Battery assembly

Abstract

A battery assembly includes single-battery cells, and thermally-conductive members. The thermally-conductive members are formed of a soft material as a plated configuration. The soft material exhibits thermal conductivity and electric insulatability. The single-battery cells, and the thermally-conductive members are adhered to each other, and are disposed one after another alternately in a row, thereby interposing the thermally-conducive members between the single-cell batteries. The thermally-conductive members include a radiation surface respectively from which heat that the single-battery cells produce radiates. The single-battery cells are cooled indirectly by cooling the radiation surfaces of the thermally-conductive members.

Description

Technical field [0001] The invention relates to a battery assembly, which is suitable for use as a power source for electric vehicles and hybrid vehicles. Background technique [0002] Nickel-hydrogen secondary batteries and lithium-ion batteries can be used as driving power sources for electric vehicles, they need to have a high energy density, and they need to occupy as little vehicle space as possible. Accordingly, it is common practice to construct a battery assembly by assembling a plurality of single cells (single battery cells). For example, the single battery is formed into a rectangular parallelepiped structure, and its battery capacity ranges from several volts to several tens of volts. Dozens of single batteries are connected in series, and then the formed battery sub-assembly is housed in a casing to form Battery components. The formed battery assembly is installed, for example, under the rear passenger seat of the vehicle or in the luggage compartment of the vehicle....

AI Technical Summary

Problems solved by technology

[0006] However, the conventional battery pack proposed in Japanese Unexamined Patent Publication No. 2001-313,018 has a problem in that the unit cells arranged near the middle are not easily dissipated compared with the unit cells arranged near the opposite ends. heat

[0011] However, in the conventional battery pack proposed in Japanese Unexamined Patent Publication No. 2006-48,996, there may be a case where foreign matter such as dust accumulates in the space 104 of the battery sub-assembly

In this case, it is difficult to cool the unit cells 100 uniformly, so that a difference occurs among the cooling characteristics of the unit cells 100 .

In addition, although air from an air conditioner is generally used as a cooling medium, the cooling air may condense in the space 104 due to the temperature difference between the cooling air and the outside air

If the formed dew drops move to the electrodes of the unit cells 100, needless to say, it is difficult for this conventional storage battery assembly to avoid short circuits.

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