Copper bar connecting structure of lithium battery module

Abstract

The utility model discloses a copper bar connecting structure of a lithium battery module, and belongs to the technical field of batteries. The lithium battery module copper bar connecting structure comprises a middle line copper bar assembly, a series connection copper bar, an input end copper bar, a connection copper bar and an output end copper bar. A cabinet stand column is arranged in the cabinet frame, and the center line copper bar assembly is fixedly arranged on the cabinet stand column. The battery modules are connected in series through the series copper bars, and the battery modules are connected with the middle line copper bar assembly through the connecting copper bars; the battery module is connected with the battery management system through the input end copper bar, and the output end copper bar is arranged at the output end of the battery management system. According to the utility model, the problems of mess and unattractiveness caused by cable connection of the battery modules in the cabinet are solved; according to the copper bar connecting structure, the problems of copper bar layout, lap joint fixation and insulation protection in a limited space are solved.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and in particular relates to a copper busbar connection structure for lithium battery modules. Background Technology

[0002] The mainstream method for connecting lithium battery modules in series and parallel is currently using cables.

[0003] Cable connections present challenges due to the shape and structure of cables, their large diameter, and the need for sufficient space for cable bends and bundling. Furthermore, cables generate significant heat, requiring high levels of heat dissipation and ventilation from the server rack. The high cost of cables, coupled with limited rack space, prevents complete cable-free connections between batteries within the rack. This also impacts the overall aesthetics and design of the server rack. Summary of the Invention

[0004] This utility model provides a copper busbar connection structure for lithium battery modules, aiming to solve the problem of messy and unsightly connections of battery modules in cabinets caused by cables.

[0005] The present invention is implemented as follows:

[0006] A lithium battery module copper busbar connection structure includes a cabinet frame, several battery modules, and a battery management system. The battery modules and the battery management system are disposed in the cabinet frame. The lithium battery module copper busbar connection structure also includes a center copper busbar assembly, a series copper busbar, an input copper busbar, a connecting copper busbar, and an output copper busbar.

[0007] The cabinet frame is equipped with cabinet columns, and the center copper busbar assembly is fixedly mounted on the cabinet columns; the battery modules are connected in series via the series copper busbars, and the battery modules are connected to the center copper busbar assembly via the connecting copper busbars; the battery modules are connected to the battery management system via the input copper busbars, and the output copper busbars are provided at the output end of the battery management system;

[0008] The centerline copper busbar assembly includes a centerline copper busbar, a wrapping trough, a trough cover, and a connecting cover; the centerline copper busbar is disposed within the wrapping trough; the wrapping trough and the trough cover are matched and disposed, and the wrapping trough is provided with a connecting port, and the connecting cover is matched and disposed with the connecting port; the connecting copper busbar and the centerline copper busbar are connected at the connecting port.

[0009] Preferably, there are multiple connecting covers and connectors, which can be applied to various battery module arrangements. By setting multiple connecting covers and connectors on the center copper busbar assembly, different application scenarios corresponding to different numbers of battery modules can be applied; it also facilitates flexible matching of battery modules in the battery system.

[0010] Preferably, the center copper busbar has a connecting copper busbar mounting hole at the matching point of the connector. The connecting copper busbar mounting hole facilitates the installation and connection of the center copper busbar and the connecting copper busbar.

[0011] Preferably, the cable tray cover is mounted on the wrapping cable tray via a sliding groove structure.

[0012] Preferably, the connecting cover and the groove cover are alternately arranged on the wrapping groove.

[0013] Preferably, the centerline copper busbar assembly further includes an insulator, and the centerline copper busbar is fixedly disposed in the enclosing groove by means of the insulator.

[0014] Preferably, the centerline copper busbar assembly further includes an end cover, which is disposed on the end of the wrapping groove away from the connecting cover.

[0015] Preferably, the center copper busbar assembly is disposed in the middle of the cabinet frame.

[0016] Preferably, the centerline copper busbar is a hard copper busbar.

[0017] Preferably, one end of the cabinet column is fixedly mounted on the bottom surface inside the cabinet frame.

[0018] Preferably, the cabinet uprights are provided with upright fixing holes, which fix the center copper busbar assembly to the module tray inside the cabinet frame.

[0019] Preferably, heat shrink tubing is provided on the outer side of the series copper busbar, the input copper busbar, the connecting copper busbar, and the output copper busbar.

[0020] Preferably, the ends of the series copper busbar, the input copper busbar, the connecting copper busbar, and the output copper busbar are respectively provided with copper busbar fixing holes.

[0021] Preferably, the series copper busbar, the input copper busbar, the connecting copper busbar, and the output copper busbar are all flexible copper busbars.

[0022] Preferably, the input copper busbar includes a positive input copper busbar, an N-type input copper busbar, and a negative input copper busbar.

[0023] Preferably, the output copper busbar includes an output positive copper busbar, an output N-pole copper busbar, and an output negative copper busbar; the output copper busbar can be connected to a combiner cabinet or UPS.

[0024] This utility model provides a copper busbar connection structure for lithium battery modules, which connects two symmetrical clusters of battery modules in series via copper busbars. These busbars are then connected to the battery management system. A pre-installed centerline copper busbar assembly in the center of the cabinet enables both three-wire and two-wire connections. This solution is simple and aesthetically pleasing, replacing the unsightly and costly cable-connected design of traditional lithium battery modules. It also saves space and achieves complete cable elimination for module connections. The connection structure includes connections between battery modules and between the battery modules and the battery management system, achieving a fixed connection between the copper busbars.

[0025] The beneficial effects achieved by this utility model are:

[0026] This utility model's lithium battery module copper busbar connection structure solves the messy and unsightly problem caused by cable connections between battery modules in a cabinet through the coordinated operation of the centerline copper busbar assembly, series copper busbars, input copper busbars, connecting copper busbars, and output copper busbars. Furthermore, the copper busbars offer better current carrying capacity than cable connections, allowing for high current carrying capacity applications. This copper busbar connection structure effectively addresses copper busbar layout, splicing, and insulation protection within a limited space. The centerline copper busbar assembly's aggregation function, through the matching of multiple connecting covers and ports, enables flexible configuration for different numbers of battery modules, facilitating flexible battery module combinations within the battery system. This results in neat copper busbar connections, cost savings, space conservation, and a clean and aesthetically pleasing module assembly interface. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the copper busbar connection structure of the lithium battery module according to an embodiment of the present invention;

[0028] Figure 2 This is an exploded view of the centerline copper busbar assembly according to an embodiment of the present utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the cabinet frame and copper busbar assembly in an embodiment of this utility model. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, top, bottom, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] It should be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] Currently, the connection of battery modules within a cabinet via cables results in a messy and unsightly appearance. To address this technical problem, this invention proposes a copper busbar connection structure for lithium battery modules.

[0036] Example

[0037] like Figures 1 to 3 As shown, a lithium battery module copper busbar connection structure includes a cabinet frame 1, several battery modules 2, and a battery management system 3. The battery modules 2 and the battery management system 3 are disposed in the cabinet frame 1. The lithium battery module copper busbar connection structure also includes a center copper busbar assembly 4, a series copper busbar 5, an input copper busbar 6, a connecting copper busbar 7, and an output copper busbar 8.

[0038] The cabinet frame 1 is equipped with a cabinet column 11, and the center line copper busbar assembly 2 is fixedly installed on the cabinet column 11; the battery modules 2 are connected in series by the series copper busbar 3, and the battery modules 2 and the center line copper busbar assembly 2 are connected by the connecting copper busbar 7; the battery modules 2 and the battery management system 3 are connected by the input copper busbar 4, and the output copper busbar 6 is provided at the output end of the battery management system 3;

[0039] like Figure 2 As shown, the centerline copper busbar assembly 4 includes a centerline copper busbar 41, a wrapping groove 42, a groove cover 43, and a connecting cover 44; the centerline copper busbar 41 is disposed within the wrapping groove 42; the wrapping groove 42 and the groove cover 43 are matched and disposed, the wrapping groove 42 is provided with a connecting port 421, and the connecting cover 44 is matched and disposed with the connecting port 421; the connecting copper busbar 7 is connected to the centerline copper busbar 41 at the connecting port 421.

[0040] Preferably, there are multiple connecting covers 44 and connecting ports 421, and multiple connecting covers 44 can be applied to various arrangement methods of battery modules 2. In this embodiment, specifically: as follows: Figure 1 As shown, when 12 battery modules 2 are installed in the rack 1, the connecting port 421 at the far end of the center copper busbar 41 is connected to the connecting copper busbar 7; when 10 battery modules 2 are installed in the rack 1, the bottom two battery modules 2 are not installed, and the second connecting port 421 at the end of the center copper busbar 41 is connected to the connecting copper busbar 7; when 8 battery modules 2 are installed in the rack 1, the bottom four battery modules are not installed, and the third connecting port 421 at the end of the center copper busbar 41 is connected to the connecting copper busbar 7; by setting multiple connecting covers 44 and connecting ports 421 on the center copper busbar assembly 4, different application scenarios corresponding to different numbers of battery modules 2 can be applied; and the battery modules of the battery system can be flexibly matched.

[0041] Preferably, the center copper busbar 41 is provided with a connecting copper busbar mounting hole 411 at the matching position of the connecting port 421. The connecting copper busbar mounting hole 411 facilitates the installation and connection of the center copper busbar 41 and the connecting copper busbar 7.

[0042] Preferably, the groove cover 43 is mounted on the wrapping groove 42 via a sliding groove structure.

[0043] Preferably, the connecting cover 44 and the groove cover 43 are alternately arranged on the wrapping groove 42.

[0044] Preferably, the centerline copper busbar assembly 4 further includes an insulator 45, and the centerline copper busbar 41 is fixedly disposed in the enclosing groove 42 by means of the insulator 45.

[0045] Preferably, the centerline copper busbar assembly 4 further includes an end cover 46, which is disposed on the end of the wrapping groove 42 away from the connecting cover 44.

[0046] Preferably, the center copper busbar assembly 4 is disposed in the middle of the cabinet frame 1.

[0047] Preferably, the centerline copper busbar 41 is a hard copper busbar.

[0048] Preferably, one end of the cabinet column 11 is fixedly mounted on the bottom surface inside the cabinet frame 1.

[0049] Preferably, the cabinet column 11 is provided with column fixing holes 111, which fix the center copper busbar assembly 4 to the module tray inside the cabinet frame 1.

[0050] Preferably, heat shrink tubing is provided on the outer side of the series copper busbar 5, the input copper busbar 6, the connecting copper busbar 7, and the output copper busbar 8.

[0051] Preferably, the ends of the series copper busbar 5, the input copper busbar 6, the connecting copper busbar 7, and the output copper busbar 8 are respectively provided with copper busbar fixing holes.

[0052] Preferably, the series copper busbar 5, the input copper busbar 6, the connecting copper busbar 7, and the output copper busbar 8 are all soft copper busbars.

[0053] Preferably, the input copper busbar 6 includes an input positive copper busbar 61, an input N-pole copper busbar 62, and an input negative copper busbar 63.

[0054] Preferably, the output copper busbar 8 includes an output positive copper busbar 81, an output N-pole copper busbar 82, and an output negative copper busbar 83; the output copper busbar 8 can be connected to a combiner cabinet or UPS.

[0055] This utility model provides a copper busbar connection structure for lithium battery modules, which connects two symmetrical clusters of battery modules in series via copper busbars. These busbars are then connected to the battery management system. A pre-installed centerline copper busbar assembly in the center of the cabinet enables both three-wire and two-wire connections. This solution is simple and aesthetically pleasing, replacing the unsightly and costly cable-connected design of traditional lithium battery modules. It also saves space and achieves complete cable elimination for module connections. The connection structure includes connections between battery modules and between the battery modules and the battery management system, achieving a fixed connection between the copper busbars.

[0056] The beneficial effects achieved by this utility model are:

[0057] This utility model's lithium battery module copper busbar connection structure solves the messy and unsightly problem caused by cable connections between battery modules in a cabinet through the coordinated operation of the centerline copper busbar assembly, series copper busbars, input copper busbars, connecting copper busbars, and output copper busbars. Furthermore, the copper busbars offer better current carrying capacity than cable connections, allowing for high current carrying capacity applications. This copper busbar connection structure effectively addresses copper busbar layout, splicing, and insulation protection within a limited space. The centerline copper busbar assembly's aggregation function, through the matching of multiple connecting covers and ports, enables flexible configuration for different numbers of battery modules, facilitating flexible battery module combinations within the battery system. This results in neat copper busbar connections, cost savings, space conservation, and a clean and aesthetically pleasing module assembly interface.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A copper busbar connection structure for lithium battery modules, comprising a rack, a plurality of battery modules, and a battery management system, wherein the battery modules and the battery management system are disposed within the rack, characterized in that: It also includes a neutral copper busbar assembly, a series copper busbar, an input copper busbar, a connecting copper busbar, and an output copper busbar; The cabinet frame is equipped with cabinet columns, and the center copper busbar assembly is fixedly mounted on the cabinet columns; the battery modules are connected in series via the series copper busbars, and the battery modules are connected to the center copper busbar assembly via the connecting copper busbars; the battery modules are connected to the battery management system via the input copper busbars, and the output copper busbars are provided at the output end of the battery management system.

2. The lithium battery module copper busbar connection structure according to claim 1, characterized in that: The centerline copper busbar assembly includes a centerline copper busbar, a wrapping trough, a trough cover, and a connecting cover; the centerline copper busbar is disposed within the wrapping trough; the wrapping trough and the trough cover are matched and disposed, and the wrapping trough is provided with a connecting port, and the connecting cover is matched and disposed with the connecting port; the connecting copper busbar and the centerline copper busbar are connected at the connecting port.

3. The lithium battery module copper busbar connection structure according to claim 2, characterized in that: There are multiple connecting covers and connecting ports.

4. The lithium battery module copper busbar connection structure according to claim 2, characterized in that: The centerline copper busbar is provided with a connecting copper busbar mounting hole at the matching point of the connecting port.

5. The lithium battery module copper busbar connection structure according to claim 2, characterized in that: The cable tray cover is mounted on the wrapping cable tray via a sliding groove structure.

6. The lithium battery module copper busbar connection structure according to claim 2, characterized in that: The connecting cover and the groove cover are alternately arranged on the wrapped groove.

7. The lithium battery module copper busbar connection structure according to claim 2, characterized in that: The centerline copper busbar assembly also includes an insulator, and the centerline copper busbar is fixedly installed in the enclosing groove by means of the insulator.

8. The lithium battery module copper busbar connection structure according to claim 2, characterized in that: The centerline copper busbar assembly also includes an end cover, which is disposed on the end of the wrapping groove away from the connecting cover.

9. The lithium battery module copper busbar connection structure according to claim 1, characterized in that: Heat shrink tubing is provided on the outer side of the series copper busbar, the input copper busbar, the connecting copper busbar and the output copper busbar respectively; The ends of the series copper busbar, the input copper busbar, the connecting copper busbar, and the output copper busbar are respectively provided with copper busbar fixing holes.

10. The lithium battery module copper busbar connection structure according to claim 1, characterized in that: The input copper busbar includes an input positive copper busbar, an input N-pole copper busbar, and an input negative copper busbar. The output copper busbar includes an output positive copper busbar, an output N-pole copper busbar, and an output negative copper busbar.

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