CN217428430U - Circuit board, battery and device with battery - Google Patents

Abstract

The utility model relates to a battery packaging technology field, concretely relates to circuit board, battery and have device of battery. Wherein, the circuit board includes: the PCB is suitable for being connected with the battery cell; at least two FPCs are arranged on the PCB, the FPCs are suitable for being connected with an external device, at least one of the FPCs comprises a first bending section, a second bending section and a third bending section, the first bending section is connected to the first surface of the PCB, the second bending section is connected with the first bending section and faces the middle of the PCB, the first bending section is located on the same side of the PCB, and the third bending section is connected with the second bending section and extends out of the PCB. The utility model provides a circuit board is favorable to realizing high-power charging, realizes dodging and fills, quick charge.

Description

Circuit board, battery and device with battery

Technical Field

The utility model relates to a battery packaging technology field, concretely relates to circuit board, battery and have device of battery.

Background

At present, in a conventional battery pack packaging scheme, a Printed Circuit Board (PCB) and a flexible printed circuit board (FPC) are welded by using a soft and hard board, and a single FPC has low current resistance, so that the conventional circuit board cannot meet the requirement of rapid charging along with the increasing requirement of charging a mobile phone.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that the circuit board among the prior art can't satisfy the quick charge requirement to a circuit board, battery and have device of battery are provided.

In order to solve the above technical problem, the utility model provides a pair of circuit board, include:

the PCB is suitable for being connected with the battery cell;

at least two FPCs are arranged on the PCB, the FPCs are suitable for being connected with an external device, at least one of the FPCs comprises a first bending section, a second bending section and a third bending section, the first bending section is connected to the first surface of the PCB, the second bending section is connected with the first bending section and faces the middle of the PCB, the first bending section is located on the same side of the PCB, and the third bending section is connected with the second bending section and extends out of the PCB.

Optionally, a connector is arranged on the FPC, and the connector is suitable for being buckled and connected with an external device.

The utility model also provides a battery, including electric core and the circuit board, electric core includes body and utmost point ear, be equipped with the connecting piece on the PCB of circuit board, the connecting piece with utmost point ear is connected.

Optionally, the battery further includes a rubber casing, the rubber casing is fixedly connected to the top end of the electric core, the PCB is disposed in the rubber casing, and at least a portion of the FPC extends out of the rubber casing.

Optionally, a flexible insulating member is disposed between the rubber casing and the battery cell.

Optionally, a first heat dissipation member is arranged at the tail end of the battery cell;

the top seal of electric core department is equipped with the second heat-dissipating piece, the second heat-dissipating piece with top seal insulation contact, the second heat-dissipating piece still with what glue the shell deviates from one side contact of FPC.

Optionally, the rubber casing and the top seal are covered with a third heat dissipation part, and the third heat dissipation part extends to the battery core.

Optionally, the first heat dissipation element and the third heat dissipation element are made of a material compounded by a polyimide film and a heat dissipation graphite sheet;

the second heat dissipation piece comprises a polyimide film layer and a heat dissipation graphite layer arranged on one side, far away from the top seal, of the polyimide film layer.

Optionally, an easy-to-tear sticker is pasted on the battery cell;

and/or the battery further comprises masking tape attached to the third heat sink.

The utility model also provides a device with battery, including foretell battery.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a circuit board, adopt soft or hard board connection technology with PCB and two at least FPCs simultaneously, stable performance, when this circuit board links to each other with electric core, be favorable to realizing high-power charging, realize dodging and filling, quick charge, and because at least one of them FPC includes first bending segment, the second bending segment, the third bending segment, FPC and PCB have great area of contact and the length of whole circuit board no longer than PCB's length, be convenient for link to each other this circuit board with electric core, the heat dissipation problem of FPC of large tracts of land when quick charge can effectual solution, thereby ensure to dispel the heat fast at quick charge's in-process, reduce the temperature rise.

2. The utility model provides a battery, because PCB links to each other with the utmost point ear of electric core, be connected with two at least FPC on the PCB, be favorable to realizing that high-power charging realizes dodging and fills, and the heat dissipation problem of FPC of large tracts of land can effectual solution battery when quick charge to ensure can dispel the heat fast at quick charge's in-process, reduce the battery temperature rise.

3. The utility model provides a battery, first radiating piece, second radiating piece and third radiating piece wrap up the temperature that makes its production to the part that generates heat of electricity core and distribute fast, reduce the temperature rise of battery, have promoted the life of battery.

4. The utility model provides a battery, the fixed FPC of beautiful line adhesive tape makes its installation lock more accurate. The package is easy to tear and stick, and is convenient to disassemble after sale; the double faced adhesive tape is attached, so that the whole battery can be better attached to a battery compartment of an external device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a circuit board provided in embodiment 1 of the present invention;

FIG. 2 is a rear view of FIG. 1;

FIG. 3 is a front view of FIG. 1;

fig. 4 is a schematic structural diagram of a battery provided in embodiment 2 of the present invention;

fig. 5 is a first exploded view of the battery shown in fig. 4;

FIG. 6 is a schematic structural view of a battery with a masking tape;

fig. 7 is a second exploded view of the battery shown in fig. 4;

fig. 8 is a schematic view of the first heat sink being unfolded;

fig. 9 is a schematic view of the second heat sink being unfolded;

fig. 10 is a schematic view illustrating the third heat sink being unfolded;

FIG. 11 is a schematic view of the FPC when it is not bent;

FIG. 12 is a schematic view of a separate PCB;

fig. 13 is a schematic view of the FPC mounted on the PCB without bending.

Description of the reference numerals:

1. an electric core; 11. top sealing; 2. a PCB; 21. a connecting member; 22. a thermistor; 3. FPC; 301. a first bending section; 302. a second bending section; 303. a third bending section; 4. a rubber shell; 41. a first double-sided adhesive; 5. a flexible insulating member; 61. a first heat sink; 62. a second heat sink; 63. a third heat sink; 7. masking tape; 8. a second double-sided adhesive; 9. easy to tear and stick.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The embodiment provides a circuit board.

In one embodiment, the circuit board includes a PCB2 and at least two FPCs 3. The PCB2 is suitable for being connected with the battery cell 1; at least two FPCs 3 are arranged on the PCB2, the FPCs 3 are suitable for being connected with an external device, at least one FPC3 comprises a first bending section 301, a second bending section 302 and a third bending section 303, the first bending section 301 is connected to a first face of the PCB2, the second bending section 302 is connected with the first bending section 301 and extends towards the middle of the PCB2, the first bending section 301 and the second bending section 302 are located on the same side of the PCB2, and the third bending section 303 is connected with the second bending section 302 and extends out of the PCB 2.

In this embodiment, adopt soft or hard board connection technology with PCB and at least two FPC simultaneously, stable performance, when this circuit board links to each other with electric core, be favorable to realizing high-power charging, the realization is dodged and is filled, quick charge, and because at least one of them FPC includes first bending segment 301, second bending segment 302, third bending segment 303, FPC and PCB have great area of contact and the length of whole circuit board is no longer than PCB's length, be convenient for link to each other this circuit board with electric core, the heat dissipation problem when quick charge can effectual solution of large tracts of land FPC, thereby ensure can dispel the heat fast at quick charge's in-process, reduce the temperature rise.

As shown in fig. 1 to 3, in a preferred embodiment, the circuit board includes two FPCs 3, two FPCs 3 are symmetrically disposed, and each FPC3 includes a first bending section 301, a second bending section 302, and a third bending section 303. Of course, in other alternative embodiments, the circuit board may include 3 or more than 3 FPCs, and in this embodiment, one of the FPCs may be bent, two of the FPCs may be bent, or each of the FPCs may be bent. In an alternative embodiment, the circuit board includes two FPCs 3, only one of which, FPC3, includes first bend 301, second bend 302, and third bend 303, while the other is not bent. When the FPCs are not bent as shown in fig. 11, and the separate PCBs are shown in fig. 12, and with reference to fig. 13, when both FPCs are directly connected to the PCB2 without bending, it is obvious that the length of the whole circuit board is relatively large, and therefore, at least when the FPCs are bent, the length of the whole circuit board is reduced, which is convenient for the circuit board to be assembled in the whole machine.

With further reference to fig. 1, in a preferred embodiment, the third bend 303 is perpendicular to the PCB.

The FPC3 is connected to the PCB2 by soldering. Electronic components are attached to the PCB 2.

In addition to the above embodiments, in a preferred embodiment, a connector is provided on the FPC3, and the connector is adapted to be snap-fit connected to an external device. In this embodiment, the connector is provided to facilitate quick assembly with an external device. It should be noted that the external device may be a complete machine.

Example 2

The present embodiment provides a battery, which includes a battery cell 1 and the circuit board provided in the foregoing embodiments.

In one embodiment, as shown in fig. 4 to 7, the battery cell 1 includes a body and tabs; the PCB2 of the circuit board is provided with a connecting piece 21, and is connected with the pole ear through the connecting piece 21. In the embodiment, the PCB is connected with the tabs of the battery cell, and the PCB2 and the at least two FPCs 3 are connected by soft and hard plates, so that the performance is stable, the high-power charging of the battery can be realized, the flash charging can be realized, the large-area FPC3 can effectively solve the heat dissipation problem of the battery, and the temperature rise of the battery can be reduced; in the traditional quick charging project, the width of the PCB2 board is designed to be more than 6mm, the packaging space requirement of the whole machine is large, the battery capacity cannot be improved, the phenomenon that the temperature rise exceeds the specification is easily generated, and the packaging space requirement of the whole machine is reduced by the implementation mode.

In addition to the above embodiments, in a preferred embodiment, as shown in fig. 1 to 3 and 5, the thermistor 22 is connected to the PCB2 through a lead wire, and the thermistor 22 and the main body are bonded together through a heat conductive silicone. In this embodiment, the thermistor 22 is arranged to monitor the temperature of the battery cell 1 in real time and protect the battery accordingly.

On the basis of the above embodiments, in a preferred embodiment, the connecting member 21 is a nickel plate attached to the PCB2, and the nickel plate and the tab are connected by laser spot welding.

On the basis of the above embodiments, in a preferred embodiment, as shown in fig. 5 and 7, the battery further includes a rubber casing 4, the rubber casing 4 is fixedly connected to the top end of the electric core 1, the PCB2 is disposed in the rubber casing 4, and at least a portion of the FPC3 is disposed to extend out of the rubber casing 4. In this embodiment, glue shell 4 can fix a position PCB2 and FPC3 fixed, and glue shell 4 can let the heat that electricity core 1 produced conduct away more fast, accelerates thermal scattering to play the effect of protection to PCB2 and FPC3 when the battery falls.

Specifically, in one embodiment, a top seal 11 is disposed at the top end of the battery cell 1, and the rubber casing 4 is fixedly connected to the top seal 11.

Specifically, in one embodiment, the rubber case 4 is fixed to the top seal 11 by the first double-sided adhesive 41. In an alternative embodiment, the glue shell 4 is fixed to the top seal 11 by gluing.

In addition to the above embodiments, in a preferred embodiment, a flexible insulating member 5 is provided between the rubber casing 4 and the body of the battery cell 1. In this embodiment, a flexible insulating member 5 is disposed between the contact surfaces of the rubber casing 4 and the battery cell 1 to perform an insulating function and protect the battery cell 1.

On the basis of the above embodiments, in a preferred embodiment, the flexible insulating member 5 is silicone.

On the basis of the above embodiments, in a preferred embodiment, the tail end of the battery cell 1 is provided with the first heat sink 61. Combine fig. 7 and 8, first heat dissipation piece 61 initial shape is the slice, buckles and completely covers the tail end of battery when the assembly, and first heat dissipation piece 61 parcel electric core 1 afterbody makes it insulating to take away the heat that electric core 1 produced, reduce the heat of electric core 1 afterbody.

In addition to the above embodiments, in a preferred embodiment, the first heat sink 61 is made of a composite material of a polyimide film and a graphite heat sink sheet. In this embodiment, the polyimide film has the insulating effect of high temperature resistance, and the heat dissipation graphite flake has high heat conduction high reliability, frivolous, good characteristics such as easy processing, environmental protection, compounds both, and the solution battery that can be quick dodges the heat that charges the production, improves the life of product.

On the basis of the above embodiment, in a preferred embodiment, the top seal 11 of the battery cell 1 is provided with a second heat dissipation member 62, the second heat dissipation member 62 is in insulated contact with the top seal 11, and the second heat dissipation member 62 is also in contact with the side of the rubber casing 4 away from the FPC 3. In this embodiment, with reference to fig. 7 and 9, the second heat dissipation member 62 is initially shaped like a sheet, and is bent during assembly to completely cover the top seal 11, so that the second heat dissipation member 62 can take away heat at the top end of the battery cell 1, thereby further improving the heat dissipation capability of the battery cell 1.

In addition to the above embodiments, in a preferred embodiment, the second heat sink 62 includes a polyimide film layer and a heat dissipation graphite layer disposed on a side of the polyimide film layer away from the top seal 11. In this embodiment, the polyimide film layer is insulated from the top seal 11 of the battery cell 1, so as to prevent the battery cell 1 from leaking aluminum and generating micro short circuit with the outside, and the heat dissipation graphite layer is arranged on one side of the polyimide film layer away from the top seal 11, so as to take away the heat generated by the battery cell 1 and prolong the service life of the product.

On the basis of the above embodiments, in a preferred embodiment, the rubber casing 4 and the top seal 11 are covered with a third heat dissipation member 63, and the third heat dissipation member 63 extends to the battery core 1. In this embodiment, the third heat sink 63 covers the rubber casing 4 and the top seal 11, and extends to the battery core 1, so as to fix the PCB2 and the FPC3, and enable heat generated by a large current passing through the PCB2 and the FPC3 to be rapidly dissipated to the surface of the battery, thereby reducing the temperature.

Specifically, in one embodiment, with reference to fig. 7 and 10, the third heat dissipation element 63 is initially shaped like a sheet, and is bent as needed during assembly, and the bent third heat dissipation element 63 has a top surface, a first side surface and a second side surface, wherein the top surface covers the top ends of the rubber case 4 and the top seal 11; the first side covers the back of the top seal 11; the second side covers the rubber casing 4 and extends to the body of the battery cell 1, and the FPC3 abuts against the second side.

In addition to the above embodiments, in a preferred embodiment, the third heat sink 63 is made of a composite material of a polyimide film and a graphite heat sink sheet. In this embodiment, the polyimide film has the insulating effect of high temperature resistance, and the heat dissipation graphite flake has high heat conduction high reliability, frivolous, good characteristics such as easy processing, environmental protection, compounds both, and the solution battery that can be quick dodges the heat that charges the production, improves the life of product.

In addition to the above embodiments, in a preferred embodiment, the battery further includes a masking tape 7 attached to the third heat dissipation member 63. In this embodiment, the masking tape 7 fixes the FPC3, so that the fitting process is more accurate.

In addition to the above embodiments, in a preferred embodiment, the second double-sided adhesive 8 is attached to the battery cell 1. In this embodiment, the second double-sided adhesive 8 enables the entire battery to be better attached in the battery compartment of the external device.

Specifically, in one embodiment, one side of the second double-sided adhesive 8 is adhered to the battery cell 1, and the other side is adhered with a release liner.

In addition to the above embodiments, in a preferred embodiment, the easy-to-tear tape 9 is attached to the battery cell 1. In this embodiment, the peel-off sticker 9 facilitates the post-sale repair and removal of the battery.

Example 3

The present embodiment provides a device having a battery, including the battery provided in embodiment 1.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims (10)

1. A circuit board, comprising:

the PCB (2), the said PCB (2) is suitable for connecting with electric core (1);

at least two FPCs (3), locate on PCB (2), FPC (3) are suitable for and are connected with external device, at least one of them FPC (3) include first bending segment (301), second bending segment (302) and third bending segment (303), first bending segment (301) are connected on the first face of PCB (2), second bending segment (302) with first bending segment (301) link to each other and face the middle part of PCB (2) extends, first bending segment (301) with second bending segment (302) are located same one side of PCB (2), third bending segment (303) with second bending segment (302) link to each other and stretch out PCB (2).

2. A circuit board according to claim 1, characterized in that the FPC (3) is provided with a connector adapted to snap-fit connection with an external device.

3. A battery, characterized by comprising a battery cell (1) and the circuit board of any one of claims 1-2, wherein the battery cell (1) comprises a body and a tab, and a connecting member is arranged on the PCB (2) of the circuit board, and the connecting member is connected with the tab.

4. The battery according to claim 3, wherein the battery further comprises a rubber casing (4), the rubber casing (4) is fixedly connected to the top end of the battery core (1), the PCB (2) is arranged in the rubber casing (4), and at least part of the FPC (3) extends out of the rubber casing (4).

5. The battery according to claim 4, characterized in that a flexible insulating member (5) is arranged between the rubber casing (4) and the battery core (1).

6. The battery according to claim 4 or 5, characterized in that the tail end of the battery core (1) is provided with a first heat dissipation member (61);

the battery is characterized in that a second heat dissipation piece (62) is arranged at the top seal (11) of the battery core (1), the second heat dissipation piece (62) is in insulated contact with the top seal (11), and the second heat dissipation piece (62) is further in contact with one side of the rubber shell (4) deviating from the FPC (3).

7. The battery according to claim 6, characterized in that the glue shell (4) and the top seal (11) are covered with a third heat dissipation member (63), and the third heat dissipation member (63) extends to the battery core (1).

8. The battery according to claim 7, wherein the first heat dissipation member (61) and the third heat dissipation member (63) are made of a polyimide film and a heat dissipation graphite sheet;

the second heat dissipation piece (62) comprises a polyimide film layer and a heat dissipation graphite layer arranged on one side, far away from the top seal (11), of the polyimide film layer.

9. The battery according to claim 7 or 8, characterized in that the electric core (1) is adhered with an easy-to-tear sticker (9);

and/or the battery further comprises a masking tape (7) attached to the third heat dissipation member (63).

10. A device having a battery, comprising the battery of any one of claims 3-9.

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