Battery and battery cap

Abstract

According to the battery and the battery cap provided by the utility model, the strength requirement can be met by a thinner material, the cost is low, the assembly process is simple and convenient, and the risk that the cap is sunken after the battery falls can be avoided. The battery (100) is provided with: a battery case (110) for encapsulating a battery cell; the battery cover cap (120) is arranged at at least one end of the battery shell (110) and is electrically connected with the battery core, the interior of the battery cover cap (120) is hollow, and a plurality of rib positions (123) are arranged on the side wall (121) of the battery cover cap (120).

Description

Technical Field

[0001] The utility model relates to a battery and a battery cap. Background Art

[0002] With the development of electronic technology, the demand for batteries as power sources for driving these electronic products is increasing continuously. Battery packs with multiple single cells are increasingly used in electronic devices such as cameras, video cameras, and computers as power sources for these electronic devices. A single cell includes, for example, a nickel-metal hydride battery and a lithium battery, etc. Generally, the power generation elements are housed in a metal battery case with one end open and sealed.

[0003] As a power source for household appliances, a battery pack of multiple single cells connected in series is mostly adopted. As the positive and negative terminal posts of each of the multiple single cells connected end to end, there are convex battery caps serving as positive electrode posts or negative electrode posts.

[0004] In the prior art, in order to ensure the strength of the battery cap, it is necessary to use a thicker material, or fill glue and resin parts inside the cap. Therefore, there are problems such as many components of the battery cap, high cost, complex processes, and inconvenient assembly. Moreover, there is also a risk that the cap will be dented after the battery falls.

[0005] Therefore, a battery cap with low cost and simple and convenient assembly process, and a battery using the battery cap are expected. Summary of the Utility Model

[0006] The inventor of the utility model has conducted intensive research and proposed a battery and a battery cap, which can meet the strength requirements with a thinner material, have low cost and simple and convenient assembly process, and can avoid the risk of the cap being dented after the battery falls.

[0007] The technical solution of the utility model is as follows.

[0008] The utility model provides a battery, which is characterized in that it comprises: a battery case for encapsulating an electric core; and a battery cap provided at at least one end of the battery case and electrically connected to the electric core. The inside of the battery cap is hollow, and there are multiple rib positions on its side wall.

[0009] In addition, preferably, each of the multiple rib positions is a structure recessed into the hollow interior of the battery cap.

[0010] In addition, preferably, each of the multiple rib positions is a long strip shape with the direction in which the battery cap protrudes from one end of the battery case as the long side. And the length dimension of the long-strip-shaped rib position is 2 / 3 or more of the height dimension of the battery cap, and the width dimension of the long-strip-shaped rib position is not more than the thickness of the side wall of the battery cap.

[0011] In addition, preferably, the battery cap is a cylinder, and a plurality of rib positions are provided at equal intervals on the side wall of the battery cap.

[0012] In addition, preferably, the depth at which each of the plurality of rib positions recesses into the hollow interior of the battery cap does not exceed the thickness of the side wall of the battery cap.

[0013] In addition, preferably, the spacing of the plurality of rib positions is designed according to the thickness of the side wall of the battery cap, so that the thinner the thickness, the smaller the spacing.

[0014] In addition, preferably, rib positions are also provided on the top wall of the battery cap.

[0015] In addition, preferably, the battery cap includes a positive cap provided at one end of the battery case and a negative cap provided at the other end of the battery case.

[0016] In addition, the present utility model provides a battery cap, characterized in that the battery cap is for installation at at least one end of a battery case of a battery, has a hollow interior structure, and has a plurality of rib positions on its side wall.

[0017] Thus, the battery and the battery cap of the present utility model can meet the strength requirements with a thinner material, have low cost and simple and convenient assembly procedures, and can avoid the risk of the cap being recessed after the battery falls. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 25 is a perspective view schematically showing the battery 100 observed from two angles according to an embodiment of the present utility model.

[0019] Figure 2 FIG. 29 is a front view schematically showing the battery 100 according to an embodiment of the present utility model.

[0020] Figure 3 FIG. 33 is a sectional perspective view schematically showing a partial enlargement of the battery cap 120 in the battery 100 according to an embodiment of the present utility model.

[0021] Figure 4 FIG. 37 is a sectional perspective view schematically showing a partial enlargement of the battery cap in the battery in the prior art. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Hereinafter, embodiments of the present utility model will be described with reference to the accompanying drawings. However, in the embodiments described below, various technically preferred limitations are added for implementing the present utility model. Therefore, the technical scope of the present disclosure is not limited to the following embodiments and illustrated examples. Also, the sizes, shapes, and proportional relationships in the illustrated examples are only schematic and not specific sizes, shapes, and proportional relationships. Additionally, in the accompanying drawings, the same reference numerals are assigned to the common components in the embodiments, and repeated descriptions are omitted. Furthermore, the front, rear, left, right, top, bottom, etc. described in the specification refer to the orientations relative to the paper surface direction.

[0023] Figure 1 FIG. is a perspective view schematically showing a battery 100 from two angles of one embodiment of the present utility model. As Figure 1 shown, the battery 100 is, for example, a cylindrical battery, and according to practical requirements, it can be a primary battery or a secondary battery, and can be a common small dry battery such as a No. 5 or No. 7 battery, or a secondary battery such as a nickel-metal hydride battery or a lithium battery. In addition, the battery 100 can also be a cuboid battery other than those shown in the figure.

[0024] As the main body of the battery 100, the battery 100 has a battery case 110. When observed from the outside of the battery 100, the battery case 110 includes a cylindrical circumferential side wall and a positive electrode top wall and a negative electrode top wall respectively provided at both ends. Among them, although not shown, inside the battery case 110, there is an electrode core containing electrode active material, and the positive and negative electrodes of the electrode core are electrically connected to battery caps 120 serving as a positive electrode cap and a negative electrode cap respectively.

[0025] Figure 2 FIG. is a front view of the battery 100 schematically showing one embodiment of the present utility model. As Figure 2 shown, the battery caps 120 include a positive electrode cap provided at one end of the battery case 110 and a negative electrode cap provided at the other end of the battery case. The battery caps 120 are made of a conductive metal such as aluminum or copper, and are respectively installed on the positive electrode top wall and the negative electrode top wall of the battery case 110, for example, by spot welding, so as to be connected to the battery case 110.

[0026] In addition, the battery caps 120 can also have a structure other than that shown in the figure. For example, the battery 100 can have only the battery cap 120 serving as the positive electrode cap on the positive electrode side, and this battery cap 120 is electrically connected to, for example, a graphite rod in the electrode core, while there is no battery cap 120 on the negative electrode side of the battery 100. That is, the battery caps 120 are provided on at least one end side of the battery case 110.

[0027] The battery caps 120 are cylindrical, and have a side wall 121 along the cylindrical circumferential surface and a top wall 122 serving as the cylindrical top surface. At least on the side wall 121, there are provided a plurality of rib positions 123. AsFigure 2 As shown, in the front view of the battery 100, the shape of each rib 123 is a long strip with the long side in the direction in which the battery cap 120 protrudes from one end of the battery case 110. In addition, the shape and position of each rib 123 are not limited to this. As long as the strength requirement of the battery cap 120 can be satisfied, it can also be an obliquely long strip or a round hole shape, and multiple ribs 123 can also intersect with each other.

[0028] Figure 3 is a sectional perspective view schematically showing a partial enlargement of the battery cap 120 in the battery 100 according to an embodiment of the present invention. As Figure 3 shown, the battery cap 120 is in the shape of a hollow cylinder, and each of the multiple ribs 123 is a structure that is recessed into the hollow interior of the battery cap 120. By making the interior of the battery cap 120 hollow, the structure of the battery cap 120 can be made simple and the manufacturing cost can be reduced. Moreover, with the multiple ribs 123 having such a recessed structure, the strength of the battery cap 120 can be ensured even when its interior is hollow.

[0029] In addition, as Figures 2 - 3 shown, in order to ensure the strength of the battery cap 120, the length dimension of the long strip-shaped rib 123 is preferably 1 / 2 or more, more preferably 2 / 3 or more, of the height dimension of the battery cap 120 (i.e., the height at which the battery cap 120 protrudes from one end of the battery case 110). And, in order to avoid deformation of the rib 123 body, the width dimension of the long strip-shaped rib 123 is preferably not more than the thickness of the side wall 121 of the battery cap 120.

[0030] In addition, as Figure 3 shown, the depth to which each of the multiple ribs 123 is recessed into the hollow interior of the battery cap 120 is preferably not more than the thickness of the side wall 121 of the battery cap 120, so as to avoid stress deformation of the rib 123 body and reduce its own rigidity.

[0031] In other words, in order to ensure the strength of the battery cap 120, it is preferable to arrange multiple ribs 123 at equal intervals on the side wall 121 of the battery cap 120, to increase the strength by increasing the number of ribs 123, and to avoid stress deformation of the ribs 123 by avoiding excessive width and depth dimensions of the ribs 123.

[0032] In addition, the strength of the battery cap 120 depends on the thickness of its side wall 121. By arranging the ribs 123, it is possible to ensure sufficient strength with a battery cap 120 having a relatively thin thickness, but the number of ribs 123 should be arranged according to the thickness of the side wall 121 of the battery cap 120. Specifically, the spacing between the multiple ribs 123 is designed according to the thickness of the side wall 121 of the battery cap 120, such that the thinner the thickness, the smaller the spacing between the multiple ribs 123.

[0033] Regarding the manufacturing process of the battery cap 120, for example, the hollow battery cap 120 with multiple rib positions 123 is integrally formed by a stamping process. Thus, the battery cap 120 with sufficient strength can be simply achieved through one processing step.

[0034] In addition, in the hollow battery cap 120, the multiple rib positions 123 are not limited to the structure that recesses into the hollow interior of the battery cap 120. For example, on the basis of maintaining the smooth cylindrical outer surface of the battery cap 120, multiple rib positions 123 as reinforcing ribs can be provided on its cylindrical inner surface to meet the strength requirements of the battery cap 120. When the rib positions 123 are provided on the inner surface of the battery cap 120, the battery cap 120 can be processed by a casting process, for example.

[0035] Figure 4 It is a schematic cross-sectional perspective view showing a partial enlargement of the battery cap in the battery of the prior art. As Figure 4 shown, in the prior art, no rib positions are provided in the battery cap. Therefore, in order to ensure the strength of the battery cap, a resin material is filled inside the cap, so the manufacturing cost of the battery cap is high. Also, when assembling the battery cap of the prior art, it is necessary to first assemble the parts of the resin material into the hollow interior of the battery cap, and then weld the battery cap to the battery case. Therefore, the manufacturing process of the battery cap is complex. In contrast, the battery cap 120 of an embodiment of the present utility model has the above-mentioned rib positions 123, so there is no need to provide additional parts of the resin material, the manufacturing cost is reduced, and the manufacturing process is simple.

[0036] The embodiments of the present utility model have been described above with reference to the accompanying drawings. Among them, the above-described embodiments are only specific examples of the present utility model for understanding the present utility model, and are not used to limit the scope of the present utility model. Those skilled in the art can make various deformations, combinations, and reasonable omissions of elements based on the technical idea of the present utility model, and the resulting modes are also included within the scope of the present utility model.

Claims

1. A battery, characterized in that: have: A battery casing, encapsulating the battery cells; and A battery cap is disposed at at least one end of the battery housing and is electrically connected to the battery cell. The battery cap is hollow inside and has a plurality of ribs on its side wall.

2. The battery according to claim 1, characterized in that Each of the plurality of ribs is a structure recessed into the hollow interior of the battery cap.

3. The battery according to claim 2, characterized in that Each of the plurality of ribs is in the shape of a long strip with the direction in which the battery cap protrudes from one end of the battery shell as the long side, and the length dimension of the long strip rib is more than 2 / 3 of the height dimension of the battery cap, and the width dimension of the long strip rib is less than the thickness of the side wall of the battery cap.

4. The battery according to claim 3, characterized in that The battery cap is a cylinder, and the plurality of ribs are arranged at equal intervals on the side wall of the battery cap.

5. The battery according to claim 4, characterized in that The depth of each of the plurality of ribs recessed into the hollow interior of the battery cap does not exceed the thickness of the side wall of the battery cap.

6. The battery according to claim 5, characterized in that The spacing between the plurality of ribs is designed according to the thickness of the side wall of the battery cap, so that the thinner the thickness is, the smaller the spacing is.

7. The battery according to claim 3, characterized in that Ribs are also provided on the top wall of the battery cap.

8. The battery according to any one of claims 1 to 7, characterized in that The battery cap includes a positive electrode cap disposed at one end of the battery housing and a negative electrode cap disposed at the other end of the battery housing.

9. A battery cap, characterized in that: The battery cap is installed on at least one end of the battery shell of the battery, has an internal hollow structure, and has a plurality of ribs on its side wall.

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