Electric energy system for ship and ship

Abstract

The embodiment of the utility model provides an electric energy system for a ship and the ship. The electric energy system for the ship comprises a battery module, a high-voltage box, a first operation panel and an emergency power-off assembly. The high-voltage box comprises a power supply master control loop and an emergency stop circuit. And a switch is arranged on the power supply master control loop. And the sudden stop circuit is used for disconnecting the switch when an emergency event occurs, so that the power supply main control loop is disconnected. The emergency power-off assembly comprises a plurality of emergency controls connected with the emergency power-off circuit, and the emergency controls are arranged on a first operation panel which is arranged at the position of a driving console of the ship and electrically connected with the high-voltage box, the high-voltage box and a battery compartment of the ship respectively. According to the scheme, a plurality of emergency paths are formed through the plurality of emergency controls and the emergency circuit, so that a user can select a relatively convenient and rapid mode to carry out emergency cut-off and power-off on the battery module, and the power supply reliability and safety of the electric energy system for the whole ship can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of ship technology, and in particular to a ship electric energy system and a ship. Background Art

[0002] With the development of new energy, ships that rely on electricity are becoming more and more widely used. Ships that rely on electricity need to be equipped with battery systems, the design of which is mainly converted from land-based electric vehicles and other industries. The existing battery systems on ships cannot fully meet the safety requirements of the current new energy ship specifications. Utility Model Content

[0003] This application provides a marine power system and a ship through multiple embodiments, so that the battery system on the ship can meet the current relevant specifications and standards for new energy ships, ensuring the safety and reliability of the battery system as the main power source of new energy ships.

[0004] In the first embodiment, the present application provides a ship power system. The ship power system includes:

[0005] Battery module;

[0006] a high-voltage box, electrically connected to the battery module, and both the high-voltage box and the battery module are arranged in the battery compartment of the ship; the high-voltage box includes a power supply main control circuit and an emergency stop circuit, the power supply main control circuit is provided with a switch, and the emergency stop circuit is used to disconnect the switch in the event of an emergency, so as to disconnect the power supply main control circuit;

[0007] A first operating panel, arranged at the ship's control console and electrically connected to the high-voltage box;

[0008] The emergency power-off component includes the emergency stop circuit and a plurality of emergency controls connected to the emergency stop circuit. The high-voltage box, the battery compartment and the first operating panel are each provided with one of the emergency controls.

[0009] Optionally, the emergency stop circuit includes an emergency stop trigger unit and an emergency stop response unit; the emergency stop trigger unit includes an emergency stop relay and the multiple emergency controls connected in series, and the emergency stop relay and the multiple emergency controls are connected in series; the emergency stop response unit includes the emergency stop normally open contact of the emergency stop relay and at least one main control relay, the emergency stop normally open contact is connected in series with the at least one main control relay, and the switch is the main control normally open contact of the at least one main control relay; when any one of the emergency controls is triggered, the emergency stop relay loses power, the emergency stop normally open contact is disconnected, the at least one main control relay loses power, and the main control normally open contact is disconnected.

[0010] Optionally, the at least one main control relay includes at least one of a main positive relay and a main negative relay.

[0011] Optionally, the at least one master control relay further comprises a pre-charge relay.

[0012] Optionally, the ship's electrical energy system also includes: a fuel cell, a gas detection device, a distribution board and an electric energy management device; the battery module is electrically connected to the distribution board via the high-voltage box, and the fuel cell is arranged in the battery compartment and electrically connected to the distribution board; the electric energy management device is arranged on the distribution board and is communicatively connected to the high-voltage box and the gas detection device, the gas detection device is used to detect the concentration of combustible gas in the battery compartment, and the electric energy management device is used to send an emergency cut-off signal to the high-voltage box to disconnect the switch when the concentration of the combustible gas is greater than a set concentration threshold.

[0013] Optionally, the ship electric energy system further comprises a battery management device; the battery management device comprises a first management module and a second management module; the battery module comprises a plurality of rechargeable energy storage batteries, one energy storage battery in the battery module is correspondingly configured with one first management module, and the first management module is used to monitor the state of the energy storage battery; the second management module is arranged in the high-voltage box and is electrically connected to the electric energy management device and the first management modules respectively corresponding to the plurality of energy storage batteries; the second management module is used to perform adaptive management on the battery module according to the monitored state of the energy storage battery and / or the communication information with the electric energy management device;

[0014] The high-voltage box further comprises a voltage conversion circuit, one end of which is connected to the positive electrode of the battery module for charging and discharging, and the other end of which is connected to the second management module;

[0015] The ship electric energy system further includes an auxiliary power supply device, and the auxiliary power supply device is connected to the second management module.

[0016] Optionally, the other end of the voltage conversion circuit is also connected to the power management device.

[0017] Optionally, the high-voltage box is provided with a second operating panel, the second operating panel is provided with an operating panel selection control, the operating panel selection control has a first gear position and a second gear position; the first operating panel is also provided with a first up and down power control, and the second operating panel is provided with a second up and down power control;

[0018] When the operation panel selection control is in the first gear position, the first operation panel is an available operation panel, and the battery management device can be powered off and dormant and powered on and awakened by operating the first power-on and power-off control and utilizing the power management device;

[0019] When the operation panel selection switch is in the second gear position, the second operation panel is an available operation panel, and the battery management device can be powered off and dormant or powered on and awakened by operating the second power-on and power-off controls.

[0020] Optionally, the ship power system also includes an ambient temperature collection device communicatively connected to the second management module, and the ambient temperature collection device is used to collect the ambient temperature of the battery module; the high-voltage box also includes a heating circuit, one end of the heating circuit is connected to the heating positive electrode of the battery module, and the other end of the heating circuit is connected to the heating negative electrode of the battery module, and the heating circuit is used to heat the battery module when the ambient temperature is lower than a temperature threshold.

[0021] In a second embodiment, the present application provides a ship, which includes the ship electrical energy system provided in the first embodiment.

[0022] In each scheme provided by the utility model, the ship's electric energy system includes a battery module, a high-voltage box, a first operating panel and an emergency power-off assembly. The high-voltage box includes a main power supply control circuit and an emergency stop circuit. A switch is provided on the main power supply control circuit. The emergency stop circuit is used to disconnect the switch when an emergency event occurs, so as to disconnect the main power supply control circuit. The emergency power-off assembly includes a plurality of emergency controls connected to the emergency stop circuit, and an emergency control is respectively provided on the first operating panel arranged at the ship's control console and electrically connected to the high-voltage box, on the high-voltage box, and on the battery compartment of the ship. This scheme forms a plurality of emergency paths through the above-mentioned plurality of emergency controls and emergency circuits, which is convenient for users to select a more convenient way to urgently cut off the power to the battery module, and can effectively improve the power supply reliability and safety of the entire ship's electric energy system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the architecture of a traditional electric vehicle lithium battery system provided by the utility model;

[0025] Figure 2a and Figure 2b A schematic diagram of the architecture of the ship electric energy system provided by the utility model;

[0026] Figure 3a A schematic diagram of the structure of the energy storage battery in the battery module provided by the utility model;

[0027] Figure 3b A schematic diagram showing the principle of voltage balancing control of a cell in an energy storage battery provided by the utility model;

[0028] Figure 4 A schematic diagram of the circuit connection between the emergency power-off component and the battery module provided by the utility model;

[0029] Figure 5 A schematic diagram of the structure of the first operating panel provided by the utility model;

[0030] Figure 6 A result schematic diagram of the second operating panel provided by the utility model;

[0031] Figure 7 This is a topological diagram of the voltage conversion module provided by the utility model for powering various types of equipment. DETAILED DESCRIPTION

[0032] At present, the lithium battery system architecture design on new energy ships is mainly converted from industries such as land-based electric vehicles. However, if the lithium battery system configured on the ship is directly like Figure 1 The electric vehicle lithium battery system shown uses a high-voltage box that also serves as a load distribution box on board. The component selection and circuit design inside the high-voltage box cannot meet the safety protection requirements under the conditions of large ship battery capacity, high voltage level (voltage needs to be in the range of DC540~DC1000V) and large load power demand of the entire ship.

[0033] In addition, to ensure the safety of ship operations, the design specifications and standards for the control, monitoring, safety alarm, fire protection, etc. of the lithium battery system on ships are different from those for lithium battery systems used in electric vehicles, so the lithium battery system of electric vehicles cannot fully meet the current design requirements of new energy ships. From the above, it is urgent to propose a lithium battery system architecture design that can meet the requirements of various ship-related specifications and has higher safety.

[0034] To this end, the utility model is committed to providing an electric energy system architecture for green and intelligent ships, such as a lithium battery system architecture, and designs the control, monitoring, alarm and fire protection of the lithium battery system in accordance with the relevant specifications and standards issued for ships, to ensure the safety and reliability of the lithium battery system as the main power source of new energy ships. At the same time, according to the characteristics of the new energy ship power distribution system itself, the number of parallel battery clusters and voltage levels of the lithium battery system are reasonably set. The lithium battery system designed in this application realizes energy distribution control, charging control, etc. by exchanging information with the ship's energy management system (EMS), thereby realizing intelligent management of the charging and discharging of the entire lithium battery system.

[0035] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described clearly and completely below in conjunction with the accompanying drawings and embodiments. It is particularly noted that the following embodiments are only used to illustrate the present invention and do not limit the scope of the present invention. It is therefore clear that the embodiments described below are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0036] In addition, in the description of the specification, claims and the above-mentioned drawings of the present utility model, unless otherwise clearly stipulated and limited, terms such as "connection", "connected" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection or an integral connection; or, it can also be a mechanical connection, an electrical connection, or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. In addition, the descriptions such as "first" and "second" in the text of the present utility model are used to distinguish different devices, devices, modules, etc., and do not represent the order of precedence, nor do they limit "first" and "second" to be different types. The term "or / and" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example: A or / and B, indicating that A can exist alone, A and B can exist at the same time, and B can exist alone; the character " / " in this application generally indicates that the objects associated with each other are in an "or" relationship. It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a system including a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such a system. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the system including the element.

[0037] The utility model scheme is described in detail below.

[0038] The utility model provides a ship electric energy system. For example, Figure 2a A simplified structural diagram of a ship electric energy system provided by an exemplary embodiment of the utility model, Figure 2b The electrical topology diagram of the ship power system provided by the exemplary embodiment of the utility model is as follows. Figure 2a As shown, the ship power system provided by the utility model includes: at least one set of power supply components. Any one of the at least one set of power supply components includes: a battery module 1, a high-voltage box 2, a first operating panel 3 (also called a battery remote operating panel) and an emergency power-off component ( Figure 2a For example, one set of power supply components includes a battery module 1, a high voltage box 21, a battery remote operation panel 31 and an emergency power-off component. Figure 2a An example is shown in which the ship electrical energy system includes two sets of power supply components.

[0039] The battery module 1 includes a plurality of rechargeable energy storage batteries. The energy storage batteries may be, but are not limited to, lithium batteries, which may be lithium iron phosphate batteries with a safety level of 2, and the cells in the lithium iron phosphate batteries may be square aluminum shell lithium iron phosphate battery cells with a rated voltage of 3.2V DC and a large capacity of 230Ah.

[0040] Figure 3a The structure example of the energy storage battery provided by the utility model is shown. Figure 3a As shown, the energy storage battery includes: a plurality of battery cells A. The plurality of battery cells A are connected in series in sequence, and one end of the plurality of battery cells A connected in series is electrically connected to the positive charge and discharge electrode of the energy storage battery, and the other end is electrically connected to the negative charge and discharge electrode of the energy storage battery. The present embodiment does not limit the number of the plurality of battery cells A. Optionally, the number of the plurality of battery cells A may be 16. In this case, the energy storage battery adopts a 1P16S structure (i.e., 1 in parallel and 16 in series, 16 battery cells connected in series), and the capacity of the energy storage battery may be 51.2VDC (Direct Current Voltage), 230AH (milliamperes), 11.776KWH (kilowatt-hours), and the weight of the energy storage battery is less than or equal to 100kg. Considering that due to certain factors (such as manufacturing process, use environment, charge and discharge imbalance, etc.), the voltage of each battery cell in the plurality of battery cells A may be different, causing uneven battery cell voltage, resulting in a decrease in the performance of the energy storage battery. In order to achieve voltage balance control of the battery cells, as shown in FIG. Figure 3bAs shown, a voltage balancing circuit is also connected in parallel at both ends of each battery cell, and the voltage balancing circuit includes a resistor and a switch connected in series. Among them, the resistor in the voltage balancing circuit is used for shunting to consume the excess voltage of the battery cell when the voltage of the battery cell is too large, so as to achieve the balance of the battery voltage. The opening and closing of the switch in the voltage balancing circuit can make the voltage balancing circuit open and closed. For example, the voltage balancing circuit connected in parallel at both ends of the battery cell A1 includes a resistor R1 and a switch S1, and the switch S1 is generally in an open state. When the first monitoring unit 41 in the energy storage battery detects that the voltage difference between the voltage of the battery cell A1 and the voltage of other batteries is too large, it can be determined that the battery cell A1 has a voltage imbalance, and the switch S1 is controlled to be closed, so that the voltage balancing circuit connected in parallel at both ends of the battery cell A1 is turned on. At this time, the current originally flowing through the battery cell A1 will be shunted at the connection point e, and a part of the current I1 will flow into the voltage balancing circuit, so as to realize the voltage division through the resistor R1 to consume a part of the voltage of the battery cell A1, so as to achieve the purpose of voltage balancing between the battery cell A1 and other batteries.

[0041] It should be noted that when the voltage difference between the voltage of the cell A1 and the voltage of other cells is greater than or equal to a preset threshold, it is determined that the voltage difference is too large and the cell A1 has voltage imbalance. In addition, the voltage balance control of the cells can be completed by the balance monitoring module in the first monitoring unit 41.

[0042] From the above content, the energy storage battery also includes: a voltage balancing circuit. A voltage balancing circuit is connected in parallel to both ends of each battery cell in the energy storage battery. The voltage balancing circuit is used to divide the voltage of the corresponding battery cell. Optionally, the voltage balancing circuit includes: at least one resistor and a switch connected in series. For a detailed description of the role of the resistor and the switch in the voltage balancing circuit, please refer to the combined Figure 3b Description of relevant content.

[0043] Further, see Figure 3a, the energy storage battery also includes: a first management module. The first management module is mainly used to detect the state of the energy storage battery, such as the voltage and temperature of the battery cells in the energy storage battery. In specific implementation, the first management module includes a first monitoring unit (Battery Monitoring Unit, battery measurement unit BMU) 41 and a second monitoring unit (Temperature Monitoring Unit, temperature measurement unit TMU) 42. The first monitoring unit 41 is mainly used to collect, monitor and balance the voltage and temperature of the battery cells in the energy storage battery. The second monitoring unit 42 is mainly used to collect and monitor the excessive temperature of the battery cells. The purpose is to make the detection of the normal temperature and excessive temperature of the single battery cells in the battery independent of each other, to achieve an independent over-temperature protection function, and to avoid battery cell safety problems caused by overheating of the battery cells. Thus, the first monitoring unit 41 is used to monitor the temperature and voltage of the multiple battery cells, and control the disconnection and conduction of the corresponding voltage balancing circuit according to the voltage of the multiple battery cells; the second monitoring unit 42 is electrically connected to the first monitoring unit 41, and is used to monitor the temperature of the target battery cell whose temperature is greater than the first threshold among the multiple battery cells, and activate the over-temperature protection mechanism for the target battery cell according to the monitored temperature of the target battery cell. For example, when it is detected that the temperature of the target battery cell is greater than or equal to the second threshold (such as 60°C), the second monitoring unit can activate the corresponding over-temperature protection mechanism to stop the target battery cell from working for a period of time or activate the corresponding heat dissipation device for the target battery cell to dissipate heat; wherein the second threshold is greater than the first threshold.

[0044] Of course, the first monitoring unit 41 can also realize other monitoring functions, such as monitoring the current of the battery cell, etc., which is not specifically limited here.

[0045] The information monitored by the first monitoring unit 41 and the second monitoring unit 42 can be sent to the second management module in the high-voltage box 2 through a corresponding communication bus, such as a controller area network bus (CAN, Controller Area Network), etc. The description of the second management module will be described in detail when the high-voltage box 2 is introduced in detail below.

[0046] From the above content, in this embodiment, each of the multiple energy storage batteries in the battery module 1 is correspondingly configured with a first management module, and the first management module is used to monitor the state of the energy storage battery (such as the voltage, temperature, current, etc. of each battery cell in the energy storage battery), and perform adaptive management on the battery cells in the energy storage battery according to the monitored energy storage battery state, such as controlling the disconnection and conduction of the voltage equalization circuit of the battery cell, starting the over-temperature protection mechanism for the battery cell, etc.

[0047] Optionally, the battery module 1 may be composed of 10 energy storage batteries connected in series, thereby forming a battery structure of 1P160S (i.e., 1 in parallel and 10*16 in series, 10 is the number of energy storage batteries, and 16 is the number of cells in one energy storage battery). Figure 2a The battery module 1 shown in FIG. 1 is composed of 10 energy storage batteries B1 to B10 connected in series. Taking energy storage battery B1 and energy storage battery B2 as an example, when connected in series, the communication input terminal (such as Figure 2b The TMU communication input terminal T+ shown in FIG. 1 is electrically connected to the communication output terminal ( Figure 2b The TMU communication output terminal T- shown in FIG. 1 ), the communication input terminal of the second monitoring unit 42 on the energy storage battery B1 (such as Figure 2b The BMU communication input terminal T+ shown in FIG. 1 is electrically connected to the communication output terminal (eg, Figure 2b The BMU communication output electrode T- shown in the figure, the charging and discharging positive electrode on the energy storage battery B1 is electrically connected to the charging and discharging negative electrode on the energy storage battery B2, and the heating positive electrode on the energy storage battery B1 is electrically connected to the heating negative electrode on the energy storage battery B2.

[0048] The high voltage box 2 is electrically connected to the corresponding battery module 1, and is mainly used to realize the functions of monitoring, protecting, and controlling the charging and discharging process of the battery module 1. The high voltage box 2 and the corresponding battery module 1 are both arranged in the battery compartment of the ship.

[0049] See Figure 4 and Figure 2b The high voltage box 2 structure example diagram shown in FIG. The high voltage box 2 includes: a power supply main control circuit.

[0050] In one specific example, see Figure 2b, the power supply main control circuit includes a first branch and a second branch. The first branch includes a main positive isolating switch, a main positive fuse, and a main positive relay connected in series in sequence; wherein the main positive isolating switch is electrically connected to the charging and discharging positive pole of the battery module through the first positive interface on the high-voltage box 2, and the main positive relay is electrically connected to the positive pole of the DC distribution board through the second positive interface on the high-voltage box 2. Furthermore, the first branch also includes a pre-charging circuit connected in parallel with the main positive relay, and the pre-charging circuit includes a pre-charging resistor and a pre-charging relay connected in series. The second branch includes a main negative isolating switch, a main negative fuse, a shunt, an emergency stop relay, and a main negative relay connected in series in sequence; wherein the main negative isolating switch is electrically connected to the charging and discharging negative pole of the battery module through the first negative interface on the high-voltage box 2, and the main negative relay is electrically connected to the negative pole of the DC distribution board through the second negative interface on the high-voltage box 2. The above-mentioned main positive isolating switch and main negative isolating switch are used to cut off the electrical connection between the high-voltage box 2 and the battery module (i.e., cut off the power transmission between the high-voltage box 2 and the battery module 1) when the high-voltage box 2 is under maintenance. It should be noted that, Figure 2b The main positive relay shown includes Figure 4 The main positive relay K2 and its main control normally open contact K2-1 are shown. Similarly, Figure 2b The main negative relay shown includes Figure 4 The main negative relay K3 and its main control normally open contact K3-1 shown; Figure 2b The main negative relay shown includes Figure 4 The pre-charging relay K1 and its main control normally open contact K1-1 are shown.

[0051] Furthermore, the high-voltage box 2 also includes an emergency stop circuit. The emergency stop circuit is used to disconnect the switch provided on the power supply main control circuit when an emergency occurs, so as to disconnect the power supply main control circuit. The switch provided on the power supply main control circuit will be described in detail below.

[0052] The above emergency stop circuit includes an emergency stop trigger unit and an emergency stop response unit. Figure 4, the emergency stop trigger unit includes an emergency stop relay K8 and multiple emergency controls (such as emergency control Bu1, emergency control Bu2, emergency control Bu3), and the emergency stop relay K8 and the multiple emergency controls are connected in series. In one example, an emergency control is respectively provided on the high-voltage box 2, the battery compartment and the first operating panel 3. Optionally, the emergency control can be in the form of a button, such as a rotary button or a push button. The emergency stop response unit includes: an emergency stop normally open contact K8-1 of the emergency stop relay K8 and at least one main control relay, and the emergency stop normally open contact K8-1 is connected in series with at least one main control relay. The main control normally open contact of at least one main control relay is a switch set on the power supply main control circuit. When any one of the above-mentioned multiple emergency controls is triggered (such as pressed), an emergency event is generated, causing the emergency stop relay K8 to lose power. At this time, the emergency stop normally open contact K8-1 of the emergency stop relay K8 is disconnected, thereby causing at least one main control relay to lose power, and the main control normally open contact of at least one main control relay is disconnected (that is, the switch set on the power supply main control circuit is disconnected).

[0053] Optionally, the at least one main control relay includes at least one of the main positive relay K2 and the main negative relay K3, and correspondingly, at least one of the normally open contact K2-1 of the main positive relay K2 and the normally open contact K3-1 of the main negative relay K3 is a switch provided on the power supply main control circuit. Optionally, the at least one main control relay may also include a pre-charge relay K1, and the switch provided on the power supply main control circuit may also include the normally open contact K1-1 of the pre-charge relay K1. As an example, Figure 4 As shown, the main control relay includes a main positive relay K2, a main negative relay K3 and a pre-charge relay K1, and the emergency stop normally open contact K8-1 is connected in parallel with each of the main positive relay K2, the main negative relay K3 and the pre-charge relay K1. When any one of the multiple emergency controls is triggered, the emergency stop relay K8 loses power, and the emergency stop normally open contact K8-1 of the emergency stop relay K8 is disconnected, so that the main positive relay K2, the main negative relay K3 and the pre-charge relay K1 are all de-energized, and the main control normally open contacts corresponding to the main positive relay K2, the main negative relay K3 and the pre-charge relay K1 are all disconnected.

[0054] The above-mentioned multiple emergency controls are respectively arranged on the high-voltage box 2, the battery compartment and the first operating panel 3. Multiple emergency paths are formed through multiple emergency controls and emergency circuits. Users can control them locally or remotely, so that users can choose a more convenient way to urgently cut off the power to the battery module, which can effectively improve the power supply reliability and safety of the entire ship's power system.

[0055] Furthermore, the high voltage box 2 may also include: a heating circuit, a voltage conversion circuit, and a second management module.

[0056] One end of the heating circuit is electrically connected to the heating positive electrode of the battery module, and the other end of the heating circuit is electrically connected to the heating negative electrode of the battery module. The heating circuit is used to heat the battery module when the ambient temperature of the battery module is lower than the temperature threshold. Wherein, the ambient temperature is collected by the ambient temperature acquisition device, so that: the ship power system provided by the utility model also includes an ambient temperature acquisition device. The ambient temperature acquisition device is used to collect the ambient temperature of the battery module. And, the second management module is also connected to the ambient temperature acquisition device. The second management module is used to receive the ambient temperature sent by the ambient temperature acquisition device, and when it is determined that the ambient temperature is lower than the temperature threshold, the heating circuit is controlled to heat the battery module. Specifically, the normally open contacts of the relays (such as the heating positive relay and the heating negative relay) in the heating circuit are closed to make the heating circuit conductive, thereby realizing heating of the battery module; wherein, the normally open contacts of the relays in the heating circuit are usually kept disconnected under normal circumstances (ambient temperature height temperature threshold).

[0057] Optionally, the heating circuit includes a heating fuse, a heating positive relay and a heating negative relay. The heating fuse and the heating positive relay are connected in series, and one end of the heating fuse is also electrically connected to the heating positive electrode of the battery module, and one end of the heating positive relay is also electrically connected to the voltage conversion fuse (DCDC (DC-to-DC converter, direct current-to-direct current conversion) fuse) in the voltage conversion circuit. The connection point of the heating positive relay and the voltage conversion fuse (i.e., the connection point of the heating circuit and the voltage conversion circuit) is also electrically connected to the connection point of the pre-charging circuit and the main positive relay. One end of the heating negative relay is electrically connected to the heating negative electrode of the battery module, and the other end is electrically connected to the second negative interface on the high-voltage box.

[0058] One end of the voltage conversion circuit is electrically connected to the positive pole of the battery module for charging and discharging. In addition, the other end of the voltage conversion circuit is electrically connected to the second management module. In a specific example, the voltage conversion circuit includes: a voltage conversion fuse (DCDC fuse), a voltage conversion relay (DCDC relay) and a voltage conversion module. One end of the DCDC fuse is electrically connected to the positive pole of the battery module for charging and discharging through the main positive fuse and the main positive isolation switch, and the other end of the DCDC fuse is electrically connected to the positive input terminal DCin+ of the voltage conversion module through the DCDC relay. The negative input terminal DCin- of the voltage conversion module is electrically connected to the negative pole of the battery module for charging and discharging through the shunt, the main negative fuse and the main negative isolation switch, the positive output terminal DCout+ of the voltage conversion module is electrically connected to the negative input terminal of the second management module, and the negative output terminal DCin- of the voltage conversion module is electrically connected to the negative input terminal of the second management module. In addition to the above, in some other embodiments, the other end of the voltage conversion circuit (including the positive output terminal DCout+ and the negative output terminal DCout- of the voltage conversion module) is also electrically connected to the power management device EMS disposed on the DC distribution board. The above-mentioned voltage conversion circuit is used to convert the voltage provided by the battery module into a set voltage (low voltage) and output it to the second management module and the power management device EMS to power them.

[0059] The second management module is electrically connected to the first management modules (including the first monitoring unit BMU and the second monitoring unit TMU) corresponding to the multiple energy storage batteries in the battery module, and is also electrically connected to the electric energy management device EMS on the DC distribution board. The second management module is used to perform adaptive management on the battery module according to the monitored state of the energy storage battery and / or the communication information with the electric energy management device EMS. In addition, in a specific example, the second management module includes: a third monitoring unit (which is a battery control unit BCU (Battery Control Unit)) and a fourth monitoring unit (which is a temperature control unit TCU (Temperature Control Unit) Uni). The third monitoring unit BCU is electrically connected to the first monitoring units BMU corresponding to the multiple energy storage batteries in the battery module through a CAN bus, for example. The first monitoring unit BMU can send the energy storage battery status of the corresponding energy storage battery monitored by itself to the third monitoring unit BCU. And, the third monitoring unit BCU is mainly used to perform adaptive management on the battery module 1 according to the monitored energy storage battery status and / or the communication information with the electric energy management device EMS; wherein the energy storage battery status includes but is not limited to the total voltage and total current of the energy storage battery, the voltage, temperature, current of each cell in the energy storage battery, etc. The third monitoring unit BCU determines the energy storage battery status based on the energy storage battery status monitored by the first monitoring unit BMU. The total voltage, total current, total temperature, etc. of the fixed battery module are automatically and intelligently controlled to pre-charge, thermal management (such as by controlling the conduction and disconnection of the heating circuit), charge and discharge, etc. of the battery module. In addition, the third monitoring unit BCU can also control the start, stop, emergency stop, alarm output, etc. of the battery module according to the communication information with the electric energy management device EMS. The fourth monitoring unit TCU is connected to the second monitoring unit TMU corresponding to the multiple energy storage batteries in the battery module through the CAN bus. In addition, the fourth monitoring unit TCU is mainly used to realize independent collection of excessively high ambient temperatures, that is, when the ambient temperature is too high (such as greater than or equal to the preset ambient temperature), the collection of ambient temperature is started.

[0060] It should be noted that the ship power system provided by the utility model also includes a battery management device (also called a battery management system BMS (Batrery Management System)). The battery management device BMS includes the first management module in the aforementioned energy storage battery and the second management module in the high-voltage box, wherein the first management module is the primary management module of the battery management device BMS, and the second management module is the secondary management module of the battery management device BMS. The battery management device BMS adopts a secondary management architecture with a simple configuration, which can meet the functional design requirements for the ship battery management module BMS, and can effectively improve the power supply reliability and safety of the entire ship power system.

[0061] In addition, in order to realize remote power on and off control, status detection and emergency cut-off operation of the battery module 1, the utility model provides a first operating panel 3 on the ship's control console, and the first operating panel 3 is electrically connected to the high-voltage box 2.

[0062] Figure 5 FIG. 2 shows an example of a structure of the first operating panel 3. Figure 5 , an emergency control 30, a display screen 31, and a first power-on and power-off control 32 are provided on the first operating panel 3. In an emergency, the driver can directly operate the emergency control 30 to remotely emergency stop the ship. For detailed descriptions of the form and function of the emergency control 30, please refer to the relevant content in other embodiments. The display screen 31 can be a liquid crystal display screen for displaying various status information of the battery management device BMS. The first power-on and power-off control 32 can be used to remotely power on and off the battery management device BMS. In addition, other functional components are also provided on the first operating panel 3, such as a mute control 33, an alarm device (including a sound alarm device 341 and a fault alarm device 342) and various status indicator lights (such as a low power indicator light 35, an over-temperature indicator light 36, a charging indicator light 371, a discharge indicator light 372, a heating indicator light 38, a BMS operation indicator light 39, etc.). The mute control 33 can be in the form of a button type or a rotary type. By operating the mute control 33, the muffler on the ship can be controlled to reduce or eliminate the ship operation noise. The sound alarm device 341 is used to output various warning sounds, such as outputting a warning sound for indicating that the battery module is low in power, or outputting a warning sound for indicating a fault in the battery management device, the energy storage battery, etc. The status indicator light is used to indicate the status of the corresponding component (such as working status, switch status, fault status, operating status, etc.) by displaying lights of different colors and / or different brightness. For example, the low power indicator light 35 displays red, which can indicate that the total power of the corresponding battery module is less than the power threshold, and the battery module is in a low power state.

[0063] The power on and off control of the battery management device BMS can be realized remotely through the first power on and off control 32 on the first operation panel 3, or can also be realized by setting Figure 6 The second up and down electric control unit 42 on the second operating panel 4 shown is implemented remotely, wherein the second operating panel 4 is arranged on the main body of the high-voltage box 2. That is, the high-voltage box 2 is also provided with a second operating panel 4.

[0064] Specifically, see Figure 6A structural example of the second operating panel 4 is shown, and the second operating panel 4 is provided with a second power-on / off control 42. In addition, the second operating panel 4 is also provided with an operating panel selection control 41 (also referred to as a remote / short range selection switch), through which the first operating panel 3 or the second operating panel 4 can be selected when the power-on / off control of the battery management device BMS is performed. In other words, the operating panel selection control 41 can be used to select whether the first power-on / off control 32 or the second power-on / off control 42 is activated. Specifically:

[0065] When the operation panel selection control 41 is in the first gear position (the "remote" gear position), the first operation panel 3 set on the driving console is an available operation panel. By operating the first up and down power control 32 on the first operation panel 3 and using the electric energy management device EMS, the battery management device BMS can be powered off, dormant, and powered on to wake up. For example, the first up and down power control 32 is a switch button, which has an open gear (ON gear) and a closed gear (OFF gear). When the first up and down power control 32 is placed in the ON gear, the battery management device BMS wakes up. After the battery management device BMS wakes up, it can further be powered on by triggering the corresponding control on the electric energy management device EMS, so that the battery management device BMS enters the wake-up power-on working mode; when the first up and down power control 32 is placed in the OFF gear, the battery management device BMS sleeps. After the battery management device BMS sleeps, similarly, it can further be powered off by triggering the corresponding control on the electric energy management device EMS, so that the battery management device BMS enters the sleep power-off mode.

[0066] It should be supplemented here that: the power management device EMS has a touch screen, and the function page displayed on the touch screen displays an up and down power control element. After the battery management device BMS wakes up, the user can operate the up and down power control element (such as clicking operation); accordingly, the power management device EMS responds to the user's triggering operation of the power-on control, and sends the corresponding power-on communication message to the battery management device BMS to control the battery management device BMS to power on. And, after the battery management device BMS sleeps, the user can operate the up and down power control element (such as clicking operation); accordingly, the power management device EMS responds to the user's triggering operation of the up and down power control, and sends the corresponding power-off communication message to the battery management device BMS to control the battery management device BMS to power off. Therefore, the ON gear of the first up and down power control only has a wake-up function for the battery management device BMS, and the OFF gear only has a sleep function for the battery management device BMS. After the battery management device BMS wakes up or sleeps, the power management device EMS needs to send a corresponding communication message to the battery management device BMS to control the power-on or power-off. In addition, when the operation panel selection control 41 is in the first gear position (the "remote" gear position), the function of the second up and down power control 42 on the high-voltage box 2 body (specifically on the second operation panel 4) is invalid.

[0067] When the operation panel selection control 41 is in the second gear position (the "short-range" gear position), the second operation panel 4 provided on the main body of the high-voltage box 2 is an available operation panel, and the second up and down power control 42 on the second operation panel 4 can be operated to control the power-off sleep and power-on wake-up of the battery management device BMS. For example, the second up and down power control 42 is a switch button, which has an open gear (ON gear) and a closed gear (OFF gear). When the second up and down power control 42 is placed in the ON gear, the battery management device BMS directly enters the wake-up and power-on working mode; when the second up and down power control 42 is placed in the OFF gear, the battery management device BMS directly powers off (powers off) and enters the sleep mode. That is, the ON gear of the second up and down power control 42 integrates the wake-up and power-on functions of the battery management device BMS, and the OFF gear integrates the sleep function of the battery management device BMS power-off sleep. In addition, it should be noted that: when the operation panel selection control 41 is in the second gear position (the "short-range" gear position), the power management device EMS controls the power-on and power-off of the battery management device BMS through the corresponding communication message.

[0068] The power-on and power-off management control design method here can effectively realize the rational control of power-on and power-off and ensure the reliability of local and remote control.

[0069] Furthermore, the second operating panel 4 is also provided with a display screen, a mute control, an alarm device (including a sound alarm device and a fault alarm device), and various status indicator lights (such as a low battery indicator light, an over-temperature indicator light, a charging indicator light, a discharging indicator light, a heating indicator light, a BMS operation indicator light, etc.). For detailed descriptions of the above-mentioned controls / devices / indicators, please refer to the relevant content described for the first operating panel 3. Furthermore, the second operating panel 4 is also provided with various external interfaces, such as an ambient temperature acquisition interface (for electrically connecting an ambient temperature acquisition device), a high voltage output interface (including the aforementioned second positive interface and the second negative interface, which can be used to electrically connect a DC distribution board), an external auxiliary power supply interface (for electrically connecting an auxiliary power supply device (such as a lead-acid battery pack), a local / remote emergency cut-off interface (such as for electrically connecting an energy management device EMS), a local / remote operation mode selection interface (such as for electrically connecting a first operating panel and a second operating panel), an RS485 / CAN communication interface (such as for electrically connecting a communication port of an energy management device EMS, a communication port of a battery module (such as a communication output port corresponding to a first monitoring unit BMU, a communication output port corresponding to a second monitoring unit TMU)), and the like.

[0070] The marine electric energy system provided by the present invention may include other functional components in addition to the aforementioned functional components (such as battery modules, high-voltage boxes, operating panels, etc.). The specific components are as follows:

[0071] The new marine power system provided by this embodiment also includes: emergency components. The emergency components include the emergency controls (also called emergency shutdown controls) provided on the high-voltage box 2, the battery compartment (outside the battery compartment body) and the first operating panel 3 as mentioned above. When the ship encounters an emergency, the user (such as the driver) can use the convenient emergency controls to realize emergency power-off of the battery module. In addition, while operating the emergency controls to achieve power outage, visual and / or audible alarms can be realized through the corresponding alarm devices and / or indicator lights on the second operating panel 4 on the high-voltage box 2 body and the first operating panel 3 to provide emergency prompts for other crew members. Obviously, the design of the emergency components here can effectively improve the power supply reliability and safety of the entire marine power system.

[0072] The ship power system provided by the utility model can be powered by a fuel cell in addition to the aforementioned battery module. That is, the ship power system also includes a fuel cell (not shown in the figure). The fuel cell is arranged in the battery compartment and can be, but is not limited to, a hydrogen fuel cell.

[0073] Fuel cells are at risk of flammable gas leakage. In order to avoid explosion hazards caused by flammable gas leakage and to improve ship safety, the ship power system provided by the present embodiment also includes: a gas detection device. The gas detection device is used to detect the concentration of flammable gas in the battery compartment. In a specific example, the gas detection device includes a gas detection monitoring box and a flammable gas detection head. Among them, the flammable gas detection head is arranged in the battery compartment to detect the concentration of flammable gas in the battery compartment; the gas detection monitoring box is arranged outside the battery compartment and is connected to the flammable gas detection head and is also connected to the electric energy management device EMS. The gas detection monitoring box is used to: collect the flammable gas concentration output by the flammable gas detection head, and output a corresponding alarm signal to the electric energy management device EMS when it is determined that the flammable gas concentration is greater than the set concentration threshold. In response to the received alarm signal, the electric energy management device EMS can control the alarm device on the first operating panel 3 and / or the second operating panel 4 to output the corresponding alarm information, and send an emergency cut-off signal to the high-voltage box 2 (that is, Figure 2b The high concentration emergency cut-off signal of the combustible gas shown in the figure) is used to realize the emergency cut-off of the battery module. The aforementioned set concentration threshold may be, but is not limited to, 20% of the lower limit of the combustible gas concentration that can cause an explosion.

[0074] The power management device EMS described in the utility model is arranged to realize the management and control of the power supply of the battery modules and power loads of the whole ship, and is specifically arranged on a distribution board. Therefore, the ship power system provided by the utility model also includes: the power management device EMS, the distribution board (such as Figure 2b The DC distribution board shown in FIG. 2 ). The matching board is also electrically connected to the aforementioned fuel cell, and is also electrically connected to the high-voltage box 2. The power management device EMS is arranged on the distribution board and is communicatively connected to the high-voltage box 2 and the gas detection device. The power management device EMS is used to send an emergency cut-off signal to the high-voltage box 2 when the concentration of the combustible gas is greater than the set concentration threshold, so that the switch provided on the high-voltage power supply main control circuit is disconnected, thereby disconnecting the power supply main control circuit. In addition, the coordination between the power management device EMS and the battery management device BMS can realize the intelligent control and management of the entire ship's power system, and can meet the power supply requirements of various working conditions. For detailed descriptions of the various controls and management of the coordination between the power management device EMS and the battery management device BMS, please refer to the relevant content in other embodiments, which will not be repeated here.

[0075] The working power supply of the battery management device BMS is generally DC24V, DC24V means the direct current voltage is 24V. In the present invention, two power supply circuits are adopted to supply power to the battery management device BMS, one of which is supplied by the voltage conversion circuit arranged in the high voltage box 2, and the other is supplied by the voltage conversion circuit arranged in the high voltage box 2. Figure 2bAs shown, power is supplied by a DC24 charging and discharging board (external auxiliary power supply) arranged outside the high-voltage box 2.

[0076] like Figure 7 or Figure 2b As shown, by arranging a voltage conversion circuit (having a voltage conversion module (DCDC module)) in the high-voltage box 2, the high-voltage electricity provided by the battery module can be converted into DC24V to provide to the battery management device BMS, thereby realizing that the DC24V working power supply of the battery management device BMS is taken from the high-voltage box. This method of directly taking power from the inside of the high-voltage box to power the battery management device BMS, compared with the method of adding an AC / DC module (AC / DC rectifier) ​​in the high-voltage box to power the battery management device BMS, has fewer devices passed through during the power transmission process and higher stability.

[0077] Among them, a specific implementation scheme for powering the battery management device BMS by adding an AC / DC module (AC / DC rectifier) ​​in the high-voltage box is as follows: the battery power is output to the 230V daily power distribution board, and the 230V of the daily power distribution board is converted to DC24V by the AC / DC module before being supplied to the battery management device BMS. It is obvious that in the above method, the power needs to pass through multiple devices before being input to the battery management device BMS, and there will be many factors that affect the stability of power transmission, resulting in poor stability.

[0078] Based on the above content, any set of power supply components included in the ship power system provided by the utility model also includes: an auxiliary power supply device. The auxiliary power supply device is electrically connected to the high-voltage box and is used to provide auxiliary external power to the high-voltage box. In a specific example, Figure 2b As shown, the auxiliary power supply device includes: a lead-acid battery pack including a plurality of lead-acid batteries, the lead-acid battery pack is electrically connected to a DC24V charge and discharge board, and the DC24V charge and discharge board is electrically connected to a high-voltage box. The DC24V charge and discharge board can convert the electric energy provided by the lead-acid battery pack into DC24V and then provide it to a second management module (a part of the battery management device BMS) in the high-voltage box.

[0079] Furthermore, the ship power system provided by the utility model is also provided with a total minimum power design logic. Specifically, the battery management device BMS in each set of power supply components sends the battery power (SOC (State of Charge) value) of the corresponding battery module to the power management device EMS through CAN communication, and the power management device EMS will add up the battery power of the battery modules in each set of battery packs received. When the total power obtained by the addition is less than the set power threshold, the power management device EMS will provide a switch signal to the SOC alarm panel on the console. The SOC alarm panel is on the same console as the aforementioned first operating panel 3. In response to the received switch signal, the SOC alarm panel will output an audible and visual alarm message indicating that the total power of the entire ship is low, reminding the driver that he needs to take countermeasures. From the above content, the ship power system provided by the utility model also includes: a power alarm device (such as Figure 1 The power alarm device is arranged at the driving console and is electrically connected to the power management device EMS, and is used to output low power warning information according to a switch signal provided by the power management device EMS; wherein the switch signal is provided by the power management device EMS when it is determined that the total battery power of the battery modules in at least two battery packs in the system is less than a set power threshold.

[0080] The design of the minimum power alarm device function here enables the visual and auditory alarm signals to be issued when the total power of the battery system, which serves as the ship's main power source, reaches the minimum power required for normal operation, making it easier for the driver to take reasonable countermeasures against low power and avoid the dangers caused by low power. Therefore, it can further improve the power supply reliability and safety of the entire ship's power system.

[0081] It should be noted that in the ship power system provided by the utility model, a specific implementation scheme may include a total of 2 sets of battery modules 1, and the maximum total power of the 2 sets of battery modules 1 may be, for example, 235Kwh, and accordingly, the set power threshold (the minimum allowable power value) preset in the power management device EMS may be, for example, 60Kwh.

[0082] In addition, the ship power system provided by the utility model may also include: a charging socket box (such as Figure 2b The DC charging socket box is electrically connected to the distribution board. The charging socket box is used to connect to the charging pile at the shore (such as Figure 2b The DC charging pile shown is electrically connected to charge the batteries in the battery module.

[0083] The utility model further provides a ship. The ship can be a pure battery-powered ship or a hybrid power ship. Specifically, the ship can be a commercial ship, a passenger ship, a yacht, a sailboat, a kayak, etc. The ship provided by the utility model includes the ship power system provided by other embodiments. For details of the ship power system, please refer to the above other embodiments in combination with Figures 2a to 7 Description of relevant content.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A ship electric energy system, characterized in that: include: Battery module; a high-voltage box, electrically connected to the battery module, and both the high-voltage box and the battery module are arranged in the battery compartment of the ship; the high-voltage box includes a power supply main control circuit and an emergency stop circuit, the power supply main control circuit is provided with a switch, and the emergency stop circuit is used to disconnect the switch in the event of an emergency, so as to disconnect the power supply main control circuit; A first operating panel, arranged at the ship's control console and electrically connected to the high-voltage box; The emergency power-off component includes the emergency stop circuit and a plurality of emergency controls connected to the emergency stop circuit. The high-voltage box, the battery compartment and the first operating panel are each provided with one of the emergency controls.

2. The ship electric energy system according to claim 1, characterized in that: The emergency stop circuit includes an emergency stop trigger unit and an emergency stop response unit; The emergency stop trigger unit includes an emergency stop relay and the plurality of emergency controls connected in series, the emergency stop response unit includes an emergency stop normally open contact of the emergency stop relay and at least one main control relay, the emergency stop normally open contact is connected in series with the at least one main control relay, and the switch is a main control normally open contact of the at least one main control relay; When any one of the emergency controls is triggered, the emergency stop relay loses power, the emergency stop normally open contact is disconnected, the at least one main control relay loses power, and the main control normally open contact is disconnected.

3. The ship electric energy system according to claim 2, characterized in that: The at least one main control relay includes at least one of a main positive relay and a main negative relay.

4. The ship electric energy system according to claim 3, characterized in that: The at least one master control relay further comprises a pre-charge relay.

5. The ship electric energy system according to claim 1, characterized in that: The system also includes: a fuel cell, a gas detection device, a switchboard and an electric energy management device; The battery module is electrically connected to the distribution board via the high-voltage box, and the fuel cell is arranged in the battery compartment and electrically connected to the distribution board; The power management device is arranged on the distribution board and is communicatively connected with the high-voltage box and the gas detection device. The gas detection device is used to detect the concentration of combustible gas in the battery compartment. The power management device is used to send an emergency cut-off signal to the high-voltage box to disconnect the switch when the concentration of combustible gas is greater than a set concentration threshold.

6. The ship electric energy system according to claim 5, characterized in that: The system also includes a battery management device; The battery management device comprises a first management module and a second management module; the battery module comprises a plurality of rechargeable energy storage batteries, one of the energy storage batteries in the battery module is correspondingly configured with one first management module, and the first management module is used to monitor the state of the energy storage battery; the second management module is arranged in the high-voltage box and is electrically connected to the power management device and the first management modules corresponding to the plurality of energy storage batteries respectively; the second management module is used to perform adaptive management on the battery module according to the monitored state of the energy storage battery and / or the communication information with the power management device; The high-voltage box further comprises a voltage conversion circuit, one end of which is connected to the positive electrode of the battery module for charging and discharging, and the other end of which is connected to the second management module; The system further comprises an auxiliary power supply device, and the auxiliary power supply device is connected to the second management module.

7. The ship electric energy system according to claim 6, characterized in that: The other end of the voltage conversion circuit is also connected to the power management device.

8. The marine electric energy system according to claim 6, wherein the high-voltage box is provided with a second operating panel, the second operating panel is provided with an operating panel selection control, the operating panel selection control has a first gear position and a second gear position; the first operating panel is also provided with a first up and down power control, the second operating panel is provided with a second up and down power control; When the operation panel selection control is in the first gear position, the first operation panel is an available operation panel, and the battery management device can be powered off and dormant and powered on and awakened by operating the first power-on and power-off control and utilizing the power management device; When the operation panel selection switch is in the second gear position, the second operation panel is an available operation panel, and the battery management device can be powered off and dormant or powered on and awakened by operating the second power-on and power-off controls.

9. The ship electric energy system according to claim 6, characterized in that: The system further comprises an ambient temperature acquisition device in communication with the second management module, wherein the ambient temperature acquisition device is used to acquire the ambient temperature of the battery module; The high-voltage box also includes a heating circuit, one end of which is connected to the heating positive electrode of the battery module, and the other end of which is connected to the heating negative electrode of the battery module. The heating circuit is used to heat the battery module when the ambient temperature is lower than a temperature threshold.

10. A ship, characterized in that: A ship electrical energy system comprising any one of claims 1 to 9.

Images