Battery protection board, battery and electronic equipment

Abstract

The utility model relates to a battery protection board, a battery and electronic equipment. The battery protection board comprises: a flexible circuit board, wherein the flexible circuit board comprises a surrounding part and a bending part electrically connected with the surrounding part; a first connector; the first connector and the second connector are electrically connected to the first side of the surrounding part, the bending part is bent from the second side of the surrounding part to cover a part of hollow area surrounded by the surrounding part, and the second side and the first side are oppositely arranged; the positive pole lug is arranged on the second side of the surrounding part, current from the first connector flows to the positive pole lug through the surrounding part, and current from the second connector flows to the positive pole lug through the surrounding part and the bending part; the current from the first connector and the current from the second connector flow in opposite directions.

Description

Technical Field

[0001] The present disclosure relates to the field of terminal technology, and in particular to a battery protection board, a battery and an electronic device. Background Art

[0002] As the battery capacity of electronic devices such as mobile phones increases, high-power fast charging technology has become a regular configuration function of electronic devices such as mobile phones.

[0003] In a related technology, two positive nickel sheets connected to the positive electrode of the same battery protection board are arranged on the battery protection board, and the two positive nickel sheets are electrically connected to the positive end of the charging connector, and the two positive nickel sheets are electrically connected through a metal piece. As a result, the positive nickel sheet, the metal piece and the positive ear of the battery cell need to be welded at the positive nickel sheet, which increases the process requirements and reduces the product yield. Utility Model Content

[0004] The present disclosure provides a battery protection board, a battery and an electronic device to solve the deficiencies in the related art.

[0005] According to a first aspect of an embodiment of the present disclosure, there is provided a battery protection board, comprising:

[0006] A flexible circuit board, the flexible circuit board comprising a surrounding portion and a bending portion electrically connected to the surrounding portion;

[0007] a first connector;

[0008] a second connector, wherein the first connector and the second connector are both electrically connected to a first side of the surrounding portion, the bent portion is bent from the second side of the surrounding portion to cover a portion of the hollow area surrounded by the surrounding portion, and the second side is disposed opposite to the first side;

[0009] A positive electrode ear, wherein the positive electrode ear is arranged on the second side of the surrounding portion, the current from the first connector flows to the positive electrode ear through the surrounding portion, and the current from the second connector flows to the positive electrode ear through the surrounding portion and the bending portion, and the flow directions of the current from the first connector and the current from the second connector are opposite.

[0010] Optionally, a hard circuit board electrically connected to the flexible circuit board is further included, the surrounding portion is arranged around the hard circuit board, and the bending portion covers a portion of the hard circuit board.

[0011] Optionally, the rigid circuit board includes an avoidance groove, and the bending portion is accommodated in the avoidance groove.

[0012] Optionally, a gap is formed between the surrounding portion and the bending portion.

[0013] Optionally, the surrounding portion is substantially arranged in a square ring, and the first side and the second side are located on long sides of the square ring.

[0014] Optionally, the surrounding portion includes a break, the first connector is located on one side of the break, and the second connector is located on the other side of the break.

[0015] Optionally, a negative electrode ear is further included, and the negative electrode ear is arranged on the first side or the second side of the surrounding portion.

[0016] According to a second aspect of an embodiment of the present disclosure, there is provided a battery, comprising:

[0017] A battery cell, the battery cell comprising a positive electrode and a negative electrode;

[0018] In the battery protection plate as described in any of the aforementioned embodiments, the positive electrode ear is electrically connected to the positive electrode, and the negative electrode ear of the battery protection plate is electrically connected to the negative electrode.

[0019] Optionally, double-sided tape is also included, and the double-sided tape is bonded between the battery cell and the battery protection plate.

[0020] According to a third aspect of the embodiments of the present disclosure, there is provided an electronic device, comprising a battery as described in any one of the aforementioned embodiments.

[0021] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0022] It can be seen from the above embodiments that in the present disclosure, on the one hand, the current loop from the first connector to the positive ear and the current loop from the second connector to the positive ear form multiple current loops, thereby reducing the current value of each current loop, which is beneficial to reducing the temperature rise of the battery protection board; on the other hand, through the setting of the bending portion, a part of the current on the second side will not pass through the plane where the second side is located, thereby reducing the overlapping area of ​​the current on the flexible circuit board on the projection plane of the second side, which is beneficial to reducing the temperature rise of the battery protection board.

[0023] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0025] Figure 1 The figure is a schematic diagram of an exploded view of a battery protection board according to an exemplary embodiment.

[0026] Figure 2The figure is a schematic diagram of the structure of a flexible circuit board according to an exemplary embodiment.

[0027] Figure 3 is a schematic diagram of a battery structure according to an exemplary embodiment. DETAILED DESCRIPTION

[0028] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0029] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0030] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0031] Figure 1 It is a schematic diagram of an exploded view of a battery protection board according to an exemplary embodiment. The battery protection board includes a flexible circuit board 1, a first connector 2, a second connector 3 and a positive electrode ear 4. The flexible circuit board 1 includes a surrounding portion 11 and a bending portion 12 electrically connected to the surrounding portion 11. The internal circuit of the bending portion 12 is connected to the internal circuit of the surrounding portion 11, and in terms of physical shape, the bending portion 12 is bent relative to the surrounding portion 11, and the bending portion 12 is bent from the second side of the surrounding portion 11 toward the hollow area of ​​the surrounding portion 11 to cover a part of the hollow area surrounded by the surrounding portion 11. The first connector 2 and the second connector 3 are both electrically connected to the first side of the surrounding portion 11, so that the first connector 2 and the second connector 3 can be connected to the positive electrode of the external power supply through the internal circuit of the electronic device to which they belong to realize charging.

[0032] The positive electrode tab 4 is arranged on the second side of the surrounding portion 11, that is, Figure 1 The bottom side of the flexible circuit board 1 shown in FIG. 1 can be used to electrically connect the positive electrode of the battery cell. The first connector 2 and the second connector 3 are arranged at Figure 1 The top side of the flexible circuit board 1 is still Figure 1 As shown, the current from the first connector 2 flows to the positive electrode tab 4 through the surrounding portion, and the current from the second connector 3 flows to the positive electrode tab 4 through the surrounding portion 11 and the bent portion 12, and the flow directions of the current from the first connector 2 and the second connector 3 are opposite.

[0033] Based on this, on the one hand, the current loop from the first connector 2 to the positive ear 4 and the current loop from the second connector 3 to the positive ear 4 form multiple current loops, thereby reducing the current value of each current loop, which is beneficial to reducing the temperature rise of the battery protection board; on the other hand, the current loop from the first connector 2 to the positive ear 4 and the current loop from the second connector 3 to the positive ear 4, through the setting of the bending portion 12, can make a part of the current on the second side not pass through the plane where the second side is located, reducing the overlapping area of ​​the current on the flexible circuit board 1 on the projection plane of the second side, which is beneficial to reducing the temperature rise of the battery protection board. Among them, for the first connector 2 and the second connector 3, in some embodiments, the surrounding portion 11 also includes a slit 111, and the first connector 2 and the second connector 3 are arranged on both sides of the slit 111, so as to facilitate the currents of the two charging circuits to flow in the same direction, reducing the complexity of the internal circuit.

[0034] Of course, in order to complete the charging circuit, the battery protection board also includes a negative electrode ear 6 electrically connected to the flexible circuit board 1, and the negative electrode ear 6 can be arranged on the first side or the second side of the surrounding portion 11. And the negative electrode ear 6 can be used to electrically connect to the negative electrode of the battery cell, and further, the negative electrode ear 6 can also be connected to the negative electrode of the external power supply through the internal circuit of the electronic device to which it belongs. In some embodiments, the surrounding portion 11 can be basically arranged in a square ring, and the first side and the second side are located on the long side of the square ring, which is conducive to increasing the reduction of the overlapping area and reducing the temperature rise of the battery protection board as much as possible.

[0035] Furthermore, Figure 1As shown, the battery protection board also includes a hard circuit board 5 electrically connected to the flexible circuit board 1, and the surrounding portion 11 can be arranged around the hard circuit board 5 to make full use of the surrounding space formed by the surrounding portion 11 and reduce the volume of the battery protection board. The bending portion 12 can cover a part of the hard circuit board 5 after being bent relative to the surrounding portion 11, and since there is less obstruction in the depth direction of the surrounding space formed by the surrounding portion 11, the area and volume of the bending portion 12 can be appropriately increased to reduce the impedance of the flexible circuit board 1. Among them, electronic devices for completing the functions related to the battery protection board can be arranged on the hard circuit board 5. Among them, the hard circuit board 5 includes an avoidance groove 51, and the bending portion 12 can be accommodated in the avoidance groove 51, thereby improving the neatness of the appearance of the battery protection board and helping to reduce the volume of the battery protection board. Of course, in some embodiments, the hard circuit board 5 may not be provided with the avoidance groove 51, and the bending portion 12 can be stacked on the surface of the hard circuit board 5.

[0036] In some embodiments, Figure 2 As shown, a gap 13 is formed between the surrounding portion 11 and the bending portion 12. The setting of the gap 13 can reduce the difficulty of bending between the surrounding portion 11 and the bending portion 12, and reduce the area of ​​the flexible circuit board 1 that is continuously in a bent state, which is beneficial to prolonging the service life of the flexible circuit board 1. Of course, in other embodiments, no gap may be formed between the surrounding portion 11 and the bending portion 12.

[0037] Based on the technical solution disclosed in this disclosure, Figure 3 As shown, a battery is also provided, the battery comprising a battery cell 101 and a battery protection board, the battery cell 101 comprising a positive electrode and a negative electrode, the positive electrode ear 4 of the battery protection board is electrically connected to the positive electrode of the battery cell, and the negative electrode ear 6 of the battery protection board is electrically connected to the negative electrode of the battery cell, thereby forming a complete charge and discharge circuit. Of course, in addition to the electrical connection relationship between the negative electrode ear 6 and the negative electrode, and the electrical connection relationship between the positive electrode ear 4 and the positive electrode between the battery protection board and the battery cell, the battery also comprises a double-sided adhesive tape, which can be bonded between the battery cell 101 and the battery protection board to improve the stability and reliability of the battery.

[0038] Based on the technical solution of the present disclosure, an electronic device is also provided, the electronic device comprising the battery described in any of the above embodiments. The electronic device may include a mobile phone terminal, a tablet terminal, a wearable device, etc.

[0039] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0040] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A battery protection board, characterized in that: include: A flexible circuit board, the flexible circuit board comprising a surrounding portion and a bending portion electrically connected to the surrounding portion; a first connector; a second connector, wherein the first connector and the second connector are both electrically connected to a first side of the surrounding portion, the bent portion is bent from the second side of the surrounding portion to cover a portion of the hollow area surrounded by the surrounding portion, and the second side is disposed opposite to the first side; A positive electrode ear, wherein the positive electrode ear is arranged on the second side of the surrounding portion, the current from the first connector flows to the positive electrode ear through the surrounding portion, and the current from the second connector flows to the positive electrode ear through the surrounding portion and the bending portion, and the flow directions of the current from the first connector and the current from the second connector are opposite.

2. The battery protection board according to claim 1, characterized in that: It also includes a hard circuit board electrically connected to the flexible circuit board, the surrounding portion is arranged around the hard circuit board, and the bending portion covers a part of the hard circuit board.

3. The battery protection board according to claim 2, characterized in that: The rigid circuit board comprises an avoidance groove, and the bending portion is accommodated in the avoidance groove.

4. The battery protection board according to claim 1, characterized in that: A gap is formed between the surrounding portion and the bent portion.

5. The battery protection board according to claim 1, characterized in that: The surrounding portion is substantially arranged in a square ring, and the first side and the second side are located at long sides of the square ring.

6. The battery protection board according to claim 1, characterized in that: The surrounding portion includes a break, the first connector is located on one side of the break, and the second connector is located on the other side of the break.

7. The battery protection board according to claim 1, characterized in that: It also includes a negative electrode ear, which is arranged on the first side or the second side of the surrounding portion.

8. A battery, characterized in that: include: A battery cell, the battery cell comprising a positive electrode and a negative electrode; The battery protection plate according to any one of claims 1 to 7, wherein the positive electrode ear is electrically connected to the positive electrode, and the negative electrode ear of the battery protection plate is electrically connected to the negative electrode.

9. The battery according to claim 8, characterized in that It also includes double-sided tape, which is bonded between the battery core and the battery protection plate.

10. An electronic device, characterized in that: Comprising the battery as claimed in claim 9.

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