Self-energizing battery power system of electric ship and electric heavy truck and application

Abstract

The invention provides a self-energizing battery power system of an electric ship and an electric heavy truck and application. The self-energizing battery power system of the electric ship or the electric heavy truck is composed of 1-P self-energizing power battery domains. The self-energizing power battery domain is formed by connecting 1-N self-energizing power battery clusters, and each self-energizing power battery cluster is formed by electrically connecting 1-M self-energizing power battery packs. Each self-energizing power battery pack is composed of a charger unit, a controller and a battery pack unit. The input end of the charger unit receives three-phase alternating current, alternating current power from the shore power side is converted into charging direct current power, and self-energizing charging is carried out on the battery pack unit. Through the design of the invention, a shore-based charging pile does not need to be built, and the inconvenience of docking, charging and energy supplementing when a large-section direct-current charging cable of the shore-based charging pile is hoisted to a ship is avoided; and meanwhile, the problem that protocols of different shore-based charging piles or different national shore-based charging piles are difficult to unify is solved, and self-energizing charging of the electric ship can be achieved as long as electric energy exists.

Description

Technical Field

[0001] The present invention relates to the technical field of battery power systems for electric ships and electric heavy trucks, and in particular to a self-energizing battery power system for electric ships and electric heavy trucks and applications thereof. Background Art

[0002] At present, with the gradual development of zero-emission ships and power battery technology, electric ships are gradually promoted in the fields of shipping and river transportation, and the electric ship market is gradually expanding. The maximum capacity of the ship's power battery system has reached several megawatt-hours, and battery recharge is a key issue. For example, taking the power battery capacity of a small ship as an example, the Ampere (such as the Ampere) has reached 1.86MWh. Each sailing time is 20 minutes, and it takes 10 minutes to complete the recharge during the port.

[0003] At present, the charging and energy replenishment of ship battery power systems mainly uses shore-based charging piles, which lead out DC charging lines and charging interfaces from the charging piles, send them to the ship and connect them to the charging port of the power battery for charging. The charging current of small ships alone exceeds thousands of amperes, and the cross-sectional area of ​​the DC charging cable connected between the shore-based charging pile and the ship power battery can reach thousands of square millimeters. A long-arm crane is required to send the DC charging cable from the shore to the ship and connect it to the power battery system for energy replenishment, which is very inconvenient in actual operation. In addition, due to the lack of unified hardware interface standards and software communication protocols for ship charging piles, and the low power of existing passenger car charging piles, it is difficult to ensure charging and energy empowerment along the way, which affects the promotion and development of electric ships.

[0004] The power battery systems for large ships are at the level of tens or even higher megawatt hours (MWh). It is obviously insufficient to borrow or transplant the experience and methods of charging piles for electric vehicles.

[0005] In addition, when the power battery of an electric heavy truck (electric heavy truck) reaches or exceeds megawatt-hours (MWh), the same problem as the charging and empowerment of electric ships exists. The current charging method for electric vehicles can no longer meet the fast charging and empowerment needs of electric heavy trucks. Summary of the invention

[0006] In view of the technical problems and challenges in the prior art, the purpose of the present invention is to provide a self-energizing battery power system for electric ships / electric heavy trucks. By designing a self-energizing battery pack that integrates a charger unit, a controller, and a power battery unit and thereby constructing a self-energizing battery power system, the battery power bus of an electric ship or an electric heavy truck is connected to construct a battery power system for an electric ship or an electric heavy truck to meet the fast charging and energizing needs of electric heavy trucks and electric ships. The design of the present invention does not require the construction of a shore-based charging pile, avoiding the inconvenience of docking charging and energy replenishment when the large-section DC charging cable of the shore-based charging pile is hoisted to the ship; at the same time, it avoids the problem of difficulty in unifying the protocols of different shore-based charging piles or shore-based charging piles in different countries. It only needs to connect the AC power from the shore power side to the ship to realize the self-energizing charging of the electric ship, without relying on other external charging equipment.

[0007] According to a first aspect of the present invention, a self-energizing battery power system for an electric ship is provided, comprising 1 to P self-energizing power battery domains;

[0008] The self-energizing power battery domain is installed in the ship's power battery compartment and consists of 1 to N self-energizing power battery clusters, each of which consists of 1 to M self-energizing power battery packs;

[0009] Wherein, the self-energizing power battery pack is composed of a charger unit, a controller and a battery pack unit to form an integrated unit;

[0010] The power input end of the charger unit is electrically connected to the AC power connected to the ship, converting the AC power into charging DC power to charge the battery unit; the charger unit has built-in charging control software to control the charging process of the battery unit;

[0011] The battery pack unit is composed of one or more battery packs connected in parallel, each battery pack is composed of multiple power batteries connected in series, and the battery pack has built-in BMS battery management software to manage and monitor the charging and discharging process of the power batteries in the group;

[0012] The controller is connected to the charger unit and the battery unit, and controls the operation of the charger unit and the battery unit.

[0013] As an optional embodiment, the charger unit of the self-energizing power battery pack is a bidirectional reversible charger for realizing bidirectional flow of electric energy, including converting AC power into DC charging power for charging and energizing the battery pack unit; or inverting the DC power of the battery pack unit into AC power output.

[0014] As an optional embodiment, a plurality of self-energizing power battery packs are electrically connected in series to form a self-energizing power battery cluster.

[0015] As an optional embodiment, a plurality of self-energizing power battery clusters are electrically connected in parallel to form a self-energizing power battery domain.

[0016] As an optional embodiment, the power battery of the battery pack unit is a liquid electrolyte battery, a condensed electrolyte battery or a solid electrolyte battery.

[0017] As an optional embodiment, the power battery of the battery pack unit is one of a cylindrical power battery, a cubic power battery and an infinite power battery.

[0018] As an optional embodiment, the ship self-energizing battery power system further includes a power transformer having 1 to T secondary side output windings;

[0019] The secondary output winding of the power transformer is electrically connected to the self-energizing power battery pack, and the AC power output by the secondary output winding is sent to the power input terminal of the charger unit.

[0020] As an optional embodiment, the power transformer is installed on the ship.

[0021] As an optional embodiment, the input voltage of the primary side of the power transformer is in the voltage level range of 6kV to 35kV;

[0022] The output voltage of the secondary side of the power transformer is in the voltage level range of 100V to 2000V.

[0023] As an optional embodiment, the self-energizing power battery cluster consists of one self-energizing power battery pack.

[0024] As an optional embodiment, each of the self-energizing power battery clusters is composed of one self-energizing power battery pack; correspondingly, the power transformer can be installed on the shore. As an optional example, the secondary side output winding of the power transformer is one winding, and the output voltage is in the voltage level range of 400V to 2000V.

[0025] In the self-energizing battery power system for electric ships of the above embodiments, the input end of the charger unit receives three-phase AC power from the shore power side, converts the AC power into a charging DC power supply, and performs self-energizing charging on the battery pack unit. There is no need to build a shore-based charging pile, thus avoiding the inconvenience of docking and charging when the large-section DC charging cable of the shore-based charging pile is hoisted to the ship. At the same time, it avoids the problem of difficulty in unifying the protocols of different shore-based charging piles or shore-based charging piles in different countries. As long as there is electricity, self-energizing charging of electric ships can be achieved.

[0026] According to a second aspect of the present invention, an electric ship is provided, which is equipped with the aforementioned self-energizing battery power system for electric ships.

[0027] According to a third aspect of the present invention, a self-energizing battery power system for an electric heavy truck is also provided, which is composed of 1 to P self-energizing power battery domains;

[0028] The self-energizing power battery domain is installed in the vehicle battery compartment and consists of 1 to N self-energizing power battery clusters, each of which consists of 1 to M self-energizing power battery packs;

[0029] Wherein, the self-energizing power battery pack is composed of a charger unit, a controller and a battery pack unit to form an integrated unit;

[0030] The power input terminal of the charger unit is electrically connected to the AC power supply connected to the vehicle, converting the AC power into charging DC power to charge the battery pack unit; the charger unit has built-in charging control software to control the charging process of the battery pack unit;

[0031] The battery pack unit is composed of one or more battery packs connected in parallel, each battery pack is composed of multiple power batteries connected in series, and the battery pack has built-in BMS battery management software to manage and monitor the charging and discharging process of the power batteries in the group;

[0032] The controller is connected to the charger unit and the battery unit, and controls the operation of the charger unit and the battery unit.

[0033] As an optional embodiment, the charger unit of the self-energizing power battery pack is a bidirectional reversible charger for realizing bidirectional flow of electric energy, including converting AC power into DC charging power for charging and energizing the battery pack unit; or inverting the DC power of the battery pack unit into AC power output.

[0034] As an optional implementation, a plurality of self-energizing power battery packs are electrically connected in series to form a self-energizing power battery cluster.

[0035] As an optional implementation, a plurality of self-energizing power battery clusters are electrically connected in parallel to form a self-energizing power battery domain.

[0036] As an optional implementation, the power battery of the battery pack unit is a liquid electrolyte battery, a condensed electrolyte battery or a solid electrolyte battery.

[0037] As an optional implementation, the input terminal of the charger unit of each self-energizing battery pack is connected to an AC power source connected to the vehicle.

[0038] As an optional implementation, each of the self-energizing power battery clusters consists of one self-energizing power battery pack.

[0039] According to a fourth aspect of the purpose of the present invention, an electric heavy truck is also provided, which is equipped with the aforementioned self-energizing battery power system of the electric heavy truck.

[0040] According to a fifth aspect of the present invention, a self-energizing power battery pack is provided, which is composed of a charger unit, a controller and a battery pack unit to form an integrated unit, characterized in that:

[0041] The power input terminal of the charger unit is connected to the input AC power to convert the AC power into charging DC power to charge the battery pack unit; the charger unit has built-in charging control software to control the charging process of the battery pack unit;

[0042] The battery pack unit is composed of one or more battery packs connected in parallel, and the battery pack is composed of multiple power batteries connected in series. Each battery pack has a built-in BMS battery management software to manage and monitor the charging and discharging process of the power batteries in the battery pack;

[0043] The controller is connected to the charger unit and the battery unit, and controls the operation of the charger unit and the battery unit.

[0044] According to the sixth aspect of the purpose of the present invention, an application of the aforementioned self-energizing power battery pack in an electric ship or an electric heavy truck is also proposed. By electrically connecting 1 to M self-energizing power battery packs and connecting them to the battery power bus of the electric ship or the electric heavy truck, a battery power system for the electric ship or the electric heavy truck is constructed.

[0045] In the self-energizing battery pack of the above embodiment, the input end of the charger unit receives three-phase AC power and converts it into a charging DC power supply, so as to perform self-energizing charging on the battery pack unit without relying on external charging pile equipment, thus avoiding the inconvenience of using a large-section DC charging cable of the charging pile; at the same time, it avoids the problem of different charging piles or different charging pile protocols and ports being difficult to unify, and self-energizing charging can be achieved as long as there is AC power input.

[0046] The distributed self-energizing system proposed in the present invention is suitable for the empowerment of large-capacity battery power systems. It solves the problem of empowerment safety and bypassing the international standardization of empowerment protocols and interface standards. It is equipped with a distributed self-energizing battery power system to facilitate passage through global rivers, thereby promoting the rapid development of domestic electric ships. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a principle block diagram of a ship self-energizing battery power system according to an embodiment of the present invention.

[0048] Figure 2 It is a principle block diagram of a self-energizing power battery domain BD according to an embodiment of the present invention.

[0049] Figure 3 4 is a principle block diagram of a self-energizing power battery cluster BC according to an embodiment of the present invention.

[0050] Figure 4 4 is a principle block diagram of a self-energizing power battery pack BK according to an embodiment of the present invention.

[0051] Figure 5 Schematic diagram of a power transformer according to an embodiment of the present invention. DETAILED DESCRIPTION

[0052] In order to better understand the technical content of the present invention, specific embodiments are given and described as follows in conjunction with the accompanying drawings.

[0053] Various aspects of the present invention are described in this disclosure with reference to the accompanying drawings, in which many illustrative embodiments are shown. The embodiments of the present disclosure are not necessarily intended to include all aspects of the present invention. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed by the present invention are not limited to any implementation. In addition, some aspects disclosed by the present invention can be used alone or in any appropriate combination with other aspects disclosed by the present invention.

[0054] {Example 1}

[0055] Combination Figures 1 to 5 As shown, the self-charging powered battery system for electric ships according to an embodiment of the present invention is composed of 1 to P self-charging power battery domains 200 to form a battery power system.

[0056] Taking an electric ship (such as an electric cargo ship, an electric passenger ship, an electric passenger and cargo ship, etc.) as an example, 1 to P self-energizing power battery domains 200 (i.e., Battery domain, referred to as BD) are installed on the electric ship, especially in the power battery compartment of the cabin. Each self-energizing power battery domain 200 is composed of 1 to N self-energizing power battery clusters BC (i.e., Battery cluster, referred to as BC), and each self-energizing power battery cluster BC is composed of 1 to M self-energizing power battery packs BK (i.e., Power battery pack, referred to as BK).

[0057] As an optional embodiment, a plurality of self-energizing power battery packs BK are electrically connected in series to form a self-energizing power battery cluster BC. A plurality of self-energizing power battery clusters BC are electrically connected in parallel to form a self-energizing power battery domain 200. In particular, a plurality of self-energizing power battery clusters BC having the same number of self-energizing power battery packs BK are connected in parallel to form a self-energizing power battery domain 200, which is connected to the power bus of the electric ship.

[0058] In an embodiment of the present invention, Figure 4 As shown, each self-energizing power battery pack BK is composed of a charger unit 1, a controller 2 and a battery pack unit 3 to form an integrated unit.

[0059] The power input terminal of the charger unit 1 is electrically connected to the AC power connected to the ship, converting the AC power into charging DC power to charge the battery unit 3. The charger unit 1 has built-in charging control software to control the charging process of the battery unit 3.

[0060] The battery pack unit 3 is composed of one or more battery packs connected in parallel, and each battery pack is composed of multiple power batteries connected in series. In particular, each battery pack has a built-in BMS battery management software to manage and monitor the charging and discharging process of the power batteries in the pack.

[0061] The controller 2 is connected to the charger unit 1 and the battery unit 3 to control the operation of the charger unit 1 and the battery unit 3 .

[0062] In an embodiment of the present invention, the aforementioned integrated self-energizing battery pack design of the charger unit 1, controller 2 and battery pack unit 3, in particular, refers to packaging the three as a whole, installing and integrating them in a unified battery pack housing, and using them as a whole.

[0063] The number of battery packs contained in each self-energizing battery pack BK and the number of power batteries connected in series in each battery pack can be designed according to the use requirements of the battery pack, and the voltage output of the self-energizing battery pack BK is proportional to the number of power batteries connected in series in the battery pack. For example, as an optional example, the voltage level of each self-energizing battery pack BK is designed to be 1000V.

[0064] The battery pack unit contains one or more battery packs, and multiple battery packs are connected in parallel. In addition, each battery pack is equipped with BMS battery management software (module) to manage and monitor the charging and discharging process of the power battery in the battery pack. The configuration of BMS battery management software can use commercial IC as the main control circuit. Therefore, after each battery pack is equipped with BMS software, parallel electrical connections can be made between multiple battery packs.

[0065] It should be understood that in the design of the battery pack unit of the multiple battery packs, the number of power batteries connected in series in each battery pack is the same.

[0066] As an optional embodiment, the power battery of the battery pack unit 3 is a liquid electrolyte battery, a condensed electrolyte battery or a solid electrolyte battery, or other power batteries that can be used in a ship battery power system.

[0067] As an optional implementation scheme, the power battery of the battery pack unit 3 is one of a cylindrical power battery, a cubic power battery and an infinite power battery.

[0068] It should be understood that the infinite power battery in this example refers particularly to a cubic infinite power battery with high energy density and good usability and maintainability, such as the infinite battery as a power battery design proposed in Chinese publication number CN116979128A. The full text of CN116979128A is cited here as a reference.

[0069] In the design of an optional embodiment, the ship self-energizing battery power system further includes a power transformer 100 and 1 to T secondary output windings. The secondary output winding of the power transformer 100 is electrically connected to the self-energizing power battery pack BK, for example, via a battery power bus, and the AC power output by the secondary output winding is sent to the power input terminal of the charger unit 1.

[0070] As a preferred design, the power transformer 100 with 1 to T output windings is installed on a ship, that is, the power transformer is designed to be installed on a ship, such as installed in a suitable location in the ship's power compartment, deck or hull.

[0071] In this way, the secondary output winding of the power transformer 100 is electrically connected to the self-energizing power battery pack BK through the battery power bus on the ship, and the AC power output by the secondary output winding is sent to the power input terminal of the charger unit 1. The charger unit 1 converts the three-phase AC power of the output winding of the power transformer 100 into charging DC power to charge and energize the battery pack unit 3.

[0072] As an optional embodiment, the primary side of the power transformer 100 is connected to the three-phase AC power input of the shore power grid, and the primary side is a medium voltage or low voltage input. For example, the input voltage of the primary side is in the voltage level range of 6kV to 35kV, including but not limited to 5kV, 10kV, 20kV, 35kV, etc.

[0073] The output voltage of the secondary side of the power transformer 100 is in the voltage level range of 100V to 2000V, including but not limited to 100V, 110V, 220V, 230V, 400V, 690V, 1000V, 2000V, etc., and is sent to the charger unit 1 for self-energizing charging.

[0074] In the above embodiment, a plurality of self-energizing power battery packs BK are electrically connected in series to form a self-energizing power battery cluster BC, thereby increasing the output voltage of a single self-energizing power battery cluster BC through the series connection. At the same time, by electrically connecting a plurality of self-energizing power battery clusters BC in parallel, a self-energizing power battery domain 200 is formed to achieve a greater current output requirement.

[0075] Furthermore, by electrically connecting multiple self-energizing power battery domains 200, a battery power system is formed for use in electric ships and vessels.

[0076] It should be understood that in the embodiment of the present invention, the aforementioned parameters P, N, M, and T are all positive integers and can be configured and set according to the specifications and capacity of the ship self-energizing battery power system. In particular, the number T of the output windings of the power transformer is set to be the same as the number M of the self-energizing power battery packs BK.

[0077] Combination Figures 1 to 4 As shown, according to the implementation of the self-energizing battery power system of the above-mentioned embodiment, a self-energizing battery pack is designed by integrating a charger unit, a controller and a power battery unit, and thus a self-energizing battery power system for an electric ship is constructed, and the self-energizing power battery domain 200 is installed on the electric ship. Since each self-energizing battery pack adopts an integrated charger unit design, it receives three-phase AC power from the shore power side, and converts it into charging DC power in the charger unit to charge and energize the battery pack unit 3, thereby solving the fundamental problem of fast charging and empowering of existing electric ships. There is no need to build shore-based charging piles, which avoids the inconvenience of docking charging and replenishing when the large-section DC charging cable of the shore-based charging pile is hoisted to the ship; at the same time, it avoids the problem of difficulty in unifying the protocols of different shore-based charging piles or shore-based charging piles in different countries. As long as there is AC power on board, the self-energizing charging of the electric ship can be achieved.

[0078] In combination with an embodiment of the present invention, as an optional solution, the charger unit 1 of the self-energizing power battery pack BK is a bidirectional reversible charger for realizing bidirectional flow of electric energy, including converting the three-phase AC power on the secondary side of the power transformer 100 into a charging power source for the battery pack unit 3; or inverting the DC power of the battery pack unit 3 into AC power and connecting it to the power grid through the primary side of the power transformer 100.

[0079] {Example 2}

[0080] In this embodiment, combined with the design of the self-energizing battery pack BK, the self-energizing power battery pack BK is composed of a charger unit 1, a controller 2 and a battery pack unit 3 to form an integrated unit, which is enclosed in a unified housing. The power input terminal of the charger unit 1 is connected to the input AC power, converting the AC power into charging DC power to charge and energize the battery pack unit 3.

[0081] The battery pack unit 3 is composed of one or more battery packs connected in parallel, and the battery pack is composed of multiple power batteries connected in series.

[0082] Among them, the battery pack has built-in BMS battery management software to manage and monitor the charging and discharging process of the power battery.

[0083] The charger unit 1 has built-in charging control software to control the charging process of the battery pack unit 3 .

[0084] In this embodiment, one implementation of the self-energizing power battery cluster BC is composed of one self-energizing power battery pack BK. For example, multiple battery packs are connected in parallel in one self-energizing power battery pack BK to meet the working current requirements, and multiple power batteries are connected in parallel in each battery pack to meet the working voltage requirements.

[0085] Furthermore, in the design of a self-energizing power battery domain BD composed of 1-N self-energizing power battery clusters BC, each self-energizing power battery cluster BC is composed of 1 self-energizing power battery pack BK.

[0086] Particularly optionally, the power transformer 100 is installed on shore, or installed on an electric vessel.

[0087] As an optional embodiment, the secondary side output winding of the power transformer 100 is one winding, and the output voltage is in the voltage level range of 400V to 2000V, including but not limited to 100V, 110V, 220V, 230V, 400V, 690V, 1000V, 2000V, etc., which is sent to the power input terminal of the charger unit 1 to achieve self-energizing charging through the AC-DC conversion of the charger unit 1.

[0088] {Example 3}

[0089] In this embodiment, the aforementioned electric ship self-energizing battery power system is designed to be a battery power system for an electric fishing boat, and is equipped with a battery power system with a capacity of about 1 megawatt-hour (MWh), for example.

[0090] Among them, 1 to P self-energizing power battery domains 200 are all installed on the electric fishing boat. For example, the self-energizing power battery domain 200 is composed of at least one self-energizing power battery cluster BC and installed in an appropriate position inside the hull of the electric fishing boat, such as in the power battery compartment.

[0091] As an optional embodiment, the power transformer 100 may be installed on the shore side instead of on the electric fishing boat.

[0092] The secondary side output winding of the power transformer 100 is a winding, and the output voltage is in the voltage level range of 400V to 2000V, including but not limited to 100V, 110V, 220V, 230V, 400V, 690V, 1000V, 2000V, etc. After being sent to the ship, it is connected to the battery power bus of the ship, and is electrically connected to the self-energizing battery pack BK via the battery power bus. The AC power is connected to the power input terminal of the charger unit 1, and the charger unit 1 performs self-energizing charging on the cells of the battery pack.

[0093] {Example 4}

[0094] The self-energizing battery power system design combined with the above-mentioned electric ship self-energizing battery power system can also be applied to electric heavy trucks (electric heavy trucks) to build a battery power system for electric heavy trucks.

[0095] As an example, the self-energizing battery power system of an electric heavy truck is composed of 1 to P self-energizing power battery domains 200 .

[0096] The self-energizing power battery domain 200 is installed in the vehicle battery compartment. In combination with the design of the aforementioned embodiment 1, the self-energizing power battery domain 200 is composed of 1 to N self-energizing power battery clusters BC, and each self-energizing power battery cluster is composed of 1 to M self-energizing power battery packs BK;

[0097] In particular, each self-energizing power battery pack K is composed of a charger unit 1, a controller 2 and a battery pack unit 3 to form an integrated unit.

[0098] The power input terminal of the charger unit 1 is electrically connected to the AC power supply connected to the vehicle, converting the AC power into charging DC power to charge the battery pack unit; the charger unit has built-in charging control software to control the charging process of the battery pack unit.

[0099] The battery pack unit 3 is composed of one or more battery packs connected in parallel, each battery pack is composed of multiple power batteries connected in series, and the battery pack has built-in BMS battery management software to manage and monitor the charging and discharging process of the power batteries in the group.

[0100] The controller 2 is connected to the charger unit and the battery pack unit, and controls the operation of the charger unit 1 and the battery pack unit 3 .

[0101] In the embodiment, the integrated self-energizing battery pack design of the charger unit 1, the controller 2 and the battery pack unit 3, in particular, refers to packaging the three as a whole, installing and integrating them in a unified battery pack housing, and using them as a whole.

[0102] The number of battery packs contained in each self-energizing battery pack BK and the number of power batteries connected in series in each battery pack can be designed according to the use requirements of the battery pack, and the voltage output of the self-energizing battery pack BK is proportional to the number of power batteries connected in series in the battery pack. For example, as an optional example, the voltage level of each self-energizing battery pack BK is designed to be 1000V.

[0103] As an optional embodiment, the self-energizing power battery pack used in the electric heavy truck, its charger unit 1 is a bidirectional reversible charger, which is used to realize the bidirectional flow of electric energy, including converting AC power into DC charging power for charging and energizing the battery pack unit; or inverting the DC power of the battery pack unit into AC power output.

[0104] The battery pack unit contains one or more battery packs, and multiple battery packs are connected in parallel. In addition, each battery pack is equipped with BMS battery management software (module) to manage and monitor the charging and discharging process of the power battery in the battery pack. The configuration of BMS battery management software can use commercial IC as the main control circuit. Therefore, after each battery pack is equipped with BMS software, parallel electrical connections can be made between multiple battery packs.

[0105] It should be understood that in the design of the battery pack unit of the multiple battery packs, the number of power batteries connected in series in each battery pack is the same.

[0106] As an optional embodiment, the power battery of the battery pack unit 3 is a liquid electrolyte battery, a condensed electrolyte battery or a solid electrolyte battery, or other power batteries that can be used in a ship battery power system.

[0107] As an optional implementation scheme, the power battery of the battery pack unit 3 is one of a cylindrical power battery, a cubic power battery and an infinite power battery.

[0108] As an optional embodiment, a plurality of self-energizing power battery packs BK are electrically connected in series to form a self-energizing power battery cluster BC. A plurality of self-energizing power battery clusters BC are electrically connected in parallel to form a self-energizing power battery domain BD. In addition, the input end of the charger unit 1 of each self-energizing battery pack BK is connected to the AC power supply connected to the vehicle.

[0109] As an optional implementation, each of the self-energizing power battery clusters is composed of one self-energizing power battery pack. For example, through the electrical connection of the battery pack, a single self-energizing power battery pack can meet the output voltage and current requirements of the electric heavy truck for the battery pack, for example, the voltage of a single self-energizing power battery pack reaches 1000V.

[0110] As an optional embodiment, the AC power externally connected to the electric heavy truck can be selected to be connected through the secondary output winding of the power transformer. The AC power voltage input to the electric heavy truck can be selected in the voltage level range of 100V to 2000V, including but not limited to 100V, 110V, 220V, 230V, 400V, 690V, 1000V, etc. The AC power supply is electrically connected to the self-energizing power battery pack BK, for example, via a power bus to achieve electrical connection, and the AC power is sent to the power input terminal of the charger unit 1, which converts the AC power to the DC charging power and then performs self-energizing charging on the battery pack unit.

[0111] In combination with the above-mentioned design of the self-energizing battery power system of the electric heavy-duty truck, a self-energizing battery pack is designed by integrating the charger unit, the controller and the power battery unit, and thus the self-energizing battery power system of the electric heavy-duty truck is constructed. The self-energizing power battery domain is installed in the on-board battery compartment. Since the self-energizing battery pack adopts the design of the integrated charger unit, it only needs to receive the three-phase AC input from the outside, and convert it into charging DC power in the charger unit to charge and energize the battery pack unit, thereby solving the problem of fast charging and energizing of the existing electric heavy-duty trucks, and avoiding the problem of inconsistent voltage specifications, interfaces and protocol standards when using the existing electric vehicle charging piles. By utilizing the design of the self-energizing battery power system of the electric heavy-duty truck of the present invention, the self-energizing charging of the electric heavy-duty truck can be completed as long as AC power is delivered to the vehicle, thereby realizing the rapid empowerment of the large-capacity battery power system, solving the problem of empowerment safety and bypassing the international universalization of empowerment protocols and interface standards, and installing a distributed self-energizing battery power system to conveniently achieve global travel, thereby promoting the rapid development of electric ships and electric heavy-duty trucks.

[0112] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A self-energizing battery power system for an electric ship, characterized in that: It is composed of 1 to P self-energizing power battery domains (200); The self-energizing power battery domain (200) is installed in a ship power battery compartment and is composed of 1 to N self-energizing power battery clusters, each of which is composed of 1 to M self-energizing power battery packs; The self-energizing power battery pack is composed of a charger unit (1), a controller (2) and a battery pack unit (3) to form an integrated unit; The power input end of the charger unit (1) is electrically connected to the alternating current power connected to the ship, converting the alternating current power into charging direct current power to charge the battery unit (3); the charger unit (1) has built-in charging control software to control the charging process of the battery unit (3); The battery pack unit (3) is composed of one or more battery packs connected in parallel, each battery pack is composed of a plurality of power batteries connected in series, and the battery pack has built-in BMS battery management software to manage and monitor the charging and discharging process of the power batteries in the pack; The controller (2) is connected to the charger unit (1) and the battery pack unit (3) to control the operation of the charger unit (1) and the battery pack unit (3).

2. The self-energizing battery power system for electric ships according to claim 1, characterized in that: The charger unit (1) of the self-energizing power battery pack is a bidirectional reversible charger, which is used to realize the bidirectional flow of electric energy, including converting an AC power source into a DC charging electric energy for charging and energizing the battery pack unit (3); or inverting the DC electric energy of the battery pack unit (3) into AC electric energy for output.

3. The self-energizing battery power system for electric ships according to claim 1, characterized in that: Multiple self-energizing power battery packs are electrically connected in series to form a self-energizing power battery cluster.

4. The self-energizing battery power system for an electric ship according to claim 1, characterized in that: A plurality of self-energizing power battery clusters are electrically connected in parallel to form a self-energizing power battery domain (200).

5. The self-energizing battery power system for electric ships according to claim 1, characterized in that: The power battery of the battery pack unit (3) is a liquid electrolyte battery, a condensed electrolyte battery or a solid electrolyte battery.

6. The self-energizing battery power system for an electric ship according to claim 1, characterized in that: The power battery of the battery pack unit (3) is one of a cylindrical power battery, a cubic power battery and an infinite power battery.

7. The self-energizing battery power system for an electric ship according to any one of claims 1 to 6, characterized in that: The self-energizing battery power system of the electric ship also includes a power transformer (100), the secondary side of which has 1 to T output windings; The secondary output winding of the power transformer (100) is electrically connected to the self-energizing power battery pack, and the AC power output by the secondary output winding is fed into the power input terminal of the charger unit (1).

8. The self-energizing battery power system for electric ships according to claim 7, characterized in that: The power transformer (100) is installed on the ship.

9. The self-energizing battery power system for electric ships according to claim 7, characterized in that: The input voltage of the primary side of the power transformer (100) is in the voltage level range of 6 kV to 35 kV; The output voltage of the secondary side of the power transformer (100) is in the voltage level range of 100V to 2000V.

10. The self-energizing battery power system for an electric ship according to claim 1, characterized in that: The self-energizing power battery cluster consists of one self-energizing power battery pack.

11. The self-energizing battery power system for an electric ship according to claim 1, characterized in that: Each of the self-energizing power battery clusters is composed of one self-energizing power battery pack; The power transformer (100) is installed on shore.

12. An electric ship, characterized in that: A self-energizing battery power system for an electric ship equipped with any one of claims 1 to 11.

13. A self-energizing battery power system for an electric heavy truck, characterized in that: It is composed of 1 to P self-energizing power battery domains (200); The self-energizing power battery domain (200) is installed in a vehicle-mounted battery compartment and is composed of 1 to N self-energizing power battery clusters, each of which is composed of 1 to M self-energizing power battery packs; The self-energizing power battery pack is composed of a charger unit (1), a controller (2) and a battery pack unit (3) to form an integrated unit; The power input end of the charger unit (1) is electrically connected to the AC power supply connected to the vehicle, converting the AC power into charging DC power to charge the battery unit (3); the charger unit (1) has built-in charging control software to control the charging process of the battery unit (3); The battery pack unit (3) is composed of one or more battery packs connected in parallel, each battery pack is composed of a plurality of power batteries connected in series, and the battery pack has built-in BMS battery management software to manage and monitor the charging and discharging process of the power batteries in the pack; The controller (2) is connected to the charger unit (1) and the battery pack unit (3) to control the operation of the charger unit (1) and the battery pack unit (3).

14. The self-energizing battery power system for an electric heavy truck according to claim 13, characterized in that: The charger unit (1) of the self-energizing power battery pack is a bidirectional reversible charger, which is used to realize the bidirectional flow of electric energy, including converting an AC power source into a DC charging electric energy for charging and energizing the battery pack unit (3); or inverting the DC electric energy of the battery pack unit (3) into AC electric energy for output.

15. The self-energizing battery power system for an electric heavy truck according to claim 13, characterized in that: Multiple self-energizing power battery packs are electrically connected in series to form a self-energizing power battery cluster.

16. The self-energizing battery power system for an electric heavy truck according to claim 13, characterized in that: A plurality of self-energizing power battery clusters are electrically connected in parallel to form a self-energizing power battery domain (200).

17. The self-energizing battery power system for an electric heavy truck according to claim 13, characterized in that: The power battery of the battery pack unit (3) is a liquid electrolyte battery, a condensed electrolyte battery or a solid electrolyte battery.

18. The self-energizing battery power system for an electric heavy truck according to claim 13, characterized in that: The power battery of the battery pack unit (3) is one of a cylindrical power battery, a cubic power battery and an infinite power battery.

19. The self-energizing battery power system for an electric heavy truck according to any one of claims 13 to 18, characterized in that: The input end of the charger unit (1) of each self-energizing battery pack is connected to an AC power source connected to the vehicle.

20. The self-energizing battery power system of an electric heavy truck according to claim 19, characterized in that: Each of the self-energizing power battery clusters consists of one self-energizing power battery pack.

21. An electric heavy truck, characterized in that: A self-energizing battery power system for an electric heavy truck equipped with any one of claims 13 to 20.

22. A self-energizing power battery pack, comprising a charger unit (1), a controller (2) and a battery pack unit (3) forming an integrated unit, characterized in that: The power input end of the charger unit (1) is connected to the input alternating current, converting the alternating current power into charging direct current power to charge the battery pack unit (3); the charger unit (1) has built-in charging control software to control the charging process of the battery pack unit (3); The battery pack unit (3) is composed of one or more battery packs connected in parallel, and the battery pack is composed of multiple power batteries connected in series. Each battery pack has a built-in BMS battery management software to manage and monitor the charging and discharging process of the power batteries in the battery pack; The controller (2) is connected to the charger unit (1) and the battery pack unit (3) to control the operation of the charger unit (1) and the battery pack unit (3).

23. An application of the self-energizing power battery pack as claimed in claim 22 in an electric ship or an electric heavy truck, by electrically connecting 1 to M self-energizing power battery packs and connecting them to the power bus of the electric ship or the electric heavy truck to construct a battery power system for the electric ship or the electric heavy truck.

Images