Battery protection board and battery
By integrating the control module into the soft board body in the battery protection board and integrating it with the power module on the hard board body, the problem of separate settings in the prior art affecting later assembly is solved, and a more compact design and more Good assembly process.
Patent Information
- Application Number
- CN202421003444.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-09
AI Technical Summary
When the existing battery protection board is separately set up the control module and the power module, there are problems that affect later assembly, especially when welding, the FPC part will exceed the end of the PCB, affecting the overall length of the hard board body.
A battery protection board is designed, in which the control module is integrated on the soft board body, the power module is integrated on the hard board body, and the communication connection between the control module and the power module is realized through the control welding part and the power welding part. One end of the soft board main body is welded to the power welding part at one end of the hard board main body by the control welding part, and the other end is bent toward the other end of the hard board main body to avoid affecting the length of the hard board main body.
By designing the control module on the soft board body, the space occupied by the hard board body is reduced, and the space occupied by the original control module is saved, so that the length and width of the hard board body can be shortened, or the thickness and width of the copper foil can be increased. , and will not affect the later assembly process.
Smart Images
Figure CN222509614U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of lithium batteries, and in particular to a battery protection board and a battery. Background Art
[0002] The battery protection circuit module (PCM) is an important component that protects the battery from overcharge, over discharge, short circuit, etc. The battery protection board includes a flexible printed circuit (FPC) and a printed circuit board (PCB).
[0003] The PCB in the prior art generally includes a control module and a power module (integrates the control module and the power module at the same time). As a result, the control module occupies a relatively large board space, so that the length and width of the PCB cannot be further shortened, and the thickness and width of the PCB copper foil cannot be further increased.
[0004] In order to solve the above technical problems, the control module and the power module are separately arranged in the prior art, that is, the control module is integrated on the FPC, and only the power module is integrated on the PCB, and finally the PCB and the FPC are welded.
[0005] However, this separate setting method still has the problem of affecting the later assembly of the battery protection board. Specifically, when the PCB and FPC are welded in the prior art, the soldering point is at one end of the PCB. In this way, since the FPC has a certain length, part of the FPC will exceed the end of the PCB, affecting the overall length of the PCB, and further affecting the later assembly process of the battery protection board. Utility Model Content
[0006] The purpose of the present application is to provide a battery protection board and a battery, thereby solving the problem of affecting the later assembly of the battery protection board in the existing method of separately arranging the control module and the power module.
[0007] According to the first aspect of the present application, a battery protection board is provided, which includes a soft board body, a hard board body, a control module arranged on the soft board body and a power module arranged on the hard board body; the hard board body includes two ends in its length direction, and the soft board body includes two ends in its length direction; the control module includes a control welding part, and the power module includes a power welding part; the control welding part is arranged at one end of the soft board body, and the power welding part is arranged at one end of the hard board body; the soft board body and the hard board body can be welded via the control welding part and the power welding part, so that the control module is communicatively connected with the power module; the other end of the soft board body can be bent toward the other end of the hard board body.
[0008] In any of the above technical solutions, further, the control module also includes a control wire connected to the control welding part; the power module also includes a power wire connected to the power welding part; the control wire and the control welding part are both arranged on the soft board body, and the power wire and the power welding part are both arranged on the hard board body.
[0009] In any of the above technical solutions, further, the control welding part is a control pad arranged on the soft board body, and the power welding part is a power pad arranged on the hard board body; the control pad and the power pad can be welded.
[0010] In any of the above technical solutions, further, the control module also includes a plurality of control devices connected to the control wire, the plurality of control devices are divided into two groups, and the two groups of control devices are respectively arranged at both ends of the soft board body; at least a portion between the two ends of the soft board body can be bent.
[0011] In any of the above technical solutions, further, the soft board body can be bent into a concave shape.
[0012] In any of the above technical solutions, further, the concave portion of the concave soft board body accommodates the hard board body; the two groups of control devices are arranged on the outer side of the soft board body facing away from the hard board body, and the control pads are arranged on the inner side of the soft board body facing the hard board body.
[0013] In any of the above technical solutions, further, the control pad is also provided at the other end of the soft board body; the hard board body includes a front side and a back side opposite to each other in its thickness direction; the power pad is provided on the front and back sides of the hard board body, the control pad at one end of the soft board body is welded to the power pad on the front side, and the control pad at the other end of the soft board body is welded to the power pad on the back side.
[0014] In any of the above technical solutions, further, the two groups of control devices are respectively arranged on two opposite inner side surfaces of the soft board body; the control pads are arranged on the outer side surface of the soft board body; the control pads on the outer side surface of the soft board body are welded to the power pads of the hard board body, and the other end of the soft board body is located on the side of the soft board body away from the hard board body.
[0015] In any of the above technical solutions, further, the battery protection plate also includes an insulating rubber strip; the insulating rubber strip is arranged between the two groups of control devices.
[0016] According to a second aspect of the present application, a battery is provided, comprising the battery protection board as described above.
[0017] According to the battery protection board of the present application, the battery protection board includes a soft board body, a hard board body, a control module arranged on the soft board body, and a power module arranged on the hard board body. The hard board body includes two ends in its length direction, and the soft board body includes two ends in its length direction; the control module includes a control welding part, and the power module includes a power welding part; the control welding part is arranged at one end of the soft board body, and the power welding part is arranged at one end of the hard board body; the soft board body and the hard board body can be welded via the control welding part and the power welding part, so that the control module and the power module are connected in communication; the other end of the soft board body can be bent toward the other end of the hard board body.
[0018] According to the above technical features, the beneficial effects of this application are:
[0019] The battery protection board of the present application designs the control module onto the soft board body to reduce the occupation of the control module on the hard board body. Specifically, the power module of the present application is normally designed onto the hard board body, while the control module is designed onto the soft board body, and finally the soft board body and the hard board body are welded by the control welding part and the power welding part to realize the communication connection between the control module and the power module. In this way, a lot of space occupied by the original control module can be saved on the hard board body, and the space saved can be used to further shorten the length, width and / or further increase the thickness and width of the copper foil according to the needs.
[0020] On this basis, one end of the soft board body is welded to the power welding part of one end of the hard board body through the control welding part, and the other end of the soft board body is bent toward the other end of the hard board body. In this way, the soft board body will not affect the length of the hard board body, that is, the soft board body will not exceed the end of the hard board body, or will not exceed too much, so the assembled battery protection board will not affect the later assembly process.
[0021] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0023] Figure 1 A schematic diagram showing the structure of a battery protection board according to an example of the present application is shown;
[0024] Figure 2 A schematic diagram showing the structure of a battery protection board according to another example of the present application is shown;
[0025] Figure 3 A schematic diagram showing the installation of a flexible board body and a control device according to an example of the present application is shown;
[0026] Figure 4 A schematic diagram of installing a flexible board body and a control device according to another example of the present application is shown.
[0027] Icon: 101-flexible board body; 103-control device; 104-insulating tape; 201-rigid board body; L1-length direction; L2-thickness direction. DETAILED DESCRIPTION
[0028] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.
[0029] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.
[0030] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.
[0031] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.
[0032] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.
[0033] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.
[0034] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.
[0035] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.
[0036] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.
[0037] In a first aspect, the present application provides a battery protection board, thereby solving the problem of affecting the later assembly of the battery protection board in the existing method of separately arranging the control module and the power module.
[0038] The following will refer to Figures 1 to 4 The battery protection board according to some embodiments of the present application is described in detail.
[0039] like Figure 1 and Figure 2 As shown, the battery protection board of the present application includes a soft board body 101, a hard board body 201, a control module and a power module (the control module is a low-power control circuit, which mainly plays the role of signal transmission, and the power module is a high-power power circuit, which mainly plays the role of signal and power transmission). Among them, the control module includes a control wire and a control welding part connected to the control wire (the control wire included in the control module is a low-power control wire); the power module includes a power wire and a power welding part connected to the power wire (the power wire included in the power module is a high-power control wire); the control wire and the control welding part are both arranged on the soft board body 101, and the power wire and the power welding part are both arranged on the hard board body 201; the soft board body 101 and the hard board body 201 can be welded via the control welding part and the power welding part, so that the control module and the power module are communicated and connected.
[0040] According to the above technical features, the beneficial effects of this application are:
[0041] The battery protection board of the present application designs the control module onto the soft board body 101 to reduce the occupation of the control module on the hard board body 201 .
[0042] Specifically, the power module of the present application is normally designed on the hard board body 201, and the control module is designed on the soft board body 101, and finally the soft board body 101 and the hard board body 201 are welded through the control welding part and the power welding part to realize the communication connection between the control module and the power module. In this way, a lot of space occupied by the original control module (for example, the space of the copper foil layer occupied by the control wire) can be saved on the hard board body 201, and the space saved (saved) can be further shortened according to the needs. The length, width and / or further increase the thickness and width of the copper foil.
[0043] In the embodiments of the present application, Figure 1 and Figure 2 As shown, the control welding part can be a control pad or a nickel sheet arranged on the soft board body 101, and the power welding part can be a power pad or a nickel sheet arranged on the hard board body 201; preferably, in this embodiment, the control welding part is a control pad, and the power welding part is a power pad, and the control pad and the power pad can be welded by solder paste.
[0044] It should be noted here that Figure 1 and Figure 2 The rectangular structure indicated at A in the middle is a schematic representation of the structures of the control pad, solder paste, and power pad.
[0045] In the embodiments of the present application, Figure 1 and Figure 2 As shown, the hard board body includes two ends in the length direction L1 thereof, and the soft board body includes two ends in the length direction L1 thereof.
[0046] The power pad is arranged at one end of the hard board body 201. In this way, in order to ensure that the soft board body 101 does not affect the later assembly process of the battery protection board after being welded with the hard board body 201, the soft board body 101 of the present application should not affect the length of the hard board body 201, that is, the soft board body 101 should not exceed the two ends of the hard board body 201, or should not exceed too much.
[0047] In view of this, after the soft board body 101 of the present application is welded with the hard board body 201, the soft board body 101 can be bent toward the inside of the hard board body 201 to prevent the soft board body 101 from affecting the length of the hard board. Figure 1 and Figure 2 As shown, one end of the flexible board body 101 is provided with a control pad, and the other end can be bent toward the other end of the rigid board body 201 .
[0048] As an example, Figures 1 to 4As shown, the soft board body 101 can be bent into a concave shape. The arrangement position of the concave soft board body 101 will be described in detail below.
[0049] Further, based on the above structure, Figure 3 and Figure 4 As shown, the control module also includes a plurality of control devices 103 connected to the control wires. The plurality of control devices 103 are divided into two groups. The two groups of control devices 103 are respectively arranged at both ends of the flexible board body, so that the flexible board body is conveniently bent in the middle to form a concave shape.
[0050] The concave flexible board body 101 of the present application can be installed in the following two ways.
[0051] In the first example, if Figure 1 and Figure 3 As shown, the concave portion of the concave soft board body 101 can accommodate the hard board body 201 , the two groups of control devices 103 are arranged on the outer side of the soft board body 101 , and the control pads are arranged on the inner side of the soft board body 101 .
[0052] Alternatively, if Figure 1 and Figure 3 As shown, the other end of the soft board body 101 may also be provided with a control pad, and the front and back sides of the corresponding hard board body 201 may be provided with power pads (the front and back sides of the hard board body 201 opposite to each other in the thickness direction L2). The control pad at one end of the soft board body 101 is welded to the power pad on the front side, and the control pad at the other end of the soft board body 101 is welded to the power pad on the back side. In this way, the control pads at both ends of the soft board body 101 can be welded to the power pads on the front and back sides of the hard board body 201.
[0053] In the second example, if Figure 2 and Figure 4 As shown, the two groups of control devices 103 are arranged on two opposite inner sides of the soft board body 101, that is, after the soft board body 101 is bent, the two groups of control devices 103 are arranged opposite to each other, and the control pads are arranged on the outer side of the soft board body 101, and the corresponding power pads are arranged on the front of the hard board body 201. In this way, the control pads on the outer side of the soft board body 101 can be welded with the power pads on the front of the hard board body 201. The control pads on the outer side of the soft board body 101 are welded with the power pads of the hard board body 201, and the other end of the soft board body 101 is located on the side of the soft board body 101 away from the hard board body 201. That is, after the soft board body 101 is bent into a concave structure, it is located on one side of the hard board body 201, one end is welded with the hard board body 201, and the other end is bent to the side away from the hard board body 201.
[0054] Furthermore, if Figure 2 As shown, the battery protection board also includes a soft insulating rubber strip 104 , and the insulating rubber strip 104 is arranged between the two groups of control devices 103 .
[0055] In summary, the battery protection board of the present application designs the control module onto the soft board body 101 to reduce the occupation of the control module on the hard board body 201. Specifically, the power module of the present application is normally designed onto the hard board body 201, and the control module is designed onto the soft board body 101, and finally the soft board body 101 and the hard board body 201 are welded by the control welding part and the power welding part to realize the communication connection between the control module and the power module. In this way, a lot of space occupied by the original control module (for example, the space of the copper foil layer occupied by the control wire) can be saved on the hard board body 201, and the space saved (saved) can be further shortened according to the needs. The length, width and / or further increase the thickness and width of the copper foil.
[0056] On this basis, one end of the soft board body is welded to the power welding part of one end of the hard board body through the control welding part, and the other end of the soft board body is bent toward the other end of the hard board body. In this way, the soft board body will not affect the length of the hard board body, that is, the soft board body will not exceed the end of the hard board body, or will not exceed too much, so the assembled battery protection board will not affect the later assembly process.
[0057] According to a second aspect of the present application, a battery is provided, the battery comprising the battery protection board as described above.
[0058] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that any technician familiar with this technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed in the present application, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered by the protection scope of the present application.
Claims
1. A battery protection board, characterized in that: The battery protection board includes a soft board body, a hard board body, a control module arranged on the soft board body, and a power module arranged on the hard board body; The hard board body includes two ends in the length direction thereof, and the soft board body includes two ends in the length direction thereof; The control module includes a control welding part, and the power module includes a power welding part; The control welding part is arranged at one end of the soft board body, and the power welding part is arranged at one end of the hard board body; The soft board body and the hard board body can be welded via the control welding part and the power welding part, so that the control module is communicatively connected with the power module; The other end of the soft board body can be bent toward the other end of the hard board body.
2. The battery protection board according to claim 1, characterized in that: The control module also includes a control wire connected to the control welding portion; The power module further comprises a power wire connected to the power welding portion; The control wire and the control welding part are both arranged on the soft board body, and the power wire and the power welding part are both arranged on the hard board body.
3. The battery protection board according to claim 2, characterized in that: The control welding part is a control welding pad arranged on the soft board body, and the power welding part is a power welding pad arranged on the hard board body; The control pad and the power pad can be welded.
4. The battery protection board according to claim 3, characterized in that: The control module further includes a plurality of control devices connected to the control wire, wherein the plurality of control devices are divided into two groups, and the two groups of control devices are respectively arranged at two ends of the flexible board body; At least a portion between the two ends of the soft board body can be bent.
5. The battery protection board according to claim 4, characterized in that: The soft board body can be bent into a concave shape.
6. The battery protection board according to claim 5, characterized in that: The concave portion of the concave soft board body accommodates the hard board body; The two groups of control devices are both arranged on the outer side of the soft board body facing away from the hard board body, and the control pads are arranged on the inner side of the soft board body facing the hard board body.
7. The battery protection board according to claim 6, characterized in that: The control pad is also provided at the other end of the flexible board body; The hard plate body includes a front surface and a back surface opposite to each other in the thickness direction thereof; The power pads are arranged on the front and back of the hard board body, the control pad at one end of the soft board body is welded to the power pad on the front, and the control pad at the other end of the soft board body is welded to the power pad on the back.
8. The battery protection board according to claim 5, characterized in that: The two groups of control devices are respectively arranged on two opposite inner sides of the soft board body; The control pad is arranged on the outer side of the flexible board body; The control pad on the outer side of the soft board body is welded to the power pad of the hard board body, and the other end of the soft board body is located on the side of the soft board body away from the hard board body.
9. The battery protection board according to claim 8, characterized in that: The battery protection plate also includes an insulating rubber strip; The insulating rubber strip is arranged between two groups of the control components.
10. A battery, characterized in that: The battery comprises a battery protection plate as claimed in any one of claims 1 to 9.