Battery unit

Abstract

This invention provides a battery cell, including a battery body and at least one electrode. The battery body has a side surface. The electrode is disposed on the side surface of the battery body, wherein the width of the electrode is greater than or equal to 0.3 times the width of the side surface.

Description

[Technical Field]

[0001] This invention relates to an electronic component, and more particularly to a battery cell. [Previous Technology]

[0002] Portable electronic products (such as laptops) must include a battery module to provide the power they require. The battery cells in the battery module have electrodes, which are typically soldered to a thermal cutting-off (TCO) and connected to the electrical contacts of the battery management unit (BMU) through the thermal cutting-off. With the electrode positions fixed, the placement of the thermal cutting-off is restricted. Correspondingly, the placement of the electrical contacts of the battery management unit is also restricted. [Summary of the Invention]

[0003] The present invention provides a battery cell in which the position of the electrodes can be adjusted as needed.

[0004] The battery cell of the present invention includes a battery body and at least one electrode. The battery body has a side surface. The electrode is disposed on the side surface of the battery body, wherein the width of the electrode is greater than or equal to 0.3 times the width of the side surface.

[0005] In one embodiment of the present invention, the electrodes described above are adapted to be partially removed to reduce the width of at least one electrode.

[0006] In one embodiment of the present invention, the electrodes described above are adapted to be partially removed to change the position of the geometric center of at least one electrode.

[0007] In one embodiment of the present invention, the battery cell includes a thermal fuse, wherein the thermal fuse is disposed on the side and connected to at least one electrode.

[0008] In one embodiment of the present invention, the electrode includes two electrodes and a thermal fuse is located between the two electrodes.

[0009] In one embodiment of the present invention, the width of the electrode is greater than or equal to 8.0 mm.

[0010] Based on the above, in the battery cell of the present invention, the electrodes are configured to have a larger width. Therefore, during the subsequent assembly of the battery cell, the electrodes can be partially removed to reduce their width, thereby changing the position of the geometric center of the electrodes and determining the final actual position of the electrodes. That is, by pre-fabricating the electrodes to have a larger width, the position of the electrodes can be adjusted as needed. This provides greater flexibility in the subsequent assembly of the battery cell.

Implementation Method

[0012] FIG1 is a partial schematic diagram of a battery cell according to an embodiment of the present invention. Referring to FIG1, the battery cell 100 of this embodiment is, for example, a battery assembly used in a notebook computer or other types of electronic products, and includes a battery body 110 and at least one electrode (shown as electrode 120 and electrode 130), which are the positive and negative electrodes of the battery cell 100, respectively. The battery body 110 has a side surface 110a, and the electrodes 120 and 130 are disposed on the side surface 110a of the battery body 110. In the width direction D of the battery cell 100, the width W1 of the electrode 120 is greater than or equal to 0.3 times the width W2 of the side surface 110a of the battery body 110, and the width W3 of the electrode 130 is greater than or equal to 0.3 times the width W2 of the side surface 110a of the battery body 110.

[0013] FIG2 illustrates that the electrodes of FIG1 have been partially removed. As described above, in the battery cell 100 of this embodiment, electrodes 120 and 130 are configured to have a relatively large width (e.g., greater than or equal to 8.0 mm). Therefore, during the subsequent assembly process of the battery cell 100, electrodes 120 and 130 can be partially removed as shown in FIG2 to reduce their width, thereby changing the position of the geometric center of each electrode 120 and 130, and determining the final actual position of each electrode 120 and 130. That is, by prefabricating electrodes 120 and 130 to have a relatively large width, the position of each electrode 120 and 130 can be adjusted as needed. Thus, the subsequent assembly of the battery cell 100 has greater flexibility.

[0014] In this embodiment, appropriate jigs or tools can be used to partially remove the electrodes, and the present invention does not limit this. In addition, it should be noted that the positions of electrodes 120 and 130 in FIG2 are just examples, and different parts of electrodes 120 and 130 can be removed according to different needs, so that electrodes 120 and 130 are located at different positions on side 110a after the removal operation is completed.

[0015] Figure 3 illustrates the battery cell of Figure 2 with an added thermal cutting-off (TCO) and connection to the battery management unit. Referring to Figure 3, the battery cell 100 may include a thermal cutting-off (TCO) 140, which is disposed on the side 110a of the battery body 110 between the two electrodes 120 and 130. The thermal cutting-off 140 is welded to the electrode 120 and connected to the electrical contact 52 of the battery management unit (BMU) 50. As described above, the positions of the electrodes 120 and 130 can be adjusted as needed, allowing for greater flexibility in the arrangement of the thermal cutting-off 140 and the electrical contact 52.

[0016] In summary, in the battery cell of the present invention, the electrodes are configured to have a larger width. Therefore, during the subsequent assembly of the battery cell, the electrodes can be partially removed to reduce their width, thereby changing the position of the geometric center of the electrodes and determining their final actual position. That is, by pre-fabricating the electrodes to have a larger width, the position of the electrodes can be adjusted as needed. This provides greater flexibility in the subsequent assembly of the battery cell. [Simplified Explanation of the Diagram]

[0011] FIG1 is a partial schematic diagram of a battery cell according to an embodiment of the present invention. FIG2 shows that the electrodes of FIG1 have been partially removed. FIG3 shows that the battery cell of FIG2 is equipped with a thermal fuse and connected to a battery management unit.

Claims

1. A battery cell, comprising: A battery body having a side side; and at least one electrode connected to and extending outward from the side side of the battery body, wherein the width of the at least one electrode is greater than or equal to 0.3 times the width of the side side, and the at least one electrode is adapted to be partially removed to reduce the width of the at least one electrode.

2. The battery cell of claim 1, wherein the at least one electrode is adapted to be partially removed to change the position of the geometric center of the at least one electrode.

3. The battery cell as claimed in claim 1, comprising a thermal fuse, wherein the thermal fuse is disposed on the side and connected to the at least one electrode.

4. The battery cell as claimed in claim 3, wherein the at least one electrode comprises two electrodes and the thermal fuse is located between the two electrodes.

5. The battery cell as claimed in claim 1, wherein the width of the at least one electrode is greater than or equal to 8.0 mm.

6. A battery cell, comprising: A battery body having a side side; and at least one electrode connected to and extending outward from the side side of the battery body, wherein the width of the at least one electrode is greater than or equal to 0.3 times the width of the side side, and the at least one electrode is adapted to be partially removed to change the position of the geometric center of the at least one electrode.

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