High-rate overcurrent row and battery module

Abstract

The utility model discloses a high-magnification overcurrent row and a battery module. The battery module comprises a mounting frame, the mounting frame comprises two side plates and two end plates, and a mounting space is defined by the two side plates and the two end plates; the plurality of battery cells are uniformly arranged in the mounting space; and the high-magnification overcurrent row is connected with the plurality of battery cells in a welding manner. The high-magnification overflowing row comprises an integrated component, wherein the integrated component comprises a main body part and a connecting part; the connecting part is located at the end of the integrated component; the connecting part is narrower than the main body part; the metal sheets are stacked on the connecting part, and the connecting part and the metal sheets are made of different materials. As the width of the connecting part is smaller than that of the main body part, the cross section of the connecting part can be increased by stacking the metal sheets at the connecting part, so that the requirement of high-magnification overcurrent is met.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to high-rate busbars and battery modules. Background Technology

[0002] Multi-parallel battery module technology refers to connecting multiple individual battery cells together in parallel to form a battery module, thereby increasing the output power and energy capacity of the battery pack. This technology has wide applications in power and energy storage systems.

[0003] Currently, battery busbars are made of a single material. Since the design of busbars needs to take into account the current carrying capacity, when a material with strong current carrying capacity is used, the thickness of the busbar increases only slightly but the cost is higher; when a material with average current carrying capacity is used, the cross-sectional area of ​​the busbar is larger, resulting in a larger width and / or thickness of the busbar.

[0004] Furthermore, the busbar at one end needs to be connected to components such as the battery module's connection interface. Due to the size limitation of the connection interface, the size of the connection between the busbar and the connection interface will be reduced, which greatly reduces the busbar's current carrying capacity and is not conducive to achieving high-rate current carrying. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a high-rate busbar and battery module to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0006] The solution to the technical problem of this utility model is:

[0007] High-rate flow channels include:

[0008] An integral component, comprising a main body and a connecting portion; the connecting portion is located at an end of the integral component; the width of the connecting portion is smaller than the width of the main body.

[0009] Several metal sheets are stacked on the connecting portion, and the connecting portion and the metal sheets are made of different materials.

[0010] As a further improvement to the above technical solution, the number of metal sheets is two.

[0011] As a further improvement to the above technical solution, the two metal sheets are nickel sheets and copper sheets, respectively.

[0012] As a further improvement to the above technical solution, the nickel sheet is disposed on the side of the copper sheet away from the connecting portion.

[0013] As a further improvement to the above technical solution, the main body is provided with multiple countersunk holes.

[0014] As a further improvement to the above technical solution, the countersunk hole is a round hole.

[0015] As a further improvement to the above technical solution, the main body is provided with multiple bending sections.

[0016] As a further improvement to the above technical solution, the main body is provided with multiple positioning holes.

[0017] Battery module, including:

[0018] The mounting frame includes two side plates and two end plates, and the two side plates and two end plates are arranged to form an installation space;

[0019] Multiple battery cells are evenly arranged within the installation space;

[0020] The high-rate busbar as described in any of the above claims is welded to a plurality of the battery cells.

[0021] As a further improvement to the above technical solution, the side plate is made of iron.

[0022] The beneficial effects of this utility model are: since the width of the connecting part is smaller than that of the main body, by stacking metal sheets at the connecting part, the cross-section at the connecting part can be increased, thereby meeting the requirements of high-rate overcurrent.

[0023] This invention relates to the field of battery technology. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of the high-rate flow channel according to an embodiment of the present invention;

[0027] Figure 3 This is a partial cross-sectional view of the high-rate flow channel according to an embodiment of the present invention;

[0028] Figure 4 yes Figure 3A magnified view of part A in the diagram.

[0029] In the diagram, 100 is the mounting frame; 110 is the end plate; 120 is the side plate; 200 is the battery cell; 300 is the high-rate busbar; 310 is the integrated component; 311 is the connecting part; 312 is the main body; 313 is the positioning hole; 314 is the countersunk hole; 315 is the bending part; and 320 is the metal sheet. Detailed Implementation

[0030] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] Multi-parallel battery module technology refers to connecting multiple individual battery cells together in parallel to form a battery module, thereby increasing the output power and energy capacity of the battery pack. This technology has wide applications in power and energy storage systems.

[0034] Currently, battery busbars are made of a single material. Since the design of busbars needs to take into account the current carrying capacity, when a material with strong current carrying capacity is used, the thickness of the busbar increases only slightly but the cost is higher; when a material with average current carrying capacity is used, the cross-sectional area of ​​the busbar is larger, resulting in a larger width and / or thickness of the busbar.

[0035] Furthermore, the busbar at one end needs to be connected to components such as the battery module's connection interface. Due to the size limitation of the connection interface, the size of the connection between the busbar and the connection interface will be reduced, which greatly reduces the busbar's current carrying capacity and is not conducive to achieving high-rate current carrying.

[0036] This solution was designed to address the technical problem of reduced flow capacity due to the narrow connection width of high-rate busbars.

[0037] Reference Figures 1 to 4 The battery module includes a mounting frame 100, a battery cell 200, and a high-rate busbar 300.

[0038] The mounting frame 100 includes end plates 110 and side plates 120. The number of end plates 110 and side plates 120 is set to two. The two end plates 110 and the two side plates 120 are arranged to form an installation space.

[0039] Specifically, in this embodiment, the side plate 120 is made of iron, which ensures its strength. The side plate 120 and the end plate 110 are used to fasten the module so that the battery module always maintains a certain size.

[0040] The high-rate busbar 300 includes an integral component 310 and a metal sheet 320.

[0041] The integral component 310 includes a connecting portion 311 and a main body portion 312. The connecting portion 311 and the main body portion 312 are integrally formed, and the connecting portion 311 is disposed at one end of the main body portion 312. Specifically, in this embodiment, the integral component 310 is an aluminum component. The width of the connecting portion 311 is smaller than the width of the main body portion 312.

[0042] Specifically, in this embodiment, in order to achieve high-rate overcurrent, it is necessary to ensure that the integrated component 310 has sufficient thickness and width. The thickness and width of the integrated component 310 are designed according to the internal space of the battery module so that the integrated component 310 has a large cross-sectional area to meet the requirements of high-rate overcurrent.

[0043] The integral component 310 has sufficient thickness to give it a certain strength. After the integral component 310 is fixed to multiple battery cells 200 by welding, the high strength of the integral component 310 and the tightness of the welding pull the multiple battery cells 200 together, thereby keeping the whole composed of multiple battery cells 200 in a specific size.

[0044] Specifically, in this embodiment, the main body 312 is provided with a bending portion 315. By providing the bending portion 315, the main body 312 has a certain deformation capability, which can improve the buffering effect of the high-ratio flow bus 300. Thus, when the high-ratio flow bus 300 is subjected to force or vibration, the multiple bending portions 315 provide buffering, thereby effectively improving the problem of cracking in the high-ratio flow bus 300.

[0045] Specifically, in this embodiment, the main body 312 is provided with a plurality of positioning holes 313, which are used to cooperate with the positioning protrusions of other components of the battery module to achieve the positioning limit of the high-rate overcurrent bus 300.

[0046] Specifically, the main body 312 is provided with multiple countersunk holes 314, which are respectively configured to correspond to the terminals of multiple battery cells 200. Since the core of the high-rate current busbar 300 is to increase its thickness to enhance its current carrying capacity, in actual production, the excessive thickness of the high-rate current busbar 300 leads to insufficient welding equipment power, making battery module processing difficult. In this embodiment, countersunk holes 314 are provided in the main body 312 of the high-rate current busbar 300, and welding is performed at the countersunk holes 314 to fix the high-rate current busbar 300 to the terminals of the battery cells 200. This effectively solves the problem of insufficient welding power, eliminating the need for factories to purchase additional high-power welding equipment and reducing factory costs.

[0047] The depth of the countersunk hole 314 can be adjusted according to actual needs to achieve the feasibility of processing.

[0048] Specifically, in order to facilitate the processing of the countersunk hole 314, the countersunk hole 314 is set as a round hole structure. In other embodiments, the countersunk hole 314 can also be set as a square hole structure. Those skilled in the art can select the specific structure of the countersunk hole 314 according to actual needs.

[0049] Specifically, in this embodiment, the number of metal sheets 320 is set to two. In other embodiments, the number of metal sheets 320 can also be set to three or the same. Those skilled in the art can select the number of metal sheets 320 according to actual needs.

[0050] The two metal sheets 320 are made of different materials, and the material of the metal sheets 320 is also different from that of the integral component 310. Specifically, in this embodiment, one metal sheet 320 is a nickel sheet and the other metal sheet 320 is a copper sheet. In other embodiments, the metal sheets 320 can also be made of materials such as silver or gold. Those skilled in the art can select the specific material of the metal sheets 320 according to actual needs, ensuring that the current carrying capacity of the metal sheets 320 is greater than that of the integral component 310. The nickel sheet is disposed on the side of the copper sheet away from the integral component 310.

[0051] Metal sheets 320 are stacked on the connecting portion 311. Since the width of the connecting portion 311 is smaller than that of the main body portion 312, by stacking metal sheets 320 on the connecting portion 311, the cross-section of the connecting portion 311 can be increased to obtain better current carrying capacity. Furthermore, by using metal sheets 320 with larger current carrying capacity, the current carrying capacity of the connecting portion 311 can be greatly improved, thereby meeting the requirements of high-rate current carrying capacity.

[0052] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A high rate flow bypass, characterized by: include: An integral component, comprising a main body and a connecting part; The connecting portion is located at the end of the integral component; the width of the connecting portion is smaller than the width of the main body portion; Several metal sheets are stacked on the connecting portion, and the connecting portion and the metal sheets are made of different materials.

2. The high magnification flow baffle of claim 1, wherein: The number of metal sheets is two.

3. The high magnification flow baffle of claim 2, wherein: The two metal sheets are a nickel sheet and a copper sheet, respectively.

4. The high magnification flow stand of claim 3, wherein: The nickel sheet is disposed on the side of the copper sheet away from the connecting portion.

5. The high magnification flow baffle of claim 1, wherein: The main body is provided with multiple countersunk holes.

6. The high magnification flow baffle of claim 5, wherein: The countersunk hole is a round hole.

7. The high magnification flow baffle of claim 1, wherein: The main body has multiple bends.

8. The high magnification flow baffle of claim 1, wherein: The main body is provided with multiple positioning holes.

9. A battery module, characterized by: include: The mounting frame includes two side plates and two end plates, and the two side plates and two end plates are arranged to form an installation space; Multiple battery cells are evenly arranged within the installation space; The high-rate busbar as described in any one of claims 1-8, wherein the high-rate busbar is welded to a plurality of the battery cells.

10. The battery module of claim 9, wherein: The side plate is made of iron.

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