JP5042480B2 - Power supply external connection terminal structure - Google Patents

Description

  The present invention relates to an external connection terminal structure that connects a terminal terminal connected to a power storage unit or a power generator in a power supply device and an external terminal that supplies power from the terminal terminal to the outside.

  In recent years, a flat battery cell such as a lithium ion secondary battery and an electric double layer capacitor that has a substantially flat rectangular shape, a fuel cell that directly converts chemical energy of fuel into electric energy, and in particular, an ion exchange membrane to The development of power generator cells such as a polymer electrolyte fuel cell that separates the cathode electrode has advanced, and it is expected as a power source for various devices due to its high energy density and compactness.

  When such power storage cells and power generation cells are housed in the case for the number of cells according to voltage specifications, capacity specifications, etc. and used as a packaged battery pack, power is supplied to an external load or charged from the outside. A connector for supplying industrial power is required to have high mechanical and electrical reliability.

For example, in Patent Document 1, a stepped portion having a non-uniform cross-sectional shape and a screw portion are provided on a terminal electrode that penetrates a lid on the upper part of a battery case of an automobile battery, and an annular connector of a wiring cord is connected to the terminal electrode. A technique for improving the reliability of mechanical and electrical connection is disclosed as a strong connection by fitting into a stepped portion so as to be inserted into a screw portion, and screwing and tightening a nut to the screw portion. .
Japanese Patent Laid-Open No. 8-111217

  However, it is necessary to adapt not only mechanical / electrical reliability but also mounting conditions and specifications as an external connection connector of the power supply device, particularly when mounted on an electric vehicle such as a hybrid vehicle or an electric vehicle. Therefore, the orientation of the connector must be individually set according to the installation space in the vehicle, the wiring layout of the cables, and the like. For this reason, conventionally, the entire power supply device often has a custom specification that matches the specifications for the customer, and this has resulted in poor versatility, leading to an increase in cost.

  The present invention has been made in view of the above circumstances, while ensuring mechanical and electrical reliability, can flexibly respond to the specifications of external connections, and is external to a power supply device having excellent versatility. The object is to provide a connection terminal structure.

In order to achieve the above object, an external connection terminal structure of a power supply device according to the present invention includes a termination terminal connected to a power storage unit or a power generation unit in the power supply device, and an external connection terminal that supplies power from the termination terminal to the outside. The terminal terminal is formed by two bus bars having different polarities with the center of the circle or polygon and the circumference or side of the circle as connection positions, and the external connection The terminal is configured such that the other terminal can rotate around one terminal, and can be connected to the two bus bars at the center of the circle or polygon and a predetermined position on the circumference or side of the polygon. It is formed by two connector bodies having terminal boards .

  The external connection terminal structure of the power supply device according to the present invention ensures mechanical and electrical reliability and can flexibly respond to the specifications of external connection, improving versatility and contributing to cost reduction. It becomes possible to do.

  Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 relate to a first embodiment of the present invention, FIG. 1 is an overall view showing an external connection terminal of a power supply device, FIG. 2 is an explanatory view when changing the direction of the external connection terminal, and FIG. FIG. 4 is an explanatory view showing a first example of attachment of external connection terminals, FIG. 5 is an explanatory view showing a second example of attachment of external connection terminals, and FIG. 6 is an external connection terminal. It is explanatory drawing which shows the 3rd example of attachment.

  In FIG. 1, reference numeral 1 denotes a power supply device in which a plurality of power storage cells such as lithium ion batteries and electric double layer capacitors, or a plurality of power generation cells such as fuel cells are connected and housed in a casing 1a. The terminal box 1b is provided with a terminal box 1b at the front portion of the housing 1a. Various circuits for controlling the power supply are provided in the terminal box 1b, and the power of the power supply device 1 is supplied to the outside or externally. A power supply terminal portion 10 as an external connection terminal for supplying charging power from is provided on the end face side.

  The power supply terminal portion 10 is for electrically connecting the cylindrical connector bodies 11 and 12 and the connector bodies 11 and 12 into / from which power supply connection cables are inserted / removed and the terminal terminals of a plurality of power storage cells or power generation cells. Terminal board 13, 14, terminal block 15 made of an insulating material to which the connector main bodies 11, 12 are attached, and the like. The connector main body 11 corresponds to the casing specifications, installation layout, wiring layout, etc. of the power supply device 1. , 12 has a versatile external connection terminal structure that can flexibly change the direction of the cable connection port (cable insertion / removal direction).

  Although the connector bodies 11 and 12 have basically the same structure, hereinafter, for convenience, the connector bodies 11 and 12 are distinguished from each other as a positive electrode plug and a negative electrode plug.

  In this embodiment, it is a terminal structure in which the orientation of the connector can be changed up, down, left and right. For example, as shown in FIG. 2, the terminal terminals of a plurality of power storage cells or power generation cells in the power supply device 1 are A bus bar 20 having a shape or a bus bar 21 having a rectangular shape is fixed in the terminal box 1b. The connector main bodies 11 and 12 have the positions S +, S− (S ′ +, S′−) indicated by squares in FIG. By setting the connection position with the connector bodies 11 and 12 at positions T + and T− (T ′ + and T′−) indicated by triangles, it is possible to connect and disconnect the connection cable while ensuring mechanical and electrical reliability. The direction can be a horizontal direction or a vertical direction.

  That is, when the circular bus bar 20 is represented by two ring-shaped bus bars 20a and 20b arranged concentrically with respect to the center O, the inner bus bar 20a is a positive pole and the outer bus bar 20b is a negative pole. The terminal plate 13 of the connector main body 11 is fastened to the position S + of the positive pole bus bar 20a via the bolt 16, and the terminal plate 14 of the connector main body 12 is bolted to the position S- of the negative pole bus bar 20b. Conclude through. Thereby, the connector main bodies 11 and 12 can be arrange | positioned toward the same horizontal direction. Further, the terminal plate 13 of the connector main body 11 is fastened to the position T + of the positive pole bus bar 20a via the bolt 16, and the terminal plate 14 of the connector main body 12 is fixed to the position T- of the negative pole bus bar 20b. The connector main bodies 11 and 12 can be arrange | positioned toward the same vertical direction by fastening via.

  Further, the rectangular bus bar 21 is represented by two rectangular frame-shaped bus bars 21a and 21b arranged concentrically with respect to the center O, and the inner bus bar 21a is a positive pole and the outer bus bar 21b is a negative pole. Then, similarly, by fixing the connector main bodies 11 and 12 corresponding to the position S ′ + on the + pole side and the position S′− on the −pole side indicated by a rectangle, the connector bodies 11 and 12 are placed in the same horizontal direction. The connector main bodies 11 and 12 can be fixed in correspondence with a positive pole side position T ′ + and a negative pole side position T′− indicated by a triangle. The main bodies 11 and 12 can be arranged in the same vertical direction.

  In addition, the power supply terminal part 10 is attached so that the whole terminal block 15 can be removed from the terminal box 1b at the time of emergency. That is, the strength of the bus bars 20 and 21 with respect to the fastening force of the bolts 16 and 17 is set to a predetermined value or less, or instead of fastening with the bolts 16 and 17, the terminal plates 13, 14 can be fixed to the bus bars 20 and 21 to provide a function as a safety plug for disconnecting the power source and the load in an emergency.

  FIG. 3 shows a specific configuration example of the bus bar 21, in which a + pole bus bar 25 and a −pole bus bar 26 made of a metal plate material are bent to form an elongated attachment portion 25 a on the front end side of the bus bar 25. The bifurcated mounting portions 26a and 26b of the bus bar 26 are disposed on both sides of the bus bar 26. The mounting portion 25a of the bus bar 25 is provided with a screw hole 27, and the mounting portions 26a and 26b of the bus bar 26 are respectively screw holes 28a, 28b and 28c at diagonal positions of a rectangular shape with the screw hole 27 as the center. , 28d. Thus, a rectangular mounting surface for mounting the connector main bodies 11 and 12 via the terminal plates 13 and 14 is formed, and the connector base 15 is mounted by changing the orientation of the terminal block 15 up, down, left and right on the rectangular mounting surface. The direction of the cable connection port of the main bodies 11 and 12 can be flexibly set up, down, left and right.

  In the mounting example shown in FIG. 3, the terminal plate 13 of the connector main body 11 is fastened to the screw hole 27 of the bus bar 25 via the bolt 16, and the terminal plate 14 of the connector main body 12 is connected to the screw hole 28 a of the bus bar 26 with the bolt 17. It is concluded through The screw hole 28a of the bus bar 26 is located on the upper left diagonally with the screw hole 27 of the bus bar 25 as the center, and the cable connection ports of the connector bodies 11 and 12 can be arranged facing rightward. .

  4 shows a state in which the entire terminal block 15 including the connector main bodies 11 and 12 is rotated 90 degrees clockwise around the screw hole 27 of the bus bar 25 from the position shown in FIG. The connector main body 11 is fastened to the screw hole 27 of the bus bar 25, and the connector main body 12 is fastened to the screw hole 28 b located on the right side of the screw hole 28 a of the bus bar 26. Thereby, the cable connection port of the connector main bodies 11 and 12 can be arrange | positioned toward the downward direction.

  Further, when the entire terminal block 15 is rotated 90 degrees clockwise from the position shown in FIG. 4, the mounting position shown in FIG. 5 is obtained. In this mounting position, the connector body 11 is fastened to the screw hole 27 of the bus bar 25, and the connector body 12 is fastened to the screw hole 28 c located below the screw hole 28 b of the bus bar 26. The cable connection port can be arranged facing left.

  Similarly, when the entire terminal block 15 is rotated 90 degrees clockwise from the position shown in FIG. 5, the attachment position shown in FIG. 6 is obtained. In this mounting position, the connector main body 11 is fastened to the screw hole 27 of the bus bar 25, and the connector main body 12 is fastened to the screw hole 28d located on the right side of the screw hole 28c of the bus bar 26. The connection port can be arranged facing upward.

  As described above, in the present embodiment, the direction of the cable connection port of the connector main bodies 11 and 12 can be flexibly changed according to the installation space of the power supply device, the wiring layout of the external connection cable, and the like. Customer requirements can be satisfied while ensuring mechanical and electrical reliability, and versatility can be improved and product costs can be reduced.

  Next, a second embodiment of the present invention will be described. FIG. 7 is an explanatory diagram of an external connection terminal according to the second embodiment of the present invention.

  The second form is a terminal structure in which the connector bodies 11A and 12A similar to the connector bodies 11 and 12 of the first form can be swung around the rotation axis. As shown in FIG. A hinge structure is employed in which both end portions of the shaft body 30 are sandwiched between shaft plates 33 and 34 by terminal plates 31 and 32 having a substantially L shape. The shaft body 30 is insulated at a substantially central portion, and terminal plates 35 and 36 fixed to the connector main bodies 11A and 12A are fastened together between the end surfaces of both ends and the terminal plates 31 and 32.

  The terminal plates 31 and 32 fastened to both ends of the shaft body 30 are connected to the circular bus bar 20 or the rectangular bus bar 21 described above, and the positions S + and S− (S ′ shown by squares in FIG. The terminal plates 31 and 32 are fixed at positions T + and T− (T ′ + and T′−) indicated by +, S′−) or a triangle, and the connector main bodies 11A and 12A are rotated around the shaft body 30. By fixing at a predetermined position, the direction of the cable connection port of the connector main bodies 11A and 12A can be set three-dimensionally.

  In the second mode, the direction of the cable connection port of the connector main bodies 11A and 12A can be changed with a higher degree of freedom than the first mode, and versatility can be further improved.

The whole figure which shows the external connection terminal of a power supply device concerning 1st Embodiment of this invention. Same as above, explanatory diagram when changing the direction of the external connection terminal As above, an explanatory diagram showing a specific example of a terminal bus bar As above, an explanatory view showing a first mounting example of the external connection terminal Explanatory drawing which shows the 2nd example of attachment of an external connection terminal same as the above Explanatory drawing which shows the 3rd example of attachment of an external connection terminal same as the above. Explanatory drawing of an external connection terminal concerning 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power supply device 10 Power supply terminal part 11, 12, 11A, 12A Connector main body 20, 21 Bus bar 30 Shaft body

Claims (3)

An external connection terminal structure for connecting a terminal terminal connected to a power storage unit or a power generation unit in a power supply device and an external connection terminal for supplying electric power from the terminal terminal to the outside,
The termination terminal is formed by two bus bars having different polarities with the center of the circle or polygon and the circumference or side of the polygon as connection positions,
The external connection terminal is configured such that the other terminal is rotatable about one terminal, and the two bus bars are respectively arranged at a center of the circle or polygon and a predetermined position of the circumference or side of the polygon. An external connection terminal structure for a power supply device, characterized in that the external connection terminal structure is formed of two connector bodies each having a connectable terminal plate . 2. The external connection terminal structure for a power supply device according to claim 1, wherein the terminal plate of the connector body is formed so as to be separable from the bus bar . 3. The external connection terminal structure of a power supply device according to claim 1, wherein the two connector main bodies are attached to both ends of the shaft body so as to be swingable.

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