JPH0475432A - Battery checker for nonutility generating facility - Google Patents

Abstract

PURPOSE:To check the state of charger and battery automatically and to make an automatic judgment whether abnormal charging is caused by deterioration of battery or malfunction of charger by detecting the noload voltage of charger isolated on the circuit during test operation of self-starting motor and the voltage of discharging battery. CONSTITUTION:Upon start of periodic maintenance operation, a charger 1 and a battery 3 are isolated from each other on the circuit. Consequently, a starting current flows from the battery 3 and the voltage of the battery 3 at that time is detected through a voltage detector 4 and when thus detected voltage drops below a reference voltage, current flows through the display element LED2 in an alarm display circuit 6 and the exciting coil of a relay Ry2 thus lighting the display element LED2. On the other hand, a voltage detector 2 detects noload voltage of the charger 1 and when thus detected voltage exceeds a rated range, current flows through the display element LED1 in an alarm display circuit 5 and the exciting coil of a relay Ry1 thus lighting the display element LED1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a storage battery check device for private power generation equipment.

[Conventional technology] It is essential that private power generation equipment can be started reliably in an emergency. Therefore, regular maintenance operations are required, but since it is a hassle for humans to manually check the startup every 1 to 2 weeks, it is actually necessary to install a weekly timer on the private power generator itself. In many cases, a time-limiting means is incorporated to automatically start the machine at a specified day and time to save labor.

However, this periodic maintenance operation device is only used to check that the in-house power generation equipment will start properly, and to improve the circulation of lubricating oil and cooling water in the generator drive prime mover (engine) by running it regularly. However, their main purpose is to prevent rust, etc., and they generally do not include a function to simultaneously check the state of charge of the storage battery for starting the starter motor of the prime mover.

Therefore, in order to check how much charge the storage battery has, a method is used in which a person performs a manual startup test and measures the voltage of the storage battery at that time to check whether there is any abnormality.

If an abnormal voltage is detected, the storage battery will be replaced if necessary, taking into account the usage period of the battery.

However, in the conventional method, a person had to operate the private power generation equipment and measure the storage battery voltage with a meter, which required considerable effort.

[Problems to be Solved by the Invention] However, in the conventional method, a person cannot check the storage battery without operating the private power generation equipment and measuring the storage battery voltage with a meter, which requires considerable effort.

Furthermore, when a charging abnormality occurs in the storage battery, the following two items are considered to be the cause.

a) Charging abnormality due to capacity deterioration of the storage battery b) Charging abnormality due to failure of the charger that charges the storage battery In response to these abnormalities, replace the storage battery for the cause of a), and replace the storage battery for the cause of b). There was a problem in that the user had to further investigate the cause of the problem because the treatment would be different depending on each abnormality, such as repairing the charger.

The present invention has been made in view of the above-mentioned problems, and its purpose is to be able to automatically check the status of the charger and storage battery without using human hands, and in the event of abnormal charging. To provide a storage battery check device for private power generation equipment that can automatically determine whether the problem is due to deterioration of the storage battery or a failure of the charger.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention is used for a private power generation facility equipped with a periodic maintenance operation means that performs test operation at a certain period for a certain period of time using a time limit means. Means for separating the storage battery that drives the cell motor of the machine drive prime mover and the charger that charges the storage battery in a circuit during the starting of the cell motor in the test operation, and a voltage detector that detects the no-load voltage of the separated charger. means, voltage detection means that is separated and detects the voltage of the storage battery during discharge, and is provided corresponding to each voltage detection means and generates and maintains an alarm output when the corresponding voltage detection means detects an abnormal voltage. It is equipped with means.

[Function] According to the present invention, it is possible to detect abnormality or normality of the storage battery by detecting the voltage of the storage battery during discharge during a test run that is automatically and periodically performed, and also to detect whether the charger is under no load. By detecting the voltage, it is possible to detect whether the charger is abnormal or normal, and it is also possible to confirm whether the charging abnormality is caused by the storage battery or the charger through an alarm. Therefore, the charger and storage battery can be checked automatically and regularly without manual intervention, and it is possible to reliably deal with abnormal situations.

[Example code] The present invention will be explained below with reference to Examples.

Figure 1 shows the circuit of the embodiment, in which a voltage detector 2 is connected to the charger 1 to detect the no-load voltage of the charger 1 connected in parallel, and a cell motor of the prime mover of the private power generation equipment is connected. A normally closed switch element S that is turned off in response to a start command from a periodic maintenance operation device (not shown) that starts M.
1, the storage battery 3 is connected to the charger 1. A voltage detector 4 for detecting the voltage of the storage battery is connected in parallel to the storage battery 3, and two alarm display circuits 5.6 are connected in parallel via a normally closed reset switch SW.

The alarm display circuit 5 includes a switch element S2 controlled by the voltage detector 2 and a switch element Sl in series with a parallel circuit of the display element LED and the excitation coil of the relay Ry.
Similarly, a series circuit with a switch element S, which is turned on in response to a starting command, is connected, and a relay contact r of a relay Ry1 is connected in parallel to the series circuit of the switch elements 32 and 33.

The alarm display circuit 6 includes a switch element S controlled by the voltage detector 4 in series with a parallel circuit of the display element LED2 and the excitation coil of the relay Ry2, and the switch element S1.
Similarly, a series circuit with a switch element S5 which is turned on in response to a starting command is connected, and a relay contact r2 of a relay Ry2 is connected in parallel to the series circuit of switch elements S4 and S35.

Next, the operation of this embodiment will be explained.

First, in the periodic maintenance operation means, when periodic maintenance operation is started by the action of the time limit means and a starting command for the starter motor M is output, the switch element S1 is turned off and the switch elements S3 and S5 are turned on. By turning off the switch element S1, the charger 1 and the storage battery 3 are separated in terms of the circuit.

Then, since the starting circuit of the starting motor M is turned on, a starting current flows from the storage battery 3, and the voltage detector 4 detects the voltage of the storage battery 3 at that time, and detects a certain reference voltage (this value is within the allowable input range of the starting motor M, which is the load). (different from each other), it is detected that there is an abnormality, the switch element S is turned on, and the display element LED2 of the alarm display circuit 6 and the relay Ry2 are turned on.
Current flows through the excitation coil.

Therefore, the display element LED2 lights up, and the relay contact r2 of the relay R'j2 is turned on, so that the relay Ry2 is self-held. Due to this self-holding, even if the switch element S, which is turned on in response to a starting command, is turned off, the display element LED
2 remains lit.

On the other hand, the voltage detector 2 detects the voltage of the charger 1 when there is no load, and if the voltage of the charger 1 exceeds a predetermined rated range, it is detected that there is an abnormality, and the switch element S
, is turned on, and current flows through the display element LED of the alarm display circuit and the excitation coil of the relay Ry+.

Therefore, the display element LED lights up, and the relay contact rl of the relay Ryl is turned on, so that the relay Ryl is self-held. Due to this self-holding, even if the switch element S3, which is turned on in response to a starting command, is turned off, the display element LED,
will remain lit.

In this way, when the voltage of the storage battery 3 drops below a certain level, an alarm is displayed by lighting up the display element LED2.
When the voltage of charger 1 exceeds the rated range, the display element LEDI
An alarm is displayed by lighting up.

After the alarm confirmation is completed, switch element S3. After S4 is turned off, press the reset switch SW to turn it off.
The self-holding circuit of relay RyR3'2 of each alarm display circuit 5.6 is released, and each display element LED, . . . LED2 is turned off.

If the display element LED lights up, it is known that the charger 1 needs to be repaired, and if the display element LED 2 lights up, it is known that the storage battery 3 needs to be replaced.

Note that instead of the display elements LED and LED2, a sounding element such as a buzzer may be used, or a contact output as a transfer signal to the outside may be used.

[Effects of the Invention] The present invention is used for a private power generation facility equipped with a periodic maintenance operation means that performs test operation at a constant period for a certain period of time using a time limit means, and includes a storage battery that drives a starter motor M of a prime mover for driving a generator; means for separating the charger for charging the storage battery in the circuit during starting of the cell motor M in the test operation;
A voltage detection means for detecting the no-load voltage of the separated charger, a voltage detection means for detecting the voltage of the separated storage battery during discharge, and a corresponding voltage detection means provided corresponding to each voltage detection means. Since it is equipped with a means for generating and maintaining an alarm output when an abnormal voltage is detected, it is possible to detect abnormality or normality of the storage battery by detecting the voltage of the storage battery during discharge during test runs that are automatically and periodically performed. It is also possible to detect whether the charger is abnormal or normal by detecting the no-load voltage of the charger, and can also detect whether the charging abnormality is caused by the storage battery or the charger by outputting an alarm. As a result, it is possible to check the charger and the storage battery without using human hands, and it is possible to quickly take action in the event of an abnormality.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment of the present invention, where 1 is a charger;
2.4 is a voltage detector, 3 is a storage battery, 56 is an alarm display circuit, LED2 is a display element, S, ~S6 are switch elements, Ry+, Ry2 are relays r l + r 2
is a relay contact, and M is a starter motor. Agent Patent Attorney Ishi 1) Choshichi

Claims (1)

[Claims] (1) It is used for private power generation equipment equipped with a periodic maintenance operation means that performs test operation for a fixed period at a fixed period using a time-limiting means, and includes a storage battery that drives the cell motor of the prime mover for driving the generator, and a charger that charges this storage battery. a voltage detection means for detecting the no-load voltage of the separated charger; and a voltage detection means for detecting the voltage of the separated storage battery during discharge. A storage battery check device for private power generation equipment, comprising: a means for generating and maintaining an alarm output when the corresponding voltage detecting means detects an abnormal voltage, and is provided corresponding to each voltage detecting means.