CN215009725U - Novel distributed direct-current power supply device - Google Patents
Novel distributed direct-current power supply device Download PDFInfo
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- CN215009725U CN215009725U CN202120900530.7U CN202120900530U CN215009725U CN 215009725 U CN215009725 U CN 215009725U CN 202120900530 U CN202120900530 U CN 202120900530U CN 215009725 U CN215009725 U CN 215009725U
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Abstract
The utility model discloses a novel distributed DC power supply device, which comprises a storage battery, an AC/DC conversion unit, a bypass DC/DC conversion unit, a DC/DC boost conversion unit and a CPU management unit; the input end of the AC/DC conversion unit is connected with an external power supply, the input end of the AC/DC conversion unit is rectified and then is provided with a bypass output end which is connected with the input end of the bypass DC/DC conversion unit, the output end of the AC/DC conversion unit is connected with the input end of the DC/DC boost conversion unit, and the AC/DC conversion unit outputs direct-current low voltage for the CPU management unit to work and the storage battery to charge; the output end of the DC/DC boost conversion unit outputs direct current for supplying the frequent load of the system, and the output filter of the DC/DC boost conversion unit is connected with the output end of the bypass DC/DC conversion unit by a bypass input end; the CPU management unit is respectively connected with the AC/DC conversion unit, the DC/DC boost conversion unit and the storage battery. When alternating current input exists, the efficiency can be improved, and the reliability of load power supply can be improved.
Description
Technical Field
The utility model relates to a novel distributed DC power supply device.
Background
The distributed power operation power supply refers to a direct current power supply device which converts an alternating current input into a direct current voltage and outputs the direct current voltage to be 110V or 220V, as shown in fig. 1, the inventor has developed a distributed direct current power supply device, chinese invention patent No. 02112814.6, which includes a storage battery 10, an AC/DC conversion unit 20, a DC/DC boost conversion unit 30 and a CPU management unit 40.
The working principle is as follows: when there is an AC input, the AC input is stepped down by the AC/DC conversion unit 20 to charge the battery 10, and the stepped-down voltage is converted into a 110V or 220V DC power required by the load by the DC/DC step-up conversion unit 30 to supply power to the load. When there is no AC input, the AC/DC conversion unit 20 stops operating, and the battery 10 is converted into 110V or 220V DC power required by the load through the DC/DC boost conversion unit 30 to supply power to the load. The CPU management unit 40 is responsible for monitoring the operating states and parameters of the AC/DC conversion unit 20, the DC/DC boost conversion unit 30, and the storage battery 10.
The existing defects are that: when alternating current is input, the alternating current input needs to be firstly reduced in voltage by the AC/DC conversion unit 20 and then boosted by the DC/DC boosting conversion unit 30, and then is output to supply power to the load, so that the reliability and the efficiency are low, and as long as one conversion unit fails, the energy input by the alternating current cannot be converted into direct current to be output to supply power to the load.
Therefore, the inventor further researches and develops and designs a novel distributed direct-current power supply device, and adds a bypass DC/DC conversion unit on the basis of the original device so as to improve the efficiency and the reliability of load power supply.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, an object of the present invention is to provide a novel distributed dc power supply device, which can improve the efficiency and the reliability of the load power supply when ac input is performed.
In order to achieve the above purpose, the solution of the present invention is:
a novel distributed direct-current power supply device comprises a storage battery, an AC/DC conversion unit, a bypass DC/DC conversion unit, a DC/DC boost conversion unit and a CPU management unit; the input end of the AC/DC conversion unit is connected with an external power supply, the input end of the AC/DC conversion unit is rectified and then is provided with a bypass output end which is connected with the input end of the bypass DC/DC conversion unit, the output end of the AC/DC conversion unit is connected with the input end of the DC/DC boost conversion unit, and the AC/DC conversion unit outputs direct-current low voltage for the CPU management unit to work and the storage battery to charge; the output end of the DC/DC boost conversion unit outputs direct current for supplying the frequent load of the system, and the output filter of the DC/DC boost conversion unit is connected with the output end of the bypass DC/DC conversion unit by a bypass input end; the CPU management unit is respectively connected with the AC/DC conversion unit, the DC/DC boost conversion unit and the storage battery.
The AC/DC conversion unit is composed of an input EMC circuit, an input rectifying circuit, an input filter circuit, a high-frequency inverter circuit, an output rectifying circuit and an output filter circuit which are connected in series, and the output end of the input rectifying circuit is connected with the input end of the bypass DC/DC conversion unit in parallel.
The DC/DC boost conversion unit consists of an input filter circuit, a high-frequency inverter circuit, an output rectification circuit and an output filter circuit which are connected in series, wherein the input end of the output filter circuit is connected in parallel with a bypass input end connected with the output end of the bypass DC/DC conversion unit.
The bypass DC/DC conversion unit consists of an input filter circuit, a high-frequency inverter circuit and an output rectification circuit which are connected in series.
After the scheme is adopted, the utility model discloses because a bypass DC transform unit has been newly increased, when having the interchange input, the interchange input only need can directly be the load power supply through bypass DC transform unit after the rectification, compares that prior art all obtains improving through efficiency and the reliability of two-stage transform unit.
The utility model discloses a DC/DC conversion unit that steps up is in the stand-by state when having the alternating current input, and simultaneously, the alternating current input is storage battery charging through AC/DC conversion unit. When no alternating current is input into the storage battery, the storage battery is boosted by the DC/DC boost conversion unit to supply power to the load, and at the moment, the AC/DC conversion unit and the bypass DC/DC conversion unit do not work.
Drawings
Fig. 1 is a schematic structural diagram of a conventional distributed dc power supply apparatus;
fig. 2 is a schematic structural diagram of the novel distributed dc power supply device.
Description of the reference symbols
A storage battery 10, an AC/DC conversion unit 20, a DC/DC boost conversion unit 30, a CPU management unit 40;
the battery comprises a storage battery 1, an AC/DC conversion unit 2, an input EMC circuit 21, an input rectification circuit 22, an input filter circuit 23, a high-frequency inverter circuit 24, an output rectification circuit 25, an output filter circuit 26, a bypass DC/DC conversion unit 3, an input filter circuit 31, a high-frequency inverter circuit 32, an output rectification circuit 33, a DC/DC boost conversion unit 4, an input filter circuit 41, a high-frequency inverter circuit 42, an output rectification circuit 43, an output filter circuit 44 and a CPU management unit 5.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 2, the present invention discloses a novel distributed DC power supply device, which includes a storage battery 1, an AC/DC conversion unit 2, a bypass DC/DC conversion unit 3, a DC/DC step-up conversion unit 4, and a CPU management unit 5.
The input end of the AC/DC conversion unit 2 is connected to an external power supply for AC input. The AC/DC conversion unit 2 steps down the alternating current to charge the secondary battery 1. The input of the AC/DC conversion unit 1 is rectified and then is provided with a bypass output end which is used for being connected with the input end of the bypass DC/DC conversion unit 3. The output end of the AC/DC conversion unit 2 is connected with the input end of the DC/DC boost conversion unit 4, and the AC/DC conversion unit 2 outputs direct current low voltage for the CPU management unit 5 to work and the storage battery 1 to charge. Specifically, the AC/DC conversion unit 2 is composed of an input EMC circuit 21, an input rectification circuit 22, an input filter circuit 23, a high-frequency inverter circuit 24, an output rectification circuit 25, and an output filter circuit 26, which are connected in series. The output of the input rectification circuit 22 is also provided in parallel with a bypass output for connection to the input of the bypass DC/DC conversion unit 3.
DC/DC boost converter 4 boosts the DC voltage stepped down by AC/DC converter 2 or boosts the low-voltage DC voltage of battery 1. The output end of the DC/DC boost conversion unit 4 outputs direct current for supplying frequent loads of the system. The output filter of the DC/DC boost converting unit 4 is provided with a bypass input terminal for connecting the output terminal of the bypass DC/DC converting unit 3. Specifically, the DC/DC boost converting unit 4 is composed of an input filter circuit 41, a high frequency inverter circuit 42, an output rectifier circuit 43, and an output filter circuit 44 connected in series. The input of the output filter circuit 44 is also provided in parallel with a bypass input for connecting the output of the bypass DC/DC converting unit 3.
The bypass DC/DC conversion unit 3 directly converts the alternating current into direct current to supply power to a load. Specifically, the bypass DC/DC conversion unit 3 is composed of an input filter circuit 31, a high-frequency inverter circuit 32, and an output rectifier circuit 33 connected in series.
The CPU management unit 5 is connected to the AC/DC conversion unit 2, the DC/DC boost conversion unit 4, and the battery 1, respectively. The CPU management unit 5 is operable to acquire information from the AC/DC converter 2, the DC/DC boost converter 4, and the battery 1, display the information, transmit the information remotely, coordinate the operation based on the acquired information, and the like.
The utility model discloses the theory of operation as follows:
one, with AC input
(1) After the alternating current input is rectified by the AC/DC conversion unit 2, the alternating current input can directly supply power for the load only by the bypass DC/DC conversion unit 3, and compared with the prior art, the efficiency and the reliability of the alternating current input are improved by the two stages of conversion units;
(2) the alternating current input is reduced through the AC/DC conversion unit 2 to charge the storage battery 1 for use when no alternating current input exists;
(3) the DC/DC boost conversion unit 4 is in a standby state.
Two, no AC input
The AC/DC conversion unit 2 and the bypass DC/DC conversion unit 3 do not work, and the storage battery 1 is boosted by the DC/DC boost conversion unit 3 to supply power to the load.
The utility model discloses a bypass DC converting unit 3 has been newly increased, and this bypass DC converting unit 3's output sharing DC boost converting unit 4's output filter circuit 44. The utility model discloses optimize the structure, improved the efficiency and the reliability of device.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.
Claims (4)
1. A novel distributed DC power supply device is characterized in that: the system comprises a storage battery, an AC/DC conversion unit, a bypass DC/DC conversion unit, a DC/DC boost conversion unit and a CPU management unit; the input end of the AC/DC conversion unit is connected with an external power supply, the input end of the AC/DC conversion unit is rectified and then is provided with a bypass output end which is connected with the input end of the bypass DC/DC conversion unit, the output end of the AC/DC conversion unit is connected with the input end of the DC/DC boost conversion unit, and the AC/DC conversion unit outputs direct-current low voltage for the CPU management unit to work and the storage battery to charge; the output end of the DC/DC boost conversion unit outputs direct current for supplying the frequent load of the system, and the output filter of the DC/DC boost conversion unit is connected with the output end of the bypass DC/DC conversion unit by a bypass input end; the CPU management unit is respectively connected with the AC/DC conversion unit, the DC/DC boost conversion unit and the storage battery.
2. A novel distributed dc power supply apparatus as defined in claim 1, wherein: the AC/DC conversion unit is composed of an input EMC circuit, an input rectifying circuit, an input filter circuit, a high-frequency inverter circuit, an output rectifying circuit and an output filter circuit which are connected in series, and the output end of the input rectifying circuit is connected with the input end of the bypass DC/DC conversion unit in parallel.
3. A novel distributed dc power supply apparatus as defined in claim 1, wherein: the DC/DC boost conversion unit consists of an input filter circuit, a high-frequency inverter circuit, an output rectification circuit and an output filter circuit which are connected in series, wherein the input end of the output filter circuit is connected in parallel with a bypass input end connected with the output end of the bypass DC/DC conversion unit.
4. A novel distributed dc power supply apparatus as defined in claim 1, wherein: the bypass DC/DC conversion unit consists of an input filter circuit, a high-frequency inverter circuit and an output rectification circuit which are connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120900530.7U CN215009725U (en) | 2021-04-28 | 2021-04-28 | Novel distributed direct-current power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120900530.7U CN215009725U (en) | 2021-04-28 | 2021-04-28 | Novel distributed direct-current power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215009725U true CN215009725U (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120900530.7U Active CN215009725U (en) | 2021-04-28 | 2021-04-28 | Novel distributed direct-current power supply device |
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| CN (1) | CN215009725U (en) |
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2021
- 2021-04-28 CN CN202120900530.7U patent/CN215009725U/en active Active
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