CN221282195U - Battery protection board, battery assembly and electronic equipment - Google Patents
Battery protection board, battery assembly and electronic equipment Download PDFInfo
- Publication number
- CN221282195U CN221282195U CN202322607210.4U CN202322607210U CN221282195U CN 221282195 U CN221282195 U CN 221282195U CN 202322607210 U CN202322607210 U CN 202322607210U CN 221282195 U CN221282195 U CN 221282195U
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- circuit board
- groove
- battery protection
- protection plate
- battery
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- 238000005476 soldering Methods 0.000 claims description 15
- 229910000679 solder Inorganic materials 0.000 abstract description 41
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The embodiment of the application provides a battery protection plate, a battery assembly and electronic equipment. The battery protection plate includes: a first circuit board and a land; the connecting disc comprises a first side and a second side which are arranged away from each other, and a third side and a fourth side which are arranged away from each other, wherein the first side is connected with the first circuit board; the third side is provided with a first groove recessed towards the fourth side, the first groove extends from the first side to the second side, the fourth side is provided with a second groove recessed towards the third side, and the second groove extends from the first side to the second side. Like this for the solder paste can flow along the direction of first side to the second side through first recess and second recess, has increased the area of contact of solder paste and connection pad, thereby makes first circuit board have better connection steadiness. The method has the advantages that the problem that solder paste is difficult to fill in the via holes on the connecting disc because of the round holes with smaller sizes is avoided, so that the solder paste is easier to emerge from the connecting disc, the risk of poor tin emerging is reduced, the first circuit board is tightly connected, and better connection reliability is achieved.
Description
Technical Field
The application belongs to the technical field of batteries, and particularly relates to a battery protection plate, a battery assembly and electronic equipment.
Background
The battery protection board is arranged in the battery assembly and is used for protecting the battery cells of the battery assembly in the charge and discharge process, and is important.
In the prior art, a battery protection plate includes a soft plate and a hard plate connected together by welding. The solder pad is arranged on the soft board, the via hole is arranged in the middle of the solder pad, the solder paste is arranged on the hard board, and the solder paste on the hard board overflows from the via hole in the middle of the solder pad of the soft board by adopting a reflow soldering process, so that the welding between the soft board and the hard board is realized.
However, since the via hole on the bonding pad is usually a round hole with smaller size, the solder paste is not easy to overflow from the via hole, and there is a risk of poor tin emission, resulting in poor connection between the soft board and the hard board and poor reliability.
Disclosure of utility model
The present utility model has been made in view of the above problems, and has as its object to provide a battery protection plate, a battery assembly and an electronic device which overcome or at least partially solve the above problems.
In order to solve the technical problems, the application is realized as follows:
In a first aspect, an embodiment of the present application proposes a battery protection plate, including: a first circuit board and a land;
The connection pad comprises a first side and a second side which are arranged away from each other, and a third side and a fourth side which are arranged away from each other, wherein the first side is connected with the first circuit board;
The third side is provided with a first groove recessed towards the fourth side, the first groove extends from the first side to the second side, the fourth side is provided with a second groove recessed towards the third side, and the second groove extends from the first side to the second side.
Optionally, the first groove and the second groove are oppositely arranged, and the connecting disc is in an i-shaped structure.
Optionally, the number of the first grooves includes a plurality of first grooves parallel to the third side, the number of the second grooves includes a plurality of second grooves parallel to the fourth side.
Optionally, the shape of the projection of the first groove along the first side to the second side direction is circular arc or rectangular, and the shape of the projection of the second groove along the first side to the second side direction is circular arc or rectangular.
Optionally, the number of the lands includes a plurality, and the plurality of lands are arranged on the first circuit board at intervals.
Optionally, the battery protection board further includes a second circuit board, a first connection portion, and a second connection portion, where the second circuit board is laminated on the first circuit board;
The first connecting part is connected with the second circuit board and embedded in the first groove, and the second connecting part is connected with the second circuit board and embedded in the second groove.
Optionally, the first connection part is a first soldering part, and the second connection part is a second soldering part;
The first soldering part is welded to the first groove, and the second soldering part is welded to the second groove.
Optionally, the first circuit board is a flexible circuit board, and the second circuit board is a printed circuit board.
In a second aspect, an embodiment of the present application provides a battery assembly, where the battery assembly includes a battery core and the battery protection board;
the battery cell is connected to the battery protection plate.
In a third aspect, an embodiment of the present application provides an electronic device, where the electronic device includes the battery assembly.
In an embodiment of the present application, the battery protection plate includes: a first circuit board and a land; the connection pad comprises a first side and a second side which are arranged away from each other, and a third side and a fourth side which are arranged away from each other, wherein the first side is connected with the first circuit board; the third side is provided with a first groove recessed towards the fourth side, the first groove extends from the first side to the second side, the fourth side is provided with a second groove recessed towards the third side, and the second groove extends from the first side to the second side. Like this, when adopting the reflow soldering technology to connect first circuit board for the solder paste can flow along the direction of first side to the second side through first recess, and flow along the direction of first side to the second side through the second recess, increased the area of contact of solder paste and connection pad, thereby make first circuit board have better connection steadiness. The problem that solder paste is difficult to fill in the via holes with smaller sizes on the connecting disc is avoided, so that the solder paste is easy to emerge from the connecting disc, the risk of poor tin emerging is reduced, the first circuit board can be tightly connected, and good connection reliability is achieved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic view of a first circuit board of a battery protection board according to an embodiment of the present application;
fig. 2 is a schematic view showing a structure of a battery protection plate according to an embodiment of the present application.
Reference numerals: 10-a first circuit board; 20-connecting discs; 21-a second side; 22-third side; 23-fourth side; 24-a first groove; 25-a second groove; 30-a second circuit board; 31-a first connection; 32-a second connection; 26-connector.
Detailed Description
Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The features of the utility model "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
In the description of the present utility model, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 2, there are shown schematic structural views of a battery protection plate according to an embodiment of the present application, which may specifically include: a first circuit board 10 and lands 20;
the land 20 includes first and second sides 21 disposed away from each other, and third and fourth sides 22, 23 disposed away from each other, the first side being connected to the first circuit board 10;
The third side 22 is provided with a first groove 24 recessed towards the fourth side 23, the first groove 24 extending from said first side to the second side 21, the fourth side 23 being provided with a second groove 25 recessed towards the third side 22, the second groove 25 extending from said first side to the second side 21.
In the embodiment of the present application, when the first circuit board 10 is connected by adopting the reflow soldering process, if the first circuit board 10 is disposed above the second circuit board 30, the solder paste can flow along the direction from the first side to the second side 21 through the first groove 24 and along the direction from the first side to the second side 21 through the second groove 25; if the second circuit board 30 is disposed above the first circuit board 10, the solder paste can flow along the second side 21 to the first side through the first groove 24 and flow along the second side 21 to the first side through the second groove 25, so that the contact area between the solder paste and the land 20 is increased, and the first circuit board 10 has better connection stability. The problem that solder paste is difficult to fill because the through holes on the connecting disc 20 are round holes with smaller sizes is avoided, so that the solder paste is easy to emerge from the connecting disc 20, the risk of poor tin emerging is reduced, the first circuit board 10 can realize tighter connection, and good connection reliability is achieved.
Alternatively, in the embodiment of the present application, the first groove 24 and the second groove 25 are disposed opposite to each other, and the connection pad 20 has an "i" shape. In this way, the first groove 24 and the second groove 25 are symmetrically arranged, so that the connection positions of the first circuit board 10 are symmetrically distributed, and the stability and the connection reliability are better. For example, the first groove 24 and the second groove 25 may be disposed in a staggered manner, so that the connecting disc 20 has better structural stability, which may not be limited in the embodiment of the present application.
In the embodiment of the present application, optionally, the number of the first grooves 24 includes a plurality, the plurality of first grooves 24 are disposed in parallel on the third side 22, the number of the second grooves 25 includes a plurality, and the plurality of second grooves 25 are disposed in parallel on the fourth side 23. In this way, on the third side 22 of the land 20, solder paste can be more easily ejected from the land 20 through the plurality of first grooves 24, and on the fourth side 23 of the land 20, solder paste can be more easily ejected from the land 20 through the plurality of second grooves 25, further reducing the risk of poor solder ejection, thereby enabling a tighter connection of the first circuit board 10 with better connection reliability.
Illustratively, in the embodiment of the present application, the projection shape of the first groove 24 along the direction from the first side to the second side 21 is circular arc or rectangular, and the projection shape of the second groove 25 along the direction from the first side to the second side 21 is circular arc or rectangular. For example, the shapes of the projections of the first groove 24 and the second groove 25 in the first side to second side 21 direction may be both circular arcs, the shapes of the projections of the first groove 24 and the second groove 25 in the first side to second side 21 direction may be both rectangular, and furthermore, the shapes of the projections of the first groove 24 in the first side to second side 21 direction may be provided as circular arcs, and the shapes of the projections of the second groove 25 in the first side to second side 21 direction may be rectangular. It is also possible to provide that the shape of the projection of the first recess 24 in the direction of the first side to the second side 21 is rectangular and that the shape of the projection of the second recess 25 in the direction of the first side to the second side 21 is circular arc. That is, the shapes of the projections of the first groove 24 and the second groove 25 in the direction from the first side to the second side 21 may be the same or different, and may be set according to actual needs, which may not be limited by the embodiment of the present application.
Alternatively, in the embodiment of the present application, the number of lands 20 includes a plurality, and the plurality of lands 20 are provided at intervals to the first circuit board 10. In this way, a plurality of connection points can be realized by the plurality of lands 20, further enhancing the connection stability and reliability of the first circuit board 10. For example, as shown in fig. 1, the number of the connection pads 20 is shown to be 2, in addition, the number of the connection pads 20 may be set to be 3 or 4, etc., and may be set according to actual needs, and the specific number of the connection pads 20 may not be limited in the embodiment of the present application.
Specifically, in the embodiment of the present application, the battery protection board further includes a second circuit board 30, a first connection portion 31, and a second connection portion 32, where the second circuit board 30 is stacked on the first circuit board 10; the first connecting portion 31 is connected to the second circuit board 30 and is embedded in the first groove 24, and the second connecting portion 32 is connected to the second circuit board 30 and is embedded in the second groove 25. In this way, the connection between the first groove 24 of the first circuit board 10 and the second circuit board 30 is achieved through the first connection portion 31, and the connection between the second groove 25 of the first circuit board 10 and the second circuit board 30 is achieved through the second connection portion 32, so that the connection between the first circuit board 10 and the second circuit board 30 is achieved through the first connection portion 31 and the second connection portion 32 more firmly and reliably.
Illustratively, in an embodiment of the present application, as shown in fig. 2, the second circuit board 30 may be stacked on the bottom of the first circuit board 10. In addition, the second circuit board 30 may be stacked on top of the first circuit board 10, and the solder layer is coated on a side of the second circuit board 30 close to the first circuit board 10, and the specific stacking manner of the first circuit board 10 and the second circuit board 20 may not be limited in the embodiment of the present application.
In the embodiment of the present application, for example, a solder layer may be coated on the second circuit board 30, then the first circuit board 10 is laminated on the side of the second circuit board 30 coated with the solder layer, the solder layer is melted at a high temperature through a reflow process and is ejected from the first groove 24 of the land 20 of the first circuit board 10, the first connection portion 31 is formed after cooling and shaping, and the second connection portion 32 is formed after cooling and shaping.
The first solder portion may be melted to overflow solder paste from the first recess 24, so as to achieve a more stable connection between the first side of the land 20 and the second circuit board 30. And, the second soldering portion may be melted into solder paste to overflow from the second groove 25, so as to realize a relatively stable connection between the second side 21 of the land 20 and the second circuit board 30.
Specifically, in the embodiment of the present application, the first circuit board 10 is a flexible circuit board (FlexiblePrinted Circuit, abbreviated as FPC), and the second circuit board 30 is a printed circuit board (Printed CircuitBoard, abbreviated as PCB). In this way, the first circuit board 10 can be bent according to the assembly requirement through the flexible circuit board, and the second circuit board 30 has better structural strength through the printed circuit board, so that the connection with the battery core can be realized more reliably in the subsequent process.
Optionally, in the embodiment of the present application, the first circuit board 10 is further provided with a connector 26, and the connector 26 is connected to an end of the first circuit board 10 remote from the connection pad 20, so as to meet the requirement of the mounting position of the connector 26 on the battery protection board.
In summary, the battery protection plate according to the embodiment of the present application may at least include the following advantages:
In an embodiment of the present application, the battery protection plate includes: a first circuit board and a land; the connection pad comprises a first side and a second side which are arranged away from each other, and a third side and a fourth side which are arranged away from each other, wherein the first side is connected with the first circuit board; the third side is provided with a first groove recessed towards the fourth side, the first groove extends from the first side to the second side, the fourth side is provided with a second groove recessed towards the third side, and the second groove extends from the first side to the second side. Like this, when adopting the reflow soldering technology to connect first circuit board for the solder paste can flow along the direction of first side to the second side through first recess, and flow along the direction of first side to the second side through the second recess, increased the area of contact of solder paste and connection pad, thereby make first circuit board have better connection steadiness. The problem that solder paste is difficult to fill in the via holes with smaller sizes on the connecting disc is avoided, so that the solder paste is easy to emerge from the connecting disc, the risk of poor tin emerging is reduced, the first circuit board can be tightly connected, and good connection reliability is achieved.
The application also provides a battery assembly, which comprises an electric core and the battery protection plate; the battery cell is connected to the battery protection plate, and a better circuit protection effect is achieved on the battery cell through the battery protection plate.
In the embodiment of the present application, the battery cell may be a lithium ion battery cell or a polymer lithium battery cell, or may be a lithium iron phosphate battery cell, or the like, and the specific type of the battery cell may not be limited.
The battery assembly according to the embodiment of the application at least can comprise the following advantages:
In the embodiment of the application, the battery assembly comprises an electric core and the battery protection plate; the electric core is connected in the battery protection board, the battery protection board includes: a first circuit board and a land; the connection pad comprises a first side and a second side which are arranged away from each other, and a third side and a fourth side which are arranged away from each other, wherein the first side is connected with the first circuit board; the third side is provided with a first groove recessed towards the fourth side, the first groove extends from the first side to the second side, the fourth side is provided with a second groove recessed towards the third side, and the second groove extends from the first side to the second side. Like this, when adopting the reflow soldering technology to connect first circuit board for the solder paste can flow along the direction of first side to the second side through first recess, and flow along the direction of first side to the second side through the second recess, increased the area of contact of solder paste and connection pad, thereby make first circuit board have better connection steadiness. The problem that solder paste is difficult to fill in the via holes with smaller sizes on the connecting disc is avoided, so that the solder paste is easy to emerge from the connecting disc, the risk of poor tin emerging is reduced, the first circuit board can be tightly connected, and good connection reliability is achieved.
The application also provides electronic equipment which is characterized by comprising the battery assembly.
For example, in the embodiment of the present application, the electronic device may include, but is not limited to, any one of a mobile phone, a tablet computer, and a wearable device, and the embodiment of the present application may not be limited to a specific type of the electronic device.
The electronic device according to the embodiment of the application at least can comprise the following advantages:
In an embodiment of the application, the electronic device includes the battery assembly, and the battery assembly includes a battery core and the battery protection board; the electric core is connected in the battery protection board, the battery protection board includes: a first circuit board and a land; the connection pad comprises a first side and a second side which are arranged away from each other, and a third side and a fourth side which are arranged away from each other, wherein the first side is connected with the first circuit board; the third side is provided with a first groove recessed towards the fourth side, the first groove extends from the first side to the second side, the fourth side is provided with a second groove recessed towards the third side, and the second groove extends from the first side to the second side. Like this, when adopting the reflow soldering technology to connect first circuit board for the solder paste can flow along the direction of first side to the second side through first recess, and flow along the direction of first side to the second side through the second recess, increased the area of contact of solder paste and connection pad, thereby make first circuit board have better connection steadiness. The problem that solder paste is difficult to fill in the via holes with smaller sizes on the connecting disc is avoided, so that the solder paste is easy to emerge from the connecting disc, the risk of poor tin emerging is reduced, the first circuit board can be tightly connected, and good connection reliability is achieved.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A battery protection plate, characterized in that the battery protection plate comprises: a first circuit board and a land;
The connection pad comprises a first side and a second side which are arranged away from each other, and a third side and a fourth side which are arranged away from each other, wherein the first side is connected with the first circuit board;
The third side is provided with a first groove recessed towards the fourth side, the first groove extends from the first side to the second side, the fourth side is provided with a second groove recessed towards the third side, and the second groove extends from the first side to the second side.
2. The battery protection plate of claim 1, wherein the first groove and the second groove are disposed opposite to each other, and the connection pad has an "i" shape.
3. The battery protection plate of claim 1, wherein the number of the first grooves includes a plurality, the plurality of the first grooves is disposed in parallel on the third side, the number of the second grooves includes a plurality, and the plurality of the second grooves is disposed in parallel on the fourth side.
4. The battery protection plate according to claim 1, wherein a shape of a projection of the first groove in the first side to the second side direction is a circular arc or a rectangle, and a shape of a projection of the second groove in the first side to the second side direction is a circular arc or a rectangle.
5. The battery protection plate of claim 1, wherein the number of lands includes a plurality, the plurality of lands being disposed at intervals to the first circuit board.
6. The battery protection plate of claim 1, further comprising a second circuit board, a first connection portion, and a second connection portion, the second circuit board being laminated to the first circuit board;
The first connecting part is connected with the second circuit board and embedded in the first groove, and the second connecting part is connected with the second circuit board and embedded in the second groove.
7. The battery protection plate according to claim 6, wherein the first connection portion is a first soldering portion, and the second connection portion is a second soldering portion;
The first soldering part is welded to the first groove, and the second soldering part is welded to the second groove.
8. The battery protection plate of claim 6, wherein the first circuit board is a flexible circuit board and the second circuit board is a printed circuit board.
9. A battery assembly comprising a battery cell and the battery protection plate of any one of claims 1 to 8;
the battery cell is connected to the battery protection plate.
10. An electronic device comprising the battery assembly of claim 9.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221282195U true CN221282195U (en) | 2024-07-05 |
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