Battery voltage data acquisition device

Abstract

The application belongs to the technical field of substation DC, and particularly relates to a battery voltage data acquisition device. The application comprises an embedded host module, a voltage acquisition module, a communication module, a battery module and a display module; the acquisition module, the communication module and the display module are connected with the embedded host module respectively; the battery module is connected with the communication module; the voltage acquisition module comprises at least one new type of B54 acquisition module; each new type of B54 acquisition module is provided with a voltage acquisition terminal, used for connecting a battery group on a single layer or single group battery rack and acquiring the voltage signal of each battery in the battery group; the number of the new type of B54 acquisition module is configured according to the voltage level of the DC system. The application does not need multiple parallel connections, and does not need to cross the battery rack for wiring connection between the modules, so that the construction is simple, the wire cost is low, the failure rate is low, the installation is easy, and the maintenance cost is low.

Description

Technical Field

[0001] This invention belongs to the field of DC technology for substations, specifically relating to a battery voltage data acquisition device. Background Technology

[0002] Substation DC systems contain various types of batteries, which play a crucial role in the DC system. When AC power fails, DC power is essential, providing a stable 220V DC power supply to other important systems and ensuring continuous power supply to critical equipment such as monitoring, measurement and control, and back-end systems within the substation. In fact, it is the batteries in the DC system that maintain power supply; therefore, battery monitoring is of paramount importance.

[0003] Existing battery voltage data acquisition devices mostly use B24 modules, with each module capable of collecting voltage data from only 24 batteries. With the promotion of integrated power supplies by the State Grid, battery capacity requirements have increased to over 400Ah, and battery rack structures commonly employ double-layer or multi-group configurations, leading to a significant increase in the number of batteries. Existing battery voltage data acquisition devices require multiple B24 modules connected in parallel; for example, a 220V system requires 5 B24 modules, and a 110V system requires 3. Furthermore, the modules need to be connected across the battery rack via wiring, which not only complicates construction and increases wiring costs but also raises the failure rate due to redundancy. In addition, wiring between battery rack layers or groups requires additional conduit, further increasing installation difficulty and maintenance costs. These problems severely restrict the reliability and economy of DC system monitoring. Therefore, there is an urgent need for a technical solution that simplifies wiring layout, reduces the number of modules, and improves acquisition efficiency to meet the monitoring needs of large-capacity battery packs. Summary of the Invention

[0004] This invention addresses the problems of existing battery voltage data acquisition devices, which require multiple units to be connected in parallel and inter-module wiring across battery racks, resulting in complex construction, high wiring costs, high failure rates, and increased installation difficulty and maintenance costs. The proposed battery voltage data acquisition device comprises: an embedded host module, a voltage acquisition module, a communication module, a battery module, and a display module; the voltage acquisition module, communication module, and display module are respectively connected to the embedded host module; the battery module is connected to the communication module.

[0005] The embedded host module includes: an embedded monitoring host for receiving and displaying battery voltage data;

[0006] The battery module includes a battery pack;

[0007] The voltage acquisition module includes at least one novel board B54 acquisition module. Each novel board B54 acquisition module is equipped with a voltage acquisition terminal for connecting to a battery pack on a single layer or a single battery rack and acquiring the voltage signal of each battery in the battery pack.

[0008] The communication module includes an RS485 communication interface, which is set on the new board B54 acquisition module. It transmits the voltage signal of each battery in the battery pack acquired by the voltage acquisition module to the embedded monitoring host through a serial communication line.

[0009] The number of the new type of board B54 acquisition modules is configured according to the DC system voltage level.

[0010] According to the battery voltage data acquisition device described above, the DC system voltage level is 220V, and two new type B54 acquisition modules are configured. Each new type B54 acquisition module is set on two sets of battery racks, and each set of battery racks contains 52 batteries. The new type B54 acquisition modules are connected to the embedded monitoring host in parallel through the RS485 communication interface.

[0011] According to the battery voltage data acquisition device described above, the new type B54 acquisition module includes: a first new type B54 acquisition module and a second new type B54 acquisition module.

[0012] The battery pack includes a first battery pack and a second battery pack; the first battery pack includes 52 interconnected batteries: the first battery to the fifty-second battery;

[0013] The second battery pack consists of 52 interconnected batteries: the fifty-third battery to the one hundred and fourth battery;

[0014] The first new type board B54 acquisition module and the second new type board B54 acquisition module are respectively connected to the RS485 communication interface; the RS485 communication interface is connected to the embedded monitoring host; the display module is connected to the embedded monitoring host.

[0015] According to the battery voltage data acquisition device described above, the voltage acquisition terminals of the new type of board B54 acquisition module adopt an anti-misinsertion structure.

[0016] According to the battery voltage data acquisition device described above, the RS485 communication interface supports the Modbus-RTU protocol.

[0017] According to the battery voltage data acquisition device described above, the battery rack has a double-layer structure, with a new type of board B54 acquisition module installed on each layer.

[0018] According to the battery voltage data acquisition device described above, the embedded monitoring host has a built-in alarm module that triggers an audible and visual alarm when an abnormal battery voltage is detected in the battery pack.

[0019] According to the battery voltage data acquisition device described above, the power supply terminals of the new board B54 acquisition module support a wide voltage input of DC 80V-300V.

[0020] According to the battery voltage data acquisition device described above, the embedded monitoring host is connected to the upper-level monitoring system via an Ethernet interface to realize remote data transmission.

[0021] According to the battery voltage data acquisition device described above, the DC system voltage level is 110V, and one new type B54 acquisition module is configured. Each new type B54 acquisition module is set on a battery rack of a battery pack, and the battery rack contains 52 batteries. The new type B54 acquisition modules are connected to the embedded monitoring host in parallel through the RS485 communication interface.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. This invention employs a novel B54 acquisition module, one of which can acquire the voltage of 54 batteries, significantly reducing the number of B54 acquisition modules required. In a 220V system, the number of B54 acquisition modules is reduced from 5 to 2; in a 110V system, it is reduced from 3 to 1, directly reducing hardware costs and failure rate.

[0024] 2. The novel B54 acquisition module of this invention is installed within the battery rack layer or group, eliminating the need for cross-layer or cross-rack wiring, thus eliminating redundant lines, simplifying the construction process, and reducing wiring consumption. The RS485 communication interface enables centralized connection between the novel B54 acquisition module and the embedded monitoring host, avoiding cross-interference from traditional multi-line connections and improving data transmission stability.

[0025] 3. The present invention, when configured with the new B54 acquisition module for double-layer or double-group battery racks, can fully cover the acquisition needs of single-layer or single-group batteries, and completely solve the original problem of cross-rack wiring.

[0026] 4. Furthermore, the reduced number of B54 acquisition modules in this invention also lowers system maintenance complexity and improves overall reliability. This is achieved through optimized line structure and module configuration.

[0027] This invention significantly reduces construction costs, material costs, and long-term operation and maintenance costs while ensuring monitoring accuracy, and is applicable to battery voltage monitoring scenarios in various substation DC systems. Attached Figure Description

[0028] Figure 1 This is a simplified structural diagram of the battery voltage data acquisition device of the present invention.

[0029] Figure 2 This is a schematic diagram of the structure of a battery voltage data acquisition device in the prior art.

[0030] Figure 3 This is a schematic diagram of the battery voltage data acquisition device of the present invention.

[0031] Figure 4 This is a simplified circuit diagram of the first novel board B54 acquisition module of the battery voltage data acquisition device of the present invention.

[0032] In the diagram: 1 to 104 - first to 104th batteries; 200 - voltage acquisition module.

[0033] 210 - New type board B54 acquisition module, 211 - First new type board B54 acquisition module, 212 - Second new type board B54 acquisition module, 300 - Communication module, 310 - RS485 communication interface, 400 - Battery module, 411 - First battery pack, 412 - Second battery pack, 410 - Battery pack, 500 - Display module, 600 - Embedded host module, 610 - Embedded monitoring host, 410 - Battery pack, U1 - Microcontroller, 1#AC30 to 27#AC30 - First circuit breaker to 27th circuit breaker, PO1\BT1 to PO54\BT54 - First battery interface to 54th battery interface, B1 to B52 - First battery to 52nd battery, MAXRS - Main communication transceiver chip, 1#RS - First communication transceiver chip, 2#RS - Second communication transceiver chip, DC - Power supply chip. Detailed Implementation

[0034] Preferred Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0036] like Figure 1 , Figure 3 As shown: A battery voltage data acquisition device includes: an embedded host module 600, a voltage acquisition module 200, a communication module 300, a battery module 400, and a display module 500; the voltage acquisition module 200, the communication module 300, and the display module 500 are respectively connected to the embedded host module 600; the battery module 400 is connected to the communication module 300.

[0037] Embedded host module 600 includes: embedded monitoring host 610, for receiving and displaying battery voltage data;

[0038] Battery module 400 includes battery pack 410;

[0039] The voltage acquisition module 200 includes at least one novel board B54 acquisition module 210. Each novel board B54 acquisition module 210 is equipped with a voltage acquisition terminal for connecting to a battery pack on a single layer or a single battery rack and for acquiring the voltage signal of each battery in the battery pack 410.

[0040] The communication module 300 includes an RS485 communication interface 310, which is set on the new type board B54 acquisition module 210. It transmits the voltage signal of each battery in the battery pack 410 acquired by the voltage acquisition module 200 to the embedded monitoring host 610 through a serial communication line.

[0041] The number of the new type of board B54 acquisition modules 210 is configured according to the DC system voltage level.

[0042] The DC system voltage level is 220V, and it is equipped with two new type B54 acquisition modules 210. Each new type B54 acquisition module 210 is set on the battery rack of two sets of battery packs 410, and each set of battery packs 410 contains 52 batteries. The new type B54 acquisition modules 210 are connected to the embedded monitoring host 610 after being connected in parallel through the RS485 communication interface 310.

[0043] The new type board B54 acquisition module 210 includes: a first new type board B54 acquisition module 211 and a second new type board B54 acquisition module 212;

[0044] Battery pack 410 includes a first battery pack 411 and a second battery pack 412; the first battery pack 411 includes 52 batteries connected to each other: first battery 1 to fifty-second battery 52;

[0045] The second battery pack 411 includes 52 interconnected batteries: the fifty-third battery 53 to the one hundred and fourth battery 104.

[0046] The first new type board B54 acquisition module 211 and the second new type board B54 acquisition module 212 are respectively connected to the RS485 communication interface 310; the RS485 communication interface 310 is connected to the embedded monitoring host 610; the display module 500 is connected to the embedded monitoring host 610.

[0047] The voltage acquisition terminals of the new board B54 acquisition module 210 adopt a structure to prevent mis-insertion.

[0048] The RS485 communication interface 310 supports the Modbus-RTU protocol.

[0049] The battery rack has a double-layer structure, with a new type of board B54 acquisition module 210 installed on each layer.

[0050] The embedded monitoring host 610 has a built-in alarm module that triggers an audible and visual alarm when an abnormal battery voltage is detected in the battery pack 410.

[0051] The power supply terminals of the new board B54 acquisition module 210 support a wide voltage input of DC 80V-300V.

[0052] The embedded monitoring host 610 connects to the upper-level monitoring system via an Ethernet interface to achieve remote data transmission.

[0053] The DC system voltage level is 110V, and it is equipped with a new type of board B54 acquisition module 210, such as... Figure 4 As shown: Each novel board B54 acquisition module 210 is respectively mounted on a battery rack of a battery pack 410, and the battery rack of the battery pack 410 contains 52 batteries; the novel board B54 acquisition module 210 is connected to the embedded monitoring host 610 in parallel through the RS485 communication interface 310. The second novel board B54 acquisition module has the same circuit structure as the first novel board B54 acquisition module.

[0054] The specific embodiments of this utility model are as follows:

[0055] The device comprises an embedded monitoring host 610, a new type B54 data acquisition module 210, and an RS485 communication interface 310. The embedded monitoring host 610 uses an industrial-grade ARM processor, is equipped with an LCD display and touch input functionality, and has a built-in data storage unit and alarm module. The new type B54 data acquisition module 210 is an independent unit with 54 pairs of voltage acquisition terminals, each pair corresponding to the positive and negative terminals of a battery, and is configured with an RS485 communication interface 310 and a power interface.

[0056] Module Installation: Taking a 220V DC system as an example, the system requires 104 batteries, installed in two battery racks, with 52 batteries in each rack. One new type B54 acquisition module 210 is installed on each battery rack, fixed to the side wall of the rack. The first 52 of its 54 acquisition terminals are connected to the batteries in that rack, with the remaining 2 terminals reserved. The power terminals of the new type B54 acquisition module 210 are connected to the DC 220V bus of the DC system. The RS485 communication interface 310 is connected to the embedded monitoring host 610 via shielded twisted-pair cable in parallel. For a 110V system, a single battery rack is used to install 52 batteries, configured with one new type B54 acquisition module 210, with the same terminal connection method.

[0057] Communication Configuration: All RS485 communication interfaces 310 of the new board B54 acquisition modules 210 are connected via a bus topology, with a communication rate set to 9600bps, data format 8N1, and support for the Modbus-RTU protocol. The embedded monitoring host 610 acts as the master station, polling each new board B54 acquisition module 210 by address, acquiring data, parsing it, and displaying the voltage value of each battery.

[0058] Circuit optimization: Compared to the traditional B24 module, the new board B54 acquisition module 210 eliminates the need for wiring across battery racks or between layers. Figure 3 Taking the dual-battery rack shown as an example, after each rack is independently equipped with the new type B54 acquisition module 210, only one RS485 bus needs to be led out from the new type B54 acquisition module 210 to the host, completely eliminating... Figure 2 The central base has 5 sets of B24 modules: 1#B24, 2#B24, 3#B24, 4#B24, and 5#B24, which have complex conduits and cross-connection lines.

[0059] Functionality: The embedded monitoring host 610 displays the real-time voltage of each battery, using color to distinguish between normal (green), warning (yellow), and fault (red). When a battery voltage exceeds a set threshold, the embedded monitoring host 610 triggers an audible and visual alarm and records the event. Historical data is stored in the built-in FLASH memory and can be exported to a USB flash drive or uploaded to the station control system via Ethernet.

[0060] Advantage verification: In 220V system applications, such as Figure 2 As shown: what used to require 5 B24 modules and a large number of cross-branch lines now only requires 2 new type B54 acquisition modules 210, reducing costs by 60%, wiring by 70%, and construction time by 50%. Testing has shown that the system failure rate has decreased from an average of 3 times per year to 0.5 times, significantly improving reliability.

[0061] In summary, by optimizing module capacity and communication architecture, this invention achieves efficient, economical, and reliable operation of battery voltage acquisition, and is suitable for upgrading and retrofitting DC systems in various substations.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A battery voltage data acquisition device, characterized in that, include: An embedded host module (600), a voltage acquisition module (200), a communication module (300), a battery module (400), and a display module (500) are included; the voltage acquisition module (200), the communication module (300), and the display module (500) are respectively connected to the embedded host module (600); the battery module (400) is connected to the communication module (300). The embedded host module (600) includes: an embedded monitoring host (610) for receiving and displaying battery voltage data; The battery module (400) includes a battery pack (410); The voltage acquisition module (200) includes at least one novel board B54 acquisition module (210), each novel board B54 acquisition module (210) is equipped with a voltage acquisition terminal for connecting to a battery pack on a single layer or a single battery rack and acquiring the voltage signal of each battery in the battery pack (410). The communication module (300) includes an RS485 communication interface (310), which is set on the new type board B54 acquisition module (210) and transmits the voltage signal of each battery in the battery pack (410) acquired by the voltage acquisition module (200) to the embedded monitoring host (610) through a serial communication line. The number of the new type of board B54 acquisition module (210) is configured according to the DC system voltage level.

2. The battery voltage data acquisition device according to claim 1, characterized in that: The DC system voltage level is 220V, and it is equipped with two new type board B54 acquisition modules (210). Each new type board B54 acquisition module (210) is set on the battery rack of two sets of battery packs (410). Each set of battery packs (410) contains 52 batteries. The new board B54 acquisition module (210) is connected to the embedded monitoring host (610) in parallel through the RS485 communication interface (310).

3. The battery voltage data acquisition device according to claim 2, characterized in that: The new type board B54 acquisition module (210) includes: a first new type board B54 acquisition module (211) and a second new type board B54 acquisition module (212); The battery pack (410) includes a first battery pack (411) and a second battery pack (412); the first battery pack (411) includes 52 interconnected batteries: the first battery (1) to the fifty-second battery (52); The second battery pack (412) includes 52 interconnected batteries: the fifty-third battery (53) to the one hundred and fourth battery (104); The first new type board B54 acquisition module (211) and the second new type board B54 acquisition module (212) are respectively connected to the RS485 communication interface (310); the RS485 communication interface (310) is connected to the embedded monitoring host (610); the display module (500) is connected to the embedded monitoring host (610).

4. The battery voltage data acquisition device according to claim 3, characterized in that, The voltage acquisition terminals of the new type of board B54 acquisition module (210) adopt an anti-misinsertion structure.

5. The battery voltage data acquisition device according to claim 4, characterized in that, The RS485 communication interface (310) supports the Modbus-RTU protocol.

6. The battery voltage data acquisition device according to claim 2, characterized in that, The battery rack has a double-layer structure, with a new type of board B54 acquisition module (210) installed on each layer.

7. The battery voltage data acquisition device according to claim 5 or 6, characterized in that, The embedded monitoring host (610) has a built-in alarm module that triggers an audible and visual alarm when an abnormal battery voltage is detected in the battery pack (410).

8. The battery voltage data acquisition device according to claim 7, characterized in that, The power supply terminals of the new board B54 acquisition module (210) support a wide voltage input of DC 80V-300V.

9. The battery voltage data acquisition device according to claim 8, characterized in that, The embedded monitoring host (610) is connected to the upper-level monitoring system via an Ethernet interface to realize remote data transmission.

10. The battery voltage data acquisition device according to claim 1, characterized in that: The DC system voltage level is 110V, and it is equipped with one new type board B54 acquisition module (210). Each new type board B54 acquisition module (210) is set on a battery rack of a battery pack (410). The battery rack of the battery pack (410) contains 52 batteries. The new board B54 acquisition module (210) is connected to the embedded monitoring host (610) in parallel through the RS485 communication interface (310).

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