Uninterruptible power supply charge-discharge dual power supply system

Abstract

The utility model discloses a kind of uninterrupted power supply charge and discharge dual power supply systems, belong to equipment power supply technical field, including mains module, standby power module, input side dual power supply switching module, output side dual power supply switching module and uninterrupted power supply UPS;The first input of the input side dual power supply switching module is electrically connected with the mains module, the second input of the input side dual power supply switching module is electrically connected with the standby power module, the output of the input side dual power supply switching module is respectively electrically connected with the input of the uninterrupted power supply UPS and the first input of the output side dual power supply switching module, the output of the uninterrupted power supply UPS is electrically connected with the second input of the output side dual power supply switching module, and the output of the output side dual power supply switching module is electrically connected with load.The uninterrupted power supply charge and discharge dual power supply system solves the problem that traditional power supply system often exists unstable power supply.

Description

Technical Field

[0001] This utility model relates to the field of equipment power supply technology, and in particular to an uninterruptible power supply charging and discharging dual power supply system. Background Technology

[0002] In prefabricated substations used in electronic equipment and communication base stations where power stability is critical, the stability and reliability of the power supply are extremely important. Power outages can lead to severe economic losses and safety hazards. Traditional power systems, lacking backup power, often suffer from unstable power supply when a UPS fails, failing to meet the high power requirements of these scenarios. Utility Model Content

[0003] In order to overcome the defects of the existing technology, this utility model provides an uninterruptible power supply charging and discharging dual power supply system to solve the above problems.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an uninterruptible power supply charging and discharging dual power supply system, including a main power supply module, a backup power supply module, an input-side dual power supply switching module, an output-side dual power supply switching module, and an uninterruptible power supply UPS. The first input terminal of the input-side dual power switching module is electrically connected to the main power module, the second input terminal of the input-side dual power switching module is electrically connected to the backup power module, the output terminal of the input-side dual power switching module is electrically connected to the input terminal of the uninterruptible power supply (UPS) and the first input terminal of the output-side dual power switching module, the output terminal of the UPS is electrically connected to the second input terminal of the output-side dual power switching module, and the output terminal of the output-side dual power switching module is electrically connected to the load.

[0005] Preferably, the main power supply module is the secondary side of the auxiliary transformer in the transformer substation, and the backup power supply module is an external power source for the transformer substation.

[0006] Specifically, the input-side dual power supply switching module is a dual power supply contactor, the first input terminal of the input-side dual power supply switching module is a normally closed contact, and the second input terminal of the input-side dual power supply switching module is a normally open contact.

[0007] Optionally, the output-side dual power supply switching module is a dual power supply contactor, the first input terminal of the output-side dual power supply switching module is a normally open contact, and the second input terminal of the output-side dual power supply switching module is a normally closed contact.

[0008] Preferably, all loads are connected in parallel and then electrically connected to the output terminal of the dual power supply switching module on the output side.

[0009] The beneficial effects of this utility model are as follows: In the uninterruptible power supply (UPS) dual-power system, through the coordinated operation of the two power supplies, the main power module can simultaneously supply power to the load and charge the UPS when it is working normally; when the UPS fails, the main power supply provides independent power, improving system redundancy; the main power module, backup power module, and UPS can be freely switched through the input-side dual-power switching module and the output-side dual-power switching module, ensuring safe power use for the equipment and improving power stability and safety; in the event of a UPS failure, the switching between the input-side dual-power switching module and the output-side dual-power switching module... The output of the input-side dual power switching module supplies power to the load after passing through the first input of the output-side dual power switching module, ensuring that UPS power supply failures can be repaired and replaced without power interruption. Under normal circumstances, the main power module supplies power to the load sequentially through the first input of the input-side dual power switching module and the first input of the output-side dual power switching module, bypassing the UPS. This reduces the UPS failure rate due to less frequent use, and the UPS is only used during power outages at the project site, ensuring its durability and extending its service life. Attached Figure Description

[0010] Figure 1 This is a circuit diagram of an uninterruptible power supply charging and discharging dual power supply system in one embodiment of the present invention. Figure 2 This is a circuit diagram of the input-side dual power supply switching module in one embodiment of the present invention; Figure 3 This is a circuit diagram of the output-side dual power supply switching module in one embodiment of the present invention. Detailed Implementation

[0011] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0012] like Figure 1 , Figure 2 and Figure 3 As shown, an uninterruptible power supply (UPS) charging and discharging dual power supply system includes a main power supply module, a backup power supply module, an input-side dual power supply switching module, an output-side dual power supply switching module, and an uninterruptible power supply (UPS). The first input terminal of the input-side dual power switching module is electrically connected to the main power module, the second input terminal of the input-side dual power switching module is electrically connected to the backup power module, the output terminal of the input-side dual power switching module is electrically connected to the input terminal of the uninterruptible power supply (UPS) and the first input terminal of the output-side dual power switching module, the output terminal of the UPS is electrically connected to the second input terminal of the output-side dual power switching module, and the output terminal of the output-side dual power switching module is electrically connected to the load.

[0013] In the aforementioned uninterruptible power supply (UPS) dual-power system, the main power module can simultaneously supply power to the load and charge the UPS when it is functioning normally. In the event of a UPS failure, the main power supply provides independent power, enhancing system redundancy. The input-side and output-side dual-power switching modules allow for seamless switching between the main power module, backup power module, and UPS, ensuring safe power supply and improving power stability and security. In the event of a UPS failure, the input-side and output-side dual-power switching modules switch the power supply to the main power module, backup power module, and UPS. The output of the power source switching module supplies power to the load after passing through the first input of the output-side dual power switching module, ensuring that the UPS power supply can be repaired and replaced without power interruption. Under normal circumstances, the main power module supplies power to the load after passing through the first input of the input-side dual power switching module and the first input of the output-side dual power switching module, bypassing the UPS. This reduces the UPS failure rate due to less frequent use, and the UPS is only used when there is a power outage at the project site, ensuring its durability and extending its service life.

[0014] Preferably, the main power supply module is the secondary side of the auxiliary transformer in the transformer substation, and the backup power supply module is an external power source for the transformer substation.

[0015] Under normal circumstances, the first input terminal of the input-side dual power supply switching module is closed and connected to its output terminal, and the first input terminal of the output-side dual power supply switching module is closed and connected to its output terminal. The electrical energy generated by the secondary side of the auxiliary transformer in the transformer box passes through the first input terminal of the input-side dual power supply switching module and the first input terminal of the output-side dual power supply switching module in sequence to supply power to the load.

[0016] When the auxiliary transformer in the transformer substation is under maintenance or malfunctions, the second input terminal of the input-side dual power supply switching module is closed and connected to its output terminal, and the first input terminal of the output-side dual power supply switching module is closed and connected to its output terminal. The electrical energy generated by the external power source of the transformer substation passes through the second input terminal of the input-side dual power supply switching module and the first input terminal of the output-side dual power supply switching module in sequence to supply power to the load.

[0017] When an uninterruptible power supply (UPS) is required, the second input terminal of the output-side dual power switching module is closed and connected to its output terminal, while the first input terminal of the output-side dual power switching module is disconnected from its output terminal. This allows the output terminal of the UPS to be connected to the load through the output-side dual power switching module, thereby supplying power to the load.

[0018] Optionally, the input-side dual power supply switching module is a dual power supply contactor, the first input terminal of the input-side dual power supply switching module is a normally closed contact, and the second input terminal of the input-side dual power supply switching module is a normally open contact.

[0019] In this embodiment, since one of them is a normally closed contact and the other is a normally open contact, the opening and closing states of the first input terminal and the second input terminal of the input-side dual power supply switching module are complementary. That is, when the first input terminal and its output terminal of the input-side dual power supply switching module are closed, the second input terminal and its output terminal of the input-side dual power supply switching module are disconnected, and when the first input terminal and its output terminal of the input-side dual power supply switching module are disconnected, the second input terminal and its output terminal of the input-side dual power supply switching module are closed.

[0020] Specifically, the output-side dual power supply switching module is a dual power supply contactor, the first input terminal of the output-side dual power supply switching module is a normally open contact, and the second input terminal of the output-side dual power supply switching module is a normally closed contact.

[0021] In this embodiment, since one of them is a normally closed contact and the other is a normally open contact, the opening and closing states of the first input terminal and the second input terminal of the output-side dual power supply switching module are complementary. That is, when the first input terminal and its output terminal of the output-side dual power supply switching module are closed, the second input terminal and its output terminal of the output-side dual power supply switching module are disconnected, and when the first input terminal and its output terminal of the output-side dual power supply switching module are disconnected, the second input terminal and its output terminal of the output-side dual power supply switching module are closed.

[0022] It is worth noting that all loads are connected in parallel and then electrically connected to the output terminal of the dual power supply switching module on the output side.

[0023] In this embodiment, a host computer is set up to electrically connect the control terminals of the input-side dual power switching module and the output-side dual power switching module to the control output terminal of the host computer. The host computer controls the opening and closing of the first input terminal and the second input terminal and the output terminal of the input-side dual power switching module, and the host computer controls the opening and closing of the first input terminal and the second input terminal and the output terminal of the output-side dual power switching module.

[0024] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A dual-power uninterruptible power supply charging and discharging system, characterized in that: Includes main power supply module, backup power supply module, input-side dual power supply switching module, output-side dual power supply switching module and uninterruptible power supply (UPS); The first input terminal of the input-side dual power switching module is electrically connected to the main power module, the second input terminal of the input-side dual power switching module is electrically connected to the backup power module, the output terminal of the input-side dual power switching module is electrically connected to the input terminal of the uninterruptible power supply (UPS) and the first input terminal of the output-side dual power switching module, the output terminal of the UPS is electrically connected to the second input terminal of the output-side dual power switching module, and the output terminal of the output-side dual power switching module is electrically connected to the load.

2. The uninterruptible power supply charging and discharging dual power supply system according to claim 1, characterized in that: The main power supply module is the secondary side of the auxiliary transformer in the transformer substation, and the backup power supply module is an external power source for the transformer substation.

3. The uninterruptible power supply charging and discharging dual power supply system according to claim 1, characterized in that: The input-side dual power supply switching module is a dual power supply contactor. The first input terminal of the input-side dual power supply switching module is a normally closed contact, and the second input terminal of the input-side dual power supply switching module is a normally open contact.

4. The uninterruptible power supply charging and discharging dual power supply system according to claim 1, characterized in that: The output-side dual power supply switching module is a dual power supply contactor. The first input terminal of the output-side dual power supply switching module is a normally open contact, and the second input terminal of the output-side dual power supply switching module is a normally closed contact.

5. The uninterruptible power supply charging and discharging dual power supply system according to claim 1, characterized in that: All loads are connected in parallel and then electrically connected to the output terminal of the dual power supply switching module on the output side.

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