A type of bapi

Abstract

This utility model discloses a battery pack, comprising a first mounting plate, a second mounting plate, and a bend. Welding holes are provided on the first and second mounting plates. These welding holes are not through holes, and the diameter of the circular hole on the near end face is smaller than the diameter on the far end face. An inner cavity is provided inside the welding hole, and the inner wall of the welding hole has an inclination angle of 50° to 70°. A protective flange that mates with the welding hole is provided near the near end face of the welding hole, and the upper end face of the protective flange is slightly higher than the horizontal plane of the first and second mounting plates. Compared with the prior art, the beneficial effect of this utility model is that it provides a countersunk hole molten pool structure at the welding point on the battery pack. During battery assembly welding, this structure can block a certain amount of molten metal splashing, reduce the coverage area of ​​the splashed metal, and provide some containment for the molten metal, reducing the possibility of splashed metal getting stuck between the battery cells and puncturing the insulation.

Description

Technical Field

[0001] This utility model belongs to the field of batteries, specifically relating to a type of battery plate. Background Technology

[0002] Connectors, commonly known as "connector tabs," are crucial conductive components in battery packs. They primarily connect batteries to external circuitry, ensuring current transmission. During connector welding, high temperatures can cause metals such as aluminum, copper, and nickel to melt locally, forming molten metal droplets. When energy input is too high or materials are mismatched, metal splashing can occur, and molten beads can become trapped between batteries, damaging the battery insulation layer and directly or indirectly affecting battery insulation, thus posing certain safety hazards. Utility Model Content

[0003] The purpose of this invention is to provide a barbiturate tablet to solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides a welding plate, including a first mounting plate, a second mounting plate, and a bending element. The first and second mounting plates are provided with welding holes, which are not through holes. The diameter of the circular hole on the near end face of the welding hole is smaller than the diameter of the circular hole on the far end face. An inner cavity is provided inside the welding hole, and the inner wall of the welding hole is provided with an inclination angle.

[0005] In one or more embodiments of this utility model, the inclination angle of the inner wall of the welding hole is 50° to 70°.

[0006] In one or more embodiments of this utility model, a protective flange that mates with the welding hole is provided near the end face of the welding hole, and the upper end face of the protective flange is slightly higher than the horizontal plane of the first mounting plate and the second mounting plate.

[0007] In one or more embodiments of this utility model, a spiral pattern is provided on the inner wall between the upper end face of the protective flange and the near end face of the welding hole.

[0008] In one or more embodiments of this utility model, an energy-absorbing area is provided on both the first mounting plate and the second mounting plate, and the end face of the energy-absorbing area is lower than the horizontal plane of the first mounting plate and the second mounting plate.

[0009] In one or more embodiments of this utility model, a plurality of honeycomb protrusions are provided in the energy absorption area, and the upper surface of the honeycomb protrusions is on the same plane as the horizontal plane of the first mounting plate and the second mounting plate.

[0010] In one or more embodiments of this utility model, gaps are provided between the honeycomb bumps.

[0011] In one or more embodiments of this utility model, the first mounting plate is provided with a pole hole, and the pole hole is provided with a thread.

[0012] In one or more embodiments of this utility model, the depth of the inner cavity of the welding hole is 1 to 1.5 mm.

[0013] In one or more embodiments of this utility model, the first mounting plate is provided with a first mounting hole, and the second mounting plate is provided with a second mounting hole.

[0014] Compared with the prior art, the beneficial effect of this utility model is that a countersunk hole molten pool structure is set at the welding point on the battery sheet, which can block a certain amount of metal molten beads from splashing during the battery assembly welding process, reduce the coverage of the molten beads splashing, and play a certain role in collecting the molten beads, reducing the possibility of the splashed molten beads getting stuck between the battery cells and puncturing the insulation. Attached Figure Description

[0015] Figure 1 This is a first structural diagram of a plaster in one embodiment of the present invention;

[0016] Figure 2 This is a second structural diagram of a plaster in one embodiment of the present invention;

[0017] Figure 3 This is a cross-sectional view of a type of plaster in one embodiment of the present invention;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0019] Explanation of key figure labels:

[0020] 1-First mounting plate, 101-Pole post hole, 102-First mounting hole, 2-Second mounting plate, 201-Second mounting hole, 3-Energy absorption area, 301-Honeycomb bump, 4-Protective flange, 401-Spiral pattern, 5-Welding hole, 6-Bend. Detailed Implementation

[0021] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0022] refer to Figures 1-4As shown, a welding strip is used for series and parallel connection between batteries via laser welding. Currently, in the industrialized lithium battery assembly process, there are unavoidable technological problems in the laser welding step: molten metal beads are generated during the welding process, and these beads splatter everywhere, directly or indirectly affecting the battery insulation and posing certain safety hazards. This invention addresses this by designing a special countersunk hole structure on the welding strip, combined with an installed baffle structure and a multi-column energy-absorbing structure. This design effectively prevents molten metal beads from splattering during battery assembly welding, thereby reducing the probability of these splattered beads getting stuck between the battery cells and puncturing the insulation.

[0023] A battery pack includes a first mounting plate 1, a second mounting plate 2, and a bend 6. The first mounting plate 1 and the second mounting plate 2 are used to connect different electrode materials or external circuits, respectively. The bend 6 is used to block and limit the internal structure of the battery during installation. Welding holes 5 are provided on the first mounting plate 1 and the second mounting plate 2. The welding holes 5 are used to limit and weld the electrode materials, while also preventing molten metal droplets from splashing during welding and collecting the molten droplets. A protective flange 4 is also provided near the end face of the welding hole 5 to further block the molten droplets. An energy-absorbing zone 3 is also provided around the protective flange 4 and the welding hole 5. Through the multi-column energy-absorbing structure, the kinetic energy of the splashed molten droplets is absorbed, their range of motion is limited, rolling and further splashing are reduced, and the droplets are ultimately captured within the gap.

[0024] refer to Figures 1-4 As shown, the first mounting plate 1 has a terminal hole 101 for installing a threaded terminal. The terminal hole 101 has threads and mates with the threaded terminal on the battery. By screwing, the battery electrode is fixed to the battery plate, ensuring the positional accuracy and stability of the battery plate in the battery pack. The first mounting plate 1 has a first mounting hole 101, and the second mounting plate 2 has a second mounting hole 201. Both the first mounting hole 101 and the second mounting hole 201 serve a positioning function to precisely fix the battery plate, ensuring that the positive and negative terminals of adjacent individual cells are accurately aligned with the connecting battery plate, avoiding the impact of positional deviation on the subsequent welding quality.

[0025] refer to Figures 1-4 As shown, welding hole 5 serves as a molten pool. Welding hole 5 is a closed hole with a conical internal structure and an inner cavity. The depth of the inner cavity is 1–1.5 mm. This inner cavity acts as a molten pool, preventing welding spatter and providing a space to collect any trapped molten beads, preventing secondary spattering. During welding, the molten metal preferentially fills the recessed area inside welding hole 5, reducing spatter caused by surface tension imbalance.

[0026] refer to Figures 3-4As shown, the internal structure of welding hole 5 is a conical hole with an inner cavity. The diameter of the circular hole on the near end face of welding hole 5 is smaller than that on the far end face. The inner cavity of welding hole 5 is provided with an inner cavity wall. The inner cavity wall can allow the splashed molten beads to flow back to the bottom of welding hole 5. At the same time, the inner wall of welding hole 5 is provided with an inclination angle, which is 50° to 70°. This can play a good role in blocking molten beads without affecting the welding process. An angle less than 50° will affect the welding process, while an angle greater than 70° will affect the blocking effect on molten beads splashing.

[0027] A protective flange 4 is provided near the end face of the welding hole 5 to further block spatter. The upper end face of the protective flange 4 is slightly higher than the horizontal plane of the first mounting plate 1 and the second mounting plate 2, meaning the welding surface is lower than the upper end face of the protective flange 4. The protective flange 4 is located at the opening of the welding hole 5. When welding the welding hole 5, the portion of the protective flange 4 protruding from the first mounting plate 1 and the second mounting plate 2 further blocks spatter, enhancing the blocking effect in conjunction with the welding hole 5. Simultaneously, a spiral pattern 401 is provided on the inner wall between the upper end face of the protective flange 4 and the near end face of the welding hole 5. The spiral pattern 401 increases the adhesion area of ​​the molten metal, disrupting the flowability of the spatter beads and reducing the spatter kinetic energy. This can both increase welding strength and suppress spatter.

[0028] refer to Figures 1-4 As shown, both the first mounting plate 1 and the second mounting plate 2 are provided with energy-absorbing zones 3. The energy-absorbing zone 3 has a honeycomb-shaped multi-column energy-absorbing structure, used to absorb the kinetic energy of splashed molten beads within its range and further limit their movement to prevent secondary splashing. The end face of the energy-absorbing zone 3 is lower than the horizontal plane of the first mounting plate 1 and the second mounting plate 2, meaning the energy-absorbing zone 3 itself has the function of collecting molten beads while capturing splashed and rolling molten beads. Multiple honeycomb protrusions 301 are provided within the energy-absorbing zone 3. The honeycomb protrusions 301 are distributed in a honeycomb-shaped multi-column pattern within the energy-absorbing zone 3, using this distribution feature to densely block and absorb the splashed molten beads within its range. The upper end face of the honeycomb protrusions 301 is on the same plane as the horizontal plane of the first mounting plate 1 and the second mounting plate 2, meaning it is easy to form by stamping during processing, and its height does not affect the installation and positioning of the plate.

[0029] refer to Figures 1-4 As shown, gaps are provided between the honeycomb protrusions 301. The distribution of the honeycomb protrusions 301 within the energy absorption area 3 serves both to capture and collect the splashed molten beads. After the splashed molten beads enter the multi-column structure, they are slowed down by colliding with the column walls and are eventually captured in the gaps, further reducing the possibility of secondary splashing of the molten beads.

[0030] In practical use, the electrode plate is placed between the electrode material and the external circuit inside the battery. It is fixed in place using the electrode post hole 101, and its position is defined by the first mounting hole 101 on the first mounting plate 1 and the second mounting hole 201 on the second mounting plate 2, which also serves to position the welding area. The welding part is placed inside the welding hole 5, and welding is performed within it. The molten metal beads generated during welding are blocked by the inner wall of the welding hole 5, reducing spatter and allowing the beads to flow along the inner wall and be collected inside the hole. The protective flange 4 at the opening of the welding hole 5 further blocks the spattered beads and breaks the surface tension of the beads, strengthening the weld. The energy-absorbing zone 3 around the welding hole 5 uses a honeycomb column structure to absorb the kinetic energy of the spattered beads and capture them in the internal gaps, preventing secondary spattering. By using the molten pool cone hole, blocking components, and energy-absorbing area set on the welding plate, spatter is blocked and contained, reducing the destructiveness of spatter and protecting welding safety and product qualification rate.

[0031] Compared with the prior art, the beneficial effect of this utility model is that a countersunk hole molten pool structure is set at the welding point on the battery sheet, which can block a certain amount of metal molten beads from splashing during the battery assembly welding process, reduce the coverage of the molten beads splashing, and play a certain role in collecting the molten beads, reducing the possibility of the splashed molten beads getting stuck between the battery cells and puncturing the insulation.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A type of mounting plate, comprising a first mounting plate, a second mounting plate, and a bending element, characterized in that, The first mounting plate and the second mounting plate are provided with welding holes. The welding holes are not through holes. The diameter of the circular hole on the near end face of the welding hole is smaller than the diameter of the circular hole on the far end face. The welding hole has an inner cavity and the inner wall of the welding hole has an inclination angle.

2. The bacon tablet according to claim 1, characterized in that, The inclination angle of the inner wall of the welding hole is 50° to 70°.

3. The barbiturate tablet according to claim 1, characterized in that, A protective flange that mates with the welding hole is provided near the end face of the welding hole, and the upper end face of the protective flange is slightly higher than the horizontal plane of the first mounting plate and the second mounting plate.

4. A type of barbitured tablet according to claim 3, characterized in that, The inner wall between the upper end face of the protective flange and the near end face of the welding hole is provided with spiral patterns.

5. A type of barbitured tablet according to claim 1, characterized in that, Both the first mounting plate and the second mounting plate are provided with energy-absorbing areas, and the end face of the energy-absorbing area is lower than the horizontal plane of the first mounting plate and the second mounting plate.

6. A type of barbitured tablet according to claim 5, characterized in that, The energy absorption zone is provided with multiple honeycomb protrusions, and the upper surface of the honeycomb protrusions is on the same plane as the horizontal plane of the first mounting plate and the second mounting plate.

7. A type of barbitured tablet according to claim 6, characterized in that, The honeycomb bumps are spaced apart.

8. A type of steroid tablet according to claim 1, characterized in that, The first mounting plate is provided with pole hole, and the pole hole is provided with thread.

9. A type of barbitured tablet according to claim 1, characterized in that, The depth of the inner cavity of the welding hole is 1 to 1.5 mm.

10. A type of barbitured tablet according to claim 1, characterized in that, The first mounting plate is provided with a first mounting hole, and the second mounting plate is provided with a second mounting hole.

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