JP5772478B2 - Power storage device mounting structure - Google Patents

Description

  The present invention relates to a structure for mounting a power storage device on a vehicle.

  In the vehicle described in Patent Document 1, a battery is disposed between two front seats, and the battery is fixed to the vehicle body floor. In order to fix the battery to the vehicle body floor, it is necessary to place the battery at a predetermined battery mounting position.

JP 2009-035094 A Japanese Patent Application Laid-Open No. 11-078715

  The bracket used for positioning the battery protrudes from the battery and has good visibility. However, when the battery is disposed in a space formed between the two front seats, a bracket protruding from the battery toward the front seat cannot be disposed. For this reason, a positioning structure must be provided on the lower surface of the battery. If the positioning structure is provided on the lower surface of the battery, the visibility of the positioning structure is deteriorated.

  The power storage device mounting structure according to the present invention includes a power storage device and a positioning mechanism. The power storage device is disposed between two seats arranged in the left-right direction of the vehicle, and outputs energy used for traveling of the vehicle. The positioning mechanism positions the power storage device with respect to the vehicle body. The positioning mechanism includes a pin provided on one of the power storage device and the vehicle body, and a guide member that is provided on the other of the power storage device and the vehicle body and guides the pin toward a groove into which the pin is inserted.

  According to the present invention, by using the guide member, the pin can be easily inserted into the groove, and the power storage device can be easily positioned with respect to the vehicle body. Since the power storage device is disposed between the two sheets, when the power storage device is mounted, it is difficult to confirm the mounting position of the power storage device with the sheet. In the present invention, the pin can be inserted into the groove by moving the pin to the guide member without directly guiding the pin into the groove.

  The power storage device can be extended in the front-rear direction of the vehicle. Here, as a pin, the 1st pin and 2nd pin which are arrange | positioned away in the front-back direction of a vehicle can be used. As the guide member, a first guide member that guides the first pin and a second guide member that guides the second pin can be used. By using the first pin and the second pin, the power storage device extending in the front-rear direction of the vehicle can be easily positioned.

  The first guide member may be provided with a wall surface that contacts the first pin and prevents movement of the first pin in the left-right direction of the vehicle. Further, the second guide member can be provided with a wall surface that contacts the second pin and prevents movement of the second pin in the front-rear direction of the vehicle. By using the first guide member and the second guide member, the power storage device can be prevented from shifting in the left-right direction and the front-rear direction of the vehicle. In addition, by providing the first guide member and the second guide member with different functions, the first pin and the second pin can be easily fixed to the first guide member and the second guide member.

  A first pin is inserted into the first guide member, and a groove extending in the front-rear direction of the vehicle can be provided. Further, the second guide member can be provided with a groove into which the second pin is inserted and formed along the outer shape of the second pin. By inserting the second pin into the groove of the second guide member, it is possible to prevent the second pin from shifting. By extending the groove of the first guide member in the longitudinal direction of the vehicle, the first pin can be easily inserted into the groove of the first guide member even if a tolerance is generated in the interval between the first pin and the second pin. Can do.

  The second pin can be longer than the first pin. Thereby, it becomes easy to insert the second pin into the groove before the first pin. Here, the second pin can be arranged on the rear side of the vehicle with respect to the first pin. When the power storage device is mounted from the rear side of the vehicle, it is possible to make it easier for the operator to check the second pin by arranging the second pin on the rear side of the vehicle than the first pin. .

It is an external view which shows the structure of a part of vehicle by which a battery pack is mounted. It is the schematic which shows the internal structure of a battery pack. It is a top view of a battery pack. It is a side view of a battery pack. 3 is a top view of a first guide member in Embodiment 1. FIG. It is AA sectional drawing of FIG. 5 is a top view of a second guide member in Embodiment 1. FIG. It is BB sectional drawing of FIG. FIG. 6 is a diagram showing a mounting structure that is a modification of the first embodiment.

  Examples of the present invention will be described below.

  A mounting structure of a battery pack (power storage device) that is Embodiment 1 of the present invention will be described. The battery pack of this embodiment is mounted on a vehicle. Vehicles include hybrid cars and electric cars. The hybrid vehicle includes a fuel cell or an engine in addition to the battery pack as a power source for running the vehicle. An electric vehicle includes only a battery pack as a power source for running the vehicle.

  FIG. 1 is an external view showing a partial structure of a vehicle interior. The passenger compartment is a space where passengers get on. In FIG. 1, an arrow FR indicates a direction in which the vehicle moves forward, and an arrow UP indicates an upward direction of the vehicle. An arrow RH indicates the direction on the right side when facing the forward direction of the vehicle. The arrow LH indicates the left direction when facing the forward direction of the vehicle. The relationship between the arrows FR, UP, RH, and LH is the same in other drawings.

  As shown in FIG. 1, a driver's seat 110 and a passenger seat 120 are provided in the vehicle interior, and the driver's seat 110 and the passenger seat 120 are fixed to the floor panel 130 via seat slides. The seat slide is used for sliding the driver's seat 110 and the passenger seat 120 in the longitudinal direction of the vehicle.

  In the space formed between the driver's seat 110 (specifically, the seat cushion) and the floor panel 130, the first intake duct 11 is disposed. The first intake duct 11 is used for taking in air in the passenger compartment. A blower is disposed below the first intake duct 11, and air in the vehicle compartment is taken into the first intake duct 11 by driving the blower.

  The air taken in from the first intake duct 11 is guided to the second intake duct 12. The second intake duct 12 is disposed in a space formed between the driver's seat 110 and the floor panel 130, and a part of the second intake duct 12 extends in the left-right direction of the vehicle. One end of the second intake duct 12 is connected to the blower, and the other end of the second intake duct 12 is connected to the third intake duct 13. The air that has entered the second intake duct 12 is guided to the third intake duct 13.

  A battery pack 100 is disposed between the driver seat 110 and the passenger seat 120. A part of the second intake duct 12 is disposed along the bottom surface of the battery pack 100 and extends in the front-rear direction of the vehicle. A part of the second air intake duct 12 arranged along the bottom surface of the battery pack 100 is connected to the third air intake duct 13.

  Battery pack 100 outputs energy for running the vehicle. Specifically, the electrical energy output from the battery pack 100 is converted into kinetic energy for running the vehicle by a motor / generator. The motor / generator is connected to wheels, and the kinetic energy generated by the motor / generator is transmitted to the wheels.

  When the vehicle is decelerated or stopped, the motor generator converts kinetic energy generated during braking of the vehicle into electrical energy. The battery pack 100 can store electrical energy generated by a motor / generator. A DC / DC converter or an inverter can be arranged in the current path connecting the battery pack 100 and the motor / generator.

  If the DC / DC converter is used, the output voltage of the battery pack 100 can be boosted and supplied to the motor / generator, or the output voltage from the motor / generator can be stepped down and supplied to the battery pack 100. If an inverter is used, an AC motor can be used as the motor / generator.

  In the present embodiment, the battery pack 100 is disposed in a space formed between the driver's seat 110 and the passenger seat 120, but the present invention is not limited to this. Specifically, in a configuration in which two seats are arranged side by side in the left-right direction of the vehicle, battery pack 100 can be arranged in a space formed between these seats.

  As shown in FIG. 2, the battery pack 100 includes a case 200 that forms the exterior of the battery pack 100.

  The case 200 houses a lower battery stack 210 and an upper battery stack 220, and the battery stacks 210 and 220 are arranged in the vertical direction of the vehicle. A pedestal (not shown) that supports the upper battery stack 220 is disposed between the lower battery stack 210 and the upper battery stack 220.

  Lower battery stack 210 has a plurality of single cells 211 arranged in the front-rear direction of the vehicle. The plurality of single cells 211 are electrically connected in series by a bus bar (not shown). A space is formed between two unit cells 211 that are adjacent to each other in the front-rear direction of the vehicle, and this space is a space in which air (air in the vehicle interior) used to adjust the temperature of the unit cell 211 moves. .

  The upper battery stack 220 includes a plurality of single cells 221 arranged in the front-rear direction of the vehicle. The plurality of single cells 221 are electrically connected in series by a bus bar (not shown). A space is formed between two unit cells 221 adjacent to each other in the front-rear direction of the vehicle, and this space is a space in which air (air in the vehicle interior) used to adjust the temperature of the unit cell 221 moves. .

  The lower battery stack 210 and the upper battery stack 220 are electrically connected in series via an electric cable. In the present embodiment, the lower battery stack 210 and the upper battery stack 220 are electrically connected in series. However, the lower battery stack 210 and the upper battery stack 220 may be electrically connected in parallel.

  In the present embodiment, the lower battery stack 210 and the upper battery stack 220 have the same structure. That is, the number of the single cells 211 constituting the lower battery stack 210 is equal to the number of the single cells 221 constituting the upper battery stack 220. The number of the single cells 211 and 221 constituting the battery stacks 210 and 220 can be appropriately set based on the required output of the battery pack 100 and the like.

  In addition, the number of the single cells 211 and 221 constituting the battery stacks 210 and 220 can be different from each other. In the present embodiment, the two battery stacks 210 and 220 are arranged in the vertical direction of the vehicle, but three or more battery stacks can be arranged in the vertical direction of the vehicle. Further, only one battery stack may be arranged.

  As the single cells 211 and 221, a secondary battery such as a nickel metal hydride battery or a lithium ion battery can be used. An electric double layer capacitor (capacitor) can be used instead of the secondary battery. In this embodiment, the plurality of single cells 211 (221) are arranged in one direction, but the present invention is not limited to this. Specifically, one battery module can be configured using a plurality of single cells 211 (221), and the plurality of battery modules can be arranged in one direction.

  As shown in FIG. 1, the case 200 houses a first intake chamber 31 and a second intake chamber 32. The first intake chamber 31 and the second intake chamber 32 extend in the front-rear direction of the vehicle and are fixed to the case 200. The first intake chamber 31 and the second intake chamber 32 are arranged in the vertical direction of the vehicle.

  The first intake chamber 31 and the second intake chamber 32 are connected to the third intake duct 13, and air from the third intake duct 13 is guided to the first intake chamber 31 and the second intake chamber 32. The third intake duct 13 extends in the vertical direction of the vehicle and is accommodated in the case 200.

  The air that has moved through the first intake chamber 31 is guided to the lower battery stack 210. The air from the first intake chamber 31 exchanges heat with the unit cells 211 while moving in a space formed between two unit cells 211 adjacent in the front-rear direction of the vehicle.

  The air that has moved through the second intake chamber 32 is guided to the upper battery stack 220. The air from the second intake chamber 32 exchanges heat with the unit cells 221 while moving in a space formed between two unit cells 221 adjacent in the longitudinal direction of the vehicle. By causing heat exchange between the air and the single cells 211 and 221, the temperature of the single cells 211 and 221 can be adjusted.

  In the lower battery stack 210, the air that has passed between two unit cells 211 adjacent in the front-rear direction of the vehicle, in other words, the air after heat exchange moves to the first exhaust chamber 41. In the upper battery stack 220, the air that has passed between two unit cells 221 adjacent in the front-rear direction of the vehicle, in other words, the air after heat exchange moves to the second exhaust chamber 42. The first exhaust chamber 41 and the second exhaust chamber 42 extend in the front-rear direction of the vehicle and are aligned in the vertical direction of the vehicle.

  The first exhaust chamber 41 and the second exhaust chamber 42 are accommodated in the case 200. The first intake chamber 31 and the first exhaust chamber 41 are arranged at positions sandwiching the lower battery stack 210 in the left-right direction of the vehicle. The second intake chamber 32 and the second exhaust chamber 42 are disposed at positions sandwiching the upper battery stack 220 in the left-right direction of the vehicle.

  Air moving through the first exhaust chamber 41 and the second exhaust chamber 42 is guided to the exhaust duct 14. The exhaust duct 14 branches off from the first exhaust chamber 41 and the second exhaust chamber 42 and takes in air from the first exhaust chamber 41 and the second exhaust chamber 42. The exhaust duct 14 is accommodated in the case 200. A part of the exhaust duct 14 extends in the vertical direction of the vehicle, and the exhaust duct 14 is aligned with the third intake duct 13 in the horizontal direction of the vehicle.

  The air guided to the exhaust duct 14 moves toward the floor panel 130 while moving along the exhaust duct 14. The air discharged from the exhaust duct 14 is diffused along the upper surface of the floor panel 130. The upper surface of the floor panel 130 is covered with a carpet, and the air discharged from the exhaust duct 14 diffuses while moving between the floor panel 130 and the carpet.

  FIG. 3 is a top view of the battery pack 100. FIG. 4 is a diagram illustrating a state before the battery pack 100 is mounted on the vehicle. FIG. 4 is a diagram when the battery pack 100 is viewed from the driver's seat 110 side.

  As shown in FIG. 3, four leg portions 201 a to 201 d, a first flange 202, and a second flange 203 are provided on the side surface of the case 200 facing the driver's seat 110. The four leg portions 201a to 201d are fastened to the floor panel 130 with bolts. In the present embodiment, the four leg portions 201a to 201d are provided on the side surface of the case 200 facing the driver's seat 110, but the number of leg portions can be set as appropriate.

  Among the four leg portions 201a to 201d, the leg portion 201a is positioned most forward of the vehicle. A first flange 202 is disposed at a position adjacent to the leg portion 201a in the longitudinal direction of the vehicle. The first flange 202 is located behind the vehicle with respect to the leg portion 201a.

  Of the four leg portions 201a to 201d, the leg portion 201d is positioned most rearward of the vehicle. A second flange 203 is disposed at a position adjacent to the leg portion 201d in the longitudinal direction of the vehicle. The second flange 203 is located in front of the vehicle with respect to the leg portion 201d, and is disposed between the leg portion 201c and the leg portion 201d.

  Pins 204 and 205 are provided on the flanges 202 and 203. The pin 204 extends downward from the first flange 202. The pin 205 extends downward from the second flange 203.

  Four legs 201e to 201h are provided on the side surface of the case 200 facing the front passenger seat 120 side. The four leg portions 201e to 201h are fastened to the floor panel 130 with bolts. In the present embodiment, the battery pack 100 is fixed to the floor panel 130 by using the leg portions 201a to 201h. In the present embodiment, four leg portions 201e to 201h are provided on the side surface of the case 200 facing the front passenger seat 120, but the number of leg portions can be set as appropriate.

  The leg portions 201a and 201e are arranged at positions facing each other with the case 200 interposed therebetween. The leg portions 201b and 201f are arranged at positions facing each other across the case 200. The leg portions 201c and 201g are arranged at positions facing each other with the case 200 interposed therebetween. The leg portions 201d and 201h are arranged at positions facing each other across the case 200.

  The pins 204 and 205 are formed in a cylindrical shape, and the length of the pin 205 is longer than the length of the pin 204 as shown in FIG. The shape of the pins 204 and 205 can be set as appropriate. The shape of the pins 204 and 205 is a shape in a cross section orthogonal to the longitudinal direction of the pins 204 and 205. For example, the pins 204 and 205 can be formed in a rectangular shape. Further, the shapes of the pins 204 and 205 can be made different from each other.

  The pin 204 is inserted into a groove formed in the first guide member 131. As shown in FIG. 4, the first guide member 131 is attached to the first bracket 132, and the first bracket 132 is fixed to the floor panel 130. The first bracket 132 and the floor panel 130 correspond to the vehicle body.

  FIG. 5 is a top view of the first guide member 131 and is a view of the first guide member 131 viewed from the pin 204 side. 6 is a cross-sectional view taken along the line AA in FIG. The first guide member 131 has a groove 131a and a guide surface 131b. The guide surface 131b is an inclined surface facing the battery pack 100 (in other words, above the vehicle), and the lower end of the guide surface 131b is connected to the groove 131a.

  The groove 131a extends in the front-rear direction of the vehicle. The length L of the groove 131 a is larger than the outer diameter of the pin 204. The width W of the groove 131a is substantially equal to the outer diameter of the pin 204. Specifically, the width W of the groove 131a is equal to the outer diameter of the pin 204 within a range that allows the insertion of the pin 204 into the groove 131a. When the pin 204 is inserted into the groove 131a, the wall surface of the groove 131a defining the width W prevents the pin 204 from being displaced in the left-right direction of the vehicle by coming into contact with the pin 204.

  When the pin 204 is inserted into the groove 131a, the pin 204 can be moved along the guide surface 131b by bringing the tip of the pin 204 into contact with the guide surface 131b. Since the guide surface 131b is connected to the groove 131a, the pin 204 can be inserted into the groove 131a by moving the pin 204 along the guide surface 131b. Here, if the tip of the pin 204 is formed of a curved surface, the pin 204 can be easily moved along the guide surface 131b.

  On the other hand, the pin 205 is inserted into a groove formed in the second guide member 133. As shown in FIG. 4, the second guide member 133 is attached to the second bracket 134, and the second bracket 134 is fixed to the floor panel 130. The second bracket 134 and the floor panel 130 correspond to the vehicle body.

  FIG. 7 is a top view of the second guide member 133 and is a view of the second guide member 133 viewed from the pin 205 side. 8 is a cross-sectional view taken along the line BB in FIG. The second guide member 133 has a groove 133a and a guide surface 133b. The groove 133 a is formed in a shape along the outer shape of the pin 205. Specifically, since the pin 205 is formed in a columnar shape, the groove 133a is formed in a circular shape as shown in FIG. The guide surface 133b is an inclined surface facing the battery pack 100 (in other words, above the vehicle), and the lower end of the guide surface 133b is connected to the groove 133a.

  When the pin 205 is inserted into the groove 133a, the pin 205 can be moved along the guide surface 133b by bringing the tip of the pin 205 into contact with the guide surface 133b. Since the guide surface 133b is connected to the groove 133a, the pin 205 can be inserted into the groove 133a by moving the pin 205 along the guide surface 133b. Here, if the tip of the pin 205 is formed of a curved surface, the pin 205 can be easily moved along the guide surface 133b.

  The diameter of the groove 133a is substantially equal to the outer diameter of the pin 205. Specifically, the diameter of the groove 133a is equal to the outer diameter of the pin 205 within a range that allows the insertion of the pin 205 into the groove 133a. When the pin 205 is inserted into the groove 133a, the pin 205 comes into contact with the wall surface of the groove 133a, thereby preventing the pin 205 from being displaced within the plane shown in FIG.

  The battery pack 100 can be positioned with respect to the floor panel 130 by inserting the pins 204 and 205 into the grooves 131a and 133a. That is, the battery pack 100 can be disposed at a predetermined mounting position. By positioning the battery pack 100, the legs 201a to 201h can be fastened to the floor panel 130.

  The battery pack 100 according to the present embodiment is disposed in a limited space between the driver's seat 110 and the passenger seat 120. When placing the battery pack 100 on the floor panel 130, it is necessary to lower the battery pack 100 from the upper side of the vehicle toward the floor panel 130. Here, since the driver's seat 110 and the passenger seat 120 are disposed, it is difficult for an operator to visually check the pins 204 and 205 of the case 200.

  In this embodiment, since the guide surfaces 131b and 133b are formed on the guide members 131 and 133, if the tips of the pins 204 and 205 are brought into contact with the guide surfaces 131b and 133b, the pins 204 and 205 are connected to the guide members 131 and 133, respectively. 133 can be easily inserted into the grooves 131a and 133a. If the pin 204 is moved into the region including the groove 131a and the guide surface 131b, the pin 204 can be inserted into the groove 131a. Compared to the case where the pin 204 is directly inserted into the groove 131a, the pin 204 is inserted. It becomes easy to insert into the groove 131a. Similarly, if the pin 205 is moved into the region including the groove 133a and the guide surface 133b, the pin 205 can be inserted into the groove 133a. Compared to the case where the pin 205 is directly inserted into the groove 133a, It becomes easy to insert the pin 205 into the groove 133a.

  Since the pin 205 is longer than the pin 204, the pin 205 can be easily inserted into the groove 133a of the guide member 133. Specifically, when the operator attaches the battery pack 100 from behind the driver seat 110 and the passenger seat 120, the operator can easily confirm the pin 205 by making the pin 205 longer than the pin 204. Then, the operator can move the pin 205 to the second guide member 133 while checking the pin 205.

  If the pins 205 are inserted into the grooves 133a, the pins 205 can be prevented from being displaced in the plane shown in FIG. 7, so that the battery pack 100 can be easily positioned with respect to the floor panel 130. If the pin 205 is inserted into the groove 133a, the pin 204 can be easily inserted into the groove 131a of the first guide member 131. Since the groove 131a extends in the front-rear direction of the vehicle, the pin 204 can be easily inserted into the groove 131a even if there is a tolerance between the two pins 204 and 205.

  By using the two pins 204 and 205, it is possible to prevent the battery pack 100 from shifting on the upper surface of the floor panel 130. Specifically, the battery pack 100 can be positioned at a position where the pin 205 is inserted into the groove 133a by inserting the pin 205 into the groove 133a. When the pin 205 comes into contact with the wall surface of the groove 133a, the battery pack 100 can be prevented from sliding in the vehicle front-rear direction.

  Further, if the pin 204 is inserted into the groove 131a, the pin 204 can be prevented from being displaced in the left-right direction (LH direction or RH direction) of the vehicle by contacting the wall surface of the groove 131a. it can. Therefore, by inserting the pins 204 and 205 into the grooves 131a and 133a, the battery pack 100 can be prevented from shifting in the front-rear direction and the left-right direction of the vehicle.

  In this embodiment, the pins 204 and 205 are provided on the side surface of the case 200 facing the driver's seat 110, but the present invention is not limited to this. For example, the pins 204 and 205 can be provided on the side surface of the case 200 facing the passenger seat 120 side. Further, one of the pins 204 and 205 can be provided on the side surface of the case 200 facing the driver's seat 110 side, and the other can be provided on the side surface of the case 200 facing the passenger seat 120 side.

  In the present embodiment, the grooves 131a and 133a are provided in the guide members 131 and 133, but the present invention is not limited to this. It is also possible to provide grooves in members (for example, brackets 132 and 134) different from the guide members 131 and 133 and guide the pins 204 and 205 to the grooves using the guide surfaces 131b and 133b of the guide members 131 and 133. .

  In this embodiment, pins 204 and 205 are provided on the case 200, and guide members 131 and 133 are provided on the floor panel 130. However, the present invention is not limited to this. Specifically, as shown in FIG. 9, a guide member 206 can be provided on the case 200 and a pin 135 can be provided on the floor panel 130. The guide member 206 corresponds to the guide members 131 and 133 described in this embodiment, and has a groove 206a and a guide surface 206b. The guide surface 206b is an inclined surface that faces the floor panel 130 (in other words, below the vehicle). The pin 135 corresponds to the pins 204 and 205 described in this embodiment.

  In the configuration shown in FIG. 9, the guide member 206 can be moved along the tip of the pin 135 by bringing the guide member 206 into contact with the tip of the pin 135. Since the guide member 206 has the guide surface 206b, the guide surface 206b moves along the tip of the pin 135, and the pin 135 can be inserted into the groove 206a of the guide member 206.

100: Battery pack (power storage device) 110: Driver's seat 120: Passenger seat 130: Floor panel (vehicle body)
131: First guide member 132: First bracket (vehicle body)
133: Second guide member 134: Second bracket (vehicle body)
131a, 133a: groove 131b, 133b: guide surface 200: case 201a-201h: leg 202: first flange 203: second flange 204: first pin 205: second pin 210: lower battery stack 220: upper battery stack

Claims (1)

A power storage device that outputs energy used for traveling of the vehicle is configured such that the driver seat and the passenger seat are installed in a space between the driver seat and the passenger seat arranged in the left-right direction of the vehicle. A power storage device mounting structure mounted on the vehicle from the rear of the passenger seat,
A positioning mechanism for positioning the energy storage device to a vehicle body,
The positioning mechanism is
A pin provided on one of the power storage device and the vehicle body;
Provided on the other of said power storage device and said vehicle body, have a, a guide member for guiding the pin against the groove in which the pin is inserted,
The power storage device includes a plurality of power storage stacks arranged in the vertical direction of the vehicle, and is formed in a long shape in the front-rear direction of the vehicle,
The pin includes a first pin and a second pin that are spaced apart from each other in the front-rear direction of the vehicle, and the second pin is longer than the first pin and is longer than the first pin. It is arranged on the rear side,
The guide member includes a first guide member that guides the first pin and a second guide member that guides the second pin, and the first guide member is inserted with the first pin, The second guide member has a groove that extends in the front-rear direction of the vehicle and prevents movement of the first pin in the left-right direction of the vehicle, and the second guide member has the second pin inserted therein, It is formed along the outer shape, structure for mounting a power storage device, characterized in that have a groove for preventing movement of the second pin in the longitudinal direction and lateral direction of the vehicle.

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