JPS6180775A - Specific gravity sensor for lead storage battery - Google Patents

Abstract

PURPOSE:To maintain a stable voltage for a long time by positioning a diode to prevent a discharge current and to pass only a charging current in a Pb electrode. CONSTITUTION:When a charge and discharge device 15 is in a charging state, the flow of a current returns to the charge and discharge device 15 through a PbO2 electrode 11, and electrolyte 3, a Pb electrode 9 and a diode 13. Since charging to a negative plate 4 is prevented by a diode 14, the current is utilized to only the charging of the Pb electrode 9. On the other hand, when the charge and discharge device 15 is in a discharging state, the current returns to the charge and discharge device 15 through the diode 14, the negative plate 4, the electrolyte 3, the PbO2 electrode 1. In this case, the discharging in the Pb electrode 9 of a specific gravity sensor is prevented by the diode 13. Whereby, all of the charging current volume in the Pb electrode 9 is applied to retrieve self-discharge. Accordingly, early deterioration in the Pb electrode 9 due to the self-discharge etc. is eliminated and a stable voltage is indicated for a long time.

Description

[Detailed description of the invention] [Industry K17), FLJ field] The present invention relates to a specific gravity sensor for measuring the electrolyzed specific gravity of a lead-acid battery. You can know it most accurately by using the ratio.

Is this the 7th understanding of Keibi? This is because the specific gravity also changes in proportion to the discharge and air weight, depending on the change in the volume (chemical reaction). Therefore, by measuring the tonkai specific loading, it is possible to clearly know how much the battery has been discharged, or how much more can be discharged.As a piezoelectric measurement method, suction It is common to use a type float meter, but recently, batteries and chargers have been installed to automatically control the amount of fishing. A specific gravity sensor that combines the two is now becoming more convenient.

Conventionally, 00 types of specific gravity sensors have been Pb (Js
Using the tffl pair of Pb and Pb, give a 100-line relationship between the "level difference" shown by the pole pair and the value of the sulfuric acid specific gravity that is released. The name Koromono has been in use for some time.

[Problem that the invention seeks to solve]

However, in the case of the electric-type specific-gravity sensor described in 7, during toilet use, the cell self-discharges and produces lead sulfate (Pb8U<), and it no longer shows a normal potential within a short period of time. Avoid this kind of situation, you idiot, the 11-layer fl of the specific gravity sensor! A method of activating by photoelectrically periodically has been proposed; It takes a long time to be able to determine the exact specific gravity of a single pod.

In order to eliminate this fraction, a method has been proposed in which both the bending layers of the specific gravity sensor are partially discharged at the same time after the light path, thereby accelerating the stabilization of the potential difference.

However, according to this method, Pb1Jz of the specific gravity sensor
.

Pb! Among the 11iiKtl, Pbrlq deteriorates faster, this is because P)+1[tiger has a higher self-discharge rate than PbUztunkoshi, due to self-neglect acceleration factors such as sb contamination. .

Therefore, in more detail, we photoelectronized the specific gravity sensor to find out the reason why it takes time to complete the separation in the open state F1 after one PbO21.
1L kite and Pb Electron microscope V divided into one kill and one result, PbU
Based on the results of Kouko et al., who found that the cause is 2%, the present invention proposes a new method for summer use of a specific gravity sensor, which will be described in detail below.

[First Means to Solve the Problems] The present invention solves the drawbacks of the conventional direct-containment type ratio q (cessor) such as f and The aim is to provide a ratio sensor that can measure with high precision.The gist is that the photoelectric power of the specific gravity sensor is Pb (J2
Although the electric layer is applied to the Pbt rain, the discharge should be applied only to the Pb (J + direct microscope). As a result, the Pb JI pole should be able to use all of the photoelectric T distribution storm to recover the self-discharge. Therefore, the potential can be maintained stably over a long period of time.

〔Example〕

Hereinafter, the present invention E1 will be explained with reference to the drawings regarding the actual power of the specific gravity sensor for other uses. The figure below shows a specific gravity sensor installed in a battery.
This shows the electrical circuit for the static and unreliable electrostatic sensor. 1 L is the battery case, 2 is the lid open, 3 is the same electrolyte, 4 is the same negative electrode plate, 6 is the same negative Mizuko, 6 is the same separator.

7 is the same 11EI! Terminal 8 is a specific gravity sensor support, ta
9 is a piezoelectric sensor Pbtffl, 10 is a lead wire of PbrKi9, which can be screwed onto the liquid port of the iso lid 2.
11 is the Pb0z subcondyle of the specific gravity sensor, 12 is P
In h021, the lead wire of 11, 13 is the Pb diode inserted so that the photovoltaic current is facing 9, and the diode is inserted so that the dL current is flowing, 14 is the direction in which the negative electrode plate 4 of the battery is left. 15 is a device for charging/discharging the specific gravity sensor, and a constant charging/discharging FL flow is configured to flow smoothly. 16 is a comparison.
The potential difference when the sensor is open is a constant meter. Photodischarge device 1
The operation of 5 is photoelectric for 1 hour, discharge for L minutes immediately after that, and open circuit I.
One period is made up of 6 hours.

In this case, when the photodischarge device R15 enters the photovoltaic state, the flow of stagnation in r is first Pb0t1%1.
Enter the lead ring L2 of L, Ph02 Electron Microscope 11°'FL Analysis 3. It reaches the lead wire 10 of the Pb electrode 9 via the PbgL electrode 9, and returns to the device 15 for charging and discharging the diode 13. In this photoconductor, Pbtffl9 and the negative electrode 4 are connected via a diode 14,
Photoelectricity to the negative electrode plate 4 is blocked by the diode 14.
Because? [The current is used only for PJ@g's photoelectric discharge, while the photodischarge device 15 is ready for release.
Contrary to the photoelectric case, the current flows through the diode [4, negative electrode plate 4. PbtJz direct pressure 11. In this case, the discharging of the Pb filter 9 of the specific gravity sensor is blocked by the diode 13.
Instead of this, the negative electrode plate 4 is discharged.

As described above, in the embodiment of the present invention, P of the specific gravity sensor is
Both the bJff19 and PbO2 electrodes IL are charged, and only the Pb (Jz) electrode 11 is discharged. Can you use it for recovery? There is no possibility that t[i9 deteriorates early due to self-discharge, etc., and the temperature becomes stable for a long period of time, showing a potential of 1°C.

Figure 2 shows the comparison of changes over time in the setter voltage corresponding to the specific gravity of the electrolytic battery by installing a specific gravity setter of Kibu Shiromei and a conventional one in the same battery. The product of the present invention is still operating normally even after 4 years, while Sessa's Nobaki takes 2 to 3 years.

[Effect of enlightenment]

As described above, the specific gravity sensor of the present invention has PbCl2
゜The potential difference between the Pb1lfii and the I and I is stabilized early, and the self-emission of 1'h K iγ is sufficiently recovered by light, so measurements can be made with good spacing. This greatly contributes to the conservation of hunting at Naoike.

[Brief explanation of drawings]

Figure 1 is a configuration diagram showing one actual example of the uninvented battery-based specific gravity sensor, and Figure 2 is a configuration diagram showing the present invention's specific gravity sensor for batteries and a conventional battery-based specific gravity sensor. FIG. 3 is a characteristic diagram showing a comparison of changes over time in sensor 1 pressure corresponding to α-resolved specific gravity of the specific gravity sensor. 5... Negative electrode terminal of Heike, 8... Specific gravity sensor support, 9... Pb~[@, 10.
... f'11 Nori-de butterfly, 11... Pb0
1 wire, 12... Pb (Jz lead wire, ta, t4... diode, 15...
River/Charge/Discharge Lrf, Bag R1 [6... Potential difference measuring device. Method 1 Kinki 4: 1 Ji front twill cloth 1 roll '7: Pb stool A set
t: Pbθ Yuqiao right E-i, 5: Light 2 copy t
A ship! /A: 脣位笈＠Standard

Claims (1)

[Claims] In a specific gravity sensor that measures the specific gravity of an electrolyte using the potential difference between PbO_2 and Pb electrodes, unlike a charging/discharging device that supplies a constant charging/discharging current, the Pb electrode blocks the discharging current and only receives the charging current. A specific gravity sensor for a lead-acid battery, characterized in that a diode is arranged so that the current flows, and subsequent discharge is performed between a PbO_2 electrode and an electrode other than the Pb electrode.