Mainboard and electronic equipment

Abstract

The utility model provides a main board and electronic equipment. The main board comprises a carrier board; the charging circuit is used for being connected with a charging device; the battery interface is used for connecting a battery; the metal sheet is positioned between the charging circuit and the battery interface and is used for representing charging parameters provided for the battery interface by the charging circuit; the charging circuit, the battery interface and the metal sheet are arranged on the carrier plate.

Description

Technical Field

[0001] The present application relates to the technical field of motherboards, and in particular to a motherboard and an electronic device. Background Art

[0002] The electronic device (such as a laptop computer) has a battery and is provided with a sampling resistor connected to the battery. The sampling resistor is used to obtain the current entering the battery when charging the battery.

[0003] Currently, the sampling resistor needs to be separately set and configured with a line connected to the battery, and the separately set sampling resistor will generate additional heat during the sampling process, thereby causing the temperature of the electronic device to be high. Utility Model Content

[0004] The present application provides a motherboard and an electronic device, and the technical solution is as follows:

[0005] In a first aspect, the present application provides a mainboard, which includes:

[0006] Carrier plate;

[0007] A charging circuit, used for connecting to a charging device;

[0008] Battery interface, used to connect the battery;

[0009] A metal sheet, located between the charging circuit and the battery interface, and used to characterize the charging parameters provided by the charging circuit to the battery interface;

[0010] The charging circuit, the battery interface and the metal sheet are arranged on the carrier board.

[0011] In some modified embodiments of the first aspect of the present application, the metal sheet meets the target impedance.

[0012] In some modified embodiments of the first aspect of the present application, the carrier plate has a first accommodating space, the size of the first accommodating space matches the first size of the metal sheet and the depth of the first accommodating space matches the first thickness of the metal sheet; wherein the metal sheet consisting of the first size and the first thickness meets the target impedance, and the first accommodating space is used to accommodate the metal sheet consisting of the first size and the first thickness.

[0013] In some modified embodiments of the first aspect of the present application, the carrier plate has a second accommodating space, the size of the second accommodating space matches the second size of the metal sheet and the depth of the second accommodating space is lower than the second thickness of the metal sheet; wherein the metal sheet consisting of the second size and the second thickness meets the target impedance, and the second accommodating space is a residual space between the charging circuit and the battery interface to avoid other components.

[0014] In some modified embodiments of the first aspect of the present application, the first side of the metal sheet is connected to the charging circuit, the second side of the metal sheet is connected to the battery interface, and the charging circuit provides a charging current that is transmitted from the metal sheet to the battery interface.

[0015] In some modified embodiments of the first aspect of the present application, the main board may further include: a voltage detection circuit arranged on the carrier board, connected to the first side of the metal sheet, and connected to the second side of the metal sheet.

[0016] In some modified embodiments of the first aspect of the present application, the mainboard may further include: a memory storing the actual impedance of the metal sheet.

[0017] In some modified embodiments of the first aspect of the present application, the voltage detection circuit is a voltage detection module of a fuel meter chip, the fuel meter chip is arranged on the carrier board, and the fuel meter chip outputs a charging current and / or charging voltage provided to the battery interface.

[0018] In a second aspect, the present application provides an electronic device, comprising

[0019] A charging interface, used to connect to a charging adapter via wired or wireless means;

[0020] A charging circuit connected to the charging interface;

[0021] Battery;

[0022] The metal sheet is located between the charging circuit and the battery and is used to characterize the charging parameters provided by the charging circuit to the battery.

[0023] In some modified embodiments of the second aspect of the present application, the electronic device may further include:

[0024] a fuel gauge chip, wherein the fuel gauge chip outputs a charging current and / or a charging voltage provided to the battery;

[0025] The charging circuit, the metal sheet and the fuel gauge chip are arranged on a carrier board, and / or the metal sheet meets the target impedance, and the actual impedance of the metal sheet is stored in a memory.

[0026] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 Schematic diagram of the structure of the motherboard provided in the embodiment of the present application Figure 1 ;

[0029] Figure 2 A schematic diagram of the structure of the main board provided in the embodiment of the present application (when the actual impedance of the metal sheet is detected) Figure 2 .

[0030] Description of reference numerals:

[0031] 101. Main board; 102. Carrier board; 103. Charging circuit; 104. Battery interface; 105. Metal sheet; 106. Voltage detection circuit; 107. Memory. DETAILED DESCRIPTION

[0032] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0033] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0034] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0035] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0036] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0037] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0038] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0039] The electronic device (such as a laptop computer) has a battery and is provided with a sampling resistor connected to the battery. The sampling resistor is used to obtain the current entering the battery when charging the battery.

[0040] At present, the sampling resistor needs to be separately set and configured with a line connected to the battery, and the separately set sampling resistor will generate additional heat during the sampling process, thereby causing the temperature of the electronic device to be high. If the heat generated by the sampling resistor is reduced by reducing the resistance value of the sampling resistor, the cost of the sampling resistor will increase due to the small size and precision manufacturing of the sampling resistor. For this reason, the present application creatively reuses the metal sheet 105 connected to the battery on the mainboard 101 as a sampling resistor, thereby reducing the probability of additional heat generation, thereby reducing the temperature of the electronic device and reducing the manufacturing cost.

[0041] First aspect

[0042] The present application embodiment provides a main board 101, see Figure 1 and Figure 2 As shown, the main board 101 includes: a carrier board 102, a charging circuit 103, a battery interface 104 and a metal sheet 105. The charging circuit 103 is used to connect to a charging device; the battery interface 104 is used to connect a battery; the metal sheet 105 is located between the charging circuit 103 and the battery interface 104, and is used to characterize the charging parameters provided by the charging circuit 103 to the battery interface 104; the charging circuit 103, the battery interface 104 and the metal sheet 105 are arranged on the carrier board 102.

[0043] That is to say, the metal sheet 105 is connected to the charging circuit 103 and the battery interface 104 respectively, and the charging circuit 103 can be connected to the charging device, and the battery interface 104 can be connected to the battery. In this way, when the charging circuit 103 is connected to the charging device and the battery interface 104 is connected to the battery, the charging device can provide current to the battery through the charging circuit 103, the metal sheet 105 and the battery interface 104 to charge the battery; at the same time, the charging parameter provided by the charging circuit 103 to the battery interface 104 can also be determined according to the set resistance value of the metal sheet 105. The charging parameter can be a charging current or a charging voltage. In this way, the metal sheet 105 transmits the current provided by the charging circuit 103 to the battery interface 104 to be used as a current transmission line, and can also be reused to be used as a sampling resistor, so that it does not need to be set separately to reduce costs and reduce the probability of additional heat generation. Compared with small and precise sampling resistors, the metal sheet 105 has a simple manufacturing process and low cost.

[0044] Here, the motherboard 101 can be set in a laptop computer, an all-in-one computer, a host part of a desktop computer, a tablet computer, or other electronic devices. The charging circuit 103, the metal sheet 105, and the battery interface 104 can all be as shown in FIG. Figure 1The arrangement shown in is on the carrier board 102 to improve the integration of the motherboard 101. Of course, other circuits or components can also be arranged on the carrier board 102, for example: the carrier board 102 is provided with a switch circuit that can control the power on and off of the electronic device where the motherboard 101 is located; for example: the motherboard 101 is provided with a BIOS (Basic Input Output System) chip that can input and output signals to the electronic device where the motherboard 101 is located. The charging circuit 103 can be a connecting line, and the charging device can be a device that can transmit current, such as a charging adapter. The battery interface 104 can be an interface structure into which the battery connector can be inserted. The metal sheet 105 can be a sheet structure in a circular, rectangular or other shape, and is made of metal material, for example: see Figure 1 and Figure 2 As shown, the metal sheet 105 is a rectangular copper sheet structure.

[0045] In some embodiments, the metal sheet 105 meets the target impedance. Thus, the size (i.e., the area size composed of the length and width) and thickness of the metal sheet 105 can be designed under the requirement of the target impedance. Figure 1 and Figure 2 As shown, the metal sheet 105 is a copper sheet made of copper material, and the length, width and thickness of the copper sheet are designed so that the resistance of the copper sheet is equal to 1 milliohm.

[0046] In some embodiments, see Figure 1 and Figure 2 As shown, the carrier plate 102 has a first accommodating space, the size of the first accommodating space matches the first size of the metal sheet 105 and the depth of the first accommodating space matches the first thickness of the metal sheet 105; wherein, the metal sheet 105 consisting of the first size and the first thickness meets the target impedance, and the first accommodating space is used to accommodate the metal sheet 105 consisting of the first size and the first thickness.

[0047] That is, the first size of the metal sheet 105 is the area size formed by the length and width of the metal sheet 105, and the length, width and depth of the first accommodation space are the same as the length, width and thickness of the metal sheet 105, so that the metal sheet 105 that meets the target impedance can be accommodated in the first accommodation space and fixed relative to the first accommodation space. Here, the first accommodation space can be a surface of any area between the charging circuit 103 and the battery interface 104 on one side surface of the carrier plate 102 or a groove opened on it, for example: see Figure 1 and Figure 2 As shown, the first accommodating space is a surface of a middle area between the charging circuit 103 and the battery interface 104 on the carrier plate 102 .

[0048] In other embodiments, the carrier plate 102 has a second accommodation space, the size of the second accommodation space matches the second size of the metal sheet 105 and the depth of the second accommodation space is lower than the second thickness of the metal sheet 105; wherein the metal sheet 105 consisting of the second size and the second thickness meets the target impedance, and the second accommodation space is a remaining space between the charging circuit 103 and the battery interface 104 to avoid other components. That is, when the metal sheet 105 meeting the target impedance is arranged in the second accommodation space, the metal sheet 105 protrudes from the second accommodation space. For example: other components are arranged on the surface between the charging circuit 103 and the battery interface 104 on an existing carrier plate 102, and at least one area is left between the other components without other components to form a second accommodating space, and the second dimension of the metal sheet 105 is an area dimension formed by the length and width, and the length and width of the metal sheet 105 are the same as the length and width of the second accommodating space, but the thickness of the metal sheet 105 is greater than the depth of the second accommodating space, so that the metal sheet 105 that meets the target impedance is arranged in the second accommodating space and partially protrudes outside the second accommodating space.

[0049] In specific implementation, the metal sheet 105 that meets the target impedance can be accommodated by setting a first accommodating space that matches the size of the metal sheet 105 that meets the target impedance, or by changing the size of the metal sheet 105 to adapt to the existing second accommodating space while meeting the target impedance. In this way, a variety of setting options can be provided.

[0050] In some embodiments, see Figure 1 and Figure 2 As shown, the first side of the metal sheet 105 is connected to the charging circuit 103, the second side of the metal sheet 105 is connected to the battery interface 104, and the charging circuit 103 provides a charging current that is transmitted from the metal sheet 105 to the battery interface 104. Here, the first side and the second side are two sides of the metal sheet 105 that are opposite to each other, and the first side of the metal sheet 105 is connected to the charging circuit 103, and the second side of the metal sheet 105 is connected to the battery interface 104, so that the charging circuit 103 and the battery interface 104 are respectively located on two sides of the metal sheet 105 that are opposite to each other, so as to avoid the probability of the charging circuit 103 and the battery interface 104 interfering with each other during assembly.

[0051] In some embodiments, see Figure 1 and Figure 2As shown, the main board 101 may further include: a voltage detection circuit 106 arranged on the carrier board 102, connected to the first side of the metal sheet 105, and connected to the second side of the metal sheet 105. That is, the carrier board 102 may also be provided with a voltage detection circuit 106, and the input end and the output end of the voltage detection circuit 106 may be connected to the first side and the second side of the metal sheet 105 respectively, so that the voltage detection circuit 106 and the metal sheet 105 form a detection loop, so that the voltage drop through the metal sheet 105 can be detected by the voltage detection circuit 106.

[0052] In some embodiments, see Figure 2 As shown, a memory 107 storing the actual impedance of the metal sheet 105. That is, the main board 101 may also be provided with a memory 107 to store the actual impedance of the metal sheet 105 detected by the voltage detection circuit 106 and other detection structures, so that the actual impedance of the metal sheet 105 can be recorded. The memory 107 may be as follows: Figure 2 The non-volatile memory shown in FIG. 1 may also be other types of storage structures.

[0053] In some embodiments, the voltage detection circuit 106 is a voltage detection module of a fuel gauge chip, the fuel gauge chip is arranged on the carrier board 102, and the fuel gauge chip outputs a charging current and / or a charging voltage provided to the battery interface 104. In this way, the fuel gauge chip can be assembled on the carrier board 102 so that its voltage detection module serves as the voltage detection circuit 106, which makes the main board 101 easier to manufacture.

[0054] In one example, see Figure 1 and Figure 2 As shown, the main board 101 includes:

[0055] Carrier plate 102;

[0056] A charging circuit 103 is provided on the carrier board 102 and is used to connect with a charging device;

[0057] A battery interface 104 is provided on the carrier board 102 and is used to connect a battery;

[0058] The metal sheet 105 is a 1 milliohm metal sheet 105 of a first size and a first thickness. The first side of the metal sheet 105 is connected to the charging circuit 103. The second side of the metal sheet 105 is connected to the battery interface 104. The charging circuit 103 provides a charging current which is transmitted from the metal sheet 105 to the battery interface 104. The metal sheet 105 is used to characterize the charging parameters provided by the charging circuit 103 to the battery interface 104. The metal sheet 105 is a section of copper on the carrier board 102.

[0059] The voltage detection circuit 106 disposed on the carrier board 102 is connected to the first side of the metal sheet 105 and to the second side of the metal sheet 105 .

[0060] The memory 107 stores the actual impedance of the metal sheet 105 , and the memory 107 is a non-volatile memory.

[0061] Here, because the impedance of the copper sheet will have a certain error, it is necessary to calibrate the impedance of the copper sheet, which can be done by Figure 2 The high-precision ammeter shown in the figure allows a fixed and accurate current value to pass through the metal sheet 105, and then the voltage drop through the metal sheet 105 is recorded by the high-precision voltmeter, and then the electronic device or other electronic device where the mainboard 101 is located determines the actual impedance of the metal sheet 105 through the current value and the voltage drop, and stores it in the memory 107. When the actual impedance is inconsistent with the target impedance, the impedance of the metal sheet 105 can be adjusted, for example, by replacing the metal sheet 105.

[0062] Second aspect

[0063] An embodiment of the present application provides an electronic device, which includes: a charging interface, a charging circuit 103, a battery and a metal sheet 105, wherein the charging interface is used to connect to a charging adapter via a wired or wireless method; the charging circuit 103 is connected to the charging interface; the metal sheet 105 is located between the charging circuit 103 and the battery, and is used to characterize the charging parameters provided to the battery by the charging circuit 103.

[0064] That is to say, the metal sheet 105 is located between the charging circuit 103 and the battery, connected to the charging interface through the charging circuit 103, and connected to the battery, and the charging interface can be connected to the charging adapter, so that when the charging interface and the charging adapter are connected, the current of the charging adapter can provide current to the battery through the charging interface, the charging circuit 103 and the metal sheet 105 to charge the battery; at the same time, the charging parameters provided by the charging circuit 103 to the battery can also be determined according to the set resistance value of the metal sheet 105, and the charging parameters can be charging current or charging voltage. In this way, the metal sheet 105 transmits the current provided by the charging circuit 103 to the battery to be used as a current transmission line, and can also be reused to be used as a sampling resistor, so that there is no need to set it separately to reduce costs and reduce the probability of additional heat generation. Compared with small and precise sampling resistors, the metal sheet 105 has a simple manufacturing process and low cost.

[0065] Here, the electronic device may be a laptop computer, an all-in-one computer, a host part of a desktop computer, a tablet computer, or other electronic device. The charging circuit 103 may be a connecting line. The metal sheet 105 may be a sheet structure in a circular, rectangular, or other shape, and may be made of a metal material. For example, the metal sheet 105 may be a rectangular copper sheet.

[0066] In some embodiments, the electronic device may further include: a fuel meter chip, which outputs a charging current and / or a charging voltage provided to the battery; wherein the charging circuit 103, the metal sheet 105 and the fuel meter chip are arranged on the carrier board 102, and / or the metal sheet 105 meets the target impedance, and the actual impedance of the metal sheet 105 is stored in the memory 107.

[0067] The voltage detection module of the fuel gauge chip is a voltage detection circuit 106, which is connected to the first side of the metal sheet 105 and to the second side of the metal sheet 105, so that the voltage detection circuit 106 and the metal sheet 105 form a detection loop. In this way, the voltage detection circuit 106 can detect the voltage drop across the metal sheet 105, and thus the charging current and / or charging voltage provided to the battery can be obtained.

[0068] The charging circuit 103, the metal sheet 105 and the power meter chip are arranged on the carrier board 102 to improve the integration of the internal structure of the electronic device. Of course, other circuits or components can also be arranged on the carrier board 102. For example, the carrier board 102 is provided with a power on / off circuit that can control the power on and off of the electronic device where the motherboard 101 is located; for example, the motherboard 101 is provided with a BIOS (Basic Input Output System) chip that can input and output signals to the electronic device where the motherboard 101 is located.

[0069] When the metal sheet 105 meets the target impedance, the size (i.e., the area size composed of the length and width) and thickness of the metal sheet 105 can be designed under the target impedance requirement. The actual impedance of the metal sheet 105 is stored in the memory 107 so that the actual impedance of the metal sheet 105 can be recorded.

[0070] It should be noted that the motherboard in the electronic device provided in the embodiment of the present application is similar to the description of the motherboard embodiment described above, and has similar beneficial effects as the motherboard embodiment described above. For technical details not disclosed in the electronic device embodiment of the present application, please refer to the description of the motherboard embodiment in the present application for understanding, and no further description will be given here.

[0071] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0072] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A motherboard, characterized in that: include: Carrier plate; A charging circuit, used for connecting to a charging device; Battery interface, used to connect the battery; A metal sheet, located between the charging circuit and the battery interface, and used to characterize the charging parameters provided by the charging circuit to the battery interface; The charging circuit, the battery interface and the metal sheet are arranged on the carrier board.

2. The mainboard according to claim 1, characterized in that: The metal sheet meets the target impedance.

3. The mainboard according to claim 2, characterized in that: The carrier plate has a first accommodating space, the size of the first accommodating space matches the first size of the metal sheet and the depth of the first accommodating space matches the first thickness of the metal sheet; wherein the metal sheet consisting of the first size and the first thickness meets the target impedance, and the first accommodating space is used to accommodate the metal sheet consisting of the first size and the first thickness.

4. The mainboard according to claim 2, characterized in that: The carrier plate has a second accommodating space, the size of the second accommodating space matches the second size of the metal sheet and the depth of the second accommodating space is lower than the second thickness of the metal sheet; wherein the metal sheet consisting of the second size and the second thickness meets the target impedance, and the second accommodating space is a remaining space between the charging circuit and the battery interface to avoid other components.

5. The mainboard according to claim 1, characterized in that: The first side of the metal sheet is connected to the charging circuit, the second side of the metal sheet is connected to the battery interface, and the charging circuit provides a charging current which is transmitted from the metal sheet to the battery interface.

6. The mainboard according to claim 5, characterized in that: Also includes: The voltage detection circuit arranged on the carrier board is connected to the first side of the metal sheet and to the second side of the metal sheet.

7. The mainboard according to claim 6, characterized in that: Also includes: A memory storing the actual impedance of the metal sheet.

8. The mainboard according to claim 6, characterized in that: The voltage detection circuit is a voltage detection module of a fuel gauge chip. The fuel gauge chip is arranged on the carrier board. The fuel gauge chip outputs a charging current and / or a charging voltage provided to the battery interface.

9. An electronic device, characterized in that: include A charging interface, used to connect to a charging adapter via wired or wireless means; A charging circuit connected to the charging interface; Battery; The metal sheet is located between the charging circuit and the battery and is used to characterize the charging parameters provided by the charging circuit to the battery.

10. The electronic device according to claim 9, characterized in that: Also includes: a fuel gauge chip, wherein the fuel gauge chip outputs a charging current and / or a charging voltage provided to the battery; The charging circuit, the metal sheet and the fuel gauge chip are arranged on a carrier board, and / or the metal sheet meets the target impedance, and the actual impedance of the metal sheet is stored in a memory.

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