JP2002134083A - Collective battery pack - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent inconveniences such as short-circuit due to external contact and efficiently arrange electric equipment necessary for use and management of a battery pack. SOLUTION: Two stacked batteries 24 are housed in a case 22 at predetermined intervals so that bus bars 28 face each other, and devices necessary for management and use of the assembled battery are stored in an internal space formed by the two stacked batteries 24. Deploy. Thus, it is possible to prevent the external member from coming into contact with the bus bar 28 to prevent inconveniences such as short circuit, and to effectively use the space and to use the device and the cell 26.
And simplification of the wiring for connecting to the bus bar 28 can be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembled battery pack, and more particularly to an assembled battery pack having an assembled battery formed by connecting a plurality of cells.

[0002]

2. Description of the Related Art Conventionally, as this type of battery pack, a battery pack is constituted by arranging a plurality of stacked batteries, each of which is composed of a plurality of unit cells connected in series and stacked, so that electrodes face upward. Proposed. In such an assembled battery pack, by arranging the electrodes upward, connection of the electrodes between the stacked batteries is facilitated.

[0003]

However, in such an assembled battery pack, since all the electrodes are arranged so as to face upward, the frequency of contact by members from outside increases, and the battery pack is formed of a conductive material. When the members contact each other, there is a possibility that the electrodes and the connection members may be damaged.

An object of the battery pack of the present invention is to reduce the frequency of external contact. Also,
An object of the battery pack of the present invention is to provide an efficient arrangement of electric devices required for use and management of the battery pack.

[0005]

Means for Solving the Problems and Their Functions and Effects The battery pack of the present invention employs the following means to achieve at least a part of the above object.

The battery pack of the present invention is a battery pack having a battery pack formed by connecting a plurality of cells, wherein the battery pack is arranged such that electrodes of the plurality of cells face inward. The gist is that

In the battery pack of the present invention, since the electrodes of the plurality of cells are arranged to face inward, the frequency of external contact can be reduced. Therefore, it is possible to prevent the electrodes and the connection members from being damaged by external contact of the members formed of the conductive material. Note that the unit cell includes a dischargeable secondary battery.

In the battery pack of the present invention, the battery pack has two stacked batteries stacked so that the electrodes are arranged in one direction, and the two stacked batteries are arranged so that the electrodes face each other. It can also be made. In this case, the assembled battery can be arranged as two stacked batteries.

Further, in the battery pack of the present invention,
The unit cell may be formed in a square shape.

Further, in the battery pack of the present invention, the battery pack may be formed by connecting the plurality of cells in series.

Alternatively, in the battery pack of the present invention, at least a part of electrical equipment necessary for use or management of the battery pack is arranged near electrodes of the battery pack arranged to face inward. It can also be.
In this case, the inner space formed by the battery pack can be effectively used, and the wiring for connecting the electrical devices and the electrodes can be simplified. In particular, the unit cell is a chargeable / dischargeable secondary battery, and it is preferable to arrange electric equipment necessary for controlling the secondary battery between the assembled batteries.

[0012]

Next, embodiments of the present invention will be described with reference to examples. FIG. 1 is a configuration diagram schematically showing the configuration of an assembled battery pack 20 according to one embodiment of the present invention, and FIG. 2 is a perspective view illustrating the appearance of a stacked battery 24 constituting the assembled battery pack 20. Battery pack 20 of the embodiment
As shown in the figure, a case 22, two stacked batteries 24 in which a plurality of unit cells 26 are stacked, and an electronic control unit 30 and a system as devices necessary for managing and using an assembled battery including the two stacked batteries 24. And a main relay 34.

As shown in FIG. 2, the laminated battery 24 is formed by laminating a plurality of rectangular cells 26 and connecting the electrodes of each cell 26 in series by a bus bar 28. As shown in FIG. 1, the two stacked batteries 24 are housed in the case 22 at predetermined intervals so that the electrodes of each unit cell 26, that is, the bus bars 28 face each other. The two stacked batteries 24 housed facing each other are connected to each bus bar 2.
8 are connected in series by a wire harness 29 to form an assembled battery. As described above, by storing the two stacked batteries 24 in the case 22 at predetermined intervals so that the bus bars 28 face each other, it is possible to prevent external members from contacting each other and suppress inconvenience such as a short circuit.

In the space between the two stacked batteries 24, an electronic control unit 30 for managing the assembled batteries is arranged, and the status of each cell 26 is controlled by a state signal input to the electronic control unit 30 via a signal line 32. Manages state. Further, a bus bar 28 is provided in a space between the two stacked batteries 24.
And a system main relay 34 connected to the battery harness 36 via a wire harness 36 and in charge of using the assembled battery.
Thus, by arranging the devices necessary for managing and using the assembled battery in the internal space formed by the two stacked batteries 24, the internal space can be effectively used, and the devices and the cells 26 can be used. And simplification of wiring for connecting to the bus bar 28 can be achieved.

The battery pack 20 of the embodiment described above
According to this, by storing the two stacked batteries 24 in the case 22 at a predetermined interval so that the bus bars 28 face each other, it is possible to prevent external members from contacting each other and suppress inconvenience such as short circuit. In addition, according to the battery pack 20 of the embodiment, the devices necessary for managing and using the battery pack are arranged in the internal space formed by the two stacked batteries 24, so that the space can be effectively used and the devices can be used. Simplification of wiring for connecting the battery and the cell 26 and the bus bar 28 can be achieved.

In the assembled battery pack 20 of the embodiment, the unit cells 26 have a rectangular shape, but may have a non-rectangular shape. In the assembled battery pack 20 of the embodiment, the unit cells 26 are connected in series to form the stacked battery 24, and two stacked cells 24 are connected in series to form the assembled battery. Thus, the stacked battery 24 may be configured, or two stacked batteries 24 may be connected in parallel.

In the battery pack 20 of the embodiment, the electronic control unit 3 is used as equipment necessary for managing and using the battery pack.
0 and the system main relay 34
However, other devices may be arranged in the internal space formed by the two stacked batteries 24. Further, in the assembled battery pack 20 of the embodiment, the devices necessary for the management and use of the assembled battery are arranged in the internal space formed by the two stacked batteries 24, but are formed by the two stacked batteries 24. It may be arranged in a part other than the internal space.

The embodiments of the present invention have been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various embodiments may be made without departing from the gist of the present invention. Of course, it can be carried out.

[Brief description of the drawings]

FIG. 1 shows an assembled battery pack 20 according to an embodiment of the present invention.
FIG. 2 is a configuration diagram showing an outline of the configuration of FIG.

FIG. 2 shows a stacked battery 24 constituting the assembled battery pack 20;
FIG. 3 is a perspective view illustrating an example of the appearance of FIG.

[Explanation of symbols]

Reference Signs List 20 battery pack, 22 case, 24 stacked batteries, 26 cells, 28 bus bar, 29 wire harness, 30 electronic control unit, 32 signal lines, 3
4 System main relay, 36 wire harness.

Claims (5)

[Claims] 1. An assembled battery pack having an assembled battery formed by connecting a plurality of unit cells, wherein the assembled battery is arranged such that electrodes of the plurality of unit cells face inward. 2. The battery according to claim 1, wherein the battery has two stacked batteries stacked so that the electrodes are arranged in one direction, and the two stacked batteries are arranged so that the electrodes face each other. Collective battery pack. 3. The battery pack according to claim 1, wherein the single cells are formed in a rectangular shape. 4. The assembled battery pack according to claim 1, wherein the assembled battery is formed by connecting the plurality of cells in series. 5. The battery according to claim 1, wherein at least a part of electrical equipment necessary for use or management of the battery pack is disposed near an electrode of the battery pack arranged to face inward. Collective battery pack.