JP3702966B2 - Battery storage structure for motorcycles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery storage structure mounted as a power source in a two-wheeled vehicle.
[0002]
[Prior art]
Conventionally, as a battery for a vehicle, a lead-acid battery having a monoblock structure in which six single cells having a voltage of about 2 V are connected in series and integrated is used in many cases, but since this storage battery has a large weight and volume, In particular, when used in a motorcycle, there are cases in which it is difficult to select the arrangement position as described in, for example, JP-A-2-197479.
[0003]
In addition, an assembled battery having a predetermined voltage and capacity by connecting a plurality of cells in series or in parallel may be used as a power source for a motorcycle. As shown in the case of the lead-acid battery, it is arranged in a combination so that it is integrated using a heat-shrinkable tube or the like and is blocked in a certain outer shape. There was a restriction, which sometimes hindered the parts installation design.
[0004]
For example, if a battery with such a large volume is to be mounted on a racing motorcycle (racer), the width of the vehicle body will increase around the engine where the mounting position is advantageous in terms of the center of gravity, making it difficult to expect a slim racer. Therefore, it is generally mounted in a seat cowl having a relatively space. However, since this part has a long distance from the center of gravity of the vehicle body, the inertial mass in the pitching direction around the center of gravity increases. In addition, since the height from the ground is high, the inertial mass in the rolling direction also increases, and as a result, the time constant of the movement of the motorcycle is large, which is inconvenient for a vehicle that requires a quick attitude change like a racer. Become. Alternatively, since heavy objects (batteries) are overhanged and attached, the struts supporting the batteries have to be increased in rigidity. As a result, the weight of the vehicle body increases and acceleration performance is impaired.
[0005]
[Problems to be solved]
The present invention provides a battery storage structure for a two-wheeled vehicle that overcomes the above-described problems in the conventional battery storage structure for motorcycles, has less restrictions on the installation location, and can therefore store the battery in an optimal location. It is.
[0006]
[Means for solving the problems and effects]
The invention according to claim 1 of the present application includes a vehicle body frame member that extends rearward and downward from the head pipe and has a convex curved surface outer peripheral portion, and a mounting member that covers the frame member and is mounted on the frame member. In the two-wheeled vehicle provided, the cylindrical single battery is configured as an assembled battery in which a plurality of adjacent cells are connected adjacent to each other in the longitudinal direction and the circumferential direction of the convex curved surface-shaped outer peripheral portion and connected to each other. The assembled battery is accommodated between the vehicle body frame member and a mounting member mounted on the frame member, and the assembled battery comprising the plurality of cylindrical single cells is shaped like a bottom surface of the mounting member. It is made by being accommodated in the accommodating part formed in the shape along the convex-curved surface-shaped outer peripheral part of the said vehicle body frame member.
[0007]
According to the first aspect of the present invention, as described above, a plurality of cylindrical shapes are adjacent to each other in the storage portion formed in a shape along the convex curved surface outer peripheral portion of the body frame member and the bottom shape of the mounting member. Since the cells are stored, the space required to install the batteries is greatly reduced, and there is no restriction on the placement of other parts mounted on the vehicle or the rider's footrest location. The degree of freedom increases.
In addition, since the plurality of cylindrical cells are connected to each other to form a battery pack, the cylindrical cells can be stored correctly and easily in the storage unit without making a mistake in the connection state of the plurality of cylindrical cells. sell.
[0008]
In addition, since the invention according to claim 2 is configured as described above, it easily rolls to the convex curved surface outer peripheral portion of the vehicle body frame member having low stability when other members are placed. stable plurality of cylindrical battery cells that are not placed on it away, it is possible to mount a robust extremely stable.
Further, according to the first and second aspects of the invention, the assembled battery is housed between the vehicle body frame member and the mounting member mounted on the frame member, so that a plurality of batteries are arranged on the vehicle body. However, it is possible to improve the motion performance of the vehicle body by arranging the battery around the engine near the vehicle body center of gravity . Further, since the load of the cylindrical unit cell is dispersed and supported over a wide area on the convex curved surface outer peripheral surface of the vehicle body frame member, the weight of the vehicle body can be reduced.
In the invention according to claim 3, by arranging the connection member such as the connector on the vehicle rear side of the assembled battery, it becomes easy to arrange the electric parts on the vehicle body frame side connected to the assembled battery at the rear of the battery. Connection is also facilitated.
In the invention according to claim 4, since the output terminal of the assembled battery is provided on one side portion of the assembled battery, the output terminals can be integrated on one side portion, and connection on the vehicle body frame side is facilitated. Also, mass can be consolidated.
[0009]
【Example】
The present invention will be described below with reference to illustrated embodiments.
[0010]
FIG. 1 is a side view of a monocoque frame type motorcycle for racing, where 1 is a front wheel and 2 is a rear wheel. The motorcycle body frame is composed of a thin plate shell 4 that has a front wheel fixed to the head pipe 3 and extends rearward and downward, and a seat stay 5 that extends rearward from the housing 4 and covers the upper portion of the rear wheel 2. ing. A fuel tank 6 is mounted on the upper portion of the shell 4 and a seat 7 is mounted on the upper portion of the seat stay 5.
[0011]
The shell 4 has a streamlined cylindrical shape as a whole (see FIG. 3), has an air introduction port 8 on the front surface, and is opened on the rear surface to form an air discharge port 9. An engine 10 is housed in the housing 4 while being supported by the shell 4, and the rear wheel 2 is driven by the engine 10.
[0012]
As shown in FIG. 2, the upper surface 4a of the housing 4 has a medium-high convex surface, and a fuel tank 6 is mounted on the upper surface 4a. The bottom surface 6a of the fuel tank 6 has a medium-high concave surface that follows the top surface 4a, and a three-dimensional space 11 having a medium-high convex cross section is formed between the top surface 4a and the bottom surface 6a. A plurality of unit cells 12 are arranged in the width direction in the space 11 along the upper surface 4a and the bottom surface 9a. According to the planar shape of the fuel tank 6, these single cells 12 are arranged in a line in the width direction, as shown in FIG. 3, six at the front and four at the rear.
[0013]
Each unit cell 12 is a nickel cadmium battery, has a small diameter cylindrical shape, and the output voltage is 1.2 V per unit. Ten such cells 12 are connected in series to form a battery pack 13.
[0014]
As shown in FIG. 4, the unit cells 12 are housed and arranged in a box 14. The box 14 is provided with a partition 15 between the front row of six unit cells 12 and the rear row of four unit cells 12. The partition 15 secures electrical insulation between the unit cells 12 and also serves as a fixing member for the unit cells 12. The unit cells 12 are connected in series by connection conductors 16, and output conductors 17 are drawn out from the unit cells 12 at both ends of the connection, and are connected to the terminal portion 18. Of course, some unit cells 12 may be connected in parallel to obtain a desired capacity.
[0015]
Each unit cell 12 in the box 14 is fixed to the box 14 by a battery pressing member 19 such as a tape, and has a mechanically integrated structure. Although not shown in FIG. 4, the box 14 has a lid 20 (FIG. 4), and is disposed in the space 11 with the lid 20 attached, and is fixed to the shell 4 or the fuel tank 6. The
[0016]
Thus, the assembled battery 13 housed in the space 11 between the shell 4 as the vehicle body frame member and the fuel tank 6 as the mounting member is located almost directly above the engine 10 and has a distance from the center of gravity of the vehicle body. It becomes very short. Accordingly, the inertia around the center of gravity of the vehicle body is greatly reduced, and the motion performance is greatly improved.
[0017]
Further, since the assembled battery 13 and the shell 4 are in contact with each other with a wide distribution load, it is only necessary to insert a relatively simple cushion material between them, and no particularly high-rigid stays are required to support the battery on the vehicle body. Therefore, the vehicle body becomes light.
[0018]
As mentioned above, although the Example which applied this invention to the monocoque frame type motorcycle was described, of course, it is also possible to apply this invention to the motorcycle which has a normal frame structure.
[0019]
FIG. 5 shows a reference example . According to this illustration, the motorcycle whose front portion is shown in a side view extends obliquely downward from a head pipe 23 that supports the front wheel 21 via a front fork 22. A pair of left and right main frames 24 having a hollow rectangular cross section are provided. A seat rail 25 extends rearward from each main frame 24, and a seat 26 is mounted on the seat rail 25. Further, a down tube 27 extends downward from the lower portion of the head pipe 23, and a rear end thereof is connected to a rear lower end portion of the main frame 24. An engine 28 is mounted in a space surrounded by the main frame 24 and the down tube 27, and an air cleaner 29 is disposed above the engine 28.
[0020]
A fuel tank 30 is mounted on the upper part of the left and right main frames 24, and the fuel tank 30 passes above the air cleaner 29 and reaches the upper part of the seat rail 25. An assembled battery 13 ′ similar to that described above is disposed along the bottom plate 30 a of the fuel tank 30 above the air cleaner 29. FIG. 6 is a cross-sectional view of this part, in which each part of the assembled battery 13 ′ is indicated by the same reference numerals as each part of the assembled battery 13 in the above embodiment. The assembled battery 13 ′ is attached to the stay member 31′31 in the front-rear direction connecting the main frame 24 and the seat rail 25 by attaching both side edges of the box 14 along the bottom plate 30a of the fuel tank 30 across the air cleaner 29. They are arranged accordingly. The assembled battery 13 ′ may be attached to the bottom plate 30a side. Alternatively, the assembled battery 13 can be disposed in a portion where the front fuel tank 30 is directly attached to the main frame 24.
[0021]
The example in which the assembled batteries 13 and 13 'are provided between the fuel tanks 6 and 30 and the vehicle body frame member has been described above. However, the assembled battery according to the present invention can be arbitrarily arranged by individually arranging unit cells. Since it can be formed into a shape, for example, an optional mounting member such as the seats 7 and 26 can be selected and disposed between this and the vehicle body member.
[Brief description of the drawings]
FIG. 1 is a side view of a motorcycle according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view taken along the line II-II in FIG.
FIG. 3 is a perspective view showing a body frame member of the motorcycle and the single cells arranged thereon.
FIG. 4 is a perspective view of the assembled battery without a lid.
FIG. 5 is a front side view of a motorcycle according to a reference example of the present invention.
6 is a cross-sectional view taken along line VI-VI in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Front wheel, 2 ... Rear wheel, 3 ... Head pipe, 4 ... Shell, 5 ... Seat stay, 6 ... Fuel tank, 7 ... Seat, 8 ... Air inlet, 9 ... Air exhaust, 10 ... Engine, 11 ... Space, 12 ... Single cell, 13 ... Battery assembly, 14 ... Box, 15 ... Partition, 16 ... Connection lead, 17 ... Output lead, 18 ... Terminal part, 19 ... Battery holding member, 20 ... Lid, 21 ... Front wheel, DESCRIPTION OF SYMBOLS 22 ... Front fork, 23 ... Head pipe, 24 ... Main frame, 25 ... Seat rail, 26 ... Seat, 27 ... Down tube, 28 ... Engine, 29 ... Air cleaner, 30 ... Fuel tank, 31 ... Stay member

Claims (4)

In a two-wheeled vehicle including a vehicle body frame member that extends rearward and downward from a head pipe and has a convex curved surface outer peripheral portion, and a mounting member that covers the frame member and is mounted on the frame member, A plurality of battery packs adjacent to each other in the longitudinal direction and the circumferential direction of the convex curved surface outer peripheral portion and connected to each other, and the battery pack includes the vehicle body frame member and the frame. The battery pack is housed between a mounting portion mounted on a member, and the storage battery is formed of the plurality of cylindrical unit cells along the bottom shape of the mounting member. A battery storage structure for a two-wheeled vehicle, wherein the battery storage structure is stored in a storage portion formed in a shape along the outer periphery. In a two-wheeled vehicle including a vehicle body frame member that extends rearward and downward from a head pipe and has a convex curved surface outer peripheral portion, and a mounting member that covers the frame member and is mounted on the frame member, A plurality of battery packs adjacent to each other in the longitudinal direction and the circumferential direction of the convex curved surface outer peripheral portion and connected to each other, and the battery pack includes the vehicle body frame member and the frame. housed between the mounting member to be mounted on member, the assembled battery in which the housing is to secure adjacent the battery pack consisting of a plurality of cylindrical battery cells in a convex curved surface outer peripheral portion of said body frame member A battery housing structure for a two-wheeled vehicle characterized by being made by a restraining means. The battery housing structure for a two-wheeled vehicle according to claim 1 or 2, wherein the output terminal of the assembled battery is disposed on the vehicle rear side of the assembled battery.   The battery housing structure for a two-wheeled vehicle according to claim 3, wherein the output terminal of the assembled battery is provided on one side of the assembled battery.

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