Switching device for main battery and standby battery of communication base station

Abstract

The invention relates to the technical field of main and standby battery switching devices, and discloses a communication base station main and standby battery switching device which comprises a main battery, a standby battery and a zero-delay arc-free switcher connected with the main battery and the standby battery in parallel. Wherein the zero-delay arc-free switcher is internally provided with a mechanical action device for switching an input power supply channel so as to select to use the main battery or the standby battery to supply power, and the zero-delay arc-free switcher is also provided with a group of output electrodes; and a capacitor connecting part for switching is fixedly arranged in the zero-delay arc-free switcher. According to the invention, the capacitor connection part for switching is used as an uninterruptible power supply unit in the switching action process of the mechanical device, so that the power supply within the shortest three seconds can be provided, the stable switching connection of the mechanical device is ensured, and the low-delay power supply requirement can be effectively met.

Description

Technical Field

[0001] The present invention relates to the technical field of main and standby battery switching devices, in particular to a main and standby battery switching device for a communication base station. Background Art

[0002] The current Chinese patent publication number is (CN111354585A) Disclosed is a dual power switching device, comprising a driving turntable, wing support bodies installed on both sides of the driving turntable, and wiring terminals located between the wing support bodies on both sides, moving contacts are installed on opposite surfaces of the wing support bodies on both sides, and static contacts are installed on both sides of the wiring terminals, moving conductors connecting a common wiring post and a moving contact are installed in the driving turntable and the wing support bodies, a U-shaped conductor is installed in the driving turntable, and a separation auxiliary mechanism is installed on the driving turntable, and the moving conductor and the U-shaped conductor are not installed with an electromagnetic shielding component. On the side, due to the same current direction, an electric force of attraction is generated between the two, so that the moving contact is prevented from being bounced off when in contact with the static contact, and when power switching is performed, the common wiring post is disconnected from the connected side circuit through the separation auxiliary mechanism, so that the corresponding moving conductor and the U-shaped conductor lose the electric force of attraction, thereby avoiding the disadvantage of slow switching of the two power supplies.

[0003] However, communication base station equipment has high requirements for the delay of uninterruptible power supply equipment, so the delay needs to be less than two milliseconds when the switching device is actuated. The delay of existing devices cannot meet the equipment requirements, and under high voltage or high current conditions, it is easy to produce arcs, affecting the safety of equipment and personnel. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to overcome the above problems, a communication base station main-standby battery switching device is provided, which solves the above problems.

[0005] The present invention solves the technical problem by adopting the following technical solutions: A communication base station main-backup battery switching device comprises a main battery and a backup battery, and a zero-delay arc-free switch connected in parallel with the main battery and the backup battery, wherein the zero-delay arc-free switch is provided with a mechanical action device for switching an input power supply channel and then selecting to use the main battery or the backup battery for power supply, and the zero-delay arc-free switch is also provided with a group of output electrodes, and a switching capacitor connection part is fixedly provided in the zero-delay arc-free switch, and the switching capacitor connection part is connected in series with the power supply line of the zero-delay arc-free switch and can be charged by any online battery of the main battery or the backup battery, and the switching capacitor connection part is used to provide uninterrupted power supply to the electrical equipment when the zero-delay arc-free switch switches the power supply channel, and the capacity of the switching capacitor connection part is determined according to the power of the electrical equipment, and the discharge time in the fully charged state shall not be less than three seconds, and the mechanical switching device in the zero-delay arc-free switch comprises an electric push rod, two groups of electrode heads and two conductive armature blocks, and when the electric push rod is actuated, only one of the conductive armature blocks can be connected to a group of electrode heads.

[0006] In one embodiment, a switching capacitor charging switch is fixedly provided on the zero-delay arc-free switch. After pressing the switching capacitor charging switch, the switching capacitor connecting part is charged. A charging indicator light is provided on the zero-delay arc-free switch to display the charging status of the switching capacitor connecting part. When the switching capacitor connecting part is completely charged, the charging indicator light turns green, indicating that the mechanical switching action can be performed.

[0007] In one embodiment, a main passage pressurization jumper and a secondary passage pressurization jumper are fixedly provided in the zero-delay arc-free switcher, wherein one end of the main passage pressurization jumper and the secondary passage pressurization jumper are connected through a connecting air pipe, and an electric push rod is fixedly provided at the lower end of the main passage pressurization jumper, and the electric push rod drives the main passage conductive connection block arranged in the main passage pressurization jumper to move, and at the same time, the piston sealed and slidably arranged in the secondary passage pressurization jumper moves under the action of air pressure when the electric push rod moves, so that only one of the main passage conductive connection block or the secondary passage conductive connection block remains in contact with the battery passage, and the ends of the main passage pressurization jumper and the secondary passage pressurization jumper are fixedly provided with arc-free electrode joints extending into the main passage pressurization jumper and the secondary passage pressurization jumper for respectively contacting and conducting with the main passage conductive connection block and the secondary passage conductive connection block, and an electric push rod switch is fixedly provided on the zero-delay arc-free switch for controlling the movement of the electric push rod.

[0008] In one embodiment, the main passage pressurized bay and the secondary passage pressurized bay are provided with inflation valves, and the main passage pressurized bay and the secondary passage pressurized bay are filled with inert protective gas through the inflation valves, and the air pressure in the main passage pressurized bay and the secondary passage pressurized bay is higher than the standard air pressure.

[0009] In one embodiment, the main passage pressurized joint cabin and the secondary passage pressurized joint cabin are filled with liquid metallic sodium, and the liquid level is always higher than the main passage conductive connection block or the secondary passage conductive connection block. When the electric push rod is actuated, the main passage conductive connection block or the secondary passage conductive connection block is conductively connected by the liquid metallic sodium before contacting the arc-free electrode joint, thereby effectively avoiding the generation of arcs.

[0010] In one embodiment, the two electrodes of the arc-free electrode joint arranged on the main passage pressurization jumper cabin or the secondary passage pressurization jumper cabin are of different lengths, thereby avoiding the state of two batteries being online at the same time during switching.

[0011] In one embodiment, the arc-free electrode joint includes a conductive slide fixed on the main passage pressurized joint cabin and a nickel-plated copper core electrode head inserted in the conductive slide, a sealing ring is provided at the tail end of the nickel-plated copper core electrode head and an inert protective gas is injected into the conductive slide, when the main passage conductive connecting block presses against the nickel-plated copper core electrode head, the pressure of the inert protective gas causes the nickel-plated copper core electrode head and the main passage conductive connecting block to be in mechanical contact.

[0012] In one embodiment, the arc-free electrode joint includes a conductive slide fixed on the main path pressurized joint cabin and a nickel-plated copper core electrode head inserted in the conductive slide, and a spring is provided in the conductive slide to push the nickel-plated copper core electrode head outward to ensure good contact with the main path conductive connection block or the secondary path conductive connection block.

[0013] The advantages and positive effects of the present invention are: the switching capacitor connection part is used as an uninterrupted power supply unit during the switching action of the mechanical device, which can provide a power supply of at least three seconds, ensure the smooth switching connection of the mechanical device, and effectively meet the low-latency power supply requirements; In addition, through the series-type pressurized chamber conductive structure, arc-free connection can be achieved under high voltage and high current conditions by using liquid metal sodium as the power cutoff when driven by the electric push rod, effectively avoiding the phenomenon of conductive contacts bouncing or carbonizing, and avoiding damage to batteries and other electrical components caused by high-voltage arcs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of 12 of the present invention; Figure 3 It is a structural schematic diagram of 12 of the present invention; Figure 4 It is a schematic diagram of the structure inside the present invention 12; Figure 5 yes Figure 4 26 internal structure schematic diagram; Figure 6 yes Figure 4 Schematic diagram of the internal structure of 26. DETAILED DESCRIPTION

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention. The embodiments of the present invention will be described in further detail with reference to the accompanying drawings: like Figure 1-3 As shown, the communication base station main-backup battery switching device described in the present invention includes a main battery 10 and a backup battery 11, and a zero-delay arc-free switch 12 connected in parallel with the main battery 10 and the backup battery 11, wherein the zero-delay arc-free switch 12 is provided with a mechanical action device for switching the input power supply channel to select the main battery 10 or the backup battery 11 for power supply, and the zero-delay arc-free switch 12 is also provided with a group of output electrodes, and a switching capacitor connecting part 14 is fixedly provided in the zero-delay arc-free switch 12, and the switching capacitor connecting part 14 is connected to the zero-delay arc-free switch 12. The power supply line of the arc switcher 12 can be charged in series by either the main battery 10 or the backup battery 11. The switching capacitor connection part 14 is used to provide uninterrupted power supply to the electrical equipment when the zero-delay arc-free switcher 12 switches the power supply channel. The capacity of the switching capacitor connection part 14 is determined according to the power of the electrical equipment, and its discharge time in a fully charged state shall not be less than three seconds. The mechanical switching device in the zero-delay arc-free switcher 12 includes an electric push rod 21, two groups of electrode heads and two conductive armature blocks. When the electric push rod 21 is actuated, only one of the conductive armature blocks can be connected to a group of electrode heads.

[0017] In one embodiment, a switching capacitor charging switch 24 is fixedly provided on the zero-delay arc-free switcher 12. After pressing the switching capacitor charging switch 24, the switching capacitor connecting part 14 is charged. A charging indicator light 15 is provided on the zero-delay arc-free switcher 12 to display the charging status of the switching capacitor connecting part 14. When the charging of the switching capacitor connecting part 14 is completed, the charging indicator light 15 lights up green, indicating that the mechanical switching action can be performed.

[0018] In one embodiment, a main passage pressurized lap joint cabin 19 and a secondary passage pressurized lap joint cabin 20 are fixedly provided in the zero-delay arc-free switch 12, wherein one end of the main passage pressurized lap joint cabin 19 and the secondary passage pressurized lap joint cabin 20 are connected through a connecting air pipe 25, and an electric push rod 21 is fixedly provided at the lower end of the main passage pressurized lap joint cabin 19, and the electric push rod 21 drives the main passage conductive connection block 28 arranged in the main passage pressurized lap joint cabin 19 to move, and at the same time, the piston 30 sealed and slidably arranged in the secondary passage pressurized lap joint cabin 20 moves when the electric push rod 21 moves. It moves under the action of air pressure, so that only one of the main path conductive connection block 28 or the secondary path conductive connection block 31 remains connected to the battery path. The ends of the main path pressurized connection cabin 19 and the secondary path pressurized connection cabin 20 are fixedly provided with arc-free electrode joints 26 extending into the main path pressurized connection cabin 19 and the secondary path pressurized connection cabin 20 for respectively contacting with the main path conductive connection block 28 and the secondary path conductive connection block 31 for electrical conduction. The zero-delay arc-free switch 12 is fixedly provided with an electric push rod switch 23 for controlling the action of the electric push rod 21.

[0019] In one embodiment, the main passage pressurized bay 19 and the secondary passage pressurized bay 20 are provided with inflation valves 27, and the main passage pressurized bay 19 and the secondary passage pressurized bay 20 are filled with inert protective gas through the inflation valves 27, and the air pressure in the main passage pressurized bay 19 and the secondary passage pressurized bay 20 is higher than the standard air pressure.

[0020] In one embodiment, the main passage pressurized joint cabin 19 and the secondary passage pressurized joint cabin 20 are filled with liquid metallic sodium, and the liquid level is always higher than the main passage conductive connection block 28 or the secondary passage conductive connection block 31. When the electric push rod 21 is actuated, the main passage conductive connection block 28 or the secondary passage conductive connection block 31 is electrically conductive by the liquid metallic sodium before contacting the arc-free electrode joint 26, thereby effectively avoiding the generation of arcs.

[0021] In one embodiment, the arc-free electrode joint 26 disposed on the main passage pressurized joint cabin 19 or the secondary passage pressurized joint cabin 20 has two electrodes of different lengths, thereby avoiding the state where two batteries are online at the same time during switching.

[0022] In one embodiment, the arc-free electrode joint 26 includes a conductive slide 33 fixed on the main passage pressurized joint cabin 19 and a nickel-plated copper core electrode head 32 inserted in the conductive slide 33. The tail end of the nickel-plated copper core electrode head 32 is provided with a sealing ring and an inert protective gas is injected into the conductive slide 33. When the main passage conductive connection block 28 is against the nickel-plated copper core electrode head 32, the pressure of the inert protective gas causes the nickel-plated copper core electrode head 32 and the main passage conductive connection block 28 to be in mechanical contact.

[0023] In one embodiment, the arc-free electrode joint 26 includes a conductive slide 33 fixed on the main path pressurized joint cabin 19 and a nickel-plated copper core electrode head 32 inserted in the conductive slide 33. A spring 34 is provided in the conductive slide 33 to push the nickel-plated copper core electrode head 32 outward to ensure good contact with the main path conductive connection block 28 or the secondary path conductive connection block 31.

[0024] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive, and therefore the present invention is not limited to the embodiments described in the specific implementation manners. Any other implementation manners derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. A communication base station main and standby battery switching device, characterized in that: The invention comprises a main battery (10) and a backup battery (11), and a zero-delay arc-free switch (12) connected in parallel with the main battery (10) and the backup battery (11), wherein the zero-delay arc-free switch (12) is provided with a mechanical action device for switching an input power supply channel and selecting to use the main battery (10) or the backup battery (11) for power supply, and the zero-delay arc-free switch (12) is also provided with a group of output electrodes, and a switching capacitor connection part (14) is fixedly provided in the zero-delay arc-free switch (12), and the switching capacitor connection part (14) is connected to the zero-delay arc-free switch (12). ) is connected in series with the power supply line and can be charged by any online battery of the main battery (10) or the backup battery (11). The switching capacitor connecting part (14) is used to provide uninterrupted power supply to the electrical equipment when the zero-delay arc-free switch (12) switches the power supply channel. The capacity of the switching capacitor connecting part (14) is determined according to the power of the electrical equipment and its discharge time in a fully charged state shall not be less than three seconds. The mechanical switching device in the zero-delay arc-free switch (12) includes an electric push rod (21) and two groups of electrode heads and two conductive armature blocks. When the electric push rod (21) is actuated, only one of the conductive armature blocks can be connected to a group of electrode heads.

2. The communication base station main-standby battery switching device according to claim 1, characterized in that: A switching capacitor charging switch (24) is fixedly provided on the zero-delay arc-free switch (12). When the switching capacitor charging switch (24) is pressed, the switching capacitor connecting part (14) is charged. A charging indicator light (15) is provided on the zero-delay arc-free switch (12) for displaying the charging state of the switching capacitor connecting part (14). When the charging of the switching capacitor connecting part (14) is completed, the charging indicator light (15) lights up green, indicating that a mechanical switching action can be performed.

3. The communication base station main-standby battery switching device according to claim 2, characterized in that: A main passage pressurized joint cabin (19) and a secondary passage pressurized joint cabin (20) are fixedly provided in the zero-delay arc-free switch (12), wherein one end of the main passage pressurized joint cabin (19) and the secondary passage pressurized joint cabin (20) are connected via a connecting air pipe (25), and an electric push rod (21) is fixedly provided at the lower end of the main passage pressurized joint cabin (19), wherein the electric push rod (21) drives a main passage conductive connection block (28) arranged in the main passage pressurized joint cabin (19) to move, and at the same time, a piston (30) sealed and slidably arranged in the secondary passage pressurized joint cabin (20) moves in the air when the electric push rod (21) moves. The main passage pressurized joint cabin (19) and the secondary passage pressurized joint cabin (20) are fixedly provided with arc-free electrode joints (26) extending into the main passage pressurized joint cabin (19) and the secondary passage pressurized joint cabin (20) for respectively contacting and conducting with the main passage conductive joint block (28) and the secondary passage conductive joint block (31); and the zero-delay arc-free switch (12) is fixedly provided with an electric push rod switch (23) for controlling the movement of the electric push rod (21).

4. The communication base station main-standby battery switching device according to claim 3 is characterized in that: The main passage pressurized bay (19) and the secondary passage pressurized bay (20) are provided with inflation valves (27), and the main passage pressurized bay (19) and the secondary passage pressurized bay (20) are filled with inert protective gas through the inflation valves (27), and the air pressure in the main passage pressurized bay (19) and the secondary passage pressurized bay (20) is higher than the standard air pressure.

5. The communication base station main-standby battery switching device according to claim 4, characterized in that: The main passage pressurized joint chamber (19) and the secondary passage pressurized joint chamber (20) are filled with liquid metallic sodium, the liquid level of which is always higher than the main passage conductive connection block (28) or the secondary passage conductive connection block (31). When the electric push rod (21) is actuated, the main passage conductive connection block (28) or the secondary passage conductive connection block (31) is electrically conductive by the liquid metallic sodium before contacting the arc-free electrode joint (26), thereby effectively avoiding the generation of an arc.

6. The communication base station main-standby battery switching device according to claim 5, characterized in that: The arc-free electrode joint (26) provided on the main passage pressurized joint cabin (19) or the secondary passage pressurized joint cabin (20) has two electrodes of different lengths, thereby avoiding the state where two batteries are online at the same time during switching.

7. The communication base station main-standby battery switching device according to claim 6, characterized in that: The arc-free electrode joint (26) comprises a conductive slide (33) fixed on the main passage pressurized joint cabin (19) and a nickel-plated copper core electrode head (32) inserted into the conductive slide (33); a sealing ring is provided at the tail end of the nickel-plated copper core electrode head (32) and an inert protective gas is injected into the conductive slide (33); when the main passage conductive connection block (28) presses against the nickel-plated copper core electrode head (32), the pressure of the inert protective gas causes the nickel-plated copper core electrode head (32) and the main passage conductive connection block (28) to be in mechanical contact.

8. The communication base station main-standby battery switching device according to claim 7, characterized in that: The arc-free electrode joint (26) comprises a conductive slide (33) fixed on the main passage pressurized joint chamber (19) and a nickel-plated copper core electrode head (32) inserted into the conductive slide (33), and a spring (34) is provided in the conductive slide (33) for lifting the nickel-plated copper core electrode head (32) outward to ensure good contact with the main passage conductive connection block (28) or the secondary passage conductive connection block (31).

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