Single battery, battery pack and electric equipment
By designing the inclined lead-out sheet fragments connected to the pole ear in the single cell, the problem of small connection area is solved, and simple connection and enhanced heat dissipation and overcurrent capabilities are achieved.
Patent Information
- Application Number
- CN202421800144.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-07-26
AI Technical Summary
In the prior art, the connection area between the pole ear and the lead-out sheet of the single cell is small, which leads to difficulty in connection.
A single cell is designed, wherein the lead-out sheet of the electrode ear includes a first piece arranged inclinedly, the first piece gradually approaches the pole core in a direction away from the first ear segment, and is connected in a fit and connected with the second ear segment to increase the connection area.
It improves the simplicity of connection between the pole ear and the lead-out plate, and enhances the heat dissipation and overcurrent capabilities at the connection.
Smart Images
Figure CN223193957U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of battery technology, and in particular to a single cell, a battery pack, and an electrical device. Background Art
[0002] In the related art, the pole core of a single battery is connected to a tab, which is connected to a pole post on a cover plate via a lead-out tab. Currently, the connection area between the lead-out tab and the tab is small, making the connection between the two difficult. Utility Model Content
[0003] The present disclosure aims to provide a single cell battery in which the connection area between the lead-out tab and the tab is large, thereby making the connection between the two easier.
[0004] In order to achieve the above-mentioned objectives, the present disclosure provides a single cell battery, comprising a pole core, a pole tab and a lead-out piece, wherein the pole tab comprises a first ear segment connected to the pole core, and a second ear segment connected to the first ear segment, and the lead-out piece comprises a first segment arranged at an angle, wherein the first segment gradually approaches the pole core in a direction away from the first ear segment, and the second ear segment is snugly connected to the first segment.
[0005] Optionally, the pole core has an end face, the first ear segment extends out of the pole core through the end face and extends along a first direction perpendicular to the end face, the first segment extends obliquely along a second direction, and the angle between the first segment extending along the second direction and the first ear segment extending along the second direction is at least 15°.
[0006] Optionally, an included angle between the first segment extending along the second direction and the first ear segment extending along the first direction is 20°.
[0007] Optionally, the first segment is arranged between the pole core and the pole lug.
[0008] Optionally, a baffle is provided at one end of the first segment away from the first ear segment, and the baffle is provided on a side of the first segment away from the pole core.
[0009] Optionally, the lead-out piece includes a second piece connected to the first piece, and the second piece is arranged between the pole core and the pole lug and supported on the pole core.
[0010] Optionally, the second piece abuts against the first ear segment.
[0011] Optionally, the second piece is arranged parallel to the first ear segment, and the second piece is in contact with the first ear segment.
[0012] Optionally, the lead-out piece includes a third segment, the single battery includes a cover plate and a pole, the third segment is connected between the pole and the second segment, and the pole is provided on the cover plate.
[0013] Optionally, the single battery includes a cover plate and a cap, the cover plate is provided with an opening groove, the cap is arranged at the opening groove and forms a receiving cavity with the cover plate.
[0014] The second ear segment and the first segment at least partially extend into the accommodating cavity through the opening slot, and the first ear segment partially extends into the accommodating cavity through the opening slot.
[0015] According to a second aspect of the present disclosure, a battery pack is provided, comprising the single battery as described above.
[0016] According to a third aspect of the present disclosure, there is provided an electrical device comprising the battery pack as described above.
[0017] Through the above technical solution, in the single cell provided by the present disclosure, since the first segment is arranged at an angle and gradually approaches the pole core in a direction away from the first ear segment, the arrangement space between the first ear segment and the pole core is utilized to arrange the first segment. As a result, the length of the first segment along its own inclination direction is longer, and the area of the surface extending along its own inclination direction is larger. In this way, when the pole tab is connected to the lead-out tab, the second ear segment can be bent to be arranged parallel to the first segment, and the second ear segment can be connected to the first segment in a snug manner. In this way, the connection area between the lead-out tab and the pole tab can be increased, that is, the connection area between the lead-out tab and the pole tab is larger, making the connection between the two easier. For example, when the lead-out tab and the pole tab are welded, the larger connection area can facilitate the welding of the two. In addition, the larger connection area is also conducive to heat dissipation at the connection between the two. In addition, the larger connection area can also increase the flow capacity of the connection between the two.
[0018] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:
[0020] Figure 1 is a schematic diagram of an explosion of a single battery provided according to an embodiment of the present disclosure;
[0021] Figure 2 is a partial structural diagram of a single cell provided according to an embodiment of the present disclosure;
[0022] Figure 3 is a schematic structural diagram of a lead-out sheet in a single cell provided according to an embodiment of the present disclosure;
[0023] Figure 4 4 is a schematic cross-sectional view of a partial structure of a single cell provided according to an embodiment of the present disclosure.
[0024] Description of Reference Numerals
[0025] 1-pole core, 11-end face, 2-pole ear, 21-first ear segment, 22-second ear segment, 3-lead-out piece, 31-first segment, 32-baffle, 33-second segment, 34-third segment, 4-cover plate, 41-opening slot, 5-cap, 6-pole, 7-shell, 100-accommodation cavity, 200-welding area. DETAILED DESCRIPTION
[0026] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.
[0027] In this disclosure, unless otherwise indicated, directional terms such as "inner" and "outer" refer to the inner and outer parts of the respective components. The terms "first" and "second" are used to distinguish one element from another and do not imply order or importance. Furthermore, in the following description, when referring to the accompanying drawings, identical reference numerals in different drawings denote identical or similar elements, which will not be repeated in this disclosure.
[0028] According to some embodiments of the present disclosure, a single battery is provided, referring to Figures 1 to 4 As shown in the figure, the single battery includes a pole core 1, a pole tab 2 and a lead-out piece 3. The pole tab 2 includes a first ear segment 21 connected to the pole core 1, and a second ear segment 22 connected to the first ear segment 21. The lead-out piece 3 includes a first segment 31 that is arranged obliquely. The first segment 31 gradually approaches the pole core 1 in a direction away from the first ear segment 21, and the second ear segment 22 is snugly connected to the first segment 31.
[0029] Through the above technical solution, in the single cell provided by the present disclosure, since the first segment 31 is arranged at an angle and gradually approaches the electrode core 1 in a direction away from the first ear segment 21, the arrangement space between the first ear segment 21 and the electrode core 1 is utilized to arrange the first segment 31. As a result, the length of the first segment 31 along its own inclination direction is longer, and the area of the surface extending along its own inclination direction is larger. In this way, when the electrode tab 2 is connected to the lead tab 3, the second ear segment 22 can be bent to be arranged parallel to the first segment 31, and the second ear segment 22 can be connected to the first segment 31 in a snug manner. This method can increase the connection area between the lead tab 3 and the electrode tab 2, that is, the connection area between the lead tab 3 and the electrode tab 2 is larger, making the connection between the two easier. For example, when the lead tab 3 and the electrode tab 2 are welded, the larger connection area can facilitate the welding of the two. In addition, the larger connection area is also conducive to heat dissipation at the connection between the two. In addition, the larger connection area can also increase the flow capacity of the connection between the two.
[0030] In some embodiments of the present disclosure, reference Figure 2 and Figure 4 As shown in FIG, the second ear segment 22 may have a welding area 200, and the second ear segment 22 is welded to the first piece 31 in the welding area 200, which is not limited in the present disclosure.
[0031] In some embodiments of the present disclosure, reference Figure 4 As shown in FIG, the pole core 1 has an end surface 11. The first ear segment 21 can extend out of the pole core 1 through the end surface 11 and extend in a first direction perpendicular to the end surface 11. The first segment 31 extends obliquely in a second direction. The angle between the first segment 31 extending in the second direction and the first segment 21 extending in the first direction can be at least 15°. Here, because the first segment 21 extends in the first direction perpendicular to the end surface 11, and the first segment 31 gradually approaches the pole core 1 in a direction away from the first segment 21, the angle between the first segment 21 extending in the first direction and the first segment 31 extending in the second direction is an acute angle. Thus, by setting the angle between the first segment 31 and the first segment 21 to at least 15°, the angle between the first segment 31 and the first segment 21 can be prevented from being too small. In other words, the angle between the first segment 21 and the second segment 22 can be prevented from being too small, thereby preventing the first segment 21 and the second segment 22 from breaking at the bend. Here, in some embodiments, the angle between the first segment 31 extending along the second direction and the first ear segment 21 extending along the first direction may be 20°, 25°, 30°, etc., and the present disclosure does not impose too many restrictions on this.
[0032] In some embodiments, reference Figure 1 and Figure 4 As shown in , the first direction perpendicular to the end surface 11 may be the length direction of the single battery, which is not limited in the present disclosure.
[0033] In some embodiments of the present disclosure, reference Figure 2 and Figure 4 As shown in , the first segment 31 can be arranged between the pole core 1 and the tab 2. In this way, the arrangement space between the tab 2 and the pole core 1 can be used to arrange the first segment 31, thereby shortening the distance between the cover plate 4 and the pole core 1, thereby facilitating an increase in the energy density of the single cell. In this embodiment, the first segment 31 is closer to the pole core 1 than the second tab segment 22. Moreover, this arrangement means that the first segment 31 does not occupy additional space outside the tab 2 in the direction perpendicular to the end face 11. Of course, in other embodiments of the present disclosure, the tab 2 can also be arranged between the first segment 31 and the pole core 1. In this embodiment, the second tab segment 22 is closer to the pole core 1 than the first segment 31.
[0034] In some embodiments of the present disclosure, reference Figures 2 to 4 As shown in FIG, a baffle 32 may be provided at one end of the first segment 31 away from the first ear segment 21. The baffle 32 is provided on the side of the first segment 31 away from the electrode core 1. Thus, the baffle 32 prevents the second ear segment 22 from extending out of the first segment 31 along the tilted direction of the first segment 31, thereby preventing the second ear segment 22 from accidentally contacting components such as the battery housing 7 and the cover plate 4.
[0035] In some embodiments of the present disclosure, reference Figures 2 to 4 As shown in , the lead-out tab 3 may include a second tab 33 connected to the first tab 31. The second tab 33 may be disposed between the electrode core 1 and the tab 2 and supported on the electrode core 1. Similarly, the space between the tab 2 and the electrode core 1 may be utilized to accommodate the second tab 33. This facilitates shortening the distance between the cover plate 4 and the electrode core 1, thereby improving the energy density of the single battery cell. Furthermore, the second tab 33 supports the first tab 31 and the second tab segment 22, thereby enhancing the stability of the lead-out tab 3 after connection to the tab 2.
[0036] In some embodiments, reference Figure 4 As shown in , the second segment 33 can abut against the first ear segment 21. In this way, the second segment 33 can support the first ear segment 21 in a direction perpendicular to the first ear segment 21, thereby facilitating the improvement of the stability of the lead-out piece 3 after being connected to the tab 2.
[0037] In some embodiments, reference Figure 4As shown in , the second piece 33 can be arranged parallel to the first ear segment 21, and the second piece 33 can be in contact with the first ear segment 21. This can increase the contact area between the second piece 33 and the first ear segment 21, thereby improving the support effect of the second piece 33 on the first ear segment 21. Here, the angle between the first piece 31 and the second piece 33 is equal to the angle between the first ear segment 21 and the second ear segment 22, that is, the first piece 31 is parallel to the second ear segment 22, and the second piece 33 is parallel to the first ear segment 21.
[0038] In some embodiments of the present disclosure, reference Figures 2 to 4 As shown in , the lead-out piece 3 may include a third segment 34. The single battery includes a cover plate 4 and a pole 6. The third segment 34 is connected between the pole 6 and the second segment 33. The pole 6 is provided on the cover plate 4. The third segment 34 may be parallel to the end face 11 of the pole core 1, which is not limited in the present disclosure.
[0039] In some embodiments of the present disclosure, reference Figure 1 and Figure 4 As shown in , a single cell may include a cover plate 4 and a cap 5. The cover plate 4 is provided with an open slot 41. The cap 5 is positioned over the open slot 41 and, together with the cover plate 4, forms a receiving cavity 100. The second ear segment 22 and the first segment 31 can at least partially extend into the receiving cavity 100 through the open slot 41. Thus, the second ear segment 22 and the first segment 31 can extend into the cover plate 4 through the open slot 41 and partially into the receiving cavity 100. Thus, by providing the receiving cavity 100, the cover plate 4 can be brought closer to the pole core 1, thereby shortening the spacing between the cover plate 4 and the pole core 1 and effectively improving the energy density of the single cell. Accordingly, the first ear segment 21 can also partially extend into the receiving cavity 100 through the open slot 41.
[0040] In some embodiments of the present disclosure, reference Figure 1 and Figure 4 As shown in , the single battery may further include a shell 7 , the pole core 1 is disposed in the shell 7 , and the cover plate 4 is connected to the shell 7 .
[0041] Below, the present disclosure will provide a detailed introduction to the assembly process of a single battery in combination with the above specific embodiments. Figures 1 to 4As shown in , first, the pole core 1 is set in the shell 7, the cover plate 4 is connected to the shell 7, and the lead-out piece 3 is set on the pole core 1. Specifically, the third segment 34 is set on the end face 11 of the pole core 1, and the second segment 33 is set to be parallel to and fit with the first ear segment 21. Then, the pole ear 2 is pulled out of the opening groove 41, and the pole ear 2 is bent so that the second ear segment 22 is parallel to and fits with the first segment 31. Subsequently, the second ear segment 22 is welded to the first segment 31. After that, the cap 5 is covered on the opening groove 41 and the cap 5 is fixed to the cover plate 4. In this way, the assembly of the single cell can be realized.
[0042] According to a second aspect of the present disclosure, a battery pack is provided, comprising the above-mentioned single battery. The battery pack has all the beneficial effects of the above-mentioned single battery, which will not be described in detail in this disclosure.
[0043] According to a third aspect of the present disclosure, an electrical device is provided, comprising the battery pack described above. The electrical device has all the benefits of the battery pack described above, which are not further described in this disclosure. In some embodiments, the electrical device may be a vehicle, which is not limited in this disclosure.
[0044] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.
[0045] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0046] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. A single battery, characterized in that: It includes a pole core, a pole ear and a lead-out piece, the pole ear includes a first ear segment connected to the pole core, and a second ear segment connected to the first ear segment, the lead-out piece includes a first segment arranged obliquely, the first segment gradually approaches the pole core in a direction away from the first ear segment, and the second ear segment is snugly connected to the first segment.
2. The single cell according to claim 1, characterized in that: The pole core has an end face, the first ear segment extends out of the pole core through the end face and extends along a first direction perpendicular to the end face, the first segment extends obliquely along a second direction, and the angle between the first segment extending along the second direction and the first ear segment extending along the first direction is at least 15°.
3. The single cell according to claim 2, characterized in that: An included angle between the first segment extending along the second direction and the first ear segment extending along the first direction is 20°.
4. The single cell according to claim 1 or 2, characterized in that: The first segment is arranged between the pole core and the pole tab.
5. The single cell according to claim 4, characterized in that: A baffle is provided at one end of the first segment away from the first ear segment, and the baffle is provided on a side of the first segment away from the pole core.
6. The single cell according to claim 4, characterized in that: The lead-out piece includes a second piece connected to the first piece. The second piece is arranged between the pole core and the pole tab and supported on the pole core.
7. The single cell according to claim 6, characterized in that: The second piece abuts against the first ear segment.
8. The single cell according to claim 7, characterized in that: The second piece is arranged parallel to the first ear segment, and the second piece is in contact with the first ear segment.
9. The single cell according to claim 6, characterized in that: The lead-out piece includes a third segment, the single battery includes a cover plate and a pole, the third segment is connected between the pole and the second segment, and the pole is provided on the cover plate.
10. The single cell according to claim 1, characterized in that: The single battery comprises a cover plate and a cap, wherein the cover plate is provided with an opening groove, and the cap is arranged at the opening groove and forms a receiving cavity with the cover plate. The second ear segment and the first segment at least partially extend into the accommodating cavity through the opening slot, and the first ear segment partially extends into the accommodating cavity through the opening slot.
11. A battery pack, characterized in that: A single cell battery comprising any one of claims 1 to 10.
12. An electrical device, characterized in that: Including the battery pack according to claim 11.