CN117104477A - Ship pure battery redundant power device and control method thereof - Google Patents
Ship pure battery redundant power device and control method thereof Download PDFInfo
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- CN117104477A CN117104477A CN202311172703.8A CN202311172703A CN117104477A CN 117104477 A CN117104477 A CN 117104477A CN 202311172703 A CN202311172703 A CN 202311172703A CN 117104477 A CN117104477 A CN 117104477A
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- lithium battery
- inverter
- power
- battery pack
- daily
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- 238000000034 method Methods 0.000 title claims abstract description 15
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 79
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 79
- 238000002955 isolation Methods 0.000 claims abstract description 35
- 239000004065 semiconductor Substances 0.000 claims abstract description 6
- 238000012544 monitoring process Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000008447 perception Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000001743 silencing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000009323 psychological health Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B79/00—Monitoring properties or operating parameters of vessels in operation
- B63B79/40—Monitoring properties or operating parameters of vessels in operation for controlling the operation of vessels, e.g. monitoring their speed, routing or maintenance schedules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/32—Waterborne vessels
Abstract
The invention discloses a pure battery redundant power device for a ship, which comprises a pure battery redundant power component and a control system; the pure electric Chi Rongyu power assembly comprises a shore power charging module, a redundant power station module, a power station control module and a load module, wherein the redundant power station module comprises a first lithium battery pack and a second lithium battery pack, and the power station control module comprises a direct-current contactor CB1, a direct-current contactor CB2, a bypass switch CB3, a bus-bar switch CB4, two diodes, a left-day inverter, a right-day inverter, a left-propulsion inverter, a right-propulsion inverter, a left isolation transformer and a right isolation transformer; the disconnection operation is realized by reversely installing the diode, the power redundancy standby is realized, and the ship power is ensured to ensure the navigation safety of the ship to the greatest extent; meanwhile, the marine variable frequency power module based on the wide bandgap semiconductor is adopted, so that the volume and the weight of the direct current bus variable frequency electric control equipment are greatly reduced. The invention also discloses a control method of the redundant power device.
Description
Technical Field
The invention relates to a battery power technology, in particular to a pure battery redundant power device for a ship and a control method thereof.
Background
With the great control of the emission of pollutants from ships, the progress of battery technology and the reduction of price in China, battery power is widely proposed as a representative of a clean power system, and the battery power meets the requirements of zero emission and low noise, and simultaneously further reduces the running cost, so that the battery power is the power preference of small and medium-sized inland ships in the future.
The pure battery power system adopted by the pure battery power ship at present has the following problems: 1) The redundant battery is not provided, once the battery fails, the ship loses power, and serious hidden danger is left for the ship; 2) The redundant batteries are adopted in part of pure battery power systems, but the redundant batteries are manually switched, or the voltage of the redundant batteries is acquired through a power sensor, and then the battery is switched through the switching-off and switching-on of a PLC program control relay, so that the system has the advantages of complex structure, high cost and low control precision; 3) The variable frequency power module is large in size and occupies more space; 4) The noise of the marine variable-frequency power module is large, and the physical and psychological health of the operating personnel on the ship is affected; 4) The quality of the power supply generated by inversion is poor, which is easy to cause the damage of the on-board daily equipment; 5) The on-shore personnel cannot learn the operating conditions of the on-board power system.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the marine pure battery redundant power device is simple in structure and convenient and reliable to control.
In order to solve the technical problems, the invention adopts the following technical scheme: the marine pure battery redundant power device comprises a pure battery redundant power component and a control system; wherein, the pure electric Chi Rongyu power assembly comprises a shore power charging module, a redundant power station module, a power station control module and a load module,
the redundant power station module comprises a first lithium battery pack and a second lithium battery pack,
the power station control module comprises a direct current contactor CB1, a direct current contactor CB2, a bypass switch CB3, a bus switch CB4, two diodes, a left daily inverter, a right daily inverter, a left propulsion inverter, a right propulsion inverter, a left isolation transformer and a right isolation transformer;
the first lithium battery pack and the second lithium battery pack are respectively connected to a direct current bus provided with a bus switch CB4 through a first lead, and diodes which are reversely installed are respectively arranged on two sides of the bus switch on the direct current bus;
a direct current contactor CB1 is arranged on a first wire between the first lithium battery pack and the direct current bus, a direct current contactor CB2 is arranged on a first wire between the second lithium battery pack and the direct current bus, and a connecting wire provided with a bypass switch CB3 is arranged between the two first wires;
the left direct current bus is connected with a second wire, and the fuse, the left propulsion inverter and the first main propulsion motor are sequentially connected through the second wire; a third wire is connected between the diode and the bus bar switch CB4 on the left side direct current bus bar, and a fuse, a left daily inverter and a left isolation transformer are sequentially arranged on the third wire;
the right direct current bus is connected with a fourth wire, and the fuse, the right propulsion inverter and the second main propulsion motor are sequentially connected through the fourth wire; a fifth wire is connected between the diode and the bus bar switch CB4 on the right side direct current bus bar, and a fuse, a right daily inverter and a right isolation transformer are sequentially arranged on the fifth wire;
the left isolation transformer and the right isolation transformer are respectively connected with a daily load through wires;
the shore power charging module comprises a ship charging pile, and the ship charging pile is connected with a shore power supply and then charges the first lithium battery pack and the second lithium battery pack.
As a preferable scheme, the shore power charging module further comprises a shore power socket box connected with the daily load, and the shore power socket box is used for supplying power to the daily load of the ship when the ship is on shore.
As a preferable scheme, the left-hand daily inverter, the right-hand daily inverter, the left-hand boost inverter and the right-hand boost inverter all adopt frequency conversion power modules based on wide forbidden band semiconductors.
As a preferred scheme, the variable frequency power module adopts a switching frequency of 25 kHz.
As a preferable scheme, the control system is a remote monitoring system; the remote monitoring system comprises an application layer, a data acquisition transmission layer and a perception layer; the application layer comprises an upper computer which is used as a Web server; the data acquisition transmission layer comprises a data transmission unit and a data acquisition unit; the sensing layer comprises a voltage sensor, a current sensor and a temperature sensor which are arranged in the left daily inverter, the right daily inverter, the left propulsion inverter, the right propulsion inverter, the left isolation transformer and the right isolation transformer, and a voltage sensor and a temperature sensor which are arranged in the first lithium battery pack and the second lithium battery pack.
The technical problems to be solved by the invention are as follows: the control method of the ship pure battery redundant power device is provided.
In order to solve the technical problems, the invention adopts the following technical scheme: the control method of the marine pure battery redundant power device comprises the following steps:
during normal operation, the bus bar switch CB4 is closed, the bypass switch CB3 is opened, at the moment, the first lithium battery pack supplies power for the first main propulsion motor, and the second lithium battery pack supplies power for the second main propulsion motor; meanwhile, the left daily inverter and the right daily inverter are used for one, if the input voltage of the first lithium battery pack exceeds that of the second lithium battery pack, the diode corresponding to the first lithium battery pack is in a conducting state, the daily load is supplied with power through the left daily inverter and the left isolation transformer, and at the moment, the diode corresponding to the second lithium battery pack is in a cut-off state, and the first lithium battery pack supplies power to the daily load; if the residual electric quantity and the voltage of the second lithium battery pack exceed the first lithium battery pack along with the change of the working condition, the diode corresponding to the first lithium battery pack is in a cut-off state, and then the daily load is automatically switched to the second lithium battery pack to supply power; so doing a reciprocating cycle;
when a certain group of lithium battery packs fails, the bypass switch CB3 is closed, so that the rest group of lithium battery packs can supply power to the two main pushing motors simultaneously, and the navigation safety of the ship is guaranteed to the greatest extent.
As a preferable scheme, the left daily inverter and the right daily inverter both adopt a pulse-to-peak PWM generation mode, and separate the carrier waves of the three-phase sine waves of U/V/W, and the carrier waves are respectively different by 120 degrees.
The beneficial effects of the invention are as follows:
1) The invention provides a ship redundant power device, wherein two groups of lithium battery packs realize disconnection operation and power redundancy standby by reversely installing diodes on a direct current bus, namely one standby for two daily power supplies, so that the ship power is ensured to ensure the navigation safety of the ship to the greatest extent;
2) The invention provides a ship redundant power device, which automatically starts one of the two groups of battery packs to operate according to the voltage of the two groups of battery packs, and compared with the traditional method that the voltage of a lithium battery pack is measured through sensing equipment and compared with the voltage, and then the voltage is switched through switching of a relay;
3) In the marine variable frequency power module, the wide forbidden band semiconductor is adopted to replace the traditional semiconductor, so that the variable frequency power module is small in size and occupies a small space; the silencing effect is achieved by using the switching frequency of 25kHz, and the problems that a small ship, a public service ship, a yacht or the like is small in ship cabin space, sensitive to noise and the like are solved;
4) The design of high switching frequency makes the volume and weight of peripheral components of the variable frequency power module, such as a reactor, a transformer and the like lighter, and further reduces the volume and weight of the variable frequency electric control equipment of the direct current bus.
5) The remote monitoring system provided by the invention can be used for monitoring the running condition of the redundant power system of the battery by personnel on the shore at any time and any place, so that the constraints of space and time are broken through.
Drawings
FIG. 1 is a diagram of a marine pure battery redundant power plant;
FIG. 2 is a schematic diagram of a marine battery-only redundant power system;
FIG. 3 is a PWM schematic diagram of pulse staggering;
FIG. 4 is a block diagram of a remote monitoring system;
in the figure:
100-pure electric Chi Rongyu power components, 200-remote monitoring systems; a 101-shore power charging module, a 102-redundant power station module, a 103-power station control module, a 104-load module, a 105-first main propulsion motor, and a 106-second main propulsion motor; 201-an application layer, 202-a data acquisition transmission layer and 203-a perception layer;
1011-on-board charging piles; 1021-first lithium battery, 1022-second lithium battery;
a diode 1031, a 1032 left daily inverter, a 1033 right daily inverter, a 1034 left propulsion inverter, a 1035 right propulsion inverter, a 1036 left isolation transformer, a 1037 right isolation transformer and a 1038 fuse.
Detailed Description
Specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
As shown in fig. 1-4, the marine pure battery redundant power plant comprises a pure battery redundant power assembly 100 and a control system; wherein the pure electric Chi Rongyu power assembly 100 comprises a shore power charging module 101, a redundant power station module 102, a station control module 103 and a load module 104,
the redundant power plant module 102 includes a first lithium battery pack 1021 and a second lithium battery pack 1022,
the power station control module 103 comprises a direct current contactor CB1, a direct current contactor CB2, a bypass switch CB3, a bus switch CB4, two diodes 1031, a left daily inverter 1032, a right daily inverter 1033, a left propulsion inverter 1034, a right propulsion inverter 1035, a left isolation transformer 1036 and a right isolation transformer 1037; the left daily inverter 1032, the right daily inverter 1033, the left propulsion inverter 1034 and the right propulsion inverter 1035 all adopt frequency conversion power modules based on wide bandgap semiconductors, and the power density of the frequency conversion power modules is 1 time higher than that of the conventional frequency conversion power modules. The variable frequency power module adopts a switching frequency of 25kHz to achieve a silencing effect.
The first lithium battery 1021 and the second lithium battery 1022 are respectively connected to a direct current bus provided with a bus switch CB4 through a first lead, and diodes 1031 which are reversely installed are respectively arranged on two sides of the bus switch on the direct current bus;
a direct current contactor CB1 is arranged on a first wire between the first lithium battery pack 1021 and the direct current bus, a direct current contactor CB2 is arranged on a first wire between the second lithium battery pack 1022 and the direct current bus, and a connecting wire provided with a bypass switch CB3 is arranged between the two first wires;
the left direct current bus is connected with a second wire, and the fuse 1038, the left propulsion inverter 1034 and the first main propulsion motor 105 are sequentially connected through the second wire; a third wire is connected between the diode 1031 and the bus bar switch CB4 on the left direct current bus, and a fuse 1038, a left daily inverter 1032 and a left isolation transformer 1036 are sequentially arranged on the third wire;
the right direct current bus is connected with a fourth wire, and the fuse 1038, the right propulsion inverter 1035 and the second main propulsion motor 106 are sequentially connected through the fourth wire; a fifth wire is connected between the diode 1031 and the bus bar switch CB4 on the right side direct current bus, and a fuse 1038, a right daily inverter 1033 and a right isolation transformer 1037 are sequentially arranged on the fifth wire;
the left isolation transformer 1036 and the right isolation transformer 1037 are respectively connected with a daily load through wires;
the shore power charging module 101 comprises a ship charging pile 1011, and the ship charging pile 1011 is connected with a shore power supply to charge the first lithium battery 1021 and the second lithium battery 1022. The shore power charging module 101 further comprises a shore power socket box connected with the load module 104, wherein the shore power socket box is used for supplying power to the daily load of the ship when the ship is on shore;
the control system is a remote monitoring system 200; the remote monitoring system 200 comprises an application layer 201, a data acquisition and transmission layer 202 and a perception layer 203; the application layer comprises an upper computer which is used as a Web server; the data acquisition transmission layer comprises a data transmission unit and a MODBUS data acquisition unit; the sensing layer includes voltage sensors, current sensors and temperature sensors disposed in the left daily inverter 1032, the right daily inverter 1033, the left boost inverter 1034, the right boost inverter 1035, the left isolation transformer 1036, the right isolation transformer 1037, and voltage sensors and temperature sensors disposed in the first lithium battery pack 1021 and the second lithium battery pack 1022.
The remote monitoring system 200 comprises the following monitoring method:
(1) Data acquisition
The MODBUS data collector collects the running states of a first lithium battery pack 1021, a second lithium battery pack 1022, a left propulsion inverter 1034, a right propulsion inverter 1035, a left daily inverter 1032, a right daily inverter 1033, a left isolation transformer 1036 and a right isolation transformer 1037 of the equipment layer and controls the opening and closing of the direct current contactor;
(2) The data transmission unit transmits the data acquired by the MODBUS data acquisition unit to the upper computer in a wireless mode, and the upper computer remotely controls the opening and closing of the direct current contactor according to the running states of the first lithium battery pack 1021, the second lithium battery pack 1022, the left propulsion inverter 1034, the right propulsion inverter 1035, the left daily inverter 1032, the right daily inverter 1033, the left isolation transformer 1036 and the right isolation transformer 1037;
(3) The remote user interacts with the Web server through the Internet to realize remote monitoring of the redundant power system of the battery.
The control method of the ship pure battery redundant power device comprises the following specific processes:
during normal operation, the bus bar switch CB4 is closed, the bypass switch CB3 is opened, at the moment, the first lithium battery pack 1021 supplies power for the first main propulsion motor, and the second lithium battery pack 1022 supplies power for the second main propulsion motor; meanwhile, the left daily inverter 1032 and the right daily inverter 1033 are used for one device, if the input voltage of the first lithium battery 1021 exceeds that of the second lithium battery 1022, the diode 1031 corresponding to the first lithium battery 1021 is in a conducting state, and the daily load is supplied with power through the left daily inverter 1032 and the left isolation transformer 1036, and at this time, the diode 1031 corresponding to the second lithium battery 1022 is in a cut-off state, and the first lithium battery 1021 supplies power to the daily load; if the remaining capacity and voltage of the second lithium battery 1022 exceed the first lithium battery 1021 along with the change of the working condition, the diode 1031 corresponding to the first lithium battery 1021 is in the off state, and then the daily load is automatically switched to the second lithium battery 1022 to supply power; so doing a reciprocating cycle;
when a certain group of lithium battery packs fails, the bypass switch CB3 is closed, so that the rest group of lithium battery packs can supply power to the two main pushing motors simultaneously, and the navigation safety of the ship is guaranteed to the greatest extent.
As shown in fig. 3, in order to generate a high-quality daily power supply, the left daily inverter 1032 and the right daily inverter 1033 each use a PWM generation method of pulse peak-shifting, and separate the three-phase sine wave carriers of U/V/W by 120 ° respectively. The generated three-phase PWM can have better harmonic characteristics and generate smaller total harmonic distortion.
The above-described embodiments are merely illustrative of the principles and functions of the present invention, and some of the practical examples, not intended to limit the invention; it should be noted that modifications and improvements can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the present invention.
Claims (7)
1. The marine pure battery redundant power device comprises a pure battery redundant power component and a control system; wherein, the pure electric Chi Rongyu power assembly comprises a shore power charging module, a redundant power station module, a power station control module and a load module,
the redundant power station module comprises a first lithium battery pack and a second lithium battery pack,
the method is characterized in that: the power station control module comprises a direct current contactor CB1, a direct current contactor CB2, a bypass switch CB3, a bus-tie switch CB4, two diodes, a left-day inverter, a right-day inverter, a left propulsion inverter, a right propulsion inverter, a left isolation transformer and a right isolation transformer;
the first lithium battery pack and the second lithium battery pack are respectively connected to a direct current bus provided with a bus switch CB4 through a first lead, and diodes which are reversely installed are respectively arranged on two sides of the bus switch on the direct current bus;
a direct current contactor CB1 is arranged on a first wire between the first lithium battery pack and the direct current bus, a direct current contactor CB2 is arranged on a first wire between the second lithium battery pack and the direct current bus, and a connecting wire provided with a bypass switch CB3 is arranged between the two first wires;
the left direct current bus is connected with a second wire, and the fuse, the left propulsion inverter and the first main propulsion motor are sequentially connected through the second wire; a third wire is connected between the diode and the bus bar switch CB4 on the left side direct current bus bar, and a fuse, a left daily inverter and a left isolation transformer are sequentially arranged on the third wire;
the right direct current bus is connected with a fourth wire, and the fuse, the right propulsion inverter and the second main propulsion motor are sequentially connected through the fourth wire; a fifth wire is connected between the diode and the bus bar switch CB4 on the right side direct current bus bar, and a fuse, a right daily inverter and a right isolation transformer are sequentially arranged on the fifth wire;
the left isolation transformer and the right isolation transformer are respectively connected with a daily load through wires;
the shore power charging module comprises a ship charging pile, and the ship charging pile is connected with a shore power supply and then charges the first lithium battery pack and the second lithium battery pack.
2. The marine pure battery redundant power plant of claim 1, wherein: the shore power charging module further comprises a shore power socket box connected with the daily load, and the shore power socket box is used for supplying power to the daily load of the ship when the ship is on shore.
3. The marine pure battery redundant power device according to claim 1, wherein the left-day inverter, the right-day inverter, the left propulsion inverter and the right propulsion inverter all adopt variable frequency power modules based on wide bandgap semiconductors.
4. The marine pure battery redundant power plant of claim 3, wherein the variable frequency power module employs a switching frequency of 25 kHz.
5. The marine pure battery redundant power plant of claim 1, wherein the control system is a remote monitoring system; the remote monitoring system comprises an application layer, a data acquisition transmission layer and a perception layer; the application layer comprises an upper computer which is used as a Web server; the data acquisition transmission layer comprises a data transmission unit and a data acquisition unit; the sensing layer comprises a voltage sensor, a current sensor and a temperature sensor which are arranged in the left daily inverter, the right daily inverter, the left propulsion inverter, the right propulsion inverter, the left isolation transformer and the right isolation transformer, and a voltage sensor and a temperature sensor which are arranged in the first lithium battery pack and the second lithium battery pack.
6. The control method of the marine pure battery redundant power plant according to any one of claims 1 to 5, which comprises the following specific processes:
during normal operation, the bus bar switch CB4 is closed, the bypass switch CB3 is opened, at the moment, the first lithium battery pack supplies power for the first main propulsion motor, and the second lithium battery pack supplies power for the second main propulsion motor; meanwhile, the left daily inverter and the right daily inverter are used for one, if the input voltage of the first lithium battery pack exceeds that of the second lithium battery pack, the diode corresponding to the first lithium battery pack is in a conducting state, the daily load is supplied with power through the left daily inverter and the left isolation transformer, and at the moment, the diode corresponding to the second lithium battery pack is in a cut-off state, and the first lithium battery pack supplies power to the daily load; if the residual electric quantity and the voltage of the second lithium battery pack exceed the first lithium battery pack along with the change of the working condition, the diode corresponding to the first lithium battery pack is in a cut-off state, and then the daily load is automatically switched to the second lithium battery pack to supply power; so doing a reciprocating cycle;
when a certain group of lithium battery packs fails, the bypass switch CB3 is closed, so that the rest group of lithium battery packs can supply power to the two main pushing motors simultaneously, and the navigation safety of the ship is guaranteed to the greatest extent.
7. The control method of the marine pure battery redundant power plant according to claim 6, wherein: the left daily inverter and the right daily inverter both adopt a pulse-to-peak PWM generation mode, and separate the carrier waves of the three-phase sine waves of U/V/W, and the phase differences are 120 degrees respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310841405 | 2023-07-11 | ||
| CN2023108414057 | 2023-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117104477A true CN117104477A (en) | 2023-11-24 |
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ID=88798307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311172703.8A Pending CN117104477A (en) | 2023-07-11 | 2023-09-11 | Ship pure battery redundant power device and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117104477A (en) |
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2023
- 2023-09-11 CN CN202311172703.8A patent/CN117104477A/en active Pending
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Guo jiahuodiqu after: Zhong Guo Address after: Plot 83-D, Development Zone, Xinwu District, Wuxi City, Jiangsu Province, 214135 Applicant after: China Shipbuilding Saisiyi (Wuxi) Electrical Technology Co.,Ltd. Address before: Plot 83-D, Development Zone, Xinwu District, Wuxi City, Jiangsu Province, 214135 Applicant before: WUXI SILENT ELECTRIC SYSTEM (SES) TECHNOLOGY Co.,Ltd. Guo jiahuodiqu before: Zhong Guo |
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