Output regulation circuit and charger

Abstract

The present application relates to an output regulation circuit, which is connected to the output end of a charger, and the charger is used to charge a battery. The output regulation circuit includes a battery, a negative electrode circuit, and a double-contact DC contactor. The negative electrode of the battery is electrically connected to the negative electrode of the charger; one end of the negative electrode circuit is connected to the positive electrode 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 is connected to the negative electrode of the charger; the normally open contact is connected to the positive electrode of the battery, and is connected to the output end of the negative electrode circuit. The present application also provides a charger, which includes the output regulation circuit. The output regulation circuit and charger provided in the present application can solve the problem that the charger cannot perform online protection on the battery in the traditional solution.

Description

Technical Field

[0001] The present application relates to the technical field of chargers, and in particular to an output control circuit and a charger. Background Art

[0002] Currently, power systems use batteries as backup power systems for substation operation power, communication power, and uninterruptible power supplies in equipment rooms. Batteries used as backup power sources require regular maintenance, such as activation, charging, discharging, and capacity verification.

[0003] In traditional solutions, the battery pack must be disconnected from the charger and the DC power system bus during the core capacity discharge process to prevent the charger from replenishing power during the core capacity process and interfering with capacity statistics to obtain accurate full core capacity discharge capacity.

[0004] Therefore, in traditional solutions, extreme accidents such as open circuits are prone to occur during the battery capacity increase process. However, the charger is disconnected from the battery at this time, so it is impossible to provide online battery protection, which makes the battery capacity increase and discharge process unsafe. Summary of the Invention

[0005] Based on this, it is necessary to provide an output regulation circuit and a charger to address the problem that traditional chargers cannot provide online protection for batteries.

[0006] An output control circuit is connected to the output terminal of a charger, wherein the charger is used to charge a battery, comprising:

[0007] a battery, wherein the negative electrode of the battery is electrically connected to the negative electrode of the charger;

[0008] A negative electrode circuit, one end of which is connected to the positive electrode of the battery and the other end of which outputs current and voltage;

[0009] A double-contact DC contactor, comprising a normally closed contact and a normally open contact, wherein the normally closed contact is connected to the negative electrode of the charger;

[0010] The normally open contact is connected to the positive electrode of the battery and to the output end of the negative electrode circuit.

[0011] The output control circuit provided in this application includes a battery, a negative circuit, and a dual-contact DC contactor. The normally closed contact is connected to the positive terminal of the battery and to the output terminal of the negative circuit. The normally open contact is connected to the positive terminal of the battery and to the output terminal of the negative circuit. The negative terminal of the battery is electrically connected to the negative terminal of the charger. When the circuit between the charger and the battery is conductive, the battery provides a back electromotive force to the charger, thereby reducing the output voltage of the charger after passing through the battery. When the battery is operating normally, the normally closed contact is closed, and the charger supplies power to the battery normally. When the battery is discharging, the operator can close the normally open contact and simultaneously open the normally closed contact. At this time, the current at the output terminal of the charger passes through the positive terminal of the battery and reaches the output terminal of the negative circuit. When the output voltage of the charger is lower than the voltage of the battery, the charger stops charging the battery, and the charger does not affect the discharge of the battery.

[0012] A charger comprises the charger output adjustment circuit.

[0013] In one embodiment, the dual-contact DC contactor further includes:

[0014] A driving coil is used to drive the normally closed contact to open and the normally open contact to close.

[0015] In one embodiment, the output control circuit further includes:

[0016] The controller is electrically and signal-connected to the driving coil and is used to control the operation of the driving coil.

[0017] In one embodiment, the controller includes:

[0018] Data transmission interface, used to obtain control commands;

[0019] a processor, connected to the data transmission interface signal to control the drive coil according to a control command;

[0020] The power supply circuit is electrically connected to the battery and the processor to supply power to the processor.

[0021] In one embodiment, the processor includes a central processing unit, and the central processing unit is electrically and signal-connected to the data transmission interface.

[0022] In one embodiment, the output control circuit further includes:

[0023] An information collector, one end of which is connected to the battery and the busbar, and the other end of which is electrically and signal-connected to the processor;

[0024] A storage device is electrically and signal-connected to the processor.

[0025] In one embodiment, the information collector includes:

[0026] a voltage signal sampling circuit, electrically and signal-connected to the bus, the battery, and the processor, the voltage signal sampling circuit being used to obtain voltage information of the bus and the battery;

[0027] A current signal sampling circuit is electrically and signal-connected to the bus, the battery, and the processor, and is used to obtain current information of the bus and the battery.

[0028] In one embodiment, the storage device is a memory.

[0029] In one embodiment, the data transmission interface includes:

[0030] Information receiving interface, including network port, for receiving control commands;

[0031] The information sending interface includes an RS232 or RS485 serial communication conversion interface and a CAN communication interface. The information sending interface is used to send adjustment commands to the charger.

[0032] A charger comprises the charger output adjustment circuit as described in any one of the above items. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of a charger output adjustment circuit provided in accordance with an embodiment of the present application.

[0034] Figure 2 A schematic diagram of a charger output adjustment circuit provided in another embodiment of the present application.

[0035] Figure 3 A schematic diagram of the structure of a controller provided for one embodiment of the present application.

[0036] Description of reference numerals:

[0037] Output control circuit 10

[0038] Battery 100

[0039] Negative line 200

[0040] Double contact DC contactor 300

[0041] Normally closed contact 310

[0042] Normally open contact 320

[0043] Drive coil 330

[0044] Controller 400

[0045] Data transmission interface 410

[0046] Information receiving interface 411

[0047] Network port 412

[0048] Information sending interface 413

[0049] Processor 420

[0050] Power supply circuit 430

[0051] Information Collector 500

[0052] Voltage signal sampling circuit 510

[0053] Current signal sampling circuit 520

[0054] Storage device 600 DETAILED DESCRIPTION

[0055] In conventional solutions, battery chargers cannot provide online protection for batteries. Therefore, the present application provides an output regulation circuit and a charger.

[0056] To make the objectives, technical solutions, and advantages of this application more clearly understood, the following examples and accompanying drawings further illustrate the output control circuit and charger of this application. It should be understood that the specific embodiments described herein are only intended to explain this application and are not intended to limit this application.

[0057] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application include direct and indirect connections (couplings) unless otherwise specified. In the description of this application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0058] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0059] See Figure 1 One embodiment of the present application provides an output control circuit 10 connected to the output terminal of a charger for charging a battery. The output control circuit 10 includes a battery 100, a negative electrode line 200, and a double-contact DC contactor 300.

[0060] The negative pole of the battery 100 is electrically connected to the negative pole of the charger. The battery 100 is connected to the busbar. 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. 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, the voltage of the battery 100 should be at least 22V. In one embodiment, the battery 100 is a storage battery, but this application does not specifically limit the type of the battery 100, and it can be selected according to actual needs.

[0061] One end of the negative electrode circuit 200 is connected to the positive electrode of the battery 100, and the other end outputs current and voltage. The negative electrode circuit 200 can be a cable or a wire, as long as it can realize the transmission of electrical signals. The specific selection can be based on actual needs and is not limited in this application.

[0062] The dual-contact DC contactor 300 includes a normally closed contact 310 and a normally open contact 320. The normally closed contact 310 is connected to the negative terminal of the charger. Furthermore, the normally open contact 320 is connected to the positive terminal of the battery 100 and to the output end of the negative line 200. When the battery is supplying power normally, that is, when the charger is supplying power to the battery normally, the normally closed contact 310 is closed and the normally open contact 320 is open. The charger can charge the battery directly without passing through the battery 100, and the output voltage of the charger remains unchanged. During the battery's core discharge, the operator can close the normally open contact 320 and simultaneously open the normally closed contact 310. At this point, the current output from the charger sequentially passes through the battery 100 and the closed normally open contact 320. The current output from the charger is transmitted along the negative line 200, then reaches the connection point between the negative line 200 and the battery, and is then transmitted to the battery. Due to the back electromotive force of the battery 100, the voltage received by the battery is lower than the battery's own voltage, and the battery is no longer charged. Therefore, the staff can discharge the battery to its final capacity without disconnecting the electrical connection between the battery and the charger.

[0063] The output control circuit 10 provided in this embodiment includes the battery 100, the negative electrode circuit 200, and the dual-contact DC contactor 300. The normally closed contact 310 is connected to the positive electrode of the battery 100 and to the output end of the negative electrode circuit 200. The normally open contact 320 is connected to the positive electrode of the battery 100 and to the output end of the negative electrode circuit 200. The negative electrode of the battery 100 is electrically connected to the negative electrode of the charger. When the circuit between the charger and the battery 100 is connected, the battery 100 can provide a back electromotive force to the charger, thereby reducing the output voltage of the charger after passing through the battery. When the battery is operating normally, the normally closed contact 310 is closed, and the charger supplies power to the battery normally. To discharge the battery to its full capacity, the operator can close the normally open contact 320 and simultaneously open the normally closed contact 310. At this time, the output current of the charger passes through the positive electrode of the battery 100 and reaches the output end of the negative electrode circuit 200. When the output voltage of the charger is lower than the voltage of the battery, the charger will no longer charge the battery. At this time, the charger will not affect the core capacity discharge of the battery.

[0064] In one embodiment of the present application, the dual-contact DC contactor 300 further includes a drive coil 330. The drive coil 330 is used to drive the normally closed contact 310 to open and the normally open contact 320 to close. A staff member can use other equipment to drive the drive coil 300 to open the normally closed contact 310 and close the normally open contact 320. The type of drive coil 330 can be selected based on actual needs, as long as it can drive the normally closed contact 310 to open and the normally open contact 320 to close.

[0065] See Figures 1 to 3 In one embodiment of the present application, the output control circuit 10 further includes a controller 400, which is electrically and signal-connected to the drive coil 330 for controlling the operation of the drive coil 330. The controller 400 may be a combination of a central processing unit and a control circuit, or may be a manually controlled control circuit. The specific selection may be based on 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.

[0066] The data transmission interface 410 is used to obtain control commands, wherein the control commands are sent by the terminal. The data transmission interface 410 can be a Bluetooth interface, a 485 communication interface, or other data interface. The specific data transmission interface 410 can be selected according to actual needs and is not limited in this application. As long as it can obtain control commands, it can be used.

[0067] The processor 420 is connected to the data transmission interface 410 by signal so as to control the drive coil 330 according to the control command. The processor 420 can select a central processing unit, a single-chip microcomputer or a digital signal processor, and the specific selection can be made 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 signal-connected to the data transmission interface 410. In one embodiment, the model of the central processing unit can be an ARM7 processor developed by Arm International Technology Company. The processor 420 receives the control command of the terminal through the data transmission interface 410 and controls the operation of the drive coil 330 according to the control command. For example, when the terminal sends a command to discharge the core capacity of the battery, the processor 420 controls the operation of the drive coil 330. At this time, the normally open contact 320 is closed and the normally closed contact 310 is disconnected. The voltage value received by the battery from the charger becomes smaller, so that the battery cannot obtain electrical energy from the charger.

[0068] The power supply circuit 430 is electrically connected to the battery and the processor 420 to provide power to the processor 420. The power supply circuit 430 draws power from the battery's DC positive and negative busbars. The battery's output voltage is 110V, which is transmitted to the processor 420 via the power supply circuit 430. The power supply circuit 430 may be provided with a boost circuit or a buck circuit, the specific selection of which may be based on actual needs and is not limited in this application.

[0069] In one embodiment of the present application, the output control circuit 10 further includes an information collector 500 and a storage device 600 .

[0070] One end of the information collector 500 is connected to the battery and the busbar, and the other end is electrically connected and signal-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 busbar and the battery, and is electrically connected and signal-connected to the processor 420. The voltage signal sampling circuit 510 is used to obtain voltage information of the busbar and the battery. The current signal sampling circuit 520 is electrically connected to the busbar and the battery, and is electrically connected and signal-connected to the processor 420. The current signal sampling circuit 520 is used to obtain current information of the busbar and the battery.

[0071] It should be noted that after receiving the control command to discharge the battery core capacity, the processor 420 needs to analyze the battery and bus voltage and current. If the operating conditions are met, the processor 420 will control the drive coil 330 to operate. The operating conditions are met when the battery and bus voltage and current meet the specified standards. If the battery and bus voltage and current do not meet the specified standards, the processor 420 sends a signal to the terminal via the data transmission interface 410 indicating that the operation cannot continue.

[0072] The storage device 600 is electrically and signal-connected to the processor 420. The storage device 600 can be an external memory, a memory chip, or an internal memory. The specific selection can be based on 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 at least 16M of off-chip memory as data cache space.

[0073] In one embodiment of the present application, the data transmission interface 410 includes an information receiving interface 411 and an information sending interface 413 .

[0074] The information receiving interface 411 includes a network port 412, and the information receiving interface 411 is used to receive control commands. In addition, 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.

[0075] The information transmission interface 413 includes an RS232 or RS485 serial communication conversion interface and a CAN communication interface. The information transmission interface 413 is used to send adjustment commands to the charger. The RS232 or RS485 serial communication conversion interface and the CAN communication module interface are connected to corresponding interfaces of the charger. Data communication between the processor 420 and the charger is achieved by following the data communication interface protocol specified by the charger, thereby achieving charger output control.

[0076] In one embodiment of the present application, a charger is provided, comprising the output control circuit 10. The charger can adjust its output voltage so that when the battery needs to be discharged, the output voltage of the charger is lower than the output voltage of the battery.

[0077] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An output control circuit connected to the output terminal of a charger, the charger is used to charge a battery, characterized in that: include: A battery (100), a negative electrode line (200) and a double-contact DC contactor (300), wherein the double-contact DC contactor (300) comprises a normally closed contact (310) and a normally open contact (320); The negative electrode of the battery (100) and the first end of the normally closed contact (310) are connected to the negative electrode of the charger, the positive electrode of the battery (100) is connected to the first end of the normally open contact (320), the second end of the normally open contact (320) is connected to the second end of the normally closed contact (310) as the negative output end of the output control circuit, and the positive electrode of the charger is the positive output end of the output control circuit; When the storage battery supplies power normally, the normally closed contact (310) is closed, the normally open contact (320) is disconnected, and the charger charges the storage battery; when the storage battery is discharging to its core capacity, the normally open contact (320) is closed, the normally closed contact (310) is disconnected, and the current output from the charger passes through the battery (100) and the normally open contact (320) that has been closed. When the voltage received by the storage battery is lower than the voltage of the storage battery itself, the storage battery stops charging.

2. The output control circuit according to claim 1, characterized in that: The double-contact DC contactor (300) further comprises: A driving coil (330) is used to drive the normally closed contact (310) to open, and to drive the normally open contact (320) to close.

3. The output control circuit according to claim 2, characterized in that: Also includes: A controller (400) is electrically and signal-connected to the drive coil (330) and is used to control the operation of the drive coil (330).

4. The output control circuit according to claim 3, characterized in that: The controller (400) comprises: A data transmission interface (410), used to obtain control commands; A processor (420) connected to the data transmission interface (410) by signal so as to control the driving coil (330) according to a control command; A power supply circuit (430) is electrically connected to the battery and the processor (420) to supply power to the processor (420).

5. The output control circuit according to claim 4, characterized in that: The processor (420) comprises a central processing unit, and the central processing unit is electrically connected and signal-connected to the data transmission interface (410).

6. The output control circuit according to claim 4, characterized in that: Also includes: An information collector (500), one end of which is connected to the battery and the bus bar, and the other end of which is electrically and signal-connected to the processor (420); The storage device (600) is electrically and signal-connected to the processor (420).

7. The output control circuit according to claim 6, characterized in that: The information collector (500) comprises: A voltage signal sampling circuit (510) is electrically and signal-connected to the busbar, the storage battery, and the processor (420), and the voltage signal sampling circuit (510) is used to obtain voltage information of the busbar and the storage battery; A current signal sampling circuit (520) is electrically and signal-connected to the busbar, the storage battery, and the processor (420), and the current signal sampling circuit (520) is used to obtain current information of the busbar and the storage battery.

8. The output control circuit according to claim 6, characterized in that: The storage device (600) is a memory.

9. The output control circuit according to claim 4, characterized in that: The data transmission interface (410) comprises: An information receiving interface (411), including a network port (412), for receiving control commands; The information sending interface (413) includes an RS232 or RS485 serial communication conversion interface and a CAN communication interface, and the information sending interface (413) is used to send an adjustment command to the charger.

10. A charger, characterized in that: Comprising the output control circuit as described in any one of claims 1-9.

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