CN209844625U - Output regulation and control circuit and charger - Google Patents

Abstract

The application relates to an output regulation circuit, which is connected with the output end of a charger, and the charger is used for charging a storage battery. The output regulation circuit includes a battery, a negative line, and a double-contact DC contactor. The negative pole of the battery is electrically connected to the negative pole of the charger; one end of the negative line is connected to the positive pole of the battery, and the other end outputs current and voltage; the double-contact DC contactor includes a normally closed contact and a normally open contact, and the normally closed contact The point is connected with the negative pole of the charger; the normally open contact is connected with the positive pole of the battery, and is connected with the output terminal of the negative pole line. The present application also provides a charger, which includes the output regulation circuit. The output regulation circuit and the charger provided by the present application can solve the problem that the charger cannot perform online protection for the storage battery in the traditional solution.

Description

Output regulation circuit and charger

technical field

The present application relates to the technical field of chargers, in particular to an output regulation circuit and a charger.

Background technique

At present, batteries are widely used as backup power systems in power system substation operating power supplies, communication power supplies, and machine room uninterruptible power supplies. As a backup power supply, the battery needs regular maintenance such as activation, charge and discharge, and nuclear capacity.

In the traditional solution, the battery pack should be separated from the charger and the busbar of the DC power system during the nuclear capacity discharge process to prevent the charger from replenishing power during the nuclear capacity process and interfere with capacity statistics, so as to obtain accurate full nuclear capacity discharge capacity.

Therefore, in the traditional scheme, extreme accidents such as open circuit are prone to occur during the battery nuclear capacity process. But at this time, the charger has been separated from the battery, so the online protection of the battery cannot be performed, which causes the problem that the battery core capacity discharge process is unsafe.

Utility model content

Based on this, it is necessary to provide an output regulation circuit and a charger for the problem that the charger in the traditional solution cannot provide online protection for the storage battery.

An output regulating circuit, connected to the output end of a charger, the charger is used for charging the storage battery, comprising:

A battery, the negative pole of the battery is electrically connected to the negative pole of the charger;

Negative electrode line, one end is connected to the positive electrode of the battery, and the other end outputs current and voltage;

A double-contact DC contactor, including a normally closed contact and a normally open contact, and the normally closed contact is connected to the negative pole of the charger;

The normally open contact is connected with the positive pole of the battery and with the output terminal of the negative pole circuit.

The output regulating circuit provided in this application includes a battery, a negative line and a double-contact DC contactor. The normally closed contact is connected with the positive pole of the battery and with the output terminal of the negative pole circuit. The normally open contact is connected with the positive pole of the battery and with the output terminal of the negative pole circuit. The negative pole of the battery is electrically connected to the negative pole of the charger. When the circuit between the charger and the battery is turned on, the battery can provide a counter electromotive force for the charger, so that the output voltage of the charger after passing through the battery will be reduce. In the normal working state of the battery, the normally closed contact is in a closed state, and the charger supplies power to the battery normally. When the storage battery core capacity is discharged, the staff can close the normally open contact and disconnect the normally closed contact at the same time. At this time, the current at the output terminal of the charger passes through the positive pole of the battery and reaches the output terminal of the negative pole circuit. When the output voltage of the charger is lower than the voltage of the battery, the charger no longer charges the battery, and the charger does not affect the discharge of the battery's nuclear capacity at this time.

A charger, comprising the charger output adjustment circuit.

In one of the embodiments, the double-contact DC contactor also includes:

A driving coil, the driving coil is used to drive the normally closed contact to open and to drive the normally open contact to close.

In one of the embodiments, the output regulation circuit also includes:

The controller is electrically and signally connected with the driving coil, and is used to control the driving coil to work.

In one of the embodiments, the controller includes:

Data transmission interface for obtaining control commands;

a processor, signal-connected to the data transmission interface, to control the driving coil according to a control command;

The power supply circuit is electrically connected with the storage battery and the processor to provide power for the processor.

In one of the embodiments, the processor includes a central processing unit, and the central processing unit is electrically and signally connected to the data transmission interface.

In one of the embodiments, the output regulation circuit also includes:

An information collector, one end of which is connected to the battery and the busbar, and the other end is electrically and signally connected to the processor;

A storage device is electrically and signally connected to the processor.

In one of the embodiments, the information collector includes:

A voltage signal sampling circuit is electrically and signally connected to the bus bar, the storage battery, and the processor, and the voltage signal sampling circuit is used to obtain voltage information of the bus bar and the storage battery;

A current signal sampling circuit is electrically and signally connected to the bus bar, the storage battery and the processor, and the current signal sampling circuit is used to acquire current information of the bus bar and the storage battery.

In one of the embodiments, the storage device is a memory.

In one of the embodiments, the data transmission interface includes:

Information receiving interface, including network port, used to receive control commands;

The information sending interface includes an RS232 or RS485 serial communication conversion interface, and also includes a CAN communication interface, and the information sending interface is used to send an adjustment command to the charger.

A charger, comprising the charger output adjustment circuit described in any one of the above items.

Description of drawings

FIG. 1 is a schematic diagram of an output adjustment circuit of a charger provided by an embodiment of the present application.

FIG. 2 is a schematic diagram of a charger output adjustment circuit provided by another embodiment of the present application.

Fig. 3 is a schematic structural diagram of a controller provided by an embodiment of the present application.

Explanation of reference signs:

Output regulation circuit 10

battery 100

Negative line 200

Double Contact DC Contactor 300

Normally closed contact 310

Normally open contact 320

Drive coil 330

Controller 400

Data transmission interface 410

Information receiving interface 411

Network port 412

Information sending interface 413

Processor 420

Power supply circuit 430

Information Collector 500

Voltage signal sampling circuit 510

Current signal sampling circuit 520

storage device 600

Detailed ways

The battery charger in the traditional solution cannot protect the battery online. Based on this, the present application provides an output regulation circuit and a charger.

In order to make the purpose, technical solution and advantages of the present application clearer, the output regulation circuit and charger of the present application will be further described in detail through the following embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

The serial numbers assigned to components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in this application all include direct and indirect connection (connection) unless otherwise specified. In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description , rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the application.

In the present application, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

Referring to FIG. 1 , an embodiment of the present application provides an output regulation circuit 10 connected to an output end of a charger used for charging a storage battery. The output regulating circuit 10 includes a battery 100 , a negative line 200 and a double-contact DC contactor 300 .

The negative pole of the battery 100 is electrically connected to the negative pole of the charger. The battery 100 is connected to the bus bar. The specifications of the battery 100 can be selected according to the specifications of the charger. In one embodiment, the rated voltage of the charger is 102V-124V, and the voltage of the battery 100 increases with the increase of the rated voltage of the charger. And increase. The battery 100 should reduce the output voltage of the charger to at most 102V. For example, when the rated voltage of the charger is 111V, the voltage of the battery 100 should be at least 9V. When the rated voltage of the charger is 124V, when the rated voltage of the charger is 124V, the voltage of the battery 100 should be at least 22V. In one embodiment, the battery 100 is an accumulator, but this application does not specifically limit the type of the battery 100, which can be selected according to actual needs.

One end of the negative electrode line 200 is connected to the positive electrode of the battery 100 , and the other end outputs current and voltage. The negative line 200 can be a cable or a wire, as long as it can realize the transmission of electrical signals, which can be selected according to actual needs, and is not limited in this application.

The double-contact DC contactor 300 includes a normally closed contact 310 and a normally open contact 320, and the normally closed contact 310 is connected to the negative pole of the charger. Moreover, the normally open contact 320 is connected to the positive pole of the battery 100 and is connected to the output end of the negative pole line 200 . When the battery supplies power normally, that is, the charger supplies power to the battery normally, the normally closed contact 310 is closed, and the normally open contact 320 is opened. The charger can directly charge the storage battery without passing through the battery 100, and the output voltage of the charger will not change. During the discharge of the storage battery, the staff can close the normally open contact 320 and disconnect the normally closed contact 310 at the same time. At this time, the current output from the charger passes through the battery 100 and the closed normally open contact 320 in sequence. The current output from the charger is transmitted on the negative line 200 , and then reaches the connection point between the negative line 200 and the storage battery, and is transmitted to the storage battery. Due to the back electromotive force of the battery 100, the voltage received by the battery at this time is lower than the voltage of the battery itself, and the battery is no longer charged. Therefore, the staff can perform nuclear capacity discharge operation on the storage battery without disconnecting the electrical connection between the storage battery and the charger.

The output regulating circuit 10 provided in this embodiment includes the battery 100 , the negative line 200 and the double-contact DC contactor 300 . The normally closed contact 310 is connected to the positive pole of the battery 100 and to the output terminal of the negative pole line 200 . The normally open contact 320 is connected to the positive pole of the battery 100 and to the output terminal of the negative pole line 200 . The negative pole of the battery 100 is electrically connected to the negative pole of the charger. When the circuit between the charger and the battery 100 is turned on, the battery 100 can provide a counter electromotive force for the charger, so that the charger passes through the battery. output voltage will decrease. In the normal working state of the battery, the normally closed contact 310 is in a closed state, and the charger supplies power to the battery normally. When the battery core capacity is discharged, the staff can close the normally open contact 320 and disconnect the normally closed contact 310 at the same time. At this time, the current at the output end of the charger passes through the positive pole of the battery 100 and reaches the output end of the negative pole line 200 . When the output voltage of the charger is lower than the voltage of the battery, the charger no longer charges the battery, and the charger does not affect the discharge of the battery's nuclear capacity at this time.

In an embodiment of the present application, the double-contact DC contactor 300 further includes a driving coil 330 . The driving coil 330 is used to drive the normally closed contact 310 to open, and to drive the normally open contact 320 to close. The staff can use other devices to drive the driving coil 300 so as to open the normally closed contact 310 and close the normally open contact 320 at the same time. The type of the driving coil 330 can be selected according to actual needs, as long as it can drive the normally closed contact 310 to open and close the normally open contact 320 .

Please refer to FIG. 1 to FIG. 3 , in one embodiment of the present application, the output regulation circuit 10 further includes a controller 400, the controller 400 is electrically and signally connected to the driving coil 330, and is used to control the The drive coil 330 works. The controller 400 can be a combination of a central processing unit and a control circuit, or can be a manually controlled control circuit, which can be selected according to actual needs, and is not limited in this application. In one embodiment, the controller 400 includes a data transmission interface 410 , a processor 420 and a power supply circuit 430 .

The data transmission interface 410 is used to obtain a control command, where the control command is sent by the terminal. The data transmission interface 410 may be a Bluetooth interface, or a 485 communication interface, or other data interfaces. The data transmission interface 410 can be specifically selected according to actual needs, which is not limited in this application, as long as it can obtain control commands.

The processor 420 is signal-connected with the data transmission interface 410 to control the driving coil 330 according to a control command. The processor 420 can be a central processing unit, a single-chip microcomputer or a digital signal processor, which can be selected according to actual needs, which is not limited in this application. In one embodiment, the processor 420 includes a central processing unit, and the central processing unit is electrically and signally connected to the data transmission interface 410 . In one embodiment, the model of the central processor may be an ARM7 processor developed by ARM International Technology Company. The processor 420 receives a terminal control command through the data transmission interface 410, and controls the driving coil 330 to work according to the control command. For example, when the terminal sends a command to discharge the battery core capacity, the processor 420 controls the driving coil 330 to work. At this time, the normally open contact 320 is closed, and the normally closed contact 310 is opened. The voltage value received by the battery from the charger becomes so small that the battery cannot obtain power from the charger.

The power supply circuit 430 is electrically connected with the battery and the processor 420 to provide power for the processor 420 . The power supply circuit 430 takes power from the DC positive and negative bus bars of the battery, and the output voltage of the battery is 110V, which is transmitted to the processor 420 through the power supply circuit 430 . The power supply circuit 430 may be provided with a boost circuit or a step-down circuit, which may be selected according to actual needs, which is not limited in this application.

In an embodiment of the present application, the output regulation circuit 10 further includes an information collector 500 and a storage device 600 .

One end of the information collector 500 is connected to a battery and a bus, and the other end is electrically and signally connected to the processor 420 . In one embodiment, the information collector 500 includes a voltage signal sampling circuit 510 and a current signal sampling circuit 520 . The voltage signal sampling circuit 510 is electrically connected to the bus bar and the storage battery, and is electrically connected and signally connected to the processor 420 . The voltage signal sampling circuit 510 is used to acquire the voltage information of the bus bar and the storage battery. The current signal sampling circuit 520 is electrically connected to the bus bar and the storage battery, and is electrically connected and signally connected to the processor 420 . The current signal sampling circuit 520 is used to acquire the current information of the bus bar and the storage battery.

It should be noted that after the processor 420 receives the control command to discharge the battery core capacity, it needs to analyze the voltage and current of the battery and the busbar, and if the operating conditions are met, the processor 420 will control the driving coil 330 Work. The satisfaction of the operating conditions means that the voltage and current of the storage battery and the busbar meet the specified standards. If the voltage and current of the storage battery and the busbar do not reach the specified standard, the processor 420 sends a signal to the terminal through the data transmission interface 410 that the operation cannot continue.

The storage device 600 is electrically and signally connected to the processor 420 . The storage device 600 can be an external memory, a memory chip, or a built-in memory, which can be selected according to actual needs, and is not limited in this application. In one embodiment, the storage device 600 is a memory. In one embodiment, the storage device 600 uses an off-chip memory of at least 16M as a data cache space.

In an embodiment of the present application, the data transmission interface 410 includes an information receiving interface 411 and an information sending interface 413 .

The information receiving interface 411 includes a network port 412, and the information receiving interface 411 is used for receiving control commands. Besides, the information receiving interface 411 also includes a wireless communication module. In one embodiment, the network port 412 is a network card and an Ethernet port.

The information sending interface 413 includes an RS232 or RS485 serial communication conversion interface, and also includes a CAN communication interface. The information sending interface 413 is used for sending adjustment commands to the charger. The RS232 or RS485 serial communication conversion interface and the CAN communication module interface are connected to the corresponding interface of the charger, and the data communication between the processor 420 and the charger is realized by following the data communication interface protocol specified by the charger, To achieve the purpose of charger output control.

In one embodiment of the present application, the present application also provides a charger, which includes the above-mentioned output regulation circuit 10 . The charger can adjust the output voltage by itself, so that the output voltage of the charger is lower than the output voltage of the battery when the battery needs to be discharged.

The various technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims (10)

1. The utility model provides an output regulation and control circuit, is connected with the output that charges the machine, the machine that charges is used for charging for the battery, its characterized in that includes:

the negative pole of the battery (100) is electrically connected with the negative pole of the charger;

a negative electrode line (200) having one end connected to the positive electrode of the battery (100) and the other end outputting current and voltage;

the double-contact direct current contactor (300) comprises a normally closed contact (310) and a normally open contact (320), wherein the normally closed contact (310) is connected with the negative electrode of a charger; and the number of the first and second electrodes,

the normally open contact (320) is connected with the positive electrode of the battery (100) and connected with the output end of the negative electrode circuit (200).

2. The output regulation circuit of claim 1 wherein the dual-contact dc contactor (300) further comprises:

a drive coil (330), the drive coil (330) being used for driving the normally closed contact (310) to be opened and driving the normally open contact (320) to be closed.

3. The output regulation circuit of claim 2 further comprising:

and the controller (400) is electrically connected and in signal connection with the driving coil (330) and is used for controlling the operation of the driving coil (330).

4. The output regulation circuit of claim 3, wherein the controller (400) comprises:

a data transmission interface (410) for obtaining a control command;

a processor (420) in signal connection with the data transmission interface (410) to control the drive coil (330) in accordance with a control command;

a power supply circuit (430) electrically connected to the battery and the processor (420) to supply power to the processor (420).

5. The output regulation circuit of claim 4 wherein the processor (420) comprises a central processing unit electrically and signal connected to the data transmission interface (410).

6. The output regulation circuit of claim 4 further comprising:

one end of the information collector (500) is connected with the storage battery and the bus, and the other end of the information collector is electrically connected with the processor (420) and is in signal connection with the processor;

a memory device (600) electrically and signally connected to the processor (420).

7. The output regulation circuit of claim 6, wherein the information collector (500) comprises:

the voltage signal sampling circuit (510) is electrically connected and in signal connection with the bus, the storage battery and the processor (420), and the voltage signal sampling circuit (510) is used for acquiring voltage information of the bus and the storage battery;

and the current signal sampling circuit (520) is electrically connected and in signal connection with the bus, the storage battery and the processor (420), and the current signal sampling circuit (520) is used for acquiring current information of the bus and the storage battery.

8. The output regulation circuit of claim 6 wherein the storage device (600) is a memory.

9. The output regulation circuit of claim 4 wherein the data transmission interface (410) comprises:

an information receiving interface (411) comprising a network port (412) for receiving a control command;

the information sending interface (413) comprises an RS232 or RS485 serial communication conversion interface and a CAN communication interface, and the information sending interface (413) is used for sending an adjusting command to the charger.

10. A charger characterized in that it comprises an output regulation circuit according to any one of claims 1 to 9.