CN217048292U - Direct-current charging system for pure electric ship - Google Patents
Direct-current charging system for pure electric ship Download PDFInfo
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- CN217048292U CN217048292U CN202220564047.0U CN202220564047U CN217048292U CN 217048292 U CN217048292 U CN 217048292U CN 202220564047 U CN202220564047 U CN 202220564047U CN 217048292 U CN217048292 U CN 217048292U
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- direct current
- charging box
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- pure electric
- current charging
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 11
- 238000007654 immersion Methods 0.000 claims description 10
- 230000003993 interaction Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 7
- 238000004891 communication Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
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- 230000006855 networking Effects 0.000 description 3
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- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
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Abstract
The utility model discloses a pure electric ship direct current charging system, include: the first wire inlet unit, the transformer wire outlet unit, the isolation step-down transformer unit, the second wire outlet unit, the AC/DC rectification assembly, the direct current charging box and the charging system controller are connected in sequence; the input of first inlet wire unit is connected with municipal power supply network, and the output and the pure electric ships of direct current charging case are connected. Through set up the transformer that has the isolation step-down function between boats and ships electricity consumption and municipal power supply network, guaranteed the safety and the quality of municipal power grid, also improved the stability and the standardization of boats and ships bank electricity system.
Description
Technical Field
The utility model relates to an electric ship technical field, in particular to pure electric ship direct current charging system.
Background
China is in a stage of vigorously developing energy transformation, new energy power generation, electric automobiles and the like grow up along with gradual elimination of traditional fossil energy, and the trend of ship electromotion is increasingly obvious. In recent domestic and world 'the first' electric ship enters water, shore power facilities are under accelerated construction, and a new market of power batteries for the electric ships is gradually formed.
The pure electric ship is converted into electric drive power by the power battery system on the ship to generate power in cooperation with or instead of fuel oil, so that the impact on the environment is reduced, and the energy consumption is reduced. The electric ship can greatly reduce the exhaust emission of the ship, and part of the electric ship can even realize zero emission, so that the application scale of the electric ship is rapidly enlarged, and the electric ship is expected to become a future development focus. The development of the electric ship is slightly later than that of the electric ship in China, but the electric ship is high in development speed and wide in application ship type. The application ship type comprises a passenger ship, a ferry, a business ship, a dry bulk carrier and the like. As the shore power of the inland river basin is only an alternating current power supply system and no direct current charging system exists, the requirement of charging a power battery for a high-power ship cannot be met; due to the particularity of ship operation, the shore charging time is short, so that the problem of high-power charging of the power battery of the electric ship needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a pure electric ships direct current charging system has guaranteed the safety and the quality of municipal power grid through set up the transformer that has the isolation step-down function between boats and ships electricity consumption and municipal power supply network, has also improved the stability and the standardization of boats and ships bank electric system.
In order to solve the technical problem, the embodiment of the utility model provides a pure electric ships direct current charging system, a serial communication port, include: the first wire inlet unit, the transformer wire outlet unit, the isolation step-down transformer unit, the second wire outlet unit, the AC/DC rectifying assembly, the direct current charging box and the charging system controller are connected in sequence;
the input end of the first inlet wire unit is connected with a municipal power supply network, and the output end of the direct current charging box is connected with a pure electric ship.
Further, the AC/DC rectifying assembly includes: a number of AC/DC rectifying units connected in parallel.
Further, the dc charging box includes: the system comprises a charging box controller, a fast fuse, a direct current contactor, a voltage sampler and a current sampler;
the charging box controller is respectively connected with the fast fuse, the direct current contactor, the voltage sampler and the current sampler and obtains the state information of the fast fuse, the direct current contactor, the voltage sampler and the current sampler.
Further, the dc charging box includes: a cabinet door detector;
the cabinet door detector is electrically connected with the charging box controller;
and the charging box controller controls the on-off of the power supply input and the direct current output of the charging box controller according to a cabinet door opening detection signal sent by the cabinet door detector.
Further, an insulation detector is arranged on the output side of the direct current charging box;
the insulation detector is electrically connected with the charging box controller;
and the charging box controller controls the on-off of the direct current output of the direct current charging box according to the detection signal of the insulation detector.
Further, the direct current charging box is provided with a water immersion alarm;
the water immersion alarm is arranged at the bottom of the direct current charging box and is electrically connected with the charging box controller;
and the charging box controller controls the on-off of the output line of the direct current charging box according to the alarm signal of the water immersion alarm.
Further, the direct current charging box is electrically connected with the pure electric ship through a charging cable and a charging plug;
temperature sensors are arranged at the positive pole and the negative pole of the charging plug;
the temperature sensor is electrically connected with the charging box controller;
and the charging box controller controls the on-off of the output line of the direct current charging box according to the detection signal of the temperature sensor.
Further, the output side of the direct current charging box is provided with a discharge loop assembly.
Further, the charging system controller includes: the device comprises a charging control unit, a power control unit and a switch control unit;
the charging control unit is electrically connected with a charging controller and a battery management module of the pure electric ship;
the power control unit is electrically connected with the AC/DC rectifying assembly;
the switch control unit is electrically connected with the direct current charging box.
Further, the charging system controller is provided with a network connection unit;
the network connection unit is electrically connected with the charging control unit;
and the networking unit performs data interaction with the network cloud platform in a wired or wireless mode.
The utility model discloses above-mentioned technical scheme has following profitable technological effect:
through set up the transformer that has the isolation step-down function between boats and ships electricity and municipal power supply network, guaranteed the safety and the quality of municipal power grid, also improved the stability and the standardization of boats and ships bank electricity system.
Drawings
Fig. 1 is a schematic diagram of a dc charging system for a pure electric ship according to an embodiment of the present invention;
fig. 2 is a functional frame diagram of a dc charging box according to an embodiment of the present invention;
fig. 3 is a network architecture diagram of a dc charging system for a pure electric ship according to an embodiment of the present invention.
Reference numerals:
1. the device comprises a municipal power supply network, 2, a first wire inlet unit, 3, a transformer wire outlet unit, 4, an isolation step-down transformer unit, 5, a second wire outlet unit, 6, an AC/DC (alternating current/direct current) rectifier assembly, 7, a direct current charging box, 71, a charging box controller, 8, a charging cable, 9, a charging plug and 10 and a pure electric ship.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in combination with the following embodiments. It should be understood that the description is intended for purposes of illustration only and is not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a pure electric ship 10 dc charging system, which includes: the device comprises a first wire inlet unit 2, a transformer wire outlet unit 3, an isolation step-down transformer unit 4, a second wire outlet unit 5, an AC/DC rectifying assembly 6, a DC charging box 7 and a charging system controller which are connected in sequence; the input end of the first inlet wire unit 2 is connected with the municipal power supply network 1, and the output end of the direct current charging box 7 is connected with the pure electric ship.
Specifically, a 10kV power supply of the municipal power supply network 1 is introduced into an input end of the first incoming line unit 2 (i.e., a high-voltage incoming line cabinet), is output to a 10kV bus through an incoming line breaker, and passes through an input end of the isolation step-down transformer unit 4 of the transformer outgoing line unit 3 to 10kV/0.4 kV. The transformer outgoing line unit 3 is provided with a transformer microcomputer protection device, and the transformer is one of main electrical equipment of a shore power system and is vital to safe and stable operation of the electrical system. Once the fault occurs and the damage is caused, the overhaul difficulty is high, the time is long, and great economic loss is caused. The 10kV/0.4kV isolation step-down transformer unit 4 outputs to the input end of a low-voltage incoming cabinet, the low-voltage incoming cabinet outputs an alternating current bus, an output switch and a reactive power compensation device are configured according to the quantity condition of the AC/DC rectifying assemblies 6, and the target value of the power factor is more than 0.9; the 0.4kV low-voltage alternating current bus is input into an AC/DC rectifying assembly 6 through a circuit breaker, the AC/DC rectifying assembly 6 comprises a plurality of AC/DC rectifying units which are connected in parallel, the alternating current input is provided with a lightning protector for protection, and a control power supply is provided with a leakage protection switch. The power input of the AC/DC rectifying unit is controlled by an AC contactor, so that low-loss standby is realized. The output direct current power supply is connected with a direct current charging box 7 at the front edge of the wharf through a charging cable 8.
The AC/DC rectification module adopts a plurality of groups of AC/DC rectification units which are connected in parallel, so that module redundancy configuration is realized, a single rectification module fails, the normal power supply of the whole charging system is not influenced, and the reliability of direct current charging is improved.
Specifically, referring to fig. 2, the dc charging box 7 includes: a charging box controller 71, a fast fuse, a direct current contactor, a voltage sampler, a current sampler; the charging box controller 71 is connected to the fast fuse, the dc contactor, the voltage sampler, and the current sampler, respectively, and acquires state information of the fast fuse, the dc contactor, the voltage sampler, and the current sampler.
Optionally, the dc charging box 7 includes: a cabinet door detector; the cabinet door detector is electrically connected with the charging box controller 71; the charging box controller 71 controls the on/off of the power supply input and the direct current output according to the cabinet door opening detection signal sent by the cabinet door detector.
Optionally, an insulation detector is arranged on the output side of the dc charging box 7; the insulation detector is electrically connected to the charging box controller 71; the charging box controller 71 controls the on/off of the dc output of the dc charging box 7 based on the detection signal of the insulation detector.
Aiming at a ship berthing wharf, the charging cable 8 needs to be frequently dragged, the charging cable 8 is easy to have single-phase earth fault, and for improving the reliability and the continuity of power supply, the direct current output side is configured with insulation monitoring, the outside voltage of the direct current output contactor needs to be detected before insulation detection is carried out, when the voltage exceeds +/-10V, the insulation detection flow needs to be stopped, alarm information is sent out, and the safe operation of a direct current charging circuit is protected.
Optionally, the dc charging box 7 is provided with a water immersion alarm; the water immersion alarm is arranged at the bottom of the direct current charging box 7 and is electrically connected with the charging box controller 71; the charging box controller 71 controls the on-off of the output line of the dc charging box 7 according to the alarm signal of the water immersion alarm.
In addition, aiming at frequent change of water level fall of wharfs and ports, the direct current charging box 7 is provided with a water immersion alarm, and the direct current charging box gives an alarm when the water level exceeds a set water level by 100mm or stops charging and gives an alarm signal when the water level exceeds a set value by 200 mm; and various protective measures are designed, so that the safety of the charging system is improved.
Optionally, the direct-current charging box 7 is electrically connected with the pure electric ship 10 through a charging cable 8 and a charging plug 9; temperature sensors are arranged at the positive pole and the negative pole of the charging plug 9; the temperature sensor is electrically connected to the charging box controller 71; the charging-tank controller 71 controls the on/off of the output line of the dc charging tank 7 in accordance with the detection signal of the temperature sensor.
Furthermore, when the ship power battery is charged at high power, the temperature of the charging plug 9 is easily overhigh to cause fire, and the temperature of the positive pole and the negative pole of the charging plug 9 is monitored. When the temperature of the pole reaches 90 ℃, an alarm signal is sent out, and the output power is reduced; and when the temperature of the pole is more than or equal to 90 ℃ and the duration time exceeds 15min, or the temperature of the pole reaches 120 ℃, stopping charging and sending an alarm signal.
Optionally, the output side of the direct current charging box 7 is provided with a discharge loop assembly, so that the residual voltage of the direct current loop is prevented from harming a human body, and the safety of the system is improved.
The direct current charging box 7 is provided with a group of direct current output interfaces and is connected with the onboard charging cable 8 through a standard quick plug connector to provide a direct current charging power supply for the ship; the fast fuse, the direct current contactor, the voltage sampler and the current sampler of the direct current charging box 7 can realize overvoltage protection and undervoltage protection on the input side, can also provide short-circuit current protection for a power supply loop and the charging cable 8, so that the charging cable has over-temperature protection, and when the internal temperature reaches a protection threshold value, the power is reduced or the output is stopped. The direct current charging box 7 also has door opening protection, and when the cabinet door of the equipment is opened to cause the exposure of the charged part, the power supply input and the direct current output can be cut off simultaneously.
Further, referring to fig. 3, the charging system controller includes: the device comprises a charging control unit, a power control unit and a switch control unit; the charging control unit is electrically connected with a charging controller and a battery management module of the pure electric ship 10; the power control unit is electrically connected with the AC/DC rectifying assembly 6; the switch control unit is electrically connected with the direct current charging box 7.
Further, the charging system controller is provided with a network connection unit; the network connection unit is electrically connected with the charging control unit; and the networking unit performs data interaction with the network cloud platform in a wired or wireless mode.
The controller of the AC/DC rectifying module is in data communication with the charging box controller 71 of the DC charging box 7, and the power control function of the AC/DC rectifying unit is realized according to the requirement; and the AC/DC rectification module is communicated with the networking module, realizes the function of uploading the charging state and the equipment state data, and receives and issues a charging start-stop control instruction. The internet module is connected into the cloud platform through a wire or a wireless mode, the functions of processing conversion of a communication protocol with the platform, encryption and decryption of transaction data and storage are achieved, the charging load regulation and control and charging start-stop control commands of the cloud platform are received, functional parameters such as charging voltage, charging current, charging time and charging amount are visually displayed through a human-computer interface, and the safety, convenience and reliability of power supply are improved.
The embodiment of the utility model provides a pure electric ships direct current charging system aims at protecting, include: the first wire inlet unit, the transformer wire outlet unit, the isolation step-down transformer unit, the second wire outlet unit, the AC/DC rectification assembly, the direct current charging box and the charging system controller are connected in sequence; the input of first inlet wire unit is connected with municipal power supply network, and the output and the pure electric ships of direct current charging case are connected. The technical scheme has the following effects:
through set up the transformer that has the isolation step-down function between boats and ships electricity and municipal power supply network, guaranteed the safety and the quality of municipal power grid, also improved the stability and the standardization of boats and ships bank electricity system.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundary of the appended claims, or the equivalents of such scope and boundary.
Claims (10)
1. The utility model provides a pure electric ships direct current charging system which characterized in that includes: the charging system comprises a first wire inlet unit (2), a transformer wire outlet unit (3), an isolation step-down transformer unit (4), a second wire outlet unit (5), an AC/DC rectifying assembly (6), a direct current charging box (7) and a charging system controller which are connected in sequence;
the input end of the first wire inlet unit (2) is connected with the municipal power supply network (1), and the output end of the direct current charging box (7) is connected with the pure electric ship (10).
2. The pure electric ship direct-current charging system according to claim 1,
the AC/DC rectifying assembly (6) comprises: a number of AC/DC rectifying units connected in parallel.
3. The pure electric ship direct-current charging system according to claim 1,
the DC charging box (7) comprises: the system comprises a charging box controller, a fast fuse, a direct current contactor, a voltage sampler and a current sampler;
the charging box controller (71) is connected with the fast fuse, the direct current contactor, the voltage sampler and the current sampler respectively, and acquires state information of the fast fuse, the direct current contactor, the voltage sampler and the current sampler.
4. A pure electric ship direct current charging system according to claim 3,
the DC charging box (7) comprises: a cabinet door detector;
the cabinet door detector is electrically connected with the charging box controller (71);
and the charging box controller (71) controls the on-off of the power supply input and the direct current output of the charging box controller according to a cabinet door opening detection signal sent by the cabinet door detector.
5. The pure electric ship direct-current charging system according to claim 3,
an insulation detector is arranged on the output side of the direct current charging box (7);
the insulation detector is electrically connected with the charging box controller;
the charging box controller (71) controls the on-off of the direct current output of the direct current charging box (7) according to the detection signal of the insulation detector.
6. A pure electric ship direct current charging system according to claim 3,
the direct current charging box (7) is provided with a water immersion alarm;
the water immersion alarm is arranged at the bottom of the direct current charging box (7) and is electrically connected with the charging box controller (71);
and the charging box controller (71) controls the on-off of an output circuit of the direct current charging box (7) according to the alarm signal of the water immersion alarm.
7. The pure electric ship direct-current charging system according to claim 3,
the direct-current charging box (7) is electrically connected with the pure electric ship (10) through a charging cable (8) and a charging plug (9);
temperature sensors are arranged at the positive pole and the negative pole of the charging plug (9);
the temperature sensor is electrically connected with the charging box controller (71);
the charging box controller (71) controls the on-off of the output line of the direct current charging box (7) according to the detection signal of the temperature sensor.
8. The pure electric ship direct-current charging system according to claim 3,
and a discharge loop assembly is arranged on the output side of the direct current charging box (7).
9. A pure electric ship direct current charging system according to any one of claims 1 to 8,
the charging system controller includes: the device comprises a charging control unit, a power control unit and a switch control unit;
the charging control unit is electrically connected with a charging controller and a battery management module of the pure electric ship;
the power control unit is electrically connected with the AC/DC rectifying assembly (6);
the switch control unit is electrically connected with the direct current charging box (7).
10. The pure electric ship direct-current charging system according to claim 9,
the charging system controller is provided with a network connection unit;
the network connection unit is electrically connected with the charging control unit;
and the network connection unit performs data interaction with the network cloud platform in a wired or wireless mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220564047.0U CN217048292U (en) | 2022-03-15 | 2022-03-15 | Direct-current charging system for pure electric ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220564047.0U CN217048292U (en) | 2022-03-15 | 2022-03-15 | Direct-current charging system for pure electric ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217048292U true CN217048292U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220564047.0U Expired - Fee Related CN217048292U (en) | 2022-03-15 | 2022-03-15 | Direct-current charging system for pure electric ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217048292U (en) |
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2022
- 2022-03-15 CN CN202220564047.0U patent/CN217048292U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220726 |
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| CF01 | Termination of patent right due to non-payment of annual fee |