Busbar structure of battery

Abstract

The application relates to a busbar structure of a battery. The busbar structure of the battery comprises a busbar body, at least one stamping groove is formed in the busbar body, at least one avoiding hole is formed in the groove bottom of the stamping groove, and the avoiding hole extends to the outside of the stamping groove in a first direction and a second direction respectively. The scheme provided by the application can improve the contact area with the battery pole and reduce the stress at the welding position of the battery pole.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery busbar structure. Background Technology

[0002] Cylindrical batteries need to be connected in series and parallel through busbars. Busbars are the bridge for the transmission of electrical energy in the batteries, so they are important components of cylindrical battery packs.

[0003] In related technologies, the contact area between the current busbar and the battery terminal is usually small. When there is a large vibration or impact, there will be a large stress at the weld between the battery terminal and the busbar, which will cause the weld to crack, resulting in poor contact between the battery terminal and the busbar and serious heat generation. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a battery busbar structure that can increase the contact area with the battery terminals while reducing the stress at the welding points with the battery terminals.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] The first aspect of this application provides a battery busbar structure, including: a busbar body, wherein at least one stamping groove is formed on the busbar body, and at least one clearance hole is formed on the bottom of the stamping groove, wherein the two sides of the clearance hole extend out of the stamping groove in a first direction and a second direction, respectively.

[0007] The stamping groove is bowl-shaped.

[0008] The first direction and the second direction are parallel to each other.

[0009] The width direction of the clearance hole is perpendicular to the first direction, and the width range of the clearance hole is 0.5mm to 1.0mm.

[0010] It also includes a power source, which includes a battery and terminals, with the terminals disposed on the battery.

[0011] The power source also includes a bracket, which is disposed on the battery.

[0012] The bracket has several mounting ports.

[0013] At least one clearance hole is provided on the bottom of the stamping groove to form several contact portions on the bottom of the stamping groove, and each contact portion is connected to the pole post.

[0014] The clearance hole has a rectangular cross-sectional structure.

[0015] The central axis of the clearance hole coincides with the central axis of the pole post.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] The stamping groove is formed by stamping, which increases the contact area with the battery terminal. At the same time, relief holes are opened at the bottom of the stamping groove. When the battery is subjected to vibration or impact, the structure of the relief holes can disperse the stress, thereby preventing the part of the stamping groove bottom that is welded to the terminal from cracking and maintaining good contact. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0019] Figure 1 This is a schematic diagram of the battery's current-carrying structure in one embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the busbar body in one embodiment of the present utility model;

[0021] Figure 3 for Figure 2 An enlarged schematic diagram. Detailed Implementation

[0022] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0023] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] Currently, the contact area between the current collector and the battery terminal is usually small. When there is a large vibration or impact, there will be a large stress at the weld between the battery terminal and the current collector, which will cause the weld to crack. This will result in poor contact between the battery terminal and the current collector, leading to severe heat generation.

[0026] To address the aforementioned issues, this application provides a battery busbar structure that can increase the contact area with the battery terminals while reducing stress at the welding points.

[0027] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0028] Please see Figure 1 , Figure 2 and Figure 3 A battery busbar structure includes: a busbar body 100, at least one stamping groove 110 is provided on the busbar body 100, at least one clearance hole 120 is provided on the bottom of the stamping groove 110, and the two sides of the clearance hole 120 extend out of the stamping groove 110 in a first direction and a second direction, respectively.

[0029] It should be noted that the stamping groove 110 is bowl-shaped. During processing, the clearance hole 120 is first machined on the busbar body 100, and then the stamping groove 110 is formed by stamping. Since the clearance hole 120 extends outwards from the stamping groove 110 in the first and second directions respectively, meaning the two sides of the stamping groove 110 extend all the way to the surface of the busbar body 100, it ensures that the material thickness is not stretched during the stamping of the stamping groove 110, thus guaranteeing the current-carrying capacity of the busbar. Furthermore, the clearance hole 120 is formed at the bottom of the stamping groove 110. When the battery is subjected to vibration or impact, the structure of the clearance hole 120 can disperse the stress, thus preventing cracking at the bottom of the stamping groove 110 and the welded portion to the terminal post 220, maintaining good contact.

[0030] Please see Figure 1 In one embodiment, the battery bus structure further includes a power source 200, which includes a battery 210 and terminals 220, with the terminals 220 disposed on the battery 210.

[0031] Preferably, at least one clearance hole 120 is provided on the bottom of the stamping groove 110 to form a plurality of contact portions on the bottom of the stamping groove 110, and each contact portion is connected to the pole post 220.

[0032] It should be noted that the contact portion is the part formed by the partition holes dividing the bottom of the stamping groove 110. Furthermore, the number of partition holes 120 can be two or more, depending on the size of the terminal post 220. The rectangular cross-sectional structure of the partition holes 120 has a width ranging from 0.5mm to 1.0mm to ensure that the contact area with the terminal post 220 is not too small, thus guaranteeing current carrying capacity. In addition, when the battery 210 malfunctions and the pressure relief valve releases pressure, the partition holes 220 facilitate venting and pressure relief, improving the safety of the battery 210.

[0033] Please see Figure 3 In one embodiment, the first direction and the second direction are parallel to each other.

[0034] It should be noted that the clearance hole 120 is a rectangular structure hole, and both the first direction and the second direction are the length direction of the clearance hole 120.

[0035] Please see Figure 1 In one embodiment, the power supply 200 further includes a bracket 230, which is disposed on the battery 210. Specifically, the bracket 230 has a plurality of mounting openings.

[0036] It should be noted that the mounting port is used for assembling battery 210.

[0037] Please see Figure 1 In one embodiment, the central axis of the clearance hole 120 coincides with the central axis of the pole post 220.

[0038] It should be noted that by aligning the central axis of the clearance hole 120 with the central axis of the pole post 220, the contact portion formed by the clearance hole 120 can fully contact the surface of the pole post 220, thereby increasing the contact area.

[0039] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs.

[0040] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A current-carrying structure for a battery, characterized in that, include: The busbar body has at least one stamping groove, and at least one clearance hole is provided on the bottom of the stamping groove. The clearance hole extends out of the stamping groove in a first direction and a second direction, respectively.

2. The current-carrying structure of the battery according to claim 1, characterized in that, The stamping groove is bowl-shaped.

3. The current-carrying structure of the battery according to claim 1 or 2, characterized in that, The first direction and the second direction are parallel to each other.

4. The battery busbar structure according to claim 1, characterized in that, The width direction of the clearance hole is perpendicular to the first direction, and the width range of the clearance hole is 0.5mm to 1.0mm.

5. The battery busbar structure according to claim 1, characterized in that, It also includes a power source, which includes a battery and terminals, with the terminals disposed on the battery.

6. The battery busbar structure according to claim 5, characterized in that, The power source also includes a bracket, which is disposed on the battery.

7. The battery busbar structure according to claim 6, characterized in that, The bracket has several mounting ports.

8. The battery busbar structure according to claim 6, characterized in that, At least one of the clearance holes is provided on the bottom of the stamping groove to form a plurality of contact portions on the bottom of the stamping groove, and each of the contact portions is connected to the pole post.

9. The current-carrying structure of the battery according to claim 1 or 6, characterized in that, The clearance hole has a rectangular cross-sectional structure.

10. The current-carrying structure of the battery according to claim 5 or 6, characterized in that, The central axis of the clearance hole coincides with the central axis of the pole post.

Images