JPH0688047U - Oil-immersed battery - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain an oil-immersed battery that can immediately follow changes in water pressure. [Configuration] Electrically insulating oil passage port 11 at the bottom of the battery storage tank 1
And the electric insulating oil 13 is filled in the electric insulating oil passage 11, and a part of the diameter of the electric insulating oil passage 11 is larger than the diameter of the electric insulating oil passage 11. The seawater-resistant hose 12 is detachably attached, and the water pressure received at the portion of the large-diameter hose portion 16 far from the electric insulating oil passage 11 is increased so that the electric insulating oil 13 can be stored in the battery storage tank 1 And oil resistant, seawater resistant hose 1
By moving between 2 and 2, the pressure difference between the inside and outside of the battery storage tank 1 is compensated. [Effect] The large-diameter hose portion can immediately follow a rapid change in water pressure to compensate for the pressure difference between the inside and the outside of the battery storage tank.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an oil-immersed battery, and more specifically, it is used as a main power source for deep-sea equipment, submersible research vessels, diving work robots, etc., or as an emergency power source for instruments and communication equipment mounted on them. The present invention relates to an oil-immersed battery in which electric insulating oil is allowed to flow in and out of the battery storage tank to compensate for the pressure difference inside and outside the battery storage tank.

[0002]

[Prior art]

 In recent years, deep sea equipment, diving research vessels, diving work robots, etc. have been required to have large capacity batteries for main power supply due to deeper diving depths and longer diving times, and the instruments installed Due to the diversification of communication equipment and communication equipment, there is an increasing demand for larger capacity batteries as emergency power sources.

The battery as described above occupies 10 to 30% of the total amount of drainage of equipment mounted in deep-sea equipment and the like, and is therefore provided in a battery storage tank provided outside the pressure-resistant shell.

In addition, an elastic bag pressure equalizing device including an oil-resistant, seawater-resistant hose or a rubber bag containing electric insulating oil is attached to such a battery storage tank, and the elastic bag pressure equalizing device is installed by the water pressure in the deep sea. When the gas remaining in the device is compressed, the oil-resistant, seawater-resistant hose or rubber bag is compressed, and as a result, the electric insulating oil is injected into the battery storage tank and the pressure difference between the inside and outside of the battery storage tank is reduced. It's gone.

A conventional example of the oil-immersed battery having the above structure will be described with reference to FIGS. 4 and 5.

The oil-immersed battery shown in FIGS. 4 and 5 has a plurality of cells 10 housed therein, the upper part of which is sealed by a lid 9 and the oil holes 3 in the partition walls 4 at the bottom or sides thereof. And a stretchable bag pressure equalizing device 2 attached to the bottom or side of the battery storage chamber 1. Seawater flows in from the seawater circulation hole 18 provided in the cover 6, and the pressure causes the electric insulating oil from the expansion bag pressure equalizer 2 to flow into the battery storage tank 1 through the oil passage hole 3 to store the battery. The pressure difference between the inside and the outside of the tank 1 is compensated.

In FIGS. 4 and 5, 5 is a flange portion of the expansion bag equalizing device 2, 7 is a flange portion provided on the cover 6 of the expansion bag equalizing device 2, and 8 is the cover 6 and the battery housing. It is a bolt for connecting with the tank 1.

[0008]

[Problems to be solved by the device]

 In the conventional oil-immersed battery described above, it is necessary to increase the size of the expansion bag equalizer 2 as the battery capacity increases, which causes the cover 6 to increase in size and increase the battery weight and the space occupied by the battery. was there.

Further, it becomes difficult to airtightly and liquid-tightly connect the cover 6 and the battery storage tank 1, and there is a problem that a highly reliable large-capacity oil-immersed battery cannot be obtained.

In addition, in the above conventional oil-immersed battery, when the depth of deep-sea equipment, diving research ship, diving work robot, etc. is rapidly changed, inflow or discharge from the seawater circulation hole 18 provided in the cover 6 is performed. There was a problem that the expansion bag equalizer 2 could not follow the change in the pressure of the outflowing seawater, and the pressure difference between the inside and outside of the battery storage tank 1 could not be properly compensated.

[0011]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a cell or a group of cells stored in a battery storage tank, and an electric insulation oil filled in the space in the battery storage tank and the space between the single cells. In the oil-immersed battery that has, an electrically insulating oil passage port is provided in the lower part of the battery storage tank, and the electrically insulating oil passage port is filled with electrically insulating oil. An oil-resistant, seawater-resistant hose having a flexible large-diameter hose that is larger than the diameter of the oil passage is detachably attached, and the large-diameter hose is far from the electrically insulating oil passage. So that the degree of deformation due to water pressure is greater than the degree of deformation due to water pressure in the portion near the electric insulating oil passage, and the electric insulation oil moves between the battery storage tank and the oil resistant seawater resistant hose. By the inside of the battery storage tank Pressure difference is characterized in being compensated.

[0012]

[Work]

 Therefore, according to the present invention, since the electrically insulating oil for compensating the water pressure in the deep sea is filled in the flexible oil resistant and sea water resistant hose, it is possible to prevent the increase in the weight of the battery. Moreover, since the hose can be housed in the space between the equipment mounted on the equipment for deep sea, the diving research ship, the diving work robot, etc., it is possible to prevent the occupied space of the battery from increasing.

Further, since the oil resistant and sea water resistant hose is configured to be detachably attached to the electrically insulating oil passage of the battery storage tank, the airtightness and liquid tightness of the attached portion should be improved. Therefore, the reliability of the oil-immersed battery can be improved.

In addition, since the oil-resistant and seawater-resistant hose is provided with a large-diameter hose portion having a diameter larger than the diameter of the electrically-insulating oil passage, a large amount of electrically-insulating oil can be stored in the large-diameter hose portion. It can be sealed, and the thickness of the hose can be increased on the side of the electrical insulating oil passage or reduced on the side of the electrical insulating oil passage to ensure smooth deformation of the large-diameter hose due to water pressure. Therefore, even if the depth of deep-sea equipment is rapidly changed, the pressure difference between the inside and outside of the battery storage tank can be compensated by immediately following the change in seawater pressure.

[0015]

【Example】

 FIG. 1 shows a first embodiment of the oil-immersed battery according to the present invention, in which an electrically insulating oil passage 11 is provided at the bottom of the battery storage tank 1, and the electrically insulating oil passage 11 is electrically insulated. One end of a flexible oil-resistant and seawater-resistant hose 12 containing oil 13 is detachably attached, and by attaching it, the closing plug coupler at the one end is opened, and by removing the closing plug coupler. Is blocked.

A large-diameter hose portion 16 is provided in a part of the oil-resistant and seawater-resistant hose 12, and the thickness of the large-diameter hose portion 16 is increased on the side of the electric insulating oil passage 11 and It becomes smaller as the distance from the electrical insulating oil passage 11 increases.

In FIG. 1, 14 is a sealing plug for sealing the other end of the oil-resistant, seawater-resistant hose 12, and 15 is the oil-proof, seawater-resistant hose 12 by the sealing plug 14. It is a sealing band for reliable sealing.

In the oil-immersed battery described above, the large-diameter hose portion 16 of the oil-resistant and seawater-resistant hose 12 is subjected to water pressure in the deep sea, and the electric insulating oil 13 enclosed thereby causes the electric insulating oil passage 11 to pass through. After that, the gas that flows into the battery storage tank 1 and remains in the battery storage tank 1 is compressed, so that the pressure difference between the inside and outside of the tank is compensated. At this time, the unit cell 10 in the battery storage tank 1 only receives the compressive force and is not destroyed by being directly affected by the water pressure in the deep sea.

The wall thickness of the large-diameter hose portion 16 is increased on the side of the electrically insulating oil passage 11 and becomes smaller as the distance from the electrically insulating oil passage 11 increases. Even if the water pressure received by the radial hose portion 16 suddenly changes, the change can be immediately detected by the portion having a small wall thickness.

FIG. 2 shows a second embodiment of the oil-immersed battery according to the present invention, in which a large-diameter hose portion 16 is provided in a part of the oil-resistant and seawater-resistant hose 12, the diameter of which is electrically insulated. The oil passage port 11 side is made smaller and becomes larger as it gets farther from the electrically insulating oil passage port 11 side, and other configurations are the same as those in FIG.

In the above-described second embodiment, the diameter of the large-diameter hose portion 16 is set to increase as the distance from the electrically insulating oil passage 11 increases. The received water pressure increases as the distance from the electrically insulating oil passage 11 increases, and a change in that portion can be immediately detected.

In each of the above-described embodiments, the large diameter hose portion 16 provided in a part of the oil resistant seawater resistant hose 12 is connected to the oil resistant seawater resistant hose 12 in an airtight and liquidtight manner. It goes without saying that it is good.

FIG. 3 shows a third embodiment of the oil-immersed battery of the present invention, in which a large-diameter hose portion 16 provided in a part of the oil-resistant and seawater-resistant hose 12 is vertically arranged and Is attached to the electrically insulating oil passage 11 so that the water pressure received at the lower portion of the large-diameter hose portion 16 becomes large so that a change in water pressure can be immediately detected.

[0024]

[Effect of device]

 As described above, the oil-immersed battery of the present invention can immediately follow a rapid change in water pressure to compensate for the pressure difference between the inside and outside of the battery storage tank.

[Brief description of drawings]

FIG. 1 is a view showing a first embodiment of an oil-immersed battery according to the present invention.

FIG. 2 is a view showing a second embodiment of the oil-immersed battery of the present invention.

FIG. 3 is a view showing a third embodiment of the oil-immersed battery of the present invention.

FIG. 4 is a cross-sectional view of a conventional oil-immersed battery.

FIG. 5 is a cross-sectional view of a conventional oil-immersed battery.

[Explanation of symbols]

 1 Battery Storage Tank 10 Single Cell 11 Electrical Insulation Oil Passage Port 12 Oil Resistance, Seawater Resistance Hose 13 Electrical Insulation Oil 14 Sealing Plug 15 Sealing Band 16 Large Diameter Hose Part

Claims (4)

[Scope of utility model registration request] 1. An oil-immersed battery comprising a single cell or a group of cells stored in a battery storage tank, and an electrically insulating oil filled in a space in the battery storage tank and a space between the single cells. In the above, in the lower part of the battery storage tank, an electrically insulating oil passage is provided, and the electrically insulating oil passage is filled with electrically insulating oil, and a part of the diameter is larger than the diameter of the electrically insulating oil passage. An oil-resistant and seawater-resistant hose having a flexible large diameter hose is detachably attached, and the degree of deformation of the large diameter hose at the portion far from the electrically insulating oil passage is electrically insulated. The degree of deformation due to water pressure in a portion near the oil passage is made larger, and the electric insulating oil moves between the battery storage tank and the oil-resistant, seawater-resistant hose so that the pressure inside and outside the battery storage tank is reduced. That the difference is compensated Characteristic oil-immersed battery. 2. The large-diameter hose portion is configured such that the wall thickness on the side of the electrically insulating oil oil passage is large, and becomes smaller as the distance from the electrically insulating oil oil passage is increased.
The oil-immersed battery according to the item. 3. An oil-resistant and seawater-resistant hose having a large diameter hose portion is vertically arranged, and an upper portion thereof is attached to an electrically insulating oil passage port. Oil-immersed battery. 4. The large-diameter hose portion has a small diameter on the electric insulating oil passage port side, and is made larger as the distance from the electric insulating oil passage port increases. Oil-immersed battery. 4. The oil-resistant and seawater-resistant hose having a large diameter hose portion is arranged vertically, and the upper portion is attached to the electrically insulating oil passage port. Oil-immersed battery.