed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

<First Embodiment>
[Configuration and basic operation]
FIG. 1 is a diagram showing a configuration of a storage battery panel including a bus bar according to the first embodiment of the present invention.

  Referring to FIG. 1, storage battery panel 12 includes a plurality of storage batteries 10 housed in cubicles, for example. The storage battery 10 is a device that performs hot-wire work, specifically a lithium battery or the like, and includes a positive terminal 11A and a negative terminal 11B. The plurality of storage batteries 10 are electrically connected by connecting the positive terminal 11 </ b> A and the negative terminal 11 </ b> B with a bus bar 101. Further, the storage battery 10 placed on the end of each shelf of the cubicle is electrically connected to the storage battery 10 placed on another shelf or another device (not shown) using a cable or the like (not shown). .

  FIG. 2 is an exploded perspective view showing the configuration of the bus bar according to the first embodiment of the present invention. 3 is a plan view of the bus bar shown in FIG. 2, and FIG. 4 is a side view of the bus bar shown in FIG.

  2 to 4, the bus bar 101 includes a base portion 21, a connection portion 22, and a fastening member 23. Moreover, the base part 21 has the center part 31, the edge part (1st edge part) 32A, and the edge part (2nd edge part) 32B. The base portion 21 may have three or more end portions.

  In the base portion 21, the central portion 31 has a plate shape made of an insulator, and insertion ports 33A and 33B into which the end portions 32A and 32B are inserted are formed on both side surfaces in the longitudinal direction. The end portions 32A and 32B are inserted into the insertion ports 33A and 33B, respectively, and are fixed apart from each other.

  Further, a concave opening 34 is formed in the central portion 31, and the end portions 32 </ b> A and 32 </ b> B inserted into the insertion ports 33 </ b> A and 33 </ b> B of the central portion 31 are exposed from the opening 34. A fastening hole 35 is formed in the approximate center of the central portion 31.

  The end portions 32A and 32B are made of a conductive metal. A terminal connection part 36A for connecting the terminal 11A on the positive electrode side of the storage battery 10 is formed on the end part 32A, and a terminal connection part 36B for connecting the terminal 11B on the negative electrode side of the storage battery 10 is formed on the end part 32B. Is formed. For example, the terminal connecting portions 36A and 36B have a hole shape, and the end portions 32A and 32B and the terminals 11A and 11B are connected by inserting the terminals 11A and 11B through these holes, respectively. The terminal connection portions 36A and 36B are not limited to the hole shape, and may be any configuration that can be connected to the terminals 11A and 11B.

  The connection part 22 has a metal part made of a conductive metal, and a fastening hole 37 is formed at substantially the center. In the first embodiment of the present invention, the entire connection portion 22 corresponds to a metal portion made of a conductive metal. In addition, the connection part 22 may have a configuration in which a part is a metal part and the other part is made of an insulator.

  Further, the connecting portion 22 is fitted to the opening 34 formed in the central portion 31 of the base portion 21 with an fit equivalent to an intermediate fit, specifically, a gap that has a gap of about 10 microns. . In the state where the connection part 22 is fitted in the opening 34 of the base part 21, the fastening hole 35 formed in the central part 31 and the fastening hole 37 formed in the connection part 22 are the central part. It is located at approximately the same location in the plane direction of 31.

  Then, the fastening member 23 is inserted into the fastening hole 35 formed in the central portion 31 and the fastening hole 37 formed in the connecting portion 22 and fastened, whereby the connecting portion is connected to the base portion 21. 22 is fixed in a contacted state.

[Connection work]
When connecting the terminals 11 </ b> A and 11 </ b> B of the storage battery 10 using the bus bar 101, first, the operator inserts corresponding electrode-side terminals into the terminal connection portions 36 </ b> A and 36 </ b> B at the end portions 32 </ b> A and 32 </ b> B of the base portion 21. . At this time, as described above, the end portions 32A and 32B are separated from each other, and the central portion 31 is an insulator, so that no voltage is applied to the base portion 21. For this reason, the worker can perform connection and position adjustment of the plurality of storage batteries 10 in a state where the storage batteries 10 are insulated.

  Next, the operator causes the connecting portion 22 to abut on the base portion 21, specifically, fits the connecting portion 22 into the opening 34 of the base portion 21. Then, the operator inserts the fastening member 23 into the fastening hole 35 formed in the central portion 31 and the fastening hole 37 formed in the connecting portion 22 and fastens.

  Thereby, end part 32A, 32B of the base part 31 exposed from the opening part 34 is electrically connected via the connection part 22 which is a metal part. That is, the terminals 11 </ b> A and 11 </ b> B of the storage battery 10 connected to the end portions 32 </ b> A and 32 </ b> B are electrically connected via the end portions 32 </ b> A and 32 </ b> B and the connection portion 22 of the base portion 21.

  By the way, in recent years, in preparation for situations where electric power is not stably supplied, development and installation of a power storage system that converts natural energy such as sunlight into electric power and stores it has been advanced. For example, as such a power storage system, a storage battery panel to which a plurality of storage batteries are connected is provided in a cubicle and installed on the roof of a building.

  A bus bar is used as a connection tool for connecting the terminals of the storage battery. For example, although the bus bar described in Patent Document 1 described above is known, in the bus bar described in Patent Document 1, an operator may touch the conductive portion of the bus bar when connecting between terminals. In addition, since a voltage is applied to the conductive portion, there is a problem that there is a possibility of electric shock, heat generation, or bus bar breakage.

  Moreover, not only when connecting between terminals, but in the case of a unit-type battery panel, some of the storage batteries 10 included in the storage battery panel 12 may be transported in a connected state, as described above. In addition, when transportation is performed in a state where a voltage is applied to the conductive portion, there is a problem that heat may be generated during transportation.

  In addition, since the cost of a product is greatly affected by the type of battery, it is desirable to select the optimal battery for each product. In this case, since many types of batteries can be connected, There is an increased likelihood that the operator's skill will not be sufficient for connecting different types of batteries. For this reason, it is desirable that the safety of the work in the apparatus in which the hot line work is performed is further increased.

  On the other hand, in the bus bar 101 according to the first embodiment of the present invention, the base portion 21 has a central portion 31 made of an insulator and end portions 32A and 32B made of a conductive metal. Moreover, the connection part 22 has a metal part which consists of an electroconductive metal. In a state where the connection portion 22 is in contact with the base portion 21, the end portions 32 </ b> A and 32 </ b> B are electrically connected via the connection portion 22 and the connection portion 22 is not in contact with the base portion 21. 2, the end portions 32 </ b> A and 32 </ b> B are electrically insulated from each other by the central portion 31.

  With such a configuration, the base part 21 is used to perform connection and position adjustment in a state where the storage batteries 10 are electrically insulated from each other, and then the connection part 22 is brought into contact with the base part 21 to thereby contact the storage battery 10. They can be electrically connected to each other. For this reason, the safety | security of the operation | work in the apparatus in which a hot wire operation | work is performed can be improved.

  Further, in the bus bar 101 according to the first embodiment of the present invention, the fastening member 23 for bringing the connecting portion 22 into contact with the base portion 21 by fastening the connecting portion 22 and the base portion 21 is connected. The metal part of the part 22 and the central part 31 of the base part 21 are fastened.

  Conventionally, there is a possibility of electric shock due to a work mistake due to the configuration in which the positive electrode and the negative electrode of the charging unit are fastened. On the other hand, as described above, the possibility of electric shock due to a work error is reduced by fastening the metal part of the connection part 22 serving as a charging part and the central part 31 of the base part 21 made of an insulator. Can do.

  In the bus bar 101 according to the first embodiment of the present invention, an opening 34 is formed in the central portion 31 of the base portion 21. Further, the end portions 32 </ b> A and 32 </ b> B of the base portion 21 are connected via the central portion 31 and are exposed from the opening 34 of the central portion 31. Then, when the connecting portion 22 is fitted into the opening portion 34, the end portions 32A and 32B are electrically connected to each other via the connecting portion 22 that is a metal portion.

  Thus, by the structure which fits the connection part 22 in the opening part 34 of the base part 21, the contact position with respect to the base part 21 of the connection part 22 becomes clear, and work efficiency can be improved.

  In the bus bar 101 according to the first embodiment of the present invention, the opening 34 of the base portion 21 and the connection portion 22 are fitted with a substantially intermediate fit.

  With such a configuration, it is possible to avoid a large gap between the opening portion 34 of the base portion 21 and the connection portion 22 that is a metal portion, and to prevent moisture due to condensation from flowing into the opening portion 34. Therefore, it is possible to suppress the occurrence of corrosion at the contact portion between the end portions 32A and 32B of the base portion 21 and the connection portion 22 that is a metal portion. In addition, with the above configuration, there is no need to press-fit the connection portion 22 into the opening portion 34 using a special tool or the like, and the connection portion 22 can be easily fitted into the opening portion 34. Work efficiency can be further improved.

  Next, another embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

<Second Embodiment>
This embodiment relates to a bus bar that fastens insulators to each other as compared with the bus bar 101 according to the first embodiment.

  FIG. 5 is an exploded perspective view showing the configuration of the bus bar according to the second embodiment of the present invention.

  5, the central portion 31 of the base portion 21 in the bus bar 102 according to the second embodiment of the present invention is longer in the longitudinal direction than the central portion 31 of the base portion 21 in the bus bar 101 shown in FIG. And four fastening members 41, for example, bolts, are provided in the extended portion.

  Further, in the base portion 21 in the bus bar 101 shown in FIG. 2, a fastening hole 35 is formed in the approximate center of the central portion 31, but in the base portion 21 in the bus bar 102 shown in FIG. Such a fastening hole is not formed. Except for the above points, the other structure of the base portion 21 is the same as that of the base portion 21 in the bus bar 101 shown in FIG.

  FIG. 6 is a rear view of the connecting portion of the bus bar shown in FIG.

  Referring to FIGS. 5 and 6, connection portion 22 in bus bar 102 has a metal portion 42 made of a conductive metal and a lid portion 43 made of an insulator. The metal part 42 protrudes from the lid part 43 and is fitted into a concave opening 34 formed in the central part 31 of the base part 21 with a fit equivalent to an intermediate fit.

  The lid portion 43 covers the opening portion 34 and the periphery of the opening portion 34 in a state where the metal portion 42 of the connection portion 22 is fitted to the opening portion 34 of the base portion 21. The lid 43 may be configured to cover a part of the periphery of the opening 34 instead of the entire periphery of the opening 34.

  In addition, for example, four fastening holes 44 are formed in the lid portion 43, and these four fastening holes 44 are formed in the central portion 31 in a state where the metal portion 42 is fitted in the opening 34 of the base portion 21. In the plane direction, each is located at a location corresponding to four fastening members 41.

  Then, after these four fastening members 41 are respectively inserted into the four fastening holes 44 of the lid portion 43, the connecting portions 22 are connected to the base portion 21 by fastening the fastening members 41 with nuts 45, for example. Are fixed in contact with each other.

  In the bus bar 102 shown in FIG. 5, four fastening members 41 are provided in the central portion 31 of the base portion 21, but these fastening members 41 are provided in the lid portion 43, and the fastening holes 44 are provided in the central portion. 31 may be formed.

  In the bus bar 102 shown in FIG. 5, the metal portion 42 protrudes from the lid portion 43, but when the end portions 32 </ b> A and 32 </ b> B and the central portion 31 form the same plane in the base portion 21, The portion 42 may not protrude from the lid portion 43. Moreover, the cover part 43 does not necessarily need to consist of an insulator, and may consist of a conductive metal. The opening 34 is not limited to a concave shape, and may be a through hole.

  Since other configurations are the same as those of the bus bar 101 according to the first embodiment, detailed description thereof will not be repeated here.

[Connection work]
When connecting the terminals 11A and 11B of the storage battery 10 using the bus bar 102, first, the worker at the end portions 32A and 32B of the base portion 21 as in the case of the first embodiment of the present invention described above. Corresponding electrode-side terminals are inserted into the terminal connection portions 36A and 36B.

  Next, the operator inserts the four fastening members 41 provided in the central portion 31 of the base portion 21 into the four fastening holes 44 formed in the lid portion 43 of the connection portion 22, respectively. Then, the connecting portion 22 is brought close to the opening, and the metal portion 42 of the connecting portion 22 is fitted into the opening 34 of the base portion 21.

  Then, the operator fastens the four fastening members 41 respectively inserted through the four fastening holes 44 of the lid portion 43 with the nuts 45. Thereby, the end portions 32 </ b> A and 32 </ b> B of the base portion 31 exposed from the opening portion 34 are electrically connected via the metal portion 42 of the connection portion 22. That is, the terminals 11 </ b> A and 11 </ b> B of the storage battery 10 connected to the end portions 32 </ b> A and 32 </ b> B are electrically connected via the end portions 32 </ b> A and 32 </ b> B of the base portion 21 and the metal portion 42 of the connection portion 22.

  Note that not only the bus bar 102 according to the second embodiment but also the bus bar according to another embodiment may be configured such that the insulators are fastened together. That is, also in the bus bar according to another embodiment, a part of the connection part 22 is an insulator, and the insulator part of the connection part 22 and the central part 31 of the base part 21 are fastened. Also good.

  Also, in the bus bar according to another embodiment, when the opening 34 is formed in the central portion 31 of the base portion 21 and the connection portion 22 is fitted into the opening 34, the connection portion 22. However, you may have the cover part 43 which covers the circumference | surroundings of the opening part 34 and the opening part 34. FIG.

  As described above, in the bus bar 102 according to the second embodiment of the present invention, the fastening member 41 for bringing the connecting portion 22 into contact with the base portion 21 by fastening the connecting portion 22 and the base portion 21. However, the lid portion 43 made of an insulator in the connection portion 22 and the central portion 31 of the base portion 21 are fastened.

  As described above, the configuration in which the insulators are fastened to each other can reduce the possibility that the operator touches the charged part when fastening member 41 is fastened, thereby further improving the safety of work. .

  Further, in the bus bar 102 according to the second embodiment of the present invention, the lid portion 43 of the connection portion 22 is in the state where the connection portion 22 is fitted to the opening portion 34 of the base portion 21. The periphery of the part 34 is covered.

  With such a configuration, it is possible to prevent moisture due to dew condensation or the like from flowing into the opening 34, so that the contact portion between the end portions 32 </ b> A and 32 </ b> B of the base portion 21 and the metal portion 42 of the connecting portion 21 is corroded. Can be prevented from occurring.

  In the bus bar 102 according to the second embodiment of the present invention, the fastening member 41 is provided on at least one of the base portion 21 and the connection portion 22.

  With such a configuration, the contact position of the connecting portion 22 with respect to the base portion 21 becomes clear, and the working efficiency can be further improved. Further, when the connection portion 22 is in contact with the base portion 21, a voltage is applied to the bus bar 102. With the above-described configuration, the fastening operation can be performed in a short time. Therefore, safety in fastening work can be improved.

(Modification)
FIG. 7 is a diagram illustrating a configuration of a bus bar according to a modification of the second embodiment of the present invention.

  As shown in FIG. 7, for example, a nut 46 may be provided in the central portion 31 of the base portion 21 instead of the fastening member 41. That is, for example, four nuts 46 are embedded in the central portion 31 in advance, and when the connecting portion 22 is brought into contact with the base portion 21, four fastening members 47 that are bolts, for example, are provided. The base part 21 and the connection part 22 may be fastened by inserting each of them.

  Note that the nut 46 may be provided in the central portion 31 or the connection portion 22 not only in the bus bar 102 according to the modification of the second embodiment but also in the bus bar according to another embodiment.

  Next, another embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

<Third Embodiment>
The present embodiment relates to a bus bar in which a fuse is disposed between storage batteries, as compared to the bus bar 101 according to the first embodiment.

  FIG. 8 is a perspective view showing the configuration of the bus bar according to the third embodiment of the present invention.

  Referring to FIG. 8, the base portion 21 in the bus bar 103 according to the third embodiment of the present invention is not provided with the fastening member 41 as compared with the base portion 21 in the bus bar 102 shown in FIG. Further, a fastening hole 51 is formed. The other structure of the base part 21 is the same as that of the base part 21 in the bus bar 102 shown in FIG.

  In addition, although the center part 31 of the base part 21 in the bus bar 103 shown in FIG. 8 is extended in the direction orthogonal to a longitudinal direction compared with the center part 31 of the base part 21 in the bus bar 101 shown in FIG. It does not have to be extended.

  In the bus bar 103, the connection portion 22 includes metal portions 52A and 52B made of a conductive metal and an insulating portion 53 made of an insulator. These metal parts 52A and 52B are connected via an insulating part 53 and have a plate shape. The connecting portion 22 is fitted into an opening 34 formed in the central portion 31 of the base portion 21 with a fit equivalent to an intermediate fit. Note that the metal part 52A and the metal part 52B need only be separated from each other in the connection part 22, and the connection part 22 may not have the insulating part 53.

  The bus bar 103 further includes a fuse holder 54 to which the fuse 56 can be attached and detached. The fuse holder 54 has holder end portions 55 </ b> A and 55 </ b> B and a fuse clamping portion 57. The holder end 55A is electrically connected to the metal part 52A, and the holder end 55B is electrically connected to the metal part 52B. The fuse 56 is attached to the fuse holder 54 in a state of being sandwiched by the fuse sandwiching portion 57. Then, in a state where the fuse 56 is attached to the fuse holder 54 in this way, the fuse clamping portion 57 electrically connects the holder end portions 55A and 55B and the fuse 56.

  Further, a fastening hole (not shown) is formed in the approximate center of the insulating portion 53 of the connecting portion 22, and for fastening the central portion 31 in a state where the connecting portion 22 is fitted into the opening 34 of the base portion 21. The hole 51 and the fastening hole formed in the insulating portion 53 are located at approximately the same location in the plane direction of the central portion 31.

  A connection in which the fuse holder 54 is connected by inserting a fastening member (not shown) through the fastening hole 51 formed in the central portion 31 and the fastening hole formed in the insulating portion 53 and fastening the fastening member. The portion 22 is fixed in contact with the base portion 21.

  Since other configurations are the same as those of the bus bar 101 according to the first embodiment, detailed description thereof will not be repeated here.

[Connection work]
When connecting the terminals 11 </ b> A and 11 </ b> B of the storage battery 10 using the bus bar 103, first, the operator, like the case of the first embodiment and the second embodiment of the present invention described above, the base portion 21. The corresponding electrode side terminals are inserted into the terminal connection portions 36A and 36B at the end portions 32A and 32B.

  Next, the worker attaches the fuse 56 to the fuse holding portion 57 of the fuse holder 54. Then, the worker abuts the connection portion 22 to which the fuse holder 54 is connected to the base portion 21. Specifically, the operator fits the integrated metal portions 52 </ b> A and 52 </ b> B and the insulating portion 53 into the opening 34 of the base portion 21. Then, the operator inserts a fastening member into the fastening hole 51 formed in the central portion 31 and the fastening hole formed in the insulating portion 53 of the connecting portion 22 and fastens them.

  Thereby, the end portions 32A and 32B exposed from the opening portion 34 of the base portion 31 are the metal portions 52A and 52B of the connection portion 22, the holder end portions 55A and 55B of the fuse holder 54, the fuse 56, and the fuse. It is electrically connected via the clamping part 57. That is, the terminals 11A and 11B of the storage battery 10 are connected to the end portions 32A and 32B of the base portion 21, the metal portions 52A and 52B of the connection portion 22, the holder end portions 55A and 55B of the fuse holder 54, the fuse 56, and the fuse clamp. It is electrically connected via the part 57.

  Note that not only in the bus bar 103 according to the third embodiment but also in the bus bar according to other embodiments, the connection part 22 has a plurality of metal parts spaced apart from each other, and a fuse holder 54 is provided in each metal part. It may be configured to be electrically connected.

  As described above, in the bus bar 103 according to the third embodiment of the present invention, the connecting portion 22 has the metal portions 52A and 52B spaced apart from each other. Further, a fuse holder 54 to which the fuse 56 can be attached and detached is electrically connected to each of the metal portions 52A and 52B. The end portions 32A and 32B of the base portion 21 are in a state where the metal portions 52A and 52B are in contact with the end portions 32A and 32B of the base portion 21 and the fuse 56 is attached to the fuse holder 54. They are electrically connected to each other through the metal parts 52A and 52B and the fuse 56.

  FIG. 9 is a diagram illustrating a state in which the storage batteries are connected to each other using a bus bar in which a fuse is attached to the fuse holder illustrated in FIG. 8.

  As shown in FIG. 9, the fuse 56 can be disposed between the storage batteries 10 by using the bus bar 103. In addition, since the storage battery 10 can be electrically connected to each other by attaching the fuse 56 after the connection and position adjustment of the storage batteries 10 are performed in an insulated state where the fuse 56 is not attached, work safety is ensured. Can be improved. Further, since the fuse 56 can be arranged between the storage batteries 10 without providing a substrate or a resin plate other than the bus bar 103, it is possible to prevent an increase in the number of wiring work steps.

  Next, another embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

<Fourth embodiment>
This embodiment relates to a bus bar in which a fuse holder is directly connected to an end portion of a base portion, as compared with the bus bar 103 according to the third embodiment.

  FIG. 10 is a perspective view showing the configuration of the bus bar according to the fourth embodiment of the present invention.

  Referring to FIG. 10, in the bus bar 104 according to the fourth embodiment of the present invention, the connecting portion 22 corresponds to a fuse. Further, the bus bar 104 has a fuse holder 54 to which the connecting portion 22 that is a fuse can be attached and detached.

  The fuse holder 54 has holder end portions 55 </ b> A and 55 </ b> B and a fuse clamping portion 57. The holder end 55A is electrically connected to the end 32A exposed from the opening 34, and the holder end 55B is electrically connected to the end 32B exposed from the opening 34. The connection portion 22 that is a fuse is attached to the fuse holder 54 in a state of being sandwiched by the fuse sandwiching portion 57. Then, in the state where the connection portion 22 is attached to the fuse holder 54 in this way, the fuse clamping portion 57 electrically connects the holder end portions 55A and 55B and the connection portion 22.

  The fuse holder 54 may be configured to be fitted to the opening 34 of the central portion 31 with a fit equivalent to an intermediate fit.

  Since other configurations are the same as those of the bus bar 101 according to the first embodiment, detailed description thereof will not be repeated here.

[Connection work]
When connecting the terminals 11 </ b> A and 11 </ b> B of the storage battery 10 using the bus bar 104, first, the operator, as in the case of the first to third embodiments of the present invention described above, the base portion 21. The corresponding electrode side terminals are inserted into the terminal connection portions 36A and 36B at the end portions 32A and 32B.

  At this time, since the end portions 32A and 32B are separated from each other as described above, unless the connection portion 22 as a fuse is attached to the fuse holder 54 connected to the end portions 32A and 32B, No voltage is applied.

  Then, when the operator attaches the connecting portion 22 to the fuse holding portion 57 of the fuse holder 54, the end portions 32A and 32B of the base portion 21 are connected to the holder end portions 55A and 55B, the connecting portion 22 that is a fuse, Electrical connection is made via the fuse clamping portion 57.

  Note that not only the bus bar 104 according to the fourth embodiment but also the bus bar according to another embodiment may be configured such that the fuse holder 54 is directly connected to the end portions 32A and 32B of the base portion 21. Good.

  As described above, in the bus bar 104 according to the fourth embodiment of the present invention, the fuse holder 54 to which the fuse can be attached and detached is electrically connected to the end portions 32A and 32B of the base portion 21. The connection portion 22 is a fuse attached to the fuse holder 54. And in the state where the connection part 22 which is a fuse is attached to the fuse holder 54, the end parts 32A and 32B of the base part 21 are electrically connected via the fuse.

  In this way, the structure in which the fuse holder 54 is directly connected to the end portions 32A and 32B of the base portion 21 prevents the number of components from greatly increasing even when a fuse is disposed between the plurality of storage batteries 10. Increase in cost can be suppressed.

  Next, another embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

<Fifth embodiment>
In the first to fourth embodiments of the present invention described above, the opening 34 is formed in the central portion 31 of the base portion 21, and the end portions 32 </ b> A and 32 </ b> B exposed from the opening 34 are formed. On the other hand, the whole connection part 22, the metal part of the connection part 22, or the fuse holder 54 is connected.

  In contrast, in the bus bar 105 according to the fifth embodiment of the present invention, no opening is formed in the central portion 31 of the base portion 21, and the connection portion 22 is a metal portion made of a conductive metal. However, the end portions 32A and 32B are in contact with the protruding portions from the central portion 31.

  FIG. 11 is a perspective view showing a configuration of a bus bar according to the fifth embodiment of the present invention.

  Specifically, the end portions 32A and 32B are made of a conductive metal. A terminal connection portion 36A connected to the positive terminal 11A of the storage battery 10 is formed at the end portion 32A, and a terminal connection portion 36B connected to the negative terminal 11B of the storage battery 10 is formed at the end portion 32B. Has been.

  Further, the length in the longitudinal direction of the connecting portion 22 is larger than the length in the longitudinal direction of the central portion 31, and both ends of the connecting portion 22 are in contact with the end portions 32 </ b> A and 32 </ b> B protruding from the central portion 31.

  In addition, since the base part 21 shown in FIG. 11 has a level | step difference in the boundary of the center part 31 and end part 32A, 32B, although the connection part 22 is exhibiting the shape which considered the said level | step difference, the center part 31 is shown. The end portions 32A and 32B may form the same plane.

  A fastening hole 61 is formed in the approximate center of the central portion 31, and a fastening hole 62 is also formed in the approximate center of the connecting portion 22. In a state where the connection portion 22 is in contact with the base portion 21, the fastening hole 61 formed in the central portion 31 and the fastening hole 62 formed in the connection portion 22 are approximately in the plane direction of the central portion 31. Located in the same place.

  Then, by inserting the fastening member 23 into the fastening hole 61 formed in the central portion 31 and the fastening hole 62 formed in the connecting portion 22 and fastening, the connecting portion is connected to the base portion 21. 22 is fixed in a contacted state.

[Connection work]
When connecting the terminals 11 </ b> A and 11 </ b> B of the storage battery 10 using the bus bar 105, first, the operator inserts corresponding electrode-side terminals into the terminal connection portions 36 </ b> A and 36 </ b> B at the end portions 32 </ b> A and 32 </ b> B of the base portion 21. .

  Next, the operator brings the connecting portion 22 into contact with the base portion 21, specifically, brings both ends of the connecting portion 22 into contact with the end portions 32 </ b> A and 32 </ b> B of the base portion 21. Then, the operator inserts the fastening member 23 into the fastening hole 61 formed in the central portion 31 and the fastening hole 62 formed in the connecting portion 22 and fastens. Thereby, end part 32A, 32B of the base part 31 is electrically connected via the connection part 22 which is a metal part. That is, the terminals 11 </ b> A and 11 </ b> B of the storage battery 10 connected to the end portions 32 </ b> A and 32 </ b> B are electrically connected via the end portions 32 </ b> A and 32 </ b> B and the connection portion 22 of the base portion 21.

  As described above, in the bus bar 105 according to the fifth embodiment of the present invention, the end portions 32A and 32B of the base portion 21 are connected to each other via the central portion 31, and the connection portion 22 that is a metal portion, The end portions 32 </ b> A and 32 </ b> B are electrically connected to each other through the connection portion 22 by contacting the protruding portions from the central portion 31 in each of the end portions 32 </ b> A and 32 </ b> B.

  With such a configuration, it is sufficient for the connecting portion 22 to have a length that allows the protruding portions from the central portion 31 at each of the end portions 32A and 32B to be connected to each other, and the shape and the like of the connecting portion 22 excluding the length are sufficient. Since strict accuracy is not required, the connecting portion 22 can be formed relatively easily.

(Modification 1)
FIG. 12: is a perspective view which shows the structure of the bus bar which concerns on the modification 1 of the 5th Embodiment of this invention. 13 is a perspective view showing a configuration of an end portion of the base portion of the bus bar shown in FIG. 12, and FIG. 14 is a side view of the end portion shown in FIG.

  Referring to FIGS. 12 to 14, end portions 32 </ b> A and 32 </ b> B of base portion 21 of bus bar 105 according to the first modification of the fifth embodiment of the present invention are connected to the central portion 31, for example, cutting. A plurality of grooves 63 are formed. 13 and 14 show only the end portion 32A, the end portion 32B has the same configuration as the end portion 32A.

  Moreover, the center part 31 in the base part 21 is formed with a groove that fits into the groove of the end portions 32A and 32B at the connection portion between the end portions 32A and 32B.

  Specifically, the base portion 21 is manufactured, for example, by flowing an insulating resin into a mold. Specifically, first, the end portions 32A and 32B in which the groove 63 is formed are installed and fixed in a mold. Then, an insulating resin that is a material of the central portion 31 is injected into the mold.

  As a result, the resin flows into the grooves 63 of the end portions 32A and 32B, and the grooves that are fitted to the grooves 63 of the end portions 32A and 32B with high strength in the connecting portion of the central portion 31 with the end portions 32A and 32B. Is formed.

  Then, after connecting the end portions 32A and 32B and the central portion 31 as described above, the base portion 21 can be formed by forming the terminal connection portions 36A and 36B at the end portions 32A and 32B.

  As the material of the central portion 31, for example, polybutylene terephthalate (PBT) used for a terminal block of a power supply device, an epoxy used for a semiconductor mold or the like, or a resin such as polyamide is used. It is done.

  Further, the grooves of the end portions 32A and 32B are not limited to those shown in FIGS. 15 is a perspective view showing another configuration of the end portion of the base portion of the bus bar shown in FIG. 12, and FIG. 16 is a side view of the end portion shown in FIG.

  That is, as shown in FIGS. 15 and 16, the grooves of the end portions 32A and 32B are not limited to cutting, and may be formed by, for example, pressing. Even in such a case, in the same manner as described above, by injecting an insulating resin that is a material of the central portion 31 into the mold in which the end portions 32A and 32B are installed, the end portions 32A and 32A of the central portion 31 are injected. A groove that is fitted to the groove 63 of the end portions 32A and 32B with high strength is formed in the connection portion with 32B.

  Note that not only the bus bar 105 according to the first modification of the fifth embodiment but also the bus bars according to other embodiments, the end portions 32A and 32B and the central portion 31 of the base portion 21 are connected to each other. A groove may be formed in the portion.

  Also in the bus bar according to another embodiment, as a method of manufacturing the base portion 21, the end portions 32A and 32B are installed in the mold, and the central portion 31 is installed in the mold in which the end portions 32A and 32B are installed. A method of injecting an insulating resin as a material can be used.

  Also, in the bus bar according to another embodiment, as a method of manufacturing the base portion 21, after connecting the end portions 32A and 32B and the central portion 31, the terminal connection portions 36A and 36B are connected to the end portions 32A and 32B. The forming method can be used.

  As described above, in the bus bar 105 according to the first modification of the fifth embodiment of the present invention, the end portions 32A and 32B and the central portion 31 of the base portion 21 have one or a plurality of grooves in the connecting portions. Is formed.

  With such a configuration, the groove 63 formed in the end portions 32A and 32B meshes with the groove formed in the central portion 31 to increase the connection strength between the end portions 32A and 32B and the central portion 31. it can. Further, by forming such a groove, it is possible to prevent moisture due to condensation or the like from flowing between the end portions 32A, 32B and the central portion 31.

  Further, in the bus bar 105 according to the first modification of the fifth embodiment of the present invention, the base portion 21 is a mold in which the end portions 32A and 32B are installed after the end portions 32A and 32B are installed in the mold. It is manufactured by injecting an insulating resin, which is the material of the central portion 31.

  With such a manufacturing method, the end portions 32A, 32B and the central portion 31 can be connected with high strength without inserting a fastening member such as a screw through the end portions 32A, 32B and the central portion 31. Further, since the end portions 32A, 32B and the central portion 31 can be connected without using a fastening member in this way, for example, occurrence of a short circuit due to contact of the fastening member with metal can be prevented. Moreover, since the process of inserting the fastening member is not required, the manufacturing process and the manufacturing cost can be reduced even when many base parts 21 are manufactured.

  Further, for example, the groove 63 is formed in the connecting portion with the central portion 31 among the end portions 32A and 32B installed in the mold, so that the resin is formed in the groove of the end portions 32A and 32B when the base portion 21 is molded. A groove that engages with the groove 63 of the end portions 32 </ b> A and 32 </ b> B is formed in the central portion 31. Thereby, the groove | channel of the center part 31 can be formed easily and the connection intensity | strength with the edge parts 32A and 32B and the center part 31 can be improved further.

  Further, in the bus bar 105 according to the first modification of the fifth embodiment of the present invention, in the manufacture of the base portion 21, after the end portions 32A and 32B are connected to the central portion 31, the end portions 32A and 32B are Terminal connection portions 36A and 36B are formed.

  With such a manufacturing method, a manufacturing tolerance can be increased when the central portion 31 is formed. Further, since the terminal connecting portions 36A and 36B are formed after the length of the base portion 21 is determined in this way, for example, when the terminal connecting portions are hole-shaped, the terminal connecting portions 36A and 36B are connected to the end portions 32A and 32B. Compared to the case where the end portions 32A, 32B and the central portion 31 are connected after the formation of the terminal portions, the diameters of the terminal connection portions 36A, 36B can be reduced.

  Thereby, since the contact area of terminal 11A, 11B of storage battery 10 and terminal connection part 36A, 36B can be ensured large, even if it is a case where a high electric current is sent between storage batteries 10, the terminal of storage battery 10 The battery value per unit area at the contact portion between 11A, 11B and the terminal connection portion 36A, 36B of the base portion 21 is reduced, and the generation of heat and corrosion due to contact resistance can be suppressed.

(Modification 2)
FIG. 17 is a perspective view showing the configuration of the bus bar according to the second modification of the fifth embodiment of the present invention.

  Referring to FIG. 17, the bus bar 105 according to the second modification of the fifth embodiment of the present invention is further connected to the above-described bus bar 105 according to the fifth embodiment of the present invention by the connecting portion 22. An inspection hole 64 is formed in the upper surface. The inspection hole 64 can be brought into contact with a measurement terminal T of a tester that is an inspection device. In addition, this inspection hole 64 may be formed not only in the connection part 22 but in any one or both of the edge part 32A and the edge part 32B.

  Note that not only the bus bar 105 according to the second modification of the fifth embodiment but also the bus bars according to other embodiments, at least of the end portions 32A and 32B of the base portion 21 and the metal portion of the connection portion 22. An inspection hole 64 may be formed on one side.

  As described above, in the bus bar 105 according to the second modification of the fifth embodiment of the present invention, at least one of the end portions 32A and 32B of the base portion 21 and the connection portion 22 that is a metal portion is measured by a tester. An inspection hole 64 for contacting the service terminal T is formed.

  With such a configuration, for example, by inserting the measurement terminal T into the inspection hole 64, it is not necessary for the operator who performs the inspection to hold the measurement terminal T during the inspection, and thus the inspection can be performed efficiently. Can do.

(Modification 3)
In the bus bar 105 according to the modified example 3 of the fifth embodiment of the present invention, the materials of the end portions 32A and 32B of the base portion 21 are respectively connected among the terminals 11A and 11B of the storage battery 10 where the hot-wire operation is performed. It contains the same material as the target terminal.

  Here, when the storage battery 10 is a lithium battery, the terminal 11A on the positive electrode side is formed using aluminum, and the terminal 11B on the negative electrode side is formed using copper. In this case, the end 32A connected to the positive terminal 11A is formed using aluminum, and the end 32B connected to the negative terminal 11B is formed using copper.

  Moreover, the connection part 22 consists of a conductive metal which has the ionization tendency between the conductive metal which forms the end part 32A, and the conductive metal which forms the end part 32B. That is, as described above, when the end portion 32A is formed using aluminum and the end portion 32B is formed using copper, the connection portion 22 is a metal whose ionization tendency is between aluminum and copper, For example, it is formed using iron.

  Note that not only the bus bar 105 according to the third modification of the fifth embodiment but also the bus bars according to the other embodiments, the materials of the end portions 32A and 32B of the base portion 21 are respectively hot work. Of the terminals 11A and 11B of the storage battery 10 to which the above is performed, the same material as that of the terminal to be connected may be included.

  Further, not only in the bus bar 105 according to the third modification of the fifth embodiment but also in the bus bar according to other embodiments, the metal portion of the connection portion 22 is formed of a conductive metal that forms the end portion 32A. Further, it may be configured of a conductive metal having an ionization tendency with respect to the conductive metal forming the end portion 32B.

  As described above, in the bus bar 105 according to the third modification of the fifth embodiment of the present invention, the materials of the end portions 32A and 32B of the base portion 21 are the end portions 32A and 32A of the terminals 11A and 11B of the storage battery 10. The same material as the terminal to be connected to 32B is included.

  Here, when the material of the terminals 11A and 11B of the storage battery 10 is different from the material of the end portions 32A and 32B of the base portion 21 to which the terminals are connected, the base portion 21 is considered in consideration of the occurrence of dissimilar metal contact corrosion. It is conceivable that the same material is used for the end portions 32A and 32B and the connection portion 22 which is a metal portion. In this case, it is possible to prevent the contact of different metals between the end portions 32A and 32B and the connection portion 22, but the terminals 11A and 11B of the storage battery 10 and the end portions 32A and 32B of the base portion 21 There is a possibility that dissimilar metal contact corrosion occurs at the contact portion. In particular, since the terminals 11A and 11B of the storage battery 10 have a complicated shape, it is difficult to sufficiently prevent the inflow of moisture due to condensation or the like, and the dissimilar metal contact corrosion easily proceeds.

  On the other hand, when the material of the terminals 11A and 11B of the storage battery 10 is the same as the material of the end portions 32A and 32B of the base portion 21 to which the terminals are connected, the positive terminal 11A and the negative electrode side of the storage battery 10 are connected. Since a different metal is generally used as the material for the terminal 11B, the end portions 32A and 32B in the base portion 21 are also used as different materials. In this case, the material of the connection part 22 that is a metal part is different from the material of at least one of the end part 32A and the end part 32B. That is, it is possible to prevent foreign metal contact corrosion from occurring between the terminals 11A and 11B of the storage battery 10 and the end portions 32A and 32B of the base portion 21, but the connection portion 22 and the end portions of the base portion 21 can be prevented. There is a possibility that dissimilar metal contact corrosion occurs at the contact portions with 32A and 32B.

  Comparing the two cases described above, the contact area between the terminals 11A and 11B of the storage battery 10 and the end portions 32A and 32B of the base portion 21 is less than the connection portion 22 and the end portions 32A and 32B of the base portion 21. The contact area is often larger. For this reason, in the latter case, compared to the former case, the amount of current per unit area at the contact portion between different metals is reduced, and the occurrence of dissimilar metal contact corrosion can be suppressed.

  That is, as described above, according to the configuration in which the material of the terminals 11A and 11B of the storage battery 10 is the same as the material of the end portions 32A and 32B of the base portion 21 to which the terminals are connected, the terminals of the storage battery 10 are used. Compared with the case where the materials of 11A and 11B are different from the materials of the end portions 32A and 32B of the base portion 21 to which the terminal is connected, the occurrence of dissimilar metal contact corrosion can be suppressed.

  Further, in the bus bar 105 according to the third modification of the fifth embodiment of the present invention, the end portion 32A and the end portion 32B of the base portion 21 are made of conductive metals of different materials. Moreover, the connection part 22 which is a metal part consists of a conductive metal which has the ionization tendency between the conductive metal which is the material of the edge part 32A, and the conductive metal which is the material of the edge part 32B.

  Here, the greater the difference in ionization tendency between different metals that are in contact with each other, the greater the potential difference between the metals and the more likely that different metal contact corrosion will occur. On the other hand, since the potential difference between the connecting portion 22 and the end portion 32A and the potential difference between the connecting portion 22 and the end portion 32B can be suppressed to be small by the above-described configuration, Occurrence can be suppressed.

  Next, another embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

<Sixth Embodiment>
The present embodiment relates to a bus bar whose length can be adjusted according to the distance between a plurality of storage batteries in which a live-line operation is performed.

  18 is an exploded perspective view showing the configuration of the bus bar according to the sixth embodiment of the present invention, FIG. 19 is a perspective view of the bus bar shown in FIG. 18, and FIG. 20 is a bus bar shown in FIG. FIG. 21 is a side view of the bus bar shown in FIG.

  Referring to FIGS. 18 to 21, bus bar 106 includes an adjustment portion for adjusting the distance between end portion 32 </ b> A and end portion 32 </ b> B connected to center portion 31 and terminals 11 </ b> A and 11 </ b> B of storage battery 10.

  Specifically, the central portion 31 of the base portion 21 includes, as adjustment portions, a central portion (first central portion) 31A connected to the end portion 32A and a central portion (second central portion) connected to the end portion 32B. 31B and fixing members (first fixing members) 80 and 82, for example, screws. The central portion 31A is substantially T-shaped, and the central portion 31B is formed with a substantially T-shaped depression in which the central portion 31A is overlapped.

  The central portion 31A is formed with through holes (first central through holes) 72, 73, 74 extending in the longitudinal direction of the central portion 31A. Note that the number of through holes formed in the central portion 31A is not limited to three, and may be one, two, or four or more.

  Fastening holes (second central through holes) 75, 76, 77 are formed in the central portion 31B. The fastening hole 75 is located at a position corresponding to the through hole 72 in a state where the central portion 31A and the central portion 31B are overlapped, and the fastening hole 76 is a state where the central portion 31A and the central portion 31B are overlapped. The fastening hole 77 is located at a location corresponding to the through hole 74 in a state where the central portion 31A and the central portion 31B are overlapped.

  Moreover, the bus bar 106 can adjust the length of the connection part 22 by having an adjustment part. That is, the connection part 22 is a metal part made of a conductive metal, and as the adjustment part, a metal part (first metal part) 22A connected to the end part 32A and a metal part (second metal part) connected to the end part 32B. Metal part) 22B and a fixing member (second fixing member) 81, for example, a screw. A through hole (first metal through hole) 78 extending in the extending direction of the metal part 22A is formed in the metal part 22A, and a through hole (first hole extending in the extending direction of the metal part 22B is formed in the metal part 22B. 2 metal through holes) 79 are formed.

  The fixing member 80 is inserted into the through hole 72 and the fastening hole 75 in a state where the central portion 31A is superimposed on the central portion 31B, and fastens the central portion 31A and the central portion 31B. The fixing member 82 is inserted through the through hole 74 and the fastening hole 77 and fastens the central portion 31A and the central portion 31B in a state where the central portion 31A is superimposed on the central portion 31B.

  Thereby, center part 31A and center part 31B are fixed so that sliding is mutually possible. The distance between the end portion 32A and the end portion 32B is adjusted by sliding the center portion 31A and the center portion 31B with each other.

  Further, the fixing member 81 is in a state where the central portion 31A is overlapped with the central portion 31B, and the metal portion 22A and the metal portion 22B are overlapped with the central portion 31A, and the through hole 78 of the metal portion 22A. The through hole 79 of the metal part 22B, the through hole 73 of the center part 31A, and the fastening hole 76 of the center part 31B are inserted into the center part 31A, the center part 31B, the metal part 22A, and the metal part 22B. To do. That is, the fixing member 81 not only slidably fixes the metal part 22A and the metal part 22B but also serves as a first fixing member that slidably fixes the central part 31A and the central part 31B. ing.

  Accordingly, the metal portions 22A and 22B are slidably fixed to the base portion 21, that is, the central portions 31A and 31B, and the metal portion 22A and the metal portion 22B are fixed to be slidable with respect to each other. And the length of the connection part 22 is adjusted when these metal parts 22A and the metal part 22B slide mutually.

  As described above, in the present embodiment, the adjustment unit of the bus bar 106 enables both the adjustment of the distance between the end portion 32A and the end portion 32B and the adjustment of the length of the connection portion 22. Mechanism. However, the adjustment unit may be a mechanism that enables any one of adjustment of the distance between the end portion 32A and the end portion 32B and adjustment of the length of the connection portion 22.

[Connection work]
When connecting the terminals 11A and 11B of the storage battery 10 using the bus bar 106, first, the operator slides the central portion 21A and the central portion 21B to thereby end the end portions according to the distance between the terminals 11A and 11B. The distance between 32A and the end 32B is adjusted. Then, the operator inserts the corresponding electrode-side terminals into the terminal connection portions 36A and 36B at the end portions 32A and 32B whose distances are adjusted.

  Next, the operator adjusts the length of the connecting portion 22 and makes it contact the base portion 21. That is, the operator adjusts the length of the metal part 22 by sliding the metal part 22A and the metal part 22B according to the distance between the end parts 32A and 32B of the base part 31. Then, the worker brings the metal portions 22A and 22B into contact with the corresponding end portions 32A and 32B, respectively.

  Thereby, end part 32A, 32B of the base part 31 is electrically connected via metal part 22A, 22B. That is, the terminals 11A and 11B of the storage battery 10 connected to the end portions 32A and 32B are electrically connected to each other via the end portions 32A and 32B of the base portion 21 and the metal portions 22A and 22B.

  It should be noted that not only the bus bar 106 according to the sixth embodiment but also the bus bars according to other embodiments are used for adjusting the distance between the end portion 32A and the end portion 32B and adjusting the length of the connecting portion 22. An adjustment unit may be provided to enable at least one of them.

  As described above, the bus bar 106 according to the sixth embodiment of the present invention includes the adjustment unit for adjusting the distance between the end portion 32A and the end portion 32B.

  With such a configuration, even when the distance between the storage batteries 10 is different, the connection between the storage batteries 10 can be performed using the same base portion 21, and thus versatility can be improved.

  Moreover, when it does not have an adjustment part as described above, for example, by increasing the diameter of the terminal connection parts 36A and 36B formed at the end parts 32A and 32B, it is possible to cope with the difference in distance between the storage batteries 10. It is possible to do. However, with the configuration having the adjustment portion as described above, the diameters of the terminal connection portions 36A and 36B can be reduced, and the terminals 11A and 11B of the storage battery 10 are compared with the case where the diameters of the terminal connection portions 36A and 36B are large. And the area of the contact portion between the end portions 32A and 32B of the base portion 21 can be increased. For this reason, the amount of current per unit area at the contact portion between the terminals 11A and 11B of the storage battery 10 and the end portions 32A and 32B of the base portion 21 is reduced, and heat generation and corrosion due to contact resistance can be suppressed.

  Further, in the bus bar 106 according to the sixth embodiment of the present invention, the central portion 31 has a central portion 31A connected to the end portion 32A as an adjustment portion, and a central portion 31B connected to the end portion 32B. Fixing members 80, 81, 82 are included. Further, through holes 72, 73, 74 are formed in the central portion 31A, and fastening holes 75, 76, 77 are formed in the central portion 31B. The fixing members 80, 81, 82 are inserted through the through holes 72, 73, 74 and the fastening holes 75, 76, 77, respectively, and fix the central portion 31A and the central portion 31B so as to be slidable with respect to each other.

  With such a configuration, the distance between the end 32A and the end 32B can be easily adjusted by sliding the center 31A and the center 31B with each other, improving work efficiency and reducing work mistakes. Can be achieved.

  In the bus bar 106 according to the sixth embodiment of the present invention, the metal part 22A connected to the end part 32A and the metal connected to the end part 32B as the adjustment part are connected to the connection part 22 that is a metal part. The part 22B and the fixing member 81 are included. A through hole 78 is formed in the metal portion 22A, and a through hole 79 is formed in the metal portion 22B. The fixing member 81 is inserted through the through hole 78 and the through hole 79, and fixes the metal part 22A and the metal part 22B so as to be slidable with respect to each other.

  With such a configuration, even if the distance between the storage batteries 10 is different, not only the base portion 21 but also the same connection portion 22 can be used to electrically connect the storage batteries 10. Can be further enhanced.

  The above embodiment should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 10 Storage battery 11A, 11B Terminal 12 Storage battery board 21 Base part 22 Connection part 22A Metal part (1st metal part)
22B Metal part (second metal part)
23, 41, 47 Fastening member 31 Central portion 31A Central portion (first central portion)
31B center (second center)
32A, 32B End portion 33A, 33B Insertion port 34 Opening portion 35, 37, 44, 51, 61, 62 Fastening hole 36A, 36B Terminal connection portion 42 Metal portion 43 Lid portion 45, 46 Nut 52A, 52B Metal portion 53 Insulation Portion 54 Fuse holder 55A, 55B Holder end 56 Fuse 57 Fuse clamping portion 63 Groove 64 Inspection hole 72, 73, 74 Through hole (first central through hole)
75, 76, 77 Fastening hole (second central through hole)
78 Through hole (1st metal through hole)
79 Through hole (second metal through hole)
80, 82 fixing member (first fixing member)
81 fixing member (first fixing member, second fixing member)
101, 102, 103, 104, 105, 106 Busbar T Measurement terminal

Claims (19)

A bus bar used in a device that performs hot-wire work,
A central portion made of an insulator and a base portion having a plurality of ends made of a conductive metal;
A connection portion having a metal portion made of a conductive metal,
In a state where the connection portion is in contact with the base portion, the end portions are electrically connected to each other via the connection portion, and in a state in which the connection portion is not in contact with the base portion, the center A bus bar in which the ends are electrically insulated by a portion. The bus bar further includes:
A fastening member for abutting the connecting portion against the base portion by fastening the connecting portion and the base portion;
The bus bar according to claim 1, wherein the fastening member fastens the metal part of the connection part and the central part of the base part. The bus bar further includes:
A fastening member for abutting the connecting portion against the base portion by fastening the connecting portion and the base portion;
The connecting portion further includes:
Having an insulating part made of an insulator;
The bus bar according to claim 1, wherein the fastening member fastens the insulating portion of the connection portion and the central portion of the base portion. An opening is formed in the central portion of the base portion,
The ends of the base part are connected via the central part, and are exposed from the opening of the central part,
The bus bar according to any one of claims 1 to 3, wherein the end portions are electrically connected to each other through the metal portion by fitting the connection portion into the opening portion. The connecting portion further includes:
5. The bus bar according to claim 4, further comprising a lid that covers the opening and the periphery of the opening in a state where the connection is fitted into the opening of the base.   The bus bar according to claim 4 or 5, wherein the opening of the base portion and the connection portion are fitted with a substantially intermediate fit. The end portions of the base portion are connected via the central portion,
The end portions are electrically connected to each other through the connecting portion by contacting the metal portion of the connecting portion with the protruding portion from the central portion of each of the plurality of end portions. The bus bar according to any one of claims 1 to 3. The connection part has a plurality of the metal parts spaced apart from each other,
Each metal part is electrically connected to a fuse holder to which a fuse can be attached and detached,
When the metal part is in contact with the end part of the base part and the fuse is attached to the fuse holder, the end parts of the base part are the metal part and the fuse. The bus bar according to any one of claims 1 to 7, wherein the bus bar is electrically connected to the bus bar. A fuse holder to which a fuse can be attached and detached is electrically connected to each of the end portions of the base portion,
The connecting portion is a fuse attached to the fuse holder,
The bus bar according to any one of claims 1 to 7, wherein the end portions of the base portion are electrically connected to each other through the fuse in a state where the fuse is attached to the fuse holder. .   The material of the said edge part of the said base part contains the same material as the terminal which is the connection object of the said edge part among the terminals of the said apparatus in which a hot-wire operation | work is performed. Busbar according to item. The plurality of end portions of the base portion include a first end portion and a second end portion,
The first end and the second end are made of different conductive metals,
The metal part is made of a conductive metal having an ionization tendency between a conductive metal that is a material of the first end part and a conductive metal that is a material of the second end part. Item 11. The bus bar according to any one of items 10. The plurality of end portions of the base portion include a first end portion and a second end portion connected to the first end portion via the central portion,
The bus bar further includes:
The bus bar according to any one of claims 1 to 11, further comprising an adjustment portion for adjusting a distance between the first end portion and the second end portion. The central portion of the base portion includes, as the adjustment portion, a first central portion connected to the first end portion, a second central portion connected to the second end portion, and a first fixing member. Contains
A first central through hole is formed in the first central portion; a second central through hole is formed in the second central portion;
The first fixing member is inserted into the first central through hole and the second central through hole, and slidably fixes the first central part and the second central part to each other. Busbar. The metal part of the connection part includes, as the adjustment part, a first metal part connected to the first end part, a second metal part connected to the second end part, and a second fixing member. Contains
A first metal through hole is formed in the first metal part, a second metal through hole is formed in the second metal part,
The said 2nd fixing member is penetrated by the said 1st metal through hole and the said 2nd metal through hole, and fixes the said 1st metal part and the said 2nd metal part so that sliding is mutually possible. 13. Busbar according to 13.   The bus bar according to any one of claims 1 to 14, wherein one or a plurality of grooves are formed in a connecting portion of the end portion and the central portion of the base portion.   The inspection hole for making the terminal for a measurement of an inspection apparatus contact is formed in at least one among the said edge part of the said base part, and the said metal part of the said connection part. The bus bar according to item 1. The bus bar further includes:
A fastening member for abutting the connecting portion against the base portion by fastening the connecting portion and the base portion;
The bus bar according to any one of claims 1 to 16, wherein the fastening member is provided on at least one of the base portion and the connection portion. A bus bar manufacturing method used in an apparatus in which a hot wire operation is performed,
The bus bar electrically connects the end portions of the base portion via a central portion made of an insulator, a base portion having a plurality of end portions made of conductive metal, and a metal portion made of conductive metal. With a connecting part to be connected,
Installing the end in a mold;
Molding the base portion having a plurality of end portions connected to the central portion by injecting an insulating resin, which is a material of the central portion, into the mold in which the end portions are installed; A bus bar manufacturing method. The bus bar manufacturing method further includes:
19. The method according to claim 18, further comprising: forming a terminal connection portion for connecting a terminal of the device on which a hot wire operation is performed after connecting a plurality of the end portions to the central portion. Bus bar manufacturing method.

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