CN211089210U - Controllable charging and discharging switching circuit and power distribution terminal thereof - Google Patents
Controllable charging and discharging switching circuit and power distribution terminal thereof Download PDFInfo
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- CN211089210U CN211089210U CN201922323052.3U CN201922323052U CN211089210U CN 211089210 U CN211089210 U CN 211089210U CN 201922323052 U CN201922323052 U CN 201922323052U CN 211089210 U CN211089210 U CN 211089210U
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Abstract
The utility model provides a controllable charge-discharge switching circuit and distribution terminal thereof, including charging unit, discharge unit, diode D1, switch K1, battery and load, the first output of feed end is connected with the load after the rectifier circuit rectification, and the feed end second output is connected with charging unit, charging unit and discharge unit parallel connection are in on the positive and negative pole of battery, the positive pole and the switch K1 one end of battery are connected, the switch K1 other end is connected with the load positive pole, diode D1 parallel connection is at switch K1 both ends, the negative pole of battery is connected with the negative pole of load. The utility model discloses a set up the unit of charging and the unit of discharging, can realize the nimble control to battery charge-discharge to according to the information that data acquisition module gathered, the actual performance of real time monitoring battery avoids taking place the battery life as far as possible, the condition of unable use.
Description
Technical Field
The utility model relates to a battery charge-discharge field particularly, relates to a controllable charge-discharge switching circuit and distribution terminal thereof.
Background
With the development of science and technology, the informatization degree and the automation degree are continuously improved, and higher requirements are put forward on the reliability and the stability of a power supply system in industries such as electric power, communication, finance, chemical engineering, traffic and the like. The valve-controlled sealed lead-acid accumulator is widely used as backup battery because of its excellent characteristics, and it is the final guarantee of power supply.
The service life of a lead-acid storage battery in the existing stock DTU (distribution network automation terminal) is unsatisfactory, the technical specification requirement of not less than 3 years is not met, the actual service life is about 1 to 2 years, and even in some cases, the service life of the battery is not more than 1 year. In this case, not only the use cost of the DTU (including the battery) is increased, but also the operation and maintenance workload is increased. More importantly, the battery is in a floating charge state at ordinary times, the actual performance level of the battery is low, and the residual service life is short; in extreme cases, the battery life is found to be exhausted only when the alternating current is lost, and the battery cannot be used. This causes much inconvenience to the actual operation and maintenance work.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a controllable charge-discharge switching circuit and distribution terminal thereof has solved among the prior art battery and has been in at ordinary times and float the state of charging, the problem that the actual performance level of battery is low, remaining life is short.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a controllable charge-discharge switching circuit, includes charging unit, discharge unit, diode D1, switch K1, battery and load, and the first output of feed end is connected with the load after the rectifier circuit rectification, and the feed end second output is connected with charging unit, charging unit and discharge unit parallel connection are in on the positive and negative pole of battery, the positive pole and the switch K1 one end of battery are connected, the switch K1 other end is connected with the load positive pole, diode D1 parallel connection is at switch K1 both ends, the negative pole of battery is connected with the negative pole of load.
As a preferred scheme, the charging unit comprises a rectifying circuit, a filter circuit, a voltage reduction circuit, a controller, an MOS (metal oxide semiconductor) tube and a data acquisition module, wherein a second output end of the power supply end is sequentially connected with the rectifying circuit, the filter circuit and the voltage reduction circuit, the MOS tube is connected to the high-voltage side of the voltage reduction circuit in series, the low-voltage side of the voltage reduction circuit is connected with the storage battery, the controller is connected with the storage battery through the data acquisition module, and the output end of the controller is connected with the grid electrode of the MOS tube.
Preferably, the discharge unit comprises a controller, an MOS (metal oxide semiconductor) tube, a data acquisition module and a discharge resistor, the anode of the storage battery is connected with the drain electrode of the MOS tube, the discharge resistor R1 is connected between the source electrode of the MOS tube and the cathode of the storage battery in series, the grid electrode of the MOS tube is connected with the controller, and the other end of the controller is connected with the storage battery through the data acquisition module.
Preferably, the MOS transistor is an NMOS transistor.
Preferably, the controller is STM8S103F 3.
A power distribution terminal comprises the controllable charging and discharging switching circuit.
Compared with the prior art, the beneficial effects of the utility model include: by arranging the charging unit and the discharging unit, the charging and discharging of the storage battery can be flexibly controlled, the actual performance of the battery is monitored in real time according to the information acquired by the data acquisition module, and the condition that the battery is used up and cannot be used is avoided; the diode and the switch are arranged in the circuit, so that the one-way charging of the storage battery is realized, and the floating charging phenomenon is avoided.
Drawings
The disclosure of the present invention is explained with reference to the drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. In the drawings, like reference numerals are used to refer to like parts. Wherein:
fig. 1 is a schematic diagram of a controllable charging and discharging switching circuit according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a charging unit according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a discharge unit according to an embodiment of the present invention.
Detailed Description
It is easily understood that, according to the technical solution of the present invention, a plurality of alternative structural modes and implementation modes can be proposed by those skilled in the art without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present invention, and should not be considered as limiting or restricting the technical solutions of the present invention in their entirety or in any other way.
An embodiment according to the present invention is shown in conjunction with fig. 1. A controllable charging and discharging switching circuit comprises a charging unit, a discharging unit, a diode D1, a switch K1, a storage battery and a load, wherein a first output end of a power supply end is connected with a rectifying circuit, and after alternating current is converted into direct current, the direct current is connected with the load to charge the load.
The second output end of the power supply end is connected with the charging unit, the charging unit and the discharging unit are connected to the positive pole and the negative pole of the storage battery in parallel, the positive pole of the storage battery is connected with one end of a switch K1, the other end of the switch K1 is connected with the positive pole of a load, a diode D1 is connected to the two ends of a switch K1 in parallel, the positive pole and the negative pole of a diode D1 are respectively connected with the positive pole of the storage battery and the positive pole of the load, and the negative pole of the storage battery is.
When switch K1 disconnection, owing to receive diode D1's hindrance, the electric current that comes out from the first output of feed end can't reach the battery, can avoid causing the battery to be in the float state of charging, and when the break down of feed end, the battery can be to the load power supply. When necessary, the switch K1 can be closed, and the first output end of the power supply end charges the storage battery.
As shown in fig. 2, the charging unit comprises a rectifying circuit, a filter circuit, a voltage reduction circuit, a controller, an MOS transistor Q1 and a data acquisition module, wherein the second output end of the power supply end is sequentially connected with the rectifying circuit, the filter circuit and the voltage reduction circuit, the alternating current is sequentially rectified, filtered and reduced in voltage and converted into smooth direct current, the MOS transistor Q1 is connected to the high-voltage side of the voltage reduction circuit in series, and the low-voltage side of the voltage reduction circuit is connected with the storage battery.
Specifically, the MOS transistor Q1 is an NMOS transistor, the drain of the MOS transistor Q1 is connected to the b-terminal of the voltage-dropping circuit, the source of the MOS transistor Q1 is connected to the input terminal of the filter circuit, and the gate of the MOS transistor Q1 is connected to the output terminal of the controller.
In this embodiment, the controller passes through data acquisition module and is connected with the battery, data acquisition module is a series of sensing equipment, can the perception battery voltage, the electric current, the temperature, gas release, deformation, the environment humiture, and the power loses the electricity, information such as battery fault state, the information transmission to the controller that data acquisition module will gather, the controller model is STM8S103F3 chip, the controller passes through the analysis and judges, apply high-low level to the MOS pipe, make the MOS pipe break-make, thereby realize the charge control to the battery. For example, when the data acquisition module detects that the charging voltage of the storage battery is too high and exceeds a set threshold, the controller applies a low level to the MOS transistor to cut off the MOS transistor and disconnect charging.
As shown in fig. 3, the discharging unit includes a controller, a MOS transistor Q2, a data acquisition module, and a discharging resistor, the positive electrode of the battery is connected to the drain of the MOS transistor Q2, the discharging resistor R1 is connected in series between the source of the MOS transistor Q2 and the negative electrode of the battery, the gate of the MOS transistor Q2 is connected to the controller, and the other end of the controller is connected to the battery through the data acquisition module. Similarly, the data acquisition module transmits acquired information to the controller, and the controller applies high and low levels to the MOS transistor Q2 through analysis and judgment, so that the MOS transistor Q2 is switched on and off, and the discharge control of the storage battery is realized.
The embodiment of the utility model provides a distribution terminal of controllable charge-discharge switching circuit including above-mentioned structure is still provided.
It should be understood that the data acquisition module acquires information, and the controller receives the information and controls the MOS transistor belong to common knowledge in the art, and the working principle thereof is not described herein again.
The technical scope of the present invention is not limited to the content in the above description, and those skilled in the art can make various modifications and alterations to the above embodiments without departing from the technical spirit of the present invention, and these modifications and alterations should fall within the protection scope of the present invention.
Claims (6)
1. The utility model provides a controllable charge-discharge switching circuit, its characterized in that, includes charging unit, discharge unit, diode D1, switch K1, battery and load, and the first output of feed end is connected with the load after rectifier circuit rectification, and the feed end second output is connected with charging unit, charging unit and discharge unit parallel connection are in on the positive and negative pole of battery, the positive pole and the switch K1 one end of battery are connected, the switch K1 other end is connected with the load anodal, diode D1 parallel connection is at switch K1 both ends, the negative pole of battery is connected with the negative pole of load.
2. The controllable charging and discharging switching circuit according to claim 1, wherein the charging unit comprises a rectifying circuit, a filtering circuit, a voltage-reducing circuit, a controller, a MOS tube Q1 and a data acquisition module, the second output end of the power supply end is connected with the rectifying circuit, the filtering circuit and the voltage-reducing circuit in sequence, the MOS tube Q1 is connected to the high-voltage side of the voltage-reducing circuit in series, the low-voltage side of the voltage-reducing circuit is connected with the storage battery, the controller is connected with the storage battery through the data acquisition module, and the output end of the controller is connected with the grid electrode of the MOS tube Q1.
3. The controllable charging and discharging switching circuit according to claim 1, wherein the discharging unit comprises a controller, a MOS transistor Q2, a data acquisition module and a discharging resistor, the anode of the storage battery is connected with the drain of the MOS transistor Q2, the discharging resistor R1 is connected in series between the source of the MOS transistor Q2 and the cathode of the storage battery, the grid of the MOS transistor Q2 is connected with the controller, and the other end of the controller is connected with the storage battery through the data acquisition module.
4. The controllable charge-discharge switching circuit according to claim 2 or 3, wherein said MOS transistor is an NMOS transistor.
5. A controllable charge-discharge switching circuit according to claim 2 or 3, wherein said controller model is STM8S103F 3.
6. A power distribution terminal comprising a controllable charge-discharge switching circuit according to any of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922323052.3U CN211089210U (en) | 2019-12-23 | 2019-12-23 | Controllable charging and discharging switching circuit and power distribution terminal thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922323052.3U CN211089210U (en) | 2019-12-23 | 2019-12-23 | Controllable charging and discharging switching circuit and power distribution terminal thereof |
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| CN211089210U true CN211089210U (en) | 2020-07-24 |
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| CN201922323052.3U Active CN211089210U (en) | 2019-12-23 | 2019-12-23 | Controllable charging and discharging switching circuit and power distribution terminal thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112087017A (en) * | 2020-07-27 | 2020-12-15 | 国网综合能源服务集团有限公司 | Transformer substation direct-current power supply battery management system and battery management method thereof |
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2019
- 2019-12-23 CN CN201922323052.3U patent/CN211089210U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112087017A (en) * | 2020-07-27 | 2020-12-15 | 国网综合能源服务集团有限公司 | Transformer substation direct-current power supply battery management system and battery management method thereof |
| CN112087017B (en) * | 2020-07-27 | 2024-04-02 | 国网综合能源服务集团有限公司 | Battery management system and battery management method for direct-current power supply of transformer substation |
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