CN104701919A - Portable DC power supply - Google Patents

Abstract

The invention provides a portable DC power supply. The portable DC power supply includes: a housing, the housing has an installation cavity; an energy storage part, the energy storage part is arranged in the installation cavity, and the positive pole of the energy storage part is connected to a positive output terminal, and the negative pole of the energy storage part is connected to a first negative terminal. Output terminal; solar charging part, the solar charging part is fixedly arranged on the housing, and the solar charging part has a positive output interface and a negative output interface, the positive output interface is connected to the positive pole of the energy storage part, and the negative output interface is connected to the negative pole of the energy storage part connect. The portable DC power supply can supply power to the electric operating mechanism, and then drive the ring network cabinet to judge whether the electric operating mechanism is normal.

Description

Portable DC Power Supply

technical field

The invention relates to the field of electrical equipment, in particular to a portable DC power supply.

Background technique

With the development of distribution network technology, distribution network automation has become an inevitable trend of technology development. The remote control, telemetry, and remote signaling of the ring network cabinet are one of the basic conditions that must be met. Therefore, the current production of the ring network cabinet must be equipped with an electric operating mechanism. The electric operating mechanism has the function of electric opening and closing. operate. The operating power supply voltage of the electric operating mechanism is 48 volts DC, which is generally provided by the DTU device designed as a set. However, since the supporting designed DTU device cannot be installed at the same time during the installation process, the existing electric operating mechanism of the ring main unit has no power supply, which makes it impossible to drive the ring main unit during acceptance, and it is impossible to judge whether the electric operating mechanism is normal.

Contents of the invention

The present invention aims to provide a portable DC power supply to solve the problem in the prior art that it is impossible to judge whether the electric operating mechanism of the transmission ring main unit is normal.

In order to achieve the above object, according to one aspect of the present invention, a portable DC power supply is provided. The portable DC power supply includes: a casing, the casing has an installation cavity; an energy storage part, the energy storage part is arranged in the installation cavity, and The positive pole of the energy part is connected to the positive output terminal, and the negative pole of the energy storage part is connected to the first negative output terminal; the solar charging part, the solar charging part is fixedly arranged on the casing, and the solar charging part has a positive output interface and a negative output interface, The positive output interface is connected to the positive pole of the energy storage unit, and the negative output interface is connected to the negative pole of the energy storage unit.

Further, the portable DC power supply also includes a mounting plate, which is fixedly arranged in the mounting cavity, and divides the mounting cavity into a first cavity and a second cavity, the energy storage part is disposed in the second cavity, the positive output terminal and the second cavity A negative output terminal is arranged on the installation board and located in the first cavity.

Further, the energy storage unit includes a plurality of energy storage units arranged in series, the positive pole of the energy storage unit is the positive pole of the first energy storage unit located at the first end of the energy storage unit, and the negative pole of the energy storage unit is located at the first end of the energy storage unit. The second terminal is the negative pole of the second energy storage unit.

Further, the portable DC power supply further includes a second negative output terminal, and the second negative output terminal is connected to the negative pole of the third energy storage unit between the first energy storage unit and the second energy storage unit.

Further, the portable DC power supply further includes a third negative output terminal, and the third negative output terminal is connected to the negative pole of the fourth energy storage unit between the second energy storage unit and the third energy storage unit.

Further, the portable DC power supply also includes a second linkage switch assembly fixedly arranged on the installation board, the second linkage switch assembly includes a third control switch and a fourth control switch, and the third control switch is connected to the positive output interface of the solar charging part Between the positive pole of the energy storage unit, the fourth control switch is connected between the negative output interface of the solar charging unit and the negative pole of the energy storage unit, and the third control switch is linked with the fourth control switch to be closed or opened simultaneously.

Further, the portable DC power supply also includes a detection part, the detection part includes a second voltmeter, the second voltmeter is fixedly arranged on the installation board, and the dial of the second voltmeter faces into the first cavity, and the second voltmeter is connected in parallel to the solar energy. on the charging unit.

Further, the detection part further includes a second protection part, the second protection part is a second fuse, and the second fuse is connected in series between the positive output port of the solar charging part and the positive pole of the second voltmeter.

Further, the housing includes: an upper cover; a box body, the box body has an opening, the upper cover is hinged on the box body and covers the opening, the installation plate is located in the box body, the installation plate and the upper cover form a first cavity, the installation plate and the upper cover The box body forms the second cavity.

Furthermore, the portable DC power supply also includes a cooling fan, which is fixedly arranged on the box body and connected in parallel to the energy storage part.

Applying the technical solution of the present invention, the portable DC power supply includes a casing, an energy storage part and a solar charging part. The casing has an installation cavity, and the installation cavity is used to carry other components of the portable DC power supply. The casing can well ensure the safety of other components of the portable DC power supply while improving portability. The energy storage part is arranged in the installation cavity, and the positive pole of the energy storage part is connected to the positive output terminal, the negative pole of the energy storage part is connected to the first negative output terminal, and the energy storage part is connected to the load through the positive output terminal and the first negative output terminal. There is no power supply to the load. The solar charging part includes a positive output port and a negative output port. The positive output port is connected to the positive pole of the energy storage part, and the negative output port is connected to the negative pole of the energy storage part, so as to be able to charge the energy storage part and improve the battery life of the portable DC power supply. Extend the use time of the portable DC power supply, so that the portable DC power supply can be reused.

Description of drawings

The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

FIG. 1 shows a schematic diagram of a three-dimensional structure of a portable DC power supply according to an embodiment of the present invention; and

Fig. 2 shows a schematic diagram of a portable DC power supply according to an embodiment of the present invention.

Description of reference numerals: 10, energy storage unit; 11, first energy storage unit; 12, second energy storage unit; 13, third energy storage unit; 14, fourth energy storage unit; 21, positive output terminal; 22 , the first negative output terminal; 23, the second negative output terminal; 24, the third negative output terminal; 30, the mounting plate; 41, the first linkage switch assembly; 42, the second linkage switch assembly; 43, the fan switch; 51 , the first voltmeter; 52, the ammeter; 53, the second voltmeter; 61, the upper cover; 62, the box body; 90, the fan.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

As shown in FIGS. 1 and 2 , according to an embodiment of the present invention, a portable DC power supply includes a casing, an energy storage part 10 and a solar charging part. The casing has an installation cavity, and the installation cavity is used to carry other components of the portable DC power supply. The casing can well ensure the safety of other components of the portable DC power supply while improving portability. The energy storage unit 10 is arranged in the installation cavity, and the positive pole of the energy storage unit 10 is connected to the positive output terminal 21, and the negative pole of the energy storage unit 10 is connected to the first negative output terminal 22, and the energy storage unit 10 connects the positive output terminal 21 and the first negative output terminal 22. A negative output terminal 22 is connected to the load and supplies power to the load. The solar charging part includes a positive output port and a negative output port, the positive output port is connected to the positive pole of the energy storage part 10, and the negative output port is connected to the negative pole of the energy storage part 10, so as to be able to charge the energy storage part 10 and improve the performance of the portable DC power supply. Endurance, prolong the use time of the portable DC power supply, so that the portable DC power supply can be used repeatedly.

The portable DC power supply is applied to the distribution network automation system. Through the portable DC power supply, the electric operating mechanism of the ring main unit can be powered to drive the ring main unit, and it can be judged whether the electric operating mechanism of the ring main unit is normal.

In this embodiment, in order to improve the portability of the portable DC power supply, at the same time protect the components in the portable DC power supply, prolong the service life of the portable DC power supply, and prevent accidental collisions from damaging the portable DC power supply. The casing includes an upper cover 61 and a box body 62 . The box body 62 has an opening, and the upper cover 61 is hinged on the box body 62 and covers the opening. When not in use, the upper cover 61 and the box body 62 are locked by a lock and a buckle, so that the portable DC power supply can be carried conveniently. When in use, the upper cover 61 can be opened.

The portable DC power supply also includes a mounting plate 30, the mounting plate 30 is fixedly arranged in the mounting cavity, and divides the mounting cavity into a first cavity and a second cavity, the energy storage part 10 is arranged in the second cavity, and the positive output terminal 21 and The first negative output terminals 22 are all disposed on the mounting board 30 and located in the first cavity. The mounting plate 30 is located in the box body 62 , the mounting plate 30 and the upper cover 61 enclose a first cavity, and the mounting plate 30 and the box body 62 enclose a second cavity. In this way, after opening the upper cover 61, the load can be easily connected to the portable DC power supply, and the operation is convenient and fast. The portable direct current power supply is small in size, light in weight, stable in voltage, and can store large electric energy, so it can conveniently supply power to the electric operating mechanism.

In this embodiment, the energy storage unit 10 includes a plurality of energy storage units arranged in series. The energy storage unit is a storage battery, and the output voltage of a single storage battery is 12 volts. Multiple batteries connected in series have reached the required output voltage. The output voltage of the energy storage unit 10 is 48 volts when supplying power to the electric operating mechanism, so the energy storage unit 10 is composed of four accumulators connected in series. Wherein, the battery located at the first end of the energy storage unit 10 is the first energy storage unit 11, the battery connected after the first energy storage unit 11 is the third energy storage unit 13, and the battery connected after the third energy storage unit 13 is The fourth energy storage unit 14 , and the battery connected after the fourth energy storage unit 14 is the second energy storage unit 12 .

The positive pole of the energy storage unit 10 is the positive pole of the first energy storage unit 11 located at the first end of the energy storage unit 10, the negative pole of the energy storage unit 10 is the negative pole of the second energy storage unit located at the second end of the energy storage unit 10, The voltage between the positive pole of the first energy storage unit 11 and the negative pole of the second energy storage unit 12 is a first voltage value. The first voltage value in this embodiment is 48 volts. In other embodiments, different first voltage values may be selected according to different power supply requirements.

In order to improve the applicability of the portable DC voltage and make the portable DC power supply more widely applicable, the portable DC power supply further includes a second negative output terminal 23 and a third negative output terminal 24 .

Wherein, the second negative output terminal 23 is connected to the negative pole of the third energy storage unit 13 , and the voltage between the second negative output terminal 23 and the positive output terminal 21 is the second voltage value. The second voltage value is 24 volts.

The third negative output terminal 24 is connected to the negative pole of the fourth energy storage unit 14 between the second energy storage unit 12 and the third energy storage unit 13, and the voltage between the third negative output terminal 24 and the positive output terminal 21 is the third voltage value. The third voltage value is 36 volts.

In order to facilitate the connection with the load, both the second negative output terminal 23 and the third negative output terminal 24 are fixedly arranged on the mounting board 30 and located in the first cavity. In this embodiment, the positive output terminal 21, the first negative output terminal 22, the second negative output terminal 23 and the third negative output terminal 24 are all binding posts. In order to facilitate the distinction between the positive output terminal 21 and the first negative output terminal 22 , the second negative output terminal 23 and the third negative output terminal 24 adopt different colors, or on the mounting board 30 with the positive output terminal 21, the first negative output terminal 22, the second negative output terminal 23 and the third negative output terminal 24 is marked on the corresponding position.

The solar charging part further includes a solar battery panel, which is fixedly arranged on the upper surface of the upper cover 61 of the casing, so as to convert solar energy into electrical energy to supply power to the energy storage unit 10 . The positive output port is connected to the positive pole of the solar panel, and the negative output port is connected to the negative pole of the solar panel. The process of converting light energy into electric energy through the solar charging part will not pollute the environment, and does not need to waste other resources.

In order to conveniently control the operation and shutdown of the portable DC power supply and avoid waste of electric energy, the portable DC power supply also includes a first linkage switch assembly 41 fixedly arranged on the mounting plate 30. The first linkage switch assembly 41 includes a first control switch and a second Control switches, the first control switch is connected between the positive output terminal 21 and the positive pole of the energy storage unit 10, the second control switch is connected between the first negative output terminal 22 and the negative pole of the energy storage unit 10, the first control switch and The second control switch is linked to be closed or opened simultaneously. In this embodiment, the first linkage switch component 41 is a double switch. Preferably, the first linkage switch assembly 41 is an air switch.

The portable DC power supply also includes a second linkage switch assembly 42 fixedly arranged on the mounting plate 30, the second linkage switch assembly 42 includes a third control switch and a fourth control switch, the third control switch is connected to the positive output interface of the solar charging part Between the positive pole of the energy storage unit 10, the fourth control switch is connected between the negative output interface of the solar charging unit and the energy storage unit 10, and the third control switch is linked with the fourth control switch to be closed or opened at the same time. In this embodiment, the second linkage switch assembly 42 is a single-pole switch. The second linkage switch assembly 42 can control the solar charging part to provide electric energy to the energy storage part 10 or directly supply power to the load as required. When the solar charging part directly charges the load, the first linkage switch assembly 41 is turned off, and the second linkage switch assembly 42 is closed.

In order to monitor the working status of the portable DC power supply conveniently and ensure the working safety of the portable DC power supply, the portable DC power supply also includes a detection part, which includes a first voltmeter 51, a second voltmeter 53, a first protection part, a second protection parts and ammeter 52.

The first voltmeter 51 is fixedly arranged on the installation board 30 , and the dial of the first voltmeter 51 faces into the first cavity, and the first voltmeter 51 is connected in parallel to the energy storage part 10 . The first voltmeter 51 is used to detect the voltage value between the positive pole and the negative pole of the energy storage unit 10, so as to ensure that the voltage output by the energy storage unit 10 can normally supply power to the electric operating mechanism of the ring main unit and drive the ring main unit normally.

In order to protect the safety of the first voltmeter 51 , the first protection element is connected in series between the positive pole of the energy storage part 10 and the positive pole of the first voltmeter 51 . In this embodiment, the first protection element is a first fuse.

The second voltmeter 53 is fixedly arranged on the mounting plate 30, and the dial of the second voltmeter 53 faces in the first cavity, and the second voltmeter 53 is connected in parallel on the solar charging part, and the second voltmeter 53 is used for detecting the solar charging part output voltage in order to be able to.

The second protection element is a second fuse, and the second fuse is connected in series between the positive pole of the solar charging part and the positive pole of the second voltmeter 53 to protect the safety of the second voltmeter 53 .

The ammeter 52 is fixedly arranged on the installation board 30 , and the dial of the ammeter 52 faces into the first cavity, and the ammeter 52 is connected in series with the energy storage part 10 . The ammeter 52 is used to detect the magnitude of the current on the energy storage unit 10 .

The portable DC power supply also includes a cooling fan 90, the cooling fan 90 is fixedly arranged on the casing 62, and is connected in parallel on the energy storage part 10, so as to supply power through the energy storage part 10 to cool down the components in the casing 62 to ensure the temperature in the casing 62. All components can work normally, avoiding damage to components due to excessive temperature in the box body 62 .

In order to control the operation of the cooling fan 90 conveniently, a fan switch 43 is provided on the portable DC power supply. The fan switch 43 is connected in series between the positive pole of the energy storage unit 10 and the positive pole of the cooling fan 90. The fan switch 43 is fixedly arranged on the mounting plate 30. To facilitate the operation of the operator.

From the above description, it can be seen that the above-mentioned embodiments of the present invention have achieved the following technical effects: the portable DC power supply is small in size, light in weight, stable in voltage, and sufficient in capacity, and can conveniently supply power to the electric operating mechanism to realize the The transmission of the network cabinet can provide the power supply that meets the power requirements of the transmission of the electric operating mechanism of the ring main unit, and achieve the purpose of eliminating the blind spot of the electric operating mechanism. The portable DC power supply can provide different voltage levels of 24 volts, 36 volts, and 48 volts, which is suitable for more equipment and has good applicability.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A portable DC power supply, comprising: a housing, the housing has an installation cavity; An energy storage part (10), the energy storage part (10) is arranged in the installation cavity, and the positive pole of the energy storage part (10) is connected to a positive output terminal (21), and the energy storage part (10) ) is connected to the negative pole of the first negative output terminal (22); A solar charging part, the solar charging part is fixedly arranged on the housing, and the solar charging part has a positive output interface and a negative output interface, and the positive output interface is connected to the positive pole of the energy storage part (10) , the negative output interface is connected to the negative pole of the energy storage unit (10). 2. The portable DC power supply according to claim 1, characterized in that, the portable DC power supply further comprises a mounting plate (30), the mounting plate (30) is fixedly arranged in the mounting cavity, and the mounting plate (30) The cavity is divided into a first cavity and a second cavity, the energy storage part (10) is arranged in the second cavity, and the positive output terminal (21) and the first negative output terminal (22) are both It is arranged on the installation plate (30) and located in the first cavity. 3. The portable DC power supply according to claim 2, characterized in that the energy storage unit (10) includes a plurality of energy storage units arranged in series, and the positive pole of the energy storage unit (10) is located at the The positive pole of the first energy storage unit (11) at the first end of the energy part (10), the negative pole of the energy storage part (10) is the second energy storage unit located at the second end of the energy storage part (10) the negative pole. 4. The portable DC power supply according to claim 3, characterized in that, the portable DC power supply further comprises a second negative output terminal (23), the second negative output terminal (23) is connected to the first storage On the negative electrode of the third energy storage unit (13) between the energy unit (11) and the second energy storage unit (12). 5. The portable DC power supply according to claim 4, characterized in that, the portable DC power supply further comprises a third negative output terminal (24), the third negative output terminal (24) is connected to the second storage On the negative electrode of the fourth energy storage unit (14) between the energy unit (12) and the third energy storage unit (13). 6. The portable DC power supply according to claim 2, characterized in that, the portable DC power supply further comprises a second linkage switch assembly (42) fixedly arranged on the installation board (30), the second linkage switch assembly (42) The switch assembly (42) includes a third control switch and a fourth control switch, the third control switch is connected between the positive output interface of the solar charging part and the positive pole of the energy storage part (10), the first Four control switches are connected between the negative output interface of the solar charging part and the negative pole of the energy storage part (10), and the third control switch is linked with the fourth control switch to be closed or opened simultaneously. 7. The portable DC power supply according to claim 6, characterized in that the portable DC power supply further comprises a detection part, the detection part comprises a second voltmeter (53), and the second voltmeter (53) is fixed It is arranged on the installation board (30), and the dial of the second voltmeter (53) faces into the first cavity, and the second voltmeter (53) is connected in parallel to the solar charging part. 8. The portable DC power supply according to claim 7, characterized in that, the detection part further comprises a second protection element, the second protection element is a second fuse, and the second fuse is connected in series to the Between the positive output port of the solar charging part and the positive pole of the second voltmeter (53). 9. The portable DC power supply according to claim 2, wherein the housing comprises: upper cover (61); A box (62), the box (62) has an opening, the upper cover (61) is hinged on the box (62) and covers the opening, the installation plate (30) is located on the box In the body (62), the installation plate (30) and the upper cover (61) enclose the first cavity, and the installation plate (30) and the box (62) enclose the first cavity. Two chambers. 10. The portable DC power supply according to claim 9, characterized in that, the portable DC power supply further comprises a cooling fan (90), and the cooling fan (90) is fixedly arranged on the box body (62), and connected in parallel to the energy storage part (10).