CN218483111U - Battery protection board and lithium ion battery - Google Patents
Battery protection board and lithium ion battery Download PDFInfo
- Publication number
- CN218483111U CN218483111U CN202222534007.4U CN202222534007U CN218483111U CN 218483111 U CN218483111 U CN 218483111U CN 202222534007 U CN202222534007 U CN 202222534007U CN 218483111 U CN218483111 U CN 218483111U
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- circuit board
- control circuit
- circuit module
- power circuit
- flexible
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a battery protection shield and lithium ion battery, battery protection shield includes: the flexible circuit board comprises a power circuit module, a control circuit module and a flexible circuit board, wherein the power circuit module and the control circuit module are arranged on the surface of the flexible circuit board at intervals, and the power circuit module and the control circuit module are electrically connected through the flexible circuit board. The utility model discloses a battery protection shield can avoid inside emergence warpage to good stability has.
Description
Technical Field
The utility model relates to a lithium ion battery field, concretely relates to battery protection shield and lithium ion battery.
Background
Referring to fig. 1, in a manufacturing process of a conventional lithium ion battery protection Board, first, components are mounted on a Printed Circuit Board (PCB) through a Chip On Board (COB) process, and then System In a Package (SIP) is performed to integrate the components and the PCB into a whole to form a hard Board 101, and then the hard Board 101 and a soft Board 102 are welded together. The components and parts installed on the PCB board can be divided into a power part and a control part according to functions, so that the whole size of the hard board 101 is long, when the hard board 101 and the soft board 102 are welded together, the end part of the hard board 101 in the length direction is easy to warp, the hard board 101 can be deviated in the welding process, and finally, poor effects such as insufficient solder and the like are caused, and the stability of the battery protection board in the using process is finally influenced.
Therefore, a solution capable of solving the problem of poor stability of the lithium ion battery protection board caused by warping of the hard board needs to be found.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art and leading to the relatively poor defect of lithium ion battery protection shield stability because of the warpage takes place for the hardboard to a battery protection shield and lithium ion battery are provided.
The utility model discloses a first aspect provides a battery protection shield, include: the flexible circuit board comprises a power circuit module, a control circuit module and a flexible circuit board, wherein the power circuit module and the control circuit module are arranged on the surface of the flexible circuit board at intervals, and the power circuit module and the control circuit module are electrically connected through the flexible circuit board.
Optionally, the power circuit module and the control circuit module are disposed on the same side surface of the flexible circuit board.
Optionally, the power circuit module and the control circuit module are disposed on two opposite side surfaces of the flexible circuit board.
Optionally, the power circuit module includes a power circuit board, and a first pad is disposed on a surface of one side of the power circuit board facing the flexible circuit board; the control circuit module comprises a control circuit board, and a second bonding pad is arranged on the surface of one side, facing the flexible circuit board, of the control circuit board; a plurality of third bonding pads are arranged on the surface of one side of the flexible circuit board, which faces the power circuit module, and a fourth bonding pad is arranged on the surface of one side of the flexible circuit board, which faces the control circuit module; the first pad and the third pad are welded together, and the second pad and the fourth pad are welded together.
Optionally, the power circuit module further includes a first plastic package layer, where the first plastic package layer is located on a side surface of the power circuit board away from the flexible circuit board; the control circuit module further comprises a second plastic packaging layer, and the second plastic packaging layer is located on the surface of one side, away from the flexible circuit board, of the control circuit board.
Optionally, the power circuit module includes a power circuit board; or the power circuit module comprises a plurality of power circuit boards, and the plurality of power circuit boards are arranged on one side of the flexible circuit board at intervals; the control circuit module comprises a control circuit board; or the control circuit module comprises a plurality of control circuit boards which are arranged at intervals on one side of the flexible circuit board.
Optionally, the substrates of the power circuit board and the control circuit board are copper substrates, and the thickness of the substrate of the power circuit board is greater than or equal to that of the substrate of the control circuit board.
Optionally, the thickness of the substrate of the power circuit board is 35 μm to 175 μm, and the thickness of the substrate of the control circuit board is 18 μm to 35 μm.
Optionally, the flexible circuit board includes a flexible main body board, a first bending part and a second bending part; the first bending part and the second bending part are positioned on two sides of the flexible main body plate in the length direction and are connected with the flexible main body plate; the power circuit module and the control circuit module are positioned on the surface of the flexible main body plate; the first bending part and the second bending part are suitable for being connected with an external power supply.
A second aspect of the present invention provides a lithium ion battery, including: electric core and aforementioned battery protection board.
The technical scheme of the utility model following beneficial effect can be realized:
1. the utility model discloses a battery protection board, through setting up power circuit module and control circuit module interval on flexible circuit board, power circuit module and control circuit module are connected with flexible circuit board alone respectively, and each part atress that can guarantee power circuit module and control circuit module is even, and the tip warpage takes place when avoiding being connected with flexible circuit board for battery protection board's stability is better.
2. Because the battery protection shield during operation, the electric current in the power circuit module is great, produces the heat easily, through setting up power circuit module and control circuit module interval on flexible circuit board, is favorable to the heat dissipation of power circuit module on the one hand, and on the other hand also can avoid the influence of the heat that the power circuit module produced to the control circuit module.
3. The utility model discloses a battery protection board, power circuit module and control circuit module both can set up in the same one side of flexible circuit board, also can set up in the different sides of flexible circuit board, make the utility model discloses a battery protection board can satisfy the concrete demand of different application scenes.
4. The utility model discloses a battery protection board sets up power circuit board and control circuit board respectively to one or polylith, can make the design of battery protection board more diversified to satisfy the concrete demand of different application scenes.
5. The utility model discloses a battery protection board, the thickness of the substrate of power circuit board is more than or equal to the thickness of control circuit board, on the one hand can be through increasing the thickness of power circuit board to reduce the internal resistance of power circuit board, and then reduce the power loss of power circuit board; on the other hand, the substrate of the control circuit board can be prevented from thickening at the same time, and the cost is reduced.
6. The lithium ion battery of the utility model, with the battery protection board, can avoid the defect of poor contact inside the battery protection board caused by the warping of the power circuit module or the control circuit module, and also can improve the heat dispersion of the battery protection board; therefore, a stable and reliable lithium ion battery is realized.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description relate only to some embodiments of the present disclosure and are not limiting to the present disclosure.
Fig. 1 is a schematic structural view of a battery protection plate in the prior art;
fig. 2 is a schematic structural diagram of an embodiment of a battery protection plate according to the present invention;
fig. 3A is a schematic structural diagram of an embodiment of the power circuit module according to the present invention;
fig. 3B is a schematic structural diagram of an embodiment of the control circuit module according to the present invention;
fig. 4A is a top view of an embodiment of the power circuit board of the present invention;
fig. 4B is a top view of an embodiment of the control circuit board of the present invention;
fig. 5A is a bottom view of an embodiment of the power circuit board of the present invention;
fig. 5B is a bottom view of an embodiment of the control circuit board of the present invention;
fig. 6 is a schematic structural diagram of an embodiment of the flexible printed circuit board of the present invention.
Description of reference numerals:
100-a power circuit module; 101-hard board; 102-a soft board; 110-a power circuit board; 111-power circuit components; 112-a first pad; 120-a first molding compound layer; 200-a control circuit module; 210-a control circuit board; 211-control circuit components; 212-a second pad; 220-a second plastic package layer; 300-a flexible circuit board; 311-third pad; 312-fourth pad.
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 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; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to 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.
Referring to fig. 2, an embodiment of the present invention provides a battery protection plate, including: the power circuit module 100 and the control circuit module 200 are arranged on the surface of the flexible circuit board 300 at intervals, and the power circuit module 100 and the control circuit module 200 are electrically connected through the flexible circuit board 300.
Specifically, the power circuit module 100 and the control circuit module 200 may be soldered to the flexible circuit board 300. The power circuit module 100 and the control circuit module 200 may be disposed on the same side or different sides of the flexible circuit board 300, and the invention is not limited thereto. The size of the power circuit module 100 is the same as or different from that of the control circuit module 200, and the present invention is not limited thereto.
The utility model discloses a battery protection board through setting up power circuit module 100 and control circuit module 200 interval on flexible circuit board 300, power circuit module 100 and control circuit module 200 are connected with flexible circuit board 300 alone respectively, can guarantee that each partial atress of power circuit module 100 and control circuit module 200 is even, avoids tip emergence warpage when being connected with flexible circuit board 300 for battery protection board's stability is better. In addition, when the battery protection board works, the current in the power circuit module 100 is large, and heat is easily generated, and the power circuit module 100 and the control circuit module 200 are arranged on the flexible circuit board 300 at intervals, so that on one hand, the heat dissipation of the power circuit module 100 is facilitated, and on the other hand, the influence of the heat generated by the power circuit module 100 on the control circuit module 200 can be avoided.
Referring to fig. 2, in an embodiment of the present invention, the power circuit module 100 and the control circuit module 200 are disposed on the same side surface of the flexible circuit board 300.
Specifically, the power circuit module 100 and the control circuit module 200 may be arranged in parallel in the longitudinal direction of the flexible circuit board 300, or may be arranged in parallel in the width direction of the flexible circuit board 300. The utility model discloses do not do specific restriction to the direction of arranging, distance and the precedence between each other of power circuit module 100 and control circuit module 200, as long as the two interval sets up can.
In an embodiment of the present invention, the power circuit module 100 and the control circuit module 200 are disposed on two opposite surfaces of the flexible circuit board 300.
Specifically, the power circuit module 100 and the control circuit module 200 may be partially overlapped or completely overlapped in the thickness direction of the flexible circuit board 300, or the power circuit module 100 and the control circuit module 200 are not overlapped in the thickness direction of the flexible circuit board 300, which is not limited in this embodiment of the present invention.
The utility model discloses a battery protection board, power circuit module 100 and control circuit module 200 both can set up in the same one side of flexible circuit board 300, also can set up in the different sides of flexible circuit board 300, make the utility model discloses a battery protection board can satisfy the different concrete demands of using the scene.
Referring to fig. 3A and 3B, and in combination with fig. 5A, 5B and 6, in an embodiment of the present invention, the power circuit module 100 includes a power circuit board 110, a side surface of the power circuit board 110 facing the flexible circuit board 300 is provided with a first pad 112; the control circuit module 200 includes a control circuit board 210, and a second pad 212 is disposed on a surface of the control circuit board 210 facing the flexible circuit board 300; a third pad 311 is disposed on a side surface of the flexible circuit board 300 facing the power circuit module 100, and a fourth pad 312 is disposed on a side surface of the flexible circuit board 300 facing the control circuit module 200; the first pad 112 and the third pad 311 are welded together, and the second pad 212 and the fourth pad 312 are welded together.
Specifically, the first pads 112 may be arranged regularly side by side as shown in fig. 3A, and the first pads 112 may be arranged in a single row or a plurality of rows; the first pads 112 may also be arranged in any pattern. The second pads 212 may be arranged side by side regularly as shown in fig. 3B, and the second pads 212 may be arranged in a single row or a plurality of rows; the second pads 212 may also be arranged in any pattern. The third pads 311 are arranged in the same manner as the first pads 112; the fourth pads 312 are disposed in the same manner as the second pads 212.
In an embodiment of the present invention, the substrates of the power circuit board 110 and the control circuit board 210 are copper substrates, and the thickness of the substrate of the power circuit board 110 is greater than or equal to the thickness of the substrate of the control circuit board 210.
The utility model discloses a battery protection board, the thickness of the substrate of power circuit board 110 is more than or equal to the thickness of control circuit board 210, on the one hand can be through the thickness that increases power circuit board 110 to reduce the internal resistance of power circuit board 110, and then reduce the power loss of power circuit board 110; on the other hand, the substrate of the control circuit board 210 can be prevented from being thickened at the same time, which is beneficial to reducing the cost.
In an embodiment of the present invention, the thickness of the substrate of the power circuit board 110 is 35 μm to 175 μm, and exemplarily, the thickness of the substrate of the power circuit board 110 is 35 μm, 55 μm, 75 μm, 95 μm, 115 μm, 135 μm, 155 μm or 175 μm; the thickness of the substrate of the control circuit board 210 is 18 μm to 35 μm, and illustratively, the thickness of the substrate of the control circuit board 210 is 18 μm, 20 μm, 22 μm, 24 μm, 26 μm, 28 μm, 30 μm, 32 μm, or 35 μm.
In an embodiment of the present invention, the power circuit module 100 includes a power circuit board; alternatively, the power circuit module 100 includes a plurality of power circuit boards, which are disposed at intervals on one side of the flexible circuit board 300; the control circuit module 200 includes a control circuit board; alternatively, the control circuit module 200 includes a plurality of control circuit boards, which are disposed at intervals on one side of the flexible circuit board 300.
The utility model discloses a battery protection board sets up power circuit board 110 and control circuit board 210 into one or polylith respectively, can make the design of battery protection board more diversified to satisfy the concrete demand of different application scenes.
Referring to fig. 3A and 3B, in an embodiment of the present invention, the power circuit module 100 further includes a first plastic package layer 120, where the first plastic package layer 120 is located on a side surface of the power circuit board 110 facing away from the flexible circuit board 300; the control circuit module 200 further includes a second molding layer 220, and the second molding layer 220 is located on a side surface of the control circuit board 210 facing away from the flexible circuit board 300.
Referring to fig. 4A, in an embodiment of the present invention, a side surface of the power circuit board 110 facing away from the flexible circuit board 300 has a plurality of power circuit components 111. The power circuit components 111 include, but are not limited to, metal Oxide Semiconductor Field Effect Transistors (MOSFETs) and Positive Temperature Coefficient (PTC) thermistors; the power circuit components 111 may be arranged side by side regularly as shown in fig. 4A, and the power circuit components 111 may be arranged in a single row or a plurality of rows; the power circuit components 111 may be provided in any pattern. Referring to fig. 4B, in an embodiment of the present invention, a side surface of the control circuit board 210 facing away from the flexible circuit board 300 has a plurality of control circuit components 211. The control Circuit component 211 includes, but is not limited to, an Integrated Circuit Chip (IC) and a fuel gauge Chip. The control circuit components 211 may be arranged side by side regularly as shown in fig. 4B, and the control circuit components 211 may be arranged in a single row or a plurality of rows; the control circuit component 211 may be provided in an arbitrary pattern.
Referring to fig. 6, in an embodiment of the present invention, the flexible circuit board 300 includes a flexible main body plate, a first bending portion and a second bending portion; the first bending part and the second bending part are positioned on two sides of the flexible main body plate in the length direction and are connected with the flexible main body plate; the power circuit module 100 and the control circuit module 200 are positioned on the surface of the flexible main body board; the first bending part and the second bending part are suitable for being connected with an external power supply.
An embodiment of the utility model provides a lithium ion battery, include: electric core and aforementioned battery protection board.
The lithium ion battery of the utility model, with the battery protection board, can avoid the defect of poor contact inside the battery protection board caused by the warping of the power circuit module or the control circuit module, and also can improve the heat dispersion of the battery protection board; therefore, a stable and reliable lithium ion battery is realized.
In the description of the present specification, reference to the description of the terms "this embodiment," "one embodiment," "some embodiments," "an example," "a specific example," 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 present invention. 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.
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 invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, and simple improvements made in the spirit of the present invention should be included in the protection scope of the present invention.
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 variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. A battery protection plate, comprising: the flexible circuit board comprises a power circuit module, a control circuit module and a flexible circuit board, wherein the power circuit module and the control circuit module are arranged on the surface of the flexible circuit board at intervals, and the power circuit module and the control circuit module are electrically connected through the flexible circuit board.
2. The battery protection panel according to claim 1, wherein the power circuit module and the control circuit module are disposed on a same side surface of the flexible circuit board.
3. The battery protection board according to claim 1, wherein the power circuit module and the control circuit module are disposed on opposite side surfaces of the flexible circuit board.
4. The battery protection board according to claim 1, wherein the power circuit module includes a power circuit board, a side surface of the power circuit board facing the flexible circuit board is provided with a first pad;
the control circuit module comprises a control circuit board, and a second bonding pad is arranged on the surface of one side, facing the flexible circuit board, of the control circuit board;
a third bonding pad is arranged on the surface of one side, facing the power circuit module, of the flexible circuit board, and a fourth bonding pad is arranged on the surface of one side, facing the control circuit module, of the flexible circuit board;
the first pad is welded with the third pad, and the second pad is welded with the fourth pad.
5. The battery protection plate according to claim 4, wherein the power circuit module further comprises a first molding layer located on a side surface of the power circuit board facing away from the flexible circuit board;
the control circuit module further comprises a second plastic packaging layer, and the second plastic packaging layer is located on the surface of one side, away from the flexible circuit board, of the control circuit board.
6. The battery protection plate according to claim 1, wherein the power circuit module includes a power circuit board; or the power circuit module comprises a plurality of power circuit boards, and the plurality of power circuit boards are arranged on one side of the flexible circuit board at intervals;
the control circuit module comprises a control circuit board; or the control circuit module comprises a plurality of control circuit boards, and the control circuit boards are arranged on one side of the flexible circuit board at intervals.
7. The battery protection plate according to claim 4, 5 or 6, wherein the substrates of the power circuit board and the control circuit board are copper substrates, and the thickness of the substrate of the power circuit board is greater than or equal to the thickness of the substrate of the control circuit board.
8. The battery protection plate according to claim 7, wherein the substrate of the power circuit board has a thickness of 35 to 175 μm, and the substrate of the control circuit board has a thickness of 18 to 35 μm.
9. The battery protection board according to claim 1, wherein the flexible circuit board includes a flexible main body board, a first bent portion, and a second bent portion;
the first bending part and the second bending part are positioned on two sides of the flexible main body plate in the length direction, and the first bending part and the second bending part are connected with the flexible main body plate;
the power circuit module and the control circuit module are positioned on the surface of the flexible main body plate;
the first bending part and the second bending part are suitable for being connected with an external power supply.
10. A lithium ion battery, comprising: a battery cell and the battery protection sheet of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222534007.4U CN218483111U (en) | 2022-09-23 | 2022-09-23 | Battery protection board and lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222534007.4U CN218483111U (en) | 2022-09-23 | 2022-09-23 | Battery protection board and lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218483111U true CN218483111U (en) | 2023-02-14 |
Family
ID=85168448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222534007.4U Active CN218483111U (en) | 2022-09-23 | 2022-09-23 | Battery protection board and lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218483111U (en) |
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2022
- 2022-09-23 CN CN202222534007.4U patent/CN218483111U/en active Active
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