JPH04357666A - Liquid filling mechanism for battery - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery fluid replacement mechanism capable of replenishing battery fluid in each cell of a vehicle battery so that the fluid does not drop below a predetermined level.

0002

2. Description of the Related Art Conventionally, vehicle batteries are composed of a plurality of cells. For example, a battery installed in an ordinary passenger car outputs a DC voltage of 12 [V] and is composed of six cells. In this vehicle battery, a plug is provided at the top of each cell, and when the battery fluid in each cell drops below a certain level, the plug is removed and the battery fluid is replenished.

0003

[Problem to be Solved by the Invention] However, in such a conventional battery, when the battery fluid in each cell drops below a certain level, when replenishing the battery fluid, the caps of each cell must be turned off one by one. It is necessary to remove the fluid and replace it with fluid,
Replenishing fluids takes time. In addition, since the plugs and injection ports for each battery cell are small, it is troublesome and cumbersome to remove these multiple plugs with gloved hands and replenish battery fluid to a predetermined level from each injection port. Ta. Furthermore, when replenishing the battery fluid while checking the liquid level for each cell, it is difficult to check the liquid level, so the liquid may be replenished above a predetermined level.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a battery fluid replacement mechanism that eliminates the above-mentioned problems and allows fluid replacement to be performed easily and reliably.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the battery fluid replenishment mechanism of the present invention is provided in the upper part of the battery tank 3 of the vehicle battery 1 which is composed of a plurality of cells 5, as shown in FIG. A replenishment tank 17 is provided for each cell 5 and is configured to be able to replenish battery fluid for replenishment into each cell 5. The main feature is that the battery fluid replenishing means 25 stops replenishing the battery fluid replenished from the tank 17.

[0006]

[Operation] With the above structure, when the liquid level of the cell 5 falls below a predetermined value, the liquid replenishing means 25 replenishes the cell 5 with battery liquid from the liquid replenishing tank. Then, when the liquid level of the cell 5 reaches a predetermined value, replenishment of battery fluid from the replacement fluid tank 17 is stopped. In this way, in the present invention,
The liquid replenishing means 25 automatically replenishes the cell 5 with battery liquid according to the liquid level of the cell 5.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

First, the overall structure will be described with reference to a perspective view of a battery equipped with a fluid replacement mechanism according to the present invention shown in FIG. In FIG. 1, a so-called lead-acid battery is used as a vehicle battery 1 in this embodiment. Further, this vehicle battery 1 has six cells 5 inside a battery case 3, and inside each cell 5, an anode plate, a cathode plate, an electrolyte, a separator plate, etc. (not shown) are housed. . Further, the battery case 3 includes a lower case 7 provided with a partition so as to constitute each cell 5, and an upper case 9 mounted on the upper side of the lower case 7. This upper case 9 has a thick rectangular shape, and has an anode terminal 11 and a cathode terminal 13 protruding from its upper part. Further, this upper case 9 is provided with a liquid stopper 15 for each cell that communicates with each cell 5, and by removing this liquid stopper 15, it becomes possible to measure the specific gravity of the battery liquid.
You can also replenish fluids. A fluid replacement tank 17 is formed in the upper case 9, and a communication hole 19 is formed from the upper surface of the upper case 9 toward the fluid replacement tank 17 as an injection port for battery fluid replacement. The replacement fluid stopper 21 is made removable. By removing the fluid replacement plug 21, fluid can be replenished into the fluid replacement tank 17. Further, the diameter of this fluid replacement plug 21 is larger than that of the fluid plug 15,
It has excellent workability such as attaching and detaching the fluid replacement plug 21 and replenishing battery fluid.

[0009] Also, the above-mentioned replacement fluid tank 1 inside the upper case 9
The bottom of each cell 7 communicates with the inside of each cell 5 via a fluid replacement mechanism 25 . The fluid replacement mechanism 25 as a fluid replacement means is connected to the fluid pipe 2.
7. It consists of a stopper 29 and a float 31. That is, the liquid pipe 27 has a conical portion 33 and a cylindrical portion 3 toward one end.
5 is formed, and a uniform thin tube 37 extends from the top of the conical portion 33 toward the other end, and the end of this thin tube 37 is communicated with the bottom of the replacement fluid tank 17. A float 31 is housed in the cylindrical portion 35 of the liquid pipe 27, and a stopper 29 is attached to the float 31 via a support rod 39. Although not shown, this float 31 is designed not to come off from the cylindrical portion 35. Further, the stopper 29 has the same shape as the inner conical shape of the conical part 33, and when it comes into contact with the inner conical part of the conical part 33 due to the buoyancy of the float 31, or when the float 31 moves downward in the figure, the stopper 29 becomes conical. It is adapted to come off the inner conical portion of the shaped portion 33.

The operation of this embodiment will be explained with reference to FIGS. 1 to 3 as appropriate.

First, it is assumed that the vehicle battery 1 has already been used and needs to be replenished with battery fluid. At this time, the replacement fluid stopper 21 is removed from the communication hole 19, and the replacement fluid tank 17 is replenished with the replacement fluid through the communication hole 19. This replacement fluid is replenished into each cell 5 through the replacement fluid tank 17 and the fluid replacement mechanism 25 of the vehicle battery 1.

When the battery fluid reaches the highest level in each cell 5, the float 31 gains buoyancy and presses the conical outer peripheral surface of the stopper 29 against the inner wall surface of the conical portion 33. As a result, replenishment of the replacement fluid to each cell 5 is stopped.

If this state is left as it is and the battery fluid in the cell 5 reaches a certain level again, the float 31 loses its buoyancy and the stopper 29 comes off the inner wall of the conical portion 33 due to gravity, so that the fluid replacement tank Battery fluid is supplied from 17 to the cell 5 . When the battery fluid reaches the highest level again by supplying the battery fluid to the cell 5, the float 31 gains buoyancy and the conical outer peripheral surface of the stopper 29 is pressed against the inner wall surface of the conical portion 33. , replenishment of the replacement fluid to the cell 5 will be stopped.

As described above, in this embodiment, when the level of the battery fluid in the cell 5 falls below a certain value, the fluid replenishment mechanism 25 of the vehicle battery 1 in the cell 5 operates to replenish the battery fluid, and when the level of the battery fluid in the cell 5 falls below a predetermined level. When this happens, the replenishment of the fluid can be stopped, making it possible to easily replace the fluid and naturally replenishing the fluid until the fluid replacement tank 17 is empty.

In the above embodiment, the structure is explained in which the fluid replacement tank 17 and each cell 5 are communicated with each other by the fluid replacement mechanism 25 constituted by the fluid pipe 27. The stopper 29 is brought into contact with this,
In addition, a passage may be formed from the top of the conical portion 33 toward the replacement fluid tank 17.

[0016]

[Effects of the Invention] As explained above, according to the present invention,
Since replenishment and stopping of battery fluid is automatically performed by the vehicle battery fluid replenishment mechanism provided in each cell, the effect of easily replenishing fluid can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of a vehicle battery equipped with a fluid replacement mechanism of the present invention.

FIG. 2 is an explanatory diagram showing an example in which the main parts of the embodiment of FIG. 1 are attached to a vehicle battery.

FIG. 3 is an explanatory diagram showing main parts of the embodiment of FIG. 2;

[Explanation of symbols]

1 Vehicle battery 3 Battery case 5 Cell 7 Lower case 9 Upper case 17 Replacement fluid tank 21　Fluid replacement stopper 25 Fluid replacement mechanism 27 Liquid pipe 29 Stopper 31 Float 33 Cone shaped part 35 Cylindrical part

Claims (1)

[Claims] Claims: 1. A replenisher tank provided on the top of a battery of a vehicle battery composed of a plurality of cells and configured to be capable of replenishing each cell with replenishing battery fluid; provided for each cell; 1. A battery fluid replacement mechanism, comprising fluid replacement means for stopping replenishment of battery fluid from a fluid replacement tank when the fluid level of the cell reaches a predetermined level.