Battery protection board, battery and electronic equipment

Abstract

The utility model provides a battery protection board, a battery and electronic equipment. The battery protection plate comprises a protection plate body and an electric quantity measuring unit, the protection plate body comprises a first sub-plate and a second sub-plate; the first daughter board is arranged along a first direction, and the second daughter board is arranged along a second direction; the first direction is perpendicular to the second direction; the first daughter board is provided with two welding pieces, and the two welding pieces are welded with two tabs of the battery cell; and the electric quantity measuring unit is arranged on the second daughter board. According to the embodiment, the electric quantity measuring unit is arranged on the second daughter board, the size of the first daughter board can be reduced by reducing the number of devices on the first daughter board, and the size of the battery cell can be increased; moreover, the second daughter board and the first daughter board are arranged along different directions, so that heat dissipation of devices on the first daughter board and the second daughter board can be increased, and the heat dissipation efficiency of the battery protection board can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of battery technology, and more particularly to a battery protection board, a battery, and an electronic device. Background Technology

[0002] The battery power of electronic devices consists of cells and protection boards. The tabs of the cells and the solder joints of the protection boards are soldered together to provide protection for the cells.

[0003] The existing protection board is equipped with a power circuit, a protection unit, and a power detection unit. Taking the protection unit as an example, the existing protection board's protection unit is equipped with two protection circuits, each with a different protection voltage or current threshold to meet the battery's protection needs in different usage scenarios.

[0004] In practical applications, when there is a need to increase battery capacity, the size of the battery cells will be increased, which will reduce the size of the protection board and affect the heat dissipation of the protection board. Utility Model Content

[0005] This disclosure provides a battery protection board, a battery, and an electronic device to solve the aforementioned technical problems.

[0006] According to a first aspect of this disclosure, a battery protection board is provided, the battery protection board including a protection board body and a power measurement unit; the protection board body includes a first sub-board and a second sub-board; the first sub-board is disposed along a first direction and the second sub-board is disposed along a second direction; the first direction and the second direction are perpendicular to each other; the first sub-board is provided with two welding tabs, the two welding tabs being welded to two tabs of a battery cell; the power measurement unit is disposed on the second sub-board.

[0007] Optionally, the power measurement unit includes a fuel gauge, which is used to detect the cell parameters during charging and discharging.

[0008] Optionally, the battery protection board further includes a protection switch device disposed on the second sub-board; the protection switch device is connected in series on the DC bus, and the DC bus is electrically connected to the battery cell;

[0009] The protective switching device is used to switch from the on state to the off state when a control signal is received.

[0010] Optionally, when the fuel gauge has a protection function, the fuel gauge is electrically connected to the control terminal of the protection switch device;

[0011] The power meter is used to generate a control signal and send it to the protection switch when the battery cell requires protection.

[0012] Optionally, when the fuel gauge does not have a protection function, the battery protection board further includes a protection chip disposed on the second sub-board, the protection chip being electrically connected to the protection switch device;

[0013] The protection chip is used to generate a control signal and send it to the protection switch when the battery cell needs protection.

[0014] Optionally, the protection switching device includes a first switching device and a second switching device; the first switching device is connected in series on the positive busbar of the DC bus, and the second switching device is connected in parallel with the first switching device and then connected in series on the positive busbar of the DC bus.

[0015] Optionally, the protection switching device is implemented using an ultra-small packaged MOSFET or a single ultra-low internal resistance MOSFET.

[0016] Optionally, the first sub-board includes an FPC board and a support sheet; the FPC board is provided with a temperature sampling resistor and a current sampling resistor; the FPC board is disposed on the support sheet; the support sheet is used to increase the strength of the FPC board.

[0017] Optionally, the first sub-board includes a PCB board; the PCB board is provided with a temperature sampling resistor and a current sampling resistor.

[0018] Optionally, when there is only one second sub-board, the second sub-board is disposed on one side of the first sub-board and the second sub-board includes a first connecting end extending in a second direction and a second connecting end extending in a first direction; the first connecting end and the second connecting end are used to electrically connect with the connecting ends that match the motherboard, respectively.

[0019] Optionally, when there are two second sub-boards, the first second sub-board is provided with a first connection terminal and is located on the first side of the first sub-board, and the first second sub-board is provided with at least one of a fuel meter, a protection chip, and a protection switch device; the second second sub-board is provided with a second connection terminal and is located on the second side of the first sub-board, and the second second sub-board is provided with at least one of a fuel meter, a protection chip, and a protection switch device.

[0020] Optionally, the battery protection board further includes a communication interface; the communication interface is electrically connected to the fuel gauge and the motherboard respectively, and is used to enable communication between the fuel gauge and the motherboard.

[0021] According to a second aspect of this disclosure, a battery is provided, the battery comprising a cell and a battery protection board as described in any of the first aspects; the cell comprising tabs electrically connected to two welding tabs of a first sub-plate in the battery protection board.

[0022] According to a third aspect of this disclosure, an electronic device is provided, including a motherboard and a battery as described in the second aspect; the motherboard includes a charging chip, a power interface, and a communication interface; the power interface of the motherboard is electrically connected to the power interface of the battery, and the communication interface of the motherboard is electrically connected to the communication interface of the battery; the motherboard is used to obtain the cell parameters of the battery through the communication interface; the charging chip is used to protect the battery according to the cell parameters and a preset protection threshold.

[0023] Optionally, the charging chip includes a first charge pump and a second charge pump; the first charge pump is electrically connected to a first connection terminal of the battery protection board, and the second charge pump is electrically connected to a second connection terminal of the battery protection board.

[0024] Optionally, the electronic device further includes a mid-frame and a rear cover;

[0025] The battery is fixed to the middle frame by double-sided adhesive; or, the battery is fixed to the middle frame by bolts; or, the battery is fixed by pressing against the back cover.

[0026] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0027] The battery protection board provided in this embodiment includes a protection board body and a power measurement unit. The protection board body includes a first sub-board and a second sub-board. The first sub-board is arranged along a first direction, and the second sub-board is arranged along a second direction. The first direction and the second direction are perpendicular to each other. The first sub-board is provided with two welding tabs, which are welded to the two tabs of the battery cell. The power measurement unit is disposed on the second sub-board. In this embodiment, by placing the power measurement unit on the second sub-board, the size of the first sub-board can be reduced by reducing the number of components on the first sub-board, which is beneficial for increasing the size of the battery cell. Furthermore, the second sub-board is arranged in different directions from the first sub-board, which can increase the heat dissipation of the components on the first and second sub-boards, thereby improving the heat dissipation efficiency of the battery protection board.

[0028] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0029] Figure 1 This is a block diagram of a battery protection board according to an embodiment of the present disclosure.

[0030] Figure 2 This is a block diagram of another battery protection board according to an embodiment of the present disclosure.

[0031] Figure 3 This is a schematic diagram of a battery cell tab according to an embodiment of the present disclosure.

[0032] Figure 4 A circuit diagram illustrating a battery protection board with two protection circuits, as exemplified in related technologies.

[0033] Figure 5 This is a circuit diagram illustrating a protection circuit for a battery protection board according to an embodiment of the present disclosure.

[0034] Figure 6 A circuit diagram showing a protection circuit provided for another battery protection board according to an embodiment of this disclosure.

[0035] Figure 7 This is a cross-sectional view of a first sub-plate in a first direction according to an embodiment of the present disclosure.

[0036] Figure 8 This is a cross-sectional view of another first sub-plate in a first direction according to an embodiment of the present disclosure.

[0037] Figure 9 This is a schematic diagram of a signal holding unit circuit according to an embodiment of the present disclosure.

[0038] Figure 10 This is a schematic diagram of the structure of a battery protection board according to an embodiment of the present disclosure.

[0039] Figure 11 This is a schematic diagram of the structure of an electronic device according to an embodiment of the present disclosure.

[0040] Figure 12 This is a schematic diagram of the structure of another electronic device according to an embodiment of the present disclosure.

[0041] Figure 13 This is a block diagram of an electronic device according to an embodiment of the present disclosure. Detailed Implementation

[0042] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0043] To address the aforementioned technical problems, this disclosure provides a battery protection board, a battery, and an electronic device, which can be applied to electronic devices equipped with batteries, such as smartphones, tablets, smartwatches, and smart bracelets.

[0044] This disclosure provides a battery protection board, see [link to relevant documentation]. Figure 1The battery protection board 10 includes a protection board body 11 and a power measurement unit 12. Among them,

[0045] The protective plate body 11 includes a first sub-plate 111 and a second sub-plate 112; the first sub-plate 111 is disposed along a first direction and the second sub-plate 112 is disposed along a second direction; the first direction and the second direction are perpendicular to each other. The first direction can be... Figure 1 The x-axis direction shown in the example can be a second direction. Figure 1 The y-axis direction is shown in the example.

[0046] It should be noted that "the first sub-board 111 is set along the first direction" means that the length direction of the first sub-board 111 can be parallel to the first direction, or it can maintain an angle of a first preset angle (e.g., [-10, +10] degrees, adjustable). "The second sub-board 112 is set along the second direction" means that the length direction of the second sub-board 112 can be parallel to the second direction, or it can maintain an angle of a second preset angle (e.g., [-15, +15] degrees, adjustable). In other words, the angle between the first sub-board 111 and the second sub-board 112 is within the range of [-15, +15] degrees. By adjusting the positions of the first sub-board 111 and / or the second sub-board 112, the size of the first sub-board 111 is better matched to the size of the battery cell, and further, the size of the second sub-board 112 is better matched to the size of the main board.

[0047] In this embodiment, see Figure 2 The first sub-board 111 has two solder pads, A+ and A-. See [link / reference] Figure 3 The battery cell has two tabs, B+ and B-. The welding tabs A+ and A- of the first sub-board 111 are welded to the two tabs B+ and B- of the battery cell, respectively. In some possible examples, in addition to welding, riveting, bolting, or conductive adhesive bonding are all possible connection methods that can both fix and conduct electricity. Those skilled in the art can choose the appropriate connection method according to the specific scenario, and the corresponding solution falls within the protection scope of this disclosure.

[0048] In some examples, the two welding tabs A+ and A- of the first sub-board 111 can be made of conductive materials such as copper, nickel, silver or gold. As long as they can conduct electricity with the battery tabs, the corresponding solutions fall within the protection scope of this disclosure.

[0049] It should be noted that, considering the connection method between the first sub-board 111 and the cell, from the first direction (or from the length direction of the cell), the cell and the battery protection board 10 can be regarded as a planar object with its upper or lower surface parallel to the xoy plane. Therefore, when increasing the length of the cell in the second direction, the devices set on the first sub-board 111 can be transferred to the second sub-board 112, thereby reducing the length of the first sub-board 111 in the second direction.

[0050] In related technologies, the cell protection board typically has two protection circuits, see [link / reference]. Figure 4 The protection chip and the two protection chips are set with different current thresholds and / or voltage thresholds. When the protection chip or the two protection chips detect that the current current or voltage of the DC bus reaches the corresponding current threshold or voltage threshold, they can trigger at least one of the switching devices Q1 to Q4 to disconnect the battery cell from the external device and protect the battery cell.

[0051] To reduce the number of components on the battery protection board, in one embodiment, one of the aforementioned protection circuits (either one segment or two segments) is placed on the battery protection board while the other is placed on the main board, leaving only one segment of protection circuit on the battery protection board, thus achieving the effect of reducing the number of components.

[0052] In some possible examples, some components of the aforementioned protection circuit can be placed on the second sub-board 112 as much as possible, thereby reducing the number of components and wiring on the first sub-board 111 and achieving the goal of reducing the size of the first sub-board 111. For example, the power measurement unit 12 can be placed on the second sub-board 112, thereby reducing the number of components and wiring on the first sub-board 111 and achieving the goal of reducing the size of the first sub-board 111.

[0053] In some examples, the power measurement unit 12 may include a fuel gauge for testing the cell parameters during charging and discharging. These cell parameters may include at least one of cell voltage, cell charging current, cell discharging current, and remaining cell power, and can be configured according to specific scenarios; the corresponding scheme falls within the protection scope of this disclosure.

[0054] In some examples, the battery protection board also includes a protection switch device disposed on a second sub-board 112, the protection switch device being connected in series with a DC bus, the DC bus being electrically connected to the battery cell. The aforementioned protection switch device may be... Figure 4 At least one of Q1 to Q4 in the example.

[0055] In some possible examples, when the fuel gauge has a protection function, this protection function means that the fuel gauge can determine whether the battery cell is in an abnormal state based on the current and / or the current voltage. Abnormal states can include undercurrent, overcurrent, undervoltage, overvoltage, or overtemperature, and can be configured according to the specific scenario. In this example, the fuel gauge is electrically connected to the control terminal of the protection switch. In this case, the fuel gauge is used to generate a control signal and send it to the protection switch when the battery cell requires protection.

[0056] It should be noted that when the fuel gauge has a protection function, there is no need to set up a protection chip. In this case, the resistance value of the current sampling resistor can be reduced to half of that of the two-stage protection circuit, i.e., Rs = 1 / 2Rs1, where Rs1 is the resistance value of the current sampling resistor in the two-stage protection circuit. Thus, with the charging current I remaining constant, the heat loss of this example scheme is Pp1 = I^2*(Rs1 + 0.5*Rmos), where Rmos is the internal resistance of MOSFETs Q1 and Q2. The heat loss with two-stage protection circuit is Pp2 = I^2*(Rs1 + Rmos). It is evident that the heat loss of this example scheme is lower.

[0057] See Figure 5 The protection switches Q1 and Q2 are first connected in parallel and then in series on the DC bus P+. The fuel gauge can then be electrically connected to the control terminals of the protection switches Q1 and Q2. In this example, the fuel gauge, protection switches Q1 and Q2, and their associated capacitors or resistors can be mounted on the second sub-board 112, while the first sub-board 111 is equipped with a temperature sensor NTC (for detecting battery temperature) and a current sampling resistor Rs (for detecting battery current). Because the number of components on the first sub-board 111 is reduced, the size of the first sub-board 111 can be reduced; in other words, as the size of the battery cell decreases, its size increases accordingly, thereby increasing the capacity of the battery cell.

[0058] In some possible examples, when the fuel gauge does not have a protection function, the battery protection board 10 also includes a protection chip disposed on the second sub-board 112. See Figure 6 The protection chip is electrically connected to protection switches Q1 and Q2. The protection chip generates a control signal and sends it to protection switches Q1 and Q2 when the battery cell requires protection. After receiving the control signal, protection switches Q1 and Q2 switch to the off state, thereby disconnecting the battery cell from some circuits in the main board 20.

[0059] In some possible examples, the size of the devices can be reduced to decrease the size of the first daughterboard 111 or the second daughterboard 112. Taking protection switches Q1 and Q2 as examples, the protection switches can be implemented using ultra-small packaged MOSFETs, for example, the length*width*height of an ultra-small packaged MOSFET can be 1.5mm*1.5mm*0.1mm, or a MOSFET with a package size smaller than the above. Alternatively, the protection switches can be implemented using a single ultra-low internal resistance MOSFET, for example, the internal cathode of an ultra-low internal resistance MOSFET is less than or equal to 0.75 milliohms. With the reduction in device size, the size of the second daughterboard 112 will be reduced accordingly.

[0060] In some possible examples, the first sub-board 111 includes an FPC board and a support sheet. See also Figure 7The FPC board 71 is equipped with a temperature sampling resistor (NTC) and a current sampling resistor (Rs). The FPC board 71 is mounted on a support plate 72, which increases the strength of the FPC board 71. Considering that the first sub-board 111 also has welding tabs A+ and A-, the support plate 72 can have an opening area, with the welding tabs A+ and A- positioned within this opening area. In this example, by making the first sub-board 111 a flexible FPC board, the battery protection board can be appropriately bent and deformed, reducing its length in the second direction.

[0061] In some possible examples, the first daughterboard 111 includes a PCB board. See also Figure 8 The PCB board is equipped with a temperature sampling resistor NTC and a current sampling resistor Rs. In this example, the temperature sampling resistor NTC and the current sampling resistor Rs can be electrically connected to the devices on the second daughter board 112 through wiring, which helps to reduce the length of the first daughter board 111 in the second direction while accurately acquiring the cell parameters of the battery cell.

[0062] In some possible examples, the charge and discharge current of the cell may be relatively small, in which case the battery protection board 10 can be configured with a second sub-board 112. See also Figure 9 When the number of second sub-boards 112 is one, the second sub-board 112 is disposed on one side of the first sub-board 111. Figure 9 The first subboard 111 is located on the right side of the first subboard 112, and the second subboard 112 includes a first connection terminal P1 extending in a second direction and a second connection terminal P2 extending in a first direction. The first connection terminal P1 and the second connection terminal P2 are used for electrical connection with the connection terminals that match the mainboard 20, respectively. It is understood that the first connection terminal P1 can be electrically connected to the DC bus; the second connection terminal P2 can be electrically connected to the DC bus, such as the positive bus P+ (P1+, P2+) and the negative bus P- (P1-, P2-), that is, the first connection terminal P1 and the second connection terminal P2 respectively constitute two-terminal power interfaces. In this way, after the first subboard 111 is fixed with the battery cell, the second subboard 112 can extend into the area where the mainboard 20 is located, that is, the second subboard 112 is superimposed on the mainboard 20 in the third direction (i.e., the z-axis), without occupying the space of the first subboard 111 and the battery cell.

[0063] It should be noted that the second daughter board 112 can be set as an FPC board, so that the second daughter board 112 can adjust its shape according to the space of the motherboard, so that the thickness of the third side will not be increased when the second daughter board 112 and the motherboard 20 are stacked.

[0064] In some possible examples, the charging and discharging current of the battery cell may be relatively large, in which case the battery protection board 10 can be configured with two second sub-boards 112. See also Figure 10When there are two second sub-boards 112, the first second sub-board 112 is provided with a first connecting end P1 and is located on the first side of the first sub-board 111. Figure 10 (As shown on the left), and the first second sub-board 112 is provided with at least one of a power meter, a protection chip, and a protection switch device; the second second sub-board 112 is provided with a second connection terminal P2 and is located on the second side of the first sub-board (as ...). Figure 10 As shown on the right), the second sub-board 112 is equipped with at least one of a fuel gauge, a protection chip, and a protection switch. Thus, by dividing the components on the second sub-board 112 into two parts in this example, the heat dissipation area of ​​the components can be increased, reducing heat dissipation efficiency; furthermore, the greater distance between the two second sub-boards 112 reduces heat dissipation interference between them. Additionally, the reduced number of components on each second sub-board 112 simplifies manufacturing and improves the yield rate of the battery protection board.

[0065] It should be noted that the components on the second sub-board 112 can be manufactured into an integrated device using a fabrication process, or by first attaching multiple components to the PCB board and then injection molding them into an integrated device, which is then attached to the second sub-board 112. Alternatively, the surface mount points on the second sub-board 112 can be locally reinforced before attaching the individual components to the surface mount points, and finally injection molding them into an integrated device. Or, the surface mount points on the second sub-board 112 can be locally thickened and laminated to enhance hardness before attaching the individual components to the surface mount points, and finally injection molding them into an integrated device. It is understood that in this embodiment, injection molding can protect the components from mechanical stress. Furthermore, injection molding and the aforementioned reduction in component packaging or volume can ensure the dimensions of the second sub-board 112.

[0066] In some possible examples, the battery protection board 10 also includes a communication interface. See also... Figure 5 and Figure 6 The communication interface TC is electrically connected to the fuel gauge and the motherboard 20 respectively, and is used to enable communication between the fuel gauge and the motherboard.

[0067] Based on the battery protection board provided in this disclosure, this disclosure also provides a battery, see below. Figure 1 The battery includes a cell and a battery protection board 10 as described above. The cell includes tabs B+ and B-, which are electrically connected to two welding tabs A+ and A- of the first sub-board in the battery protection board, respectively. Thus, in this embodiment, the battery protection board 10 can reduce the size of the first sub-board while increasing the size of the cell, thereby increasing the cell's capacity.

[0068] Based on the battery provided in this disclosure, this disclosure also provides an electronic device, see [link to relevant documentation]. Figure 5 , Figure 6, Figure 11 and Figure 12 The electronic device includes a motherboard 20 and a battery as described above. The motherboard 20 includes a charging chip (PMIC, charge pump 1, and charge pump 2), a power interface (P+, P-), and a communication interface. The power interface of the motherboard 20 is electrically connected to the power interface of the battery, and the communication interface of the motherboard 20 is electrically connected to the communication interface of the battery. The motherboard 20 is used to obtain the battery cell parameters through the communication interface. The charging chip is used to protect the battery according to the cell parameters and a preset protection threshold. It is understood that the charging chip on the motherboard 20, as a protection circuit, together with a protection circuit on the battery protection board, constitutes two protection circuits for the battery cell, thereby meeting safety regulations.

[0069] Understandably, during operation, the fuel gauge can actually detect the voltage and current of the battery cell and report them to the processor or power management chip on the motherboard via the communication interface. When the processor determines that the charging voltage exceeds the preset voltage threshold, it notifies the charging chip to stop charging until the battery cell voltage is less than or equal to the preset voltage threshold, at which point charging resumes. The same logic applies to determining the charging current. When the processor determines that the battery cell discharge voltage exceeds the preset voltage threshold, it notifies the power management chip to cut off the discharge path and shut down the entire machine. The same logic applies to determining the discharge current.

[0070] In some possible examples, the charging chip includes a first charge pump and a second charge pump. The first charge pump is electrically connected to a first connection terminal P1 of the battery protection board, and the second charge pump is electrically connected to a second connection terminal P2 of the battery protection board. In this way, the battery cell can be quickly charged using two charge pumps, meeting the requirements for fast charging of the battery cell.

[0071] In some possible examples, the electronic device also includes a mid-frame. In this case, the battery is secured to the mid-frame using double-sided tape; alternatively, the battery is secured to the mid-frame using bolts.

[0072] In some possible examples, the electronic device also includes a back cover. In this case, the battery can be secured by pressing against the back cover.

[0073] It should be noted that the aforementioned electronic devices can be smartphones, computers, digital broadcasting terminals, tablets, medical devices, fitness equipment, personal digital assistants, etc. Based on the premise that the electronic device has the aforementioned battery, refer to... Figure 13 The electronic device 1300 may include one or more of the following components: processing component 1302, memory 1304, power supply component 1306, multimedia component 1308, audio component 1310, input / output (I / O) interface 1312, sensor component 1314, communication component 1316, and image acquisition component 1318.

[0074] Processing component 1302 typically controls the overall operation of electronic device 1300, such as operations associated with display, telephone calls, data communication, camera operation, and recording operations. Processing component 1302 may include one or more processors 1320 to execute computer programs. Furthermore, processing component 1302 may include one or more modules to facilitate interaction between processing component 1302 and other components. For example, processing component 1302 may include a multimedia module to facilitate interaction between multimedia component 1308 and processing component 1302. In one example, the processing component may include a processor configured to perform the antenna control method described above.

[0075] Memory 1304 is configured to store various types of data to support the operation of electronic device 1300. Examples of such data include computer programs of any application or method configured to operate on electronic device 1300, contact data, phone book data, messages, pictures, videos, etc. Memory 1304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0076] Multimedia component 1308 includes a screen that provides an output interface between electronic device 1300 and target object. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input information from the target object. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation.

[0077] Audio component 1310 is configured to output and / or input audio file information. For example, audio component 1310 includes a microphone (MIC) configured to receive external audio file information when electronic device 1300 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio file information may be further stored in memory 1304 or transmitted via communication component 1316. In some embodiments, audio component 1310 also includes a speaker configured to output audio file information.

[0078] I / O interface 1312 provides an interface between processing component 1302 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. In one example, I / O interface 1312 includes the aforementioned buttons.

[0079] Sensor assembly 1314 includes one or more sensors configured to provide state assessments of various aspects of electronic device 1300. For example, sensor assembly 1314 can detect the on / off state of electronic device 1300, the relative positioning of components such as the display screen and keypad of electronic device 1300, changes in the position of electronic device 1300 or a component, the presence or absence of a target object in contact with electronic device 1300, the orientation or acceleration / deceleration of electronic device 1300, and temperature changes of electronic device 1300.

[0080] Communication component 1316 is configured to facilitate wired or wireless communication between electronic device 1300 and other devices. Electronic device 1300 can access wireless networks based on communication standards, such as WiFi, 2G, 3G, 4G, 5G, or combinations thereof. In one exemplary embodiment, communication component 1316 receives broadcast information or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 1316 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0081] In an exemplary embodiment, the electronic device 1300 may be implemented by one or more application-specific integrated circuits (ASICs), digital information processors (DSPs), digital information processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0082] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0083] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A battery protection board, characterized in that, The battery protection board includes a protection board body and a power measurement unit; the protection board body includes a first sub-board and a second sub-board; the first sub-board is arranged along a first direction and the second sub-board is arranged along a second direction; the first direction and the second direction are perpendicular to each other; the first sub-board is provided with two welding tabs, and the two welding tabs are welded to the two electrodes of the battery cell; the power measurement unit is arranged on the second sub-board.

2. The battery protection board according to claim 1, characterized in that, The power measurement unit includes a fuel gauge, which is used to detect the cell parameters during charging and discharging.

3. The battery protection board according to claim 1, characterized in that, The battery protection board also includes a protection switch device disposed on the second sub-board; the protection switch device is connected in series on the DC bus, and the DC bus is electrically connected to the battery cell; The protective switching device is used to switch from the on state to the off state when a control signal is received.

4. The battery protection board according to claim 3, characterized in that, The power measurement unit includes a power meter. When the power meter has a protection function, the power meter is electrically connected to the control terminal of the protection switch device. The power meter is used to generate a control signal and send it to the protection switch when the battery cell requires protection.

5. The battery protection board according to claim 3, characterized in that, The power measurement unit includes a power meter. When the power meter does not have a protection function, the battery protection board also includes a protection chip disposed on the second sub-board. The protection chip is electrically connected to the protection switch device. The protection chip is used to generate a control signal and send it to the protection switch when the battery cell needs protection.

6. The battery protection board according to claim 3, characterized in that, The protection switching device includes a first switching device and a second switching device; the first switching device is connected in series on the positive busbar of the DC bus, and the second switching device is connected in parallel with the first switching device and then connected in series on the positive busbar of the DC bus.

7. The battery protection board according to claim 6, characterized in that, The protection switch device is implemented using an ultra-small packaged MOSFET or a single ultra-low internal resistance MOSFET.

8. The battery protection board according to claim 1, characterized in that, The first sub-board includes an FPC board and a support sheet; the FPC board is provided with a temperature sampling resistor and a current sampling resistor; the FPC board is disposed on the support sheet; the support sheet is used to increase the strength of the FPC board.

9. The battery protection board according to claim 1, characterized in that, The first sub-board includes a PCB board; the PCB board is provided with a temperature sampling resistor and a current sampling resistor.

10. The battery protection board according to claim 1, characterized in that, When there is one second sub-board, the second sub-board is disposed on one side of the first sub-board and the second sub-board includes a first connecting end extending in a second direction and a second connecting end extending in a first direction; the first connecting end and the second connecting end are used to electrically connect with the connecting ends that are respectively matched with the motherboard.

11. The battery protection board according to claim 1, characterized in that, When there are two second sub-boards, the first second sub-board is provided with a first connection terminal and is located on the first side of the first sub-board, and the first second sub-board is provided with at least one of a fuel meter, a protection chip and a protection switch device; the second second sub-board is provided with a second connection terminal and is located on the second side of the first sub-board, and the second second sub-board is provided with at least one of a fuel meter, a protection chip and a protection switch device.

12. The battery protection board according to claim 1, characterized in that, The battery protection board also includes a communication interface; the communication interface is electrically connected to the fuel gauge and the motherboard respectively, and is used to enable communication between the fuel gauge and the motherboard.

13. A battery, characterized in that, The battery includes a cell and a battery protection board as described in any one of claims 1 to 12; the cell includes a tab, which is electrically connected to two welding tabs on a first sub-board of the battery protection board.

14. An electronic device, characterized in that, The system includes a motherboard and a battery as described in claim 13; the motherboard includes a charging chip, a power interface, and a communication interface; the power interface of the motherboard is electrically connected to the power interface of the battery, and the communication interface of the motherboard is electrically connected to the communication interface of the battery. The motherboard is used to obtain the battery cell parameters through the communication interface; the charging chip is used to protect the battery according to the battery cell parameters and a preset protection threshold.

15. The electronic device according to claim 14, characterized in that, The charging chip includes a first charge pump and a second charge pump; the first charge pump is electrically connected to a first connection terminal of the battery protection board, and the second charge pump is electrically connected to a second connection terminal of the battery protection board.

16. The electronic device according to claim 14, characterized in that, The electronic device also includes a mid-frame and a rear cover; The battery is fixed to the middle frame by double-sided adhesive; or, the battery is fixed to the middle frame by bolts; or, the battery is fixed by pressing against the back cover.

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