Electronic equipment, radio frequency signal power rollback method and storage medium

Abstract

The invention provides an electronic device, a radio frequency signal power rollback method and a storage medium. The electronic equipment comprises a battery, a temperature sensor, a power management system and an antenna. The temperature sensor detects the current temperature value of the electronic equipment; the power management system obtains a current voltage value of the battery and a current temperature interval to which a current temperature value of the electronic equipment belongs; the antenna comprises a radio frequency front-end circuit and a radiator, the radio frequency front-end circuit is electrically connected to the battery, the power management system and the radiator, and when the current voltage value is larger than the target voltage, the maximum power of the radio frequency front-end circuit in the working frequency band is the first power. When the current voltage value is smaller than or equal to the target voltage, the power management system determines a power back-off value corresponding to the working frequency band according to the current voltage value and the current temperature interval, and limits the maximum output power of the radio frequency front-end circuit in the working frequency band according to the power back-off value to enable the maximum power of the radio frequency front-end circuit to be second power, the second power is less than the first power.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an electronic device, a power back-off method for radio frequency signals, and a storage medium. Background Art

[0002] With the development of electronic devices, mobile phones and other electronic devices with batteries have been more and more widely used. However, in the related art, electronic devices are prone to be turned off under certain circumstances, thereby failing to give full play to the advantages of high energy density of batteries of electronic devices. Summary of the invention

[0003] In a first aspect, the present application provides an electronic device, the electronic device comprising:

[0004] Battery;

[0005] A temperature sensor, wherein the temperature sensor is used to detect a current temperature value of the electronic device;

[0006] a power management system, the power management system being electrically connected to the battery and configured to obtain a current voltage value of the battery, the power management system being also electrically connected to the temperature sensor and configured to obtain a current temperature value of the electronic device and determine a current temperature interval to which the current temperature value belongs; and

[0007] An antenna, the antenna comprising a radio frequency front-end circuit and a radiator, the radio frequency front-end circuit being electrically connected to the power management system, the radio frequency front-end circuit being also electrically connected to the radiator, wherein the battery is used to be electrically connected to the radio frequency front-end circuit;

[0008] Wherein, when the current voltage value is greater than the target voltage, the maximum power of the RF front-end circuit in the working frequency band is the first power, and the power management system is used for when the current voltage value is less than or equal to the target voltage:

[0009] Determine a power backoff level for power backoff of the RF front-end circuit according to the current voltage value and the current temperature range, determine a power backoff value corresponding to the working frequency band according to the working frequency band of the antenna and the power backoff level, and limit the maximum output power of the RF front-end circuit in the working frequency band according to the power backoff value so that the maximum power of the RF front-end circuit is a second power, wherein the second power is less than the first power.

[0010] In a second aspect, the present application provides a power backoff method for a radio frequency signal, which is applied to an electronic device, wherein the electronic device includes a battery and an antenna, and the antenna includes a radio frequency front-end circuit. The power backoff method includes:

[0011] Acquire a current voltage value of the battery, and when the current voltage is greater than a target voltage, the maximum power of the RF front-end circuit in the working frequency band is a first power;

[0012] Obtaining a current temperature value of the electronic device and determining a current temperature range to which the current temperature value belongs;

[0013] When the current voltage value is less than or equal to the target voltage, determining a power backoff level for performing power backoff on the RF front-end circuit according to the current voltage value and the current temperature range;

[0014] Determine the power backoff value corresponding to the working frequency band according to the working frequency band and the power backoff level of the antenna; and

[0015] The maximum output power of the RF front-end circuit in the working frequency band is limited according to the power back-off value so that the maximum power of the RF front-end circuit is a second power, wherein the second power is less than the first power.

[0016] In a third aspect, the present application provides a storage medium storing a computer program, wherein the computer program is used to implement the method described in the second aspect when executed.

[0017] In summary, in an electronic device provided by an embodiment of the present application, when the current voltage value is greater than the target voltage, the maximum power of the RF front-end circuit in the working frequency band is the first power. When the current voltage is less than or equal to the target voltage, the power management system can use the current voltage value and the current temperature range to determine the level of power backoff for the RF front-end circuit, and determine the power backoff value corresponding to the working frequency band according to the working frequency band of the antenna and the power backoff level, and limit the maximum output power of the RF front-end circuit in the working frequency band according to the power backoff value, so that the maximum power of the RF front-end circuit is the second power. Wherein, the second power is less than the first power. It can be seen that, compared with the current voltage of the battery being greater than the target voltage, the electronic device provided by the embodiment of the present application can be when the current voltage of the battery is less than or equal to the target voltage, the maximum power of the RF front-end circuit is the second power, and the second power is less than the first power. Even if the load in the electronic device becomes smaller, and / or the ambient temperature of the electronic device is low, the battery can continue to work, and the shutdown process will not be triggered. The battery continues to release energy, which can give play to the energy advantage of the battery. In addition, when the current voltage is less than or equal to the target voltage, the power management system limits the maximum output power of the RF front-end circuit in the working frequency band according to the power back-off value, thereby extending the battery life of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments are briefly introduced below.

[0019] Figure 1 A schematic diagram of a battery of an electronic device in the related art supplying power to a load;

[0020] Figure 2 A three-dimensional schematic diagram of an electronic device provided in one embodiment of the present application;

[0021] Figure 3 For one embodiment Figure 2 Circuit block diagram of electronic equipment in;

[0022] Figure 4 A correspondence table of battery voltage, temperature range and corresponding power fallback level provided in one embodiment;

[0023] Figure 5 A correspondence table of the working frequency band, power backoff level and power backoff value of the antenna provided in one implementation manner;

[0024] Figure 6 For another embodiment Figure 2 Circuit block diagram of electronic equipment in;

[0025] Figure 7 A schematic diagram of a portion of a circuit when an electronic device according to an embodiment of the present application includes dual batteries;

[0026] Figure 8 A correspondence table of battery voltage, temperature range and corresponding power fallback level provided in another embodiment;

[0027] Fig. 9 For yet another embodiment Figure 2 Circuit block diagram of electronic equipment in;

[0028] Fig.10 For yet another embodiment Figure 2 Circuit block diagram of electronic equipment in;

[0029] Fig.11 For yet another embodiment Figure 2 Circuit block diagram of electronic equipment in;

[0030] Fig.12 For another embodiment Figure 2 Circuit block diagram of electronic equipment in;

[0031] Fig.13 A flowchart of a method for power back-off of a radio frequency signal provided in one embodiment of the present application;

[0032] Fig.14for Fig.13 A schematic diagram of S131 included in S130;

[0033] Fig.15 for Fig.13 A schematic diagram of S141 included in S140;

[0034] Fig.16 for Fig.13 Schematic diagram of S142 and S143 included in S140. DETAILED DESCRIPTION

[0035] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, not all of the embodiments. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present application.

[0036] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0037] The terms "first", "second", etc. in the specification and claims of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example: a component or device including one or more parts is not limited to the one or more parts listed, but may optionally include one or more parts that are not listed but inherent to the exemplified product, or one or more parts that it should have based on the described function.

[0038] Before introducing the electronic device provided in the embodiments of the present application, the electronic device provided in the related art is first introduced.

[0039] Batteries are usually used in electronic devices to power the loads of electronic devices. Lithium batteries have the advantages of high energy density, long cycle life, fast charging speed and light weight, and have been widely used. Lithium batteries include positive electrodes, electrolytes and negative electrodes. Among them, the negative electrode of lithium batteries is the key part of storing and releasing ions, which directly affects the energy density of lithium batteries. According to the different materials of the negative electrode of lithium batteries, lithium batteries include graphite batteries and silicon batteries. In other words, when the negative electrode material of the lithium battery is all graphite, the lithium battery is also called a graphite battery; when the negative electrode material of the lithium battery includes silicon, the lithium battery is also called a silicon battery. The negative electrode material of the lithium battery includes silicon, which can be but not limited to silicon doped in graphite at the negative electrode of the lithium battery, or the negative electrode of the lithium battery is silicon, or the lithium battery includes other materials doped with silicon. The specific capacity of graphite in the graphite battery in the related art is close to the theoretical limit of graphite material 372mAh / g. Therefore, under the traction goal of high energy density, the industry began to use silicon as the negative electrode material, and this battery is called a silicon battery. The theoretical specific capacity of silicon material is 4200mAh / g, which is far higher than that of graphite material, so the energy density of silicon batteries is much higher than that of graphite batteries.

[0040] When the battery is used in electronic devices, such as mobile phones, the phone system power supply voltage (Phone Voltage VPH) is 4V. For a single battery (also called a single-cell battery), the voltage of the graphite battery in the related art is 4.5V when fully charged, and the voltage when the voltage of the graphite battery is low to a certain extent and triggers the electronic device to shut down is generally 3.3V. For silicon batteries, silicon batteries have a capacity of about 6% in the range of 3.0V to 3.3V. The capacity of the silicon battery in the range of 3.0V to 3.3V needs to be released to reflect the energy density advantage of the silicon battery. Therefore, the electronic device in the related art sets the shutdown voltage to a threshold voltage, such as 3V. Generally speaking, when the battery of an electronic device is a silicon battery, the battery is less than 3V, and the battery is less than 3V for a preset time (such as 15 seconds), it is considered that the battery of the electronic device is insufficient and the electronic device is shut down.

[0041] However, in the related art, if the battery in the electronic device is only a silicon battery, in actual use, the actual voltage of the battery may be greater than or equal to the threshold voltage, and when the battery voltage is less than the threshold voltage (such as 3V) due to certain circumstances and lasts for a preset time, the electronic device is triggered to shut down, which results in the failure to take advantage of the high energy density of the silicon battery. The specific situation is described as follows.

[0042] See also Figure 1 , Figure 1It is a schematic diagram of a battery of an electronic device in the related art supplying power to a load. The electronic device 1 includes a battery 110 and a load 113. The battery 110 can be equivalent to a voltage source 111 and an internal resistor 112 connected in series. The battery 110 is used to supply power to the load 113. In other words, the voltage source 111, the internal resistor 112 and the load 113 are connected in series in sequence. In actual use, when the actual voltage of the battery 110 is greater than or equal to the threshold voltage, the voltage of the battery 110 is usually less than the threshold voltage (such as 3V) due to certain circumstances and the duration is a preset duration, which triggers the electronic device 1 to shut down, thereby failing to take advantage of the high energy density of silicon batteries.

[0043] In the first case, the resistance of the load 113 becomes smaller due to the instantaneous and continuous loading of the load 113 .

[0044] according to Figure 1 , the whole current I of the electronic device 1 is: I = VCC / (R0+R1)(1);

[0045] Wherein, VCC is the voltage of the voltage source 111 , R0 is the resistance value of the internal resistor 112 , and R1 is the resistance value of the load 113 .

[0046] The load voltage VPH at the load 113 of the electronic device 1 (also referred to as the system voltage of the electronic device 1 ) satisfies:

[0047] VPH=I*R1=VCC*R1 / (R0+R1)=VCC(1-R0 / (R0+R1)) (2).

[0048] The instantaneous and continuous loading of the load 113 causes the resistance of the load 113 to decrease. For example, the camera in the electronic device 1 is turned on, or music is played at a high volume, or the antenna 150 of the electronic device 1 transmits at a high power (for example, cellular high-power transmission under a weak network), etc., which will cause the voltage value of the load 113 to decrease, that is, cause the value of R1 to decrease. According to VPH = I*R1 = VCC*R1 / (R0+R1), it can be seen that the decrease in the value of R1 will cause the load voltage VPH to decrease.

[0049] In the second case, the ambient temperature of the electronic device 1 is low, and the ion transmission inside the battery 110 becomes slow, thereby causing the resistance value of the internal resistor 112 to become larger.

[0050] According to VPH=VCC(1-R0 / (R0+R1)), it can be found that the resistance value of the internal resistor 112 becomes larger, which will cause the load voltage VPH to decrease.

[0051] Currently, the automatic shutdown condition of the electronic device 1 is that the load voltage VPH is less than the threshold voltage (such as 3V) and lasts for a preset time (such as 15 seconds), then it is considered that the battery 110 of the electronic device 1 is insufficient and the electronic device 1 is shut down.

[0052] Combined with the above introduction, the superposition of the first and second situations will cause the load voltage VPH to decrease, which is more likely to trigger the electronic device 1 to shut down.

[0053] Understandably, Figure 1 The description of the electronic device 1 of the related technology in the embodiments of the corresponding specification is the technology before the improvement of the electronic device 1 provided in the implementation mode of the present application, and should not be understood as the prior art.

[0054] Please also read Figure 2 and Figure 3 , Figure 2 A three-dimensional schematic diagram of an electronic device provided in one embodiment of the present application; Figure 3 For one embodiment Figure 2 The electronic device 1 includes but is not limited to mobile phones, telephones, televisions, tablet computers (Pads), personal computers, laptop computers (PCs), vehicle-mounted devices, headphones, watches, wearable devices, and other devices that can send and receive electromagnetic wave signals. In the schematic diagram of the implementation mode of the present application, the electronic device 1 is illustrated as a mobile phone as an example. It can be understood that this should not be understood as a limitation on the electronic device 1 provided in the implementation mode of the present application.

[0055] The electronic device 1 includes a battery 110, a temperature sensor 120, a power management system 130 and an antenna 150. The temperature sensor 120 is used to detect the current temperature value of the electronic device 1. The power management system 130 is electrically connected to the battery 110 and is used to obtain the current voltage value of the battery 110. The power management system 130 is also electrically connected to the temperature sensor 120 and is used to obtain the current temperature value of the electronic device 1 and determine the current temperature range to which the current temperature value belongs. The antenna 150 includes a radio frequency front-end circuit 151 and a radiator 152. The radio frequency front-end circuit 151 is electrically connected to the power management system 130, and the radio frequency front-end circuit 151 is also electrically connected to the radiator 152. The battery 110 is used to be electrically connected to the radio frequency front-end circuit 151. When the current voltage value is greater than the target voltage, the maximum power of the radio frequency front-end circuit 151 in the working frequency band is the first power. The power management system 130 is used to determine the power backoff level for power backoff of the RF front-end circuit 151 according to the current voltage value and the current temperature range when the current voltage value is less than or equal to the target voltage, determine the power backoff value corresponding to the working frequency band according to the working frequency band of the antenna 150 and the power backoff level, and limit the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power backoff value so that the maximum power of the RF front-end circuit 151 is the second power. The second power is less than the first power.

[0056] In this embodiment, a lithium battery (also called a silicon battery) whose negative electrode material of the battery 110 includes silicon is used as an example for description. The negative electrode material of the battery 110 includes silicon. The battery 110 can be a single battery or a dual battery, which is not limited in this embodiment.

[0057] The power management system 130 is electrically connected to the battery 110 through an interface, and is used to obtain the current voltage value VBAT of the battery 110. The power information of the battery 110 corresponds to the voltage value of the battery 110. When the power of the battery 110 is large, the voltage value of the battery 110 is large; correspondingly, when the power of the battery 110 is small, the voltage value of the battery 110 is small. Specifically, when the power of the battery 110 is a first power, the voltage value of the battery 110 is a first target voltage; when the power of the battery 110 is a second power, the voltage value of the battery 110 is a second target voltage. The first power is greater than the second power, and the first target voltage is greater than the second target voltage. Therefore, the current voltage value of the battery 110 obtained by the power management system 130 can more accurately represent the power of the battery 110. For example, the current voltage value of the battery 110 can be, but is not limited to, 3.35V, 3.25V, 3.10V, 2.95V, or 2.80V. As described above, if the current voltage value of the battery 110 is less than the threshold voltage (eg, 3V) and lasts for a preset time (eg, 15 seconds), it is considered that the battery 110 of the electronic device 1 is low on power and the electronic device 1 shuts down.

[0058] When the current voltage value is greater than the target voltage, the maximum power of the RF front-end circuit 151 in the working frequency band is the first power. It should be noted that when the current voltage value is greater than the target voltage, even if the first and second situations described above exist, it is difficult to pull the electronic device 1 down to the threshold voltage (such as 3V) and the duration is a preset duration (such as 15 seconds). Among them, please refer to the previous description for the first and second situations, which will not be repeated here. For example, for a single battery, the target voltage can be but is not limited to 3.35V, or 3.30V, or 3.25V, or 3.20V, or 3.15V, etc.

[0059] In addition, it should be noted that when the current voltage is greater than the target voltage, the magnitude of the first power of the RF circuit in the working frequency band is related to the specific frequency band of the working frequency band, and the maximum powers of each specific frequency band may be the same or different. In other words, the first powers of each specific frequency band may be the same or different.

[0060] In addition, it should be noted that the maximum power of the RF circuit in the working frequency band is the first power, which cannot be understood as the RF circuit always working at the first power in the working frequency band. The maximum power of the RF circuit in the working frequency band is the first power, which means that the actual power of the RF signal when working in the working frequency band is less than or equal to the first power. In actual operation, the actual power of the RF circuit in the working frequency band is related to the signal strength of the communication between the electronic device 1 and the base station in the working frequency band. For example, when the signal strength when the electronic device 1 and the base station communicate in the working frequency band is the first strength, the actual power of the RF signal in the working frequency band is the first actual power; correspondingly, when the signal strength when the electronic device 1 and the base station communicate in the working frequency band is the second strength, the actual power of the RF signal in the working frequency band is the second actual power. Then, the first strength is greater than the second strength, and the first actual power is less than the second actual power. And the second actual power is less than or equal to the first power. The signal strength of the communication between the electronic device 1 and the base station in the working frequency band is related to the distance between the electronic device 1 and the base station, and may also be related to the posture of the electronic device 1 and other conditions.

[0061] The temperature sensor 120 is used to detect the current temperature value of the electronic device 1. The embodiment of the present application does not limit the type of the temperature sensor 120.

[0062] For example, the temperature interval can be divided according to the high and low temperatures. A temperature interval may include one or two temperature endpoint values. By determining the endpoint values, the temperature interval can be determined. For example, the temperature endpoint values ​​are -10°C, 0°C, 10°C, and 25°C. Therefore, the temperature S0 satisfies: S0<-10°C is a temperature interval (named as temperature interval a); S0 satisfies: -10°C≤S0<0°C is a temperature interval (named as temperature interval b); S0 satisfies: 0°C≤S0<10°C is a temperature interval (named as temperature interval c); S0 satisfies: 10°C≤S0<25°C is a temperature interval (named as temperature interval d); S0 satisfies: 25°C≤S0 is a temperature interval (named as temperature interval e).

[0063] The power management system 130 is electrically connected to the temperature sensor 120, collects information from the temperature sensor 120 to obtain the current temperature value, and determines the temperature interval described by the current temperature value. Specifically, when the current temperature value falls within the corresponding temperature interval, the temperature interval into which the current temperature value falls is the temperature interval to which the current temperature value belongs, that is, the current temperature interval. For example, if the current temperature value is -5°C, it falls into the temperature interval of -10°C≤S0<0°C (that is, temperature interval b). Therefore, when the current temperature value is -5°C, the current temperature interval to which it belongs is temperature interval b.

[0064] In one embodiment, when the battery 110 is at a current voltage value and the electronic device 1 is at a current temperature value, the maximum power of the antenna 150 in the working frequency band is a first power. The power management system 130 limits the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power back-off value. After limiting the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power back-off value, the maximum power of the antenna 150 in the working frequency band is a second power. The second power is less than the first power. The first power minus the power back-off value is equal to the second power.

[0065] It should be noted that when the current voltage is less than or equal to the target voltage, the magnitude of the second power of the RF circuit in the working frequency band is related to the specific frequency band of the working frequency band, and the second powers of each specific frequency band may be the same or different. The maximum output power of the RF front-end circuit 151 in the working frequency band is limited according to the power back-off value so that the maximum power of the RF front-end circuit 151 is the second power. It should be noted that the maximum power of the RF front-end circuit 151 is the second power, which cannot be understood as the RF circuit always working at the second power in the working frequency band. The maximum power of the RF front-end circuit 151 is the second power, which means that the actual power of the RF signal when working in the working frequency band is less than or equal to the second power.

[0066] In actual operation, the actual power of the radio frequency circuit in the working frequency band is related to the signal strength of the communication between the electronic device 1 and the base station in the working frequency band. For example, when the signal strength of the communication between the electronic device 1 and the base station in the working frequency band is the third strength, the actual power of the radio frequency signal in the working frequency band is the third actual power; correspondingly, when the signal strength of the communication between the electronic device 1 and the base station in the working frequency band is the fourth strength, the actual power of the radio frequency signal in the working frequency band is the fourth actual power. Then, the third strength is greater than the fourth strength, and the third actual power is less than the fourth actual power. And the fourth actual power is less than or equal to the second power. The signal strength of the communication between the electronic device 1 and the base station in the working frequency band is related to the distance between the electronic device 1 and the base station, and may also be related to the posture of the electronic device 1 and other conditions.

[0067] In one embodiment, when the battery 110 is at the current voltage value and the current temperature value, when the maximum power of the antenna 150 in the working frequency band is the second power, even if the load 113 is pulled instantaneously and continuously, resulting in a smaller resistance of the load 113 (i.e., the first case described above); and / or, when the environment in which the electronic device 1 is located is low (i.e., the second case described above), the shutdown condition is not met. In this way, the battery 110 can release energy when the current voltage value is low and the current temperature is low, and the energy advantage of the battery 110 can be brought into play. For example, when the battery 110 is a silicon battery, the advantage of the high energy density of the silicon battery compared to the graphite battery 110 can be brought into play. Among them, the shutdown condition is that the current voltage value of the battery 110 is less than the threshold voltage (e.g., 3V) and the duration is a preset duration (e.g., 15 seconds).

[0068] In summary, in the electronic device 1 provided by one embodiment of the present application, when the current voltage value is greater than the target voltage, the maximum power of the RF front-end circuit 151 in the working frequency band is the first power. When the current voltage is less than or equal to the target voltage, the power management system 130 can use the current voltage value and the current temperature range to determine the level of power backoff for the RF front-end circuit 151, and determine the power backoff value corresponding to the working frequency band according to the working frequency band and the power backoff level of the antenna 150, and limit the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power backoff value, so that the maximum power of the RF front-end circuit 151 is the second power. Wherein, the second power is less than the first power. It can be seen that, compared with the current voltage of the battery 110 being greater than the target voltage, the electronic device 1 provided by the embodiment of the present application can be when the current voltage of the battery 110 is less than or equal to the target voltage, the maximum power of the RF front-end circuit 151 is the second power, and the second power is less than the first power. Even if the load 113 in the electronic device 1 becomes smaller, and / or the ambient temperature of the electronic device 1 is low, the battery 110 can continue to work without triggering the shutdown process, and the battery 110 continues to release energy, which can give full play to the energy advantage of the battery 110. In addition, when the current voltage is less than or equal to the target voltage, the power management system 130 limits the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power back-off value, which can extend the battery life of the battery 110 in the electronic device 1.

[0069] In one embodiment, the power management system 130 limits the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power back-off value, which may include reducing the average current of the RF front-end circuit 151. Alternatively, in other embodiments, limiting the maximum output power in the working frequency band may include reducing the peak current of the RF front-end circuit 151. Generally speaking, since the shutdown condition is that the current voltage value of the battery 110 is less than the threshold voltage (such as 3V) and the duration is a preset duration (such as 15 seconds). It can be seen that reducing the average current of the RF front-end circuit 151 plays a greater role in the maximum output power of the RF front-end circuit 151 in the working frequency band. In addition, as described above, since the battery 110 can be equivalent to a voltage source 111 and an internal resistance 112, when the average current of the RF front-end circuit 151 is reduced, the voltage drop of the internal resistance 112 is also reduced, which is equivalent to limiting the voltage drop of the internal resistance 112.

[0070] Next, various specific ways of performing power fallback when the current voltage value is less than or equal to the target voltage are introduced in detail.

[0071] Please also read Figure 4 and Figure 5 , Figure 4 A correspondence table of battery voltage, temperature range and corresponding power fallback level provided in one embodiment; Figure 5 A correspondence table of the working frequency band, power backoff level and power backoff value of the antenna provided in one embodiment. When the battery 110 has the same voltage value: the power backoff level corresponding to the electronic device 1 in the first temperature range is the first level, and the power backoff level corresponding to the electronic device 1 in the second temperature range is the second level, wherein the temperature in the first temperature range is greater than the temperature in the second temperature range, and the second level is greater than or equal to the first level. When the antenna 150 is in the same working frequency band: the first level corresponds to the first power backoff value, the second level corresponds to the second power backoff value, wherein the second power backoff value is greater than or equal to the first power backoff value.

[0072] exist Figure 4 In the figure, LV0, LV1, LV2, LV3 and LV4 represent the levels of power backoff. Among them, LV0 indicates that no power backoff is performed. From LV1 to LV4, the larger the value after LV, the larger the power backoff level. For example, taking the voltage value of the battery 110 as 3.25V, the first temperature interval is S0, which satisfies: 0℃≤S0<10℃, and the power backoff level corresponding to the electronic device 1 in the first temperature interval is the first level (specifically LV2). When the voltage value of the battery 110 is 3.25V, the second temperature interval is S0, which satisfies: -10℃≤S0<0℃, and the power backoff level corresponding to the electronic device 1 in the second temperature interval is the second level (specifically LV3). It can be seen that the second level is greater than the first level. Accordingly, please refer to Figure 5 , Figure 5 The power backoff values ​​of each operating frequency band of Long Term Evolution (LTE) and New Radio (NR) are shown in the figure. The unit of each power backoff value is dB. Taking the B1 band as an example, the first power backoff value corresponding to the first level (LV2 here) is 0.7dB, and the second power backoff value corresponding to the second level (LV3 here) is 1.7dB. It can be seen that the second power backoff value is greater than the first power backoff value. Please continue to refer to Figure 5 , taking the B3 frequency band as an example, the first power backoff value corresponding to the first level (LV2 in this case) is 0.7dB, and the second power backoff value corresponding to the second level (LV3 in this case) is 0.7dB. It can be seen that the second power backoff value is equal to the first power backoff value.

[0073] It can be understood that, taking the voltage of the battery 110 as 2.95V as an example, the first temperature interval is S0 which satisfies: 0℃≤S0<10℃, and the power fallback level corresponding to the electronic device 1 in the first temperature interval is the first level (specifically LV4). When the voltage value of the battery 110 is 2.95V, the second temperature interval is S0 which satisfies: -10℃≤S0<0℃, and the power fallback level corresponding to the electronic device 1 in the second temperature interval is the second level (specifically LV4). It can be seen that the second level is equal to the first level. Accordingly, please refer to Figure 5 For each working frequency band, in the same frequency band, the first power backoff value is equal to the second power backoff value.

[0074] In this embodiment, when the batteries 110 have the same voltage value: the power backoff level corresponding to the electronic device 1 in the first temperature range is the first level, and the power backoff level corresponding to the electronic device 1 in the second temperature range is the second level, wherein the temperature in the first temperature range is greater than the temperature in the second temperature range, and the second level is greater than or equal to the first level. When the antenna 150 is in the same operating frequency band: the first level corresponds to a first power back-off value, and the second level corresponds to a second power back-off value, wherein the second power back-off value is greater than or equal to the first power back-off value. It can be seen that the electronic device 1 provided in the embodiment of the present application can determine the power back-off level according to the temperature range to which the current temperature value of the electronic device 1 belongs when the battery 110 has the same voltage value, and determine the specific power back-off value according to the corresponding power back-off level, so that the battery 110 can be when the current voltage value is low and the current temperature is low, even if the load 113 is momentarily and continuously pulled, resulting in a smaller resistance of the load 113 (i.e., the first case described above); and / or, when the environment in which the electronic device 1 is located is low (i.e., the second case described above), the antenna 150 can continue to operate in the preset frequency band, the shutdown process will not be triggered, the battery 110 continues to release energy, and the energy advantage of the battery 110 can be brought into play.

[0075] For further information, please refer to Figure 5 , the fallback level of the electronic device 1 when it is in the first working frequency band is a preset level, wherein the preset level of the first working frequency band corresponds to a first preset power fallback value. The fallback level of the electronic device 1 when it is in the second working frequency band is a preset level, wherein the preset level of the second working frequency band corresponds to a second preset power fallback value, wherein the power consumption of the first working frequency band is less than the power consumption of the second working frequency band, and the second preset power fallback value is greater than the first preset power fallback value.

[0076] Combination Figure 5, take the first working frequency band as the B1 band, the second working frequency band as the N41 band, and the preset level as the LV3 level as an example for explanation. The power backoff value corresponding to the LV3 level of the B1 band is 1.7dB. In other words, when the electronic device 1 is in the first working frequency band B1 and the backoff level is LV3, the corresponding first preset power backoff value is 1.7dB. The power backoff value corresponding to the LV3 level of the N41 band is 3.7dB. In other words, when the electronic device 1 is in the second working frequency band N41 and the backoff level is LV3, the corresponding second preset power backoff value is 3.7dB. It can be seen that the second preset power backoff value is greater than the first preset power backoff value.

[0077] It can be seen that the electronic device 1 provided in the implementation manner of the present application has different power backoff values ​​corresponding to the same preset level when the electronic device 1 is in different working frequency bands. When the power consumption of the first working frequency band is less than the power consumption of the second working frequency band, the second preset power backoff value corresponding to the second working frequency band is greater than the first preset power backoff value corresponding to the first working frequency band. It can be seen that when the working frequency bands of the electronic device 1 provided in the implementation manner of the present application are different, the power backoff value corresponding to the working frequency band with high power consumption is large, and the power backoff value corresponding to the working frequency band with low power consumption is small. As a result, the electronic device 1 will not trigger the shutdown process in both the working frequency band with low power consumption and the working frequency band with high power consumption, and the battery 110 continues to release energy, which can give play to the energy advantage of the battery 110.

[0078] For the RF system of the antenna 150, the target power of the working frequency band is the maximum power allowed to be transmitted in the working frequency band. The target power of each working frequency band is different, so the power consumption of the RF system will be relatively different. For example, when the antenna 150 transmits electromagnetic wave signals in the same working frequency band, the power consumption of transmitting at a power of 26dBm is about doubled compared to the power consumption of transmitting at a power of 23dBm.

[0079] Secondly, the transmission modes of each working frequency band are different, and the power consumption is also different. For example, when the working frequency band supported by antenna 150 is the B1 band of LTE, the B1 band is frequency division duplexing (FDD), so the transmission signal (Tx) of the B1 band will be continuously transmitted. When the working frequency band supported by antenna 150 is the B41 band, the B41 band is time division duplexing (TDD), so the transmission signal (Tx) of the B41 band will be intermittently transmitted. The system power consumption consumed by continuous transmission is greater than the system power consumption of intermittent transmission. Therefore, the system power consumption of the B1 band is greater than the system power consumption of the B41 band.

[0080] In addition, by Figure 5It can also be seen that for different working frequency bands, different power limiting strategies are adopted to limit the overall power consumption of the system by limiting the output power of the RF front-end circuit 151. The detailed description is as follows.

[0081] In some working frequency bands with relatively low power (such as B5 band, B8 band, etc.), when the power of battery 110 is low (also called low power, when the power of battery 110 is low, the voltage of battery 110 is also low), even if full power is transmitted, the power consumption in the working frequency band will not be too large, and the voltage value of battery 110 of electronic device 1 will not be too low. Therefore, there is no need to perform power fallback on these working frequency bands. If power fallback is not required, the fallback level in the figure is marked as LV0.

[0082] In some operating frequency bands with relatively high power (such as N78 band, N41 band, etc., which are usually the second power class (Power class 2, PC2)), therefore, for operating frequency bands with relatively high power, when the power backoff level is high, more power needs to be backed off to ensure the system stability of the electronic device 1, so as to avoid shutting down the system.

[0083] In one implementation, when the voltage of the battery 110 is less than or equal to a preset voltage threshold, the power management system 130 acquires the current voltage value of the battery 110 .

[0084] In one embodiment, when the voltage of the battery 110 is less than or equal to a preset voltage threshold, if the strategy without power fallback is continued to work, the electronic device 1 is likely to shut down automatically; if the power fallback scheme provided in the embodiment of the present application is adopted, the electronic device 1 will not shut down and will continue to work. For example, when the battery 110 is a single cell, the preset voltage threshold may be a voltage value in the range of 3.0V to 3.35V. For example, the preset voltage threshold may be, but is limited to, 3.0V, or 3.05V, or 3.10V, or 3.15V, or 3.20V, or 3.25V, or 3.30V, or 3.35V.

[0085] It can be understood that when the voltage of the battery 110 is greater than the preset voltage threshold, the electronic device 1 does not adopt the power back-off strategy. Specifically, when the voltage of the battery 110 is greater than the preset voltage value, the maximum output power of the antenna 150 in the working frequency band is the first power. When the voltage of the battery 110 is less than or equal to the preset voltage threshold, the maximum power of the RF front-end circuit 151 in the working frequency band is limited according to the power back-off value in accordance with the technical means described above. After limiting the maximum power of the RF front-end circuit 151 in the working frequency band according to the power back-off value, the maximum output power of the antenna 150 in the working frequency band is the second power, wherein the second power is less than the first output power.

[0086] In the embodiment of the present application, when the voltage of the battery 110 is less than or equal to the preset voltage threshold, the power management system 130 obtains the current voltage value of the battery 110, and the power management system 130 can use the current voltage value and the current temperature range to determine the level of power backoff for the RF front-end circuit 151, and determine the power backoff value corresponding to the working frequency band according to the working frequency band of the antenna 150 and the power backoff level, and limit the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power backoff value, so that the battery 110 can continue to work when the current voltage value is low and the current temperature is low, and the shutdown process will not be triggered. The battery 110 continues to release energy and can give full play to the energy advantage of the battery 110. In addition, limiting the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power backoff value can extend the battery life of the battery 110 in the electronic device 1.

[0087] See also Figure 3 The RF front-end circuit 151 includes a transceiver 1511 (Transceiver) and a power amplifier 1512 (PA). The transceiver 1511 is electrically connected to the power management system 130. The power amplifier 1512 is electrically connected to the transceiver 1511 and the radiator 152, respectively. The power amplifier 1512 has a preset gain. The power management system 130 is used to limit the maximum output power of the transceiver 1511 in the working frequency band according to the power back-off value.

[0088] In one embodiment, the transceiver 1511 is used to transmit and receive radio frequency signals. The power amplifier 1512 is electrically connected to the transceiver 1511, and the power amplifier 1512 is used to amplify the radio frequency signal by a preset multiple, and transmit the radio frequency signal amplified by the preset multiple to the radiator 152. The radiator 152 obtains an electromagnetic wave signal according to the radio frequency signal amplified by the preset multiple.

[0089] The ability of the power amplifier 1512 to amplify the RF signal by the preset multiple is also referred to as the preset gain of the power amplifier 1512. The power amplifier 1512 has a preset gain, which is generally a fixed value. The power management system 130 provided in the embodiment of the present application limits the maximum output power of the transceiver 1511 in the working frequency band according to the power back-off value, so that the battery 110 can continue to work when the current voltage value is low and the current temperature is low, and the shutdown process will not be triggered. The battery 110 continues to release energy, and the energy advantage of the battery 110 can be brought into play. In addition, by limiting the maximum output power of the transceiver 1511 in the working frequency band according to the power back-off value, the battery life of the battery 110 in the electronic device 1 can be extended.

[0090] In this embodiment, the electronic device 1 includes a DC converter 160 (DCDC). The battery 110 is electrically connected to the power amplifier 1512 via the DC converter 160 .

[0091] The battery 110 is used to output a first voltage, wherein the first voltage is a DC voltage. The battery 110 is electrically connected to the power amplifier 1512 through the DC converter 160. Specifically, the input end of the DC converter 160 is electrically connected to the battery 110 for receiving the first voltage, and the DC converter 160 converts the first voltage to obtain a converted voltage. The output end of the DC converter 160 is electrically connected to the power amplifier 1512 to supply power to the power amplifier 1512.

[0092] In other words, in this embodiment, the power supply of the power amplifier 1512 is powered by the DC converter 160. The electronic device 1 includes a DC converter 160 (DC to DC, DCDC). The DC converter 160 is also called a DC-DC converter 160. The battery 110 is electrically connected to the power amplifier 1512 through the DC converter 160. The advantage of the battery 110 being electrically connected to the power amplifier 1512 through the DC converter 160 to power the power amplifier 1512 is that when the voltage of the battery 110 is high and the output power is low, the DC converter 160 can be placed in a step-down mode (i.e., buck mode). That is, the voltage value of the converted voltage obtained by converting the first voltage through the DC converter 160 is less than the voltage value of the first voltage. In this way, power consumption can be saved.

[0093] In addition, when the voltage of the battery 110 is low and the output power is high, the DC converter 160 can be placed in a boost mode (i.e., boost mode). That is, the voltage value of the converted voltage obtained by converting the first voltage by the DC converter 160 is greater than the voltage value of the first voltage. In this way, the performance requirements of the system of the electronic device 1 on the voltage value can be met.

[0094] When the RF front-end circuit 151 includes a transceiver 1511 (Transceiver) and a power amplifier 1512 (PA), and when the electronic device 1 includes a DC converter 160 (DCDC), the RF path of the electronic device 1 is: transceiver 1511-power amplifier 1512-radiator 152; the power path of the electronic device 1 is: battery 110-DC converter 160-power amplifier 1512.

[0095] See also Figure 6 , Figure 6 For another embodiment Figure 2 Circuit block diagram of the electronic device in. In this embodiment, the electronic device 1 includes a battery 110, a temperature sensor 120, a power management system 130 and an antenna 150. The temperature sensor 120 is used to detect the current temperature value of the electronic device 1. The power management system 130 is electrically connected to the battery 110, and is used to obtain the current voltage value of the battery 110. The power management system 130 is also electrically connected to the temperature sensor 120, and is used to obtain the current temperature value of the electronic device 1 and determine the current temperature range to which the current temperature value belongs. The antenna 150 includes a radio frequency front-end circuit 151 and a radiator 152. The radio frequency front-end circuit 151 is electrically connected to the power management system 130, and the radio frequency front-end circuit 151 is also electrically connected to the radiator 152. The battery 110 is used to be electrically connected to the radio frequency front-end circuit 151. When the current voltage value is greater than the target voltage, the maximum power of the radio frequency front-end circuit 151 in the working frequency band is the first power. The power management system 130 is used to determine the power backoff level for power backoff of the RF front-end circuit 151 according to the current voltage value and the current temperature range when the current voltage value is less than or equal to the target voltage, determine the power backoff value corresponding to the working frequency band according to the working frequency band of the antenna 150 and the power backoff level, and limit the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power backoff value so that the maximum power of the RF front-end circuit 151 is the second power. The second power is less than the first power.

[0096] Further, the RF front-end circuit 151 includes a transceiver 1511 (Transceiver) and a power amplifier 1512 (PA). The transceiver 1511 is electrically connected to the power management system 130. The power amplifier 1512 is electrically connected to the transceiver 1511 and the radiator 152, respectively. The power amplifier 1512 has a preset gain. The power management system 130 is used to limit the maximum output power of the transceiver 1511 in the working frequency band according to the power back-off value.

[0097] For the various components in the electronic device 1 provided in this embodiment, please refer to the previous description and will not be repeated here.

[0098] In this embodiment, the battery 110 is directly electrically connected to the power amplifier 1512. Figure 3 In the electronic device 1 shown in the embodiment, the electronic device 1 includes a DC converter 160, and the battery 110 is electrically connected to the power amplifier 1512 via the DC converter 160. Figure 6 In the electronic device 1 shown in the embodiment, the electronic device 1 does not include a DC converter, and the battery 110 is directly electrically connected to the power amplifier 1512 .

[0099] For example, when the antenna 150 is a Global System for Mobile Communications (GSM) antenna 150 , the electronic device 1 does not include a DC converter 160 , and the battery 110 is directly electrically connected to the power amplifier 1512 .

[0100] Regardless of whether the electronic device 1 includes a DC converter 160, as long as the power management system 130 obtains the current voltage value of the battery 110, the power management system 130 can use the current voltage value and the current temperature range to determine the level of power backoff for the RF front-end circuit 151 when the current voltage value is less than or equal to the target voltage, and determine the power backoff value corresponding to the working frequency band according to the working frequency band of the antenna 150 and the power backoff level, and limit the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power backoff value, so that the maximum power of the RF front-end circuit 151 is the second power. Wherein, the second power is less than the first power. It can be seen that, compared with the current voltage of the battery 110 being greater than the target voltage, the electronic device 1 provided in the embodiment of the present application can, when the current voltage of the battery 110 is less than or equal to the target voltage, the maximum power of the RF front-end circuit 151 is the second power, and the second power is less than the first power. Even if the load 113 in the electronic device 1 becomes smaller, and / or the ambient temperature of the electronic device 1 is low, the battery 110 can continue to work, and the shutdown process will not be triggered. The battery 110 continues to release energy, and the energy advantage of the battery 110 can be brought into play. In addition, when the current voltage is less than or equal to the target voltage, the power management system 130 limits the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power back-off value, which can extend the battery life of the battery 110 in the electronic device 1.

[0101] See also Figure 3 or Figure 4 The battery 110 is a single battery. The power management system 130 obtains the current voltage value of the single battery as the current voltage value, or the power management system 130 obtains the current voltage value of the antenna 150 as the current voltage value.

[0102] The types of batteries 110 in the electronic device 1 may include single batteries (also called single-cell batteries) and dual batteries (also called dual-cell batteries). The battery 110 in the electronic device 1 may be a single battery or a dual battery. The so-called single battery refers to a single-cell battery 110, and the so-called dual battery refers to a battery 110 including two cells (also called dual cells), and the two cells in the dual battery are connected in series. For example, when the electronic device 1 is a mobile phone, the voltage of the single-cell battery 110 is 4V. Since the two cells in the dual battery are connected in series, the voltage of the dual cell is 8V. Generally speaking, the system power supply voltage of the electronic device 1 is generally 4V. For a single battery, the current voltage value of the single battery may be the current voltage value. In addition, by Figure 1 It can be seen that when the battery 110 is a single cell, the voltage VBAT of the single cell is also equal to the voltage VPH of the load 113 .

[0103] Therefore, when the battery 110 is a single battery: the power management system 130 obtains the current voltage value of the single battery as the current voltage value, or the power management system 130 obtains the current voltage value of the antenna 150 as the current voltage value, and the current voltage value can more accurately reflect the current voltage value of the battery 110. Thus, the power management system 130 of the electronic device 1 can more accurately determine the level of power backoff for the RF front-end circuit 151 using the current voltage value and the current temperature range, and more accurately determine the power backoff value corresponding to the working frequency band according to the working frequency band and the power backoff level of the antenna 150, and more accurately limit the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power backoff value, so that the battery 110 can continue to work when the current voltage value is low and the current temperature is low, and the shutdown process will not be triggered. The battery 110 continues to release energy and can give full play to the energy advantage of the battery 110.

[0104] See also Figure 7 , Figure 7 This is a partial circuit diagram of an electronic device according to an embodiment of the present application when it includes dual batteries. Figure 7 (a) is a partial circuit diagram when the battery of the electronic device is a dual battery; Figure 7 (b) in Figure 7 Schematic diagram of some parameters of (a) in FIG. In this embodiment, when the battery 110 is a dual battery, the power management system 130 obtains the current voltage value of the dual battery as the current voltage value.

[0105] As can be seen from the previous introduction, the types of batteries 110 in the electronic device 1 may include single batteries and dual batteries. The battery 110 in the electronic device 1 may be a single battery or a dual battery. The so-called single battery refers to a battery 110 with a single cell, and the so-called dual battery refers to a battery 110 including two cells (also called dual cells), and the two cells in the dual battery are connected in series. For example, when the electronic device 1 is a mobile phone, the voltage of the single-cell battery 110 is 4V. Since the two cells in the dual battery are connected in series, the voltage of the dual cell is 8V. Generally speaking, the battery voltage VBAT of the electronic device 1 is generally 4V. For a single battery, the current voltage value of the single battery can be the current voltage value. In addition, by Figure 1 It can be seen that when the battery 110 is a single cell, the voltage VBAT of the single cell is also equal to the voltage VPH of the load 113. For a dual cell, the output voltage VBAT of the dual cell is 8V. The system power supply voltage of the electronic device 1 is 4V. Therefore, for the dual-cell battery 110, the power management system 130 obtains the current voltage value of the dual cell as the current voltage value. Please refer to Figure 7 In (a) and (b), taking the voltage value VCC of the voltage source 111 = 8V and the resistance value R0 of the internal resistor 112 = 0.2V as an example, then the battery voltage VBAT of the battery 110 = 7.8V and the voltage VPH of the load 113 = 3.9V. That is, the voltage VPH of the load 113 is half of the battery voltage VBAT of the battery 110.

[0106] Please also read Figure 4 and Figure 8 , Figure 8 A corresponding relationship table of battery voltage, temperature range and corresponding power fallback level provided in another embodiment. Figure 8 The battery voltage values ​​shown in Figure 4 The batteries shown in the figure have different voltage values.

[0107] Regardless of whether the battery 110 of the electronic device 1 is a single battery or a dual battery, Figure 4 and Figure 8 The voltage values ​​are different, but the core invention points are the same. When the battery 110 of the electronic device 1 is a dual battery, the target voltage can be, but is not limited to, 6.7V, 6.65V, or 6.6V.

[0108] Therefore, when the battery 110 is a dual battery: the current voltage value of the dual battery is obtained as the current voltage value, and the current voltage value can more accurately reflect the current voltage value of the battery 110. Therefore, the current voltage value and the current temperature range can be used to more accurately determine the level of power backoff for the RF front-end circuit 151, and the power backoff value corresponding to the working frequency band can be more accurately determined according to the working frequency band of the antenna 150 and the power backoff level, and the maximum output power of the RF front-end circuit 151 in the working frequency band can be more accurately limited according to the power backoff value, so that the battery 110 can continue to work when the current voltage value is low and the current temperature is low, and the shutdown process will not be triggered. The battery 110 continues to release energy and can give full play to the energy advantage of the battery 110.

[0109] Please also read Figure 6 , Figure 7 and Fig. 9 , Fig. 9 For yet another embodiment Figure 2The circuit block diagram of the electronic device in FIG. The battery 110 is used to output a first voltage. The electronic device 1 further includes a half-voltage chip 170 (Charge Pump) (also called a half-voltage IC). The half-voltage chip 170 is electrically connected to the battery 110 and is used to obtain a second voltage according to the first voltage, wherein the voltage value of the second voltage is half of the voltage value of the first voltage. The half-voltage chip 170 is electrically connected to the power amplifier 1512.

[0110] When the battery 110 is a dual battery, since the electronic device 1 further includes a half-voltage chip 170, the output voltage (VBAT) of the battery 110 is not equal to the system voltage of the electronic device 1. The system voltage of the electronic device 1 is equal to half the voltage of the battery 110. As described above, the battery 110 is equivalent to a voltage source 111 and an internal resistor 112 connected in series. If the voltage of the voltage source 111 is 8V and the voltage division of the internal resistor 112 is 0.2V, then the output voltage of the battery 110 is the voltage value obtained by subtracting the voltage division of the internal resistor 112 from the voltage of the voltage source 111, which is 7.8V. In other words, the first voltage of the battery 110 is 7.8V, and after passing through the half-voltage chip 170, the output system voltage is 3.9V. The system voltage is used to power the load 113 (such as the antenna 150) of the electronic device 1, so the system voltage is also called the load voltage VPH.

[0111] In this embodiment, when the battery 110 of the electronic device 1 is a dual battery, the electronic device 1 further includes a half-voltage chip 170, and the half-voltage chip 170 is electrically connected to the power amplifier 1512. It can be seen that the battery 110 sequentially connects the half-voltage chip 170 to the power amplifier 1512. In this embodiment, the electronic device 1 does not include a DC converter 160. The second voltage branch output by the half-voltage chip 170 supplies power to the power amplifier 1512. When the electronic device 1 does not include a DC converter 160, the electronic device 1 has fewer components, which is convenient for the battery 110, the temperature sensor 120, the power management system 130 and other components in the electronic device 1.

[0112] Please also read Figure 6 , Figure 7 and Fig.10 , Fig.10 For yet another embodiment Figure 2The circuit block diagram of the electronic device in the embodiment of the present invention is shown in FIG. The battery 110 is used to output a first voltage. The electronic device 1 also includes a half-voltage chip 170 (Charge Pump) (also called a half-voltage IC). The half-voltage chip 170 is electrically connected to the battery 110 and is used to obtain a second voltage according to the first voltage, wherein the voltage value of the second voltage is half of the voltage value of the first voltage. The electronic device 1 also includes a DC converter 160, and the half-voltage chip 170 is electrically connected to the power amplifier 1512 through the DC converter 160.

[0113] In this embodiment, when the battery 110 is a dual battery, the dual battery can provide sufficient power for the RF front-end circuit 151 of the antenna 150 in the electronic device 1. The electronic device 1 includes a half-voltage converter, which can convert the first voltage output by the battery 110 into a second voltage to match the voltage required by the RF front-end circuit 151 of the antenna 150. In addition, the electronic device 1 includes a DC converter 160, and the battery 110 is electrically connected to the power amplifier 1512 through the DC converter 160. The advantage of the battery 110 being electrically connected to the power amplifier 1512 through the DC converter 160 to power the power amplifier 1512 is that when the voltage of the battery 110 is high and the output power is low, the DC converter 160 can be placed in a step-down mode (i.e., buck mode). That is, the voltage value of the converted voltage obtained by converting the first voltage through the DC converter 160 is less than the voltage value of the first voltage. In this way, power consumption can be saved.

[0114] In addition, when the voltage of the battery 110 is low and the output power is high, the DC converter 160 can be placed in a boost mode (i.e., boost mode). That is, the voltage value of the converted voltage obtained by converting the first voltage by the DC converter 160 is greater than the voltage value of the first voltage. In this way, the performance requirements of the system of the electronic device 1 on the voltage value can be met.

[0115] See also Fig.11 , Fig.11 For yet another embodiment Figure 2Circuit block diagram of an electronic device in. In this embodiment, the electronic device 1 further includes a DC converter 160, and the DC converter 160 is electrically connected to the battery 110. The RF front-end circuit 151 includes a transceiver 1511, a first power amplifier 1513, and a second power amplifier 1514. The transceiver 1511 is electrically connected to the power management system 130, the first power amplifier 1513 is electrically connected to the transceiver 1511 and the DC converter 160, and the second power amplifier 1514 is electrically connected to the transceiver 1511 and electrically connected to the battery 110. The radiator 152 includes a first radiation branch 1521 and a second radiation branch 1522, the first radiation branch 1521 is electrically connected to the first power amplifier 1513, and the second radiation branch 1522 is electrically connected to the second power amplifier 1514.

[0116] In this embodiment, the battery 110 is a single battery. The battery 110 supplies power to the first power amplifier 1513 through the DC converter 160 ; and the battery 110 supplies power to the second power amplifier 1514 directly.

[0117] The transceiver 1511 is used to transmit a radio frequency signal. Specifically, the transceiver 1511 is used to transmit and receive a first radio frequency signal and a second radio frequency signal. The first power amplifier 1513 is used to amplify the first radio frequency signal by a first preset multiple. The first radio frequency signal amplified by the first preset multiple is output to the first radiation branch 1521. Correspondingly, the second power amplifier 1514 is used to amplify the second radio frequency signal by a second preset multiple. The second radio frequency signal amplified by the second preset multiple is output to the second radiation branch 1522.

[0118] In this embodiment, the antenna 150 of the electronic device 1 includes a first antenna and a second antenna. The first antenna includes a transceiver 1511, a first power amplifier 1513, and a first radiation branch 1521. The second antenna includes the transceiver 1511, a second power amplifier 1514, and a second radiation branch 1522.

[0119] For the first antenna, when the current voltage value is less than or equal to the target voltage, the power management system 130 is used to: determine the power backoff level for power backoff of the RF front-end circuit 151 according to the current voltage value and the current temperature range, determine the power backoff value corresponding to the working frequency band of the first antenna according to the working frequency band of the first antenna and the power backoff level, and limit the maximum output power of the RF front-end circuit 151 in the working frequency band of the first antenna according to the power backoff value, so that the maximum power of the RF front-end circuit 151 is the first sub-power in the second power. The first sub-power of the second power is less than the first power.

[0120] For the second antenna, when the current voltage value is less than or equal to the target voltage, the power management system 130 is used to: determine the power backoff level for power backoff of the RF front-end circuit 151 according to the current voltage value and the current temperature range, determine the power backoff value corresponding to the working frequency band of the second antenna according to the working frequency band of the second antenna and the power backoff level, and limit the maximum output power of the RF front-end circuit 151 in the working frequency band of the second antenna according to the power backoff value so that the maximum power of the RF front-end circuit 151 is the second sub-power in the second power. The second sub-power of the second power is less than the first power.

[0121] In summary, in the electronic device 1 provided in one embodiment of the present application, when the current voltage value is less than or equal to the target voltage, the power management system 130 can use the current voltage value and the current temperature range to determine the level of power backoff for the RF front-end circuit 151, and determine the power backoff value corresponding to the working frequency band of the first antenna according to the working frequency band of the first antenna and the power backoff level, and limit the maximum output power of the RF front-end circuit 151 in the working frequency band of the first antenna according to the power backoff value, so that the maximum power of the RF front-end circuit 151 is the first sub-power of the second power, wherein the first sub-power is less than the first power. It can be seen that, compared with the current voltage of the battery 110 being greater than the target voltage, the electronic device 1 provided in the embodiment of the present application can limit the maximum power of the RF front-end circuit 151 to the first sub-power of the second power when the current voltage of the battery 110 is less than or equal to the target voltage, wherein the first sub-power is less than the first power. Even if the load 113 in the electronic device 1 becomes smaller, and / or the ambient temperature of the electronic device 1 is low, the battery 110 can continue to work without triggering the shutdown process, and the battery 110 continues to release energy, which can give full play to the energy advantage of the battery 110. In addition, when the current voltage is less than or equal to the target voltage, the power management system 130 limits the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power back-off value, which can extend the battery life of the battery 110 in the electronic device 1.

[0122] In summary, in the electronic device 1 provided in one embodiment of the present application, when the current voltage value is less than or equal to the target voltage, the power management system 130 can use the current voltage value and the current temperature range to determine the level of power backoff for the RF front-end circuit 151, and determine the power backoff value corresponding to the working frequency band of the second antenna according to the working frequency band of the second antenna and the power backoff level, and limit the maximum output power of the RF front-end circuit 151 in the working frequency band of the second antenna according to the power backoff value, so that the maximum power of the RF front-end circuit 151 is the second sub-power of the second power, wherein the second sub-power is less than the first power. It can be seen that, compared with the current voltage of the battery 110 being greater than the target voltage, the electronic device 1 provided in the embodiment of the present application can limit the maximum power of the RF front-end circuit 151 to the second sub-power of the second power when the current voltage of the battery 110 is less than or equal to the target voltage, wherein the second sub-power is less than the first power. Even if the load 113 in the electronic device 1 becomes smaller, and / or the ambient temperature of the electronic device 1 is low, the battery 110 can continue to work without triggering the shutdown process, and the battery 110 continues to release energy, which can give full play to the energy advantage of the battery 110. In addition, when the current voltage is less than or equal to the target voltage, the power management system 130 limits the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power back-off value, which can extend the battery life of the battery 110 in the electronic device 1.

[0123] See also Fig.12 , Fig.12 For another embodiment Figure 2 Circuit block diagram of an electronic device in . The battery 110 is used to output a first voltage. The electronic device 1 also includes a half-voltage chip 170 and a DC converter 160. The half-voltage chip 170 is electrically connected to the battery 110, and is used to obtain a second voltage according to the first voltage, wherein the voltage value of the second voltage is half of the voltage value of the first voltage, and the DC converter 160 is electrically connected to the half-voltage chip 170. The RF front-end circuit 151 includes a transceiver 1511, a first power amplifier 1513, and a second power amplifier 1514. The transceiver 1511 is electrically connected to the power management system 130, the first power amplifier 1513 is electrically connected to the transceiver 1511 and the DC converter 160, and the second power amplifier 1514 is electrically connected to the transceiver 1511 and electrically connected to the half-voltage chip 170. The radiator 152 includes a first radiation branch 1521 and a second radiation branch 1522 . The first radiation branch 1521 is electrically connected to the first power amplifier 1513 , and the second radiation branch 1522 is electrically connected to the second power amplifier 1514 .

[0124] In this embodiment, the battery 110 is a dual battery. The battery 110 supplies power to the first power amplifier 1513 through the half-voltage chip 170 and the DC converter 160 ; and the battery 110 supplies power to the second power amplifier 1514 through the half-voltage chip 170 .

[0125] In this embodiment, the antenna 150 of the electronic device 1 includes a first antenna and a second antenna. The first antenna includes a transceiver 1511, a first power amplifier 1513, and a first radiation branch 1521. The second antenna includes the transceiver 1511, a second power amplifier 1514, and a second radiation branch 1522.

[0126] For the first antenna, the power management system 130 is used to: determine the power backoff level for power backoff of the RF front-end circuit 151 according to the current voltage value and the current temperature range, determine the power backoff value corresponding to the operating frequency band of the first antenna according to the operating frequency band of the first antenna and the power backoff level, and limit the maximum output power of the RF front-end circuit 151 in the operating frequency band of the first antenna according to the power backoff value.

[0127] For the second antenna, the power management system 130 is used to: determine the power backoff level for power backoff of the RF front-end circuit 151 according to the current voltage value and the current temperature range, determine the power backoff value corresponding to the operating frequency band of the second antenna according to the operating frequency band of the second antenna and the power backoff level, and limit the maximum output power of the RF front-end circuit 151 in the operating frequency band of the second antenna according to the power backoff value.

[0128] In summary, when the current voltage value of the battery 110 is less than the target voltage, the electronic device 1 provided in one embodiment of the present application, the power management system 130 can use the current voltage value and the current temperature range to determine the level of power backoff for the RF front-end circuit 151, and determine the power backoff value corresponding to the working frequency band of the first antenna according to the working frequency band of the first antenna and the power backoff level, and limit the maximum output power of the RF front-end circuit 151 in the working frequency band of the first antenna according to the power backoff value, so that the battery 110 can continue to work when the current voltage value is low and the current temperature is low, and the shutdown process will not be triggered. The battery 110 continues to release energy and can give play to the energy advantage of the battery 110. In addition, by limiting the maximum output power of the RF front-end circuit 151 in the working frequency band of the first antenna according to the power backoff value, the battery life of the battery 110 in the electronic device 1 can be extended.

[0129] In summary, when the current voltage value of the battery 110 is less than the target voltage, the power management system 130 of the electronic device 1 provided in one embodiment of the present application can use the current voltage value and the current temperature range to determine the level of power backoff for the RF front-end circuit 151, and determine the power backoff value corresponding to the working frequency band of the second antenna according to the working frequency band of the second antenna and the power backoff level, and limit the maximum output power of the RF front-end circuit 151 in the working frequency band of the second antenna according to the power backoff value, so that the battery 110 can continue to work when the current voltage value is low and the current temperature is low, and the shutdown process will not be triggered. The battery 110 continues to release energy and can give play to the energy advantage of the battery 110. In addition, by limiting the maximum output power of the RF front-end circuit 151 in the working frequency band of the second antenna according to the power backoff value, the battery life of the battery 110 in the electronic device 1 can be extended.

[0130] Further, in one embodiment, the negative electrode material of the battery 110 of the electronic device 1 provided in any of the above embodiments of the present application includes silicon. With the development of electronic devices 1, the battery life of electronic devices 1 has become a focus of consumer attention. In order to improve the battery life of electronic devices 1, the negative electrode material of the battery 110 in the electronic device 1 can include silicon, that is, silicon negative electrode battery technology. In one embodiment, a certain proportion of silicon negative electrode ions can be added to the graphite negative electrode of the battery 110 to achieve the purpose of improving the battery life of the battery 110. When the battery 110 is at low power, the operating voltage of the battery 110 is low. For example, the operating voltage of the original graphite battery 110 is about 3.4V when the battery 110 is at low power, while the operating voltage of the battery 110 in the silicon negative electrode battery technology at low power will be reduced to 3.0V or even 2.5V. Therefore, for the technical solution that the negative electrode material of the battery 110 includes silicon, while improving the battery life of the electronic device 1, the importance of ensuring the communication performance of the electronic device 1 at low voltage is also improved.

[0131] In summary, the electronic device 1 provided in an embodiment of the present application, when the electronic device 1 is in a low power state (e.g., the current voltage value of the battery 110 is less than or equal to the target voltage) and in a low temperature state (e.g., the current temperature of the electronic device 1 is less than or equal to the target temperature), if the antenna 150 of the electronic device 1 continues to transmit at a relatively high power, it is possible that the voltage of the battery 110 is pulled too low, thereby causing the electronic device 1 to shut down, and thus resulting in the failure to exert the high energy density advantage of the battery 110 (e.g., silicon battery). The electronic device 1 provided in an embodiment of the present application combines the three factors of the power, temperature, and load 113 of the electronic device 1, determines the power backoff level according to the power of the battery 110 of the electronic device 1 (i.e., the current voltage value of the battery 110) and the temperature of the electronic device 1, and then determines the power backoff value corresponding to the working frequency band according to the power backoff level, so as to ensure that in an extreme scenario, the output power of the antenna 150 of the electronic device 1 will not be too high, thereby reducing or even avoiding the situation of shutting down the electronic device 1, and therefore, the high energy density advantage of the battery 110 can still be effectively exerted when the power of the battery 110 is low. Without increasing the cost of the electronic device 1 or the volume of the battery 110 of the electronic device 1 , the actual battery life of the electronic device 1 is improved, and the user experience of the user when using the electronic device 1 is improved.

[0132] In one embodiment, the electronic device 1 provided in the embodiment of the present application has different power consumption in each working frequency band. Therefore, a separate power backoff value is set for each power backoff level according to the power consumption of the working frequency band of the antenna 150.

[0133] Please refer to the drawings of the electronic device 1 provided in the previous embodiment and also to Fig.13 , Fig.13A flowchart of a power backoff method for a radio frequency signal provided in one embodiment of the present application. The power backoff method is applied to an electronic device 1. The electronic device 1 includes a battery 110 and an antenna 150. The antenna 150 includes a radio frequency front-end circuit 151. It can be understood that the various steps in the power backoff method can be completed by the corresponding components of the electronic device 1 provided in the previous embodiment. The electronic device 1 and the corresponding components in the electronic device 1 can refer to the previous description and will not be repeated here. The power backoff method includes S110, S120, S130, S140 and S150. Next, S110, S120, S130, S140 and S150 are described in detail. It can be understood that S110, S120, S130, S140 and S150 included in the power backoff method should not be understood as a limitation on the steps included in the power backoff method, nor should they be understood as a limitation on the order of precedence. For example, there is no necessary sequence between S110 and S120 , S110 may be placed before S120 , or S110 may be placed after S120 , or S110 and S120 may be performed simultaneously.

[0134] S110, obtaining a current voltage value of the battery 110, when the current voltage is greater than a target voltage, the maximum power of the RF front-end circuit 151 in the working frequency band is a first power.

[0135] In this embodiment, a lithium battery (also called a silicon battery) whose negative electrode material is silicon is used as an example for description. The battery 110 can be a single battery or a dual battery, which is not limited in this embodiment.

[0136] The power management system 130 is electrically connected to the battery 110 and is used to obtain the current voltage value of the battery 110. For example, the current voltage value of the battery 110 may be, but is not limited to, 3.35V, 3.25V, 3.10V, 2.95V, or 2.80V. As described above, if the current voltage value of the battery 110 is less than the threshold voltage (such as 3V) and lasts for a preset time (such as 15 seconds), it will be considered that the battery 110 of the electronic device 1 is insufficient, and the electronic device 1 is shut down.

[0137] S120, obtaining a current temperature value of the electronic device 1, and determining a current temperature range to which the current temperature value belongs.

[0138] The temperature sensor 120 is used to detect the current temperature value of the electronic device 1. The embodiment of the present application does not limit the type of the temperature sensor 120.

[0139] For example, the temperature interval can be divided according to the high and low temperatures. A temperature interval may include one or two temperature endpoint values. By determining the endpoint values, the temperature interval can be determined. For example, the temperature endpoint values ​​are -10°C, 0°C, 10°C, and 25°C. Therefore, the temperature S0 satisfies: S0<-10°C is a temperature interval (named as temperature interval a); S0 satisfies: -10°C≤S0<0°C is a temperature interval (named as temperature interval b); S0 satisfies: 0°C≤S0<10°C is a temperature interval (named as temperature interval c); S0 satisfies: 10°C≤S0<25°C is a temperature interval (named as temperature interval d); S0 satisfies: 25°C≤S0 is a temperature interval (named as temperature interval e).

[0140] The power management system 130 is electrically connected to the temperature sensor 120, and the user obtains the current temperature value and determines the temperature interval described by the current temperature value. Specifically, when the current temperature value falls within the corresponding temperature interval, the temperature interval into which the current temperature value falls is the temperature interval to which the current temperature value belongs, that is, the current temperature interval. For example, if the current temperature value is -5°C, it falls into the temperature interval of -10°C≤S0<0°C (that is, temperature interval b). Therefore, when the current temperature value is -5°C, the current temperature interval to which it belongs is temperature interval b.

[0141] S130: When the current voltage value is less than or equal to the target voltage, determine a power backoff level for performing power backoff on the RF front-end circuit 151 according to the current voltage value and the current temperature range.

[0142] S140, determining a power backoff value corresponding to the working frequency band according to the working frequency band and the power backoff level of the antenna 150.

[0143] In one embodiment, when the battery 110 is at a current voltage value and the electronic device 1 is at a current temperature value, the power of the antenna 150 in the working frequency band is a first power. The power management system 130 limits the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power back-off value. After limiting the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power back-off value, the power of the antenna 150 in the working frequency band is a second power. The second power is less than the first power. The first power minus the power back-off value is equal to the second power.

[0144] In one embodiment, when the battery 110 is at the current voltage value and the current temperature value, and when the power of the antenna 150 in the working frequency band is the second power, the battery 110 does not meet the shutdown condition. In this way, the battery 110 can release energy even when the current voltage value is low and the current temperature is low, and the energy advantage of the battery 110 can be brought into play. For example, when the battery 110 is a silicon battery, the advantage of the high energy density of the silicon battery compared to the graphite battery 110 can be brought into play. Among them, the shutdown condition is that the current voltage value of the battery 110 is less than the threshold voltage (such as 3V) and the duration is a preset duration (such as 15 seconds).

[0145] S150: Limit the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power back-off value so that the maximum power of the RF front-end circuit 151 is a second power, wherein the second power is less than the first power.

[0146] In summary, in the power backoff method provided in one embodiment of the present application, when the current voltage value is greater than the target voltage, the maximum power of the RF front-end circuit 151 in the working frequency band is the first power. When the current voltage is less than or equal to the target voltage, the current voltage value and the current temperature range can be used to determine the level of power backoff for the RF front-end circuit 151, and the power backoff value corresponding to the working frequency band can be determined according to the working frequency band and the power backoff level, and the maximum output power of the RF front-end circuit 151 in the working frequency band can be limited according to the power backoff value, so that the maximum power of the RF front-end circuit 151 is the second power. Wherein, the second power is less than the first power. It can be seen that, compared with the current voltage of the battery 110 being greater than the target voltage, the power backoff method provided in the embodiment of the present application can be such that when the current voltage of the battery 110 is less than or equal to the target voltage, the maximum power of the RF front-end circuit 151 is the second power, and the second power is less than the first power. Even if the load 113 in the electronic device 1 becomes smaller, and / or the ambient temperature of the electronic device 1 is low, the battery 110 can continue to work without triggering the shutdown process, and the battery 110 continues to release energy, which can give full play to the energy advantage of the battery 110. In addition, when the current voltage is less than or equal to the target voltage, the power management system 130 limits the maximum output power of the RF front-end circuit 151 in the working frequency band according to the power back-off value, which can extend the battery life of the battery 110 in the electronic device 1.

[0147] Next, various specific ways of performing power fallback when the current voltage value is less than or equal to the target voltage are described in detail. Fig.14 and Fig.15 , Fig.14 for Fig.13 A schematic diagram of S131 included in S130; Fig.15 for Fig.13 Schematic diagram of S141 included in S140 in FIG. In one embodiment, S130 includes S131, and S131 is described in detail as follows.

[0148] S131, when the batteries 110 have the same voltage value: the power backoff level corresponding to the electronic device 1 in the first temperature range is the first level, and the power backoff level corresponding to the electronic device 1 in the second temperature range is the second level, wherein the temperature in the first temperature range is greater than the temperature in the second temperature range, and the second level is greater than or equal to the first level.

[0149] Accordingly, S140 includes S141, and S141 is described in detail as follows.

[0150] S141, when the antennas 150 are in the same operating frequency band: the first level corresponds to a first power backoff value, and the second level corresponds to a second power backoff value, wherein the second power backoff value is greater than or equal to the first power backoff value.

[0151] Please also read Figure 4 , with LV0, LV1, LV2, LV3 and LV4 representing the levels of power backoff. Among them, LV0 means that no power backoff is performed. From LV1 to LV4, the larger the value after LV, the larger the power backoff level. For example, taking the voltage value of the battery 110 as 3.25V, the first temperature interval is S0, which satisfies: 0℃≤S0<10℃, and the power backoff level corresponding to the electronic device 1 in the first temperature interval is the first level (specifically LV2). When the voltage value of the battery 110 is 3.25V, the second temperature interval is S0, which satisfies: -10℃≤S0<0℃, and the power backoff level corresponding to the electronic device 1 in the second temperature interval is the second level (specifically LV3). It can be seen that the second level is greater than the first level. Accordingly, please refer to Figure 5 , taking the B1 frequency band as an example, the first power backoff value corresponding to the first level (LV2 in this case) is 0.7dB, and the second power backoff value corresponding to the second level (LV3 in this case) is 1.7dB. It can be seen that the second power backoff value is greater than the first power backoff value. Please continue to refer to Figure 5 , taking the B3 frequency band as an example, the first power backoff value corresponding to the first level (LV2 in this case) is 0.7dB, and the second power backoff value corresponding to the second level (LV3 in this case) is 0.7dB. It can be seen that the second power backoff value is equal to the first power backoff value.

[0152] It can be understood that, taking the voltage of the battery 110 as 2.95V as an example, the first temperature interval is S0 which satisfies: 0℃≤S0<10℃, and the power fallback level corresponding to the electronic device 1 in the first temperature interval is the first level (specifically LV4). When the voltage value of the battery 110 is 2.95V, the second temperature interval is S0 which satisfies: -10℃≤S0<0℃, and the power fallback level corresponding to the electronic device 1 in the second temperature interval is the second level (specifically LV4). It can be seen that the second level is equal to the first level. Accordingly, please refer to Figure 5 For each working frequency band, in the same frequency band, the first power backoff value is equal to the second power backoff value.

[0153] In this embodiment, when the battery 110 has the same voltage value: the power backoff level corresponding to the electronic device 1 in the first temperature interval is the first level, and the power backoff level corresponding to the electronic device 1 in the second temperature interval is the second level, wherein the temperature of the first temperature interval is greater than the temperature of the second temperature interval, and the second level is greater than or equal to the first level. When the antenna 150 is in the same working frequency band: the first level corresponds to the first power backoff value, and the second level corresponds to the second power backoff value, wherein the second power backoff value is greater than or equal to the first power backoff value. It can be seen that the electronic device 1 provided in the embodiment of the present application can determine the power backoff level according to the temperature interval to which the current temperature value of the electronic device 1 belongs when the battery 110 has the same voltage value, and determine the specific power backoff value according to the corresponding power backoff level, so that the battery 110 can continue to work in the preset frequency band when the current voltage value is low and the current temperature is low, and the shutdown process will not be triggered. The battery 110 continues to release energy, and the energy advantage of the battery 110 can be brought into play.

[0154] See also Fig.16 , Fig.16 for Fig.13 Schematic diagram of S142 and S143 included in S140. In this embodiment, S140 also includes S142 and S143, which are described in detail as follows.

[0155] S142, the backoff level of the electronic device 1 when in the first working frequency band is a preset level, wherein the preset level of the first working frequency band corresponds to a first preset power backoff value.

[0156] S143, the backoff level of the electronic device 1 when it is in the second working frequency band is a preset level, wherein the preset level of the second working frequency band corresponds to a second preset power backoff value, wherein the power consumption of the first working frequency band is less than the power consumption of the second working frequency band, and the second preset power backoff value is greater than the first preset power backoff value.

[0157] Combination Figure 5 , take the first working frequency band as the B1 band, the second working frequency band as the N41 band, and the preset level as the LV3 level as an example for explanation. The power backoff value corresponding to the LV3 level of the B1 band is 1.7dB. In other words, when the electronic device 1 is in the first working frequency band B1 and the backoff level is LV3, the corresponding first preset power backoff value is 1.7dB. The power backoff value corresponding to the LV3 level of the N41 band is 3.7dB. In other words, when the electronic device 1 is in the second working frequency band N41 and the backoff level is LV3, the corresponding second preset power backoff value is 3.7dB. It can be seen that the second preset power backoff value is greater than the first preset power backoff value.

[0158] It can be seen that in the power backoff method provided in the implementation manner of the present application, when the electronic device 1 is in different working frequency bands, the power backoff values ​​corresponding to the same preset level are different. When the power consumption of the first working frequency band is less than the power consumption of the second working frequency band, the second preset power backoff value corresponding to the second working frequency band is greater than the first preset power backoff value corresponding to the first working frequency band. It can be seen that when the working frequency bands of the electronic device 1 provided in the implementation manner of the present application are different, the power backoff value corresponding to the working frequency band with high power consumption is larger, and the power backoff value corresponding to the working frequency band with low power consumption is smaller. As a result, the electronic device 1 will not trigger the shutdown process in both the working frequency band with low power consumption and the working frequency band with high power consumption, and the battery 110 continues to release energy, which can give play to the energy advantage of the battery 110.

[0159] For the RF system of the antenna 150, the target power of the working frequency band is the maximum power allowed to be transmitted in the working frequency band. The target power of each working frequency band is different, so the power consumption of the RF system will be relatively different. For example, when the antenna 150 transmits electromagnetic wave signals in the same working frequency band, the power consumption of transmitting at a power of 26dBm is about doubled compared to the power consumption of transmitting at a power of 23dBm.

[0160] Secondly, the transmission modes of each working frequency band are different, and the power consumption is also different. For example, when the working frequency band supported by antenna 150 is the B1 band of LTE, the B1 band is frequency division duplexing (FDD), so the transmission signal (Tx) of the B1 band will be continuously transmitted. When the working frequency band supported by antenna 150 is the B41 band, the B41 band is time division duplexing (TDD), so the transmission signal (Tx) of the B41 band will be intermittently transmitted. The system power consumption consumed by continuous transmission is greater than the system power consumption of intermittent transmission. Therefore, the system power consumption of the B1 band is greater than the system power consumption of the B41 band.

[0161] In addition, by Figure 5 It can also be seen that for different working frequency bands, different power limiting strategies are adopted to limit the overall power consumption of the system by limiting the output power of the RF front-end circuit 151. The detailed description is as follows.

[0162] In some working frequency bands with relatively low power (such as B5 band, B8 band, etc.), when the power of battery 110 is low (also called low power, when the power of battery 110 is low, the voltage of battery 110 is also low), even if full power is transmitted, the power consumption in the working frequency band will not be too large, and the voltage value of battery 110 of electronic device 1 will not be too low. Therefore, there is no need to perform power fallback on these working frequency bands. If power fallback is not required, the fallback level in the figure is marked as LV0.

[0163] In some operating frequency bands with relatively high power (such as N78 band, N41 band, etc.), the second power level (Power class 2, PC2) is usually used. Therefore, for operating frequency bands with relatively high power, when the power backoff level is high, more power needs to be backed off to ensure the system stability of the electronic device 1, so as to avoid shutting down the system.

[0164] In one implementation, when the battery 110 is a single battery, the S110 includes: acquiring a current voltage value of the single battery as the current voltage value, or acquiring a current voltage value of the antenna 150 as the current voltage value.

[0165] When the battery 110 is a dual battery, the S110 includes: acquiring a current voltage value of the dual battery as the current voltage value.

[0166] The types of batteries 110 in the electronic device 1 may include single batteries (also called single-cell batteries) and dual batteries (also called dual-cell batteries). The battery 110 in the electronic device 1 may be a single battery or a dual battery. The so-called single battery refers to a single-cell battery 110, and the so-called dual battery refers to a battery 110 including two cells (also called dual cells), and the two cells in the dual battery are connected in series. For example, when the electronic device 1 is a mobile phone, the voltage of the single-cell battery 110 is 4V. Since the two cells in the dual battery are connected in series, the voltage of the dual cell is 8V. Generally speaking, the system power supply voltage of the electronic device 1 is generally 4V. For a single battery, the current voltage value of the single battery may be the current voltage value. In addition, by Figure 1 It can be seen that when the battery 110 is a single cell, the voltage VBAT of the single cell is also equal to the voltage VPH of the load 113 .

[0167] Therefore, when the battery 110 is a single battery: the current voltage value of the single battery is obtained as the current voltage value, or the current voltage value of the antenna 150 is obtained as the current voltage value, and the current voltage value can more accurately reflect the current voltage value of the battery 110. Therefore, the current voltage value and the current temperature range can be used to more accurately determine the level of power backoff for the RF front-end circuit 151, and the power backoff value corresponding to the working frequency band can be more accurately determined according to the working frequency band and the power backoff level of the antenna 150, and the maximum output power of the RF front-end circuit 151 in the working frequency band can be more accurately limited according to the power backoff value, so that the battery 110 can continue to work when the current voltage value is low and the current temperature is low, and the shutdown process will not be triggered. The battery 110 continues to release energy and can give full play to the energy advantage of the battery 110.

[0168] As can be seen from the previous introduction, the types of batteries 110 in the electronic device 1 may include single batteries and dual batteries. The battery 110 in the electronic device 1 may be a single battery or a dual battery. The so-called single battery refers to a battery 110 with a single cell, and the so-called dual battery refers to a battery 110 including two cells (also called dual cells), and the two cells in the dual battery are connected in series. For example, when the electronic device 1 is a mobile phone, the voltage of the single-cell battery 110 is 4V. Since the two cells in the dual battery are connected in series, the voltage of the dual cell is 8V. Generally speaking, the output voltage VBAT of the single battery of the electronic device 1 is generally 4V. For a single battery, the current voltage value of the single battery can be the current voltage value. In addition, by Figure 1It can be seen that when the battery 110 is a single cell, the voltage VBAT of the single cell is also equal to the voltage VPH of the load 113. For a dual cell, the output voltage VBAT of the dual cell is 8 V. The system power supply voltage of the electronic device 1 is 4 V. Therefore, for the dual-cell battery 110, the power management system 130 obtains the current voltage value of the dual cell as the current voltage value.

[0169] Please also read Figure 4 and Figure 8 , Figure 8 A corresponding relationship table of the voltage, temperature range and corresponding power fallback level of the battery 110 provided in another embodiment. Figure 8 The voltage value of the battery 110 shown in FIG. Figure 4 The voltage values ​​of the battery 110 shown in FIG. 1 are different.

[0170] Regardless of whether the battery 110 of the electronic device 1 is a single battery or a dual battery, Figure 4 and Figure 8 Although the voltage values ​​are different, the core invention points are the same.

[0171] Therefore, when the battery 110 is a dual battery: the current voltage value of the dual battery is obtained as the current voltage value, and the current voltage value can more accurately reflect the current voltage value of the battery 110. Therefore, the current voltage value and the current temperature range can be used to more accurately determine the level of power backoff for the RF front-end circuit 151, and the power backoff value corresponding to the working frequency band can be more accurately determined according to the working frequency band of the antenna 150 and the power backoff level, and the maximum output power of the RF front-end circuit 151 in the working frequency band can be more accurately limited according to the power backoff value, so that the battery 110 can continue to work when the current voltage value is low and the current temperature is low, and the shutdown process will not be triggered. The battery 110 continues to release energy and can give full play to the energy advantage of the battery 110.

[0172] Further, referring to the above drawings about the electronic device 1, the RF front-end circuit 151 includes a transceiver 1511 and a power amplifier 1512. The power amplifier 1512 is electrically connected to the transceiver 1511, and the power amplifier 1512 is also used to be electrically connected to the radiator 152 of the antenna 150. The S150 includes: limiting the maximum output power of the transceiver 1511 in the working frequency band.

[0173] The power amplifier 1512 is used to amplify the power of the transceiver 1511. The power amplifier 1512 has a preset gain, which is generally a fixed value. The power backoff method provided in the embodiment of the present application limits the maximum output power of the transceiver 1511 in the working frequency band according to the power backoff value, so that the battery 110 can continue to work when the current voltage value is low and the current temperature is low, and the shutdown process will not be triggered. The battery 110 continues to release energy, and the energy advantage of the battery 110 can be brought into play. In addition, by limiting the maximum output power of the transceiver 1511 in the working frequency band according to the power backoff value, the battery life of the battery 110 in the electronic device 1 can be extended.

[0174] In addition, the present application also provides a storage medium. The storage medium stores a computer program, and when the computer program is executed, it is used to implement the power backoff method provided in any of the above embodiments.

[0175] The storage medium may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (which may include compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.

[0176] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also regarded as the scope of protection of the present application.

Claims

1. An electronic device, characterized in that: The electronic device comprises: Battery; A temperature sensor, wherein the temperature sensor is used to detect a current temperature value of the electronic device; a power management system, the power management system being electrically connected to the battery and configured to obtain a current voltage value of the battery, the power management system being also electrically connected to the temperature sensor and configured to obtain a current temperature value of the electronic device and determine a current temperature interval to which the current temperature value belongs; and An antenna, the antenna comprising a radio frequency front-end circuit and a radiator, the radio frequency front-end circuit being electrically connected to the power management system, the radio frequency front-end circuit being also electrically connected to the radiator, wherein the battery is used to be electrically connected to the radio frequency front-end circuit; Wherein, when the current voltage value is greater than the target voltage, the maximum power of the RF front-end circuit in the working frequency band is the first power, and the power management system is used for when the current voltage value is less than or equal to the target voltage: Determine a power backoff level for power backoff of the RF front-end circuit according to the current voltage value and the current temperature range, determine a power backoff value corresponding to the working frequency band according to the working frequency band of the antenna and the power backoff level, and limit the maximum output power of the RF front-end circuit in the working frequency band according to the power backoff value so that the maximum power of the RF front-end circuit is a second power, wherein the second power is less than the first power.

2. The electronic device according to claim 1, wherein: When the batteries have the same voltage value: the power fallback level corresponding to the first temperature range of the electronic device is the first level, and the power fallback level corresponding to the second temperature range of the electronic device is the second level, wherein the temperature in the first temperature range is greater than the temperature in the second temperature range, and the second level is greater than or equal to the first level; When the antennas are in the same operating frequency band: the first level corresponds to a first power backoff value, and the second level corresponds to a second power backoff value, wherein the second power backoff value is greater than or equal to the first power backoff value.

3. The electronic device according to claim 2, characterized in that: The backoff level of the electronic device when in the first working frequency band is a preset level, wherein the preset level of the first working frequency band corresponds to a first preset power backoff value; The backoff level of the electronic device when it is in the second working frequency band is a preset level, wherein the preset level of the second working frequency band corresponds to a second preset power backoff value, wherein the power consumption of the first working frequency band is less than the power consumption of the second working frequency band, and the second preset power backoff value is greater than the first preset power backoff value.

4. The electronic device according to claim 1, wherein: When the voltage of the battery is less than or equal to a preset voltage threshold, the power management system obtains the current voltage value of the battery.

5. The electronic device according to claim 1, wherein: The radio frequency front end circuit comprises: a transceiver electrically connected to the power management system; and A power amplifier, the power amplifier being electrically connected to the transceiver and the radiator, respectively, and the power amplifier having a preset gain; The power management system is used to limit the maximum output power of the transceiver in the working frequency band according to the power back-off value.

6. The electronic device according to claim 1, wherein: The battery is directly electrically connected to the power amplifier; Alternatively, the electronic device comprises a DC converter, and the battery is electrically connected to the power amplifier via the DC converter.

7. The electronic device according to claim 6, characterized in that: The battery is a single battery, and the power management system obtains a current voltage value of the single battery as the current voltage value, or the power management system obtains a current voltage value of the antenna as the current voltage value.

8. The electronic device according to claim 6, characterized in that: When the battery is a dual battery, the power management system obtains a current voltage value of the dual battery as the current voltage value.

9. The electronic device according to claim 8, characterized in that: The battery is used to output a first voltage, and the electronic device further includes: a half-voltage chip, the half-voltage chip being electrically connected to the battery and configured to obtain a second voltage according to the first voltage, wherein a voltage value of the second voltage is half of a voltage value of the first voltage; The half-voltage chip is electrically connected to the power amplifier, or the electronic device further includes a DC converter, and the half-voltage chip is electrically connected to the power amplifier through the DC converter.

10. The electronic device according to claim 1, wherein: The electronic device further comprises a DC converter, the DC converter being electrically connected to the battery; The RF front-end circuit includes a transceiver, a first power amplifier and a second power amplifier, the transceiver is electrically connected to the power management system, the first power amplifier is electrically connected to the transceiver and the DC converter, and the second power amplifier is electrically connected to the transceiver and the battery; The radiator includes a first radiation branch and a second radiation branch. The first radiation branch is electrically connected to the first power amplifier, and the second radiation branch is electrically connected to the second power amplifier.

11. The electronic device according to claim 1, wherein: The battery is used to output a first voltage. The electronic device further includes a half-voltage chip and a DC converter. The half-voltage chip is electrically connected to the battery and is used to obtain a second voltage according to the first voltage, wherein the voltage value of the second voltage is half of the voltage value of the first voltage. The DC converter is electrically connected to the half-voltage chip. The RF front-end circuit includes a transceiver, a first power amplifier and a second power amplifier, the transceiver is electrically connected to the power management system, the first power amplifier is electrically connected to the transceiver and the DC converter, the second power amplifier is electrically connected to the transceiver and is electrically connected to the half-voltage chip; The radiator includes a first radiation branch and a second radiation branch. The first radiation branch is electrically connected to the first power amplifier, and the second radiation branch is electrically connected to the second power amplifier.

12. A method for power back-off of radio frequency signals, applied to electronic equipment, characterized in that: The electronic device includes a battery and an antenna, the antenna includes a radio frequency front-end circuit, and the power back-off method includes: Acquire a current voltage value of the battery, and when the current voltage is greater than a target voltage, the maximum power of the RF front-end circuit in the working frequency band is a first power; Obtaining a current temperature value of the electronic device and determining a current temperature range to which the current temperature value belongs; When the current voltage value is less than or equal to the target voltage, determining a power backoff level for performing power backoff on the RF front-end circuit according to the current voltage value and the current temperature range; Determine a power backoff value corresponding to the working frequency band according to the working frequency band and the power backoff level of the antenna; and The maximum output power of the RF front-end circuit in the working frequency band is limited according to the power back-off value so that the maximum power of the RF front-end circuit is a second power, wherein the second power is less than the first power.

13. The power backoff method according to claim 12, characterized in that: The determining, according to the current voltage value and the current temperature range, a power backoff level for performing power backoff on the RF front-end circuit includes: When the batteries have the same voltage value: the power fallback level corresponding to the first temperature range of the electronic device is the first level, and the power fallback level corresponding to the second temperature range of the electronic device is the second level, wherein the temperature in the first temperature range is greater than the temperature in the second temperature range, and the second level is greater than or equal to the first level; The determining, according to the working frequency band and the power backoff level of the antenna, a power backoff value corresponding to the working frequency band includes: When the antennas are in the same operating frequency band: the first level corresponds to a first power backoff value, and the second level corresponds to a second power backoff value, wherein the second power backoff value is greater than or equal to the first power backoff value.

14. The power back-off method according to claim 13, characterized in that: The step of determining the power backoff value corresponding to the working frequency band according to the working frequency band and the power backoff level of the antenna also includes: The backoff level of the electronic device when in the first working frequency band is a preset level, wherein the preset level of the first working frequency band corresponds to a first preset power backoff value; The backoff level of the electronic device when it is in the second working frequency band is a preset level, wherein the preset level of the second working frequency band corresponds to a second preset power backoff value, wherein the power consumption of the first working frequency band is less than the power consumption of the second working frequency band, and the second preset power backoff value is greater than the first preset power backoff value.

15. The power back-off method according to claim 12, characterized in that: When the battery is a single battery, the obtaining of the current voltage value of the battery includes: obtaining the current voltage value of the single battery as the current voltage value, or obtaining the current voltage value of the antenna as the current voltage value; When the battery is a dual battery, the obtaining of the current voltage value of the battery includes: obtaining the current voltage value of the dual battery as the current voltage value.

16. The power back-off method according to claim 12, characterized in that: The RF front-end circuit includes a transceiver and a power amplifier, wherein the power amplifier is electrically connected to the transceiver and is also used to be electrically connected to a radiator of an antenna; The limiting the maximum output power of the RF front-end circuit in the working frequency band according to the power back-off value includes: The maximum output power of the transceiver in the working frequency band is limited.

17. A storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed, it is used to implement the method according to any one of claims 12 to 16.

Images