A ship EMS management system power-on / off control system and a management method thereof

Abstract

The application discloses a kind of ship EMS management system power-on and power-off control system and its management method.Power-on module is included, the input end of power-on module is connected with external generator set, the output end of power-on module is connected with the input end of isolation converter, the output end of isolation converter is simultaneously connected with the power supply end of EMS self-checking module, the power supply end of BMS module and the power supply input end of remote control switching module, the signal output end of remote control switching module is connected with the signal input end of EMS self-checking module, the signal output end of EMS self-checking module is connected with the signal input end of BMS module, and the signal output end of BMS module is connected with battery pack.The input high voltage is converted into suitable low voltage by isolation converter in the application, and EMS self-checking module, BMS module and remote control switching module are stably powered, and under the cooperation of EMS self-checking module and BMS module, battery pack charging and discharging overall control is carried out, and space vector pulse width modulation is used in inverter unit, and the operation requirement of battery pack in different charging stage is adapted.

Description

Technical Field

[0001] This invention specifically relates to a power-on / off control system and management method for a ship EMS management system. Background Technology

[0002] Currently, marine power battery systems generally rely on a battery management system (BMS, independent architecture) for battery monitoring and protection. The BMS can collect parameters at various levels of the battery, estimate SOC and available power, implement alarms for abnormalities through self-testing, and perform thermal management and equalization regulation. However, this model is limited to control at the individual battery level and lacks coordination with the ship's energy management system (EMS), failing to achieve integrated charging and discharging scheduling from the perspective of the entire ship's energy. Summary of the Invention

[0003] Purpose of the invention: To provide a power-on / off control system and management method for a ship EMS management system, which solves the above-mentioned problems existing in the prior art.

[0004] Technical Solution: A power-on / off control system and management method for a ship EMS management system, comprising a power-on module, wherein the input terminal of the power-on module is connected to an external generator set, the output terminal of the power-on module is connected to the input terminal of an isolation converter, the output terminal of the isolation converter is simultaneously connected to the power supply terminal of an EMS self-test module, the power supply terminal of a BMS module, and the power supply input terminal of a remote control switching module, the signal output terminal of the remote control switching module is connected to the signal input terminal of the EMS self-test module, the signal output terminal of the EMS self-test module is connected to the signal input terminal of the BMS module, and the signal output terminal of the BMS module is connected to a battery pack.

[0005] Preferably, the BMS module includes a pre-charge unit, the signal input terminal of which is connected to the signal output terminal of the EMS self-test module, the signal output terminal of which is connected to the signal input terminal of the voltage detection unit, the signal output terminal of which is connected to the signal input terminal of the inverter unit, and the signal output terminal of the inverter unit is connected to the battery pack.

[0006] Preferably, the isolation converter includes a low-voltage isolation unit, the input of which is connected to the output of the power-on module, the output of which is connected to the input of the isolation transformer unit, the output of which is connected to the input of the high-voltage isolation unit, and the output of which is simultaneously connected to the power supply of the EMS self-test module, the BMS module, and the remote control switching module.

[0007] Preferably, the low-voltage isolation unit includes field-effect transistors G7, G8, G9, G10, G11, and G12, inductors L1, L2, and L3, capacitors C2 and C3. The emitter of field-effect transistor G7 is simultaneously connected to the collector of field-effect transistor G8, one end of inductor L3, and the input terminal of the isolation transformer unit. The collector of field-effect transistor G7 is simultaneously connected to the collectors of field-effect transistors G9 and G11, and one end of capacitor C3. The emitter of transistor 9 is simultaneously connected to the collector of transistor G10, one end of inductor L2, and the output terminal of the power-on module. The emitter of transistor G11 is simultaneously connected to the collector of transistor G12, one end of inductor L1, and the input of the isolation transformer unit. The emitter of transistor G8 is simultaneously connected to the emitters of transistor G10 and G12, the negative terminal of capacitor C2, and the other end of capacitor C3. The positive terminal of capacitor C2 is simultaneously connected to the other ends of inductors L1, L2, and L3.

[0008] Preferably, the high-voltage isolation includes a capacitor C1, field-effect transistors G1, G2, G3, G4, G5, and G6. One end of the capacitor C1 is simultaneously connected to the input terminal of the battery pack, the collector of field-effect transistor G1, the collector of field-effect transistor G3, and the collector of field-effect transistor G5. The other end of the capacitor C1 is simultaneously connected to the input terminal of the isolation transformer unit, the emitter of field-effect transistor G2, the emitter of field-effect transistor G4, and the emitter of field-effect transistor G6. The emitter of field-effect transistor G1 is simultaneously connected to the collector of field-effect transistor G2 and the input terminal of the isolation transformer unit. The emitter of field-effect transistor G3 is simultaneously connected to the collector of field-effect transistor G4 and the input terminal of the isolation transformer unit. The emitter of field-effect transistor G5 is simultaneously connected to the collector of field-effect transistor G6 and the output terminal of the isolation transformer unit.

[0009] Preferably, the isolation transformer unit adopts the TIHQ1910-600 model isolation transformer.

[0010] Preferably, the inverter unit includes field-effect transistors Q1, Q2, Q3, Q4, Q5, and Q6, resistors R1, R2, and R3, and capacitor C4. The positive terminal of capacitor C4 is simultaneously connected to the output terminal of the isolation converter, the collector of field-effect transistors Q5, Q3, and Q1. The negative terminal of capacitor C4 is simultaneously connected to the emitter of field-effect transistors Q6, Q4, and Q2. The emitter of field-effect transistor Q5 is simultaneously connected to the collector of field-effect transistor Q6 and one end of resistor R1. The other end of resistor R1 is connected to one end of resistor R2. The emitter of field-effect transistor Q3 is simultaneously connected to the other end of resistor R2, the collector of field-effect transistor Q4, and one end of resistor R3. The emitter of field-effect transistor Q1 is simultaneously connected to the other end of resistor R3 and the collector of field-effect transistor Q2.

[0011] A management method for a ship EMS management system, implemented through the aforementioned power-on / off control system of the ship EMS management system, includes the following steps:

[0012] S1. After the power-on module is powered on, the input voltage is converted into the rated voltage through the isolation converter and then the EMS self-test module, BMS module and remote control switching module are powered. At this time, the ship is switched to pure electric mode through the remote control switching module. When the mode switching is successful, the insulation status is detected by the EMS self-test module; otherwise, the power-on is terminated.

[0013] S2. When the EMS self-test module detects that the insulation status is insulation, it sends a signal to the BMS module, controls the pre-charging of the battery pack through the pre-charging unit in the BMS module, and after the battery pack pre-charging is completed, it uses the voltage detection unit to detect the voltage of the DC bus.

[0014] S3. When the DC bus voltage is at normal voltage, the inverter unit starts and charges the battery pack normally.

[0015] Preferably, the process by which the isolation converter converts the input voltage to the rated voltage is as follows:

[0016] S1.1. The voltage is connected through the low-voltage isolation unit in the isolation converter, and the low-voltage connected voltage is transmitted to the isolation transformer unit using the low-voltage isolation unit;

[0017] S1.2 After the low voltage is converted into a high voltage by the isolation transformer unit, it is sent to the high voltage isolation unit. The high voltage is then sent to the EMS self-test module, BMS module and remote control switching module to charge the battery pack.

[0018] Beneficial effects: This invention relates to a power-on / off control system and management method for a ship EMS management system. It uses an isolation converter to transform the input low voltage into a suitable high voltage, providing stable power to the EMS self-test module, BMS module, and remote control switching module. With the cooperation of the EMS self-test module and BMS module, it comprehensively controls the charging and discharging of the battery pack. Furthermore, the inverter unit in the BMS module employs space vector pulse width modulation to achieve vector switching, adapting to the operational requirements of the battery pack at different charging stages. Attached Figure Description

[0019] Figure 1 The system block of the present invention Figure 1 ;

[0020] Figure 2 The system block of the present invention Figure 2 ;

[0021] Figure 3 This is a circuit diagram of the isolation converter of the present invention;

[0022] Figure 4 This is a circuit diagram of the inverter unit of the present invention. Detailed Implementation

[0023] like Figures 1 to 4As shown, this invention provides a technical solution: a power-on / off control system for a ship EMS management system, including a power-on module. The input terminal of the power-on module is connected to an external generator set, and the output terminal of the power-on module is connected to the input terminal of an isolation converter. The output terminal of the isolation converter is simultaneously connected to the power supply terminals of an EMS self-test module, a BMS module, and a remote control switching module. The signal output terminal of the remote control switching module is connected to the signal input terminal of the EMS self-test module, the signal output terminal of the EMS self-test module is connected to the signal input terminal of the BMS module, the signal output terminal of the remote control switching module is connected to the signal input terminal of the EMS self-test module, the signal output terminal of the EMS self-test module is connected to the signal input terminal of the BMS module, and the signal output terminal of the BMS module is connected to a battery pack. The EMS self-test module adopts existing technology. The BMS module includes a pre-charge unit, which employs existing technology. The signal input terminal of the pre-charge unit is connected to the signal output terminal of the EMS self-test module. The signal output terminal of the pre-charge unit is connected to the signal input terminal of the voltage detection unit. The signal output terminal of the voltage detection unit is connected to the signal input terminal of the inverter unit. The signal output terminal of the BMS module is connected to the battery pack and other equipment on the ship. The signal output terminal of the inverter unit is connected to the battery pack. An isolation converter transforms the input low voltage into a suitable high voltage, providing stable power to the EMS self-test module, BMS module, and remote control switching module. With the cooperation of the EMS self-test module and BMS module, the charging and discharging of the battery pack is controlled in a unified manner. The inverter unit in the BMS module uses space vector pulse width modulation to achieve vector switching, adapting to the operational requirements of the battery pack at different charging stages.

[0024] In a further embodiment, such as Figure 3As shown, the low-voltage isolation unit includes field-effect transistors G7, G8, G9, G10, G11, and G12, inductors L1, L2, and L3, and capacitors C2 and C3. The emitter of field-effect transistor G7 is simultaneously connected to the collector of field-effect transistor G8, one end of inductor L3, and the input terminal of the isolation transformer unit. The collector of field-effect transistor G7 is simultaneously connected to the collectors of field-effect transistors G9 and G11, and one end of capacitor C3. The emitter of field-effect transistor G9 is simultaneously connected to the collector of field-effect transistor G10, one end of inductor L2, and the input terminal of the power-on module. At the output terminal, the emitter of the field-effect transistor G11 is simultaneously connected to the collector of the field-effect transistor G12, one end of the inductor L1, and the input of the isolation transformer unit. The emitter of the field-effect transistor G8 is simultaneously connected to the emitter of the field-effect transistor G10, the emitter of the field-effect transistor G12, the negative terminal of capacitor C2, and the other end of capacitor C3. The positive terminal of capacitor C2 is simultaneously connected to the other ends of inductors L1, L2, and L3. The high-voltage isolation includes capacitor C1, field-effect transistors G1, G2, G3, G4, G5, and G6. One end of capacitor C1 is connected to... The capacitor C1 is connected to the input terminal of the battery pack, the collector of MOSFET G1, the collector of MOSFET G3, and the collector of MOSFET G5. The other end of the capacitor C1 is simultaneously connected to the input terminal of the isolation transformer unit, the emitter of MOSFET G2, the emitter of MOSFET G4, and the emitter of MOSFET G6. The emitter of MOSFET G1 is simultaneously connected to the collector of MOSFET G2 and the input terminal of the isolation transformer unit; the emitter of MOSFET G3 is simultaneously connected to the collector of MOSFET G4 and the input terminal of the isolation transformer unit; and the emitter of MOSFET G5 is simultaneously connected to the collector of MOSFET G6 and the output terminal of the isolation transformer unit. That is, the applied voltage is... After capacitors C2 and C3 perform voltage regulation, they control the three-phase interleaved conduction of MOSFETs G7, G8, G9, G10, G11, and G12, respectively, to convert the DC voltage into a three-phase high-frequency AC voltage. With the cooperation of inductors L1, L2, and L3, a resonant circuit is formed to reduce the turn-on loss of the switching transistors. Then, by utilizing the cooperation of MOSFETs G1, G2, G3, G4, G5, and G6, the high-frequency AC voltage is restored to a high-voltage DC voltage to charge the battery pack or supply power to other equipment on the ship.

[0025] In a further embodiment, the inverter unit includes field-effect transistors Q1, Q2, Q3, Q4, Q5, and Q6, resistors R1, R2, and R3, and capacitor C4. The positive terminal of capacitor C4 is simultaneously connected to the output terminal of the isolation converter, the collector of field-effect transistor Q5, the collector of field-effect transistor Q3, and the collector of field-effect transistor Q1. The negative terminal of capacitor C4 is simultaneously connected to the emitter of field-effect transistor Q6, the emitter of field-effect transistor Q4, and the emitter of field-effect transistor Q2. The emitter of field-effect transistor Q5 is simultaneously connected to the collector of field-effect transistor Q6 and one end of resistor R1. The other end of resistor R1 is connected to one end of resistor R2. The emitter of field-effect transistor Q3 is simultaneously connected to the other end of resistor R2, the collector of field-effect transistor Q4, and one end of resistor R3. The emitter of field-effect transistor Q1 is simultaneously connected to the other end of resistor R3 and the collector of field-effect transistor Q2.

[0026] A management method for a ship EMS management system, implemented through the aforementioned power-on / off control system of the ship EMS management system, includes the following steps:

[0027] S1. After the power-on module is powered on, the input voltage is converted to the rated voltage by the isolation converter and then supplied to the EMS self-test module, BMS module, and remote control switching module. At this time, the remote control switching module switches the ship to pure electric mode. When the mode switch is successful, the insulation status is checked by the EMS self-test module; otherwise, the power-on is terminated. The process of the isolation converter converting the input voltage to the rated voltage is as follows:

[0028] S1.1. The voltage is connected through the high voltage isolation unit in the isolation converter, and the high voltage is transmitted to the isolation transformer unit using the high voltage isolation unit;

[0029] S1.2 After the high voltage input is converted to low voltage by the isolation transformer unit, it is sent to the low voltage isolation unit. The low voltage is then sent to the EMS self-test module, BMS module and remote control switching module by the low voltage isolation unit.

[0030] S2. When the EMS self-test module detects that the insulation status is insulation, it sends a signal to the BMS module, controls the pre-charging of the battery pack through the pre-charging unit in the BMS module, and uses the voltage detection unit to detect the voltage of the DC bus after the battery pack pre-charging is completed.

[0031] S3. When the DC bus voltage is at normal voltage, the inverter unit starts and charges the battery pack normally.

[0032] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the protection scope of the present invention.

Claims

1. A power-on / off control system for a ship EMS management system, characterized in that, The system includes a power-on module, whose input is connected to an external generator set, and whose output is connected to the input of an isolation converter. The output of the isolation converter is simultaneously connected to the power supply terminals of the EMS self-test module, the BMS module, and the remote control switching module. The signal output of the remote control switching module is connected to the signal input of the EMS self-test module, the signal output of the EMS self-test module is connected to the signal input of the BMS module, and the signal output of the BMS module is connected to the battery pack.

2. The power-on / off control system for a ship EMS management system according to claim 1, characterized in that, The BMS module includes a pre-charge unit, the signal input terminal of which is connected to the signal output terminal of the EMS self-test module, the signal output terminal of which is connected to the signal input terminal of the voltage detection unit, the signal output terminal of which is connected to the signal input terminal of the inverter unit, and the signal output terminal of the inverter unit is connected to the battery pack and other equipment on the ship.

3. The power-on / off control system for a ship EMS management system according to claim 2, characterized in that, The isolation converter includes a low-voltage isolation unit. The input terminal of the low-voltage isolation unit is connected to the output terminal of the power-on module. The output terminal of the low-voltage isolation unit is connected to the input terminal of the isolation transformer unit. The output terminal of the isolation transformer unit is connected to the input terminal of the high-voltage isolation unit. The output terminal of the high-voltage isolation unit is simultaneously connected to the power supply terminal of the EMS self-test module, the power supply terminal of the BMS module, and the power supply input terminal of the remote control switching module.

4. The power-on / off control system for a ship EMS management system according to claim 3, characterized in that, The low-voltage isolation unit includes field-effect transistors G7, G8, G9, G10, G11, and G12, inductors L1, L2, and L3, and capacitors C2 and C3. The emitter of field-effect transistor G7 is simultaneously connected to the collector of field-effect transistor G8, one end of inductor L3, and the input terminal of the isolation transformer unit. The collector of field-effect transistor G7 is simultaneously connected to the collectors of field-effect transistors G9 and G11, and one end of capacitor C3. The field-effect transistor G9... The emitter of the MOSFET G10 is simultaneously connected to the collector of the MOSFET G10, one end of the inductor L2, and the output terminal of the power-on module. The emitter of the MOSFET G11 is simultaneously connected to the collector of the MOSFET G12, one end of the inductor L1, and the input of the isolation transformer unit. The emitter of the MOSFET G8 is simultaneously connected to the emitter of the MOSFET G10, the emitter of the MOSFET G12, the negative terminal of the capacitor C2, and the other end of the capacitor C3. The positive terminal of the capacitor C2 is simultaneously connected to the other ends of the inductors L1, L2, and L3.

5. The power-on / off control system for a ship EMS management system according to claim 3, characterized in that, The high-voltage isolation includes capacitor C1, field-effect transistors G1, G2, G3, G4, G5, and G6. One end of capacitor C1 is simultaneously connected to the input terminal of the battery pack, the collector of field-effect transistor G1, the collector of field-effect transistor G3, and the collector of field-effect transistor G5. The other end of capacitor C1 is simultaneously connected to the input terminal of the isolation transformer unit, the emitter of field-effect transistor G2, the emitter of field-effect transistor G4, and the emitter of field-effect transistor G6. The emitter of field-effect transistor G1 is simultaneously connected to the collector of field-effect transistor G2 and the input terminal of the isolation transformer unit. The emitter of field-effect transistor G3 is simultaneously connected to the collector of field-effect transistor G4 and the input terminal of the isolation transformer unit. The emitter of field-effect transistor G5 is simultaneously connected to the collector of field-effect transistor G6 and the output terminal of the isolation transformer unit.

6. The power-on / off control system for a ship EMS management system according to claim 3, characterized in that, The isolation transformer unit uses a TIHQ1910-600 isolation transformer.

7. The power-on / off control system for a ship EMS management system according to claim 2, characterized in that, The inverter unit includes field-effect transistors Q1, Q2, Q3, Q4, Q5, and Q6, resistors R1, R2, and R3, and capacitor C4. The positive terminal of capacitor C4 is connected to the output terminal of the isolation converter, the collector of field-effect transistors Q5, Q3, and Q1. The negative terminal of capacitor C4 is connected to the emitter of field-effect transistors Q6, Q4, and Q2. The emitter of field-effect transistor Q5 is connected to the collector of field-effect transistor Q6 and one end of resistor R1. The other end of resistor R1 is connected to one end of resistor R2. The emitter of field-effect transistor Q3 is connected to the other end of resistor R2, the collector of field-effect transistor Q4, and one end of resistor R3. The emitter of field-effect transistor Q1 is connected to the other end of resistor R3 and the collector of field-effect transistor Q2.

8. A management method for a ship EMS management system, implemented through a power-on / off control system for a ship EMS management system as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. After the power-on module is powered on, the input voltage is converted into the rated voltage through the isolation converter and then the EMS self-test module, BMS module and remote control switching module are powered. At this time, the ship is switched to pure electric mode through the remote control switching module. When the mode switching is successful, the insulation status is detected by the EMS self-test module; otherwise, the power-on is terminated. S2. When the EMS self-test module detects that the insulation status is insulation, it sends a signal to the BMS module, controls the pre-charging of the battery pack through the pre-charging unit in the BMS module, and after the battery pack pre-charging is completed, it uses the voltage detection unit to detect the voltage of the DC bus. S3. When the DC bus voltage is at normal voltage, the inverter unit starts and charges the battery pack normally.

9. The management method of a ship EMS management system according to claim 8, characterized in that, The process by which an isolation converter transforms the input voltage into the rated voltage is as follows: S1.

1. The voltage is connected through the low-voltage isolation unit in the isolation converter, and the low-voltage connected voltage is transmitted to the isolation transformer unit using the low-voltage isolation unit; S1.2 After the low voltage is converted into a high voltage by the isolation transformer unit, it is sent to the high voltage isolation unit. The high voltage is then sent to the EMS self-test module, BMS module and remote control switching module to charge the battery pack.

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