Battery box cabinet and battery replacing ship

Abstract

The embodiment of the utility model provides a battery box cabinet and a battery changing ship, and relates to the technical field of electric ships. In the battery box cabinet, the first electrode port group of the battery is connected with the first end of the manual maintenance switch, the second end of the manual maintenance switch is connected with the first end of the first electrode circuit unit, and the second end of the first electrode circuit unit is connected with the first electrode external connection port; the second electrode port group of the battery is connected with the first end of the second electrode circuit unit, and the second end of the second electrode circuit unit is connected with the second electrode external port; the first pole circuit unit is provided with a first switch unit; the second pole circuit unit is provided with a second switch unit. The control unit is connected with an energy management system of the ship. The battery box cabinet provided by the embodiment of the utility model is suitable for the electric ship, and the switch unit can be flexibly switched on and switched off in charging and discharging scenes. And the manual maintenance switch can disconnect the battery pack from the internal circuit of the battery cabinet as required so as to ensure safety.

Description

Technical Field

[0001] The present application relates to the technical field of electric ships, and in particular to battery cabinets and battery-swapping ships. Background Art

[0002] With the increasing global awareness of environmental protection and the shipping industry's growing demand for clean energy, electric ships have become a new trend in the green development of the shipping industry.

[0003] Batteries need to be charged and discharged, connected to a charging power source and a load, and in some cases, disconnected from external circuits, requiring switches such as relays. Therefore, a cabinet can be designed to connect the battery to the external circuit.

[0004] How to design a battery cabinet suitable for electric ships is the technical problem to be solved in this application. Utility Model Content

[0005] The purpose of this application is to provide a battery cabinet and a battery-swap ship to solve the technical problem of how to design a battery cabinet suitable for electric ships in the prior art.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions.

[0007] In a first aspect, an embodiment of the present application provides a battery cabinet, comprising a first-pole battery port group, a second-pole battery port group, a first-pole external port, a second-pole external port, a first-pole circuit unit, a second-pole circuit unit, a manual maintenance switch, and a control unit;

[0008] The battery first terminal group and the battery second terminal group are used to connect the two poles of the battery pack;

[0009] The first external port and the second external port are used to connect a charging power source or a load;

[0010] The first terminal group of the battery is connected to the first end of the manual maintenance switch, the second end of the manual maintenance switch is connected to the first end of the first circuit unit, and the second end of the first circuit unit is connected to the first external port;

[0011] The second terminal group of the battery is connected to the first end of the second circuit unit, and the second end of the second circuit unit is connected to the second external port;

[0012] The first pole circuit unit is provided with a first switch unit;

[0013] The second pole circuit unit is provided with a second switch unit;

[0014] The control unit is connected to the control end of the first switch unit and the control end of the second switch unit respectively, and the control unit is also used to connect to an energy management system.

[0015] Optionally, the battery first pole port group includes n battery first pole ports, n≥2, and the number of the manual maintenance switches is n; there are n groups of battery packs, and each of the battery first pole ports is connected to the first pole of a group of battery packs;

[0016] Each of the first-pole ports of the battery is connected to the first end of the first-pole circuit unit via a manual maintenance switch.

[0017] Optionally, the battery cabinet further includes at least one anti-circulation relay, and at least one of the first-pole ports of the battery is connected to the first end of the first-pole circuit unit through the manual maintenance switch and the anti-circulation relay.

[0018] Optionally, the battery cabinet includes n anti-circulation relays, and each of the first-pole ports of the battery is connected to the first end of the first-pole circuit unit through the manual maintenance switch and the anti-circulation relay.

[0019] Optionally, the first external port includes m first charging interfaces;

[0020] The second-pole external port includes m second-pole charging interfaces; m≥2;

[0021] Different charging ports are used for charging at different power levels.

[0022] Optionally, the first-pole circuit unit includes m first-pole charging relays;

[0023] The second-pole circuit unit includes m second-pole charging relays;

[0024] The first ends of the first-pole circuit units are connected to m first-pole charging interfaces via m first-pole charging relays respectively;

[0025] The first end of the second-pole circuit unit is connected to m first-pole charging interfaces through m second-pole charging relays respectively.

[0026] Optionally, the second-pole external port includes a second-pole discharge interface;

[0027] The second-pole circuit unit includes a discharge main relay, a pre-charge relay and a pre-charge resistor;

[0028] The pre-charging relay and the pre-charging resistor are connected in series and then connected in parallel with the discharge main relay, the first end after the parallel connection is connected to the first end of the second-pole circuit unit, and the second end after the parallel connection is connected to the second-pole discharge interface.

[0029] Optionally, the battery cabinet further includes an insulation monitoring module, wherein a first group of ports of the insulation monitoring module is used to connect to the battery pack, and a second group of ports of the insulation monitoring module is connected to the control unit.

[0030] Optionally, the first-pole external port includes a first-pole interface of a liquid cooler;

[0031] The second-pole external port includes a second-pole interface of a liquid cooler;

[0032] The first terminal interface of the liquid cooler and the second terminal interface of the liquid cooler are used to connect two ends of the liquid cooler;

[0033] The first-pole circuit unit includes a first-pole liquid-cooled relay;

[0034] The second-stage circuit unit includes a liquid-cooled direct connection line;

[0035] The first end of the first-pole circuit unit is connected to the first-pole interface of the liquid cooler through the first-pole liquid cooling relay;

[0036] The first end of the second-pole circuit unit is connected to the second-pole interface of the liquid cooler through the liquid-cooling direct connection line.

[0037] In a second aspect, an embodiment of the present application provides a battery swap ship, which includes the battery box cabinet described in the first aspect.

[0038] Compared with the prior art, this application has the following beneficial effects:

[0039] The battery cabinet provided in the embodiments of the present application is suitable for electric vessels. The cabinet connects the batteries to external circuits and, in some cases, can also disconnect them via an internal switch, allowing for flexible switching between charging and discharging. A manual maintenance switch disconnects the battery pack from the cabinet's internal circuits when necessary to ensure safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 A schematic diagram of a battery cabinet provided in an embodiment of the present application;

[0042] Figure 2A schematic diagram of a battery cabinet connecting two battery packs provided in an embodiment of the present application;

[0043] Figure 3 A schematic diagram of a battery cabinet in which each battery pack has an anti-circulation relay provided in an embodiment of the present application;

[0044] Figure 4 A schematic diagram of a battery cabinet including two power charging interfaces provided in an embodiment of the present application;

[0045] Figure 5 A schematic diagram of a battery cabinet provided in an embodiment of the present application, in which each power charging port has a charging relay for switching on and off;

[0046] Figure 6 A schematic diagram of a battery cabinet including a pre-charging circuit provided in an embodiment of the present application;

[0047] Figure 7 A schematic diagram of a battery cabinet connected to a liquid cooler provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. The described embodiments are part of the embodiments of the present application, but not all of the embodiments. Generally, the components of the embodiments of the present application described in the drawings herein can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is claimed, but rather merely represents selected embodiments of the present application. All other embodiments derived by persons of ordinary skill in the art based on the embodiments in this application without creative effort are intended to fall within the scope of protection of this application. The following embodiments and features therein may be combined with each other unless there is a conflict.

[0050] In the description of this application, it is necessary to explain:

[0051] Relational terms such as first and second are used solely to distinguish one entity or operation from another entity or operation and do not necessarily require or imply any actual relationship or order between these entities or operations;

[0052] “Connection” should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0053] See Figure 1An embodiment of the present application provides a battery box cabinet, including a battery first pole port group, a battery second pole port group, a first pole external port, a second pole external port, a first pole circuit unit, a second pole circuit unit, a manual maintenance switch and a control unit.

[0054] The modules of the battery cabinet have the following connection relationships:

[0055] The battery first terminal group and the battery second terminal group are used to connect the two poles of the battery pack; the first pole refers to the positive pole, the second pole refers to the negative pole, or the second pole refers to the positive pole, the first pole refers to the negative pole;

[0056] The first external port and the second external port are used to connect a charging power source or a load;

[0057] The first terminal group of the battery is connected to the first end of the manual maintenance switch, the second end of the manual maintenance switch is connected to the first end of the first circuit unit, and the second end of the first circuit unit is connected to the first external port;

[0058] The second terminal group of the battery is connected to the first end of the second circuit unit, and the second end of the second circuit unit is connected to the second external port.

[0059] The first pole circuit unit is provided with a first switching unit.

[0060] The second pole circuit unit is provided with a second switching unit.

[0061] The control unit is connected to the control end of the first switch unit and the control end of the second switch unit respectively. The control unit has the function of controlling the first switch unit to be turned on and off, and controlling the second switch unit to be turned on and off.

[0062] This battery cabinet is suitable for electric vessels. It connects the batteries to the external circuit and, in some cases, can also disconnect them via an internal switch, allowing for flexible switching between charging and discharging. A manual maintenance switch disconnects the battery pack from the cabinet's internal circuitry when needed to ensure safety.

[0063] The control unit can also be connected to an energy management system, which communicates with the control unit to better manage the ship's electrical energy utilization.

[0064] The battery first electrode port group may include n battery first electrode ports, where n ≥ 2. When the first electrode is used as a positive electrode, the battery first electrode port group may include n battery positive electrode ports. When the first electrode is used as a negative electrode, the battery first electrode port group may include n battery negative electrode ports, where n ≥ 2.

[0065] Correspondingly, the number of the manual maintenance switches is n, and each battery positive electrode port or each battery negative electrode port is connected to the first end of the first pole circuit unit through a manual maintenance switch.

[0066] like Figure 2 , Figure 2 An example of n=2 is shown, where two battery first-pole ports can be connected to the first poles of two battery packs, and n first-pole ports can be connected to the first poles of n battery packs, each of which can be two or more battery packs connected in series.

[0067] Correspondingly, n battery second-pole ports can be provided in the battery second-pole port group, and all battery second-pole ports can be electrically connected together, thereby forming a parallel relationship between the battery packs. Alternatively, the second poles of the battery packs can be connected together and then connected to the battery second-pole port group.

[0068] Multiple battery packs are first connected in series to form the required operating voltage, and then connected to a battery cabinet. The battery packs are connected in parallel in the battery cabinet, and the battery cabinet can play a protective role.

[0069] Corresponding to the n first pole ports, the n manual maintenance switches can ensure that all battery packs are prevented from conducting loops, causing dangers such as short circuits or electric shocks during maintenance.

[0070] The battery cabinet may further include at least one anti-circulation relay, and the at least one first-pole port of the battery is connected to the first end of the first-pole circuit unit via the manual maintenance switch and the anti-circulation relay.

[0071] For example, there are two groups of battery packs. The first group of battery packs is connected to the first end of the first pole circuit unit through the first pole port of the battery, the manual maintenance switch, and the anti-circulation relay in sequence. The second group of battery packs is connected to the first end of the first pole circuit unit through the first pole port of the battery and the manual maintenance switch in sequence.

[0072] Disconnecting the anti-circulation relay of the first battery pack can prevent the second battery pack from charging with the first battery pack and avoid generating a circulation current. In this way, the battery cabinet can protect the battery pack.

[0073] The number of anti-circulation relays can also be the same as the number of battery packs. When the battery first-pole port group includes n battery positive ports and there are n battery packs, the battery cabinet can include n-1 anti-circulation relays. When the n-1 anti-circulation relays are disconnected, it can ensure that the parallel relationship between all battery packs is disconnected.

[0074] The battery cabinet may include n-1 anti-circulation relays, and each battery first pole port is connected to the first end of the first pole circuit unit through a manual maintenance switch and the anti-circulation relay. The first end of the first pole circuit unit may be a node.

[0075] like Figure 3 , Figure 3 An example of n=2 is shown, where the battery first pole port group includes two battery positive pole ports and the battery pack has two groups. Each battery first pole port is connected to the first end of the first pole circuit unit through a manual maintenance switch and an anti-circulation relay.

[0076] A current sensor can be installed in the series circuit of the anti-circulation relay, for example, between the manual maintenance switch and the anti-circulation relay, or in the first-pole circuit unit, or in the second-pole circuit unit. The signal output of the current sensor is connected to the control unit, which can disconnect the anti-circulation relay when it detects the presence of circulating current between the battery packs. The current sensor can be a Hall effect sensor.

[0077] A fuse can be set in the series circuit of the anti-circulating current relay to prevent excessive current from damaging components such as batteries due to faults such as load short circuit.

[0078] For the first pole external port and the second pole external port, the first pole external port may include m first pole charging interfaces; the second pole external port may include m second pole charging interfaces. When m≥2, different charging interfaces are used for charging with different power.

[0079] Figure 4 An example of m=2 is shown, where the first-pole external port includes a first-pole first charging interface and a first-pole second charging interface, and the second-pole external port includes a second-pole first charging interface and a second-pole second charging interface. The first-pole first charging interface and the second-pole first charging interface can be used for normal power charging, and the first-pole second charging interface and the second-pole second charging interface can be used for fast charging.

[0080] A corresponding number of discharge interfaces can be provided as needed. The first external port can include one or more first discharge interfaces; the second external port can include one or more second discharge interfaces. Different discharge interfaces can be adapted to devices or cables of different specifications.

[0081] A corresponding number of relays can be provided for each charging and discharging interface to control whether each interface is connected to the battery pack. If the first-pole external port includes m first-pole charging interfaces and the second-pole external port includes m second-pole charging interfaces, the first-pole circuit unit includes m first-pole charging relays and the second-pole circuit unit includes m second-pole charging relays.

[0082] Figure 5 An example of m=2 is shown. Each charging relay can ensure safe charging. The discharge circuit can be turned on or off by the discharge relay module of one electrode. Figure 5 The middle discharge relay module is arranged in the second pole circuit unit, and the connection relationship between the control coil of each relay and the control unit is omitted in the figure.

[0083] like Figure 5 The battery cabinet may also include an insulation monitoring module. The first set of ports on the insulation monitoring module is connected to the battery pack, and the second set of ports on the insulation monitoring module is connected to the control unit. The insulation monitoring module is used to monitor the internal insulation resistance of the battery pack. The internal insulation resistance of the battery pack can be the resistance between the high-voltage positive and negative terminals of the battery pack and the battery pack casing or vehicle body ground.

[0084] like Figure 6 The second-pole circuit unit may include a discharge main relay, a pre-charge relay, and a pre-charge resistor.

[0085] The main discharge relay, pre-charge relay, and pre-charge resistor are connected in series, then in parallel with the main discharge relay. The first end of the parallel connection is connected to the first end of the second-pole circuit unit, and the second end of the parallel connection is connected to the second-pole discharge interface. When starting in high-power operation mode, the pre-charge relay can be closed first, followed by a delay before the main discharge relay is closed. This reduces arcing and other impacts, ensuring stable device operation.

[0086] like Figure 7 The first external port may include a first interface for a liquid cooler, and the second external port may include a second interface for a liquid cooler. The first and second interfaces are used to connect the two ends of the liquid cooler. The first circuit unit includes a first liquid cooling relay; the second circuit unit includes a liquid cooling direct connection line. The first end of the first circuit unit is connected to the first interface of the liquid cooler via the first liquid cooling relay; the first end of the second circuit unit is connected to the second interface of the liquid cooler via the liquid cooling direct connection line. The liquid cooler can provide coolant for the battery pack to prevent the battery from overheating.

[0087] Temperature and smoke sensors can also be installed at the battery pack, connected to the control unit in the battery cabinet. In the event of temperature anomalies or smoke detection, some or all relays are disconnected to prevent accidents. At high temperatures, the control unit closes the first-stage liquid-cooling relay, allowing the liquid cooler to cool the battery pack.

[0088] Based on the above embodiments, the present application also provides a battery-swap vessel, comprising the above-described battery cabinet. When the battery pack of the battery-swap vessel needs to be replaced, the manual maintenance switch or internal relay of the battery cabinet can be disconnected, the first and second battery terminals can be disconnected from the old battery pack, and then a new battery pack can be connected, making the replacement process convenient and safe.

[0089] The above-described device and system embodiments are merely illustrative, and some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. Those skilled in the art may understand and implement the present invention without inventive effort.

[0090] The above are merely preferred embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A battery cabinet, characterized in that: It includes a battery first pole port group, a battery second pole port group, a first pole external port, a second pole external port, a first pole circuit unit, a second pole circuit unit, a manual maintenance switch and a control unit; The battery first terminal group and the battery second terminal group are used to connect the two poles of the battery pack; The first external port and the second external port are used to connect a charging power source or a load; The first terminal group of the battery is connected to the first end of the manual maintenance switch, the second end of the manual maintenance switch is connected to the first end of the first circuit unit, and the second end of the first circuit unit is connected to the first external port; The second terminal group of the battery is connected to the first end of the second circuit unit, and the second end of the second circuit unit is connected to the second external port; The first pole circuit unit is provided with a first switch unit; The second pole circuit unit is provided with a second switch unit; The control unit is connected to the control end of the first switch unit and the control end of the second switch unit respectively, and the control unit is also used to connect to an energy management system.

2. The battery cabinet according to claim 1, wherein: The battery first pole port group includes n battery first pole ports, n ≥ 2, and the number of the manual maintenance switches is n; there are n groups of battery packs, and each of the battery first pole ports is connected to the first pole of a group of battery packs; Each of the first-pole ports of the battery is connected to the first end of the first-pole circuit unit via a manual maintenance switch.

3. The battery cabinet according to claim 2, wherein: The battery cabinet further includes at least one anti-circulation relay, and at least one of the first-pole ports of the battery is connected to the first end of the first-pole circuit unit through the manual maintenance switch and the anti-circulation relay.

4. The battery cabinet according to claim 3, wherein: The battery cabinet includes n anti-circulation relays, and each of the first-pole ports of the battery is connected to the first end of the first-pole circuit unit through the manual maintenance switch and the anti-circulation relay.

5. The battery cabinet according to claim 1, wherein: The first external port includes m first charging interfaces; The second-pole external port includes m second-pole charging interfaces; m≥2; Different charging ports are used for charging at different power levels.

6. The battery cabinet according to claim 5, characterized in that: The first-pole circuit unit includes m first-pole charging relays; The second-pole circuit unit includes m second-pole charging relays; The first ends of the first-pole circuit units are connected to m first-pole charging interfaces via m first-pole charging relays respectively; The first end of the second-pole circuit unit is connected to m first-pole charging interfaces through m second-pole charging relays respectively.

7. The battery cabinet according to claim 1, wherein: The second-pole external port includes a second-pole discharge interface; The second-pole circuit unit includes a discharge main relay, a pre-charge relay and a pre-charge resistor; The pre-charging relay and the pre-charging resistor are connected in series and then connected in parallel with the discharge main relay, the first end after the parallel connection is connected to the first end of the second-pole circuit unit, and the second end after the parallel connection is connected to the second-pole discharge interface.

8. The battery cabinet according to claim 1, wherein: The battery cabinet further includes an insulation monitoring module, wherein a first group of ports of the insulation monitoring module is used to connect to the battery pack, and a second group of ports of the insulation monitoring module is connected to the control unit.

9. The battery cabinet according to claim 1, wherein: The first-pole external port includes a first-pole interface of a liquid cooler; The second-pole external port includes a second-pole interface of a liquid cooler; The first terminal interface of the liquid cooler and the second terminal interface of the liquid cooler are used to connect two ends of the liquid cooler; The first-pole circuit unit includes a first-pole liquid-cooled relay; The second-stage circuit unit includes a liquid-cooled direct connection line; The first end of the first-pole circuit unit is connected to the first-pole interface of the liquid cooler through the first-pole liquid cooling relay; The first end of the second-pole circuit unit is connected to the second-pole interface of the liquid cooler through the liquid-cooling direct connection line.

10. A battery-swap ship, characterized in that: The battery-swapping ship comprises the battery cabinet according to any one of claims 1 to 9.

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