Chemistry: electrical current producing apparatus – product – and – With heat exchange feature
Reexamination Certificate
2001-11-07
2003-09-02
Chaney, Carol (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
With heat exchange feature
C429S062000, C429S112000
Reexamination Certificate
active
06613472
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a cooling structure for battery that is loaded in motor type vehicles such as a motor two-wheel vehicle.
BACKGROUND TECHNOLOGY
In recent years, research and development of motor type vehicles irrespective of a two-wheel vehicle or a four-wheel vehicle are actively conducted for coping with an environment issue. Especially as for the four-wheel vehicle advantageous from a space aspect, there is an example that is already being put to practical use.
By the way, in such motor type vehicles, especially a motor two-wheel vehicle out of them, in which it is severely required to make a power supply thereof compact, is loaded with a high-performance battery such as a nickel-hydrogen battery, a nickel-cadmium battery and lithium ion battery. More particularly, first a module is obtained by connecting several cells to each other in series. Next, a predetermined number of these modules are closely accommodated within a hard case. And, finally, these modules are connected to each other in series to bring the above-described battery to completion. However, the battery having such a form has the following tasks:
A battery generates heat in charge and discharge regardless of its kind. This is also applied to the above-described battery constructed of a number of cells. However, even though heat values of the respective cells are equal to each other, a large temperature difference between the cells sometimes occurs. For example, a cell positioned on a side of a center of the case is apt to have heat more than a cell positioned on a side of a wall surface of the case. As a result, a considerable temperature difference occurs between both cells. And, this temperature difference makes charge condition of the cells non-uniform. In other words, the temperature difference between the cells causes performance reduction of the battery.
In addition, in order to suppress unnecessary temperature increase, there is a structure in which open air is blown upon a battery. Certainly, in this case, average temperature of the battery decreases. However, temperature of the open air introduced into the case gradually increases until it is discharged from the case. Accordingly, a cooling ratio by means of the open air never becomes uniform, and the above-described tasks, namely, the task that the performance of the battery is reduced due to the temperature difference between the cells cannot be substantially solved.
DISCLOSURE OF THE INVENTION
The objective of the present invention is to solve the above-described tasks.
Especially, the objective of the present invention is to provide a battery cooling structure capable of cooling a battery so that temperature of the whole thereof becomes uniform.
The above-described objective of the present invention is accomplished by a battery cooling structure for cooling a battery by open air, which is accommodated within a case, characterized in that the structure has:
said case;
first space and second space formed by partitioning space within said case, and adjacent to each other and interposing said battery therebetween;
a first introduction opening formed on a surface of said case, which is corresponding to a side of one end of said battery;
a first discharge opening formed on a surface of said case, which is corresponding to a side of the other end of said battery, for discharging said open air introduced into said first space from said first introduction opening after said open air has passed an inside of said first space;
a second introduction opening formed on a surface of said case, which is corresponding to a side of the other end of said battery; and
a second discharge opening formed on a surface of said case, which is corresponding to a side of one end of said battery, for discharging said open air introduced into said second space from said second introduction opening after said open air has passed an inside of said second space, and
a plurality of said batteries are accommodated in said cases in parallel condition, and
a plurality of unit cooling systems consisting of said first space and said second space adjacent to each other and interposing said batteries therebetween are provided in said cases, and further,
said adjacent unit cooling systems are constructed so as to mutually share said first space or said second space.
In addition, it is preferable that the battery cooling structure of the present invention has
two of said case, and
by making said cases adjacent to each other, and further, connecting said first discharge opening in one of said cases to said second introduction opening in the other of said cases, and
by connecting said first discharge opening in the other of said cases to said second introduction opening in one of said cases,
the structure is constructed so that
the open air introduced from said first introduction opening in one of said cases is discharged from said second discharge opening in the other of said cases, and
the open air introduced from said first introduction opening in the other of said cases is discharged from said second discharge opening in one of said cases. Thereby, high space efficiency can be realized, and at the same time, capacity of the battery can be made larger.
Moreover, the objective of the present invention is accomplished by a battery cooling structure for cooling a battery by open air, which is accommodated within a case, characterized in that space within said case is partitioned into first space and second space adjacent to each other and interposing said battery therebetween, and
the structure is constructed so that
open air introduced into said first space from a first introduction opening formed on a surface of said case, which is corresponding to a side of one end of said battery, is discharged from a first discharge opening formed on a surface of said case, which is corresponding to a side of the other end of said battery, after the open air has passed an inside of said first space, and
open air introduced into said second space from a second introduction opening formed on a surface of said case, which is corresponding to a side of the other end of said battery, is discharged from a second discharge opening formed on a surface of said case, which is corresponding to a side of one end of said battery, after the open air has passed an inside of said second space, and further,
a plurality of said batteries are accommodated in said cases in parallel condition, and
a plurality of unit cooling systems consisting of said first space and said second space adjacent to each other and interposing said batteries therebetween are provided in said cases, and further,
said adjacent unit cooling systems are constructed so as to mutually share said first space or said second space.
In addition, also in the battery cooling structure of the present invention, it is preferable that the structure has
two of said case, and
by making said cases adjacent to each other, and further, connecting said first discharge opening in one of said cases to said second introduction opening in the other of said cases, and
by connecting said first discharge opening in the other of said cases to said second introduction opening in one of said cases,
the structure is constructed so that
the open air introduced from said first introduction opening in one of said cases is discharged from said second discharge opening in the other of said cases, and
the open air introduced from said first introduction opening in the other of said cases is discharged from said second discharge opening in one of said cases. Thereby, high space efficiency can be realized, and at the same time, capacity of the battery can be made larger.
Also, it is preferable that the battery cooling structure of the present invention further has a partition plate, and said partition plate is used together with said battery for a partition of the space within said case, and further said partition plate is constructed so as to support said battery. In this manner, compared with a case where a member for partition use and a member for
Chaney Carol
Tokyo R & D Co., Ltd.
Yuan Dah-Wei D.
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