JP2009187813A - Power supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply device which can be downsized. <P>SOLUTION: The power supply device 1 electrically connected with an external apparatus 20 at one end face side is provided with a power source module 10 including a plurality of power source bodies arrayed in a direction nearly orthogonally crossing the one end face and electrically connected with each other, and an arresting member extended in an arrayal direction of the plurality of power source bodies for arresting the plurality of power source bodies. The arresting member is provided with a conductive part for electrically connecting a given power source body in the power source module and the external equipment. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power supply device having a configuration that is electrically connected to an external device.

  Conventionally, there is a battery pack equipped with a plurality of single cells mounted on a vehicle (see, for example, Patent Documents 1 and 2). This vehicle is called a so-called hybrid vehicle, and uses the output of a battery pack (a plurality of single cells) to drive the vehicle or charge the battery pack with regenerative energy of the vehicle.

  In the power pack structure described in Patent Document 1, the assembled battery and the device are arranged in parallel. Then, the positive terminal of the assembled battery and the terminal portion arranged in the device are connected by a total plus cable, and the negative terminal of the assembled battery and the terminal portion in the device are connected by a total minus cable. Yes.

Here, since the positive terminal of the assembled battery is located farther from the device than the negative terminal, the total plus cable connected to the positive terminal of the assembled battery passes through the upper surface of the assembled battery, It is connected to the terminal part.
JP 2007-48515 (FIG. 1 etc.) JP 2004-319232 A Japanese Patent Laid-Open No. 2003-242956

  However, when the total plus cable is arranged on the upper surface of the assembled battery as in the power supply pack structure described in Patent Document 1, the case that accommodates the assembled battery is enlarged by the outer diameter of the total plus cable. End up.

  Therefore, an object of the present invention is to provide a power supply device that can be miniaturized without increasing the number of components.

  The present invention is a power supply device that is electrically connected to an external device on one end face side, and includes a power supply module that includes a plurality of power supplies that are arranged in a direction substantially orthogonal to the one end face and electrically connected to each other. And a restraining member extending in the arrangement direction of the plurality of power supply bodies and restraining the plurality of power supply bodies. The restraining member has a conductive portion for electrically connecting a predetermined power source in the power module and an external device.

  Here, the predetermined power supply body may be a power supply body arranged at a position farthest from the one end face in the arrangement direction among the plurality of power supply bodies. Thereby, compared with the structure which electrically connects the power supply body and the external apparatus which are most distant from one end surface using a wiring, the space for arrange | positioning wiring can be saved significantly. Further, the predetermined power supply body can be a power supply body used for taking out the output of the power supply module. Thereby, the space for arranging the wiring used for taking out the output of the power supply module can be reduced.

  Further, the restraining member is constituted by a first restraining member and a second restraining member, and the first restraining member is electrically connected to the positive terminal of the first power supply body used for taking out the output of the power supply module. It is possible to connect and electrically connect the second restraining member to the negative terminal of the second power source used to extract the output of the power module. Thereby, the output of a power supply module can be easily taken out using the first and second restraining members.

  On the other hand, the restraining member can be electrically connected to a connection member electrically connected to an external device in a region facing the one end surface. Thereby, the structure which electrically connects a power supply device with an external apparatus in this one end surface side can be achieved. Here, by providing the restraining member with an insulating portion that covers the conductive portion, it is possible to prevent electrical connection to a power supply body other than the predetermined power supply body.

  Here, the external device can be arranged adjacent to one end face of the power supply device. Examples of the external device include a device that operates using the output of the power supply module. Also, a device for switching between energization and non-energization between two power supply bodies electrically connected to each other in the power supply module can be used.

  According to the present invention, since the predetermined power supply body and the external device are electrically connected using the restraining member for restraining the plurality of power supply bodies, the wiring separate from the restraining member is used. Compared to the case where a predetermined power source and an external device are electrically connected, the space for arranging the wiring can be omitted. Thereby, a power supply device can be reduced in size. Moreover, in the present invention, the restraining member has a function of electrically connecting a predetermined power source and an external device in addition to the original function for restraining a plurality of power sources. The cost of the apparatus can also be reduced.

  Examples of the present invention will be described below.

  A battery pack (power supply device) that is Embodiment 1 of the present invention will be described with reference to FIG. Here, FIG. 1 is a schematic diagram showing the configuration of the battery pack and the junction box. The battery pack and junction box of the present embodiment are mounted on a vehicle. The Z axis indicates the direction of gravity, and the X axis and the Y axis are axes that are orthogonal to the Z axis and orthogonal to each other.

  The battery pack 1 of the present embodiment includes a battery unit 10 and a pack case 11 that houses the battery unit 10. A junction box 20 accommodating an external device is disposed at a position adjacent to the battery pack 1 in the X direction. The battery unit 10 and an external device housed in the junction box 20 are electrically connected via wiring as will be described later. The pack case 11 and the junction box 20 are fixed to the vehicle body by fastening members such as bolts. Here, examples of the vehicle body include a vehicle floor panel and a side member.

  Next, a specific configuration of the battery unit 10 will be described with reference to FIG. Here, FIG. 2 is an exploded perspective view of the battery unit.

  The battery unit 10 includes a battery module (power supply module) 12 in which a plurality of single cells (power supply bodies) 13 are arranged in the X direction. Here, a spacer 14 for guiding a cooling gas (heat exchange medium) to the surface of the unit cell 13 is disposed between the unit cells 13 adjacent in the X direction. That is, the spacer 14 forms a passage for allowing the cooling gas to pass between the unit cells 13 adjacent in the X direction. The spacer 14 can be formed of a resin such as polypropylene.

  Here, by using a duct and a fan, for example, air existing in a vehicle interior can be guided between adjacent unit cells 13 as a cooling gas. The interior of the vehicle means a space in which a passenger gets in or a space for storing luggage (so-called luggage compartment). Note that a gas or liquid (heat exchange medium) having a component other than air can be guided between adjacent unit cells 13.

  When the cooling gas is supplied to the battery unit 10, the gas flows between the adjacent unit cells 13 through the spacer 14. The gas introduced between the adjacent unit cells 13 exchanges heat with the unit cells 13, thereby depriving the heat generated in the unit cells 13 by charging / discharging or the like. Then, the gas that has passed between the adjacent unit cells 13 is discharged to the outside of the battery pack 10. Thereby, the cell 13 can be cooled (heat radiation).

  Here, a secondary battery such as a nickel metal hydride battery or a lithium ion battery is used as the single battery 13. An electric double layer capacitor may be used instead of the secondary battery.

  A positive electrode terminal 13 a and a negative electrode terminal 13 b are provided on the top of each unit cell 13. These terminals 13 a and 13 b are connected to a power generation element housed inside the unit cell 13. Here, the power generation element is an element that can be charged and discharged, and includes, for example, a positive electrode plate, a negative electrode plate, a separator, and an electrolytic solution.

  A positive electrode terminal 13a in each unit cell 13 is electrically connected to a negative electrode terminal 13b in another unit cell 13 arranged adjacent to the unit cell 13 in the X direction via a bus bar (not shown). . Moreover, the negative electrode terminal 13b in each single cell 13 is electrically connected to the positive electrode terminal 13a in another single cell 13 arranged adjacent to the single cell 13 in the X direction via a bus bar (not shown). ing.

  Thus, the terminals 13a and 13b of each unit cell 13 are electrically connected, whereby the plurality of unit cells 13 constituting the battery module 12 are electrically connected in series. Thereby, a desired output can be obtained as the battery module 12. In addition, the cell 13 electrically connected in parallel may be included.

  At both ends in the X direction of the battery module 12, a pair of end plates 15 for sandwiching the plurality of single cells 13 constituting the battery module 12 are disposed. The end plate 15 has a predetermined thickness (length in the X direction) in order to ensure strength, and an opening 15a is formed in order to reduce the weight.

  Further, a hole 15b is formed in the end plate 15, and by inserting a fastening member (not shown) such as a bolt into the hole 15b, the end plate 15 (battery unit 10) is attached to the pack case 11. Can be fixed to. Of the plurality of single cells 13 constituting the battery module 12, some of the single cells 13 are also formed with holes for attaching fastening members such as bolts.

  A pair of restraining bands (an upper restraining band 16a and a lower restraining band 16b as restraining members) are fixed to the end plates 15 located at both ends of the battery module 12 from the vertical direction (Z direction). Specifically, two upper restraint bands 16 a and two lower restraint bands 16 b are fixed to the battery module 12.

  The upper restraint band 16a includes an intermediate portion 16a1 disposed along the upper surface of the battery module 12, and an end portion 16a2 formed by bending with respect to the intermediate portion 16a1 and disposed along the end surface in the X direction of the end plate 15. have. Here, the intermediate portion 16a1 extends in the arrangement direction (X direction) of the plurality of single cells 13. The lower restraint band 16b is an intermediate portion 16b1 disposed along the lower surface of the battery module 12, and an end portion that is bent with respect to the intermediate portion 16b1 and is disposed along the end surface of the end plate 15 in the X direction. 16b2. Here, the intermediate portion 16b1 extends in the arrangement direction (X direction) of the plurality of unit cells 13.

  The end portion 16a2 in the upper restraint band 16a and the end portion 16b2 in the lower restraint band 16b are connected by a rivet (not shown). Thereby, the battery module 12 is restrained by the upper restraint band 16a and the lower restraint band 16b. In addition, a force acting in a direction in which the plurality of single cells 13 are brought closer to each other is generated via the end plate 15.

  As shown in FIG. 3, among the battery modules 12, the negative terminal 13 b in the unit cell 13 </ b> A located at one end in the X direction is used to extract the entire output of the battery module 12. Here, FIG. 3 is a schematic view of the battery unit 10 as viewed from above. The single cell 13 </ b> A is a single cell 13 that is located farthest from the junction box 20 among the plurality of single cells 13 constituting the battery module 12. Further, the positive electrode terminal 13 a in the unit cell 13 </ b> A is electrically connected to the unit cell 13 </ b> A via the bus bar 30 and the negative electrode terminal 13 b in the unit cell 13 arranged adjacent to each other in the X direction. The bus bar 30 is made of a conductive material (for example, a metal such as iron or aluminum).

  In FIG. 3, the positive terminal 13 a in the unit cell 13 </ b> B located at the other end in the X direction among the battery modules 12 is used for taking out the entire output in the battery module 12. Here, the unit cell 13 </ b> B is the unit cell 13 located closest to the junction box 20 among the plurality of unit cells 13 constituting the battery module 12. Further, the negative electrode terminal 13b in the unit cell 13B is electrically connected to the unit cell 13B via the bus bar 30 and the positive electrode terminal 13a in the unit cell 13 arranged adjacent to each other in the X direction.

  In the battery unit 10 of the present embodiment, the negative electrode terminal 13b of the unit cell 13A is electrically connected to the upper restraining band 16a via the bus bar 31. In addition, the positive terminal 13 a of the unit cell 13 </ b> B is electrically connected to the upper restraining band 16 a via the bus bar 32. Here, as shown in FIG. 3, the upper restraint band (first restraining member) 16a to which the negative electrode terminal 13b of the cell 13A is connected and the upper restraint band (first restraint) to which the positive electrode terminal 13a of the cell 13B is connected. And the second restraining member 16a are arranged at positions different from each other.

  Moreover, the wiring 40a is electrically connected to the edge part 16a2 in the upper restraint band 16a to which the negative electrode terminal 13b of the unit cell 13A is connected. Moreover, the wiring 40b is connected to the edge part 16a2 in the upper restraint band 16a to which the positive electrode terminal 13a of the unit cell 13B is connected. The wirings 40a and 40b extend to the junction box 20 side, and are connected to an external device (terminal portion) disposed inside the junction box 20 as will be described later.

  Here, the connection structure between the negative electrode terminal 13b of the unit cell 13A and the upper restraining band 16a will be described in detail with reference to FIG. FIG. 4 is a schematic view showing the connection structure, and is a cross-sectional view in the XZ plane.

  The upper restraint band 16a includes a conductive portion 16c formed of a conductive material and an insulating portion 16d formed of a material having an insulating property. The insulating part 16d covers the other part of the conductive part 16c except for the contact part with the bus bar 31. The bus bar 31 is made of a conductive material (for example, a metal such as iron or aluminum), and is fixed to the conductive portion 16c in the upper restraining band 16a. Here, the bus bar 31 and the conductive portion 16c can be fixed to each other by using a fastening member using a bolt or the like or performing welding.

  Thereby, the electric power output from the negative electrode terminal 13b of the unit cell 13A flows through the bus bar 31 to the conductive portion 16c in the upper restraint band 16a. In addition, when charging with respect to the battery module 12 (the several cell 13), the flow of electricity becomes reverse. That is, electric power is supplied to the unit cell 13A through the conductive portion 16c in the upper restraining band 16a. Here, the cross-sectional area (cross-sectional area shown in FIG. 4) of the conductive part 16c necessary for ensuring energization through the conductive part 16c can be determined by appropriately selecting the material forming the conductive part 16c. it can.

  The conductive portion 16c extends to the side where the unit cell 13B is located, and is electrically connected to the wiring 40a at a portion where the end portion 16a2 of the upper restraining band 16a is located. Here, in the upper restraint band 16a, the conductive portion 16c is exposed at the contact portion with the wiring 40a, and is electrically connected to the wiring 40a.

  As shown in FIG. 5, the wiring 40 a is connected to a terminal portion 21 as an external device arranged inside the junction box 20. The terminal portion 21 is connected to a DC / DC converter (not shown) disposed inside the junction box 20. Thereby, the output of the battery module 12 is converted into a predetermined voltage value by the DC / DC converter. And the output of a DC / DC converter is input into the inverter for driving the motor used for driving | running | working of a vehicle.

  On the other hand, the connection structure between the positive terminal 13a of the unit cell 13B and the upper restraint band 16a is the same as the structure shown in FIG. That is, the upper restraint band 16a connected to the unit cell 13B is similar to the upper restraint band 16a connected to the unit cell 13A, and includes a conductive part formed of a conductive material, and an insulating part covering the conductive part. have.

  Here, of the conductive portion in the upper restraint band 16a, the portion connected to the bus bar 32 is not covered with the insulating portion but exposed. As a result, the positive terminal 13a of the unit cell 13B is electrically connected to the conductive portion in the upper restraining band 16a via the bus bar 32. And the bus-bar 32 and the electroconductive part can be mutually fixed by using the fastening member using a volt | bolt etc. or performing welding.

  Moreover, the upper restraint band 16a electrically connected to the unit cell 13B is connected to the wiring 40b at a portion where the end portion 16a2 is located. Here, in the upper restraint band 16a, the conductive portion is exposed at the contact portion with the wiring 40b, and is electrically connected to the wiring 40b. The wiring 40 b is connected to the terminal portion 21 disposed inside the junction box 20.

  The wirings 40a and 40b may have any structure as long as the surface of the conductive member is covered with an insulating member. For example, the wirings 40a and 40b may be cords as electric wires, or may be constituted by a metal plate material. Further, the wirings 40a and 40b can be formed integrally with the upper restraint band 16a.

  In the conventional battery pack (the battery pack described in Patent Document 1), the negative electrode wiring (so-called total minus cable) is connected to the negative electrode terminal 13b of the single cell 13A, and the positive electrode is connected to the positive electrode terminal 13a of the single cell 13B. (So-called total plus cable) is connected. In this configuration, as shown in FIG. 6, spaces W <b> 1 and W <b> 2 for arranging the above-described negative electrode and positive electrode wirings must be secured above the battery module 12 (unit cell 13). In this case, the battery pack 1 is enlarged in the Z direction by the spaces W1 and W2.

  On the other hand, in this embodiment, the output of the battery module 12 is taken out by using the upper restraining band 16a. Thereby, the spaces W1 and W2 can be omitted, and the battery pack 1 can be downsized in the Z direction.

  Further, in this embodiment, the upper part is used as a part of the wiring for electrically connecting the output terminal of the battery module 12 (the negative terminal 13b of the unit cell 13A and the positive terminal 13a of the unit cell 13B) and the terminal unit 21. A restraining band 16a is used. For this reason, the length of the wiring 40a can be shortened compared with the length of the wiring in the conventional battery pack. In addition, since the upper restraint band 16a used in advance for the battery unit 10 is used, the cost can be reduced by the amount of the shortened wiring.

  In the present embodiment, the unit cells 13A and 13B are electrically connected to the different upper restraint bands 16a via the bus bars 31 and 32, but the present invention is not limited to this. Specifically, the unit cell 13A farthest from the junction box 20 may be connected only to the upper restraining band 16a via the bus bar 31. In other words, the unit cell 13B closest to the junction box 20 may electrically connect the positive electrode terminal 13a and the terminal portion 21 using wiring as in the conventional case.

  The battery pack 1 can be reduced in size in the Z direction simply by connecting the unit cell 13A farthest from the junction box 20 and the terminal portion 21 using the upper restraint band 16a. That is, when the unit cell 13A and the terminal portion 21 are connected using wiring as in the prior art, all the regions in the X direction of the battery pack 1 are enlarged in the Z direction.

  On the other hand, if the unit cell 13A and the terminal portion 21 are connected using the configuration of the present embodiment, it is not necessary to enlarge the entire region in the X direction of the battery pack 1 in the Z direction. That is, it is only necessary to secure a space (corresponding to the spaces W1 and W2 in FIG. 6) for accommodating the wiring in the portion where the unit cell 13B is located.

  Further, in this embodiment, the unit cell 13A used for taking out the entire output of the battery module 12 is the unit cell 13 located farthest from the junction box 20, but this is not restrictive. Moreover, although the unit cell 13B used for taking out the output of the whole battery module 12 is made into the unit cell 13 in the position nearest to the junction box 20, it is not restricted to this.

  That is, the unit cell 13 (the unit cell 13 </ b> A or the unit cell 13 </ b> B described above) used for taking out the entire output of the battery module 12 may be any unit cell 13 constituting the battery module 12. In other words, in the configuration shown in FIG. 3, the unit cell 13 at an arbitrary position in the X direction can be used as the unit cell 13 used for extracting the entire output of the battery module 12. Even in such a case, the battery pack 1 can be prevented from being enlarged by being electrically connected to the terminal portion 21 using the upper restraining band 16a.

  Next, a battery pack that is Embodiment 2 of the present invention will be described with reference to FIG. Here, FIG. 7 is a top view showing the configuration of the battery unit and the junction box connected to the battery unit in the present embodiment. In addition, about the member which has the same function as the member demonstrated in Example 1, the same code | symbol is used and detailed description is abbreviate | omitted. Hereinafter, differences from the first embodiment will be described.

  In the battery unit 10 in this embodiment, as shown in FIG. 7, a plurality of unit cells 13 are arranged in the X direction, and a row of these unit cells 13 is also arranged in the Y direction. ing. A battery module is constituted by the plurality of single cells 13 arranged in this manner. The battery unit 10 is fixed to the pack case 11 as in the first embodiment.

  In the battery unit 10, two unit cells 13 arranged adjacent to each other in the X direction are electrically connected via a bus bar 40. For example, the positive terminal 13a in the unit cell 13 is electrically connected to the unit cell 13 via the bus bar 40 and the negative terminal 13b in the other unit cell 13 arranged adjacent to the unit cell 13 in the X direction.

  The unit cells 13 adjacent in the Y direction are electrically connected via the bus bar 40. For example, the positive electrode terminal 13 a in the unit cell 13 is electrically connected to the unit cell 13 through the bus bar 40 and the negative electrode terminal 13 b in the other cell 13 arranged adjacent to the Y direction. FIG. 7 shows a part of the connection structure of the unit cells 13 described above.

  With the configuration described above, the plurality of single cells 13 arranged side by side in the X direction and the Y direction are electrically connected in series via the bus bar 40, and the battery unit 10 obtains a desired output. Can do.

  On the other hand, in the battery unit 10 of the present embodiment, the two unit cells 13C and 13D arranged adjacent to each other in the Y direction have a configuration different from the above-described configuration. This configuration will be specifically described below.

  The negative electrode terminal 13b in the unit cell 13C is electrically connected to the upper restraining band 16a via the bus bar 41. Here, the upper restraint band 16a has the same structure as that described in the first embodiment (FIG. 4), and has a structure in which the conductive portion is covered with the insulating portion. The conductive portion in the upper restraint band 16 a is in contact with the bus bar 41. The conductive portion connected to the negative electrode terminal 13b via the bus bar 41 extends to the junction box 20 side, and is connected to the wiring 41a at a portion where the end portion 16a2 is located. Here, in the upper restraint band 16a, the portion connected to the wiring 41a has the conductive portion exposed and is in contact with the wiring 41a.

  On the other hand, the unit cell 13D is arranged adjacent to the unit cell 13C in the Y direction, and the positive terminal 13a of the unit cell 13D is connected to the upper restraining band 16a via the bus bar 42. Here, the upper restraint bands 16a to which the bus bars 41 and 42 are connected are different from each other as shown in FIG.

  The upper restraint band 16a connected to the bus bar 42 also has a structure similar to the structure described in the first embodiment (FIG. 4), and has a structure in which the conductive portion is covered with an insulating portion. The conductive portion of the upper restraining band 16a extends to the junction box 20 side, and is connected to the wiring 41b at a portion where the end portion 16a2 is located. Here, in the upper restraint band 16a, the portion connected to the wiring 41b has the conductive portion exposed and is in contact with the wiring 41b.

  The wirings 41 a and 41 b are connected to a service plug 22 as an external device arranged inside the junction box 20. Here, the service plug 22 is used to cut off the power supply between the single cells 13 </ b> C and 13 </ b> D in the battery unit 10 or allow the power supply. That is, the service plug 22 is a device operated to shut off the high voltage circuit in the battery unit 10 when the battery unit 10 is inspected or maintained. The unit cells 13 connected to the service plug 22 are not limited to the unit cells 13C and 13D arranged at the positions shown in FIG. 7, and can be selected as appropriate.

  Here, in the configuration of the conventional battery pack, the two single cells 13C and 13D in the battery unit 10 are connected to the service plug 22 via wiring. In such a configuration, it is necessary to secure a space (corresponding to the spaces W1 and W2 in FIG. 6) for arranging the wiring in the upper part of the battery unit 10. In this case, the battery pack is enlarged in the Z direction in order to secure the space.

  On the other hand, in the present embodiment, the cells 13C and 13D are connected to the service plug 22 using the upper restraint band 16a used in the battery unit 10, so that a space is omitted in order to arrange the conventional wiring. can do. Thereby, a battery pack can be reduced in size in the Z direction.

  In addition, in the battery unit 10 of a present Example, the structure demonstrated in Example 1 can also be used. That is, the negative electrode terminal and the positive electrode terminal for taking out the output of the battery unit 10 of the present embodiment can be electrically connected to the terminal portion 21 (see FIG. 5) as an external device via the upper restraint band 16a. it can. Specifically, since the battery unit 10 of the present embodiment uses the four upper restraint bands 16a, the two upper restraint bands 16a located at both ends in the Y direction are used for connection to the terminal portion 21. Can do.

  In the above-described embodiment, the case where one conductive portion is provided for one upper restraint band 16a has been described. However, a plurality of conductive portions partitioned by an insulating portion may be provided. In this case, it is possible to electrically connect to a plurality of terminals (the positive terminal 13a and the negative terminal 13b of the unit cell 13) using one upper restraining band 16a.

  Furthermore, the arrangement of the cells 13 in the battery unit 10 is not limited to the arrangement shown in FIG. That is, in the configuration in which the plurality of single cells 13 are arranged in the X direction and the Y direction, the present invention is applied if the plurality of single cells 13 arranged in the X direction are constrained using a restraining band. Can do.

  In the above-described embodiment, the battery pack 1 (battery unit 10) and the junction box 20 are disposed adjacent to each other in the X direction, but the junction box 20 (external device) is disposed away from the battery pack 1. May be. That is, the present invention can be applied as long as the battery unit 10 and the external device are electrically connected to each other on the one end surface side of the battery pack 1. The one end surface referred to here is a surface facing the junction box 20 in the battery pack 1 (pack case 11) in the configuration shown in FIG. In this case, the plurality of single cells 13 constituting the battery unit 10 are arranged in a direction substantially orthogonal to the one end face.

In Example 1 of this invention, it is the schematic which shows a battery pack and a junction box. 3 is an exploded perspective view showing a configuration of a battery unit in Example 1. FIG. 3 is a top view showing the configuration of a battery unit in Example 1. FIG. It is sectional drawing which shows the connection structure of the negative electrode terminal of a cell, and an upper restraint band. It is a side view which shows the connection structure of a battery unit and an external apparatus. It is sectional drawing of a battery unit. In Example 2 of this invention, it is a top view which shows the structure of a battery pack and a junction box.

Explanation of symbols

1: Battery pack (power supply)
10: Battery unit 13: Cell 13a: Positive terminal 13b: Negative terminal 16a: Upper restraint band (restraint member)
16b: Lower restraint band (restraint member)
20: Junction box 21: Terminal part (external device)
31, 32: Bus bars 40a, 40b: Wiring

Claims (9)

A power supply device electrically connected to an external device on one end surface side,
A power supply module including a plurality of power supplies arranged in a direction substantially orthogonal to the one end face and electrically connected to each other;
Extending in the arrangement direction of the plurality of power supply bodies, and having a restraining member for restraining the plurality of power supply bodies,
The power supply apparatus, wherein the restraining member includes a conductive portion for electrically connecting a predetermined power supply body in the power supply module and the external device.   2. The power supply device according to claim 1, wherein the predetermined power supply body is a power supply body arranged at a position farthest from the one end surface in the arrangement direction among the plurality of power supply bodies.   The power supply device according to claim 1, wherein the predetermined power supply body is a power supply body used for taking out an output of the power supply module. The restraining member includes a first restraining member and a second restraining member,
The first restraining member is electrically connected to a positive electrode terminal of a first power supply body used for taking out an output of the power supply module;
4. The power supply device according to claim 3, wherein the second restraining member is electrically connected to a negative terminal of a second power supply body used for taking out an output of the power supply module.   5. The device according to claim 1, wherein the restraining member is electrically connected to a connection member electrically connected to the external device in a region facing the one end surface. The power supply described.   The power supply device according to claim 1, wherein the restraining member includes an insulating portion that covers the conductive portion.   The power supply apparatus according to claim 1, wherein the external device is disposed adjacent to the one end surface.   The power supply apparatus according to claim 1, wherein the external device is a device that operates using an output of the power supply module. 8. The device according to claim 1, wherein the external device is a device for switching between energization and non-energization between two power supply bodies electrically connected to each other in the power supply module. Power supply unit described in one.

Images