Battery cell noise reduction structure of Bluetooth earphone

Abstract

The utility model discloses a cell noise reduction structure of a Bluetooth earphone, and relates to the technical field of Bluetooth earphone cells. The lithium ion battery comprises a battery cell, a coiled positive plate and a coiled negative plate are arranged in the battery cell, a positive tab and a negative tab are mounted on the battery cell, the positive tab is connected with the positive plate, and the negative tab is connected with the negative plate; the battery further comprises a noise reduction FPC circuit board installed on the battery cell, the noise reduction FPC circuit board is provided with a copper foil coil, one end of the copper foil coil is electrically connected with the negative pole lug, the other end of the copper foil coil is connected with a negative pole connecting part, the wiring direction of the copper foil coil is consistent with the winding direction of the outermost layer of the negative pole piece, and the wiring direction of the copper foil coil is consistent with the winding direction of the outermost layer of the negative pole piece. And the current direction of the copper foil coil is opposite to that of the outermost layer of the negative plate. According to the utility model, the magnetic field generated by the super-long part of the negative plate of the battery cell can be offset, the radiation to the loudspeaker, the PCBA circuit board and other components of the Bluetooth earphone can be avoided, and the noise generated by the battery cell can be eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of Bluetooth headset batteries, and in particular to a Bluetooth headset battery noise reduction structure. Background Art

[0002] At present, a battery cell needs to be installed in a Bluetooth headset. The battery cell has a wound positive electrode sheet and a negative electrode sheet. The battery cell is equipped with a positive electrode ear and a negative electrode ear. The positive electrode ear is connected to the positive electrode sheet, and the negative electrode ear is connected to the negative electrode sheet. In the prior art, the positive electrode sheet and the negative electrode sheet of the battery cell are wound together at the same time. The winding process of the battery cell cannot make the length of the positive electrode sheet and the negative electrode sheet the same. This causes the length of the outermost end of the negative electrode sheet of the battery cell in the prior art to exceed the length of the outermost end of the positive electrode sheet. Since the extra-long part of the negative electrode sheet cannot form a differential line with the same spacing and length as the positive electrode sheet, the magnetic field generated by the extra-long part of the negative electrode sheet cannot offset the magnetic field generated by the positive electrode sheet, which will interfere with the radiation to the speaker, PCBA circuit board and other components of the Bluetooth headset, generating noise. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a battery cell noise reduction structure for a Bluetooth headset based on the above-mentioned deficiencies in the prior art, which can offset the magnetic field generated by the extra-long part of the negative electrode sheet of the battery cell, avoid radiation to the speaker, PCBA circuit board and other components of the Bluetooth headset, and eliminate the noise generated by the battery cell.

[0004] To solve the above technical problems, the technical solution of the utility model is: a battery cell noise reduction structure for a Bluetooth headset, comprising a battery cell, wherein the battery cell has a wound positive electrode sheet and a negative electrode sheet, and the battery cell is equipped with a positive electrode tab and a negative electrode tab, the positive electrode tab is connected to the positive electrode sheet, and the negative electrode tab is connected to the negative electrode sheet; it also includes a noise reduction FPC circuit board installed on the battery cell, the noise reduction FPC circuit board is provided with a copper foil coil, one end of the copper foil coil is electrically connected to the negative electrode tab, and the other end of the copper foil coil is connected to the negative electrode connection part, the routing direction of the copper foil coil is consistent with the winding direction of the outermost layer of the negative electrode sheet, and the current direction of the copper foil coil is opposite to the current direction of the outermost layer of the negative electrode sheet.

[0005] Preferably, the battery cell is a cylindrical battery cell, the noise reduction FPC circuit board includes an FPC main body, the shape of the FPC main body matches the shape of the end of the cylindrical battery cell, and the FPC main body is bonded to the end of the cylindrical battery cell, and the copper foil coil is arranged on the FPC main body.

[0006] Preferably, one end of the FPC main body is connected to a first connection part, a pole ear connection part integrally connected to the copper foil coil is provided on the first connection part, and the negative pole ear is connected to the pole ear connection part; the other end of the FPC main body is connected to a second connection part, the negative pole connection part is provided on the second connection part, and the negative pole connection part is integrally connected to the copper foil coil.

[0007] Preferably, double-sided tape is provided between the FPC main body and the end of the cylindrical battery core.

[0008] Preferably, the positive electrode tab is connected to a positive electrode connecting wire, and the negative electrode connecting portion at the other end of the copper foil coil is connected to a negative electrode connecting wire.

[0009] The beneficial effect of the utility model is as follows: since the noise reduction FPC circuit board is provided with a copper foil coil, one end of the copper foil coil is electrically connected to the negative pole ear, and the other end of the copper foil coil is connected to the negative pole connection part, the routing direction of the copper foil coil is consistent with the winding direction of the outermost layer of the negative pole sheet, and the current direction of the copper foil coil is opposite to the current direction of the outermost layer of the negative pole sheet. Therefore, the magnetic field generated by the extra-long part of the negative pole sheet of the battery cell exceeding the positive pole sheet can be offset by the magnetic field generated by the copper foil coil, thereby avoiding the magnetic field generated by the extra-long part of the negative pole sheet of the battery cell from radiating to the speaker of the Bluetooth headset, PCBA circuit board and other components, thereby eliminating the noise generated by the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the overall structure diagram of the utility model.

[0011] Figure 2 This is a diagram of the dispersed structure of the utility model.

[0012] Figure 3 This is a diagram of the battery cell and headphone speaker installation status.

[0013] In the figure: 1. Battery cell; 11. Positive electrode tab; 12. Negative electrode tab; 2. Noise reduction FPC circuit board; 21. Copper foil coil; 22. Negative electrode connection part; 23. FPC main body; 24. First connection part; 25. Tab connection part; 26. Second connection part; 3. Double-sided tape; 4. Positive electrode connection wire; 5. Negative electrode connection wire; 6. Battery cell label. DETAILED DESCRIPTION

[0014] The structural principle and working principle of the utility model are further described in detail below with reference to the accompanying drawings.

[0015] like Figure 1 and Figure 2As shown, the utility model is a battery cell noise reduction structure for a Bluetooth headset, including a battery cell 1, wherein the battery cell 1 has a wound positive electrode sheet and a negative electrode sheet, and a positive electrode tab 11 and a negative electrode tab 12 are installed on the battery cell 1, wherein the positive electrode tab 11 is connected to the positive electrode sheet, and the negative electrode tab 12 is connected to the negative electrode sheet; it also includes a noise reduction FPC circuit board 2 installed on the battery cell 1, wherein the noise reduction FPC circuit board 2 is provided with a copper foil coil 21, wherein one end of the copper foil coil 21 is electrically connected to the negative electrode tab 12, and the other end of the copper foil coil 21 is connected to a negative electrode connection portion 22, wherein the routing direction of the copper foil coil 21 is consistent with the winding direction of the outermost layer of the negative electrode sheet, and the current direction of the copper foil coil 21 is opposite to the current direction of the outermost layer of the negative electrode sheet. Figure 3 As shown, an earphone speaker 7 is installed on the lower side of the battery core 1 . The earphone speaker 7 is provided with a speaker magnet 71 . The position of the speaker magnet 71 is opposite to the position of the battery core 1 .

[0016] In this embodiment, the positive electrode sheet is a clockwise wound positive electrode sheet, the positive electrode sheet is a clockwise wound negative electrode sheet, the outermost end length of the negative electrode sheet exceeds the outermost end length of the positive electrode sheet, and the copper foil coil is a counterclockwise copper foil coil. When the battery cell outputs current, the current direction of the extra-long part of the negative electrode sheet of the battery cell that exceeds the positive electrode sheet is opposite to the current direction of the copper foil coil. Therefore, the magnetic field generated by the extra-long part of the negative electrode sheet of the battery cell that exceeds the positive electrode sheet can be offset by the magnetic field generated by the copper foil coil 21, thereby avoiding the magnetic field generated by the extra-long part of the negative electrode sheet of the battery cell 1 from radiating to the headphone speakers, PCBA circuit boards and other components of the Bluetooth headset, especially avoiding the battery cell 1 from interfering with the magnetic field of the speaker magnet of the headphone speaker, thereby eliminating the noise generated by the battery cell 1.

[0017] like Figure 1 and Figure 2 As shown, the battery cell 1 is a cylindrical battery cell 1, and the positive electrode sheet and the negative electrode sheet are respectively spirally wound. The noise reduction FPC circuit board 2 includes an FPC main body 23, and the shape of the FPC main body 23 matches the shape of the end of the cylindrical battery cell 1, and the FPC main body 23 is bonded to the end of the cylindrical battery cell 1. The copper foil coil 21 is arranged on the FPC main body 23, and the routing direction of the copper foil coil 21 is arc-shaped. A double-sided tape 3 is provided between the FPC main body 23 and the end of the cylindrical battery cell 1, and they are bonded by the double-sided tape 3. One end of the FPC main body 23 is connected to a first connecting portion 24, on which a tab connecting portion 25 integrally connected to the copper foil coil 21 is provided, and the negative pole tab 12 is connected to the tab connecting portion 25; the other end of the FPC main body 23 is connected to a second connecting portion 26, on which the negative pole connecting portion 22 is provided, and the negative pole connecting portion 22 is integrally connected to the copper foil coil 21.

[0018] like Figure 1 and Figure 2 As shown, the positive electrode tab 11 is connected to a positive electrode connecting wire 4, and the negative electrode connecting portion 22 at the other end of the copper foil coil 21 is connected to a negative electrode connecting wire 5, and current is output to the outside through the positive electrode connecting wire 4 and the negative electrode connecting wire 5. In addition, a battery cell label 6 is also attached to the lower side of the battery cell 1 to indicate the battery cell model and basic parameters.

[0019] The above is only a preferred embodiment of the present invention. Any slight modification, equivalent changes and modifications made to the above embodiments according to the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A cell noise reduction structure for a Bluetooth headset, comprising a cell (1), wherein the cell (1) has a wound positive electrode sheet and a negative electrode sheet, and the cell (1) is provided with a positive electrode tab (11) and a negative electrode tab (12), wherein the positive electrode tab (11) is connected to the positive electrode sheet, and the negative electrode tab (12) is connected to the negative electrode sheet; characterized in that: The invention also comprises a noise reduction FPC circuit board (2) mounted on the battery cell (1), the noise reduction FPC circuit board (2) being provided with a copper foil coil (21), one end of the copper foil coil (21) being electrically connected to the negative electrode tab (12), the other end of the copper foil coil (21) being connected to the negative electrode connecting portion (22), the routing direction of the copper foil coil (21) being consistent with the winding direction of the outermost layer of the negative electrode sheet, and the current direction of the copper foil coil (21) being opposite to the current direction of the outermost layer of the negative electrode sheet.

2. The battery cell noise reduction structure of the Bluetooth headset according to claim 1, characterized in that: The battery core (1) is a cylindrical battery core (1), the noise reduction FPC circuit board (2) comprises an FPC main body (23), the shape of the FPC main body (23) matches the shape of the end of the cylindrical battery core (1), and the FPC main body (23) is bonded to the end of the cylindrical battery core (1), and the copper foil coil (21) is arranged on the FPC main body (23).

3. The battery cell noise reduction structure of the Bluetooth headset according to claim 2, characterized in that: One end of the FPC main body (23) is connected to a first connection part (24), a tab connection part (25) integrally connected to the copper foil coil (21) is provided on the first connection part (24), and the negative pole tab (12) is connected to the tab connection part (25); the other end of the FPC main body (23) is connected to a second connection part (26), the negative pole connection part (22) is provided on the second connection part (26), and the negative pole connection part (22) is integrally connected to the copper foil coil (21).

4. The battery cell noise reduction structure of the Bluetooth headset according to claim 2, characterized in that: A double-sided adhesive tape (3) is provided between the FPC main body (23) and the end of the cylindrical battery core (1).

5. The battery cell noise reduction structure of the Bluetooth headset according to claim 1, characterized in that: The positive electrode tab (11) is connected to a positive electrode connecting wire (4), and the negative electrode connecting portion (22) at the other end of the copper foil coil (21) is connected to a negative electrode connecting wire (5).

6. The battery cell noise reduction structure of the Bluetooth headset according to claim 1, characterized in that: An earphone speaker (7) is installed on the lower side of the battery core (1), and the earphone speaker (7) is provided with a speaker magnet (71), and the position of the speaker magnet (71) is opposite to the position of the battery core (1).

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