Cluster box for ship and ship battery system

Abstract

The present application relates to the technical field of ship battery systems, and provides a cluster box for a ship and a ship battery system. The cluster box for a ship comprises a box body, a positive electrode power supply terminal, and a negative electrode power supply terminal. The box body is used for accommodating an electrical component, and the box body and a combiner cabinet are arranged side by side in a first direction. The positive electrode power supply terminal and the negative electrode power supply terminal are respectively used for being connected to a positive electrode and a negative electrode of the electrical component. The box body comprises a first side wall and a second side wall, wherein the first side wall is used for being attached to and connected to the combiner cabinet, and the second side wall is perpendicular to the first side wall. The positive electrode power supply terminal and the negative electrode power supply terminal are both provided on the second side wall, the positive electrode power supply terminal and the negative electrode power supply terminal are spaced apart in a second direction, and the second direction intersects the first direction.

Description

Cluster box for ship and ship battery system

[0001] The present application claims priority to the Chinese patent application No. 202422322582.7 filed on September 23, 2024 with the China Patent Office, the whole content of the above application being incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of ship battery system, in particular to a cluster box for ship and a ship battery system. BACKGROUND

[0003] The shipping industry is one of the important sources of global greenhouse gas emissions. Traditional ships use fuel as the main power source, emitting a large amount of greenhouse gases and pollutants during navigation, which has a serious impact on the marine ecological environment.

[0004] With the continuous development of new energy technology, it is considered to expand the application field of new energy technology to ships and use new energy battery systems to power ships. Due to the navigation characteristics of ships, the battery system needs to provide longer endurance time. Under the current technical conditions, the battery system of the ship needs to be configured with a large number of high-energy-density batteries. In order to save more space for the batteries, it is necessary to compress the installation space of other electrical equipment as much as possible. For example, in the related art, the cluster box of the battery cluster in the battery system is arranged side by side and close to the busbar cabinet, and then the high-voltage connector terminal, cluster group communication terminal, etc. provided on the cluster box of the battery cluster are connected to the busbar cabinet by a line. SUMMARY

[0005] However, the installation space in the ship container is small. In the case of small space, although a large number of batteries can provide longer endurance time, there are problems such as difficulty in laying lines, lack of space for installing and maintaining lines, etc.

[0006] The present application provides a cluster box for ship and a ship battery system. The cluster box for ship comprises:

[0007] a box body for accommodating electrical components of a battery cluster and arranged side by side with a busbar cabinet along a first direction;

[0008] a positive power supply terminal for connecting a positive electrode of the electrical component;

[0009] a negative power supply terminal for connecting a negative electrode of the electrical component;

[0010] The box body comprises a first side wall and a second side wall, the first side wall is used to fit and connect the busbar cabinet, the second side wall is perpendicular to the first side wall, the positive power supply terminal and the negative power supply terminal are arranged on the second side wall, the positive power supply terminal and the negative power supply terminal are arranged in a spaced manner along a second direction, and the second direction intersects the first direction.

[0011] The application also provides a ship battery system. The ship battery system comprises:

[0012] a busbar cabinet;

[0013] a battery cluster comprising electrical components and a plurality of single batteries;

[0014] The cluster box for a ship of any one of the first aspect, the cluster box contains the electrical components of the battery cluster and is connected to the busbar cabinet. Advantages

[0015] The cluster box for a ship provided by the application, by arranging the box body side by side with the busbar cabinet along a first direction, and arranging the positive power supply terminals and the negative power supply terminals on the second side wall of the box body along a second direction, the second direction being perpendicular to the first direction, the lines of the positive power supply terminals and the negative power supply terminals do not block each other and are not easy to entangle, greatly facilitating wiring work and maintenance work. Further, the second direction is arranged perpendicular to the first direction, so that the wiring length between the positive power supply terminals and the negative power supply terminals and the busbar cabinet is consistent, which is conducive to further standardization, and the two specifications are unified, without the need for on-site cutting and the need to prepare two or more lengths of line sections, which is conducive to reducing costs and improving wiring efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a plan view of the connection structure of the cluster box and the busbar cabinet according to an embodiment of the application;

[0017] Fig. 2 is a structural perspective view of the cluster box according to an embodiment of the application;

[0018] Fig. 3 is a plan view of the second side wall of the cluster box according to an embodiment of the application;

[0019] Fig. 4 is a perspective view of the connector of the cluster box according to an embodiment of the application;

[0020] Fig. 5 is an enlarged view of portion A of Fig. 4.

[0021] Explanation of reference signs:

[0022] 1000 - busbar cabinet, 2000 - cluster box, 1 - box body, 11 - first side wall, 12 - second side wall, 121 - first area, 122 - second area, 123 - third area, 21 - positive power supply terminal, 22 - negative power supply terminal, 31 - positive charging interface, 32 - negative charging interface, 41 - cluster group communication interface, 42 - PACK communication interface, 5 - connector, 51 - plug, 511 - plug-in part, 512 - bending part, 52 - connecting piece, 53 - mounting seat, 54 - pressing rod, 55 - sliding block, X - first direction, Y - second direction. Embodiments of the application

[0023] In a large ship battery system, a plurality of single batteries are connected in series or in parallel to form a battery cluster, a plurality of battery clusters are connected in parallel to form a battery pack (PACK), each battery cluster is equipped with a cluster high-voltage box (referred to as a cluster box), each cluster box contains the electrical components of the corresponding battery cluster, and each battery pack is equipped with a busbar cabinet. The busbar cabinet of each battery pack is connected to the cluster box through a line. The connection line between the cluster box and the busbar cabinet includes various lines, such as positive and negative lines for supplying power to the load, communication lines or monitoring lines, and the like.

[0024] Due to the limited installation space in the space container, in order to provide a longer endurance time, the installation space of other electrical equipment is generally compressed as much as possible to accommodate more batteries. In the related art, the cluster box of the battery cluster in the battery system is arranged side by side and closely with the busbar cabinet, and the high-voltage connector terminal, cluster group communication terminal, etc. arranged on the cluster box of the battery cluster are connected to the busbar cabinet through such a compact structure arrangement to minimize the space occupation. In addition, the line is used to connect the high-voltage connector terminal, cluster group communication terminal, etc. arranged on the cluster box of the battery cluster to the busbar cabinet. In the case of limited space, how to arrange the line not only saves the line occupation space, but also provides space redundancy for line installation and maintenance, which is one of the research directions in the field.

[0025] The ship battery system provided in the embodiments of the present application includes a busbar cabinet 1000, a battery cluster, and a cluster box 2000. The battery cluster includes electrical components and a plurality of single batteries, and the cluster box 2000 contains the electrical components of the battery cluster and is connected to the busbar cabinet 1000.

[0026] The number of cluster boxes 2000 can be multiple, and the number of battery clusters can be multiple. The plurality of cluster boxes 2000 and the plurality of battery clusters correspond to each other, and each cluster box 2000 contains the electrical components of the corresponding battery cluster and is connected to the busbar cabinet 1000.

[0027] As shown in FIG. 1, FIG. 1 shows the busbar cabinet 1000 and one cluster box 2000. The cluster box 2000 includes a box body 1, various terminals arranged on the box body 1, and a connector 5.

[0028] As shown in FIG. 2, FIG. 2 shows a structure perspective view of the box body 1. The cluster box 2000 includes the box body 1, a positive power supply terminal 21, and a negative power supply terminal 22.

[0029] The box body 1 is used to contain electrical components, and the box body 1 is configured to be arranged side by side with the busbar cabinet 1000 along a first direction X. The box body 1 includes a first side wall 11 and a second side wall 12, and the second side wall 12 is perpendicular to the first side wall 11. The first side wall 11 is used to fit and connect the busbar cabinet 1000.

[0030] Specifically, the enclosure 1 and the junction box 1000 are arranged side by side along the first direction X, so the first side wall 11 is perpendicular to the first direction X, and the second side wall 12 is parallel to the first direction X.

[0031] The positive power supply terminal 21 is used to connect to the positive terminal of the electrical component. The negative power supply terminal 22 is used to connect to the negative terminal of the electrical component. Both the positive power supply terminal 21 and the negative power supply terminal 22 are located on the second side wall 12.

[0032] Specifically, the positive power supply terminal 21 and the negative power supply terminal 22 are both installed through the second side wall 12. The end of the positive power supply terminal 21 and the negative power supply terminal 22 located inside the enclosure 1 is connected to the positive and negative terminals of the electrical components inside the enclosure 1, respectively. The end of the positive power supply terminal 21 and the negative power supply terminal 22 located outside the enclosure 1 is used to connect to the combiner cabinet 1000 so that power can be supplied to the load through the combiner cabinet 1000.

[0033] Among them, the positive power supply terminal 21 and the negative power supply terminal 22 are arranged at intervals along the second direction Y, and the second direction Y intersects the first direction X.

[0034] "The second direction Y intersects with the first direction X" means that the second direction Y and the first direction X are set at a certain angle, such as 30°, 45°, 60°, 75°, 90°, 105°, 120°, 135° or 150°.

[0035] This embodiment is described with the second direction Y and the first direction X forming an angle of 90°, that is, the second direction Y intersects the first direction X perpendicularly, and the second direction Y is parallel to the second sidewall 12. Assuming the first direction X is the left-right direction, then the second direction Y is the up-down direction, and the positive power supply terminal 21 and the negative power supply terminal 22 are arranged vertically at intervals along the up-down direction.

[0036] In related technologies, there are various ways to arrange the positive power supply terminal 21 and the negative power supply terminal 22. For example, the positive power supply terminal 21 and the negative power supply terminal 22 can be arranged along the first direction X, or they can be arranged diagonally upwards and downwards. These arrangements are more suitable for implementation in other application scenarios, but they present many problems in the context of ship containers. For example, when the positive power supply terminal 21 and the negative power supply terminal 22 are arranged along the first direction X, since the container 1 and the combiner cabinet 1000 are arranged side by side along the first direction X, the line of one terminal will block the line of the other terminal. This hinders the wiring and maintenance of the line of the other terminal, and the two lines are also prone to tangling. Furthermore, the wiring lengths of the two lines are different, making further standardization impossible.

[0037] The technical scheme provided by the embodiments of the present application, by setting the box 1 to be parallel to the busbar cabinet 1000 along the first direction X, and setting the positive power supply terminal 21 and the negative power supply terminal 22 on the second side wall 12 of the box 1 to be arranged at intervals along the second direction Y, the second direction Y is arranged to be perpendicular to the first direction X, so that the lines of the positive power supply terminal 21 and the negative power supply terminal 22 do not block each other and are not easy to entangle, greatly facilitating the wiring work and maintenance work. Further, the second direction Y is arranged to be perpendicular to the first direction X, so that the wiring length between the positive power supply terminal 21 and the negative power supply terminal 22 and the busbar cabinet 1000 is consistent, which is conducive to further standardization, and the two specifications are unified, without the need for on-site cutting and the need to prepare two or more lengths of line sections, which is conducive to reducing costs and improving wiring efficiency.

[0038] The side of the busbar cabinet 1000 facing the cluster box 2000 is defined as a third side wall, and the third side wall is used to install the cluster box 2000. Further, the area of the first side wall 11 is smaller than the area of the third side wall, so that the second side wall 12 is recessed from the edge of the third side wall to form an accommodation space, the accommodation space is used to accommodate the terminals on the second side wall 12 of the cluster box 2000 and their connection lines, achieving the effect of protecting the terminals and connection lines and reducing the occupation of additional space; at the same time, the connection lines directly enter the busbar cabinet 1000 from the third side wall, without the need to bend or curve when entering the busbar cabinet 1000, which is conducive to reducing the stress on the wire harness and improving the service life of the wire harness.

[0039] In some embodiments, the cluster box 2000 further includes a battery charging interface, a cluster group communication interface 41 and a PACK communication interface 42.

[0040] As shown in FIG. 3, FIG. 3 shows a plan view of the second side wall 12, the second side wall 12 includes a first region 121, a second region 122 and a third region 123, the first region 121, the second region 122 and the third region 123 are staggered in the first direction X; wherein:

[0041] The positive power supply terminal 21 and the negative power supply terminal 22 are arranged in the first region 121;

[0042] The battery charging interface is arranged in the second region 122;

[0043] The cluster group communication interface 41 and the PACK communication interface 42 are arranged in the third region 123.

[0044] By arranging the first region 121, the second region 122 and the third region 123 staggered in the first direction X, the three regions do not overlap and do not block each other in the first direction X, which is conducive to wiring between the cluster box 2000 and the busbar cabinet 1000 without blocking and entangling.

[0045] In some embodiments, at least the first region 121 and the third region 123 are staggered in the second direction Y. By staggering the three regions in the second direction Y, the distance between the interfaces of adjacent regions is further facilitated for wiring and maintenance. In combination with the illustration shown in FIG. 2, the positive power supply terminal 21, the negative power supply terminal 22, and the cluster group communication interface 41 must be connected with the busbar cabinet 1000, while the battery charging interface is not necessarily connected with the busbar cabinet 1000 in some cases. By staggering the first region 121 where the positive power supply terminal 21 and the negative power supply terminal 22 are located and the third region 123 where the cluster group communication interface 41 is located in the second direction Y, wiring is further facilitated.

[0046] In some embodiments, the distances between the first region 121, the second region 122, and the third region 123 and the first side wall 11 decrease in turn. By arranging the second region 122 where the battery charging interface is located in the middle position, the distance between the positive power supply terminal 21, the negative power supply terminal 22, and the cluster group communication interface 41 is increased, further reducing the possibility of winding the three parallel lines, and the parallel length of the line connected by the cluster group communication interface 41 for communication and the positive and negative power supply lines is reduced, which is conducive to reducing the influence of the power supply line on the communication signal.

[0047] Although only one cluster box 2000 is shown in the drawings of the embodiments of the present application as an example of being connected side by side with the busbar cabinet 1000 in the first direction X, those skilled in the art should understand that other cluster boxes 2000 in the ship battery system also need to be connected side by side with the busbar cabinet 1000 in the first direction X, that is, a plurality of cluster boxes 2000 are arranged in turn in the second direction Y. In order to improve the endurance, when more battery clusters are added, the number of cluster boxes 2000 also needs to be increased accordingly.

[0048] In some embodiments, the cluster group communication interface 41 and the PACK communication interface 42 are arranged at intervals in the first direction X, and the distance between the cluster group communication interface 41 and the first side wall 11 is less than the distance between the PACK communication interface 42 and the first side wall 11. By arranging the cluster group communication interface 41 and the PACK communication interface 42 at intervals in the first direction X, it is conducive to reducing the size of the box 1 in the second direction Y, which in turn is conducive to arranging more cluster boxes 2000 under the condition that the space height is unchanged, which is conducive to meeting the demand for improving endurance; at the same time, the cluster group communication interface 41 is closer to the first side wall 11 than the PACK communication interface 42, which avoids the connection line between the cluster group communication interface 41 and the busbar cabinet 1000 from shielding the PACK communication interface 42, and avoids the situation that it is not convenient for wiring and maintenance from hindering the reduction of the size of the box 1.

[0049] In some embodiments, the battery charging interface comprises a positive charging interface 31 and a negative charging interface 32, which are arranged in the first direction X. By arranging the positive charging interface 31 and the negative charging interface 32 in the first direction X, the size of the box 1 in the second direction Y is reduced, thereby facilitating the arrangement of more cluster boxes 2000 under the condition of unchanged space height, and facilitating the meeting of the demand for improving the endurance.

[0050] In some embodiments, the cluster box 2000 further comprises a connector 5, which is a structural component for connecting the aforementioned terminals with the busbar cabinet 1000, and can also be understood as the aforementioned line.

[0051] The number of the connector 5 corresponds to the number of the ports required to be connected with the busbar cabinet 1000, that is, the number of the connector 5 is at least two, so as to connect the positive power supply terminal 21 and the negative power supply terminal 22 with the busbar cabinet 1000.

[0052] The embodiments of the present application take two connectors 5 corresponding to the positive power supply terminal 21 and the negative power supply terminal 22 as an example for description, and the connectors 5 of the remaining terminals can be the same as the embodiments of the present application, or can be set as other structures.

[0053] As shown in FIG. 4, the connector 5 comprises a plug 51 and a connecting piece 52, the plug 51 comprises a plug-in part 511 and a bent part 512, the plug-in part 511 is plug-in matched with the corresponding power supply terminal, the bent part 512 extends along the first direction X and is connected with the plug-in part 511 to form an L shape, and the connecting piece 52 is connected with the bent part 512 at one end and is used for connecting the busbar cabinet 1000 at the other end.

[0054] Among them, the connecting piece 52 comprises a wire harness and / or a copper bar.

[0055] The embodiments of the present application improve the connector 5, and the connecting piece 52 (wire harness and / or copper bar) does not need to be bent or curved, which is beneficial to reduce the stress suffered by the connecting piece 52 and improve the service life.

[0056] In some embodiments, as shown in FIG. 5, the connector 5 further comprises a mounting seat 53, a pressing rod 54 and a sliding block 55, the mounting seat 53 is arranged on the side of the plug-in part 511 away from the bent part 512, the mounting seat 53 is provided with a rotating shaft and a clamping part, the pressing rod 54 is rotatably connected with the rotating shaft, and the sliding block 55 is slidably connected with the pressing rod 54 and has a locking position and an unlocking position.

[0057] The sliding block 55 is matched with the clamping part when in the locking position, so as to limit the rotation of the pressing rod 54 and make the pressing rod 54 abut against the outer surface of the corresponding power supply terminal.

[0058] The slider 55 is disengaged from the clamping portion in the unlocked position and releases the restriction on the pressure rod 54.

Claims

1. A cluster box for a ship, comprising: a box body (1) for accommodating electrical components of a battery cluster and arranged side by side with a busbar cabinet (1000) in a first direction; a positive power supply terminal (21) for connecting a positive pole of the electrical components; a negative power supply terminal (22) for connecting a negative pole of the electrical components; wherein the box body (1) comprises a first side wall (11) for abutting and connecting the busbar cabinet (1000) and a second side wall (12) perpendicular to the first side wall (11), the positive power supply terminal (21) and the negative power supply terminal (22) are arranged on the second side wall (12), and the positive power supply terminal (21) and the negative power supply terminal (22) are arranged in a second direction which is perpendicular to the first direction.

2. The cluster box for a watercraft according to claim 1, wherein, The second side wall (12) comprises a first area (121), a second area (122) and a third area (123), and the first area (121), the second area (122) and the third area (123) are staggered in the first direction. The positive power supply terminal (21) and the negative power supply terminal (22) are arranged in the first area (121), and the cluster box (2000) further comprises a battery charging interface, a cluster group communication interface (41) and a PACK communication interface (42), the battery charging interface is arranged in the second area (122), and the cluster group communication interface (41) and the PACK communication interface (42) are arranged in the third area (123).

3. The cluster box for a watercraft according to claim 2, wherein, The first area (121) and the third area (123) are staggered in the second direction.

4. The cluster box for a watercraft according to claim 2 or 3, wherein, The distances between the first area (121), the second area (122), the third area (123) and the first side wall (11) decrease in turn.

5. The cluster box for a watercraft according to any one of claims 2 to 4, wherein, The cluster group communication interface (41) and the PACK communication interface (42) are arranged in the first direction, and the distance between the cluster group communication interface (41) and the first side wall (11) is smaller than the distance between the PACK communication interface (42) and the first side wall (11).

6. The cluster box for a watercraft according to any one of claims 2 to 5, wherein, The battery charging interface comprises a positive charging interface (31) and a negative charging interface (32), and the positive charging interface (31) and the negative charging interface (32) are arranged in the first direction.

7. The cluster box for a watercraft according to any one of claims 1 to 6, wherein, The cluster box (2000) further comprises: at least two connectors (5), and the positive power supply terminal (21) and the negative power supply terminal (22) correspond to two of the connectors (5) respectively. The connector (5) comprises a plug (51) and a connecting piece (52), the plug (51) comprises a plug-in part (511) and a bent part (512), the plug-in part (511) is plugged with a corresponding power supply terminal, the bent part (512) extends along the first direction and is connected with the plug-in part (511) to form an L shape, and the connecting piece (52) is connected with the bent part (512) at one end and is used for connecting the busbar cabinet (1000) at the other end.

8. The cluster box for a watercraft according to claim 7, wherein, The connector (5) further comprises a mounting seat (53), a pressing rod (54) and a sliding block (55), the mounting seat (53) is arranged on a side of the plug-in part (511) away from the bent part (512), the mounting seat (53) is provided with a rotating shaft and a clamping part, the pressing rod (54) is rotatably connected with the rotating shaft, and the sliding block (55) is slidably connected with the pressing rod (54) and has a locking position and an unlocking position; When the sliding block (55) is in the locking position, the sliding block (55) is matched with the clamping part to limit the rotation of the pressing rod (54) and make the pressing rod (54) abut against the outer surface of the corresponding power supply terminal; When the sliding block (55) is in the unlocking position, the sliding block (55) is separated from the clamping part and releases the limitation on the pressing rod (54).

9. The cluster box for a watercraft according to claim 7 or 8, wherein, The connecting piece (52) comprises a wire harness and / or a copper bar.

10. A ship battery system, comprising: a busbar cabinet (1000); a battery cluster comprising electrical components and a plurality of single batteries; the cluster box (2000) of any one of claims 1 to 9, the cluster box (2000) contains the electrical components of the battery cluster and is connected with the busbar cabinet (1000).

Images