An internally modular marine high pressure tank

Abstract

The utility model discloses a modularization's marine high pressure box in inside, including high pressure box body, be provided with main control panel, power module, high pressure start -stop board, charge -discharge high pressure loop and PCB adapter board in high pressure box body, PCB adapter board has integrated power circuit, control circuit and communication circuit, and is provided with the interface who is connected with main control panel, power module, high pressure start -stop board, charge -discharge high pressure loop, domain management box, battery pack and cluster level fire control system. The utility model discloses by with high pressure box inside original dispersion arrangement's power circuit, control circuit, communication circuit etc. are integrated to PCB adapter board, has solved the problem of traditional high pressure box inside wire harness disorder fundamentally, is convenient for large -scale production and delivery, and the operation and maintenance work of later period.

Description

Technical Field

[0001] This utility model relates to the field of marine battery technology, specifically to an internally modular marine high-voltage box. Background Technology

[0002] Currently, most commercial ships rely primarily on heavy fuel oil as fuel, and their electrical systems also depend mainly on the combustion of heavy fuel oil for power. However, the combustion of heavy fuel oil produces pollutants such as aromatic cyclic chemicals and carbon dioxide, which pose significant risks to the environment and human health. Furthermore, heavy fuel oil is viscous and non-volatile, meaning that leaks on ships would severely threaten the marine environment. Considering these factors, and in order to conserve resources, protect the environment, and promote sustainable development, new energy ships are increasingly being widely adopted. For example, ships powered by batteries typically use high-performance batteries, such as lithium-ion or nickel-metal hydride batteries, to provide electricity. Compared to traditional fuel-powered ships, battery-powered ships offer advantages such as zero emissions, low noise, and low energy consumption, making them a more environmentally friendly and energy-efficient type of vessel.

[0003] With the development of ship electrification, the scale of marine battery systems is constantly expanding, and the requirements for battery management are also increasing. In existing marine battery management systems, the high-voltage box in the battery cluster is the core control component, which usually contains a variety of circuits, such as power lines, control lines, and communication lines. These circuits are mostly distributed, resulting in messy wiring harnesses inside the high-voltage box. This not only easily causes signal interference and increases potential sources of failure, but also makes it inconvenient for large-scale production, delivery, and subsequent operation and maintenance, affecting the stability and reliability of the entire marine battery management system. Utility Model Content

[0004] In order to overcome the problems of signal interference, multiple fault sources, and inconvenience in production and maintenance caused by the messy internal wiring harness of the marine high-voltage box in the prior art, this utility model provides an internally modular marine high-voltage box.

[0005] The technical solution of this utility model is as follows:

[0006] A modular marine high-voltage box includes a high-voltage box body. The high-voltage box body houses a main control board, a power module, a high-voltage start / stop board, a charging / discharging high-voltage circuit, and a PCB adapter board. The PCB adapter board integrates power lines, control lines, and communication lines, and is provided with interfaces for connecting to the main control board, the power module, the high-voltage start / stop board, the charging / discharging high-voltage circuit, the domain management box, the battery pack, and the cluster-level fire protection system.

[0007] As a preferred embodiment of this utility model, the power supply line includes a first power supply sub-line and a second power supply sub-line. The input terminal of the first power supply sub-line is connected to the power output terminal of the domain management box, and the output terminal of the first power supply sub-line is connected to the input terminal of the high-voltage start-stop board. The input terminal of the second power supply sub-line is connected to the output terminal of the power module, and the output terminal of the second power supply sub-line is connected to the power terminal of the main control board, the power terminal of the battery pack, and the power terminal of the cluster-level fire protection system, respectively.

[0008] As a preferred embodiment of this utility model, the second power supply sub-circuit is provided with a power fault detection relay KM7, and the control terminal of the power fault detection relay KM7 is connected to the main control board.

[0009] In a preferred embodiment of this utility model, the positive input terminal of the power module is connected to the positive terminal of the battery pack, the negative input terminal of the power module is connected to the negative terminal of the battery pack through the on / off terminal of the high-voltage start / stop board, the positive input terminal of the charging / discharging high-voltage circuit is connected to the positive terminal of the battery pack, the negative input terminal of the charging / discharging high-voltage circuit is connected to the negative terminal of the battery pack, and the output terminal of the charging / discharging high-voltage circuit is connected to the load.

[0010] As a preferred embodiment of this utility model, a high-voltage interlock device is also provided inside the high-voltage box body, and the high-voltage interlock device is connected in series in the charging and discharging high-voltage circuit;

[0011] The PCB adapter board integrates an HVIL detection circuit. The input end of the HVIL detection circuit is connected to the detection end of the high-voltage interlock device, and the output end of the HVIL detection circuit is connected to the main control board.

[0012] In a preferred embodiment of this utility model, the control circuit includes a discharge circuit, a charging circuit, a total negative circuit, and a pre-charge circuit. The main control board is connected to the control terminal of the discharge relay KM1 of the charging and discharging high-voltage circuit through the discharge circuit. The main control board is connected to the control terminal of the charging relay KM2 of the charging and discharging high-voltage circuit through the charging circuit. The main control board is connected to the control terminal of the total negative relay KM3 of the charging and discharging high-voltage circuit through the total negative circuit. The main control board is connected to the control terminal of the pre-charge relay KM4 of the charging and discharging high-voltage circuit through the pre-charge circuit.

[0013] As a preferred embodiment of this utility model, the control circuit further includes a maintenance circuit and a fuse circuit. The main control board is connected to the control terminal of the maintenance switch MSD of the charging and discharging high voltage circuit through the maintenance circuit, and the main control board is connected to the control terminal of the fire protection system through the fuse circuit.

[0014] As a preferred embodiment of this utility model, the control circuit also includes a fire protection circuit, and the main control board is connected to the fire cylinder solenoid valve and cooling fan of the cluster-level fire protection system through the fire protection circuit.

[0015] In a preferred embodiment of this utility model, the main control board is connected and communicates with the domain management box, the battery pack and the cluster-level fire protection system through the communication line.

[0016] As a preferred embodiment of this utility model, the PCB adapter board also integrates an emergency stop circuit. The input end of the emergency stop circuit is connected to the emergency stop control terminal of the domain management box, and the output end of the emergency stop circuit is connected to the main control board.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model provides an internally modular marine high-voltage box. By integrating the original power lines, control lines, and communication lines inside the high-voltage box onto a PCB adapter board, it significantly reduces the number of internal wiring harnesses, lowers the risk of signal interference caused by messy wiring harnesses, reduces potential sources of failure at wiring harness connection points, and improves system stability. At the same time, the master control adapter board also provides standardized interfaces for connecting to the main control board, power module, high-voltage start / stop board, charging and discharging high-voltage circuit, domain management box, battery pack, and cluster-level fire protection system. This simplifies the connection process between various components, making the connection of the high-voltage box more standardized and convenient, facilitating large-scale production and delivery, as well as subsequent operation and maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural block diagram of an internally modular marine high-pressure box according to one embodiment of the present utility model;

[0021] Figure 2 This is an electrical schematic diagram showing the connection between the power supply line and emergency stop line of the PCB adapter board and the corresponding module in one embodiment of this utility model.

[0022] Figure 3 This is an electrical schematic diagram showing the connection between the control circuit of the PCB adapter board and the corresponding module in one embodiment of the present invention;

[0023] Figure 4This is an electrical schematic diagram showing the connection between the communication lines of the PCB adapter board and the corresponding modules in one embodiment of the present invention.

[0024] Figure 5 This is an electrical schematic diagram showing the connection between the HVIL detection circuit of the PCB adapter board and the corresponding module in one embodiment of the present invention.

[0025] In the diagram,

[0026] 1. High-voltage box body; 2. Main control board; 3. Power module; 4. High-voltage start / stop board; 5. Charging / discharging high-voltage circuit; 6. PCB adapter board; 61. Power supply line; 611. First power supply sub-line; 612. Second power supply sub-line; 62. Control line; 621. Discharge line; 622. Charging line; 623. Main negative line; 624. Pre-charge line; 625. Maintenance line; 626. Fuse line; 627. Fire protection line; 63. Communication line; 64. HVIL detection line; 65. Emergency stop line; 7. Domain management box; 8. Battery pack; 9. Cluster-level fire protection system; 10. High-voltage interlock device. Detailed Implementation

[0027] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It is also declared that the embodiments described below are only for explaining this utility model and are not intended to limit this utility model.

[0028] It should be noted that the terms "installation", "setup", "connection", and "fixation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components, unless otherwise explicitly defined.

[0029] Please see Figures 1 to 4This utility model provides an internally modular marine high-voltage box, including a high-voltage box body 1. The high-voltage box body 1 is equipped with a main control board 2, a power module 3, a high-voltage start / stop board 4, a charging / discharging high-voltage circuit 5, and a PCB adapter board 6. The positive input terminal of the power module 3 is connected to the positive terminal of the battery pack 8, and the negative input terminal of the power module 3 is connected to the negative terminal of the battery pack 8 through the on / off terminal of the high-voltage start / stop board 4. The positive input terminal of the charging / discharging high-voltage circuit 5 is connected to the positive terminal of the battery pack 8, the negative input terminal of the charging / discharging high-voltage circuit 5 is connected to the negative terminal of the battery pack 8, and the output terminal of the charging / discharging high-voltage circuit 5 is connected to the load.

[0030] The main control board 2, acting as the brain of the high-voltage box, transmits the voltage, temperature, and other status data of the battery pack 8 to the domain management box 7 and sends and receives instructions from the domain management box 7. This enables the high-voltage box to respond promptly based on the working status of the battery pack 8, achieving precise control of the battery system and ensuring its safe and stable operation.

[0031] The power supply module 3 is used to provide a stable power supply to the various modules inside the high voltage box 1, ensuring that each electronic component works normally under the rated voltage. It is the energy foundation for ensuring the realization of the core functions of the high voltage box and avoiding control failure or data transmission abnormalities caused by unstable power supply.

[0032] The high-voltage start / stop board 4 is used to precisely control the connection between the battery pack 8 and the power module 3 based on the high-voltage start signal from the domain management box 7, so as to realize flexible control of the power supply to the battery system. When needed, the power supply can be turned on in time to provide power for the ship's operation, and when not needed, the power supply can be turned off to avoid unnecessary energy consumption and potential safety risks.

[0033] The charging and discharging high-voltage circuit 5 is used to connect the battery pack 8 to the load, realize the charging and discharging function of the battery pack 8, and can safely and efficiently transmit electrical energy. It ensures that electrical energy can be quickly and stably input into the battery pack 8 during the charging process and provide sufficient power to the ship's load during the discharging process, so as to ensure the normal navigation of the ship and the normal operation of various equipment.

[0034] The PCB adapter board 6 integrates power lines 61, control lines 62, and communication lines 63, significantly reducing the number of internal wiring harnesses in the high-voltage box, lowering the risk of signal interference caused by messy wiring harnesses, reducing potential sources of failure at wiring harness connection points, and improving system stability. The PCB adapter board 6 also has interfaces for connecting to the main control board 2, power module 3, high-voltage start / stop board 4, charging and discharging high-voltage circuit 5, domain management box 7, battery pack 8, and cluster-level fire protection system 9, simplifying the connection process between various components, making the connection of the high-voltage box more standardized and convenient, and facilitating large-scale production and delivery, as well as subsequent operation and maintenance.

[0035] Please see Figure 2In one embodiment, the power line 61 includes a first power sub-line 611 and a second power sub-line 612. The input terminal of the first power sub-line 611 is connected to the power output terminal of the domain management box 7, which can transmit the high-voltage start signal output by the domain management box 7 to the high-voltage start-stop board 4, so that the high-voltage start-stop board 4 can turn on or off the connection between the battery pack 8 and the power module 3 according to the high-voltage start signal. The output terminal of the first power sub-line 611 is connected to the input terminal of the high-voltage start-stop board 4, and the input terminal of the second power sub-line 612 is connected to the output terminal of the power module 3. The output terminal of the second power sub-line 612 is connected to the power terminal of the main control board 2, the power terminal of the battery pack 8, and the power terminal of the cluster-level fire protection system 9, respectively, to ensure that these components receive a stable power supply, so that they can work normally and maintain the stable operation of the high-voltage box and the entire battery system.

[0036] Please see Figure 2 Furthermore, the second power supply sub-line 612 is equipped with a power fault detection relay KM7, the control terminal of which is connected to the main control board 2. The power fault detection relay KM7 can monitor the status of the second power supply sub-line 612 in real time. When a fault such as overcurrent or short circuit occurs in the second power supply sub-line 612, the main control board 2 can detect the fault by detecting the status change of the relay KM7, promptly cutting off the power supply or issuing an alarm signal to prevent the fault from escalating and protecting components such as the main control board 2 and battery pack 8 from damage, thereby improving the safety and reliability of the high-voltage box power system.

[0037] Please see Figure 1 , Figure 5 In one embodiment, a high-voltage interlock device 10 is also installed inside the high-voltage box body 1, and the high-voltage interlock device 10 is connected in series in the charging and discharging high-voltage circuit 5; the PCB adapter board 6 also integrates an HVIL detection line 64, the input end of the HVIL detection line 64 is connected to the detection end of the high-voltage interlock device 10, and the output end of the HVIL detection line 64 is connected to the main control board 2. The high-voltage interlock device 10 is connected in series in the charging and discharging high-voltage circuit 5, and together with the HVIL detection line 64 on the PCB adapter board 6, the integrity of the high-voltage circuit can be monitored using a low-voltage signal. Before power-on, it can detect whether the high-voltage circuit is normal. If the circuit is incomplete, the system is prohibited from powering on to prevent accidents caused by problems such as loose connections. During operation, the high-voltage connection status can be monitored in real time. If a loose connector is detected, an alarm can be triggered in advance, giving the system time to take safety measures, such as safely disconnecting the high voltage to avoid generating an electric arc or causing electric shock to personnel. During maintenance, disconnecting the relevant components will first disconnect the HVIL circuit. The main control board 2 will cut off the high voltage after sensing the HVIL detection line 64, ensuring the safety of maintenance personnel and greatly improving the safety of the high voltage box during use and maintenance.

[0038] Please see Figure 3In one embodiment, the control circuit 62 includes a discharge circuit 621, a charging circuit 622, a total negative circuit 623, and a pre-charge circuit 624. The main control board 2 is connected to the control terminal of the discharge relay KM1 of the charging and discharging high voltage circuit 5 through the discharge circuit 621, the main control board 2 is connected to the control terminal of the charging relay KM2 of the charging and discharging high voltage circuit 5 through the charging circuit 622, the main control board 2 is connected to the control terminal of the total negative relay KM3 of the charging and discharging high voltage circuit 5 through the total negative circuit 623, and the main control board 2 is connected to the control terminal of the pre-charge relay KM4 of the charging and discharging high voltage circuit 5 through the pre-charge circuit 624. The main control board 2 controls the discharge relay KM1 via the discharge line 621 and the charging relay KM2 via the charging line 622, allowing for independent management of the discharge and charging processes of the battery pack 8. This enables flexible switching between charging and discharging modes, avoids charging and discharging conflicts, and ensures the orderly transmission of electrical energy. The main control board 2 also directly cuts off the negative terminal of the high-voltage circuit by controlling the on / off state of the main negative relay KM3. In emergencies (such as faults or overloads), this allows for rapid disconnection of the entire high-voltage system, fundamentally cutting off the energy supply and reducing safety risks. During the initial power-on phase of the high-voltage system, the main control board 2 controls the pre-charging relay KM4 via the pre-charging line 624 to slowly charge the load capacitor. This prevents damage to relays, capacitors, and other components from the high current surge during direct power-on, extending equipment lifespan and improving the safety and stability of system startup.

[0039] Please see Figure 3 Furthermore, control circuit 62 also includes maintenance circuit 625 and fuse circuit 626. Main control board 2 is connected to the control terminal of maintenance switch MSD in charging / discharging high-voltage circuit 5 via maintenance circuit 625, and to the control terminal of fire protection system via fuse circuit 626. When maintenance is required on the high-voltage box or battery system, main control board 2 can remotely control maintenance switch MSD to disconnect via maintenance circuit 625, forcibly cutting off the high-voltage circuit and ensuring that maintenance personnel can work in an environment without high-voltage risks. At the same time, the status signal of maintenance switch MSD can be fed back to main control board 2 to avoid safety accidents caused by misoperation. When extreme faults such as overcurrent or short circuit occur in charging / discharging high-voltage circuit 5, causing the fuse to trip, main control board 2 can quickly sense the fault signal via fuse circuit 626 and trigger fire protection system warning or protection measures (such as cutting off high voltage or starting cooling) to prevent the fault from spreading and causing serious consequences such as fire, thus improving the fault tolerance capability of the system.

[0040] Please see Figure 3Furthermore, control line 62 also includes fire protection line 627. The main control board 2 is connected to the fire cylinder solenoid valve and cooling fan of the cluster-level fire protection system 9 via fire protection line 627. When the battery pack 8 is detected to have abnormal temperature, smoke, or open flame, or other fire hazards, the fire cylinder solenoid valve can be triggered immediately to release the extinguishing medium. At the same time, the cooling fan is activated to enhance heat dissipation, forming a dual protection of fire extinguishing and cooling, and quickly curbing the spread of fire.

[0041] Please see Figure 4 In one embodiment, the main control board 2 communicates with the domain management box 7, battery pack 8, and cluster-level fire suppression system 9 via communication line 63. Communication line 63 provides a standardized data transmission channel for each device. The main control board 2 can receive commands from the domain management box 7, status data from the battery pack 8, and the operating status of the cluster-level fire suppression system 9 in real time, and transmit its own and the battery pack 8's status data to the domain management box 7. This enables centralized collection and analysis of the entire battery system data chain, providing data support for system optimization and scheduling. By integrating communication line 63 onto the PCB adapter board 6, the traditional distributed wiring harness connections are replaced, reducing the physical contact points and electromagnetic interference sources of communication line 63, ensuring data transmission stability. Simultaneously, standardized communication interfaces (such as CAN, RS485, etc.) facilitate future expansion or device replacement, reducing the risk of failures due to compatibility issues and improving system maintainability.

[0042] Please see Figure 2 In one embodiment, the PCB adapter board 6 also integrates an emergency stop line 65. The input of the emergency stop line 65 is connected to the emergency stop control terminal of the domain management box 7, and the output of the emergency stop line 65 is connected to the main control board 2. When the domain management box 7 detects a major safety hazard, it can send a forced emergency stop signal to the main control board 2 through the emergency stop line 65. The main control board 2 immediately triggers the high-voltage circuit to be cut off (e.g., controlling the main negative relay KM3 to disconnect), stops the charging and discharging operation, and activates the fire protection system to achieve millisecond-level emergency response, minimizing the consequences of an accident. The emergency stop line 65 achieves standardized wiring through the PCB adapter board 6, clarifying the emergency signal transmission path between the domain management box 7 and the main control board 2, avoiding the delay or false triggering of emergency stop signals caused by messy traditional wiring harnesses; at the same time, the standardized interface design facilitates rapid testing of the connectivity of the emergency stop line 65 in large-scale production and later operation and maintenance, ensuring the reliability of the emergency function.

[0043] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0044] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other occasions without modification, are all within the protection scope of the present utility model.

Claims

1. A modular marine high-pressure box, characterized in that, The system includes a high-voltage box body, which houses a main control board, a power module, a high-voltage start / stop board, a charging / discharging high-voltage circuit, and a PCB adapter board. The PCB adapter board integrates power lines, control lines, and communication lines, and has interfaces for connecting to the main control board, the power module, the high-voltage start / stop board, the charging / discharging high-voltage circuit, the domain management box, the battery pack, and the cluster-level fire protection system.

2. The internally modular marine high-pressure box according to claim 1, characterized in that, The power supply line includes a first power sub-line and a second power sub-line. The input terminal of the first power sub-line is connected to the power output terminal of the domain management box, and the output terminal of the first power sub-line is connected to the input terminal of the high-voltage start-stop board. The input terminal of the second power sub-line is connected to the output terminal of the power module, and the output terminal of the second power sub-line is connected to the power terminal of the main control board, the power terminal of the battery pack, and the power terminal of the cluster-level fire protection system, respectively.

3. The internally modular marine high-pressure box according to claim 2, characterized in that, The second power supply sub-circuit is equipped with a power fault detection relay KM7, and the control terminal of the power fault detection relay KM7 is connected to the main control board.

4. The internally modular marine high-pressure box according to claim 2, characterized in that, The positive input terminal of the power module is connected to the positive terminal of the battery pack, and the negative input terminal of the power module is connected to the negative terminal of the battery pack through the on / off terminal of the high-voltage start / stop board. The positive input terminal of the charging / discharging high-voltage circuit is connected to the positive terminal of the battery pack, and the negative input terminal of the charging / discharging high-voltage circuit is connected to the negative terminal of the battery pack. The output terminal of the charging / discharging high-voltage circuit is connected to the load.

5. The internally modular marine high-pressure box according to claim 1, characterized in that, The high-voltage box body is also equipped with a high-voltage interlock device, which is connected in series in the charging and discharging high-voltage circuit. The PCB adapter board integrates an HVIL detection circuit. The input end of the HVIL detection circuit is connected to the detection end of the high-voltage interlock device, and the output end of the HVIL detection circuit is connected to the main control board.

6. The internally modular marine high-pressure box according to claim 1, characterized in that, The control circuit includes a discharge circuit, a charging circuit, a total negative circuit, and a pre-charge circuit. The main control board is connected to the control terminal of the discharge relay KM1 of the charging and discharging high-voltage circuit through the discharge circuit. The main control board is connected to the control terminal of the charging relay KM2 of the charging and discharging high-voltage circuit through the charging circuit through the charging circuit. The main control board is connected to the control terminal of the total negative relay KM3 of the charging and discharging high-voltage circuit through the total negative circuit. The main control board is connected to the control terminal of the pre-charge relay KM4 of the charging and discharging high-voltage circuit through the pre-charge circuit.

7. The internally modular marine high-pressure box according to claim 6, characterized in that, The control circuit also includes a maintenance circuit and a fuse circuit. The main control board is connected to the control terminal of the maintenance switch MSD of the charging and discharging high voltage circuit through the maintenance circuit, and the main control board is connected to the control terminal of the fire protection system through the fuse circuit.

8. The internally modular marine high-pressure box according to claim 6, characterized in that, The control circuit also includes a fire protection circuit, and the main control board is connected to the fire cylinder solenoid valve and cooling fan of the cluster-level fire protection system through the fire protection circuit.

9. The internally modular marine high-pressure box according to claim 1, characterized in that, The main control board is connected and communicates with the domain management box, the battery pack, and the cluster-level fire protection system via the communication line.

10. The internally modular marine high-pressure box according to claim 1, characterized in that, The PCB adapter board also integrates an emergency stop circuit. The input end of the emergency stop circuit is connected to the emergency stop control terminal of the domain management box, and the output end of the emergency stop circuit is connected to the main control board.

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