Busbar protection assembly and battery pack

Abstract

The utility model discloses a busbar protection assembly and a battery pack, and belongs to the technical field of lithium ion batteries, the busbar protection assembly comprises a support, and the support is provided with a mounting channel; the soft copper bar comprises a main body section, a turnover section and a connecting section, and the turnover section and the connecting section are connected to the two ends of the main body section; the main body section is longitudinally mounted in the mounting channel, the turnover section is longitudinally turned over and is close to the main body section, and the length direction of the turnover section intersects with the length direction of the main body section. The battery pack comprises a box body, a battery module and the busbar protection assembly, the bracket fixes the soft copper bar towards the direction of the battery module and reserves an inspection viewport, and the hard copper bar is arranged across the battery module. Enough space is reserved in the battery pack to arrange the inspection viewport, so that the states of the water nozzle and the plug-in can be inspected through the inspection viewport when a battery pack product is off line, and the product yield is improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery technology, specifically to a busbar protection component and a battery pack. Background Art

[0002] Currently, most electric vehicles use lithium-ion batteries, with a typical driving range of 300 to 500 kilometers, while high-end electric vehicles may achieve a range of 600 kilometers. Improving driving range can be achieved through methods such as increasing energy density. The battery's energy density (energy storage capacity per unit volume or unit weight) determines its driving range performance; increasing energy density can increase driving range. How to improve battery driving range without significantly increasing battery size and weight is a problem worthy of further research.

[0003] For example, Chinese patent document CN117438748A discloses a copper busbar assembly and a battery pack. The copper busbar assembly includes: a rigid copper busbar; a bracket with an installation channel. The rigid copper busbar is installed on the bracket through the installation channel, the width of which is less than its height, so that at least part of the rigid copper busbar is installed longitudinally. The bracket and the rigid copper busbar are installed in the center of the battery pack, between two battery modules. While this technical solution can save space inside the battery pack housing, the condition of the water nozzles and connectors in the middle position needs to be checked before the battery pack rolls off the production line. This requires the design of an inspection port, which is generally located near the edge of the battery pack housing. Copper busbars are typically located near the edge, and their width may obstruct the inspection port. Utility Model Content

[0004] The purpose of this utility model is to provide a busbar protection component and a battery pack, which solves the problem in the prior art that the edge inspection view of the battery pack near the edge may be blocked by a wide copper busbar, making it impossible to observe the status of the water nozzle and plug-in.

[0005] To achieve the above objectives, this utility model provides a busbar protection assembly, including...

[0006] The bracket is provided with an installation channel;

[0007] It also includes a soft copper busbar, which includes a main body section, a folded section and a connecting section. The folded section and the connecting section are connected to both ends of the main body section. The main body section is installed longitudinally in the installation channel. The folded section is folded longitudinally and close to the main body section. The length direction of the folded section intersects the length direction of the main body section.

[0008] The bracket secures the flexible copper busbars via the mounting channel, preventing them from deforming or shifting due to their softness and resulting in a messy arrangement. Furthermore, the main body of the flexible copper busbars is installed longitudinally within the mounting channel, making efficient use of vertical space and reducing their lateral space occupation. This allows for sufficient internal space within the battery pack to accommodate inspection ports, enabling the inspection of water taps and connectors during battery pack production and improving product yield.

[0009] Furthermore, the flexible copper busbars include two that are arranged side by side, and the bracket is provided with two mounting channels corresponding to the two flexible copper busbars, with the two flexible copper busbars spaced apart.

[0010] Two flexible copper busbars can increase the current carrying capacity of the copper busbar, reduce the current carrying pressure of a single copper busbar, and improve the current carrying efficiency. The bracket installs the two flexible copper busbars through two mounting channels and sets them apart to increase the heat dissipation capacity between the two flexible copper busbars and prevent excessive heat concentration when the flexible copper busbars are carrying current.

[0011] Furthermore, the bracket includes several side plates and a base plate, with the side plates vertically arranged at intervals on the base plate to form an installation channel that extends through both ends.

[0012] The installation channel is open at both ends, allowing the main body of the flexible copper busbar to pass through and extend in both directions.

[0013] Furthermore, the width of the mounting channel is less than its height.

[0014] The installation channel minimizes the volume occupied in the width direction and maximizes the longitudinal space of the bracket to ensure that the main body of the soft copper busbar has sufficient volume in the longitudinal space to meet the current carrying efficiency requirements.

[0015] Furthermore, the bottom end of one side plate extends beyond the edge of the base plate, and a reinforcing rib is provided between the bottom ends of the base plate and the side plate.

[0016] Reinforcing ribs can increase the structural strength between the base plate and the side plates, and improve the stability of the side plate structure.

[0017] Furthermore, the side plate connected to the reinforcing rib is provided with several fasteners, which are used to fix the bracket.

[0018] The clips secure the bracket by pressing it, making the bracket fixing method simple and convenient.

[0019] Furthermore, the plurality of the fasteners include a first fastener and a second fastener, the total number of the first fastener and the second fastener is at least three, and the first fastener and the second fastener are coplanar but not collinear.

[0020] The total number of first and second clips is at least three, which can form a fixed plane, increasing the connection stability of the bracket and effectively preventing the bracket from swaying in the Y and Z directions, thus increasing the reliability of fixing the soft copper busbar.

[0021] Furthermore, the folding section is connected to a rigid copper busbar, and a bending section is provided at the end of the rigid copper busbar away from the folding section. The bending section cooperates with the folding section to support the rigid copper busbar.

[0022] The connection method of flexible and rigid copper busbars helps reduce costs. At the same time, the more flexible flexible copper busbars can be bent and folded to avoid obstacles as needed, which helps to make rational use of space. The bending section and folding section of the rigid copper busbar support the rigid copper busbar, so that there is a clearance space underneath the rigid copper busbar, which is conducive to the rational arrangement of components inside the battery pack.

[0023] Furthermore, the end of the connecting segment is provided with a connecting hole, through which the connecting segment is connected to electrical components.

[0024] The connection holes facilitate the connection of the flexible copper busbar to electrical components, improving the ease of connection. Secondly, the connection holes reduce the weight of the flexible copper busbar to some extent.

[0025] Furthermore, the two connecting segments are wound around and extended, and the extension lengths of the two connecting segments are different.

[0026] The winding of the connecting sections helps to improve the utilization of space. The different extension lengths of the two connecting sections can connect electrical components in different locations, making the spatial arrangement of the soft copper busbar more reasonable.

[0027] This utility model also provides a battery pack, including a housing, a battery module, and the aforementioned busbar protection assembly. The battery module is disposed inside the housing, and a layout space is provided between one side of the housing and the battery module. The layout space is used to install water taps and plugs. The bracket fixes the soft copper busbar toward the battery module and leaves an inspection viewing port. The hard copper busbar is disposed across the battery module.

[0028] The layout space allows for convenient placement of water nozzles and connectors within the enclosure, preventing interference between them and the battery module. The bracket secures the flexible copper busbars towards the battery module, minimizing their footprint and maximizing space utilization. Furthermore, it maximizes the inspection port space, facilitating inspection of water nozzles and connectors during battery pack production, thus improving product yield.

[0029] Compared with existing known technologies, the technical solution provided by this utility model has the following beneficial effects:

[0030] This utility model discloses a busbar protection component. The bracket secures the flexible copper busbar via an installation channel, preventing deformation and displacement due to its soft material, which could lead to a messy arrangement. Furthermore, the main body of the flexible copper busbar is installed longitudinally within the installation channel, making efficient use of vertical space and reducing its lateral space occupation. This allows for sufficient space inside the battery pack to accommodate inspection ports, enabling the inspection of water nozzles and connectors during battery pack production, thereby improving product yield.

[0031] It is obvious that the elements or features described in the above individual embodiments can be used alone or in combination in other embodiments. Attached Figure Description

[0032] The dimensions and scales in the accompanying drawings do not represent the actual dimensions and scales of the product. The drawings are for illustrative purposes only, and some non-essential elements or features have been omitted for clarity.

[0033] Figure 1 This is a schematic diagram of the busbar protection assembly in an embodiment of this utility model;

[0034] Figure 2 This is a three-dimensional structural schematic diagram (I) of the bracket in an embodiment of this utility model;

[0035] Figure 3 This is a three-dimensional structural schematic diagram (II) of the bracket in an embodiment of this utility model;

[0036] Figure 4 This is a side view of the bracket structure in an embodiment of this utility model;

[0037] Figure 5 This is a schematic diagram of the internal structure of the battery pack in an embodiment of this utility model.

[0038] Explanation of reference numerals in the attached figures

[0039] 100, Bracket; 110, Mounting Channel; 120, Side Plate; 130, Base Plate; 140, Reinforcing Rib; 150, First Clip; 160, Second Clip; 200, Soft Copper Busbar; 210, Main Body Section; 220, Folding Section; 230, Connecting Section; 231, Connecting Hole; 300, Hard Copper Busbar; 310, Bending Section; 400, Housing; 410, Inspection Viewport; 500, Battery Module. DETAILED DESCRIPTION

[0040] The present invention will now be described in detail with reference to the accompanying drawings. The embodiments described herein are merely preferred embodiments of the present invention. Those skilled in the art can conceive of other ways to implement the present invention based on the preferred embodiments, and such other ways also fall within the scope of the present invention.

[0041] Example

[0042] Reference Figures 1-5 This embodiment provides a busbar protection assembly, including a bracket 100 with an installation channel 110; it also includes a flexible copper busbar 200, which includes a main body section 210, a folded section 220, and a connecting section 230, with the folded section 220 and the connecting section 230 connected to both ends of the main body section 210. The bracket 100 fixes the flexible copper busbar 200 through the installation channel 110, preventing it from deforming or shifting due to its soft material, thus avoiding a messy arrangement. The main body section 210 is installed longitudinally in the installation channel 110, which makes reasonable use of the longitudinal space and reduces the lateral space occupied by the flexible copper busbar 200. This allows sufficient space inside the battery pack to accommodate an inspection port 410, which can be used to inspect the water nozzles and plugs when the battery pack is off the production line, improving product yield. The folded section 220 is folded longitudinally and close to the main body section 210, with its length direction intersecting the length direction of the main body section 210. After being folded, the folding section 220 is arranged longitudinally in the same way as the main body section 210, saving space inside the battery pack.

[0043] Furthermore, such as Figures 1-4 As shown, the flexible copper busbar 200 includes two parallel ones. These two flexible copper busbars 200 increase the current-carrying capacity of the copper busbar, reduce the current-carrying pressure of a single copper busbar, and improve current-carrying efficiency. The bracket 100 is provided with two mounting channels 110 corresponding to the two flexible copper busbars 200, which are spaced apart. The two mounting channels 110 fix the flexible copper busbars 200, and the gap between them increases the heat dissipation capacity between the two flexible copper busbars 200, preventing excessive heat concentration during current flow.

[0044] In some embodiments of this application, such as Figures 2-4 As shown, the bracket 100 includes several side plates 120 and a base plate 130. The side plates 120 are vertically and spaced apart on the base plate 130 to form through-hole mounting channels 110. Specifically, three side plates 120 are provided, and the three side plates 120 are vertically arranged to form two mounting channels 110. The two ends of the mounting channels 110 are through-hole, which facilitates the passage of the main body section 210 of the flexible copper busbar 200, allowing the main body section 210 to extend in two directions. Furthermore, the width of the mounting channel 110 is less than its height. The mounting channel 110 can reduce the volume occupied in the width direction and maximize the longitudinal space of the bracket 100 to ensure that the main body section 210 of the flexible copper busbar 200 has sufficient volume in the longitudinal space to meet the current flow efficiency requirements.

[0045] In some embodiments of this application, such as Figure 2 and Figure 4As shown, the bottom end of one side plate 120 extends beyond the edge of the base plate 130, giving the side plate 120 a larger area. A reinforcing rib 140 is provided between the bottom ends of the base plate 130 and the side plate 120. The reinforcing rib 140 can increase the structural connection strength between the base plate 130 and the side plate 120, and improve the stability of the side plate 120 structure.

[0046] Furthermore, such as Figure 3 As shown, the side plate 120 connected to the reinforcing rib 140 is provided with several fasteners for fixing the bracket 100. The side plate 120 connected to the reinforcing rib 140 has a larger area, thus the connection surface used for the fasteners can be more stable. Specifically, the fasteners include first fasteners 150 and second fasteners 160, with a total of at least three first fasteners 150 and second fasteners 160, and the first fasteners 150 and second fasteners 160 are coplanar but not collinear. The total number of at least three first fasteners 150 and second fasteners 160 can form a fixed plane, which can increase the connection stability of the bracket 100, effectively prevent the bracket 100 from swaying in the Y and Z directions, and increase the reliability of fixing the soft copper busbar 200. In this embodiment, there are two first fasteners 150 and two second fasteners 160, with the two first fasteners 150 located above the two second fasteners 160. The two first latches 150 and the two second latches 160 form a four-point installation positioning, which further improves the stability of the bracket 100 installation.

[0047] In some embodiments of this application, such as Figure 1 As shown, the folding section 220 connects the rigid copper busbar 300 and the flexible copper busbar 200. This connection method helps reduce costs, and the more flexible flexible copper busbar 200 can be bent and folded to accommodate different spaces, facilitating efficient space utilization. A bending section 310 is provided at the end of the rigid copper busbar 300 furthest from the folding section 220. The bending section 310, in conjunction with the folding section 220, supports the rigid copper busbar 300, creating clearance space underneath it, which is beneficial for the rational arrangement of components inside the battery pack. It is understood that the end of the connecting section 230 is provided with a connecting hole 231, through which the connecting section 230 connects to electrical components. The connecting hole 231 facilitates the connection of the flexible copper busbar 200 to electrical components, improving the ease of connection. Furthermore, the connecting hole 231 reduces the weight of the flexible copper busbar 200 to some extent. In addition, the two connecting sections 230 are wound and extended, which helps to improve the utilization of space; the two connecting sections 230 have different extension lengths, so that electrical components in different positions can be connected, making the spatial arrangement of the soft copper busbar 200 more reasonable.

[0048] Another aspect of this application provides a battery pack, including a housing 400, a battery module 500, and the aforementioned busbar protection assembly. The battery module 500 is disposed within the housing 400. A layout space is provided between one side of the housing 400 and the battery module 500. This layout space is used to install water nozzles and connectors, facilitating their proper arrangement within the housing 400 and preventing interference between the water nozzles / connectors and the battery module 500. A bracket 100 fixes the flexible copper busbar 200 towards the battery module 500, leaving an inspection port 410. This reduces the space occupied by the flexible copper busbar 200, improving the space utilization rate. Furthermore, it maximizes the space of the inspection port 410, facilitating the inspection of the water nozzles and connectors' status during battery pack production, thus improving product yield. A rigid copper busbar 300 extends across the battery module 500, further utilizing the longitudinal space within the battery pack and improving its internal space utilization rate.

[0049] In the description of this utility model, it should be noted that the terms "front," "rear," "left," "right," "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] The scope of protection of this utility model is defined only by the claims. Thanks to the teachings of this utility model, those skilled in the art will readily recognize that alternative structures to the disclosed structure can be used as feasible alternative implementations, and that the disclosed implementations can be combined to produce new implementations, which also fall within the scope of the appended claims.

Claims

1. A busbar protection assembly, comprising: A bracket (100) having an installation channel (110); Its features are, It also includes a soft copper busbar (200), which includes a main body section (210), a folded section (220) and a connecting section (230). The folded section (220) and the connecting section (230) are connected to both ends of the main body section (210). The main body section (210) is installed longitudinally in the installation channel (110). The folded section (220) is folded longitudinally and close to the main body section (210). The length direction of the folded section (220) intersects the length direction of the main body section (210).

2. A busbar protection assembly according to claim 1, characterized in that, The soft copper busbar (200) includes two and is arranged side by side. The bracket (100) is provided with two mounting channels (110) corresponding to the two soft copper busbars (200). The two soft copper busbars (200) are arranged at intervals.

3. A busbar protection assembly according to claim 1, characterized in that, The bracket (100) includes several side plates (120) and a base plate (130). The several side plates (120) are vertically and spaced apart on the base plate (130) to form the mounting channel (110) that runs through both ends.

4. A busbar protection assembly according to claim 3, characterized in that, The width of the installation channel (110) is less than its height.

5. A busbar protection assembly according to claim 3, characterized in that, The bottom end of one side plate (120) extends beyond the edge of the base plate (130), and a reinforcing rib (140) is provided between the bottom end of the base plate (130) and the bottom end of the side plate (120).

6. A busbar protection assembly according to claim 5, characterized in that, The side plate (120) connected to the reinforcing rib (140) is provided with a plurality of fasteners, which are used to fix the bracket (100).

7. A busbar protection assembly according to claim 6, characterized in that, The plurality of said fasteners include a first fastener (150) and a second fastener (160), wherein the total number of the first fastener (150) and the second fastener (160) is at least three, and the first fastener (150) and the second fastener (160) are coplanar but not collinear.

8. A busbar protection assembly according to claim 1, characterized in that, The folding section (220) is connected to a rigid copper busbar (300). A bending section (310) is provided at the end of the rigid copper busbar (300) away from the folding section (220). The bending section (310) cooperates with the folding section (220) to support the rigid copper busbar (300). A connecting hole (231) is provided at the end of the connecting section (230). The connecting section (230) is connected to electrical components through the connecting hole (231).

9. A busbar protection assembly according to claim 2, characterized in that, The two connecting segments (230) are wound and extended, and the two connecting segments (230) have different extension lengths.

10. A battery pack, characterized in that, The device includes a housing (400), a battery module (500), and a busbar protection assembly as described in any one of claims 1-9. The battery module (500) is disposed inside the housing (400), and a layout space is provided between one side of the housing (400) and the battery module (500). The layout space is used to install water taps and plugs. The bracket (100) fixes the soft copper busbar (200) toward the battery module (500) and leaves an inspection viewing port (410). The hard copper busbar (300) is disposed across the battery module (500).

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