CN215418474U - Battery pack and terminal - Google Patents

Abstract

The utility model relates to a battery pack and terminal, battery pack includes battery, battery protection shield and flexible circuit board, the battery protection shield with the one end of battery links to each other, the flexible circuit board include the flexile section and respectively with two connectors that the flexile section both ends link to each other, the flexile section is followed the length direction of battery extends, just the flexile section with the battery protection shield links to each other, the connector is suitable for and links to each other with the chip that charges. The battery pack according to the embodiment of the disclosure has the advantages of high assembly efficiency, smooth wiring, low power consumption and the like.

Description

Battery pack and terminal

Technical Field

The present disclosure relates to the field of battery technologies, and in particular, to a battery pack and a terminal.

Background

With the improvement of charging power of mobile phone batteries and other terminal batteries, the current entering the battery is gradually increased, at present, in a high-power charging scheme of the battery, two charger charging chips are generally arranged on a main board, two flexible circuit boards are welded at one end of a battery protection board, the two flexible circuit boards are respectively connected with the two charger charging chips, but the design of double FPCs means that the current of the main board needs to bypass to the two flexible circuit boards, and impedance and heat power consumption can be increased. In addition, since the space of the battery protection board is limited, the two flexible circuit boards are connected to the battery protection board, resulting in a small width dimension of a single flexible circuit board and a large internal resistance, which also increases power consumption.

SUMMERY OF THE UTILITY MODEL

The present disclosure is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of the disclosure provides a battery assembly with smooth wiring and low power consumption.

The embodiment of the present disclosure also provides a terminal having the above battery assembly.

According to this disclosed battery pack includes battery, battery protection shield and flexible circuit board, the battery protection shield with the one end of battery links to each other, flexible circuit board include the flexible section and respectively with two connectors that the flexible section both ends link to each other, the flexible section is followed the length direction of battery extends, just the flexible section with the battery protection shield links to each other, the connector is suitable for and links to each other with the chip that charges.

The battery pack according to the embodiment of the disclosure has the advantages of high assembly efficiency, smooth wiring, low power consumption and the like.

In some embodiments, the flexible segment includes a middle segment and connecting segments respectively connected to two ends of the middle segment, and the connecting segments are used for connecting the connectors.

In some embodiments, the connection segments extend beyond both ends in the length direction of the battery.

In some embodiments, the length of at least one of the connection segments is greater than the distance between the middle segment and the charging chip.

In some embodiments, the intermediate section is affixed to an outer surface of the cell.

In some embodiments, the width of the flexible circuit board is less than the width of the battery.

In some embodiments, the battery protection board further comprises a pad, and the flexible circuit board is connected with the battery protection board through the pad in a welding mode.

In some embodiments, the pad is provided with a plurality of tin-penetrating holes, and the plurality of tin-penetrating holes are arranged at intervals along the width direction of the flexible circuit board.

In some embodiments, the tin-permeable hole is a strip-shaped hole extending along the length direction of the flexible circuit board.

A terminal according to the present disclosure includes the battery assembly according to any one of the above embodiments.

The terminal has the advantages of high assembly efficiency, low power consumption and the like.

Drawings

Fig. 1 is a schematic diagram of a battery assembly according to an embodiment of the present disclosure.

Fig. 2 is a schematic diagram of a pad according to an embodiment of the disclosure.

Fig. 3 is a schematic diagram of a first connection segment according to an embodiment of the present disclosure.

Fig. 4 is a schematic diagram of a second connection segment according to an embodiment of the present disclosure.

Reference numerals:

a battery assembly 100; a battery 1; a battery protection plate 2; a flexible circuit board 3;

a flexible section 30; a first connection section 301; a second connection segment 302; an intermediate section 303;

a first connector 31; a second connector 32;

the first chip 41; a second chip 42;

a pad 5; and a tin-permeable hole 51.

Detailed Description

Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present disclosure, and should not be construed as limiting the present disclosure.

A battery assembly 100 according to the disclosed embodiments is described below with reference to the drawings.

The battery assembly 100 according to the embodiment of the present disclosure includes: a battery 1, a battery protection plate 2 and a flexible circuit board 3. The battery protection plate 2 is connected to one end of the battery 1, the flexible circuit board 3 includes a flexible section 30 and two connectors respectively connected to two ends of the flexible section 30, the flexible section 30 extends along a length direction (up and down direction as shown by arrows) of the battery 1, the flexible section 30 is connected to the battery protection plate 2, and the connectors are adapted to be connected to the charging chip.

In order to make the present application easier to understand, the following describes the technical solution of the present application further by taking the case where the length direction of the battery 1 coincides with the up-down direction and the width direction of the battery 1 coincides with the left-right direction, which are shown in fig. 1.

For example, as shown in fig. 1, the battery protection plate 2 is an integrated circuit board for protecting the rechargeable battery 1, the battery protection plate 2 is connected to the upper end of the battery 1, the flexible circuit board 3 extends along the vertical direction, the flexible circuit board 3 includes a flexible section 30, a first connector 31 and a second connector 32, the vertical dimension of the flexible section 30 is greater than the vertical dimension of the battery 1, the first connector 31 is located at the upper end of the flexible section 30, the second connector 32 is located at the lower end of the flexible section 30, the flexible section 30 is electrically connected to the battery protection plate 2, the first connector 31 is connected to the first chip 41, and the second connector 32 is connected to the second chip 42.

It is understood that in other embodiments, the battery 1 plate guard may be connected to any one of the lower, left, and right ends of the battery 1.

In the related art, at one end of the battery 1, two flexible circuit boards 3 and the battery protection board 2 are simultaneously arranged in a narrow space, the two flexible circuit boards 3 are welded on the battery protection board 2, the positive and negative poles of the two flexible circuit boards 3 are both connected with the positive and negative poles of the battery protection board 2, the routing between the two flexible circuit boards 3 and the battery protection board 2 is densely arranged and linearly roundabout, for example, one electrode on the electric core of the battery 1 is an electrode a, one electrode of the battery protection board 2 is an electrode B, one electrode of the flexible circuit board 3 is an electrode C, both the electrode a and the electrode C are arranged on the left side of the electrode B, after the current flows from the electrode a to the electrode B along the direction from the left end to the right end of the battery protection board 2, the current flows from the electrode B to the electrode along the opposite direction (from the right end to the left end of the battery protection board 2), the paths taken by the current in the process are overlapped, the impedance of the wiring is increased, and the heat power consumption of the circuit is larger. In addition, since the two flexible circuit boards 3 are limited by the space of the battery protection board 2, the size of each flexible circuit board 3 is limited, and the internal resistance of the flexible circuit board 3 is large, thereby increasing power consumption.

In the embodiment of the present disclosure, the first connector 31 and the second connector 32 are simultaneously designed on one flexible circuit board 3, such an arrangement simplifies the design of the battery protection board 2 and the flexible circuit board 3, and the battery protection board 2 and the flexible circuit board 3 only need to be installed once, so the installation efficiency is high.

In addition, on one hand, the arrangement directions of the positive and negative electrodes of the first connector 31 and the second connector 32 are the same, for example, the left side of the first connector 31 is the positive electrode, and the right side of the first connector 31 is the negative electrode; the left end of the second connector 32 is a positive electrode, and the right end of the second connector 32 is a negative electrode. After the current starts from the positive electrode of the first connector 31 and the positive electrode of the second connector 32, the current reaches the negative electrode of the battery cell of the battery 1 through the battery protection plate 2, and then flows to the negative electrodes of the first connector 31 and the second connector 32 through the positive electrode of the battery cell respectively, the paths of the current walking on the flexible circuit board 3 in the whole process are not overlapped, the wiring arrangement is smooth, the wiring internal resistance is small, and the power consumption of the flexible circuit board 3 is low; on the other hand, the size of the flexible circuit board 3 in the left-right direction can be appropriately widened according to the requirement of the charging power, thereby reducing the power consumption.

Therefore, the battery assembly 100 according to the embodiment of the present disclosure has the advantages of high assembly efficiency, smooth wiring, low power consumption, and the like.

In some embodiments, flexible segment 30 includes a middle segment 303 and connecting segments connected to two ends of middle segment 303, respectively, for connecting with connectors.

In some embodiments, the connection segments extend beyond both ends of the battery 1 in the length direction.

In some embodiments, the length of at least one connection segment is greater than the distance between the middle segment 303 and the charging chip.

For example, as shown in fig. 1, the flexible segment 30 includes a middle segment 303, a first connection segment 301 and a second connection segment 302, the middle segment 303 is between the first connection segment 301 and the second connection segment 302, two ends of the middle segment 303 are respectively connected to one end of the first connection segment 301 and one end of the second connection segment 302, the other end of the first connection segment 301 is connected to the first connector 31, and the other end of the second connection segment 302 is connected to the second connector 32. The first connection segment 301 and the second connection segment 302 are located at both sides of the battery 1, the first connection segment 301 is disposed between the first connection head 31 and the upper end of the battery protection plate 2, and the second connection segment 302 is disposed between the second connection head 32 and the lower end of the battery 1.

As shown in fig. 3 and 4, the first connection section 301 is substantially V-shaped, and the length of the first connection section 301 after being unfolded is greater than the distance between the upper end of the battery protection plate 2 and the first connection head 31 (or the distance between one end of the middle section 303 and the adjacent charging chip), so that the first connection section 301 may have certain "elasticity", and this design can increase the movement space of the first connection section 301 in the up-down direction, reduce the pulling of mechanical vibration on the flexible circuit board 3, and protect the flexible circuit board 3.

In other embodiments, the second connector segment 302 is identical in structure to the first connector segment 301.

In some embodiments, intermediate section 303 is affixed to the outer surface of cell 1.

In some embodiments, the width of the flexible circuit board 3 is less than the width of the battery 1.

For example, as shown in fig. 1, the intermediate section 303 is attached to the outer surface of the battery 1. Thereby, the flexible circuit board 3 is fixed by the intermediate section 303, and the first and second connection heads 31 and 32 are prevented from moving.

The width of the flexible circuit board 3 is the size of the flexible circuit board 3 in the left and right directions, the width of the battery 1 is the size of the battery 1 in the left and right directions, and the width of the flexible circuit board 3 is smaller than that of the battery 1, so that the installation space does not need to be reserved for the flexible circuit board 3 independently in the left and right directions, the width of the flexible circuit board 3 is not limited, the flexible circuit board 3 can be widened appropriately according to the charging power requirement, the internal resistance of the flexible circuit board 3 is reduced, and the power consumption of the flexible circuit board 3 is reduced.

In the related art, two pads 5 are provided on the battery protection board 2, and the battery protection board 2 is connected to the two flexible circuit boards 3 through the two pads 5, so that the space utilization rate of the battery protection board 2 is low.

In some embodiments, the battery protection board further comprises a pad 5, and the flexible circuit board 3 is connected with the battery protection board 2 through the pad 5 in a welding mode.

For example, as shown in fig. 1, the upper end of the flexible segment 30 and the battery protection plate 2 are welded together by the welding pad 5, so that only one welding point needs to be designed on the battery protection plate 2, thereby saving the space of the battery protection plate 2.

In some embodiments, the pad 5 has a plurality of tin-through holes 51, and the plurality of tin-through holes 51 are spaced along the width direction of the flexible circuit board 3.

For example, as shown in fig. 2, the width direction of the circuit board is the left-right direction in the figure, and the pad 5 is provided with a plurality of tin-through holes 51, and the plurality of tin-through holes 51 are arranged at intervals along the left-right direction. Thus, the plurality of through-tin holes 51 introduce solder between the battery protection plate 2 and the flexible circuit board 3, and discharge air bubbles between the battery protection plate 2 and the flexible circuit board 3, thereby improving the soldering quality.

In some embodiments, the tin-through holes 51 are bar-shaped holes extending along the length direction of the flexible circuit board 3.

For example, as shown in fig. 2, the tin-through hole 51 is a bar-shaped hole extending in the up-down direction of the flexible circuit board 3.

It should be noted that, the flexible circuit board 3 in the related art is only arranged at one end of the battery protection board 2, and the contact area between the flexible circuit board 3 and the battery protection board 2 is relatively small, so that the requirement on the size of the tin through hole 51 in the length direction is low, and even the flexible circuit board 3 can be directly arranged as a round hole, while the contact area between the flexible circuit board 3 and the battery protection board 2 according to the embodiment of the disclosure is large, so that the tin can be uniformly introduced between the two, and therefore the tin through hole 51 is arranged as a strip-shaped hole.

According to the terminal of the embodiment of the present disclosure, the battery pack 100 of any one of the above embodiments is included.

For example, the terminal may be a mobile phone, a tablet, a wearable electronic device, and the like.

According to the terminal of the embodiment of the disclosure, the terminal has the advantages of high assembly efficiency, low power consumption and the like.

In the description of the present disclosure, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present disclosure and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present disclosure.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.

In the present disclosure, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In the present disclosure, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure, and that changes, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present disclosure.

Claims (10)

1. A battery assembly, comprising:

a battery;

a battery protection plate connected to one end of the battery;

the flexible circuit board, the flexible circuit board include the flexible section and respectively with two connectors that the flexible section both ends link to each other, the flexible section is followed the length direction of battery extends, just the flexible section with the battery protection shield links to each other, the connector is suitable for and links to each other with the chip that charges.

2. The battery assembly according to claim 1, wherein the flexible section comprises a middle section and connecting sections respectively connected with two ends of the middle section, and the connecting sections are used for connecting the connectors.

3. The battery pack of claim 2, wherein the connecting segments extend beyond both ends of the battery in the lengthwise direction.

4. The battery assembly of claim 2, wherein a length of at least one of the connection segments is greater than a distance between the intermediate segment and the charging chip.

5. The battery assembly of claim 2, wherein the intermediate section is affixed to an outer surface of the cell.

6. The battery assembly of claim 1, wherein the flexible circuit board has a width less than a width of the battery.

7. The battery pack of any of claims 1-6, further comprising a solder pad, wherein the flexible circuit board is solder connected to the battery protection board through the solder pad.

8. The battery pack of claim 7, wherein the solder pad has a plurality of solder holes formed therein, the plurality of solder holes being spaced apart along a width of the flexible circuit board.

9. The battery pack according to claim 8, wherein the tin-permeable hole is a strip-shaped hole extending along a length direction of the flexible circuit board.

10. A terminal, characterized in that it comprises a battery assembly according to any one of claims 1-9.

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