Power supply circuit of voltameter, battery, electronic equipment and power supply method

Abstract

The invention discloses a power supply circuit of a voltameter, a battery, electronic equipment and a power supply method, and belongs to the technical field of circuits. The power supply circuit comprises a battery used for providing a first voltage; a voltameter; the boosting module is connected with the battery and the voltameter, and the boosting module is used for boosting the first voltage to obtain a second voltage and providing the second voltage for the voltameter to supply power to the voltameter. According to the scheme, the first voltage is boosted through the external boosting module and supplied to the voltameter for power supply, it is guaranteed that the voltameter continues to work under the condition of lower battery voltage, the situation of data loss of the voltameter is reduced, and the working stability of the voltameter is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit, in particular to a power supply circuit of a power gauge, a battery, an electronic device and a power supply method. BACKGROUND

[0002] With the development of science and technology, various electronic devices appear in people's daily life, and the electronic devices are usually powered by batteries.

[0003] At present, in order to ensure the normal work of the battery, an electric gauge is designed for the battery in most electronic devices to monitor the voltage of the battery in real time. The power supply mode of these power gauges is generally single, which is easy to cause insufficient support for the normal work of the power gauge, resulting in data loss of the power gauge, abnormal display of the power display and other problems. SUMMARY

[0004] In order to solve the problems in the related art, reduce the data loss of the power gauge, and improve the stability of the power gauge, the embodiments of the present application provide a power supply circuit of a power gauge, a battery, an electronic device and a power supply method. The technical solution is as follows:

[0005] In one aspect, the present application provides a power supply circuit of a power gauge, which comprises:

[0006] a battery for providing a first voltage;

[0007] a power gauge;

[0008] a boost module connected with the battery and the power gauge respectively, the boost module being configured to boost the first voltage to obtain a second voltage and provide the second voltage to the power gauge for power supply.

[0009] In another aspect, the present application provides a battery comprising a battery cell and a power gauge, the battery comprising a first pin and a second pin.

[0010] The battery is configured to provide a first voltage to a boost module through the first pin.

[0011] The battery is further configured to provide the first voltage to the power gauge through the first pin, or receive a second voltage obtained by boosting the first voltage by the boost module through the second pin for power supply of the power gauge.

[0012] In another aspect, the present application provides an electronic device comprising the power supply circuit of the power gauge according to the above aspect, or comprising the battery according to the above aspect.

[0013] In another aspect, the application provides a power supply method, the method comprising:

[0014] obtaining a first voltage provided by a battery;

[0015] in the case that the first voltage provided by the battery is less than a target voltage, supplying power to the power gauge by a second voltage output by a voltage boosting module, the voltage boosting module being connected to the battery and the power gauge respectively, the voltage boosting module being configured to boost the first voltage to obtain the second voltage;

[0016] in the case that the first voltage provided by the battery is greater than or equal to the target voltage, supplying power to the power gauge by the first voltage output by the battery.

[0017] The technical scheme provided by the embodiments of the application has at least the following beneficial effects:

[0018] The power supply circuit of the power gauge provided by the application comprises a battery, a power gauge and a voltage boosting module. The battery provides a first voltage, the voltage boosting module is connected to the battery and the power gauge respectively, the voltage boosting module is configured to boost the first voltage to obtain a second voltage and provide the second voltage to the power gauge to supply power to the power gauge. The first voltage is boosted by the external voltage boosting module and provided to the power gauge to supply power to the power gauge, which ensures that the power gauge continues to work under a lower battery voltage, reduces the data loss of the power gauge and improves the stability of the power gauge. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0020] Figure 1 is a circuit structure schematic diagram of a power gauge provided by an exemplary embodiment of the application;

[0021] Figure 2 is a structure schematic diagram of a power supply circuit of a power gauge provided by an exemplary embodiment of the application;

[0022] Figure 3 is another structure schematic diagram of a power supply circuit of a power gauge provided by an exemplary embodiment of the application;

[0023] Figure 4 is another structure schematic diagram of a power supply circuit of a power gauge provided by an exemplary embodiment of the application; Figure 3 ​

[0024] Figure 5 is a circuit structure schematic diagram of a selection module related to an exemplary embodiment of the present application Figure 4

[0025] Figure 6 is a circuit structure schematic diagram of several selection modules related to an exemplary embodiment of the present application

[0026] Figure 7 is a circuit structure schematic diagram of a power supply circuit of another power meter related to an exemplary embodiment of the present application Figure 4

[0027] Figure 8 is a circuit structure schematic diagram of a power supply circuit of another power meter related to an exemplary embodiment of the present application Figure 4

[0028] Figure 9 is a circuit structure schematic diagram of a power supply circuit of another power meter related to an exemplary embodiment of the present application Figure 4

[0029] Figure 10 is a circuit structure schematic diagram of a power supply circuit of another power meter related to an exemplary embodiment of the present application

[0030] Figure 11 is a circuit structure schematic diagram of a power supply circuit of another power meter related to an exemplary embodiment of the present application Figure 2

[0031] Figure 12 is a circuit structure schematic diagram of a power supply circuit of a battery provided by an exemplary embodiment of the present application

[0032] Figure 13 is a structure schematic diagram of an electronic device provided by an exemplary embodiment of the present application

[0033] Figure 14 is a structure schematic diagram of a power supply circuit of a power meter applied in a mobile phone related to an exemplary embodiment of the present application

[0034] Figure 15 is a method flow schematic diagram of a power supply method of a power meter provided by an exemplary embodiment of the present application DETAILED DESCRIPTION

[0035] ​​​​​The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, like reference numerals refer to like elements unless indicated otherwise. The following exemplary embodiments described herein represent the best currently known modes of implementing aspects of the application. Thus, the exemplary embodiments described herein are not intended to represent all implementations in accordance with an aspect of the present application. Rather, they are merely examples of apparatuses and methods in accordance with some aspects of the present application as detailed in the appended claims.

[0036] The "multiple" mentioned in the present document refers to two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. The character " / " generally represents an "or" relationship between the front and rear associated objects.

[0037] The scheme provided in the present application can be used in the real scene of detecting the battery voltage through the power gauge in the daily life of people using electronic devices with a power gauge. In order to facilitate understanding, the application scenarios related to the embodiments of the present application will be briefly introduced as follows.

[0038] With the development of science and technology, various electronic devices appear in people's daily life, and people can use electronic devices for entertainment, learning, etc. Among them, these electronic devices are usually powered by batteries, and a power gauge is usually used in the related circuit of the battery power supply. The battery voltage, remaining capacity, power percentage, battery temperature, etc. are monitored based on the power gauge to meet the corresponding needs.

[0039] For example, please refer to Figure 1 , which shows a circuit structure diagram related to a power gauge provided by an example embodiment of the present application. As Figure 1 shown, it contains a battery 101, a power gauge 102, a protection circuit 103, and a mainboard 104.

[0040] In Figure 1 , the battery 101 outputs voltage through the positive electrode to the mainboard 104, and returns from the mainboard 104 to the negative electrode of itself to form a complete loop. On the path from the positive electrode of the battery 101 to the mainboard 104, two branches are drawn, which are connected with the Vbat pin and the Vbat_SNS pin of the power gauge 102 respectively, and the ground pin (GND) of the power gauge 102 is connected with the negative electrode of the battery. Among them, the main function of the Vbat pin of the power gauge 102 is to supply power for the power gauge, and the Vbat_SNS pin of the power gauge 102 is used for battery voltage detection. The protection circuit 103 is used for protecting the battery, including over-discharge protection, short-circuit protection, etc., to ensure the normal work of the battery.

[0041] With the development of battery technology, in order to improve the discharge capacity of the battery, the battery inside the electronic device can be discharged to a lower voltage (such as 1.5V or lower), and the power meter and other devices are limited by the chip process, and the minimum working voltage is usually 2V. If the power supply is still carried out according to the circuit shown in the above Figure 1 When the battery voltage is lower than 2V, it is not enough to support the normal work of the power meter, causing the power meter to lose power and the data of the power meter to be lost, and the power display to be abnormal. Therefore, a new power supply scheme is needed to solve the problems existing in the above scheme.

[0042] In order to solve the problems in the related art, reduce the data loss of the power meter, and improve the stability of the power meter. The power supply circuit of the power meter provided by the present application can use the boost module to boost the voltage provided by the battery, and then provide power to the power meter, so that the power meter can work stably while meeting the lower discharge requirement of the battery.

[0043] Please refer to Figure 2 , which shows a structure diagram of a power supply circuit of a power meter provided by an example embodiment of the present application. As Figure 2 shown, the power supply circuit 200 includes a battery 201, a power meter 202 and a boost module 203.

[0044] Among them, the boost module 203 is connected with the battery 201 and the power meter 202 respectively, and the connection relationship is as Figure 2 shown.

[0045] In the process of normal work of the power supply circuit, the battery 201 is used to provide a first voltage, the boost module 203 is used to boost the first voltage to obtain a second voltage, and the second voltage is provided to the power meter 202 to supply power to the power meter 202. By setting the boost module outside the battery and the power meter to boost the first voltage provided by the battery, and then providing the second voltage obtained by boosting to the power meter for power supply, the power meter continues to work under the condition of lower battery voltage, and the data loss of the power meter is reduced.

[0046] In summary, the power supply circuit of the power meter provided by the present application includes a battery, a power meter and a boost module. The battery provides a first voltage, the boost module is connected with the battery and the power meter respectively, and the boost module is used to boost the first voltage to obtain a second voltage, and the second voltage is provided to the power meter to supply power to the power meter. By boosting the first voltage outside the boost module and providing power to the power meter, the power meter continues to work under the condition of lower battery voltage, and the data loss of the power meter is reduced, and the stability of the power meter is improved.

[0047] In the following, the power gauge is also connected with the battery. In addition to providing the second voltage to the power gauge for power supply, the power supply circuit of the power gauge can also provide the first voltage provided by the battery directly to the power gauge for power supply when the first voltage provided by the battery is large, thereby improving the flexibility of the power gauge working.

[0048] Please refer to Figure 3 which shows a structure diagram of another power supply circuit of a power gauge provided by an example embodiment of the present application. As shown in Figure 3 , the power supply circuit 300 includes a battery 301, a power gauge 302 and a boost module 303.

[0049] The battery 301 is connected with the boost module 303, and the battery 301 is also connected with the power gauge 302. The power gauge is also connected with an output end of the boost module 303. The battery 301 can provide the first voltage to the boost module 303, and the boost module 303 can perform boost processing on the first voltage to obtain the second voltage, which is output from the output end of the boost module 303 connected with the power gauge. Figure 3

[0050] Optionally, in the embodiment, the battery 301 is also connected with the power gauge 302, and the first voltage can be provided to the power gauge 302 through the circuit connected with the power gauge 302.

[0051] In the working process of the power supply circuit 300, the power gauge 302 is also used for working based on the second voltage when the first voltage provided by the battery 301 is less than a target voltage, or working based on the first voltage when the first voltage provided by the battery 301 is greater than or equal to the target voltage. The target voltage can be set in advance by a developer, or can be the working voltage of a certain node in the power supply circuit 300. That is, in the working process of the power supply circuit 300, the power gauge can be controlled to work based on the first voltage or the second voltage based on the size relationship between the first voltage provided by the battery 301 and the target voltage. For example, the power gauge works based on the second voltage when the first voltage provided by the battery is less than the target voltage, and works based on the first voltage when the first voltage provided by the battery is greater than or equal to the target voltage.

[0052] ​Optionally, in order to control the different power supply methods mentioned above, the power supply circuit further includes a selection module; the fuel gauge is connected to the battery through the selection module, and the selection module is also connected to the boost module; the selection module is used to conduct the first path between the boost module and the fuel gauge when the first voltage provided by the battery is less than the target voltage, so that the second voltage output by the boost module powers the fuel gauge; the selection module is also used to conduct the second path between the battery and the fuel gauge when the first voltage provided by the battery is greater than or equal to the target voltage, so that the first voltage output by the battery powers the fuel gauge.

[0053] Please refer to Figure 4 It illustrates an exemplary embodiment of this application relating to Figure 3 A schematic diagram of the power supply circuit for another type of fuel gauge. (See diagram below.) Figure 4 As shown, the power supply circuit 400 includes a battery 401, a fuel gauge 402, a selection module 403, and a boost module 404. For example... Figure 4 As shown, battery 401 supplies power to boost module 404 via line 1. Boost module 404 boosts the first voltage provided by battery 401 and provides it to selection module 403 via line 2. Battery 401 also provides the first voltage to selection module 403 via line 3. Based on the relationship between the first voltage and the target voltage, selection module 403 conducts its internal circuitry to ensure that when the first voltage provided by battery is less than the target voltage, it connects the first path between boost module 404 and fuel gauge 402 to supply the second voltage to the fuel gauge. When the first voltage provided by battery is greater than or equal to the target voltage, it connects the second path between battery 401 and fuel gauge 402 to supply the first voltage to the fuel gauge 402.

[0054] In one possible implementation, the selection module includes a first switching unit and a second switching unit. The first switching unit is disposed on a first path, and the second switching unit is disposed on a second path. When the first voltage provided by the battery is less than the target voltage, the first switching unit is used to turn on the first path, and the second switching unit is used to turn off the second path. When the first voltage provided by the battery is greater than or equal to the target voltage, the first switching unit is used to turn off the first path, and the second switching unit is used to turn on the second path. In other words, the selection module controls the switching of the first and second paths by setting different switching units.

[0055] Please refer to Figure 5 It illustrates an exemplary embodiment of this application relating to Figure 4 A schematic diagram of the circuit structure of a selection module. For example... Figure 5As shown, in the selection module 500, a first switch unit 501 and a second switch unit 502 are included. The first switch unit 501 is arranged on the first path, and the second switch unit is arranged on the second path. When the first voltage provided by the battery is less than the target voltage, the first switch unit is closed to turn on the first path, and the second switch unit is opened to turn off the second path, so as to realize that the second voltage output by the boost module is used to supply power to the power gauge. When the first voltage provided by the battery is greater than or equal to the target voltage, the first switch unit is opened to turn off the first path, and the second switch unit is closed to turn on the second path, so as to realize that the first voltage output by the battery is used to supply power to the power gauge. Through the above selection module, the required path can be flexibly turned on, so as to realize the two power supply modes.

[0056] In a possible implementation manner, the first switch unit can be any one of a diode device, a triode device, and a field effect tube device; and the second switch unit can also be any one of a diode device, a triode device, and a field effect tube device. For details, refer to Figure 6 FIG. 1 shows circuit structure diagrams of several selection modules involved in an example embodiment of the present application. As shown in Figure 6 As shown in (a), the first switch tube and the second switch tube in the selection module 601 are diode devices respectively. Figure 6 As shown in (b), the first switch tube and the second switch tube in the selection module 601 are triode devices respectively. Figure 6 As shown in (c), the first switch tube and the second switch tube in the selection module 601 are field effect tube devices respectively. Figure 6 The structure shown is exemplary, and in actual applications, a plurality of diode devices, triode devices, and field effect tube devices can also be used to form a switch unit to realize switch control. The present application does not limit the specific device quantity and circuit structure of the switch unit.

[0057] Optionally, the target voltage can be the second voltage output by the boost module; or the target voltage is determined according to the minimum working voltage of the power gauge. For example, the target voltage is the second voltage, and the power gauge works based on the second voltage when the first voltage provided by the battery is less than the second voltage; and the power gauge works based on the first voltage when the first voltage provided by the battery is greater than or equal to the second voltage. Correspondingly, for the selection module, the selection module can turn on the first path between the boost module and the power gauge to make the second voltage output by the boost module supply power to the power gauge when the first voltage provided by the battery is less than the second voltage; and turn on the second path between the battery and the power gauge to make the first voltage output by the battery supply power to the power gauge when the first voltage provided by the battery is greater than or equal to the second voltage.

[0058] Taking the first switch unit and the second switch unit as examples, the first switch unit and the second switch unit are diode devices, and the first switch unit and the second switch unit are applied to the circuit structure shown in the above Figure 4 The structure of the entire power supply circuit can be as follows: please refer to Figure 7 which shows a structure diagram of a power supply circuit of another power meter involved in an example embodiment of the present application. Figure 4 As shown in the figure, the power supply circuit 700 includes a battery 701, a power meter 702, a selection module 703 and a boost module 704. Figure 7 As shown in the figure, the selection module 703 further includes a first switch unit 703a and a second switch unit 703b, both of which are diode devices and are arranged on respective paths. Figure 7

[0059] In the process of normal operation of the power supply circuit 700, the battery 701 provides a first voltage to the boost module 704, the boost module 704 boosts the first voltage provided by the battery 701 to obtain a second voltage and provides the second voltage to the selection module 703, and the battery 701 also provides the first voltage to the selection module 703. In the selection module 703, the first switch unit 703a controls the conduction and interruption of the first path between the boost module 704 and the power meter 702, and the second switch unit 703b controls the conduction and interruption of the second path between the battery 701 and the power meter 702.

[0060] In the above Figure 7 circuit, the target voltage is equivalent to the second voltage transmitted to the selection module 703 in real time, and the selection module 703 can realize the conduction of different paths based on the size relationship between the first voltage and the second voltage. In the selection module 703, if the first voltage is less than the second voltage, the voltage at node one is greater than the voltage at node two, at this time, the first switch unit 703a is in a conduction state, and the first path between the boost module 704 and the power meter 702 is conducted, and the second switch unit 703b is in an interruption state, and the second path between the battery 701 and the power meter 702 is interrupted. If the first voltage is greater than or equal to the second voltage, the voltage at node one is greater than or equal to the voltage at node two, at this time, the second switch unit 703b is in a conduction state, and the second path between the battery 701 and the power meter 702 is conducted, and the first switch unit 703a is in an interruption state, and the first path between the boost module 704 and the power meter 702 is interrupted.

[0061] In the above Figure 7 ​In the shown scheme, the gating function of the selection module is determined based on the voltage level. If the second voltage is higher than the first voltage, the first path between the boost module 704 and the power gauge 702 is turned on. If the first voltage is higher than the second voltage, the second path between the battery 701 and the power gauge 702 is turned on.

[0062] It should be noted that in actual application, as long as the battery and the power gauge are normally connected with the boost module, the second voltage provided by the boost module will always be greater than or equal to the first voltage. The above-mentioned case where the first voltage is greater than the second voltage can occur as follows. For example, the boost module is removed, leaving only the battery and the power gauge (for example, in an electronic device, the battery is a battery containing a built-in power gauge, and the circuit board of the electronic device can contain the above-mentioned boost module. When the user or the developer removes the battery from the electronic device, the boost module is disconnected. The power gauge in the battery can still work based on the first voltage provided by the battery, thereby avoiding data loss of the power gauge in this case.

[0063] In one possible implementation, the target voltage can also be set by the developer or the user according to the minimum working voltage of the power gauge. For example, the target voltage is the minimum working voltage of the power gauge, or the target voltage is a small voltage value (such as 0.5 mV) added to the minimum working voltage of the power gauge. When determining the size relationship between the first voltage and the target voltage, the working based on the second voltage can be realized in the case where the first voltage provided by the battery is less than the target voltage; and the working based on the first voltage can be realized in the case where the first voltage provided by the battery is greater than or equal to the target voltage.

[0064] Optionally, in addition to the natural selection according to the size relationship between the first voltage and the second voltage, a control module can also be added in the power supply circuit. The control module compares the size relationship between the first voltage and the target voltage and outputs the required control signal according to the comparison result. For example, the power supply circuit further includes a control module, the control module is connected with the selection module; the control module is further configured to send a first control signal to the selection module in the case where the first voltage provided by the battery is less than the target voltage, so that the selection module turns on the first path between the boost module and the power gauge; the control module is further configured to send a first control signal to the selection module in the case where the first voltage provided by the battery is greater than or equal to the target voltage, so that the selection module turns on the first path between the boost module and the power gauge; or send a second control signal to the selection module, so that the selection module turns on the second path between the battery and the power gauge.

[0065] Please refer to Figure 8 which shows a structure schematic diagram of another power supply circuit of a power gauge according to an example embodiment of the present application. Figure 4 of the present application. As shown in FIG. 4, the power supply circuit of the power gauge includes a battery 701, a boost module 704, a power gauge 702, a selection module 703 and a control module 705.Figure 8 As shown, the power supply circuit 800 includes a battery 801, a fuel gauge 802, a selection module 803, a control module 804, and a boost module 805. Figure 8 As shown, battery 801 can provide a first voltage to selection module 803, control module 804, and boost module 805. Boost module 805 can also provide a second voltage obtained by boosting the first voltage to selection module 803. For control module 804, after obtaining the first voltage provided by battery 801, it can detect the relationship between the first voltage and the target voltage. If the first voltage provided by battery 801 is less than the target voltage, it sends a first control signal to selection module 803 to enable selection module 803 to conduct the first path between boost module 805 and fuel gauge 802. If the first voltage provided by battery 801 is greater than or equal to the target voltage, it sends either a first control signal or a second control signal to selection module 803 to enable selection module 803 to conduct the first path between boost module 805 and fuel gauge 802, or to conduct the second path between battery 801 and fuel gauge 802.

[0066] Optionally, the structure of the selection module 803 can be referenced as described above. Figure 6 In the various methods shown, in this embodiment, the control of each switching unit is determined by the control signal sent by the control module 804. That is to say, in the above... Figure 8 If the control module 804 sends a first control signal to the selection module 803, it controls the first switch unit to close and the second switch unit to open, thus connecting the first path between the boost module 805 and the fuel gauge 802, and disconnecting the second path between the battery 801 and the fuel gauge 802. If the control module 804 sends a second control signal to the selection module 803, it controls the second switch unit to close and the first switch unit to open, thus disconnecting the first path between the boost module 805 and the fuel gauge 802, and opening the second path between the battery 801 and the fuel gauge 802.

[0067] In this embodiment, when the target voltage is the minimum operating voltage of the fuel gauge, the above-mentioned... Figure 8The illustrated scheme allows the fuel gauge 802 to operate when the first voltage is greater than or equal to the target voltage. This means either the first or second voltage is sufficient to power the fuel gauge. The power supply circuit can then choose to activate either the first or second path, providing either the first or second voltage to the fuel gauge. Conversely, if the first voltage is less than the target voltage, it indicates that the first voltage is insufficient to power the fuel gauge 802. In this case, the first path powered by the battery must be interrupted, and the second path, where the boost module 805 is located, will power the fuel gauge. This ensures that the fuel gauge can still operate even when the battery voltage is below its minimum operating voltage.

[0068] In one possible implementation, the aforementioned boost module is mounted on a first circuit board, and the fuel gauge includes a power supply pin and a voltage detection pin. The first circuit board includes an input pin and a first output pin. The input pin is connected to the input terminals of the battery and the boost module, respectively, and the first output pin is connected to the output terminal of the boost module and the power supply pin of the fuel gauge, respectively. The voltage detection pin is connected to a third path, which is a path between the battery and the input pin. The fuel gauge is used to detect the first voltage provided by the battery through the voltage detection pin. When the fuel gauge operates based on a second voltage, the voltage connected to the power supply pin is greater than the voltage connected to the voltage detection pin.

[0069] Please refer to Figure 9 It illustrates an exemplary embodiment of this application relating to Figure 4 A schematic diagram of the power supply circuit for another type of fuel gauge. (See attached diagram.) Figure 9 As shown, the circuit includes a power supply circuit 900 comprising a battery 901, a fuel gauge 902, a first diode 903, a second diode 904, a first circuit board 905, a boost module 906, an input pin 905a of the first circuit board 905, and a first output pin 905b of the first circuit board 905. The positive terminal of the battery 901 is connected to the input pin 905a of the first circuit board 905, thereby providing a first voltage to the boost module 906. The output of the boost module 906 is also connected to the power supply pin 902a of the fuel gauge 902 via the first output pin 905b of the first circuit board 905. The first diode 903 is positioned between the first output pin 905b and the power supply pin 902a of the fuel gauge 902. The third path is the path between battery 901 and input pin 905a. A first node p1 and a second node p2 are led out from this third path. The first node p1 is connected to the power supply pin 902a of the fuel gauge 902 via diode 904, and the second node p2 is connected to the voltage detection pin 902b of the fuel gauge 902. The principle of the power supply circuit supplying power to the fuel gauge 902 can be referred to the description in the above embodiments, and will not be repeated here.

[0070] In the process of normal operation of the power supply circuit, the power gauge 902 can detect the first voltage provided by the battery 901 through the voltage detection pin 902b, and the power gauge 902 can be powered and work through the voltage accessed through the power supply pin. In the embodiment, the voltage accessed through the power supply pin is as follows: the second voltage is introduced in the case where the first voltage is less than the second voltage, and the first voltage is introduced in the case where the first voltage is greater than or equal to the second voltage.

[0071] Please refer to Figure 10 which shows a schematic diagram of the internal circuit structure of a power gauge according to an example embodiment of the present application. As Figure 10 shown, the power gauge 1000 includes a power supply pin 1001, a voltage detection pin 1002, and a leakage path 1003. The connection relationship of other devices is as shown in Figure 10 shown, when the voltage accessed through the voltage detection pin 1002 is higher than the voltage accessed through the power supply pin 1001, the leakage path 1003 exists when the power gauge 1000 works, causing a certain amount of power loss.

[0072] In the present solution, as can be known from the above, in the case where the power gauge works based on the second voltage, the voltage detection pin 902b of the power gauge 902 accesses the first voltage, and the second voltage is obtained through the voltage boosting processing of the voltage boosting module, so the second voltage is necessarily greater than the first voltage, that is, the voltage accessed through the power supply pin is greater than the voltage accessed through the voltage detection pin, avoiding the case where the voltage accessed through the voltage detection pin is higher than the voltage accessed through the power supply pin, and reducing the internal loss of the power gauge.

[0073] Optionally, the voltage boosting module in each of the above embodiments can be any one of a common voltage boosting Boost circuit module, a Boost-bypass circuit module, a charger pump (CP) having a voltage boosting function, a direct current-direct current (DC-DC) circuit module having a voltage boosting function, etc. The voltage boosting module can only provide the function of stable output voltage greater than or equal to the input voltage (that is, the converted second voltage is greater than or equal to the first voltage).

[0074] In summary, the power supply circuit of the power gauge provided in the present application includes a battery, a power gauge, and a voltage boosting module. The battery provides a first voltage, the voltage boosting module is connected with the battery and the power gauge respectively, and the voltage boosting module is used for boosting the first voltage to obtain a second voltage and providing the second voltage to the power gauge for power supply. The first voltage is boosted by the external voltage boosting module and provided to the power gauge for power supply, which ensures that the power gauge continues to work in the case of lower battery voltage, reduces the case of data loss of the power gauge, and improves the stability of the power gauge.

[0075] Furthermore, in scenarios where the fuel gauge is powered by a boost module, the voltage connected to the power supply pin can be ensured to be greater than the voltage connected to the voltage detection pin, preventing situations where the voltage connected to the voltage detection pin is higher than the voltage connected to the power supply pin and reducing internal losses in the fuel gauge. Moreover, by employing a selection module to choose the voltage supplied to the fuel gauge, it is possible for the other power supply to continue supplying power to the fuel gauge in the event of a power failure on one supply, ensuring stable and reliable operation of the fuel gauge under low voltage conditions.

[0076] In one possible implementation, for the above Figure 2 The power supply circuit shown can also be implemented according to the following circuit structure. The aforementioned boost module is mounted on the first circuit board. The fuel gauge includes a power supply pin and a voltage detection pin. The first circuit board includes an input pin, a first output pin, and a second output pin. The input pin is connected to the input terminals of the battery and the boost module, respectively. The first output pin is connected to the output terminal of the boost module and the power supply pin of the fuel gauge, respectively. A voltage divider resistor is also provided on the first circuit board, which is connected in series between the input pin and the second output pin. The second output pin is also connected to the voltage detection pin of the fuel gauge. The fuel gauge is used to detect the first voltage provided by the battery through the voltage detection pin. When the fuel gauge operates based on the second voltage, the voltage connected to the power supply pin is greater than the voltage connected to the voltage detection pin.

[0077] Please refer to Figure 11 It illustrates an exemplary embodiment of this application relating to Figure 2 A schematic diagram of the power supply circuit for another type of fuel gauge. (See diagram below.) Figure 11 As shown, the circuit includes a power supply circuit 1100 comprising a battery 1101, a fuel gauge 1102, a first circuit board 1103, a boost module 1104, an input pin 1103a of the first circuit board 1103, a first output pin 1103b of the first circuit board 1103, and a second output pin 1103c of the first circuit board 1103. The positive terminal of the battery 1101 is connected to the input pin 1105a of the first circuit board 1103, thereby providing a first voltage to the boost module 1104. The output of the boost module 1104 is also connected to the power supply pin 1102a of the fuel gauge 1102 via the first output pin 1103b of the first circuit board 1103. A voltage divider resistor 1106 is also provided on the first circuit board 1103, and the voltage divider resistor 1106 is connected to the second output pin 1103c of the first circuit board 1103. The second output pin 1103c of the first circuit board 1103 is then connected to the voltage detection pin 1102b of the fuel gauge 1102.

[0078] In the process of normal operation of the power supply circuit, the battery 1101 can provide a first voltage, and the battery 1101 can be powered and work by the voltage accessed through the power supply pin 1102b. In this embodiment, since the voltage accessed through the power supply pin is the second voltage, and the voltage accessed through the voltage detection pin 1102b is the voltage output by the voltage dividing resistor, which is lower than the first voltage and lower than the second voltage, it is ensured that the voltage accessed through the power supply pin is higher than the voltage accessed through the voltage detection pin, thereby avoiding the case that the voltage accessed through the voltage detection pin is higher than the voltage accessed through the power supply pin, and reducing the internal loss of the battery.

[0079] It should be noted that in this application, the above Figure 2 to Figure 11 The battery and the battery gauge involved in each embodiment can be of an integrated design, that is, the battery and the battery gauge are the same module or unit, for example, the battery gauge is a built-in battery gauge of the battery, and the boost module is a unit outside the battery. In actual products, the battery with the built-in battery gauge can include a first pin and a second pin, the battery provides a first voltage to the boost module through the first pin, and receives a second voltage provided by the boost module through the second pin to supply power to the battery gauge.

[0080] For reference Figure 12 , which shows a structure diagram of a power supply circuit of a battery according to an example embodiment of the present application. As Figure 12 shown, the battery 1201 internally includes a battery core and a battery gauge, the battery provides a first voltage to an external boost module 1204 through a first pin 1202, and receives a second voltage provided by the boost module 1204 through a second pin 1203 to supply power to the internal battery gauge. The specific power supply principle can be referred to the above Figure 2 to Figure 11 description of each embodiment, which will not be repeated here.

[0081] It should be noted that the above Figure 2 to Figure 12 each embodiment shown can be combined with each other to realize various power supply examples of the battery gauge, which will not be repeated here.

[0082] In summary, the power supply circuit of the battery gauge provided in the present application includes a battery, a battery gauge, and a boost module. The battery provides a first voltage, the boost module is connected with the battery and the battery gauge respectively, and the boost module is used to boost the first voltage to obtain a second voltage and provide the second voltage to the battery gauge to supply power to the battery gauge. The first voltage is boosted by the external boost module and provided to the battery gauge to supply power, which ensures that the battery gauge continues to work under a lower battery voltage, reduces the data loss of the battery gauge, and improves the stability of the battery gauge.

[0083] Optionally, the application further provides a battery, which comprises a battery cell and a battery gauge, and the battery comprises a first pin and a second pin; the battery is configured to provide a first voltage to the voltage boosting module through the first pin; the battery is further configured to provide the first voltage to the battery gauge through the first pin; or, the battery is configured to receive a second voltage obtained by boosting the first voltage by the voltage boosting module through the second pin, and provide power to the battery gauge. The structure of the battery can refer to the structure in the above Figure 12 , which will not be repeated here.

[0084] Optionally, the application further provides an electronic device, which comprises at least one power supply circuit of the battery gauge according to the above embodiments, or comprises the battery provided above.

[0085] Please refer to Figure 13 , which shows a structural schematic diagram of an electronic device according to an example embodiment of the application. As shown in Figure 13 , the electronic device comprises a processor 1310, a memory 1320, a transceiver 1330, a display unit 1340, an input unit 1350, a sensor 1360, and a power module 1370, etc.

[0086] The processor 1310 is the control center of the electronic device, which connects all parts of the electronic device through various interfaces and lines, executes various functions of the electronic device and processes data by running or executing software programs and / or modules stored in the memory 1320, and calling data stored in the memory 1320, thereby monitoring the whole electronic device. Optionally, the processor 1310 can comprise one or more processing units; optionally, the processor 1310 can integrate an application processor, which mainly processes operation devices, user interfaces, and application programs, etc., and can further comprise other processors, which will not be listed here.

[0087] The memory 1320 can be used to store software programs and modules, and the processor 1310 executes various functions of the electronic device and processes data by running the software programs and modules stored in the memory 1320. The memory 1320 can mainly comprise a program storage area and a data storage area, wherein the program storage area can store application programs required by operation devices and at least one function (such as sound playing function, image playing function, etc.), etc.; the data storage area can store data created according to the use of the electronic device (such as audio data, phonebook, etc.), etc. In addition, the memory 1320 can comprise a high-speed random access memory, and can further comprise a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state memory device.

[0088] The transceiver 1330 can provide a solution for wireless communication applied to the electronic device, including a wireless local area network (WLAN) (e.g., a wireless fidelity (Wi-Fi) network), Bluetooth (BT), a global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (IR), etc. The transceiver 1330 can be one or more devices that integrate at least one communication processing module, such as an antenna and a baseband processor integrated transceiver 1330, or an antenna and a modem processor integrated transceiver 1330, etc., without limitation.

[0089] The display unit 1340 can be used to display information input by a user or information provided to a user, as well as various menus of the electronic device. The display unit 1340 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc., without limitation.

[0090] The input unit 1350 can be used to receive input digital or character information, and to generate key signal input related to user settings and function control of the electronic device. Specifically, the input unit 1350 can collect operations on or near it by a user and drive the corresponding connection device according to a pre-set program. In addition, the input unit 1350 can include a touch panel, which can be implemented in various types such as a resistive type, a capacitive type, an infrared type, and a surface acoustic wave type. In addition to the touch panel, the input unit 1350 can include other input devices. Specifically, the other input devices can include one or more of a function key (such as a volume control button, a switch button, etc.), a trackball, a jog wheel, etc.

[0091] The electronic device can further include at least one sensor 1360, such as a gyroscope sensor, a motion sensor, and other sensors. The motion sensor can include an acceleration sensor for detecting the magnitude of acceleration in each direction, and detecting the magnitude and direction of gravity when at rest, which can be used for applications that identify the posture of the electronic device, such as horizontal and vertical screen switching, related games, magnetometer posture calibration, etc. The electronic device can also be configured with a manometer, a barometer, a hygrometer, a thermometer, an infrared sensor, and other sensors, which will not be described here.

[0092] The electronic device also includes a power module 1370 that supplies power to various components. Optionally, the power module 1370 can be logically connected to the processor 1310 via a power management device, thereby enabling functions such as charging, discharging, and power consumption management through the power management device. In this solution, the power module 1370 can be a battery with a built-in fuel gauge, which, together with a boost module on the motherboard of the electronic device, constitutes the power supply circuit in the above embodiments.

[0093] Although not shown, the electronic device may also include a camera. Optionally, the camera may be positioned in the front or rear of the electronic device, and this application embodiment does not limit this.

[0094] It is understood that the structures illustrated in the embodiments of this application do not constitute a specific limitation on the electronic device. In other embodiments of this application, the electronic device may include more or fewer components than illustrated, or combine some components, or split some components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0095] Optionally, the aforementioned electronic devices may include, but are not limited to, wearable devices (such as smart bracelets, smartwatches, smart glasses, etc.), mobile phones, tablets, laptops, desktop computers, and laptop computers. Typically, the aforementioned... Figure 13 The electronic devices shown need to be equipped with a corresponding operating system and run on that operating system. For example, the operating system of the electronic devices can be Android, iOS, Linux, etc.

[0096] Taking a mobile phone as an example, please refer to... Figure 14 This illustration shows a schematic diagram of the power supply circuit for using the aforementioned fuel gauge in a mobile phone, according to an exemplary embodiment of this application. Figure 14 As shown, the mobile phone 1400 includes a power module 1401, a motherboard 1402, and a boost module 1403 mounted on the motherboard 1402. The boost module 1403 can be integrated as a Boost IC chip or a Boost-Bypass IC chip. Figure 14 (Taking a Boost IC chip as an example), its power module 1401 can provide a first voltage to the boost module 1403 through the first pin 1401a. After the boost module 1403 boosts the first voltage to obtain a second voltage, the power module 1401 can also receive the second voltage through the second pin 1401b, thereby powering the built-in fuel gauge. The circuit structure and connection method of the power module 1401 and the boost module 1403 can be referred to the above embodiments, and the working principle can be referred to the above. Figure 2 to Figure 11 The description in the text will not be repeated here.

[0097] It should be noted that, in Figure 14 , the selection module composed of two diodes can be designed in the internal of the power module 1401 (as shown in Figure 14 ), of course, it can also be designed on other circuit boards of the mobile phone or the main board of the mobile phone, which is not limited here.

[0098] In summary, the power supply scheme of the power gauge provided by the present application is simple, which can solve the problem that the lithium ion battery (i.e. the power module) used in the electronic device, especially the silicon negative electrode battery, continues to work stably at an extremely low working voltage, and the power gauge will not lose power due to the too low voltage of the power module, thereby avoiding the loss of data, flash erasing failure and the like. Moreover, when the power module in the mobile phone is removed (such as in the production, maintenance and the like), the power gauge will not lose power, and the internal data information will not be lost.

[0099] Please refer to Figure 15 , which shows a method flow diagram of a power supply method of a power gauge provided by an exemplary embodiment of the present application. The power supply method can be applied to the above-mentioned power supply circuit, and the structure of the power supply circuit can refer to the description in the above-mentioned embodiments. As shown in Figure 15 , the method comprises the following steps:

[0100] Step 1501, obtaining a first voltage provided by a battery.

[0101] The first voltage provided by the battery is the battery voltage.

[0102] Step 1502, in the case that the first voltage provided by the battery is less than a target voltage, supplying power to the power gauge by a second voltage output by a boost module, the boost module being connected with the battery and the power gauge respectively, the boost module being used for boosting the first voltage to obtain the second voltage.

[0103] Step 1503, in the case that the first voltage provided by the battery is greater than or equal to the target voltage, supplying power to the power gauge by the first voltage output by the battery.

[0104] Optionally, the specific implementation logic of each step can refer to the embodiments corresponding to each power supply circuit shown in the above-mentioned Figure 2 to Figure 11 , which will not be described here.

[0105] It should be noted that the circuit provided in the above examples is only used for example to divide the above-mentioned functional modules when performing control. In actual application, the above-mentioned functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above examples belong to the same concept, and the specific implementation process is described in the method embodiments, which will not be described here.

[0106] The serial numbers of the embodiments of the present application are only for description, not representing the advantages and disadvantages of the embodiments.

[0107] Those skilled in the art can understand that all or part of the steps of the above-mentioned embodiments can be completed by hardware, or by program to instruct related hardware to complete, and the program can be stored in a computer readable storage medium. The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0108] The above is only an optional embodiment of the present application, and does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A power supply circuit for a power meter, characterized by The power supply circuit comprises: a battery for providing a first voltage; a battery gauge; a voltage boosting module connected with the battery and the battery gauge respectively, the voltage boosting module being configured to boost the first voltage to obtain a second voltage and provide the second voltage to the battery gauge to supply power for the battery gauge.

2. The power supply circuit of claim 1, wherein, The battery gauge is further connected with the battery; The battery gauge is further configured to work based on the second voltage when the first voltage provided by the battery is less than a target voltage, or work based on the first voltage when the first voltage provided by the battery is greater than or equal to the target voltage.

3. The power supply circuit of claim 2, wherein, The power supply circuit further comprises a selection module, and the battery gauge is connected with the battery through the selection module, and the selection module is further connected with the voltage boosting module; The selection module is configured to turn on a first path between the voltage boosting module and the battery gauge to make the second voltage output by the voltage boosting module supply power for the battery gauge when the first voltage provided by the battery is less than the target voltage. The selection module is further configured to turn on a second path between the battery and the battery gauge to make the first voltage output by the battery supply power for the battery gauge when the first voltage provided by the battery is greater than or equal to the target voltage.

4. The power supply circuit according to claim 3, characterized in that, The selection module comprises a first switching unit and a second switching unit, the first switching unit is arranged on the first path, and the second switching unit is arranged on the second path; The first switching unit is configured to turn on the first path and the second switching unit is configured to turn off the second path when the first voltage provided by the battery is less than the target voltage. The first switching unit is configured to turn off the first path and the second switching unit is configured to turn on the second path when the first voltage provided by the battery is greater than or equal to the target voltage.

5. The power supply circuit of claim 4, wherein, The first switching unit comprises any one of a diode device, a triode device and a field effect tube device; The second switching unit comprises any one of a diode device, a triode device and a field effect tube device.

6. The power supply circuit of claim 3, wherein, The power supply circuit further comprises a control module, and the control module is connected with the selection module; The control module is further configured to send a first control signal to the selection module to make the selection module turn on the first path between the voltage boosting module and the battery gauge when the first voltage provided by the battery is less than the target voltage. The control module is further configured to send a first control signal to the selection module to make the selection module turn on the first path between the voltage boosting module and the battery gauge when the first voltage provided by the battery is greater than or equal to the target voltage. Or, send a second control signal to the selection module to make the selection module turn on the second path between the battery and the battery gauge.

7. The power supply circuit of claim 2, wherein, The target voltage is the second voltage output by the voltage boosting module; or The target voltage is determined according to the minimum working voltage of the battery gauge.

8. The power supply circuit of claim 1, wherein, The voltage boosting module is arranged on the first circuit board, the power meter comprises a power supply pin and a voltage detection pin; the first circuit board comprises an input pin and a first output pin, the input pin is connected with the input end of the battery and the voltage boosting module respectively, and the first output pin is connected with the output end of the voltage boosting module and the power supply pin of the power meter respectively; The voltage detection pin is connected with a third path, and the third path is a path between the battery and the input pin; The power meter is used for detecting the first voltage provided by the battery through the voltage detection pin; In the case that the power meter works based on the second voltage, the voltage inputted by the power supply pin is greater than the voltage inputted by the voltage detection pin.

9. The power supply circuit of claim 1, wherein, The voltage boosting module is arranged on the first circuit board, the power meter comprises a power supply pin and a voltage detection pin, and the first circuit board comprises an input pin, a first output pin and a second output pin; the input pin is connected with the input end of the battery and the voltage boosting module respectively, and the first output pin is connected with the output end of the voltage boosting module and the power supply pin of the power meter respectively; A voltage dividing resistor is further arranged on the first circuit board, the voltage dividing resistor is connected in series between the input pin and the second output pin, and the second output pin is further connected with the voltage detection pin of the power meter; The power meter is used for detecting the first voltage provided by the battery through the voltage detection pin; In the case that the power meter works based on the second voltage, the voltage inputted by the power supply pin is greater than the voltage inputted by the voltage detection pin.

10. A power supply circuit according to any one of claims 1 to 9, characterized in that The power meter and the battery are designed in an integrated manner; The battery further comprises a first pin and a second pin; The battery is further used for providing the first voltage to the voltage boosting module through the first pin; The battery is further used for receiving the second voltage provided by the voltage boosting module through the second pin, and supplying power to the power meter.

11. A battery, characterized by The battery comprises a battery core and a power meter, and the battery comprises a first pin and a second pin; The battery is used for providing the first voltage to the voltage boosting module through the first pin; The battery is further used for providing the first voltage to the power meter through the first pin, or receiving the second voltage obtained by the voltage boosting module through the second pin, and supplying power to the power meter.

12. An electronic device, comprising: The electronic device comprises a power supply circuit of the power meter as claimed in any one of claims 1 to 12, or comprises at least one battery as claimed in claim 13.

13. A power supply method for a power meter, characterized by, The method comprises: acquiring the first voltage provided by the battery; in the case that the first voltage provided by the battery is less than a target voltage, supplying power to the power meter by the second voltage outputted by the voltage boosting module, the voltage boosting module is connected with the battery and the power meter respectively, and the voltage boosting module is used for boosting the first voltage to obtain the second voltage; in the case that the first voltage provided by the battery is greater than or equal to the target voltage, supplying power to the power meter by the first voltage outputted by the battery.

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