A battery protection plate assembly, a battery and an electronic device

Abstract

The utility model discloses a kind of battery protection plate assembly, battery and electronic equipment, battery protection plate assembly includes flexible circuit board and first printed circuit board, flexible circuit board includes main body part and protruding part, main body part and protruding part are integrated and protruding part extends from the side of main body part, and first printed circuit board is fixed in protruding part, by first printed circuit board is fixed in protruding part, protruding part can be played easy bending, light weight advantage, to meet the demand of multifunction, protruding part can also be made to have higher strength, not easy to occur deformation damage, to improve the stability of battery protection plate assembly. And by the part electronic components of battery is set on the first printed circuit board of external, to make the number of electronic components on the internal printed circuit board of battery protection plate assembly reduce, and then the volume of battery internal electronic components can be reduced, to improve the energy density of battery.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, specifically relating to a battery protection board assembly, a battery, and electronic equipment. Background Technology

[0002] As battery technology continues to innovate, the requirements for battery performance are also increasing. However, in existing batteries, all electronic components are placed on printed circuit boards inside the battery, which makes the electronic components inside the battery larger, thereby reducing the energy density of the battery. Utility Model Content

[0003] The purpose of this invention is to provide a battery protection board assembly that reduces the volume of internal electronic components in the battery, thereby increasing the battery's energy density.

[0004] To solve the above-mentioned technical problems, this utility model is implemented as follows:

[0005] This utility model embodiment provides a battery protection board assembly for protecting battery cells, the battery protection board assembly comprising:

[0006] A flexible circuit board, comprising a main body and a protrusion, wherein the main body and the protrusion are integrally connected and the protrusion extends from one side of the main body, and the other side of the main body is used for electrical connection with the battery cell;

[0007] A first printed circuit board is provided with some electronic components. The first printed circuit board is fixed to the protrusion and is electrically connected to the protrusion.

[0008] Optionally, the battery protection board assembly further includes a first reinforcing member located at the end of the protrusion away from the main body, and the first reinforcing member is fixedly connected to the protrusion.

[0009] Optionally, the battery protection board assembly further includes a connector located at one end of the protrusion away from the main body, and the connector is electrically connected to the protrusion.

[0010] Optionally, the first reinforcing member is located on the first surface of the protrusion, and the connector is located on the second surface of the protrusion, wherein the first surface and the second surface are two opposing sides.

[0011] Optionally, the battery protection board assembly further includes a second printed circuit board;

[0012] The second printed circuit board is provided with another set of electronic components. The second printed circuit board is fixed to the main body and electrically connected to the main body.

[0013] Optionally, another portion of the electronic components are disposed on the same surface of the second printed circuit board.

[0014] Alternatively, another portion of the electronic components may be disposed on the surface of the second printed circuit board opposite to the protrusion.

[0015] The present invention also provides a battery, the battery including a cell and a battery protection board assembly as described in any of the above claims, the battery protection board assembly being fixed to one end of the cell and electrically connected to the cell.

[0016] Optionally, the battery further includes a second reinforcing member, which is located at one end of the cell near the battery protection board assembly and is fixedly connected to the cell. The second reinforcing member is fixedly connected to the negative nickel plate of the cell.

[0017] This invention also provides an electronic device, which includes the battery described in any of the above claims.

[0018] The battery protection board assembly of this utility model embodiment includes a flexible circuit board and a first printed circuit board. The flexible circuit board includes a main body and a protrusion, which are integrated and the protrusion extends from one side of the main body. The first printed circuit board is fixed to the protrusion. By fixing the first printed circuit board to the protrusion, the advantages of the protrusion's flexibility and light weight can be utilized to meet the needs of multiple functions. Furthermore, the protrusion has high strength and is not easily deformed or damaged, thereby improving the stability of the battery protection board assembly. By placing some of the battery's electronic components on the external first printed circuit board, the number of electronic components on the internal printed circuit board of the battery protection board assembly is reduced, thereby reducing the volume of the internal electronic components and increasing the battery's energy density.

[0019] Additional aspects and advantages of this invention 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 invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of a battery protection board assembly provided in an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of a battery provided in an embodiment of the present utility model;

[0023] Figure 3This is a schematic diagram of a battery cell provided in an embodiment of the present utility model;

[0024] Figure label:

[0025] Flexible circuit board-10, main body-101, protrusion-102, first printed circuit board-20, first reinforcing member-30, connector-40, second printed circuit board-50, battery cell-60, second reinforcing member-70. Detailed Implementation

[0026] The term "plural" in the specification and claims of this utility model means two or more. The terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features in the embodiments can be combined with each other.

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Reference Figure 1 This utility model provides a battery protection board assembly, which includes:

[0031] The flexible circuit board 10 includes a main body 101 and a protrusion 102. The main body 101 and the protrusion 102 are integrated and the protrusion 102 extends from one side of the main body 101. The other side of the main body 101 is used for electrical connection with the battery cell.

[0032] The first printed circuit board 20 is provided with some electronic components. The first printed circuit board 20 is fixed to the protrusion 102 and is electrically connected to the protrusion 102.

[0033] like Figure 1 As shown, the battery protection board assembly of this embodiment includes a flexible circuit board 10 and a first printed circuit board 20. The flexible circuit board 10 includes a main body 101 and a protrusion 102, which are integrated and extend from one side of the main body 101. The first printed circuit board 20 is fixed to the protrusion 102. By fixing the first printed circuit board 20 to the protrusion 102, the advantages of the protrusion 102—its flexibility and light weight—can be utilized to meet the needs of multiple functions. Furthermore, the protrusion 102 has high strength and is not easily deformed or damaged, thus improving the stability of the battery protection board assembly. By placing some of the battery's electronic components on the external first printed circuit board 20, the number of electronic components on the internal printed circuit board of the battery protection board assembly is reduced, thereby reducing the volume of the internal electronic components and increasing the battery's energy density.

[0034] In the embodiments of this utility model, the flexible circuit board 10 can be bent, folded, or even rolled up, and is lightweight, thus adapting to complex three-dimensional structural designs and meeting multifunctional requirements. The first printed circuit board 20 is a rigid PCB (Printed Circuit Board), which gives it high mechanical strength and stability, enabling it to maintain its shape and structure without deformation under various working conditions, thereby ensuring the stability and reliability of the battery protection board assembly. Combining the flexible circuit board 10 with the first printed circuit board 20 can fully leverage the advantages of both, resulting in superior performance of the battery protection board assembly.

[0035] In embodiments of this utility model, the number of protrusions 102 can be set to one or more. When the number of protrusions 102 is one, the corresponding number of first printed circuit boards 20 is also one; when the number of protrusions 102 is multiple, the corresponding number of first printed circuit boards 20 is also multiple, and the number of first printed circuit boards 20 is the same as the number of protrusions 102. Figure 1In the middle, there are two protrusions 102, one of which is connected to the positive terminal of the electronic device, and the other protrusion 102 is connected to the negative terminal of the electronic device.

[0036] In the embodiments of this utility model, the main body 101 and the protrusion 102 are integrated, and the protrusion 102 extends from one side of the main body 101. The protrusion 102 and the main body 101 can be configured to be in the same plane or in different planes. The shape and size of the protrusion 102 can be designed according to actual needs.

[0037] In the embodiments of this utility model, the first printed circuit board 20 is fixed to the protrusion 102. The first printed circuit board 20 can be fixed to the protrusion 102 by conductive adhesive, screws, or clips. When conductive adhesive is used to bond the first printed circuit board 20 to the protrusion 102, it not only provides mechanical fixation but also ensures the reliability of the electrical connection. When screws are used to fix the first printed circuit board 20 to the protrusion 102, corresponding screw holes can be provided on the first printed circuit board 20 and the protrusion 102, and the two can be fixed together by screws. This method is convenient for disassembly and installation. When clips are used to fix the first printed circuit board 20 to the protrusion 102, slots or clip structures can be designed on the protrusion 102. The first printed circuit board 20 is fixed to the protrusion 102 by the clip structure. This fixing method is also convenient for installation and disassembly.

[0038] Optionally, refer to Figure 1 The battery protection board assembly also includes a first reinforcing member 30, which is located at the end of the protrusion 102 away from the main body 101 and is fixedly connected to the protrusion 102.

[0039] like Figure 1 As shown, the battery protection board assembly also includes a first reinforcing member 30. The first reinforcing member 30 is located at the end of the protrusion 102 away from the main body 101. The first reinforcing member 30 is fixedly connected to the protrusion 102. By providing the first reinforcing member 30 on the protrusion 102, the structural strength of the protrusion 102 can be significantly enhanced. Since the protrusion 102 is part of the flexible circuit board 10, its structural strength is relatively weak. By fixing it to the first reinforcing member 30, the protrusion 102 can be effectively prevented from deforming or being damaged by external forces during use.

[0040] In this embodiment of the present invention, by placing the first reinforcing member 30 at the end of the protrusion 102 away from the main body 101, the strength of the end of the protrusion 102 can be increased, facilitating the subsequent installation of the connector 40 at the end of the protrusion 102. The first reinforcing member 30 can be made of metal, plastic, or resin. When the first reinforcing member 30 is made of metal, the first reinforcing member 30 and the protrusion 102 can be connected by adhesive or welding. When the first reinforcing member 30 is made of plastic or resin, they can be connected by adhesive. When the first reinforcing member 30 and the protrusion 102 are connected by adhesive, conductive adhesive or high-strength structural adhesive can be used to connect them. When the first reinforcing member 30 and the protrusion 102 are connected by welding, the connection will be firm and have high strength.

[0041] Optionally, refer to Figure 1 The battery protection board assembly also includes a connector 40, which is located at the end of the protrusion 102 away from the main body 101 and is electrically connected to the protrusion 102.

[0042] like Figure 1 As shown, connector 40 is located at the end of protrusion 102 away from main body 101. Connector 40 is electrically connected to protrusion 102. By providing connector 40 at the end of protrusion 102 and electrically connecting connector 40 to protrusion 102, the battery protection board assembly can be connected to other external devices through connector 40. Since connector 40 has stable performance, the stability of the entire system can be improved.

[0043] In the embodiments of this utility model, the connector 40 includes an FPC (Flexible Printed Circuit) connector, a pin-type connector, or a magnetic connector. The FPC connector is a flexible flat cable connector, small in size, suitable for small devices such as mobile phones and tablets. It can be used for connection between the battery and the motherboard and supports low-current transmission, thus ensuring signal integrity and stability. The pin-type connector consists of metal pins and can connect to the positive and negative terminals of the battery. It has good conductivity and mechanical strength and is commonly used in small electronic devices for direct connection between the battery and the device. The magnetic connector uses magnetic force to connect the battery and the device, which is convenient and quick, suitable for charging devices and mobile devices, and allows users to charge quickly.

[0044] In the embodiments of this utility model, the first reinforcing member 30 and the connector 40 are both located at the end of the protrusion 102 away from the main body 101. They can be located on the same surface of the protrusion 102 or on different surfaces of the protrusion 102. When the first reinforcing member 30 and the connector 40 are located on the same surface of the protrusion 102, the first reinforcing member 30 is connected to the protrusion 102 first, and the connector 40 is connected to the first reinforcing member 30. At this time, several small holes can be opened on the first reinforcing member 30 so that the connector 40 can be electrically connected to the protrusion 102 through the small holes. When the first reinforcing member 30 and the connector 40 are located on different surfaces of the protrusion 102, the connector 40 is directly electrically connected to the protrusion 102.

[0045] Optionally, refer to Figure 1 The first reinforcing member 30 is located on the first surface of the protrusion 102, and the connector 40 is located on the second surface of the protrusion 102. The first surface and the second surface are two opposing surfaces.

[0046] like Figure 1 As shown, the first reinforcing member 30 is located on the first surface of the protrusion 102, and the connector 40 is located on the second surface of the protrusion 102. By partitioning the connector 40 and the first reinforcing member 30, the two surfaces of the protrusion 102 each perform different functions: the first surface is used to enhance structural strength, and the second surface is used to achieve electrical connection. This partitioned layout can avoid functional conflicts and improve the reliability of the entire component. Furthermore, by arranging the connector 40 and the first reinforcing member 30 on the two surfaces of the protrusion 102 respectively, the interference of the first reinforcing member 30 on the electrical connection can be effectively reduced, thereby improving the stability of the electrical connection.

[0047] Optionally, refer to Figure 1 The battery protection board assembly also includes a second printed circuit board 50;

[0048] The second printed circuit board 50 is provided with another set of electronic components. The second printed circuit board 50 is fixed to the main body 101 and electrically connected to the main body 101.

[0049] like Figure 1 As shown, some electronic components are provided on the first printed circuit board 20, and another part of electronic components are provided on the second printed circuit board 50. By distributing the electronic components on the two printed circuit boards, space can be utilized more rationally, making the entire battery protection board assembly more compact and thus improving the energy density of the battery.

[0050] In the embodiments of this utility model, electronic components typically include MOSFETs (Metal Oxide Semiconductors), inductors, transformers, resistors, and capacitors. MOSFETs are used to control the on / off state of the battery charging and discharging circuit to achieve overcharge, over-discharge, overcurrent, and short-circuit protection; therefore, MOSFETs typically have a large volume to withstand high current. Inductors and transformers are also relatively large, used for electromagnetic induction and energy conversion. Resistors are used for current limiting and sampling, and are relatively small. Capacitors are used for instantaneous voltage regulation and filtering, and are also relatively small. The second printed circuit board 50 is the main circuit board, and smaller electronic components, such as resistors and capacitors, can be placed on the second printed circuit board 50. The first printed circuit board 20 is the auxiliary circuit board, and larger electronic components, such as MOSFETs, inductors, and transformers, can be placed on the first printed circuit board 20. In existing technologies, all electronic components are located on the second printed circuit board 50, occupying a significant amount of space inside the battery. In this application, however, these bulky electronic components are moved to the first printed circuit board 20, thereby reducing the volume occupied by the electronic components on the second printed circuit board 50 and thus increasing the battery's energy density. Furthermore, the combination of the first printed circuit board 20 and the second printed circuit board 50 allows for flexible configuration based on the number and layout requirements of the electronic components, avoiding excessive concentration on a single circuit board and reducing the board's area and complexity.

[0051] Optionally, refer to Figure 1 Another part of the electronic components are located on the same surface of the second printed circuit board 50.

[0052] like Figure 1 As shown, by concentrating the electronic components on the second printed circuit board 50 on its same surface, the electronic components can be arranged in a staggered manner. The height of the electronic component is the height of the tallest electronic component, and the height direction of the electronic component is... Figure 1 The first direction Y is used, which further reduces the volume occupied by electronic components on the second printed circuit board 50, thereby further reducing the volume of the battery. In addition, concentrating the electronic components on the second printed circuit board 50 on its same surface can simplify the wiring design, reduce cross-layer wiring, thereby reducing manufacturing costs and improving production efficiency.

[0053] Optionally, refer to Figure 1 Another part of the electronic components are disposed on the surface of the second printed circuit board 50 away from the protrusion 102.

[0054] like Figure 1As shown, the surface of the second printed circuit board 50 away from the protrusion 102 is the surface of the second printed circuit board 50 near the battery cell. Another part of the electronic components are placed on the surface of the second printed circuit board 50 away from the protrusion 102, so that the electronic components can make full use of the space between the second printed circuit board 50 and the battery cell, thereby further reducing the size of the battery.

[0055] like Figure 2 As shown, this utility model also provides a battery, which includes a battery cell 60 and a battery protection board assembly according to any of the above embodiments. The battery protection board assembly is fixed to one end of the battery cell 60 and electrically connected to the battery cell 60. By electrically connecting the battery protection board assembly to the battery cell 60, the battery protection board assembly can provide multiple protections for the battery cell 60, such as overcharge, over-discharge, overcurrent, and short circuit, thereby effectively preventing the battery cell 60 from being damaged due to abnormal operating conditions, or even causing safety problems. In addition, using the battery protection board assembly in the above embodiments can effectively improve the energy density of the battery.

[0056] Optionally, refer to Figure 3 The battery also includes a second reinforcing member 70, which is located at one end of the cell 60 near the battery protection board assembly and is fixedly connected to the cell 60. The second reinforcing member 70 is fixedly connected to the negative nickel plate of the cell.

[0057] like Figure 3 As shown, the battery also includes a second reinforcing member 70, which is located at one end of the cell 60 near the battery protection board assembly. By welding the second reinforcing member 70 to the negative electrode nickel sheet of the cell 60, the high temperature during welding can be prevented from damaging the casing of the cell 60.

[0058] In the embodiments of this utility model, the second reinforcing member 70 can be made of metal or conductive plastic. When the second reinforcing member 70 is made of metal, the high mechanical strength of the metal enhances the structural stability of the battery cell 60. In addition, the good conductivity of the metal ensures the reliability of the electrical connection. When the second reinforcing member 70 is made of conductive plastic, its lightweight and conductivity allow the second reinforcing member 70 to achieve electrical connection without adding too much weight.

[0059] This invention also provides an electronic device comprising the battery described in any of the above embodiments. Due to the high energy density of these batteries, by applying them to electronic devices, more electrical energy can be stored within the same volume or weight, thereby significantly extending the usage time of the electronic device, such as enabling longer battery life for mobile phones or laptops. Simultaneously, high-energy-density batteries are smaller and lighter in weight for the same capacity, allowing for more compact and portable electronic device designs. For example, some high-end smartphones and thin and light laptops use high-energy-density batteries, achieving smaller size and lighter weight, making them easier to carry. Furthermore, high-energy-density batteries typically support higher charging power, enabling fast charging and reducing charging wait time. This allows high-energy-density batteries to provide more stable and longer-lasting power support in devices requiring high power output (such as gaming laptops and high-performance tablets).

[0060] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

Claims

1. A battery protection board assembly for protecting battery cells, characterized in that, The battery protection board assembly includes: A flexible circuit board (10) includes a main body (101) and a protrusion (102), the main body (101) and the protrusion (102) are integrated and the protrusion (102) extends from one side of the main body (101), and the other side of the main body (101) is used for electrical connection with the battery cell; A first printed circuit board (20) is provided with some electronic components. The first printed circuit board (20) is fixed to the protrusion (102) and electrically connected to the protrusion (102).

2. The battery protection board assembly according to claim 1, characterized in that, The battery protection board assembly also includes a first reinforcing member (30), which is located at the end of the protrusion (102) away from the main body (101) and is fixedly connected to the protrusion (102).

3. The battery protection board assembly according to claim 2, characterized in that, The battery protection board assembly also includes a connector (40) located at one end of the protrusion (102) away from the main body (101), and the connector (40) is electrically connected to the protrusion (102).

4. The battery protection board assembly according to claim 3, characterized in that, The first reinforcing member (30) is located on the first surface of the protrusion (102), and the connector (40) is located on the second surface of the protrusion (102). The first surface and the second surface are two opposing sides.

5. The battery protection board assembly according to claim 1, characterized in that, The battery protection board assembly also includes a second printed circuit board (50); The second printed circuit board (50) is provided with another part of electronic components. The second printed circuit board (50) is fixed to the main body (101) and electrically connected to the main body (101).

6. The battery protection board assembly according to claim 5, characterized in that, Another portion of the electronic components are disposed on the same surface of the second printed circuit board (50).

7. The battery protection board assembly according to claim 6, characterized in that, Another portion of the electronic components are disposed on the surface of the second printed circuit board (50) opposite to the protrusion (102).

8. A battery, characterized in that, The battery includes a cell (60) and a battery protection board assembly according to any one of claims 1-7, wherein the battery protection board assembly is fixed to one end of the cell (60) and electrically connected to the cell (60).

9. The battery according to claim 8, characterized in that, The battery also includes a second reinforcing member (70), which is located at one end of the cell (60) near the battery protection board assembly and is fixedly connected to the cell (60). The second reinforcing member (70) is fixedly connected to the negative electrode nickel sheet of the cell.

10. An electronic device, characterized in that, The electronic device includes the battery as described in any one of claims 8-9.

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