CN1584619A - Generator battery charging device monitoring circuit - Google Patents

Abstract

A monitoring circuit of a generator battery charging device is suitable for a generator, a diesel fire pump and the like and comprises a traditional battery charging device and a monitoring device. In which a conventional battery charging apparatus inputs power and charges a rechargeable battery. In addition, the monitoring device is electrically coupled to the conventional battery charging device and is used for detecting the state of the power supply of the conventional battery charging device and the charging current of the rechargeable battery. When the power supply is not input into the traditional battery charging device or when the charging circuit of the charging current is broken, a warning signal is output.

Description

Generator battery charging device monitoring circuit

technical field

The present invention relates to a monitoring circuit for a charging device, and in particular to a monitoring circuit for a generator battery charging device.

Background technique

A generator is an important electrical device. It is an indispensable machine in many industries that require stable power supply. For example, interruptions in power supply often cause huge losses in semiconductor wafer fabs. Therefore, when the power supply of the power company is interrupted, ensuring the normal operation of the generator to maintain the normal operation of the factory is an important method to reduce losses.

When the known generator is activated, a rechargeable battery needs to supply sufficient power to the activation motor, and the activation motor drives the generator to activate, so as to supply emergency power to the power consumption terminal. In addition, the rechargeable battery needs a charging device for charging operation, so as to maintain sufficient power and provide energy for next reactivation. Unfortunately, when a condition occurs that requires generator activation, often the rechargeable battery does not have enough power to activate the generator. In addition, when the internal fuse is burned by the excessive charging current of the traditional battery charging device, it is often impossible to detect the operation of the internal fuse in real time, so that the traditional battery charging device cannot charge the rechargeable battery, resulting in failure of generators, diesel fire pumps, etc. Activate the operation and delay the golden time for emergency power supply to resume production. Therefore, not only the generators and diesel fire pumps cannot perform as expected, but also cause many unnecessary losses of time and money.

Utility model content

The invention provides a battery charging device monitoring circuit, which is suitable for generators, diesel fire pumps and the like. The battery charging device monitors in real time whether there is continuous input of AC power at the power supply terminal (mains terminal) of the charging device of the generator, and monitors whether the battery is continuously charged. In addition, when the internal fuse of the battery charging device is damaged, the battery charging device can also send out a warning signal.

To achieve the above and other objectives, the present invention proposes a monitoring circuit for a rechargeable battery charging device, which is suitable for generators, diesel fire pumps, etc., including traditional battery charging devices and monitoring devices. Wherein, the conventional battery charging device is electrically coupled to the power detection circuit for charging the rechargeable battery. Wherein, the monitoring device includes a power detection circuit, a current detection circuit and a man-machine interface. The power detection circuit is used to detect whether the power is input into the traditional battery charging device. The current detection circuit is electrically coupled to the traditional battery charging device, and is used to detect whether the fuse in the traditional battery charging device is burned. The man-machine interface is electrically coupled to the power detection circuit and the current detection circuit. When the power detection circuit finds that the power is not input to the traditional battery charging device or when the current detection circuit finds that the fuse of the charging circuit is burned, the man-machine interface outputs a warning signal. to notify supervisors.

According to a preferred embodiment of the present invention, the above-mentioned power detection circuit includes a relay and two fuses. Wherein, the relay detects whether the power detection circuit has power input. A fuse is coupled to the relay for protecting the circuit. In addition, when one of the fuses burns out, the power cannot be input to the power detection circuit, and the relay is triggered to generate a shutdown action.

According to a preferred embodiment of the present invention, the above-mentioned current detection circuit includes a fuse and an internal lock switch. Wherein, the fuse detects whether the first fuse is burnt. Wherein, the internal locking switch is coupled to the fuse, and when the fuse burns out, the internal locking switch is triggered to cause the internal locking switch to generate a closing action.

According to the preferred embodiment of the present invention, the above-mentioned man-machine interface includes a field digital controller and a monitoring host. Wherein, the monitoring host is coupled to the on-site digital controller. When the on-site digital controller finds that the power supply is not input to the traditional battery charging device or when the fuse of the charging circuit is burned, it outputs an abnormal warning signal, so that the monitoring host outputs a warning signal.

According to a preferred embodiment of the present invention, the above device further includes using an ammeter to detect the current value.

Based on the above, the present invention proposes a monitoring circuit for a battery charging device, which is suitable for generators, diesel fire pumps, etc. Since the battery charging device can continuously maintain the rechargeable battery in a state of high voltage and high energy, and can sense the operation status of the fuse, when it is necessary to activate the generator, the situation that the power of the rechargeable battery is insufficient to activate the generator will not occur . In addition, when the generator activates the current and burns the internal fuse, it can send a warning signal in real time. Therefore, the generator can perform as expected, saving time and money loss.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

FIG. 1 is a block diagram of a circuit according to a preferred embodiment of the present invention.

Fig. 2 is the refinement circuit block diagram of Fig. 1 embodiment

Graphical labeling instructions:

102: Traditional battery charging device 104: Monitoring device

106: Generator 108: Battery charging device

202: Power detection circuit 206: Current detection circuit

208: Man-machine interface 210: Second fuse

212: The third fuse 216: The first fuse

220: Fourth fuse 218: Rechargeable battery

222: Internal lock switch 226: On-site digital controller

228: Monitoring host 230: Transformer

232: Bridge rectifier 234: Filter capacitor

236: Zener diode 238: Ammeter

214: relay

Detailed ways

Please refer to FIG. 1 , which shows a circuit block diagram according to a preferred embodiment of the present invention. The battery charging device 108 includes a conventional battery charging device 102 and a monitoring device 104 . Wherein, the conventional battery charging device 102 is coupled to the monitoring device 104 .

When power is input to the conventional battery charging device 102, the rechargeable battery starts to be charged. In order to keep the rechargeable battery in a state of high energy and high voltage at any time, the rechargeable battery must be continuously charged. Therefore, the monitoring device 104 monitors in real time whether power is input to the conventional battery charging device 102 so as to maintain the normal charging operation. If the power is not input to the conventional battery charging device 102, the monitoring device will output a warning signal. When the generator is started, it must be ensured that the rechargeable battery can supply enough energy to drive the generator 106 . Therefore, if the monitoring device finds that the charging circuit of the charging current is disconnected, it will output a warning signal.

Please refer to FIG. 2 together, which shows a detailed circuit block diagram of the embodiment in FIG. 1 . The monitoring device 104 includes a power detection circuit 202 , a current detection circuit 206 and a man-machine interface 208 . Wherein, the power detection circuit 202 includes a relay 214 , a fuse 210 and a fuse 212 . Wherein, the current detection circuit 206 includes a fuse 220 and an internal lock switch 222 . Wherein, the man-machine interface 208 includes a field digital controller 226 and a monitoring host 228 . The conventional battery charging device 102 is electrically coupled to the power detection circuit 202 . Furthermore, the current detection circuit 206 is electrically coupled to the conventional battery charging device 102 . Furthermore, the man-machine interface 208 is electrically coupled to the power detection circuit 202 and the current detection circuit 206 .

In normal operation, power is input into the transformer 230 through the power detection circuit 202 . At this time, since the relay 214 is in an open state, the field digital controller 226 cannot detect any signal. Afterwards, the power is rectified by bridge rectifier 232 . Next, the power is input into a filter capacitor 234 and a Zener diode 236 for filtering and voltage stabilization. After the above process of converting AC power to DC power is completed, the DC power supply charges a rechargeable battery 218 . In addition, the charging loop of the above-mentioned charging operation includes an ammeter 238 and a 30 ampere fuse 216 . Wherein, the ammeter 238 can be used by monitoring personnel to monitor the operation status of the charging device. In addition, because the rechargeable battery 218 will output a strong current when the generator is started, the installation of the fuse 216 can prevent the internal circuit of the device from burning out. In addition, the fuse 216 is connected in parallel with a 0.5A fuse 220. When the charging device is operating normally, most of the current will flow through the fuse 216 because the impedance of the fuse 220 (0.5A) is much higher than that of the fuse 216 (30A). Therefore, the circuit of the fuse 220 has only a small amount of current flowing through it. Furthermore, the fuse 220 is in a connection locking relationship with an internal locking switch 222 . That is, when the fuse 220 operates normally, the internal locking switch 222 remains open, so that the field digital controller 226 cannot detect any signal. Conversely, when the fuse 220 burns out, the internal locking switch 222 is triggered, causing the internal locking switch 222 to generate a closing action and the field digital controller 226 detects a short circuit signal.

In an abnormal situation, assuming that the power company suddenly loses power, the generator must be activated in real time. Firstly, since the power supply disappears, the power detection circuit 202 has no power input. Therefore, the field digital controller 226 detects a short circuit because the relay 214 goes to the short circuit state.

signal. Then, the on-site digital controller 226 sends an abnormal warning signal. Finally, the monitoring host 228 outputs a warning signal to notify the monitoring personnel. On the other hand, when the generator is started, the conventional battery charging device 102 immediately charges the rechargeable battery 218 in a large amount, and the strong current generated by it will flow into the fuse 220 because the circuit is disconnected when the fuse 216 is burned. Afterwards, since the withstand current value of the fuse 220 is only 0.5 ampere, the fuse 220 will burn out. Then, because the fuse 220 is burned out, the internal locking switch 222 is triggered, so that the locking switch 222 generates a closing action and the field digital controller 226 detects a short circuit signal. Finally, the monitoring host 228 outputs a warning signal to notify the monitoring personnel.

Based on the above, the present invention proposes a monitoring circuit for a battery charging device, which is suitable for generators, diesel fire pumps, etc. When the generator needs to be activated, it can ensure that the electric energy of the rechargeable battery is maintained at a state of high voltage and high electric energy. In addition, when the generator is activated and the internal fuse is found to be burned by the charging current of the traditional battery charging device, a warning signal can be sent in real time to notify the monitoring personnel to deal with it, so as to gain time for maintenance. Therefore, generators, diesel fire pumps, etc. can perform as expected, reducing time and money losses caused by power interruptions.

The illustrations and descriptions disclosed above are only a preferred embodiment of the present invention, and are not intended to limit the present invention. Therefore, the protection scope of the present invention shall be determined by the claims.

Claims (19)

1. generator cells charging device monitoring circuit, it is characterized in that this generator cells charging device monitoring circuit comprises: a power supply checking circuit is used to detect power supply and whether imports this battery charger; One conventional batteries charging device, this power supply checking circuit of electric property coupling is used for a rechargeable battery is charged; One current-sensing circuit, this conventional batteries charging device of electric property coupling, whether first fuse that is used to detect in this conventional batteries charging device burns; An and man-machine interface, this power supply checking circuit of electric property coupling and this current-sensing circuit, when this power supply checking circuit finds that this power supply is not imported this battery charger and when this current-sensing circuit found that this first fuse burns the generation of one of above-mentioned two kinds of situations, an alerting was exported in this man-machine interface.

2. generator cells charging device monitoring circuit according to claim 1 is characterized in that: this power supply checking circuit comprises a relay, and whether be used to detect this power supply checking circuit has this power supply input; One second fuse couples this relay, is used to protect this battery charger; And one the 3rd fuse, couple this relay, be used to protect this battery charger; When one of them burns when second fuse and the 3rd fuse, will make this power supply can't import this power supply checking circuit, and make this relay produce closing motion.

3. generator cells charging device monitoring circuit according to claim 2 is characterized in that: the current value of the 3rd fuse is 4 amperes.

4. generator cells charging device monitoring circuit according to claim 2 is characterized in that: the current value of this second fuse is 4 amperes.

5. generator cells charging device monitoring circuit according to claim 1, it is characterized in that: this current-sensing circuit comprises: one the 4th fuse, in parallel with this first fuse; And an internal lock switch, when the 4th fuse burns, trigger this internal lock switch, make this internal lock switch produce closing motion.

6. generator cells charging device monitoring circuit according to claim 1 is characterized in that: this man-machine interface comprises a field digital controller; An and monitoring host computer, couple this field digital controller, when this field digital controller finds that this power supply is not imported this battery charger and when one first fuse burnt the generation of one of above-mentioned two kinds of situations, output one unusual alerting made this monitoring host computer export this alerting.

7. generator cells charging device monitoring circuit according to claim 6, it is characterized in that: this alerting is shown on the display.

8. generator cells charging device monitoring circuit according to claim 1 is characterized in that: this power supply is 120 volts.

9. generator cells charging device monitoring circuit according to claim 1 is characterized in that: comprise a reometer, be used for the detecting current value.

10. generator cells charging device monitoring circuit is characterized in that this generator cells charging device monitoring circuit comprises: a conventional batteries charging device, and import a power supply and a rechargeable battery is charged; An and supervising device, this conventional batteries charging device of electric property coupling, be used to detect whether this conventional batteries charging device imports this power supply and whether sensing opens circuit in order to a charge circuit that this rechargeable battery is carried out charging operations, and do not import this conventional batteries charging device and this charge circuit when this power supply and open circuit one of two kinds of situations when taking place, export an alerting.

11. generator cells charging device monitoring circuit according to claim 10 is characterized in that: this supervising device comprises a power supply checking circuit, is used to detect this power supply and whether exports this battery charger; One current-sensing circuit, this conventional batteries charging device of electric property coupling, whether one first fuse that is used to detect in this conventional batteries charging device burns; An and man-machine interface, this power supply checking circuit of electric property coupling and this current-sensing circuit, when this power supply checking circuit finds that this power supply is not imported this battery charger and when this current-sensing circuit found that this first fuse burns the generation of one of two kinds of situations, this alerting was exported in this man-machine interface.

Whether 12. generator cells charging device monitoring circuit according to claim 11 is characterized in that: this power supply checking circuit comprises a relay, being used to detect this power supply checking circuit has this power supply input; One second fuse couples this relay, is used to protect this battery charger; And one the 3rd fuse, couple this relay, be used to protect this battery charger; When one of them burns when second fuse and the 3rd fuse, will make this power supply can't import this power supply checking circuit, and make this relay produce closing motion.

13. generator cells charging device monitoring circuit according to claim 12 is characterized in that: the current value of the 3rd fuse is 4 amperes.

14. generator cells charging device monitoring circuit according to claim 12 is characterized in that: the current value of this second fuse is 4 amperes.

15. generator cells charging device monitoring circuit according to claim 11 is characterized in that: this current-sensing circuit comprises one the 4th fuse, and is in parallel with this first fuse; And an internal lock switch, couple the 4th fuse, when the 4th fuse burns, trigger this internal lock switch, make the internal lock switch produce closing motion.

16. generator cells charging device monitoring circuit according to claim 11 is characterized in that: this man-machine interface comprises a field digital controller; An and monitoring host computer, couple this field digital controller, when this field digital controller finds that this power supply is not imported this battery charger and when this first fuse burnt the generation of one of two kinds of situations, output one unusual alerting made this monitoring host computer export this alerting.

17. generator cells charging device monitoring circuit according to claim 16, it is characterized in that: this alerting is shown on the display.

18. generator cells charging device monitoring circuit according to claim 11 is characterized in that: this power supply is 120 volts.

19. generator cells charging device monitoring circuit according to claim 11 is characterized in that: comprise a reometer, be used for the detecting current value.

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