CN223729498U - Symmetrical balance type direct current power supply system wiring structure - Google Patents
Symmetrical balance type direct current power supply system wiring structureInfo
- Publication number
- CN223729498U CN223729498U CN202423282099.7U CN202423282099U CN223729498U CN 223729498 U CN223729498 U CN 223729498U CN 202423282099 U CN202423282099 U CN 202423282099U CN 223729498 U CN223729498 U CN 223729498U
- Authority
- CN
- China
- Prior art keywords
- battery pack
- storage battery
- charging device
- direct current
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Stand-By Power Supply Arrangements (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The wiring structure of the symmetrical balance type direct current power supply system comprises a first storage battery pack and a second storage battery pack, wherein the first storage battery pack is connected with a first charging device, the second storage battery pack is connected with a second charging device, the first storage battery pack and the second storage battery pack are respectively connected to a bus through a first intelligent circuit breaker and a second intelligent circuit breaker, the first charging device is connected with the first storage battery pack through a first charging switch, and the second charging device is connected with the second storage battery pack through a second charging switch. The utility model provides a direct current system wiring of a symmetrical balance structure which meets the reliability, safety and flexibility of a small-sized project, and designs a direct current system of which 2 groups of storage batteries are mutually standby single bus wiring, thereby meeting the project requirements of the small-sized power project.
Description
Technical Field
The utility model relates to a wiring structure of a symmetrical balance type direct current power supply system.
Background
Because the direct current system with single bus and single storage battery is provided with only one group of storage battery, the direct current storage battery cannot be overhauled offline, when alternating current in factories and stations is in power failure, once the storage battery of the direct current system has a problem, the whole bus is in power failure, and the safety and the reliability are reduced.
Disclosure of utility model
Aiming at the problems that the storage battery of the existing direct current system has a problem that the whole bus is in power failure and the safety and reliability are reduced, the utility model provides a wiring structure of a symmetrical balanced direct current power supply system, which meets the requirements of the reliability, the safety and the flexibility of a small direct current system of the power system.
The aim of the utility model is achieved by the following technical scheme.
The wiring structure of the symmetrical balance type direct current power supply system comprises a first storage battery pack and a second storage battery pack, wherein the first storage battery pack is connected with a first charging device, and the second storage battery pack is connected with a second charging device;
the first charging device is connected with the first storage battery pack through a first charging switch, and the second charging device is connected with the second storage battery pack through a second charging switch.
The first storage battery pack and the second storage battery pack are valve-regulated lead-acid batteries or lithium iron phosphate batteries.
And an insulation monitoring device and a storage battery state monitoring device are also arranged on the bus.
The first charging device and the second charging device are both connected with a centralized monitor, and the centralized monitor is also connected to the bus.
The first storage battery pack and the second storage battery pack are connected with a voltmeter and an ammeter, and the first charging device and the second charging device are connected with the ammeter.
The utility model has the beneficial effects that the direct current system wiring of the symmetrical balance structure meeting the requirements of the reliability, the safety and the flexibility of the small engineering is provided, the direct current system of the single bus wiring with 2 groups of storage batteries which are mutually standby is designed, and the requirements of the small electric engineering project are met.
Drawings
Fig. 1 is a schematic diagram of the present utility model.
Detailed Description
The present utility model is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present utility model.
As shown in fig. 1, the wiring structure of the symmetrical balance type direct current power supply system comprises a first storage battery pack 1 and a second storage battery pack 2, wherein the first storage battery pack 1 is connected with a first charging device 3, the second storage battery pack 2 is connected with a second charging device 4, and the first storage battery pack 1 and the second storage battery pack 2 are respectively connected to a bus 6 through a first intelligent breaker 5 and a second intelligent breaker 9.
Further, the first storage battery pack 1 and the second storage battery pack 2 are valve-regulated lead-acid batteries or lithium iron phosphate batteries.
Further, an insulation monitoring device and a battery state monitoring device are also arranged on the bus 6.
Further, the first charging device 3 and the second charging device 4 are both connected with a centralized monitor, the centralized monitor is also connected to the bus 6, and the centralized monitor acquires single storage battery data.
Further, the first charging device 3 is connected to the first battery pack 1 through a first charging switch 7, and the second charging device 4 is connected to the second battery pack 2 through a second charging switch 8.
Furthermore, the first storage battery pack 1 and the second storage battery pack 2 are connected with a voltmeter and an ammeter, and the first charging device 3 and the second charging device 4 are connected with the ammeter.
The working principle of the utility model is as follows:
(1) When the direct current system is in normal operation, the first intelligent circuit breaker 5, the second intelligent circuit breaker 9 and the first charging switch 7 are all closed, the switches from the first charging device 3 to the first storage battery 1 to the bus 6 are in a closing state, and the first charging device 3 is responsible for floating charging the first storage battery 1 and the second storage battery 2.
(2) When the first storage battery pack 1 needs to be uniformly charged, the first intelligent circuit breaker 5 is disconnected, and the first storage battery pack 1 to the bus switch are in a disconnected state, so that the first storage battery pack 1 is separated from the direct current bus. And when the voltage difference is smaller than 5V, the first charging switch 7 is opened, the first intelligent circuit breaker 5 is closed, and the first storage battery 1 is thrown back to the direct current bus. When the first storage battery pack 1 is charged, the second intelligent breaker 9 is closed, and the second storage battery pack 2 is guaranteed to be connected to the direct current bus.
(3) When the second storage battery pack 2 needs to be uniformly charged, the first intelligent circuit breaker 5 and the first charging switch 7 are both closed, the first charging device 3 is still in a closing state through the first storage battery pack and the bus switch, the second intelligent circuit breaker 9 is opened, the second storage battery pack 2 is separated from the direct current bus, the second charging switch 8 is closed, the output voltage of the second charging device 4 is used for uniformly charging the second storage battery pack 2 with uniform charging voltage, after the uniform charging is finished, whether the voltage difference between the voltage of the second storage battery pack 2 and the bus voltage is smaller than 5V is judged, when the voltage difference is smaller than 5V, the second charging switch 8 is opened, the second intelligent circuit breaker 9 is closed, and the second storage battery pack 2 is thrown back to the direct current bus.
(4) When the first storage battery 1/the second storage battery 2 are connected to the direct current bus, the current transformers on the two main loops reach the limit value of the short circuit current of the battery and the directions are opposite, the second intelligent breaker 9 of the second storage battery 2 is opened, and the battery on the short circuit side is separated from the direct current system.
While the utility model has been described in terms of preferred embodiments, it will be understood that the utility model is not limited thereto, but rather, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the scope of the utility model.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423282099.7U CN223729498U (en) | 2024-12-30 | 2024-12-30 | Symmetrical balance type direct current power supply system wiring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423282099.7U CN223729498U (en) | 2024-12-30 | 2024-12-30 | Symmetrical balance type direct current power supply system wiring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223729498U true CN223729498U (en) | 2025-12-26 |
Family
ID=98133710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202423282099.7U Active CN223729498U (en) | 2024-12-30 | 2024-12-30 | Symmetrical balance type direct current power supply system wiring structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223729498U (en) |
-
2024
- 2024-12-30 CN CN202423282099.7U patent/CN223729498U/en active Active
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