CN105281065B - The battery connecting construction of electronic product and its electronic product of application - Google Patents

Abstract

The invention relates to the field of electronic technology, in particular to a battery connection structure of an electronic product and the electronic product to which it is applied. The battery connection structure of the electronic product includes a main board of the electronic product, a flexible circuit board electrically connected to the battery, a conductive sheet is interposed between the flexible circuit board and the main board, and the flexible circuit board is electrically connected to the main board of the electronic product through the conductive sheet. connection to allow the battery to supply power to the motherboard of the electronic product. The above-mentioned electronic product includes a battery connection structure, and the battery connection structure is a battery connection structure of the above-mentioned electronic product. The battery connection structure of the electronic product disclosed in the present invention and the electronic product used in the electronic product use the conductive sheet to replace the snap-fit battery connector used in the prior art. On the one hand, the thickness of the electronic product can be reduced, so that the electronic product can be made Thinner; on the other hand, the connection structure is simpler and the manufacturing cost of electronic products can be reduced.

Description

Battery connection structure for electronic products and electronic products for its application

technical field

The invention relates to the field of electronic technology, in particular to a battery connection structure of an electronic product and the electronic product to which it is applied.

Background technique

Existing electronic products with built-in batteries, such as computers, communications and consumer electronics products (ie 3C products), generally use snap-fit battery connectors, such as board-to-board connectors (ie, BTB connectors), which connect the battery leads The flexible circuit board is electrically connected to the main board of the electronic product, so that the battery supplies power to the main board of the electronic product.

The connection between the traditional battery and the main board of the electronic product is assembled through a snap-fit board-to-board connector, and then pre-pressed by foam and the shell; as shown in Figure 4, the battery connector of the existing electronic product realizes the battery 111 It is electrically connected with the main board 107 of the electronic product. As shown in Figure 2, the structure of the battery connector mainly includes a male seat 105 and a female seat 106; , a reinforcement plate 103, a flexible circuit board 104 from the battery, bolts 108, a mounting post 109 with screw holes, and an LCM stainless steel bracket 110; wherein the male seat 105 of the battery connector is arranged on the flexible circuit board 104 from the battery, The female seat 106 of the battery connector is arranged on the main board 107 of the electronic product, and the housing 101 is locked on the main board 107 of the electronic product through the screw fit of the bolt 108 and the mounting post 109 .

The materials and thicknesses of the main components of the battery connection structure of the above-mentioned electronic products are as follows: 1. The shell is usually made of stainless steel and plastic, the thickness of stainless steel is ≥0.25mm, and the thickness of plastic is ≥0.5mm; 2. The material of the pre-pressed part is usually foam Cotton and silica gel, the thickness of the two materials is ≥ 0.25mm; 3. The material of the reinforcing plate is usually stainless steel and FR4 reinforcing plate, the thickness of stainless steel is ≥ 0.2mm, and the thickness of FR4 reinforcing plate is ≥ 0.3mm; 4. The flexible circuit drawn from the battery The board (that is, the flexible circuit board electrically connected to the battery) is the conductor drawn from the battery pole piece (the battery pole piece generally includes positive and negative poles, and may also include a detection pole), and the material thickness is ≥ 0.15mm; 5. Board-to-board connector Connect the flexible circuit board and the main board of the electronic product through the male seat and the female seat, and the thickness of the board-to-board connector is ≥1.0mm. Therefore, the entire battery connection structure has a large space (usually the thickness is not less than 1.8mm), resulting in a large thickness of the electronic product, which does not meet the user's requirements for ultra-thin mobile terminals.

Contents of the invention

In order to overcome the problem of large thickness of the electronic product caused by the snap-fit battery connector in the prior art, the embodiment of the present invention provides a battery connection structure of the electronic product on the one hand, including the main board of the electronic product, and the electrical connection of the battery. For the connected flexible circuit board, a conductive sheet is interposed between the flexible circuit board and the main board, and the flexible circuit board is electrically connected to the main board through the conductive sheet so that the battery supplies power to the main board.

On the other hand, an embodiment of the present invention also provides an electronic product, including a battery connection structure, the battery connection structure includes a main board of the electronic product, a flexible circuit board electrically connected to the battery, the flexible circuit board and the main board of the electronic product A conductive sheet is interposed therebetween, and the flexible circuit board is electrically connected to the main board of the electronic product through the conductive sheet so that the battery supplies power to the main board of the electronic product.

The battery connection structure of the electronic product provided by the embodiment of the present invention uses a conductive sheet to replace the snap-fit battery connector used in the prior art. On the one hand, the thickness of the electronic product can be reduced, so that the electronic product can be made thinner; On the one hand, the connection structure is simplified and the manufacturing cost of electronic products can be reduced.

The electronic product provided by the embodiment of the present invention applies the battery connection structure of the above-mentioned electronic product. On the one hand, the thickness of the electronic product can be reduced, so that the electronic product can be made thinner; on the other hand, the connection structure is simpler and the electronic product can be reduced. manufacturing cost.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings that need to be used in the description of the embodiments. The drawings in the following description are only some embodiments of the present invention. Ordinary technicians can also obtain other drawings based on these drawings on the premise of not paying creative work.

FIG. 1 shows a schematic cross-sectional structure diagram of a battery connection structure of an existing electronic product;

Figure 2 shows a schematic structural view of an existing battery connector;

Fig. 3 is a partially enlarged view of part A of Fig. 1;

FIG. 4 shows a schematic diagram of a battery connection structure of an existing electronic product;

FIG. 5 shows a schematic perspective view of a conductive sheet according to Embodiment 1 of the present invention;

FIG. 6 shows a schematic diagram of an orthographic projection of a conductive sheet according to Embodiment 1 of the present invention;

Fig. 7 is the B-B sectional view of Fig. 6;

Fig. 8 is a C-C sectional view of Fig. 6;

Fig. 9 shows a schematic cross-sectional structure diagram 1 of Embodiment 1 of the present invention;

Fig. 10 is a partial enlarged view of part D of Fig. 9;

Figure 11 is an exploded schematic diagram of Figure 10;

Fig. 12 shows the second schematic cross-sectional structure of the first embodiment of the present invention;

FIG. 13 shows a schematic structural diagram of Embodiment 1 of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

In the description of the present invention, unless otherwise specified, "plurality" means two or more.

Embodiment one:

Embodiment 1 of the present invention provides a battery connection structure of an electronic product, including a main board 1 of the electronic product, a battery 2, and a flexible circuit board 3 electrically connected to the battery 2 (as shown in FIG. 13 ). The flexible circuit board 3 A conductive sheet 4 is sandwiched between the main board 1 (as shown in FIG. 12 ), and the flexible circuit board 3 is electrically connected to the main board 1 through the conductive sheet 4 so that the battery 2 supplies power to the main board 1 of the electronic product.

Further, the battery connection structure of the above-mentioned electronic product also includes a reinforcement board 5, and the above-mentioned flexible circuit board 3 and the conductive sheet 4 are located between the reinforcement board 5 and the main board 1 of the electronic product; the reinforcement board is preferably an FR4 reinforcement board , with a thickness of ≥0.3 mm, which mainly serves to increase the strength of the flexible circuit board, and can also effectively insulate between the head of the bolt 7 and the flexible circuit board 3 . As shown in FIG. 10 , in a preferred embodiment of the present invention, the above-mentioned reinforcing plate 5 , flexible circuit board 3 , conductive sheet 4 and the main board 1 of the electronic product are arranged sequentially from top to bottom or bottom to top.

Further, the main board 1 of the above-mentioned electronic product is also fixedly provided with a conductive seat 6, the conductive seat 6 is electrically connected with the main board 1 of the electronic product, and the conductive seat 6 is provided with a screw hole 61, and the screw hole 61 has an internal thread (Fig. 11 not shown).

Specifically, as shown in Figure 11, the above-mentioned reinforcing plate 5 is provided with a reinforcing plate through hole 51, the flexible circuit board 3 is provided with a flexible circuit board through hole 31, and the above-mentioned conductive sheet 4 is provided with a conductive sheet through hole 41 (as shown in FIG. 8), the conductive seat 6 is provided with a screw hole 61, and the above-mentioned reinforcing plate through hole 51, the flexible circuit board through hole 31, the conductive sheet through hole 41 and the screw hole 61 of the conductive seat are connected;

The conductive seat 6 is equipped with a bolt 7, the material of the bolt 7 is preferably stainless steel or other metals, mainly for fastening, and its thickness is 0.25-1.0mm, and the rod portion 71 of the bolt 7 passes through the through hole of the reinforcing plate in turn 51. The through hole 31 of the flexible circuit board and the through hole 41 of the conductive sheet are screwed into the screw hole 61 of the conductive seat, and the head 72 of the bolt 7 is pressed against the reinforcing plate 5; the material of the conductive seat 6 is preferably Copper, with a thickness of 0.1-5mm, mainly plays the role of conduction and fastening. The reinforcement board 5, the flexible circuit board 3 and the conductive sheet 4 are locked on the main board 1 of the electronic product through the threaded cooperation between the bolt 7 and the screw hole 61 of the conductive seat. Above; in this embodiment, the bolt 7 is directly used to lock the conductive seat 6 on the main board to ensure good contact between the conductive sheet 4 and the conductive seat 6, thereby ensuring the reliability of the electrical contact between the through hole 31 of the flexible circuit board and the main board 1

The side 42 of the conductive sheet 4 facing the flexible circuit board is attached to the flexible circuit board 3 and is electrically connected to the flexible circuit board 3 ; the side 43 of the conductive sheet 4 facing away from the flexible circuit board is electrically connected to the conductive seat 6 . The threaded cooperation between the bolt 7 and the conductive seat 6 can ensure that the flexible circuit board 3, the conductive sheet 4 and the conductive seat 6 have good conductive contact, so that the reliability of the current transmission between the battery 2 and the main board 1 of the electronic product is better; and, the bolt 7. The way of threaded cooperation with the conductive seat 6 will not deform the main board 1 of the electronic product and improve the stability of the product.

Specifically, as shown in FIG. 11 , the motherboard 1 of the above-mentioned electronic product is provided with a motherboard through-hole 11 , wherein the side 12 faces away from the flexible circuit board, and the side 13 faces the flexible circuit board. The above-mentioned conductive seat 6 includes a rod portion 62 of the conductive seat and a head portion 63 of the conductive seat, the head portion 63 of the conductive seat is arranged at one end of the rod portion 62 of the conductive seat, and the other end of the rod portion 62 of the conductive seat extends into the through hole of the main board 11 and is electrically connected to the side 43 of the conductive sheet 4 facing away from the flexible circuit board; the head 63 of the conductive seat is pressed against the side 12 of the main board of the electronic product facing away from the flexible circuit board, so that the conductive seat 6 and the electronic product The motherboard 1 is electrically connected. In this embodiment, only the length of the rod portion 62 of the conductive seat is shown in the accompanying drawings to be substantially equal to the depth of the main board through hole 11 (because the main board through hole 11 is through the main board 1 of the electronic product, the depth of the main board through hole 11 That is, the thickness of the motherboard 1 of the electronic product), however, the length of the rod portion 62 of the conductive seat can also be greater or shorter than the depth of the through hole 11 of the motherboard.

Further, as shown in Fig. 5, Fig. 6 and Fig. 7, the surface 43 of the above-mentioned conductive sheet facing away from the flexible circuit board is provided with a plurality of first bumps 44 arranged at intervals around the centerline of the through hole 41 of the conductive sheet, In particular, the plurality of first bumps 44 are arranged in an equally divided circle; the above-mentioned first bumps 44 are pressed against the end surface 621 of one end of the rod portion 62 of the conductive seat extending into the through hole 11 of the main board (as shown in Figure 11 shown), so that the conductive sheet 4 is electrically connected to the conductive seat 6. In this embodiment, only four first bumps 44 are shown in the figure; however, the number of first bumps 44 may be more or less than the number shown, for example, the number of first bumps 44 is one.

Further, as shown in Fig. 5, Fig. 6 and Fig. 8, the side 43 of the above-mentioned conductive sheet facing away from the flexible circuit board is also provided with a plurality of second bumps 45 circumferentially spaced around the center line of the through hole 41 of the conductive sheet , especially, a plurality of second bumps 45 are arranged in an equally divided circle, and the above-mentioned second bumps 45 are pressed against the side 13 of the main board of the electronic product facing the flexible circuit board (as shown in FIG. 12 ), so as to conduct electricity The sheet 4 is electrically connected to the main board 1 of the electronic product, so that the conductive sheet can play a dual insurance role of being in electrical contact with the main board and the conductive seat of the electronic product at the same time. In this embodiment, only two second bumps 45 are shown in the figure; however, the number of second bumps 45 may be more or less than the number shown, for example, the number of second bumps 45 is one. The distance between the first bump 44 and the centerline of the through hole of the conductive sheet may be smaller than the distance between the second bump 45 and the centerline of the through hole of the conductive sheet.

Specifically, the material of the above-mentioned conductive sheet 4 is preferably copper, which mainly plays a conductive role; in a preferred embodiment of the present invention, the conductive sheet 4 is in the form of a thin sheet with a thickness of 0.1-0.5mm, which is thicker than the existing snap-fit The thickness of the battery connector should be small, which can reduce the thickness of the whole electronic product.

Further, the conductive sheet 4, the bolt 7, and the conductive seat 6 are all made of metal, and the conductive seat 6 is a conductive nut. Preferably, the material of the conductive sheet 4, the bolt 7, and the conductive seat 6 is copper, and the reinforcing plate 5 is an FR4 reinforcing plate;

Further, the side 42 of the conductive sheet 4 facing the flexible circuit board is welded on the flexible circuit board 3 by SMT, and the conductive seat 6 is welded on the main board 1 of the electronic product by surface mount method (SMT). The assembly process can be as follows: first, solder the conductive seat 6 on the main board 1 of the electronic product by surface mounting, then paste the conductive sheet 4 on the flexible circuit board 3, and finally lock the bolt 7 and the conductive seat 6 directly Together; through the direct contact between the conductive sheet 4 and the conductive seat 6, the electrical performance of good contact between the flexible circuit board 3 and the main board 1 of the electronic product is ensured.

Further, as shown in FIG. 9 , the above-mentioned flexible circuit board 3 leads to a positive electrode 21 of a battery and a negative electrode 22 of a battery, with a thickness of 0.06-0.3 mm;

Specifically, a conductive sheet 4, a conductive seat 6 and a bolt 7 form a set of polarity connection components M, and each set of polarity connection components M is equipped with a reinforcing plate through hole 51, a flexible circuit board through hole 31 and a The through hole 41 of the conductive sheet, the rod portion 71 of the bolt 7 of a set of polarity connection assembly M passes through the through hole 51 of the reinforcing plate corresponding to the set of polarity connection assembly M, the through hole 31 of the flexible circuit board and the conductive sheet The through hole 41 is screwed into the screw hole 61 of the conductive seat of the set of polarity connection assembly M;

The above-mentioned positive pole 21 of the battery 2 and the negative pole 22 of the battery are each equipped with a set of polarity connecting components M.

The flexible circuit board 3 also leads to a detection pole 23, which can be used to detect and identify whether the battery is an original battery, can also be used to detect and identify the battery power curve, and can even be used for other detection purposes.

Further, the detection pole 23 is also equipped with a set of polarity connection components M.

The above-mentioned three sets of polarity connection components M supporting the positive pole 21, the negative pole 22 and the detection pole 23 are arranged in the shape of a "one" at intervals.

The battery connection structure of the electronic product provided by the embodiment of the present invention uses a conductive sheet to replace the snap-fit battery connector, so that the electrical connection performance between the flexible circuit board drawn from the battery and the main board is better, and the thickness of the entire battery connection structure is also reduced ( ≤0.9mm), the thickness space is more than 50% less than the traditional battery connector connection), so that electronic products can be made thinner; and the battery connection structure is simpler, which greatly reduces the manufacturing cost of electronic products.

Embodiment two:

Embodiment 2 of the present invention provides an electronic product, including a battery connection structure. The battery connection structure is the battery connection structure of the electronic product described in Embodiment 1. For the specific structure of the battery connection structure of the electronic product, refer to Embodiment 1. Here will not be described in detail.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (10)

1. A battery connection structure of an electronic product, comprising a main board of the electronic product, a flexible circuit board electrically connected to the battery, a conductive sheet is sandwiched between the flexible circuit board and the main board, and the flexible circuit board passes through the conductive sheet It is electrically connected with the main board so that the battery supplies power to the main board; it is characterized in that, It also includes a reinforcing plate and a conductive seat electrically connected to the main board, and the conductive seat is equipped with bolts; The reinforcing plate is provided with a reinforcing plate through hole, the flexible circuit board is provided with a flexible circuit board through hole, the conductive sheet is provided with a conductive sheet through hole, and the conductive seat is provided with a screw hole; The shank of the bolt passes through the through hole of the reinforcing plate, the through hole of the flexible circuit board and the through hole of the conductive sheet in turn and is screwed into the screw hole of the conductive seat, and the head of the bolt is pressed against the reinforcing plate. board. 2. The battery connection structure of an electronic product as claimed in claim 1, characterized in that, The conductive sheet is provided with one or more first bumps, and the first bumps press against the conductive seat to electrically connect the conductive sheet to the conductive seat. 3. The battery connection structure of an electronic product as claimed in claim 2, characterized in that, The main board is provided with main board through holes; The conductive seat includes a rod portion of the conductive seat and a head portion of the conductive seat, the head portion of the conductive seat is arranged at one end of the rod portion of the conductive seat, and the other end of the rod portion of the conductive seat extends into the through hole of the main board to conduct electricity. The head of the seat is pressed against the side of the main board facing away from the flexible circuit board so that the conductive seat is electrically connected to the main board, and the first bump is pressed against the rod of the conductive seat and extends into the through hole of the main board on one end. 4. The battery connection structure of an electronic product according to claim 3, wherein the number of the first bumps is multiple, and the plurality of first bumps are circumferentially spaced around the center line of the through hole of the conductive sheet . 5. The battery connection structure of an electronic product according to any one of claims 1 to 4, characterized in that, The conductive sheet is provided with one or more second bumps, and the second bumps press against the main board to electrically connect the conductive sheet to the main board. 6. The battery connection structure of an electronic product as claimed in claim 1 or 2 or 3 or 4, characterized in that, The thickness of the bolt is 0.25-1.0mm, the thickness of the conductive seat is 0.1-5mm, the thickness of the conductive sheet is 0.1-0.5mm, and the thickness of the flexible circuit board is 0.06-0.3mm. 7. The battery connection structure of an electronic product as claimed in claim 1 or 2 or 3 or 4, characterized in that, The conductive seat is a conductive copper nut, and the material of the conductive sheet and the bolt is copper. 8. The battery connection structure of an electronic product as claimed in claim 1 or 2 or 3 or 4, characterized in that, A positive pole of a battery and a negative pole of a battery lead out from the flexible circuit board, One said conductive sheet, one said conductive seat and one said bolt form a set of polar connection components, The positive pole of the battery and the negative pole of the battery are each equipped with a set of the polarity connection assembly. 9 . The battery connection structure for electronic products according to claim 8 , wherein a detection pole is led out from the flexible circuit board, and the detection pole is equipped with a set of the polarity connection components. 10 . 10. An electronic product, comprising a battery connection structure, characterized in that the battery connection structure is the battery connection structure of an electronic product according to any one of claims 1-9.