Battery cluster and energy storage system

Abstract

The embodiment of the utility model discloses a battery cluster and an energy storage system. The battery cluster comprises at least one battery module, a first connector, a second connector, a first connecting line, a second connecting line and a high-voltage box, the battery module is provided with a first charging and discharging interface and a second charging and discharging interface, the high-voltage box is provided with a first interface and a second interface, one end of the first connector is electrically connected with the first charging and discharging interface, and the other end of the second connector is electrically connected with the second charging and discharging interface. The other end of the first connector is electrically connected with one end of the first connecting line, the other end of the first connecting line is electrically connected with the first interface, one end of the second connector is electrically connected with the second charging and discharging interface, the other end of the second connector is electrically connected with one end of the second connecting line, and the other end of the second connecting line is electrically connected with the second interface. The first connecting line and the second connecting line serve as charging and discharging high-voltage and low-voltage wire harnesses of the battery cluster and are not crossed, the anti-interference performance of the energy storage system can be improved, the reliability of the energy storage system is greatly improved, and it is guaranteed that the energy storage system can operate efficiently and stably.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to a battery cluster and an energy storage system. BACKGROUND

[0002] The battery cluster is a battery combination formed by connecting a plurality of battery monomers or modules in series, parallel or series-parallel manner, and is usually managed and used as an independent unit. In electric vehicles, smart grids and household energy storage systems, the battery cluster is an indispensable core component of the core power source or energy storage system, and can effectively improve the overall performance and life of the system through reasonable configuration and management. Among them, the battery cluster wiring is a key link in the energy storage system, and whether the battery cluster wiring is reasonable determines whether the energy storage system can operate efficiently and stably. CONTENT OF THE UTILITY MODEL

[0003] In view of the deficiencies of the prior art, the present application provides a battery cluster and an energy storage system, which can improve the anti-interference of the energy storage system, greatly improve the reliability of the energy storage system, and ensure that the energy storage system can operate efficiently and stably.

[0004] To solve the above problems, in a first aspect, the present application provides a battery cluster, comprising:

[0005] At least one battery module, the battery module being provided with a first charge-discharge interface and a second charge-discharge interface;

[0006] A first connector, one end of the first connector being electrically connected to the first charge-discharge interface;

[0007] A second connector, one end of the second connector being electrically connected to the second charge-discharge interface;

[0008] A first connecting line, one end of the first connecting line being electrically connected to the other end of the first connector;

[0009] A second connecting line, one end of the second connecting line being electrically connected to the other end of the second connector, and the first connecting line and the second connecting line not crossing each other;

[0010] A high-voltage box, provided with a first interface and a second interface, the first interface being electrically connected to the other end of the first connecting line, and the second interface being electrically connected to the other end of the second connecting line.

[0011] Further, in the battery cluster provided by the present application, the battery cluster further comprises a third connecting line;

[0012] Wherein, one end of the third connecting line is electrically connected to one end of the first connector, and the other end of the third connecting line is electrically connected to the first charge-discharge interface; the third connecting line and the second connecting line do not cross each other.

[0013] Further, in the battery cluster provided in the application, the battery cluster further comprises a fourth connecting line.

[0014] One end of the fourth connecting line is electrically connected to one end of the second connector, and the other end of the fourth connecting line is electrically connected to the second charge-discharge interface. The fourth connecting line and the first connecting line do not cross each other.

[0015] Further, in the battery cluster provided in the application, the battery cluster comprises a plurality of battery modules, and the plurality of battery modules are stacked above the high-voltage box.

[0016] Further, in the battery cluster provided in the application, the battery cluster comprises a plurality of battery modules, and the high-voltage box is stacked above the plurality of battery modules.

[0017] Further, in the battery cluster provided in the application, the battery module is further provided with a first communication interface, the high-voltage box is provided with a second communication interface, and the first communication interface is electrically connected to the second communication interface.

[0018] Further, in the battery cluster provided in the application, the battery cluster comprises a plurality of battery modules, and the first communication interfaces of the battery modules are electrically connected.

[0019] Further, in the battery cluster provided in the application, the high-voltage box is further provided with a third interface and a fourth interface, and the third interface and the fourth interface are respectively electrically connected to the target device.

[0020] Further, in the battery cluster provided in the application, the battery cluster further comprises a plurality of fifth connecting lines and a plurality of battery modules.

[0021] Each of the fifth connecting lines is electrically connected to the first charge-discharge interface of one of the battery modules at one end, and electrically connected to the second charge-discharge interface of another of the battery modules at the other end. The number difference between the fifth connecting lines and the battery modules is a preset number.

[0022] In a second aspect, the application further provides an energy storage system, which at least comprises the battery cluster provided in the first aspect.

[0023] The battery cluster provided by the application comprises at least one battery module, a first connector, a second connector, a first connecting line, a second connecting line and a high-voltage box, the battery module is provided with a first charge-discharge interface and a second charge-discharge interface, the high-voltage box is provided with a first interface and a second interface, one end of the first connector is electrically connected to the first charge-discharge interface, the other end of the first connector is electrically connected to one end of the first connecting line, the other end of the first connecting line is electrically connected to the first interface, one end of the second connector is electrically connected to the second charge-discharge interface, the other end of the second connector is electrically connected to one end of the second connecting line, the other end of the second connecting line is electrically connected to the second interface, and the first connecting line and the second connecting line are respectively used as charge-discharge high-low voltage wire harnesses of the battery cluster and do not cross, so that the anti-interference property of the energy storage system can be greatly improved, the reliability of the energy storage system is greatly improved, and efficient and stable operation of the energy storage system is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0025] Figure 1 The structural schematic diagram of the battery cluster provided by the prior art is shown in the figure.

[0026] Figure 2 The first structural schematic diagram of the battery cluster provided by the embodiment of the application is shown in the figure.

[0027] Figure 3 The second structural schematic diagram of the battery cluster provided by the embodiment of the application is shown in the figure.

[0028] In the figure, 100 is a battery module, 101 is a first charge-discharge interface, 102 is a second charge-discharge interface, 103 is a first communication interface, 200 is a first connector, 300 is a second connector, 400 is a first connecting line, 500 is a second connecting line, 600 is a high-voltage box, 601 is a first interface, 602 is a second interface, 603 is a second communication interface, 604 is a third interface, 605 is a fourth interface, 700 is a third connecting line, 800 is a fourth connecting line, and 900 is a fifth connecting line. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the application.

[0030] It is to be understood that the terms used in this specification of the present application are only for the purpose of describing particular embodiments and are not intended to be limiting of the present application. As used in this specification and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0031] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. mentioned in the description of the present application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the utility model is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", etc. are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0032] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. mentioned in the description of the present application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the utility model is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", etc. are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0033] It should be further understood that the term "and / or" used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. Meanwhile, in the present application, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any embodiment described as "exemplary" in the present application is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the present application.

[0034] In the related art, as shown in FIG. 1, a battery cluster includes a plurality of battery modules 100 and a high-voltage tank 600. At least one battery module 100 is stacked, and then the high-voltage tank 600 is stacked above the battery module 100. Then, the remaining battery modules 100 in the battery cluster are stacked again above the high-voltage tank 600 to form the battery cluster. That is, the high-voltage tank 600 is located between two adjacent battery modules 100 in the vertical direction, i.e., the high-voltage tank 600 is located in the middle position in the battery cluster. Figure 1

[0035] ​The battery modules 100 and the high-voltage box 600 in the battery cluster are stacked in the above manner, and the battery modules 100 are connected in series and in parallel, the charging and discharging interface (such as the first charging and discharging interface 101) of one battery module 100 is electrically connected to the first interface 601 of the high-voltage box 600 to form a high-voltage wire harness of the battery cluster, and the charging and discharging interface (such as the second charging and discharging interface 102) of another battery module 100 is electrically connected to the second interface 602 of the high-voltage box 600 to form a low-voltage wire harness of the battery cluster. However, as can be seen from Figure 1 , the high-voltage wire harness formed after the charging and discharging interface (such as the first charging and discharging interface 101) of one battery module 100 is electrically connected to the first interface 601 of the high-voltage box 600 actually intersects with the low-voltage wire harness formed after the charging and discharging interface (such as the second charging and discharging interface 102) of another battery module 100 is electrically connected to the second interface 602 of the high-voltage box 600, that is, the first connecting line 400 intersects with the second connecting line 500. After the high-voltage wire harness and the low-voltage wire harness of the battery cluster intersect, the anti-interference performance of the energy storage system formed by the battery cluster is poor, and the safety and reliability of the energy storage system are low.

[0036] Therefore, the battery cluster provided by the application includes at least one battery module 100, a first connector 200, a second connector 300, a first connecting line 400, a second connecting line 500, and a high-voltage box 600. The battery module 100 is provided with a first charging and discharging interface 101 and a second charging and discharging interface 102, the high-voltage box 600 is provided with a first interface 601 and a second interface 602, one end of the first connector 200 is electrically connected to the first charging and discharging interface 101, the other end of the first connector 200 is electrically connected to one end of the first connecting line 400, the other end of the first connecting line 400 is electrically connected to the first interface 601, one end of the second connector 300 is electrically connected to the second charging and discharging interface 102, the other end of the second connector 300 is electrically connected to one end of the second connecting line 500, the other end of the second connecting line 500 is electrically connected to the second interface 602, and the first connecting line 400 and the second connecting line 500 are respectively used as the charging and discharging high-voltage and low-voltage wire harnesses of the battery cluster and do not intersect, which can greatly improve the anti-interference performance of the energy storage system, greatly improve the reliability of the energy storage system, and ensure that the energy storage system can operate efficiently and stably.

[0037] Please refer to Figure 2 and Figure 3 , Figure 2 , which are the first structural schematic diagram of the battery cluster provided by the embodiments of the application. Figure 3 , which is the second structural schematic diagram of the battery cluster provided by the embodiments of the application.

[0038] As shown in Figure 2 and Figure 3 , the application provides a battery cluster, which includes:

[0039] at least one battery module 100, the battery module 100 is provided with a first charge-discharge interface 101 and a second charge-discharge interface 102;

[0040] a first connector 200, one end of the first connector 200 is electrically connected to the first charge-discharge interface 101;

[0041] a second connector 300, one end of the second connector 300 is electrically connected to the second charge-discharge interface 102;

[0042] a first connecting line 400, one end of the first connecting line 400 is electrically connected to the other end of the first connector 200;

[0043] a second connecting line 500, one end of the second connecting line 500 is electrically connected to the other end of the second connector 300, and the first connecting line 400 and the second connecting line 500 do not cross each other;

[0044] a high-voltage box 600, provided with a first interface 601 and a second interface 602, the first interface 601 is electrically connected to the other end of the first connecting line 400, and the second interface 602 is electrically connected to the other end of the second connecting line 500.

[0045] Specifically, in the vertical direction, the high-voltage box 600 mentioned in the present application is not between two battery modules 100, and the battery module 100 is only above or below the high-voltage box 600, that is, the high-voltage upper box is stacked with the battery module 100 of the battery cluster, and the high-voltage box 600 is not stacked above the other battery modules 100 of the battery cluster, or the high-voltage box 600 is stacked above the battery module 100 of the battery cluster, and the other battery modules 100 of the battery cluster are not stacked above the high-voltage box 600. Wherein, the battery module 100 can be a battery pack.

[0046] Further, one end of the first connector 200 of the battery cluster is electrically connected to the first charge-discharge interface 101 of the battery module 100, the other end of the first connector 200 is electrically connected to the first interface 601 of the high-voltage box 600 through the first connecting line 400, one end of the second connector 300 of the battery cluster is electrically connected to the second charge-discharge interface 102 of the battery module 100, and the other end of the second connector 300 is electrically connected to the second interface 602 of the high-voltage box 600 through the second connecting line 500. At this time, it can be seen that there is no intersection between the first connecting line 400 (which can be understood as a high-voltage wire harness, that is, a wire harness at the positive pole of the charge-discharge interface on the high-voltage box 600) and the second connecting line 500 (which can be understood as a low-voltage wire harness, that is, a wire harness at the negative pole of the charge-discharge interface on the high-voltage box 600). Further, the technical problem of poor anti-interference caused by the intersection between the high-voltage wire harness and the low-voltage wire harness during the operation of the battery cluster and the energy storage system of the battery cluster can be avoided, greatly improving the reliability of the battery cluster and the energy storage system, and ensuring that the battery cluster and the energy storage system can operate efficiently and stably.

[0047] The first charge-discharge interface 101 can be understood as the positive pole of the battery cell in the battery module 100, and the second charge-discharge interface 102 can be understood as the negative pole of the battery cell in the battery module 100. When the battery cluster includes multiple battery modules 100, one end of the first connector 200 is electrically connected to the first charge-discharge interface 101 of one of the battery modules 100 in the battery cluster, and the other end of the second connector 300 is electrically connected to the second charge-discharge interface 102 of another of the battery modules 100 in the battery cluster. The first charge-discharge interface 101 and the second charge-discharge interface 102 are used to connect adjacent two battery modules 100 in series. Alternatively, when the battery cluster includes multiple battery modules 100, one end of the first connector 200 can be electrically connected to the first charge-discharge interface 101 of all the battery modules 100 in the battery cluster, and the other end of the second connector 300 can be electrically connected to the second charge-discharge interface 102 of all the battery modules 100 in the battery cluster. The first charge-discharge interface 101 and the second charge-discharge interface 102 are used to electrically connect each battery module 100 in parallel.

[0048] In some embodiments, as shown in Figure 2 and Figure 3 The battery cluster further includes a third connecting line 700, one end of which is electrically connected to one end of the first connector 200, and the other end of the third connecting line 700 is electrically connected to the first charge-discharge interface 101. The third connecting line 700 and the second connecting line 500 do not intersect.

[0049] In the embodiment, the first connector 200 is electrically connected with the first charge-discharge interface 101 through a third connecting line 700. The third connecting line 700 can also be understood as a high-voltage wire harness, that is, a wire harness at the positive pole of the charge-discharge interface of the battery module. By not crossing the third connecting line 700 and the second connecting line 500, the crossing between the high-voltage wire harness and the low-voltage wire harness of the battery cluster can be avoided, thereby greatly improving the reliability of the battery cluster and the energy storage system, and ensuring that the battery cluster and the energy storage system can operate efficiently and stably.

[0050] In some embodiments, as shown in Figure 2 and Figure 3 , the battery cluster further includes a fourth connecting line 800; one end of the fourth connecting line 800 is electrically connected with one end of the second connector 300, and the other end of the fourth connecting line 800 is electrically connected with the second charge-discharge interface 102; the fourth connecting line 800 does not cross the first connecting line 400.

[0051] In the embodiment, the second connector 300 is electrically connected with the second charge-discharge interface 102 through the fourth connecting line 800. The fourth connecting line 800 can also be understood as a low-voltage wire harness, that is, a wire harness at the negative pole of the charge-discharge interface of the battery module. By not crossing the fourth connecting line 800 and the first connecting line 400, the crossing between the high-voltage wire harness and the low-voltage wire harness of the battery cluster can be avoided, thereby greatly improving the reliability of the battery cluster and the energy storage system, and ensuring that the battery cluster and the energy storage system can operate efficiently and stably.

[0052] It should be noted that, in order to ensure that the battery cluster can operate efficiently and stably, the first connecting line 400 and the third connecting line 700 do not cross the second connecting line 500 and the fourth connecting line 800.

[0053] In some embodiments, as shown in Figure 2 , the battery module 100 is stacked above the high-voltage box 600.

[0054] Specifically, the battery module 100 in the battery cluster is stacked above the high-voltage box 600, and the high-voltage box 600 is not stacked above the battery module 100 in the battery cluster, thereby preventing the crossing between the high-voltage wire harness and the low-voltage wire harness of the battery cluster when the high-voltage box 600 is electrically connected with the battery module 100 in the battery cluster, thereby greatly improving the reliability of the battery cluster and the energy storage system, and ensuring that the battery cluster and the energy storage system can operate efficiently and stably.

[0055] Further, in some embodiments, as shown in Figure 2 , the battery cluster includes a plurality of battery modules 100, and the plurality of battery modules 100 are stacked above the high-voltage box 600.

[0056] In the embodiment, multiple battery modules 100 exist in the battery cluster, and all the battery modules 100 in the battery cluster are stacked above the high-voltage box 600, so that the high-voltage box 600 does not cross the high-voltage harness and the low-voltage harness of the battery cluster when electrically connecting between the battery modules 100 in the battery cluster.

[0057] In addition, the high-voltage box 600 is located at the lower position in the battery cluster, and since most of the devices in the high-voltage box 600 are not fragile devices, the maintenance personnel of the battery cluster can avoid using the heightening equipment to repair and replace when the device in the high-voltage box 600 is damaged, thereby reducing the maintenance difficulty of the high-voltage box 600 and improving the safety of the maintenance personnel.

[0058] In some embodiments, as shown in Figure 3 , the high-voltage box 600 is stacked above the battery modules 100.

[0059] Specifically, the high-voltage box 600 is stacked above the battery modules 100 in the battery cluster, and there is no battery module 100 in the battery cluster stacked above the high-voltage box 600, so that the high-voltage box 600 does not cross the high-voltage harness and the low-voltage harness of the battery cluster when electrically connecting between the battery modules 100 in the battery cluster, thereby greatly improving the reliability of the battery cluster and the energy storage system, and ensuring that the battery cluster and the energy storage system can operate efficiently and stably.

[0060] Further, in some embodiments, as shown in Figure 2 , the battery cluster includes multiple battery modules 100, and the high-voltage box 600 is stacked above the multiple battery modules 100.

[0061] In the embodiment, multiple battery modules 100 exist in the battery cluster, and after all the battery modules 100 in the battery cluster are stacked, the high-voltage box 600 is stacked above the uppermost battery module 100, so that the high-voltage box 600 does not cross the high-voltage harness and the low-voltage harness of the battery cluster when electrically connecting between the battery modules 100 in the battery cluster.

[0062] In some embodiments, as shown in Figure 2 and Figure 3 , the battery module 100 is further provided with a first communication interface 103, the high-voltage box 600 is provided with a second communication interface 603, and the first communication interface 103 is electrically connected with the second communication interface 603.

[0063] Specifically, after the first communication interface 103 is electrically connected with the second communication interface 603, the charge and discharge information of the battery modules 100 in the battery cluster can be transmitted to the battery management system through the high-voltage box 600 to realize communication with the battery management system. Wherein, the low-voltage communication of the battery cluster mainly depends on the CAN and RS485 communication protocols, through which efficient and stable information exchange and control between the battery cluster and the battery management system can be realized, and meanwhile, information transmission and control between the battery clusters of the energy storage system can also be ensured.

[0064] Further, in some embodiments, as shown in Figure 2 and Figure 3 , the battery cluster comprises a plurality of battery modules 100, and the first communication interfaces 103 of the battery modules 100 are electrically connected.

[0065] In the present embodiment, after the first communication interfaces 103 of the battery modules 100 are electrically connected, the second communication interface 603 on the high-voltage box 600 can be electrically connected, and communication with the battery management system can be realized through the high-voltage box 600, so that efficient and stable information exchange and control between the battery cluster and the battery management system can be realized, and meanwhile, information transmission and control between the battery clusters of the energy storage system can also be ensured.

[0066] In some embodiments, as shown in Figure 2 and Figure 3 , the high-voltage box 600 is further provided with a third interface 604 and a fourth interface 605, and the third interface 604 and the fourth interface 605 are respectively electrically connected with a target device.

[0067] In the present embodiment, the target device can be an energy storage converter, which can control the charging and discharging process of the power supply branch, and can also convert AC and DC, and can directly supply power to the AC load in the absence of power grid. Meanwhile, the application can also set an isolation switch between the energy storage converter and the high-voltage box 600, so that when the high-voltage box 600 cannot be disconnected, the isolation switch can be used to disconnect the main circuit of the energy storage system in which the battery cluster is located, so as to further ensure the safety performance of the energy storage system.

[0068] In some embodiments, as shown in Figure 2 and Figure 3 , the battery cluster further comprises a plurality of fifth connection lines 900 and a plurality of battery modules 100; wherein one end of each fifth connection line 900 is electrically connected with the first charge and discharge interface 101 of one battery module 100, the other end of each fifth connection line 900 is electrically connected with the second charge and discharge interface 102 of another battery module 100, and the number difference between the fifth connection line 900 and the battery module 100 is a preset number.

[0069] In the embodiment, the target device can be an energy storage converter, and the energy storage converter and the high-voltage box 600 also have high-voltage harnesses and low-voltage harnesses. When the battery modules 100 in the battery cluster are stacked above the high-voltage box 600 and the high-voltage box 600 is not stacked above the battery modules 100 in the battery cluster, the first charging and discharging interface 101 of the uppermost battery module 100 needs to be electrically connected to the first interface 601 of the high-voltage box 600 through the first connector 200, and the second charging and discharging interface 102 of the battery module 100 adjacent to the high-voltage box 600 needs to be electrically connected to the second interface 602 of the high-voltage box 600 through the second connector 300. At this time, the first connector 200, the second connector 300, and the high-voltage harnesses and low-voltage harnesses of the energy storage converter can be the shortest, compared with the arrangement of the high-voltage harnesses and low-voltage harnesses in the high-voltage box 600 in the prior art, the first preset length can be reduced, and the first preset length can be 3 m. Figure 1

[0070] When the high-voltage box 600 is stacked above the battery modules 100 in the battery cluster and there is no battery module 100 stacked above the high-voltage box 600 in the battery cluster, the first charging and discharging interface 101 of the battery module 100 adjacent to the high-voltage box 600 needs to be electrically connected to the first interface 601 of the high-voltage box 600 through the first connector 200, and the second charging and discharging interface 102 of the lowermost battery module 100 needs to be electrically connected to the second interface 602 of the high-voltage box 600 through the second connector 300. At this time, the first connector 200, the second connector 300, and the high-voltage harnesses and low-voltage harnesses of the energy storage converter can be the shortest, compared with the arrangement of the high-voltage harnesses and low-voltage harnesses in the high-voltage box 600 in the prior art, the first preset length can be reduced, and the first preset length can be 3 m. Figure 1

[0071] In some embodiments, the application also provides an energy storage system, which at least includes the battery cluster of the first aspect.

[0072] The energy storage system provided by the application can be formed by series and parallel connection of a plurality of battery clusters. Preferably, the energy storage system includes a plurality of battery clusters, a first busbar, and a second busbar, and after the plurality of battery clusters are connected in parallel, the third interface 604 of each battery cluster is electrically connected to the target device through the first busbar, and the fourth interface 605 of each battery cluster is electrically connected to the target device through the second busbar.

[0073] ​​The battery cluster and energy storage system provided by the application, the battery cluster comprises at least one battery module 100, a first connector 200, a second connector 300, a first connecting line 400, a second connecting line 500 and a high-voltage box 600, the battery module 100 is provided with a first charging and discharging interface 101 and a second charging and discharging interface 102, the high-voltage box 600 is provided with a first interface 601 and a second interface 602, one end of the first connector 200 is electrically connected with the first charging and discharging interface 101, the other end of the first connector 200 is electrically connected with one end of the first connecting line 400, the other end of the first connecting line 400 is electrically connected with the first interface 601, one end of the second connector 300 is electrically connected with the second charging and discharging interface 102, the other end of the second connector 300 is electrically connected with one end of the second connecting line 500, the other end of the second connecting line 500 is electrically connected with the second interface 602, the first connecting line 400 and the second connecting line 500 are respectively used as the charging and discharging high and low voltage wire harness of the battery cluster and are not crossed, so that the anti-interference of the energy storage system can be greatly improved, the reliability of the energy storage system is greatly improved, and the efficient and stable operation of the energy storage system is ensured.

[0074] The above is merely a specific implementation of the application, but the protection scope of the application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the application, and these modifications or replacements shall be encompassed within the protection scope of the application. Therefore, the protection scope of the application shall be subject to the protection scope of the claims.

[0075] It should be understood that one of ordinary skill in the art can recognize that the application can be implemented without using these specific details. In other examples, known structures and processes are not described in detail to avoid unnecessary detail making the description of the application obscure. Therefore, the application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope consistent with the principles disclosed by the application.

Claims

1. A battery cluster, characterized in that, include: At least one battery module, wherein the battery module is provided with a first charging / discharging interface and a second charging / discharging interface; A first connector, one end of which is electrically connected to the first charging / discharging interface; The second connector, one end of which is electrically connected to the second charging / discharging interface; A first connecting line, one end of which is electrically connected to the other end of the first connector; The second connecting line has one end electrically connected to the other end of the second connector, and the first connecting line and the second connecting line do not cross each other; The high-voltage box is provided with a first interface and a second interface. The first interface is electrically connected to the other end of the first connecting line, and the second interface is electrically connected to the other end of the second connecting line.

2. The battery cluster according to claim 1, characterized in that, The battery cluster also includes a third connecting line; Wherein, one end of the third connecting line is electrically connected to one end of the first connector, and the other end of the third connecting line is electrically connected to the first charging and discharging interface; the third connecting line does not cross with the second connecting line.

3. The battery cluster according to claim 1, characterized in that, The battery cluster also includes a fourth connecting line; Wherein, one end of the fourth connecting line is electrically connected to one end of the second connector, and the other end of the fourth connecting line is electrically connected to the second charging and discharging interface; the fourth connecting line does not cross with the first connecting line.

4. The battery cluster according to claim 1, characterized in that, The battery cluster includes multiple battery modules, which are stacked on top of the high-voltage box.

5. The battery cluster according to claim 1, characterized in that, The battery cluster includes multiple battery modules, and the high-voltage box is stacked on top of the multiple battery modules.

6. The battery cluster according to any one of claims 1-5, characterized in that, The battery module is also provided with a first communication interface, and the high voltage box is provided with a second communication interface. The first communication interface and the second communication interface are electrically connected.

7. The battery cluster according to claim 6, characterized in that, The battery cluster includes multiple battery modules, and the first communication interfaces of each battery module are electrically connected to each other.

8. The battery cluster according to any one of claims 1-5, characterized in that, The high-voltage box is also equipped with a third interface and a fourth interface, which are electrically connected to the target equipment respectively.

9. The battery cluster according to any one of claims 1-5, characterized in that, The battery cluster also includes multiple fifth connection lines and multiple battery modules; Each of the fifth connecting lines has one end electrically connected to the first charging / discharging interface of a battery module, and the other end electrically connected to the second charging / discharging interface of another battery module. The difference in the number of the fifth connecting lines and the battery modules is a preset number.

10. An energy storage system, characterized in that, It includes at least the battery clusters according to any one of claims 1-9.

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