JPH11120974A - Battery box device of hybrid electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the penetration of a foreign matter into a battery box to ensure the safety, and provide satisfactory ventilating property within the battery box by forming a box for housing a number of batteries by a base part for placing the batteries and a cover part, and forming a number of holes in the cover part. SOLUTION: A battery box 4 is formed of a base part 21 and a cover part 22, and a number of batteries 20 are arranged on the base part 21 through a support 25 and a retainer 26, and fixed thereto. The cover part 22 is formed of a frame 28 formed into a box frame and a cover plate 29 mounted on each surface by a bolt 32. A number of holes 30 are provided on the cover plate 29 to enhance the ventilating property within the battery box 4, and formed into a size such that a small foreign matter or the finger of a man does not pass. Thus, it can be avoided that the battery box 4 is filled with a heat to raise the internal temperature, and the risk of the terminal part of the battery 20 being short-circuited can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a battery box device for a hybrid electric vehicle.

[0002]

2. Description of the Related Art Conventionally, there is a hybrid electric vehicle in which an engine and an electric motor are combined to improve exhaust emission.

[0003] Such a hybrid electric vehicle includes a generator driven by an engine, and a battery for storing the generated power, and travels by using these as a power source to drive an electric motor.

[0004]

In such a hybrid electric vehicle, in order to mount a large number of batteries, for example, a large number of batteries are mounted on a pallet and installed in a battery compartment.

However, in this case, it is necessary to form a box by providing a cover on the pallet so that the terminal portion of the battery does not short-circuit. The battery performance may be degraded due to an increase in temperature. Further, if a wire mesh or the like is used for the cover in order to improve the air permeability, there is a concern that foreign matter may enter the cover.

Incidentally, Japanese Utility Model Laid-Open No. Hei 6-27392,
Japanese Patent Application Publication No. 77648 discloses a structure for storing a battery or the like.

An object of the present invention is to solve such a problem.

[0008]

According to a first aspect of the present invention, there is provided a hybrid electric vehicle in which a number of batteries are housed in a battery box and installed in a battery compartment. And a large number of small holes are formed in the cover portion.

According to a second aspect of the present invention, in a hybrid electric vehicle in which a large number of batteries are housed in a battery box and installed in a battery compartment, the battery box is formed by a base on which the battery is mounted and a cover. Each surface of the cover is formed by a plate member having a number of small holes.

[0010]

According to the first and second aspects of the present invention, it is possible to obtain good air permeability in the battery box while securing high security against foreign substances and the like entering the battery box. Therefore, it is possible to prevent the temperature inside the battery box from rising due to accumulation of heat in the battery box, and it is possible to maintain stable and high performance of the battery.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a power room 1 provided at the rear of a vehicle such as a bus. Reference numeral 2 denotes an engine, 3 denotes a generator driven by the engine 2, and 4 denotes a battery for storing electric power generated by the generator 3. Reference numeral 20 denotes pallets, and reference numerals 5 and 6 denote traveling motors driven by the generator 3 and the battery 20 via the inverter 7.

Partition walls are formed at the front part (vehicle side), the upper part, etc. of the power room 1, the left and right sides are provided on the outer wall panel 8 of the vehicle, and the rear part (rear side of the vehicle) is provided with a door for inspection and the like. Surrounded by the rear panel of the vehicle.

The engine 2 is disposed horizontally on the left side of the power room 1 (left side of the vehicle), and the generator 3 is directly connected to the engine 2. 9 is an air cleaner. The electric motors 5 and 6 are attached to the transmission 10 on the right side of the power room 1 (right side of the vehicle), and the driving force is transmitted from the drive shaft and the differential device to the driving wheels via the transmission 10.

The inverter 7 is disposed in the inverter room 11 in the middle part of the power room 1 on the right side of the drawing (right side of the vehicle). .

Generator 3, motors 5, 6 and inverter room 1
Auxiliary equipment such as an air compressor 13, an air conditioner unit 14, and a radiator unit are arranged between the control unit 1 and the control unit 1.

A heat shield plate 15 is provided between the engine 2 and the generator 3 so that hot air around the engine 2 does not flow into the vicinity of the generator 3. The heat shield plate 15 extends from the front part to the rear part of the power room 1 in the engine room 16 and the generator room 1.
7, and extends to the upper part of the power chamber 1 with respect to the engine room 16 so as to also define the inverter room 11 and the battery room 12.

As shown in FIG. 2 to FIG.
Is composed of a base 21 and a cover 22, and a large number of batteries 20 are arranged on the base 21 via a support 25 and a retainer 26 and fixed.

On the lower surface of the pedestal 21, three frame brackets 23 are provided at the center, left and right, and between these frame brackets 23, a pawl guide 41 of a forklift is provided. 27 is a terminal box.

On the floor of the battery compartment 12, there are provided three groove-shaped guide rails 24 for receiving the frame bracket 23 of the base 21 and guiding the frame bracket 23 when the battery box 4 is loaded and unloaded. A lock mechanism for fixing the battery box 4 to the battery compartment 12 is provided between the frame bracket 23 and the guide rail 24.

The cover portion 22 is formed by a frame 28 formed in a box frame shape, and a cover plate 29 attached to each surface (excluding the lower surface) of the frame 28 by a bolt 32 or the like.

The cover plate 29 has a large number of small holes 30.
Is provided. The small holes 30 are provided in large numbers in order to improve the air permeability in the battery box 4 and are formed in a size that does not allow small foreign substances, human fingers, and the like to enter.

In this case, a punching plate formed by punching a large number of small holes 30 in advance may be used for the cover plate 29.

The cover 22 is detachably mounted on the upper surface of the base 21 via a fixing tool.

As described above, since a large number of small holes 30 are formed in the cover portion 22 of the battery box 4, good air permeability is obtained, and heat in the battery box 4 escapes from the small holes 30 to the outside. In addition, it is possible to prevent the heat inside the battery box 4 from increasing and the internal temperature from increasing. As a result, the battery 20 is maintained at an appropriate temperature, and stable and high performance of the battery 20 is ensured.

The small hole 30 is formed in a size that does not allow a small foreign substance or a human finger or the like to enter therein.
There is no fear that foreign matter enters the inside and the terminal portion of the battery 20 is short-circuited, and high safety can be obtained.

Further, since the cover plate 29 having the small holes 30 is used, the rigidity of the battery box 4 can be increased as compared with a case where a wire net or a louver is used.

[Brief description of the drawings]

FIG. 1 is an arrangement configuration diagram showing an embodiment.

FIG. 2 is a front view in which a part of a cover portion of the battery box is cut away.

FIG. 3 is a plan view in which a cover part of the battery box is partially cut away.

FIG. 4 is a side view of the battery box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power room 2 Engine 3 Generator 4 Battery box 5, 6 Electric motor 7 Inverter 11 Inverter room 12 Battery room 20 Battery 21 Stand part 22 Cover part 23 Frame bracket 24 Guide rail 25 Support 28 Frame 29 Cover plate 30 Small hole 41 guide

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuji Kusara Nissan Diesel Kogyo Co., Ltd. (72) Inventor Toshihiko Abe Nissan Diesel Kogyo Inside the corporation

Claims (2)

[Claims] 1. A hybrid electric vehicle in which a large number of batteries are housed in a battery box and installed in a battery compartment, wherein the battery box is formed by a base on which the battery is mounted and a cover, and A battery box device for a hybrid electric vehicle, wherein the small hole is formed. 2. A hybrid electric vehicle in which a large number of batteries are housed in a battery box and installed in a battery compartment, wherein the battery box is formed of a base on which the battery is mounted and a cover. A battery box device for a hybrid electric vehicle, wherein a surface is formed by a plate member having a number of small holes.