JPH0284023A - Battery monitor/controller - Google Patents

Abstract

PURPOSE:To prevent explosion by performing forcible switching from recharge to floating(self-discharge prevention) automatically upon detection of overcharge or fault in a ventilation fan thereby stopping production of gas. CONSTITUTION:Upon detection of overcharge and fault in a ventilation fan, a forcible charge/floating switching section 3 performs forcible switching from recharge to floating and stops production of combustible gas. During automatic recharge operation, overcharge relay contact (cal) and a ventilation fan abnormal relay contact (fan) are connected with an existing automatic recharge as shown on the circuit diagram thus carrying out forcible switching from recharge to floating. In case of manual switching, the ventilation fan abnormal relay B contact is connected through terminals t15, t16 with a rectifier control circuit thus carrying out forcible switching from recharge to floating. By such arrangement, two main factors of explosion, i.e., mass production of combustible gas and permeation of combustible gas due to abnormality of ventilation fan, can be eliminated.

Description

Detailed Description of the Invention (1) Purpose of the Invention [Industrial Application Field 1] The present invention is used to prevent explosions caused by flammable gas generated during charging of storage batteries and to determine deterioration of storage batteries by monitoring charging time. This invention relates to a storage battery monitoring 1III] device.

[Prior art] Back-up torpedo device Shimi-l! The existing rectifier installed at the iQ station has an automatic charging device controlled by the rectifier control circuit that automatically charges the storage battery evenly (recovery charge + replenishment M) when the power outage is restored, in order to recover the storage battery discharge due to a power outage. However, explosion accidents due to flammable gas have occurred due to overcharging due to circuit failure or deterioration of storage battery performance, or failure of the ventilation fan.

[Problems to be Solved by the Invention] The present invention prevents explosion accidents caused by flammable gas in storage batteries, as well as grasps the deterioration status of storage batteries, improves service continuity, protects equipment, and ensures safety. The aim is to provide a storage battery monitoring system w5Ar that supplies stable communication power.

(2) Structure of the Invention [Means for Solving the Problems] The storage battery monitoring 11JIII\A device of the present invention includes an overcharge detection unit that detects overcharging when charging a storage battery, and a stoppage of the drive of a ventilation fan in the storage battery compartment. a fan abnormality detection unit that detects the
A switching unit is provided to switch between charging and floating of the storage battery, and the switching unit is switched from charging to floating based on the detection output of the overcharge detection unit or the fan abnormality detection unit to prevent flammable gas from occurring in the room. In order to fundamentally eliminate the causes of charging, we will monitor charging m1WJ and indoor ventilation status, and if overcharging or ventilation fan failure is detected, we will strongly switch from charging to floating (self-discharge prevention). The switch is automatically switched to stop gas generation and prevent explosions.

[Example] An embodiment of the invention will be described with reference to FIG.

The storage battery supervision system 61114 of the present invention includes a charging detection section 1, a fan abnormality detection section 2, a charging/floating forced switching section 3, an automatic/41 charging switching section 4, and an alarm display/transfer section 5. Except for the wind pressure sensor 6 of the fan abnormality detecting section 2 and the automatic/manual charging switching section 4, it is built into a single housing (not shown) and connected to the existing rectifier giIt III 1i11 circuit (not shown).

The overcharge detection section 1 has a duplex circuit in order to prevent failure of detection due to failure of the rectifier control circuit or the like.

In the figure, CI, 02 is a starting relay for the device Y of the present invention, which is activated by a charging signal from the rectifier to terminal t2, and T1 is the time required for the ventilation fan (not shown) to enter normal operation and settle at the start of charging. T2 is a timer relay that sets the time from the start of charging to overcharge detection, and is used to prevent false detection of ventilation fan abnormality alarms. Charging time (set by the existing automatic charging in-mouth timer)], T3 is a timer relay to prevent false detection of overcharging alarm when automatic charging ends normally, and TLA is a timer! J L/-T31)MU)J')
1z-1TIX, T2x are timer relays T1. T
If 2 is energized for a long time, it will be damaged, so the auxiliary relay for protection, CAL is an overcharge detection relay, and N01
Self-holding is performed by self-holding relay A contact cut of No. 14, recovery is performed by the recovery push button switch P81 of No. 14, and relay ACI1. TFI installed automatic charging device relay R
No. 24 relay A contact ry by Y (not shown)
A self-holding circuit is formed by relay A contact ACD of N089, and TLX is for starting timer relay T3, and is connected to timer relay TL (not shown) in the existing automatic charging device, overcharge detection relay CAL, and fan. Relay FAN operates by closing relay A contacts tl, cal, and fan.

This overcharge detection section 1 is designed to have a redundant circuit in consideration of the failure of the rectifier control circuit, automatic charging device, and overcharge detection section 1, and the first system is a relay ACD1
1 tie vlJ L/-T3, auxiliary relay TLA, and the second system is formed by timer relay T2.
, formed by auxiliary relay T2X. That is, when the rectifier control circuit fails or the first system fails, detection is forcibly performed by the second system. Through the overcharge detection by the overcharge detection section 1, eight causes of human ω-emission of combustible gas generated from the storage battery are detected.

The fan abnormality detection unit 2 uses the wind pressure of the ventilation fan during automatic manual charging to detect a no-wind pressure state at the time of failure. That is, an abnormality in the ventilation fan is detected by the wind pressure sensor +j6, and the fan relay FAN is operated and self-maintained by the relay A contact jan of No. 20.

This detects all electrical circuit failures and failures in the ventilation fan itself, which are the causes of ventilation fan abnormalities, and detects the cause of flammable gas filling the dormitory.

Further, the alarm can be restored only by using the restoration push button switch PB2.

When the charging/floating forced switching unit 3 detects overcharging or ventilation fan failure, it strongly switches from charging to floating to stop the generation of flammable gas, but there are the following two cases. That is, during automatic charging, connect the overcharge relay contact Ca1 and ventilation fan abnormality relay contact fan to the rR automatic charging device as shown in the circuit diagram to force a switch from charging to floating, while when switching manually, the ventilation fan abnormality relay B contact fa
n to terminal t15. It is connected to the rectifier M control circuit via t16 and performs strong Ill switching from charging to floating. This solves the two major causes of explosions: the generation of large amounts of flammable gas and the room filling with flammable gas due to abnormal ventilation fans.

The automatic/manual charging switching section 4 performs manual charging in case the automatic charging alone cannot recover the battery after a long power outage. In consideration of operability and to prevent forgetting to switch, it is separated from the device Y of the present invention and attached near the rectifier operation section, and the manual side is indicated by the light emitting diode LED1 No. 15.

The alarm display/transfer unit 5 transfers the status signal to the monitoring station as before during normal charging, and transfers the status signal to the monitoring station as a major alarm when overcharging or failure of the ventilation fan is detected. That is, when overcharging or ventilation fan abnormality is detected, a terminal block FB is provided for lighting up and displaying an alarm on the light emitting diodes LED2, ED3, and transmitting the alarm to the monitoring station.

Alarms are sent to the existing alarm transfer device via the terminal block TB, but the newly added overcharge and ventilation fan abnormality alarms are sent to the terminal block T so that they are sent as major alarms.
B, and the normal charging signal is sent out as a status alarm as before.

[Function] First, the operating power source (DC-21V or DC-21V) of the device Y of the present invention
48V) from the operating current terminal of the rectifier to No, O and 3.
input to terminal t1 and end Ft3.

The activation of the device Y of the present invention in the case of automatic charging will be described below.

When the power outage is restored, the rectifier automatically charges evenly (recovers the storage battery discharge caused by the power outage. Charging 7 @ Voltage 2.26v/5e
ll) starts, a charging signal (
A ground signal (10) is sent out when the rectifier is charged. Starting relays CI and C2 are excited and operated by this charging signal. Then, the timer relays T1 and T2 are energized by the opening of relay Δ contact C1 of No. 3, and the charging time monitoring timer starts counting, and starts operating when each set time has elapsed. When the timer relay T1 operates, the auxiliary relay TIX operates by closing the timer A contact t1 of Mo2B, contacts the relay A contact t1x of N009, and maintains itself. Also, due to the operation of auxiliary relay T1X, No., 1
When relay contact t1x of No. 9 is opened, a failure detection circuit for the indoor ventilation fan is formed via relay A contact C2 of No. 9, which is on standby for closing in advance. At the same time, relay 8 contact t1x of No. 3 is opened to release the excitation of relay timer T1 and turn it off.

On the other hand, the indoor ventilation fan is automatically operated for about 30 seconds until normal operation due to the same charging signal from the rectifier.

Timer relay T2 is used to monitor the charging time, and when normal automatic charging ends, it will end within the timer set time, so the auxiliary relay T2x will not operate, but for the set time, T = recovery charging time + Supplementary charging time (10
11 + 411) Example, recovery charging time 25% discharge and old 150% discharge 611 75% discharge 8.5H Supplementary charge [1,? 0 due to the timer in the automatic charge detector
It can be set for up to 6 hours and is detected by No. 1 of the first system of overcharge detection section 1, No. 13 of relay A contact tla, and No. 12 of relay A contact t2x of the second system.

As described above, the circuit of the present invention '9A and Y is activated and prepares for detection of ventilation fan failure or overcharge.

In the case of automatic charging, charging/floating is strong before overcharging is detected! To explain the operation of the I+ switching section 3, the switch S
In the W on state (direct side), auxiliary charging is not performed, but when the switch SW is off (tights A contact tlfl!l>, auxiliary charging is performed within the set time, and a contact signal is sent to the rectifier on 9.10). , has a charging end signal sending circuit function within the automatic charging device.

FIG. 2 shows the relationship between the charging and discharging cycles of the storage battery, the relay A contact ry, and the timer A contact t1.

From the charging/floating strong III switching unit 3 and Fig. 2, when recovery charging is completed, No. 24 relay A contact ry closes.
If the switch SW is on at this point, equal charging ends.

The end of recovery charging is detected by an automatic charging device at 30% to 40% of the 10-hour rate current of the storage battery.

For example, in case of 3000A) I storage battery, 10 hourly rate current 3000/10 = 30OA detection current 300 signal) is sent to the rectifier υIgIJ circuit to switch from equal charging to maintenance charging.

Therefore, to explain the detection of overcharging by the start relay TLA of the first system step by step, when the recovery charging is completed, the relay RY in the automatic charging ffi device operates, No. 24 relay A contact ry closes, and No. No. 22 relay ACD operates, and No. 19 relay A contact ACD opens to self-hold. When the supplementary charging is completed, the timer relay TL in the automatic charging RI operates, and by opening the tine A contact t1 of N0123, a floating charging contact signal (loop (3) is sent to the rectifier control circuit.
No. 21
The starting relay TLX operates. This starting relay TI
-X operation closes the relay A contact tlx of No. 5, and the timer relay 3 of No. 5 is activated. If the equal charging is not completed even after the set time (30 seconds) has elapsed, the start relay TLA is operated by closing the timer A contact t3 of No. 86, and the relay Δ contact tla of No. 7 is closed to maintain self-holding. This starting relay TLA! By II operation, No. 13 relay A contact t1a is opened, overcharge detection relay CAL is activated, No. 14 relay A contact cal is closed, self-holding is performed, and overcharge is detected. Therefore, the overcharge detection circuit of the first system is designed to prevent switching from equal charging to maintenance charging due to failure of the rectifier control circuit.

When the overcharge detection relay CAL operates, the floating charging contact signal is sent to the rectifier again by opening the No. 21 relay A contact cai, and the light emitting diode LED2 is turned on by closing the No. 16 relay A contact cal. Then, an overcharge is displayed and an alarm is sent to the outside via the terminal block TB from the terminal t5. The determination as to whether equal charging or maintenance charging is performed depends on the presence or absence of a charging signal sent from terminal t4.

Next, the overcharge detection by the second system auxiliary relay T2X will be explained step by step. If the equal charging does not end even after the set time of the timer relay T2 has elapsed, the auxiliary relay will be activated by closing the timer A contact t2 of No. 10. Relay T2X is activated. Due to the operation of this auxiliary relay T2X, No. 1
By closing tine A contact t2x of No. 2, overcharge detection relay No. 13 CLΔ is energized and detects overcharging. Due to the overcharge detection relay CA1.471, a floating charging contact signal (loop signal) is sent to the rectifier control circuit by the relay A contact cal of No. 21, and a forced switch is made from equal charging to maintenance charging. Relay A
Due to contact Ca +rI'l formation, No. 1G light emitting diode LED2 lights up to indicate overcharging, and No. 1 [i
An alarm is sent to the outside via the terminal block TB through the terminal t5.

Further, to explain the detection of a ventilation fan failure step by step, the operation of auxiliary relay TlX9 closes the relay Δ contact tlx of 140.19, which serves as a semi-straightforward mechanism for detecting a ventilation fan failure. If the ventilation fan malfunctions and the wind pressure decreases, the wind pressure sensor +
A contact 6a in J6 closes, fan relay No. 19 FΔN operates, and relay A contact fan No. 20 closes to self-hold. N due to this fan relay FAN operation.

Relay A contact fan of No. 21 is closed, and a floating charging contact signal is sent to the rectifier VT unit to forcefully switch from equal charging to maintenance charging, and by closing relay A contact fan of No. 17, light emitting diode No. 17 is activated. ED3 lights up to indicate a ventilation fan failure, and terminal t6 of No. 17
The alarm is sent to the outside via the terminal block TB.

In the case of 1,000, it is possible to forcefully switch from equal charging to maintenance charging by modifying the rectifier control circuit using relay B contact f'an of fan relay FAN.

Furthermore, to restore the 11i5 alarm due to overcharging and ventilation fan, No. 14 in the case of restoration of overcharging 74 yen 1 alarm.
Press the recovery push button switch PBI, and overcharge detection relay C
Restore AL, and in case of ventilation fan failure, No.
, press the recovery push button switch PB2 of 20, No. 19
Restore the fan relay FAN.

(3) Effects of the invention Thus, in order to fundamentally eliminate the causes of large amounts of flammable gas being generated and filling the room, the present invention monitors charging time and indoor ventilation status using a wind pressure sensor, and also monitors overcharging. When overcharging or ventilation fan failure is detected, the system automatically forcibly switches from charging to floating, stopping gas generation and preventing explosions, and also issues an alarm when overcharging or ventilation fan abnormality is detected. The alarm is sent to the monitoring station as a major alarm. In addition, by monitoring the charging time, the deterioration state of the storage battery can be ascertained, which can be used as necessary judgment material for capacity tests, etc. Conventionally, such a monitoring and control function was not provided, leading to explosions of storage batteries, but with the present invention, it is possible to fundamentally prevent storage battery explosion accidents caused by flammable gases generated during battery charging. Become.

As a result, services can be maintained and improved, and safety and security of communication facilities can be ensured, providing excellent effects.

[Brief explanation of the drawing]

FIG. 1 is a sequence circuit diagram of the device of the present invention, and FIG. 2 is a correlation diagram between the charging/discharging cycle of the storage battery and the relay A contact ry and timer A contact t1 in the charging/floating forced cut section. Y...Storage battery monitoring and control device 1...Overcharge detection section 2...Fan abnormality detection section 3
...Charging/floating forced cutting section 4...Automatic/manual charging cutoff H section 5...Alarm display/transfer section 6...Wind pressure sensor Figure 2

Claims (1)

[Scope of Claims] 1. An overcharge detection section that detects overcharging when charging a storage battery, a fan abnormality detection section that detects stoppage of the ventilation fan drive in the storage battery room, and a switch that switches between charging and floating the storage battery. A storage battery monitoring and control device 2, characterized in that the switching unit is switched from charging to floating based on the detection output of the overcharge detection unit or the fan abnormality detection unit, and detects overcharging when charging the storage battery. an overcharge detection section, a fan abnormality detection section that detects the stoppage of the ventilation fan drive in the storage battery room, an alarm display/transfer section that moves to the fan abnormality detection section and the overcharge detection section, and an alarm display/transfer section that detects charging and floating of the storage battery. A storage battery monitoring and control device, comprising: a switching section for switching over, and switching the switching section from charging to floating based on the detection output of the overcharge detection section or fan abnormality detection section, and displaying an alarm and transmitting the alarm to the outside.