JP5459348B2 - Power storage unit - Google Patents

Description

  The present invention relates to a power storage device unit, and more particularly to an improvement in the structure of a power storage device unit.

  In recent years, as a representative example of a moving body, an electric vehicle using an electric motor as a driving source and a so-called hybrid car having a plurality of types of driving sources such as an electric motor and a gasoline engine have been put into practical use. In the above-described electric vehicle or the like, a power storage device unit such as a battery or a capacitor is mounted as power storage for supplying electricity as energy to the electric motor. For example, a secondary battery such as a nickel-cadmium battery (Ni-Cd battery), a nickel-hydrogen battery, or a lithium ion battery that can be repeatedly charged and discharged is used as the battery.

  Here, when a secondary battery is used as a power storage, a power storage device unit in which a power storage module in which a plurality of power storage cells are stacked is housed in a power storage case is mounted on an automobile. The power storage device unit means a unit including a power storage case, a power storage module housed in the power storage case, and other internal components.

  FIG. 7 is a schematic diagram showing a state where the power storage device unit 500 using the secondary battery in the background art is mounted on an automobile. A console box (not shown) is arranged between a driver's seat (seat 600 in FIG. 7) and a passenger seat (not shown) adjacent in the lateral direction (X direction), and the power storage device unit 500 is placed in this console box. Is housed. In the power storage module 510 in the power storage device unit 500, a plurality of power storage cells are stacked in a direction crossing the lateral direction (Y direction: traveling direction of the moving body).

  Further, in the automobile shown in FIG. 7, a plurality of seat rods 620 as skeleton members extending in the lateral direction are arranged in the seat portion 610 of the seat 600. The seat rod 620 includes a rod 622 extending along the lateral direction and end plates 621 disposed on both sides of the rod 622. The seat rod 620 is disposed in order to prevent the seat 600 from being crushed during a collision from the side of the automobile. The same applies to the passenger seat (not shown).

  In addition, the following patent document 1 (Unexamined-Japanese-Patent No. 2004-90693) is mentioned as what discloses the motor vehicle which mounts an electrical storage apparatus unit between a driver's seat and a passenger seat. Further, examples of the structure of the power storage device unit include the following Patent Document 2 (Japanese Patent Laid-Open No. 09-199094) and Patent Document 3 (Japanese Patent Laid-Open No. 06-029041).

  In the automobile having the above-described configuration, the seat 600 is provided with a plurality of seat rods 620 at a predetermined pitch (P12) as described above. Therefore, even in the event of a collision from the side of the automobile. The seat is not crushed, and it is possible to ensure the safety of the passenger. However, at the time of a collision, the seat rod 620 is pushed and moved to the side as it is, so that the seat rod 620 contacts the power storage device unit 500 disposed on the side of the seat 600 and the power storage device unit 500 is There is a risk of damage.

  Note that it is considered that the same problem as described above may occur not only in automobiles but also in moving bodies having the same arrangement configuration of power storage device units.

JP 2004-90693 A Japanese Unexamined Patent Publication No. 09-199094 Japanese Patent Laid-Open No. 06-029041

  The problem to be solved by the present invention is that, in a mobile body including a power storage device unit, the power storage device unit may be damaged due to movement of a skeleton member provided in a seat when the mobile body collides. Therefore, an object of the present invention is to suppress damage to a power storage device unit disposed between adjacent seats in the lateral direction even when a skeletal member provided in the seat moves at the time of collision of a moving body. It is an object of the present invention to provide a power storage device unit having a structure that can be used.

  In the power storage device unit according to the present invention, the power storage device unit is disposed between adjacent seats in the lateral direction of the mobile body, and the power storage module is accommodated in the power storage case, wherein the power storage module is the power storage device. The reinforcing member has a strength higher than that of the component parts of the module, and the reinforcing member is disposed at a predetermined interval in a direction intersecting the lateral direction.

  Further, the seat has a skeleton member extending along the lateral direction and having end plates on both sides, and the reinforcing member is spaced at a narrower distance than the length along the direction intersecting the lateral direction of the end plate. Be placed.

  According to the power storage device unit of the present invention, the power storage module is stronger than the components of the power storage module even when the skeleton member provided in the seat moves in the lateral direction at the time of collision of the moving body. Reinforcing members having a high height are arranged at a predetermined interval in a direction intersecting the lateral direction.

  Thus, even when the power storage case of the power storage device unit is deformed inward due to the contact of the skeleton member, the power storage case is in contact with the reinforcing member, thereby preventing further deformation of the power storage case toward the power storage module. It becomes possible. As a result, damage to the power storage device unit due to the skeleton member, specifically, damage to the power storage module due to the skeleton member can be suppressed.

It is a schematic cross section which shows the internal structure of the electrical storage apparatus unit in embodiment based on this invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1. It is a schematic diagram which shows the case where the electrical storage case of the electrical storage apparatus unit in embodiment based on this invention deform | transformed inside. It is a perspective view which shows an example of the specific structure of the electrical storage module employ | adopted as the electrical storage apparatus unit in embodiment based on this invention. It is a perspective view which shows the external appearance of the reinforcement frame in embodiment based on this invention. It is sectional drawing which shows the electrical storage apparatus unit in other embodiment based on this invention. It is a schematic diagram which shows the state which mounted the electrical storage apparatus unit using the secondary battery in background art in a motor vehicle.

  Hereinafter, an embodiment of a power storage device unit according to the present invention will be described with reference to the drawings. In the above description of the background art and in the embodiments, the same or corresponding parts are denoted by the same reference numerals, and redundant description may not be repeated.

  First, a power storage device unit in the present embodiment will be described with reference to FIGS. 1 to 3. 1 is a schematic cross-sectional view showing the internal structure of power storage device unit 100 in the present embodiment, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. It is a schematic diagram which shows the case where the electrical storage case 120 of the unit 100 deform | transforms inside.

  Referring to FIGS. 1 and 2, power storage device unit 100 according to the present embodiment, as described in the background art, has a driver's seat (FIG. 7) adjacent in the lateral direction (X direction) of a moving vehicle. It is assumed that it is housed in a console box placed between the passenger seat and the passenger seat. The power storage device unit 100 has a power storage module 110 housed in a power storage case 120.

  In this power storage module 110, a plurality of power storage cells 111 are stacked and disposed along a direction intersecting the lateral direction (Y direction: the traveling direction of an automobile as a moving body) as a constituent member. In addition, reinforcing members 130 arranged at a predetermined interval are provided between the storage cells 111. As shown in FIG. 2, the reinforcing member 130 is a member that is larger than the outer shape of the power storage cell 111 and that has a higher strength than the power storage cell 111. Specifically, a reinforced resin containing glass fiber or the like is used.

  Here, FIG. 3 schematically shows a state where an external force F is applied to the power storage device unit 100 from the outside. Examples of the external force F include contact of the skeleton member with the power storage device unit 100 due to movement of the skeleton member provided on the seat at the time of a side collision of the automobile. As shown in FIG. 3, even when an external force F is applied to the power storage device unit 100 from the outside, the power storage case 120 is stored in the power storage cell 111 using the contact portion with the reinforcing member 130 arranged at the pitch P1 as a contact. The external force F can be absorbed by curving to the side.

  Thus, when the electrical storage case 120 contacts the reinforcing member, further deformation of the electrical storage case 120 toward the electrical storage cell 111 can be suppressed. As a result, damage to the power storage device unit 100 due to movement of the skeleton member, specifically, damage to the power storage cell 111 due to the skeleton member can be suppressed.

  Normally, as shown in FIG. 7, the seat rod 620 as a skeleton member is composed of a rod 622 and an end plate 621. Therefore, the arrangement pitch P1 of the reinforcing members 130 is arranged at an interval narrower than the length P11 (see FIG. 7) along the direction (Y direction) intersecting the horizontal direction (X direction) of the plate 621. When the seat rod 620 is moved, the plate 621 can be brought into contact with the reinforcing member 130. As a result, it is possible to suppress deformation of the power storage case 120 toward the power storage cell 111 side. Note that the shape of the end plate 621 is not limited to the illustrated oval shape, and various shapes such as a circle and a polygon can be employed.

  In addition, as described above, when the seat rod 620 as the skeleton member is composed of the rod 622 and the end plate 621, the reinforcing member 130 is formed from the outer shape of the storage cell 111 as shown in FIG. However, even if the outer dimensions of the storage cell 111 are the same as those of the storage cell 111, it is possible to receive a force at the contact portion between the plate 621 and the reinforcing member 130.

(Storage module 210)
Next, as an example of a specific configuration of the power storage module 110, a power storage module 210 having a plurality of power storage packs therein will be described with reference to FIGS. A plurality of power storage frames 211 that hold the power storage packs from both sides are stacked in the Y direction, and the power storage packs are positioned between the power storage frames 211. In appearance, the power storage frame 211 forms a power storage cell. Note that, even if the electricity storage pack itself is a rectangular electricity storage cell sealed with a resin, the overall arrangement approximates the structure shown in FIG.

  The power storage module 210 is provided with a plurality of reinforcing frames 230 as reinforcing members whose appearance shape approximates that of the power storage frame 211 at a predetermined pitch. The power storage frame 211 and the reinforcing frame 230 are maintained in a stacked state by the end plates 240 and the plurality of restraining bands 250 arranged at both ends.

  The appearance of the reinforcing frame 230 is shown as a perspective view in FIG. The reinforcing frame 230 is made of a resin having higher strength than the power storage frame 211, and, for example, a reinforced resin including glass reinforced fibers is used.

  The reinforcing frame 230 is provided with a main body frame 231 and two rectangular recesses 231a for storing the electricity storage packs on each side. Further, in order to dissipate heat from the electricity storage pack, a refrigerant inlet / outlet 232 is provided on the side, and an air passage 234 communicating with the refrigerant inlet / outlet 232 is also provided in the recess 231a located on both sides.

  Further, a concave groove 235 for allowing the restraining band 250 to pass through, a through portion 237 for discharging gas, a wiring guide groove 236 for voltage detection lines such as a thermistor, and the like are formed on the upper surface of the reinforcing frame 230. . Further, a side wall of the reinforcing frame 230 is formed with a lightening region 238 for releasing sink marks and warpage during resin molding and maintaining the molding dimensional accuracy of the reinforcing frame 230.

  In the power storage module 210 having the above-described configuration, the reinforcing frame 230 has a function as the power storage frame 211 and, like the above-described reinforcing member 130, the storage cell of the power storage cell that accompanies the movement of the skeleton member of the seat at the time of a vehicle side collision. It is possible to suppress damage.

  In addition, although the above-described power storage device unit 100 shows a case where the power storage modules 110 are arranged in a single stage, as shown in FIG. In this case, the idea of the present invention can be applied.

  FIG. 6 is a longitudinal sectional view showing a state in which the upper and lower two-stage power storage device units 300 are housed in the console box 400 between the driver's seat and the passenger seat of the automobile. A common reinforcing frame 301 extending in the vertical direction is disposed in the two upper and lower energy storage modules 310U and 310D, and a voltage such as a thermistor is provided in a region sandwiched between the upper energy storage module 310U and the lower energy storage module 310D. A recessed area 301a for wiring a detection line or the like is provided. The power storage modules 310U and 310D may have either a form in which the power storage pack is sandwiched from both sides or a form in which the power storage pack itself is sealed with resin.

  As described above, even when the configuration in which the two-stage power storage modules 310U and 310D are arranged in the upper and lower directions is adopted, as with the above-described reinforcing members, the skeleton member of the seat is moved at the time of a side collision of the automobile. It is possible to suppress damage to the storage cell.

  In the above embodiment, the form of the electricity storage pack is not limited to a rectangular shape, and the idea of the present invention can be applied to a can type or a cylindrical type. Moreover, even if not only a secondary battery and a capacitor but also a fuel cell is used as the power storage, the same configuration can be adopted.

  Therefore, the above-described embodiment disclosed herein is illustrative in all respects and is not restrictive. The technical scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 100 Power storage unit, 120 Power storage case, 110 Power storage module, 111 Power storage cell, 130 Reinforcement member, 210 Power storage module, 211 Power storage frame, 230 Reinforcement frame, 231 Body frame, 231a Recess, 232 Refrigerant inlet / outlet, 234 Ventilation path, 235 Recess Groove, 236 wiring guide groove, 237 penetrating portion, 238 thinning region, 240 end plate, 250 restraining band, 300 power storage device unit, 301 reinforcing frame, 301a recessed region, 310U, 310D power storage module, 400 console box, 500 power storage device Unit, 510 power storage module, 600 seat, 610 seat, 620 seat rod, 621 plate, 622 rod.

Claims (2)

A power storage device unit that is disposed between adjacent seats in the lateral direction of the mobile body, and the power storage module is housed in a power storage case,
The power storage module has a reinforcing member having higher strength than the components of the power storage module,
The reinforcing members are arranged at a predetermined interval in a direction intersecting the lateral direction,
The seat has a skeleton member extending along a lateral direction and provided with end plates on both sides,
The power storage device unit, wherein the reinforcing members are arranged at an interval narrower than a length along a direction intersecting a lateral direction of the end plate.   The power storage device unit according to claim 1, wherein the reinforcing member is a resin including a glass reinforcing fiber.

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