A frame member for a busbar
By designing a busbar frame component and using an aluminum busbar and nickel sheet connection method, the problem of uneven temperature inside the electric vehicle power battery pack was solved, achieving uniform temperature distribution and consistent current path, thus improving the safety and efficiency of battery use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AMPHENOL CHANGZHOU ELECTRONICS
- Filing Date
- 2025-04-25
- Publication Date
- 2026-06-12
AI Technical Summary
Uneven temperature distribution inside the power battery pack of an electric vehicle can cause some areas to be too hot or too cold.
Design a busbar frame component, including a plastic battery holder and an aluminum busbar, which are connected to the aluminum busbar by laser welding with nickel sheets. Combined with a hollow structure and a cut aluminum busbar design, a consistent current path and uniform resistance and temperature distribution are achieved.
This achieves a uniform temperature distribution inside the battery pack, avoiding localized overheating or overcooling issues and improving battery safety and efficiency.
Smart Images

Figure CN224355405U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a frame component, and more particularly to a busbar frame component. Background Technology
[0002] One of the challenges in managing the temperature of electric vehicle power batteries is the uneven temperature distribution within the battery pack. Some areas are hot, while others are cold. Utility Model Content
[0003] The present invention aims to solve the above-mentioned defects and provide a busbar frame component.
[0004] To overcome the deficiencies in the prior art, the technical solution adopted by this utility model to solve its technical problem is as follows: the frame component of this busbar includes a battery holder made of plastic, a left side plate connected to the left side of the battery holder, a right side plate connected to the right side, an aluminum busbar serving as a battery connection channel connected to the upper end of the battery holder, a left temperature acquisition FPC connected to the upper part of the left side plate, a right temperature acquisition FPC connected to the upper part of the right side plate, and a voltage acquisition FPC connected to the front end face of the battery holder. The left and right temperature acquisition FPCs are L-shaped, and the voltage acquisition FPC is connected to the aluminum busbar through a nickel sheet.
[0005] According to another embodiment of the present invention, the aluminum busbar is further attached to the top of the battery mounting bracket by adhesive.
[0006] According to another embodiment of the present invention, the nickel sheet and the aluminum busbar are laser-welded to achieve voltage signal acquisition.
[0007] According to another embodiment of the present invention, the battery holder is further provided with a hollow structure, the front half of which and the rear half of which respectively form a busbar input section and a busbar output section.
[0008] According to another embodiment of the present invention, the left side plate and the right side plate each include a symmetrically cut aluminum plate, an L-shaped aluminum plate and an insulating sheet. The aluminum plate is provided with symmetrical hollow strips. The L-shaped aluminum plate is laser-welded to the side of the battery holder. The insulating sheet is welded to the L-shaped aluminum plate. The aluminum plate and the L-shaped aluminum plate are connected, and the insulating sheet is located between the aluminum plate and the L-shaped aluminum plate.
[0009] According to another embodiment of the present invention, the number of nickel sheets is the same as the number of aluminum bars.
[0010] The beneficial effects of this utility model are: the frame components of this busbar are reasonably distributed, and by cutting the aluminum busbar, the current is guided so that the current paths of different parts are consistent, thereby making the circuit resistance consistent and the temperature rise consistent. Attached Figure Description
[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] Figure 2 This is an exploded view of the structure of this utility model;
[0014] Figure 3 This is a structural schematic diagram of the exploded view of the left side panel;
[0015] Figure 4 This is a schematic diagram of the structure simulating the current flow on the left side panel;
[0016] Figure 5 This is a schematic diagram of the voltage acquisition FPC.
[0017] The components are: 1. Left side plate, 2. Right side plate, 3. Battery mounting bracket, 4. Voltage acquisition FPC, 5. Left side temperature acquisition FPC, 6. Empty slot, 7. Right side temperature acquisition FPC, 8. Aluminum busbar, 9. Nickel sheet, 10. Aluminum plate, 11. L-shaped aluminum plate, 12. Insulating sheet. Detailed Implementation
[0018] 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 in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort in accordance with the embodiments of the basic utility model are within the protection scope of this utility model.
[0019] like Figure 1-5 As shown in the figure, the battery holder 3 is made of plastic. A left side plate 1 is connected to the left side of the battery holder 3, and a right side plate 2 is connected to the right side. An aluminum busbar 8, serving as a battery connection channel, is connected to the upper end of the battery holder 3. A left temperature acquisition FPC 5 is connected above the left side plate 1, and a right temperature acquisition FPC 7 is connected above the right side plate 2. A voltage acquisition FPC 4 is connected to the front end of the battery holder 3. The left and right temperature acquisition FPCs 5 and 7 are L-shaped. The voltage acquisition FPC 4 is connected to the aluminum busbar 8 via a nickel strip 9. The aluminum busbar 8 has a cut structure to guide current. The left and right side plates 1 and 2 ensure that the current paths are exactly the same for both the front and rear sections, thus balancing the temperature of the components during operation.
[0020] The aluminum busbar 8 is glued to the top of the battery holder 3. The aluminum busbar 8 is composed of cut aluminum strips and is connected to the voltage acquisition FPC4. It can guide the current and make the current path of different parts consistent, so that the resistance of the circuit is consistent and the temperature rise is consistent.
[0021] The nickel sheet 9 and the aluminum busbar 8 are laser-welded to achieve voltage signal acquisition. The number of nickel sheets 9 is the same as the number of aluminum busbars 8. One end of the nickel sheet 9 is fixedly connected to the voltage acquisition FPC4, and the other end is welded to the aluminum busbar 8. One nickel sheet 9 is welded to one aluminum busbar 8, as shown below. Figure 5 As shown.
[0022] The battery mounting bracket 3 has a hollow structure, with its front and rear halves forming the bus input and output sections, respectively. The hollow structure effectively dissipates heat from the battery pack. Meanwhile, the aluminum busbars 8 above the battery mounting bracket 3 are evenly distributed. By cutting the aluminum busbars, current is guided, ensuring that the current paths in different parts are consistent, thereby maintaining uniform circuit resistance and temperature rise.
[0023] like Figure 3 As shown, both the left side plate 1 and the right side plate 2 include a symmetrically cut aluminum plate 10, an L-shaped aluminum plate 11, and an insulating sheet 12. The aluminum plate 10 has symmetrical perforated strips. The L-shaped aluminum plate 11 is laser-welded to the side of the battery mounting bracket 3. The insulating sheet 12 is welded to the L-shaped aluminum plate 11. The aluminum plate 10 and the L-shaped aluminum plate 11 are connected, and the insulating sheet 12 is located between the aluminum plate 10 and the L-shaped aluminum plate 11. This structure ensures that the busbar input and output portions formed on the battery mounting bracket 3 flow through the L-shaped aluminum plate 11 to the aluminum plate 10 via identical paths, thus achieving the same current and resistance on the side aluminum busbars of the busbar input and output portions, and maintaining a consistent temperature rise. The specific flow direction is as follows: Figure 4 As shown.
[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A busbar frame component, characterized in that: The battery holder (3) is made of plastic. A left side plate (1) is connected to the left side of the battery holder (3), and a right side plate (2) is connected to the right side. An aluminum busbar (8) serving as a battery connection channel is connected to the upper end of the battery holder (3). A left temperature acquisition FPC (5) is connected to the upper part of the left side plate (1), and a right temperature acquisition FPC (7) is connected to the upper part of the right side plate (2). A voltage acquisition FPC (4) is connected to the front end of the battery holder (3). The left temperature acquisition FPC (5) and the right temperature acquisition FPC (7) are L-shaped. The voltage acquisition FPC (4) is connected to the aluminum busbar (8) through a nickel sheet (9).
2. The busbar frame component as described in claim 1, characterized in that: The aluminum busbar (8) is glued to the top of the battery holder (3).
3. The busbar frame component as described in claim 1, characterized in that: The nickel sheet (9) and the aluminum busbar (8) are laser-welded to achieve voltage signal acquisition.
4. The busbar frame component as described in claim 1, characterized in that: The battery holder (3) has a hollow structure, with its front half and rear half forming a busbar input section and a busbar output section, respectively.
5. A busbar frame component as described in claim 1, characterized in that: The left side plate (1) and the right side plate (2) each include a symmetrically cut aluminum plate (10), an L-shaped aluminum plate (11) and an insulating sheet (12). The aluminum plate (10) has symmetrical hollow strips. The L-shaped aluminum plate (11) is laser-welded to the side of the battery holder (3). The insulating sheet (12) is welded to the L-shaped aluminum plate (11). The aluminum plate (10) is connected to the L-shaped aluminum plate (11), and the insulating sheet (12) is located between the aluminum plate (10) and the L-shaped aluminum plate (11).
6. The busbar frame component as described in claim 1, characterized in that: The number of nickel sheets (9) is the same as the number of aluminum bars (8).