JPH0673864U - Single cell assembly with cooling mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a single cell assembly with a cooling mechanism, which has a good heat distribution as a whole. [Structure] A plurality of unit cells 2 are housed in a heat insulating container 1, a cooling plate 3 is arranged between the lower part of the housed unit cells 2 and the heat insulating container 1, and a cooling pipe 4 connected to the cooling plate 3 is used to externally In the unit cell assembly with a cooling mechanism having a structure connected to the heat exchanger 5, the cooling pipe 4 connected to the cooling plate 3 is taken out from the lower portion of the heat insulating container 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a unit cell assembly with a cooling mechanism having an internal cooling mechanism.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, various configurations of single cell assemblies having a structure in which a plurality of single cells such as sodium-sulfur batteries are housed in a heat insulating container are known, and among them, a cooling mechanism is provided in the heat insulating container. A unit cell assembly with a cooling mechanism is used, for example, as a battery for an electric vehicle.

FIG. 3 is a diagram showing a configuration of an example of a conventional unit cell assembly with a cooling mechanism. In the example shown in FIG. 3, 21 is a heat-insulating container, 22 is a single cell such as a sodium-sulfur battery stored in the heat-insulating container 21, and 23 is a space between the lower part of the plurality of single cells 22 and the heat-insulating container 21. A cooling plate is provided, 24 is a cooling pipe for circulating and supplying a medium such as oil for cooling to the cooling plate 23, and 25 is for cooling a cooling medium that is circulated and supplied through the cooling pipe 24. Is a joint for connecting the cooling pipe 24 and the heat exchanger 25.

[0004]

[Problems to be solved by the device]

 In the conventional unit cell assembly with a cooling mechanism having the above-described structure, a cooling pipe 24 is provided between the lower portion of the unit cell assembly 22 and the heat insulating container 21 as shown in FIG. Although the cooling plate 23 is drawn up to the outside from the provided cooling plate 23, the unit cell 22 facing the cooling pipe 24 is partially cooled, which causes a problem that the heat distribution of the entire unit cell assembly is deteriorated.

An object of the present invention is to solve the above-mentioned problems and to provide a single cell assembly with a cooling mechanism having a good heat distribution as a whole.

[0006]

[Means for Solving the Problems]

 The unit cell assembly with a cooling mechanism of the present invention stores a plurality of unit cells in a heat insulating container, and arranges a cooling plate between the lower portion of the stored unit cells and the heat insulating container, and a cooling pipe connected to the cooling plate. Thus, in the unit cell assembly with a cooling mechanism that is connected to the external heat exchanger, the cooling pipe connected to the cooling plate is configured to be taken out from the lower part of the heat insulating container.

[0007]

[Action]

 In the above-mentioned configuration, the cooling pipe that connects the cooling plate provided between the lower part of the unit cell assembly and the heat insulating container and the external heat exchanger is taken out from the lower part of the heat insulating container to the outside. There is no place where the cooling pipe and the unit cell come close to each other except the part that contacts the cooling plate, the unit cell is not partially cooled, and the heat distribution of the whole unit cell assembly can be improved. it can.

[0008]

【Example】

 FIG. 1 is a diagram showing a configuration of an example of a unit cell assembly with a cooling mechanism of the present invention. In the example shown in FIG. 1, 1 is a heat insulating container, 2 is a single cell such as a sodium-sulfur battery stored in the heat insulating container 1, and 3 is provided between the lower part of the plurality of single cells 2 and the heat insulating container 1. Cooling plate 4 is a cooling pipe for circulating and supplying a medium such as cooling oil to cooling plate 3 and 5 is a heat exchanger for cooling the cooling medium circulating through cooling pipe 4. , 6 are joints for connecting the cooling pipe 4 and the heat exchanger 5, and these members are the same as in the conventional case.

What is important in this embodiment is that the cooling pipe 4 is taken out from the lower part of the side surface of the heat insulating container 1 and connected to the heat exchanger 5. With this structure, the number of cells 2 that can be stored is slightly smaller than that of the conventional example having the structure shown in FIG. 3, but the portion where the cooling pipe 4 and the cells 2 contact each other is further increased. Since it is completely eliminated, the heat distribution becomes good as a whole, which is preferable as a unit cell assembly.

FIG. 2 is a view showing the configuration of another example of the cooling pipe takeout portion of the unit cell assembly with a cooling mechanism of the present invention. In the example shown in FIG. 2, a joint portion 7 is also provided in the cooling pipe 4 in the heat insulating container 1, and a bellows-shaped stainless steel pipe 8 is welded in the heat insulating container 1 in advance to the heat insulating container 1. Since it is formed by connecting the pipe 8 and the cooling pipe 4 at the joint portion 7 and the pipe 8 and the heat exchanger 5 at the joint portion 6 at the time of assembly, The cooling pipe 4 is being taken out.

In this embodiment, since there are two joints, the assembling workability of the unit cell assembly is improved, and since the portion of the pipe 8 inside the heat insulating container 1 has a bellows structure, heat conduction is reduced. be able to. It is needless to say that in any of the above-described embodiments, the heat exchanger 5 can be either an air-cooled type or a water-cooled type, which is conventionally known, and the other constituent members can also be conventionally known. Nor.

[0012]

[Effect of device]

 As is clear from the above description, according to the present invention, the cooling pipe provided between the lower part of the unit cell assembly and the heat insulating container and the external heat exchanger are connected to the lower part of the heat insulating container. With the configuration that the unit is taken out from the outside, there is no place where the cooling pipe and the unit cell come close to each other except the part in contact with the cooling plate, the unit cell is not partially cooled, and the unit cell assembly The overall heat distribution can be improved.

[Brief description of drawings]

FIG. 1 is a view showing a configuration of an example of a unit cell assembly with a cooling mechanism of the present invention.

FIG. 2 is a view showing the configuration of another example of the cooling pipe take-out portion of the unit cell assembly with a cooling mechanism of the present invention.

FIG. 3 is a diagram showing a configuration of an example of a conventional unit cell assembly with a cooling mechanism.

[Explanation of symbols]

 1 Insulation container 2 Single cell 3 Cooling plate 4 Cooling pipe 5 Heat exchanger 6 and 7 Joint part 8 Pipe 9 and 10 Joint part

Claims (1)

[Scope of utility model registration request] 1. A plurality of unit cells are housed in a heat insulating container, a cooling plate is arranged between the lower part of the housed unit cells and the heat insulating container, and an external heat exchanger is provided by a cooling pipe connected to the cooling plate. A unit cell assembly with a cooling mechanism, wherein a cooling pipe connected to a cooling plate is configured to be taken out from a lower portion of a heat insulating container to a unit cell assembly with a cooling mechanism having a connection structure.