CN108100201A - A kind of electronic high-voltaghe compartment peculiar to vessel - Google Patents

Abstract

The invention discloses an electric marine high-voltage box, the high-voltage box includes an electrically connected BMS and a 24V battery pack, and the BMS is provided with a battery positive, a battery negative, a motor positive, a motor negative, an MSD maintenance switch, a relay, a first relay, Second relay, third relay, current sensor, fast charge positive, fast charge negative, 380V inverter, 220V inverter and 24V inverter, DC/AC+ from 24V inverter passes through the third relay and 24V battery The positive pole of the battery in the battery pack is connected, and the DC/AC‑ is connected to the negative pole of the battery in the 24V battery pack. The marine high-voltage box can better match the storage battery with the hull, make the storage battery simple and efficient, and reduce energy loss.

Description

An electric marine high voltage box

technical field

The invention relates to electric ship technology, in particular to a high-voltage box for electric ships.

Background technique

The massive emission of carbon dioxide has caused global warming, and extreme climates occur frequently around the world. Statistics show that the carbon dioxide emissions of the global shipping industry account for about 4% of global greenhouse gas emissions. In addition, ship emissions are also one of the main sources of PM2.5 in the air. Due to the increasingly serious environmental pollution caused by ship emissions, the International Maritime Organization (IMO) and more and more countries and regions are actively taking various effective measures to reduce ship emissions. It can save fuel and reduce operating costs. It is a promising energy comprehensive optimization utilization system, and it is also a research hotspot in the field of ship energy conservation and emission reduction. This new environment-friendly propulsion system pays more attention to reducing the impact on the environment while focusing on improving the economy, including fuel pollution, exhaust gas pollution and noise pollution caused by navigation and berthing.

Compared with electric vehicles (electric buses and electric cars), ships are larger in structure, and the loading and use of batteries are more complicated. This requires a simpler and safer high-voltage box to control the energy of batteries on electric ships. use and distribution.

Contents of the invention

The purpose of the present invention is to provide a high-voltage box for electric boats in view of the deficiencies in the prior art. The marine high-voltage box can better match the storage battery with the hull, make the storage battery simple and efficient, and reduce energy loss.

The technical scheme that realizes the object of the present invention is:

An electric marine high-voltage box, the high-voltage box includes an electrically connected battery management system (BATTERY MANAGEMENT SYSTEM, referred to as BMS) and a 24V battery pack, and the BMS is equipped with battery positive, battery negative, motor positive, motor negative, MSD maintenance switches , relay, first relay, second relay, third relay, current sensor, fast charge positive, fast charge negative, 380V inverter, 220V inverter and 24V inverter, among which,

The positive interface battery is connected to the positive pole of the power battery pack of the electric boat, the negative pole interface battery is connected to the negative pole of the power battery pack of the electric boat, the motor is connected to the positive pole interface of the marine drive motor, and the negative pole of the motor is connected to the negative pole interface of the marine drive motor;

The battery positive and the motor positive are connected in series through the MSD maintenance switch and the first relay;

The motor is connected to the fast charging positive, the positive pole of the 380V inverter, the positive pole of the 220V inverter and the positive pole of the 24V inverter in turn;

Motor positive, fast charging positive, 380V inverter, 220V inverter and 24V inverter are all connected with relays;

The battery negative and the motor negative are connected in series through the current sensor and the second relay;

The negative pole of the motor is connected to the fast charging negative pole, the negative pole of the 380V inverter, the negative pole of the 220V inverter and the negative pole of the 24V inverter in turn;

The 380V inverter leads to three-phase lines DC/AC-N, DC/AC-L, DC/AC-G;

220V inverter leads to DC/AC+ and DC/AC-;

24V inverter leads to DC/AC+ and DC/AC-;

The DC/AC+ drawn from the 24V inverter is connected to the positive pole of the battery in the 24V battery pack through the third relay, and the DC/AC- is connected to the negative pole of the battery in the 24V battery pack.

The specifications and parameters of the relay, the first relay, the second relay and the third relay are the same.

The high-voltage box first starts the BMS through the 24V battery, and then the BMS transmits the power in the power battery pack on the electric boat to the positive and negative terminals of the motor through the MSD switch, relay and current sensor, so that the electric boat Marching; in addition, the BMS converts the power of the 24V battery pack into 380V three-phase power and 220V DC power through a 380V inverter and a 220V inverter, and the lead-out wires can be connected to the electrical devices on board, such as air conditioners and TVs , music, lighting, etc. When charging, the power battery pack on the electric boat is charged in turn through the charging cable and the fast charging cable on the BMS.

The high-voltage box requires few parts, is simple in structure, is safe and reliable, and fully satisfies the use on electric ships.

The marine high-voltage box can better match the storage battery with the hull, make the storage battery simple and efficient, and reduce energy loss.

Description of drawings

Fig. 1 is a schematic diagram of the BMS structure in the embodiment.

In the figure, 1. Battery positive 2. Battery negative 3. Motor positive 4. Motor negative 5. MSD maintenance switch 6. Relay 6-1. First relay 6-2. Second relay 6-3. Third relay 7. Current sensor 8. Fast charging positive 9. Fast charging negative 10.380V inverter 11.220V inverter 12.24V inverter.

Detailed ways

The content of the present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited.

Example:

Referring to Figure 1, an electric marine high-voltage box, the high-voltage box includes an electrically connected battery management system (BATTERYMANAGEMENT SYSTEM, referred to as BMS) and a 24V battery pack, and the BMS is equipped with battery positive 1, battery negative 2, and motor positive 3 , motor negative 4, MSD maintenance switch 5, relay 6, first relay 6-1, second relay 6-2, third relay 6-3, current sensor 7, fast charge positive 8, fast charge negative 9, 380V reverse inverter 10, 220V inverter 11 and 24V inverter 12, wherein the BMS

The positive interface battery positive 1 is connected to the positive pole of the electric boat power battery pack, the negative pole interface battery negative 2 is connected to the negative pole of the electric boat power battery pack, the motor positive 3 is connected to the positive pole interface of the marine drive motor, and the motor negative 4 is connected to the marine drive motor connected to the negative terminal;

The battery positive 1 and the motor positive 3 are connected in series through the MSD maintenance switch 5 and the first relay 6-1 in sequence. The MSD maintenance switch 5 is used to cut off the circuit when the current is abnormal, and the first relay 6-1 is used to control the circuit;

The positive pole of the motor 3 is sequentially connected to the positive pole of the fast charging pole 8, the positive pole of the 380V inverter 10, the positive pole of the 220V inverter 11, and the positive pole of the 24V inverter 12;

Motor positive 3, fast charging positive 8, 380V inverter 10, 220V inverter 11 and 24V inverter 12 are all connected with relay 6;

The battery negative 2 and the motor negative 4 are connected in series through the current sensor 7 and the second relay 6-2 in sequence, and the current sensor 7 is used to detect the current;

The motor negative 2 is connected to the fast charging negative 9, the negative pole of the 380V inverter 10, the negative pole of the 220V inverter 11, and the negative pole of the 24V inverter 12 in sequence;

380V inverter 10 leads to three-phase lines DC/AC-N, DC/AC-L, DC/AC-G;

220V inverter 11 leads to DC/AC+ and DC/AC-;

24V inverter 12 leads to DC/AC+ and DC/AC-;

The DC/AC+ drawn from the 24V inverter 12 is connected to the positive pole of the battery in the 24V battery pack through the third relay 6-3, and the DC/AC- is connected to the negative pole of the battery in the 24V battery pack.

The specifications and parameters of the relay 6, the first relay 6-1, the second relay 6-2 and the third relay 6-3 are the same.

In this example, the 380V inverter 10, 220V inverter 11 and 24V inverter 12 are respectively connected to the battery positive 1 and battery negative 2 through their respective relays, and the 380V inverter 10 leads to three three-phase DC/AC lines -N, DC/AC-L, DC/AC-G, used to connect to the 380V electrical equipment on board, 220V inverter 11 leads to two wires for the 220V electrical equipment on board, 24V inverter 12 leads out The two wires are used for 24V electrical equipment, and the positive and negative poles of the battery in the 24V battery pack are respectively connected to the two positive and negative poles drawn from the 24V inverter. When the BMS is started, 24V is used as the starting power supply of the BMS to the BMS Power supply, after the BMS starts, the BMS charges the 24V battery through the electric boat battery.

Claims (2)

1. a kind of electronic high-voltaghe compartment peculiar to vessel, it is characterized in that, the high-voltaghe compartment includes BMS the and 24V accumulator groups of electrical connection, described BMS be equipped with battery just, battery bear, motor just, motor bear, MSD maintenance switch, relay, the first relay, the second relay, 3rd relay, current sensor, fast charge just, fast charge bear, 380V inverters, 220V inverters and 24V inverters, wherein,

Anode interface battery is just connected with the anode of power battery pack on electric ship, cathode interface battery is born and power on electric ship The cathode of battery pack is connected, motor is just connected with electronic driving motor anode interface peculiar to vessel, motor is born and electronic driving electricity peculiar to vessel Machine cathode interface is connected；

Battery just and motor just between pass sequentially through MSD maintenance switch and the first relay series connection；

Motor just successively with fast charge just, the anode of the anode of 380V inverters, the anode of 220V inverters and 24V inverters connects It connects；

Motor just, fast charge just, 380V inverters, 220V inverters and 24V inverters be respectively connected with relay；

Battery is born and motor bear between pass sequentially through current sensor and the second relay series connection；

Motor bear born successively with fast charge, the cathode of the cathode of 380V inverters, the cathode of 220V inverters and 24V inverters connects It connects；

380V inverters draw triple line DC/AC-N, DC/AC-L, DC/AC-G；

220V inverters draw DC/AC+ and DC/AC-；

24V inverters draw DC/AC+ and DC/AC-；

The DC/AC+ that 24V inverters are drawn is connected by the 3rd relay with the anode of accumulator in 24V accumulator groups, DC/AC- It is connected with the cathode of accumulator in 24V accumulator groups.

2. the electronic high-voltaghe compartment peculiar to vessel according to claims 1, it is characterized in that, the relay, the first relay, second Specification, the parameter of relay and the 3rd relay are identical.