Busbar guard and battery pack

Abstract

The utility model relates to busbar protection piece and battery pack belongs to battery technical field. The busbar protection piece includes second component, and second component includes a plurality of assembly department and connecting portion, and the vertical section of assembly department presents upside down '' several '' character, and the bottom of a plurality of assembly department upside down '' several '' character is connected in series through connecting portion, and the upside down '' several '' character groove of assembly department is connected in series forms busbar bin, the busbar bin is used for containing busbar. The busbar protection piece still includes first component, and first component is installed on the busbar in the busbar bin, is used for the location of busbar in vertical direction. The utility model through the cooperation of busbar bin and first component, not only realizes the protection purpose of busbar, and the movement of busbar in vertical direction is limited, and, the setting of busbar bin can adapt to the demand of different number busbar.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and particularly relates to a bus bar protection part and a battery pack. Background Art

[0002] Power batteries have been widely used in electric vehicles, hybrid vehicles and renewable energy storage systems, mainly for providing power, improving energy efficiency and extending the driving range. With the continuous progress of technology, lithium batteries have become the mainstream, and their charging speed and service life have been significantly improved. At the same time, the market demand for high-performance batteries is increasing day by day, which promotes research and development and innovation. Among them, the battery pack arranges modules such as BDU (fully called Battery Disconnect Unit, battery cut-off unit), BMS (fully called Battery Management System, battery management system), and battery cells. The current collection and distribution of these modules are mainly borne by the return bus bar. At the same time, the setting of the bus bar also plays a role in improving the efficiency of the battery system, maintaining the stability of the battery and optimizing the space layout. Therefore, the arrangement and protection of the bus bar are particularly important for the performance and safety of the battery pack.

[0003] In the existing battery packs considered, due to the size requirements of the battery modules, the number of return bus bars may be more or less. For the protection of the bus bar, it is mainly to protect the bus bar in a flexible fitting and fixing manner to adapt to the change in the number of bus bars. This protection method has the following problems: the stacking of the battery pack is complicated and disorderly, and the space utilization efficiency of the whole pack is relatively low; the fitting parts used for fitting and fixing are unstable, and during the shaking of the battery pack, it is easy to scratch the bus bar, resulting in a decrease in the conductivity of the bus bar. Summary of the Utility Model

[0004] In view of the above problems, the present utility model provides a bus bar protection part and a battery pack.

[0005] The first object of the present utility model is achieved by the following technical solutions:

[0006] A bus bar protection part includes a second component;

[0007] The second component includes a plurality of assembly parts and a connecting part. The vertical cross-section of the assembly part is an inverted "U" shape. The bottoms of the inverted "U" shapes of the plurality of assembly parts are connected in series by the connecting part, and the inverted "U" shaped grooves of the connected assembly parts form a bus bar bin;

[0008] The bus bar bin is used to accommodate the bus bar.

[0009] Further, the bus bar protection part further includes a component;

[0010] The first component is installed on the busbar in the busbar bin and is used for limiting the busbar in the vertical direction;

[0011] Further, limiting blocks are provided on both sides of the connecting portion, and the limiting blocks are used for limiting the rotation of the busbar on the horizontal plane.

[0012] Further, the vertical cross-section of the first component is in an inverted "U" shape;

[0013] The first component is arranged in the busbar bin, and the bottom of the inverted "U" shape of the first component is arranged on the busbar;

[0014] The top edge of the inverted "U" shape of the first component is fixedly connected to the top edge of the inverted "U" shape of the second component.

[0015] Further, a first buffer member is provided between the bottom of the inverted "U" shape of the first component and the busbar.

[0016] Further, a plurality of reinforcing ribs are provided along the length direction on the side wall of the groove of the inverted "U" shape of the first component.

[0017] Further, the bottom of the inverted "U" shape of the first component is designed with rounded corners;

[0018] The corners of the reinforcing ribs are designed with rounded corners.

[0019] Further, the straight lines where the two top edges of the inverted "U" shape of the first component are located form a first angle with the horizontal plane;

[0020] The straight lines where the two top edges of the inverted "U" shape of the second component are located form a second angle with the horizontal plane;

[0021] The first angle and the second angle are the same and are both 1° to 30°.

[0022] Further, a second buffer member is provided at the bottom of the busbar bin;

[0023] The second buffer member covers the bottom wall and the side wall of the busbar bin.

[0024] Further, fixing holes are provided on the connecting portion, and the fixing holes are matched with screws;

[0025] A nut cavity is formed between the connecting portion and the busbar placed in the busbar bin, and the nut cavity is used for accommodating a nut;

[0026] The limiting blocks are fixed on the end plate of the battery pack.

[0027] The second object of the present utility model is achieved by the following technical solutions:

[0028] A battery pack includes a busbar and at least one set of the busbar protection components described above;

[0029] The busbar is located within the busbar compartment of the busbar protective component.

[0030] Furthermore, when there are multiple busbars, the multiple busbars are stacked in the busbar compartment.

[0031] The present invention relates to a busbar protection component and a battery pack. The busbar compartment is formed by the assembly parts connected in series in the second component. The busbar compartment is used to accommodate the busbar and achieves the purpose of protecting the busbar.

[0032] Moreover, through the cooperation between the manifold compartment and the first component, the present invention not only achieves the purpose of protecting the manifold and limits the movement of the manifold in the vertical direction, but also the configuration of the manifold compartment (whose size can be flexibly set) can meet the needs of different numbers of manifolds.

[0033] Moreover, by setting the limit block, the rotation limit of the busbar on the horizontal plane is realized, thereby realizing the all-round limit of the busbar, preventing damage caused by collision with other components in the battery pack during the movement, and further improving the safety of the busbar.

[0034] The battery pack provided by the present invention uses multiple busbars stacked in the above-mentioned busbar protection component, which improves the overall space utilization efficiency of the pack;

[0035] Furthermore, the use of a busbar running through the battery pack prevents the cells from being misaligned, ensuring that the center of gravity of the battery pack coincides with its geometric center as much as possible, thus improving the design quality.

[0036] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 One of the structural schematic diagrams of a busbar protection component according to an embodiment of the present utility model is shown;

[0039] Figure 2 One of the structural schematic diagrams of a busbar protection component according to an embodiment of the present utility model is shown;

[0040] Figure 3 A schematic diagram of the structure of the first component according to an embodiment of the present invention is shown;

[0041] Figure 4 A schematic diagram of the structure of the second component according to an embodiment of the present invention is shown;

[0042] Figure 5 A cross-sectional view of the assembly of the busbar protection component according to an embodiment of the present invention is shown;

[0043] Figure 6 One of the schematic diagrams of a battery pack according to an embodiment of the present invention is shown;

[0044] In the figure: 100, first component; 110, reinforcing rib; 120, first buffer component; 200, second component; 210, assembly part; 220, second buffer component; 230, connecting part; 240, limiting block; 250, nut cavity; 301, third buffer component; 302, first busbar; 303, second busbar. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0046] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements 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 of this utility model.

[0047] like Figure 1 As shown, a busbar protective component according to the present invention includes a second component 200;

[0048] like Figure 4As shown, the second component 200 includes several assembly parts 210 and a connecting part 230. The vertical cross-section of the assembly part 210 is an inverted "U" shape. The bottoms of the inverted "U" shapes of several assembly parts 210 are connected in series by the connecting part 230. The inverted "U" shaped grooves of the connected assembly parts 210 form a bus bar bin, which is used to accommodate the bus bar, thereby achieving the protection of the bus bar.

[0049] As Figure 5 shown, in some embodiments of the present invention, the bus bar protection part further includes a component 100, and the first component 100 is installed on the bus bar in the bus bar bin for limiting the position of the bus bar in the vertical direction;

[0050] In the present invention, through the mutual cooperation of the bus bar bin and the first component 100, not only the purpose of protecting the bus bar is achieved, and the movement of the bus bar in the vertical direction is limited, but also the setting of the bus bar bin (the size of the bus bar bin is determined by the inverted "U" shaped groove of the vertical cross-section of the assembly part 210 and the installation position of the first component 100) can meet the requirements of different numbers of bus bars.

[0051] In some embodiments of the present invention, limiting blocks 240 are provided on both sides of the connecting part 230, and the limiting blocks 240 are used for limiting the rotation of the bus bar on the horizontal plane;

[0052] Through the setting of the limiting blocks 240, the rotation of the bus bar on the horizontal plane is limited, and thus the all-round limitation of the bus bar is achieved, preventing damage caused by the collision of the bus bar with other components in the battery pack during the movement process, and further improving the safety of the bus bar.

[0053] In the present invention, the structural diagram after the assembly of the first component 100 and the second component 200 is as Figure 2 shown.

[0054] As Figure 3 shown, in some embodiments of the present invention, the vertical cross-section of the first component 100 is an inverted "U" shape;

[0055] The first component 100 is arranged in the bus bar bin, and the bottom of the inverted "U" shape of the first component 100 is arranged on the bus bar;

[0056] The top edge of the inverted "U" shape of the first component 100 is fixedly connected to the top edge of the inverted "U" shape of the second component 200;

[0057] In this embodiment, the inverted "U" - shaped bottom of the first component 100 is disposed on the bus bar, and the top edge of the inverted "U" - shaped of the first component 100 is fixedly connected to the top edge of the inverted "U" - shaped of the second component 200, so that the return bus bar is fixed in the bus bar bin, and further realizes the movement of the bus bar in the vertical direction, maintaining the stability of the bus bar in the vertical direction.

[0058] For example, as Figure 1 shown, first mounting holes are provided on both top edges of the inverted "U" - shaped of the first component 100, second mounting holes are provided on both top edges of the inverted "U" - shaped of the second component 200, and nuts are provided at the ends of both top edges of the inverted "U" - shaped of the second component 200. The nuts are fixedly welded to the top edge of the inverted "U" - shaped of the second component 200, and the nuts face away from the first component 100. Bolts are passed through the first mounting holes and the second mounting holes and fixed by the nuts, so that the top edge of the inverted "U" - shaped of the first component 100 is fixedly connected to the top edge of the inverted "U" - shaped of the second component 200 by bolts.

[0059] In some embodiments of the present utility model, the first component 100 is a flat component. By fixing the top edges of the "U" - shaped of the first component 100 and the second component 200, it can also play a role in fixing the bus bar in the bus bar bin;

[0060] A buffer foam can be provided between the first component 100 and the bus bar to protect the bus bar and further limit the stability of the bus bar in the vertical direction.

[0061] In some embodiments of the present utility model, a first buffer member 120 is provided between the inverted "U" - shaped bottom of the first component 100 and the bus bar;

[0062] In this embodiment, through the setting of the first buffer member 120, the damage to the surface of the bus bar by the inverted "U" - shaped bottom of the first component 100 is reduced, the bus bar is prevented from being scratched, and the bus bar is protected.

[0063] In some embodiments of the present utility model, the first buffer member 120 is adhesively bonded to the inverted "U" - shaped bottom of the first component 100 by back glue.

[0064] In some embodiments of the present utility model, for example, the first buffer member 120 is made of foam.

[0065] In some embodiments of the present utility model, a plurality of reinforcing ribs 110 are provided along the length direction on the side walls of the inverted "r-shaped" groove of the first component 100 to ensure the structural strength of the first component 100, and further ensure the stability of the fixing effect of the first component 100 on the bus bar.

[0066] In some embodiments of the present utility model, the bottom of the inverted "r-shaped" of the first component 100 is designed with rounded corners;

[0067] The corners of the reinforcing ribs 110 are designed with rounded corners;

[0068] The above-mentioned rounded corner design facilitates metal flow in the stamping process and prevents stamping rupture;

[0069] Exemplarily, the rounded corner design is an over-rounded corner and / or an equal-chord rounded corner.

[0070] In some embodiments of the present utility model, the straight lines where the two top edges of the inverted "r-shaped" of the first component 100 are located form a first angle with the horizontal plane, and the straight lines where the two top edges of the inverted "r-shaped" of the second component 200 are located form a second angle with the horizontal plane, and the first angle and the second angle are the same;

[0071] In this embodiment, the setting of the first angle and the second angle facilitates the assembly of the first component 100 and the second component 200 and plays an assembly guiding role;

[0072] The same first angle and second angle facilitate the more stable assembly of the first component 100 and the second component 200;

[0073] Exemplarily, the first angle and the second angle are 1° to 30°.

[0074] In some embodiments of the present utility model, a second buffer 220 is provided at the bottom of the bus bar bin;

[0075] The second buffer 220 covers the bottom wall and the side wall of the bus bar bin;

[0076] The setting of the second buffer 220 buffers the damage to the bus bar by the bottom of the inverted "r-shaped" of the second component 200, avoids scratching the bus bar, and protects the bus bar.

[0077] In some embodiments of the present utility model, the second buffer 220 is adhesively bonded to the bottom of the inverted "r-shaped" of the second component 200 by back glue.

[0078] In some embodiments of the present utility model, exemplarily, the second buffer 220 is made of foam.

[0079] Such as Figure 4As shown, in some embodiments of this utility model, the connecting part 230 is provided with a fixing hole, which is matched with a screw;

[0080] The connecting part 230 forms a nut cavity 250 with the manifold placed in the manifold compartment. The nut cavity 250 is used to accommodate a nut (see details). Figure 5 );

[0081] In this embodiment, the nut cavity 250 is designed to ensure that the gap between the screw and the manifold is ≥1mm, thereby preventing the screw head from contacting the return bus and preventing the manifold from being scratched.

[0082] In some embodiments of this utility model, for example, the screw is a pull rod screw to match the distance between the connecting part 230 and the outer shell of the battery pack.

[0083] In some embodiments of this utility model, the limiting block 240 is fixed to the end plate of the battery pack. Specifically, the end plate of the battery pack is provided with a limiting hole that matches the limiting block 240. During installation, the limiting block 240 cooperates with the limiting hole to realize the movement of the second component 200 on the horizontal plane, thereby realizing the rotation limitation of the busbar on the horizontal plane.

[0084] In addition, the limiting block 240 is designed to prevent mistaken assembly.

[0085] like Figure 6 As shown, a battery pack according to certain embodiments of the present invention includes a busbar and at least one set of busbar protection components as described in the above embodiments;

[0086] The busbar is installed inside the busbar compartment in the busbar protective component;

[0087] In this embodiment, for example, the number of busbar protection components is two sets.

[0088] In some embodiments of this utility model, when there are multiple busbars, the multiple busbars are stacked in the busbar compartment;

[0089] To further prevent damage to the busbars, a third buffer 301 is provided between two adjacent busbars;

[0090] The stacking of multiple busbars saves space in the vertical direction of the battery pack.

[0091] like Figure 6As shown, for example, there are two return busbars (first busbar 302 and second busbar 303). The two busbars are stacked in the busbar compartment, and a third buffer 301 is provided between the two busbars to avoid scratching between the two busbars.

[0092] In some embodiments of this utility model, for example, the third buffer 301 is made of foam.

[0093] like Figure 6 As shown, in some embodiments of this utility model, for example, the busbar stacked in the busbar compartment penetrates the battery pack;

[0094] This configuration allows the busbar to pass through the middle of the battery pack, preventing the cells from being misaligned and ensuring that the center of gravity of the battery pack coincides with the geometric center of the battery pack as much as possible, thus improving the design quality.

[0095] like Figure 6 As shown, in this embodiment, the battery also includes battery modules (containing battery cells) disposed on both sides of the busbar, a BMS disposed on one side of the battery module, and a BDU disposed on the other side of the battery module.

[0096] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0097] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A busbar protective component, characterized in that, Comprising a second component (200); The second component (200) includes a plurality of assembling parts (210) and a connecting part (230). The vertical cross-section of the assembling part (210) is an inverted "U" shape. The bottoms of the inverted "U" shapes of the plurality of assembling parts (210) are connected in series by the connecting part (230). The inverted "U" shaped grooves of the assembled assembling parts (210) form a busbar chamber; The busbar chamber is used to accommodate the busbar.

2. A busbar protective component according to claim 1, characterized in that, It also includes a first component (100); The first component (100) is installed on the busbar in the busbar chamber and is used for limiting the position of the busbar in the vertical direction.

3. A busbar protective component according to claim 2, characterized in that, The vertical cross-section of the first component (100) is an inverted "U" shape; The first component (100) is arranged in the busbar chamber, and the bottom of the inverted "U" shape of the first component (100) is arranged on the busbar; The top edge of the inverted "U" shape of the first component (100) is fixedly connected to the top edge of the inverted "U" shape of the second component (200).

4. A busbar protective component according to claim 3, characterized in that, A first buffer (120) is provided between the bottom of the inverted "U" shape of the first component (100) and the busbar.

5. A busbar protective component according to claim 3, characterized in that, The straight line where the two top edges of the inverted "U" shape of the first component (100) are located forms a first angle with the horizontal plane; The straight line where the two top edges of the "U" shape of the second component (200) are located forms a second angle with the horizontal plane; The first angle and the second angle are the same and are both 1° to 30°.

6. A busbar protective component according to claim 1, characterized in that, Limit blocks (240) are provided on both sides of the connecting part (230), and the limit blocks (240) are used for limiting the rotation of the busbar on the horizontal plane.

7. A busbar protective component according to claim 6, characterized in that, Fixing holes are provided on the connecting part (230), and the fixing holes are matched with screws; A nut cavity (250) is formed between the connecting part (230) and the busbar placed in the busbar chamber, and the nut cavity (250) is used to accommodate the nut; The limit blocks (240) are fixed to the end plate of the battery pack.

8. A busbar protective component according to claim 1, characterized in that, A second buffer (220) is provided at the bottom of the busbar chamber; The second buffer (220) covers the bottom wall and the side wall of the busbar chamber.

9. A battery pack, characterized in that, Comprising a busbar and at least one busbar protection member according to any one of claims 1-8; The busbar is arranged in the busbar chamber in the busbar protection member.

10. A battery pack according to claim 9, characterized in that, When there are multiple busbars, the multiple busbars are stacked in the busbar chamber.

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