CN116774092B - Battery detection method, circuit, device, chip and readable storage medium - Google Patents

Abstract

The application relates to the technical field of battery detection and discloses a battery detection method, a circuit, equipment, a chip and a readable storage medium. The method is applied to an electronic device, the electronic device comprising a plurality of batteries, the method comprising: the electronic equipment detects a plurality of currents corresponding to the batteries respectively, if the currents are larger than a current threshold value, the batteries are determined to be in charge and discharge circuits of the batteries, namely the batteries can be charged and discharged normally, and the electronic equipment can be started. If the current of any one of the batteries is smaller than the current threshold, the battery is not in the charge-discharge circuit of the battery, and cannot be charged and discharged normally, and the battery is dead, so that the electronic equipment cannot be started. The method can improve the accuracy of the detection result of the battery, avoid the phenomena of blocking, screen display and the like of the electronic equipment caused by starting the electronic equipment under the condition that the electronic equipment contains dead batteries, and improve the use experience of users.

Description

Battery detection method, circuit, device, chip and readable storage medium

Technical Field

The present application relates to the technical field of battery detection, and in particular to a battery detection method, circuit, device, chip and readable storage medium.

Background technique

At present, with the continuous development of electronic devices such as mobile phones, multiple batteries can be contained inside the electronic devices. Multiple batteries are connected in parallel to power the electronic devices, which can increase the total capacity of the electronic devices and improve the performance of the electronic devices.

For example, an electronic device contains two batteries connected in parallel. Before the electronic device is turned on, it usually detects the voltage of the two batteries inside. If one battery becomes a dead battery, that is, it cannot be charged or discharged, under normal circumstances, the voltage cannot be detected at both ends of the dead battery. However, there is usually a balancing circuit between the two parallel batteries. The balancing circuit can allow the voltage of another normal battery to leak to both ends of the dead battery through the balancing circuit. The electronic device can then detect the voltage at both ends of the dead battery, and mistakenly judge the dead battery as a normal battery based on the voltage, and then turn on the device.

After an electronic device is turned on, only normal batteries can discharge. The discharge current of a single battery is small, which makes it unable to support the energy consumption requirements of the electronic device, causing abnormal phenomena such as freezing and screen noise in the electronic device.

Summary of the invention

To solve the above problems, the embodiments of the present application provide a battery detection method, circuit, device, chip and readable storage medium. The method determines that multiple batteries can be charged and discharged normally when multiple currents corresponding to multiple batteries included in the electronic device are greater than the current threshold, and performs a power-on startup operation on the electronic device, which can avoid the phenomenon of electronic device freezing and screen distortion caused by starting the electronic device when the electronic device contains a dead battery, thereby improving the user experience.

In a first aspect, the present application provides a battery detection method, which is applied to an electronic device, and the electronic device includes multiple batteries. The method includes: detecting that the electronic device is in a triggered start-up state; obtaining multiple first currents corresponding to the multiple batteries included in the electronic device; corresponding to the multiple first currents being greater than a current threshold, determining that the multiple batteries are in the charging and discharging circuits of the respective batteries, and performing a power-on operation on the electronic device.

In the present application, the condition that the electronic device is in a triggered start state may be that the power button of the electronic device is in an on or pressed state. For example, if the electronic device detects that the power button of the electronic device is in a pressed state, and the operation continues for a certain period of time, it can be determined that the electronic device is in a triggered start state. Then, the electronic device obtains multiple first currents corresponding to the multiple batteries respectively. The electronic device may obtain the multiple first currents based on a power meter.

If the multiple first currents are all greater than the current threshold, it can be determined that the multiple batteries are in the charging and discharging circuits of the respective batteries, that is, the multiple batteries can be charged and discharged normally, and the electronic device can be started normally.

The method determines whether the multiple batteries included in the electronic device are batteries that can be charged and discharged normally by detecting the current of the multiple batteries included in the electronic device. If so, the electronic device is turned on, which can ensure the smoothness of use of the electronic device and avoid the phenomenon of the electronic device being stuck or having a distorted screen caused by turning on the electronic device when the electronic device contains batteries that cannot be charged and discharged normally (dead batteries), thereby improving the user experience.

In a possible implementation of the first aspect above, the current threshold is determined based on a deviation value of the zero current, wherein the deviation value of the zero current is obtained by sampling the zero current multiple times.

The deviation value can also be understood as an error value, and the current threshold value can be the same as the deviation value of zero current, or slightly larger than the deviation value of zero current. For example, if the deviation value of the current is 10mA after multiple current sampling, then the current threshold value can be 10mA, or slightly larger than 10mA, such as 15mA.

In a possible implementation of the first aspect, the manner of determining the first current corresponding to any battery among the multiple batteries includes but is not limited to the following three:

Method 1: sampling the current corresponding to any battery among the multiple batteries for multiple times at fixed time intervals to obtain multiple second currents; and taking the average value of the multiple second currents as the first current corresponding to any battery.

Method 2: sampling the current corresponding to any battery among the multiple batteries for multiple times at fixed time intervals to obtain multiple second currents; and using the multiple second currents as the first current corresponding to any battery.

Method three: sampling the current corresponding to any battery among the multiple batteries for multiple times at fixed time intervals to obtain multiple second currents; and taking the average value of the multiple second currents excluding the maximum and minimum currents as the first current corresponding to any battery.

The current corresponding to any battery may be sampled by the fuel gauge obtaining the voltage of a resistor connected in series with any battery, and then determining the current of the resistor and the current of any battery based on the voltage and the resistance value of the resistor.

In a possible implementation of the first aspect above, obtaining multiple first currents respectively corresponding to multiple batteries included in the electronic device includes: for any battery among the multiple batteries, obtaining a first voltage of a resistor corresponding to any battery, wherein the resistor corresponding to any battery and any battery are connected in series in a charging and discharging circuit of any battery; determining a second current corresponding to the resistor corresponding to any battery based on the first voltage and the resistance value of the resistor corresponding to any battery; and determining the first current corresponding to any battery based on the second current.

It can be understood that, as shown in the circuit of FIG. 2A below, the electronic device can obtain multiple first currents by determining the current of the battery based on the current-sensing resistor connected in series with the battery. Taking the battery 1 and the current-sensing resistor 1 in FIG. 2A as an example, the electronic device can obtain the first voltage of the current-sensing resistor 1, and then determine the second current of the current-sensing resistor 1 based on the first voltage and the resistance value of the current-sensing resistor 1. Because the battery 1 and the current-sensing resistor 1 are connected in series, the currents of the battery 1 and the current-sensing resistor 1 are the same, so the magnitude of the first current corresponding to the battery 1 can be determined.

In a possible implementation of the first aspect above, the method further includes: corresponding to any first current among the multiple first currents being less than a current threshold, determining that a battery corresponding to any first current is not in a battery charging and discharging circuit, and not performing a power-on operation on the electronic device.

If any first current among multiple first currents is less than the current threshold, it means that the battery corresponding to any first current is not in the battery charging and discharging circuit, that is, the battery cannot perform normal charging and discharging operations and is a dead battery. At this time, the electronic device cannot be turned on to avoid the situation where the remaining batteries that can be charged and discharged normally cannot support the power consumption of the electronic device after the electronic device is turned on, causing the electronic device to freeze.

In a possible implementation of the first aspect above, the electronic device includes a balancing circuit, a detection module, a battery module and a resistor module, the detection module includes a first fuel gauge and a second fuel gauge, the battery module includes a first battery and a second battery, and the resistor module includes a first resistor and a second resistor; the output end of the first battery is connected to one end of the balancing circuit, and the output end of the second battery is connected to the other end of the balancing circuit; the input end of the first battery is connected to one end of the first resistor, and the other end of the first resistor is grounded; the input end of the second battery is connected to one end of the second resistor, and the other end of the second resistor is grounded; the first fuel gauge includes a first end, a second end, a third end and a fourth end, the first end is connected to the output end of the first battery, the second end is connected to one end of the first resistor, and the third end and the fourth end are both connected to the other end of the first resistor; the second fuel gauge includes a fifth end, a sixth end, a seventh end and an eighth end, the fifth end is connected to the output end of the second battery, the sixth end is connected to one end of the second resistor, and the seventh end and the eighth end are both connected to the other end of the second resistor.

The schematic diagram of this circuit structure can be found in FIG2A mentioned later. It can be understood that the first battery refers to battery 1 in the following text, the second battery refers to battery 2 in the following text, the first resistor refers to current-sensing resistor 1 in the following text, and the second resistor refers to current-sensing resistor 2 in the following text.

In the second aspect, the present application provides a battery detection circuit, which includes a detection module, a battery module, a resistor module and a control module, wherein the battery module includes multiple batteries, the resistor module includes multiple resistors, and each resistor is respectively connected to a corresponding battery; the detection module is used to detect multiple voltages corresponding to multiple resistors in the resistor module when the electronic device is in a triggered start-up state; the control module is used to determine a first current of each battery connected in series with each resistor based on the voltage corresponding to each resistor and the resistance value of each resistor; when the first current corresponding to each battery is greater than a current threshold, it is determined that each battery is in a charging and discharging circuit of each battery, and the electronic device is powered on.

It can be understood that the detection module may include the first electricity meter and the second electricity meter mentioned in the first aspect above, that is, the electronic device obtains multiple voltages corresponding to multiple resistors in the resistance module through the first electricity meter and the second electricity meter.

In a possible implementation of the second aspect above, the control module is further used to determine that any battery is not in a charging and discharging circuit of any battery, corresponding to the first current of any battery among the first currents of each battery being less than a current threshold, and not perform a power-on operation on the electronic device.

In a third aspect, the present application provides an electronic device, which includes the battery detection circuit mentioned above.

In a fourth aspect, the present application provides an electronic device, comprising: one or more processors; one or more memories; one or more memories storing one or more programs, and when the one or more programs are executed by one or more processors, the electronic device executes the first aspect and any possible battery detection method of the first aspect.

In a fifth aspect, the present application provides a chip, which is used to execute the first aspect and any possible battery detection method of the first aspect.

In a sixth aspect, the present application further provides a computer-readable storage medium, on which instructions are stored, and when the instructions are executed on a computer, the computer executes the first aspect and any possible battery detection method of the first aspect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1A is a schematic diagram showing an internal structure of a battery according to some embodiments of the present application;

FIG1B shows a schematic diagram of a circuit structure between two batteries included in an electronic device according to some embodiments of the present application;

FIG2A is a schematic diagram showing a circuit structure corresponding to a battery detection method according to some embodiments of the present application;

FIG2B is a schematic diagram showing a circuit structure corresponding to another battery detection method according to some embodiments of the present application;

FIG2C shows a schematic diagram of a circuit structure showing an open circuit state of a battery 1 according to some embodiments of the present application;

FIG2D is a schematic diagram showing different positions of a current sensing resistor in a circuit according to some embodiments of the present application;

FIG3 is a schematic diagram showing a flow chart of a battery detection method according to some embodiments of the present application;

FIG4 shows a determination flow chart of a battery detection method according to some embodiments of the present application;

FIG5 shows a schematic structural diagram of an electronic device according to some embodiments of the present application.

Implementation

Illustrative embodiments of the present application include, but are not limited to, battery detection methods, circuits, devices, chips, and readable storage media.

The following is an explanation of the terms used in the embodiments of the present application.

Battery: Usually consists of a battery protection board and battery cells, where the battery protection board and battery cells are connected through board-to-board connectors (BTB).

Dead battery: A battery that cannot be charged or discharged when the battery power is below a certain threshold. For example, when the battery power in an electronic device reaches a certain threshold, the electronic device automatically shuts down. If the battery power is not charged for a long time, the battery power continues to decrease. When it decreases to a certain threshold, the battery protection board in the battery will disconnect the battery cell from the charging and discharging circuit to prevent the battery from over-discharging and causing performance degradation. At this point, the battery becomes a dead battery.

Fuel gauge: A device used to monitor the battery charge. It can obtain the battery charge by measuring the battery voltage and current.

Metal Oxide Semiconductor Field Effect Transistor (MOS): Also known as insulated gate field effect transistor, MOS is usually used in amplifier circuits or switch circuits in general electronic circuits. MOS includes source S, gate G and drain D, and is divided into two categories: P-channel enhancement MOS (PMOS) and N-channel enhancement MOS (NMOS). In the protection circuit included in the battery protection board of the battery, NMOS is usually used to disconnect the battery's charge and discharge circuit, that is, the battery is turned into a dead battery by disconnecting the NMOS.

The following is an introduction to the background of the battery detection method provided in the embodiment of the present application.

At present, multiple batteries can be installed inside electronic devices. Compared with a single battery, multiple batteries can store more electricity. During the use of electronic devices, multiple batteries discharge at the same time, and the discharge amount is greater than that of a single battery. It can also support the consumption of high-power applications in electronic devices, making the display and use of electronic devices smoother.

Taking the discharge process of a battery as an example, it is understandable that during the discharge process, the amount of electricity (for example, reflected in the voltage) of the battery will gradually decrease. Taking the battery's upper charging limit voltage as V1 and the shutdown voltage as V2 as an example, the battery's voltage will gradually decrease from V1 to V2 during the discharge process, and then the electronic device will automatically shut down to prevent the battery from continuing to discharge in large quantities and causing over-discharge. It is understandable that for electronic devices containing multiple batteries, as long as the voltage of any battery reaches the shutdown voltage, the electronic device will automatically shut down.

After the electronic device automatically shuts down, it still needs a small amount of power to maintain the alarm clock, time system, etc. Therefore, after shutting down, the battery power of the electronic device will continue to decrease, that is, the battery voltage continues to decrease. When the battery voltage drops to a certain threshold, in order to prevent the battery from continuing to discharge and having a significant impact on the battery performance, the battery will be completely disconnected from the charge and discharge circuit and can no longer be charged and discharged. At this time, the battery becomes a dead battery, which means that even if the battery is charged, the battery power will not increase, and the battery cannot be discharged to the outside for use by the system.

Among them, the operation of disconnecting the battery from the charging and discharging circuit is performed by the battery protection board inside the battery. As shown in Figure 1A, the battery 100 generally includes a battery cell 101 and a battery protection board 102, and the battery protection board 102 and the battery cell 101 are connected through a board-to-board connector (BTB). The battery protection board 102 generally includes a protection circuit (Integrated Circuit, IC), a metal oxide semiconductor field effect transistor (Metal Oxide SemiconductorField Effect Transistor, MOS tube) and resistors and other devices.

The protection circuit in the battery protection board can monitor the charging and discharging status of the battery. For example, when the battery is discharging, the protection circuit can disconnect the battery's discharge circuit if the battery cell voltage is too low to prevent damage to the battery due to over-discharge. For another example, when the battery is charging, the protection circuit can detect the battery cell voltage. If the battery cell voltage reaches the full-charge voltage of the battery, the protection circuit will disconnect the battery's charging circuit to prevent damage to the battery due to over-charging.

In an embodiment of the present application, after the electronic device is turned off, if the electronic device has not been charged for a long time and the protection IC inside the battery detects that the voltage of the battery cell has decreased to a certain threshold, the protection IC will disconnect the charging and discharging circuit of the battery cell, and the battery will no longer be able to charge and discharge, becoming a dead battery that cannot be charged or discharged.

Taking an electronic device including two batteries as an example, Figure 1B shows a schematic diagram of a circuit structure between two batteries included in an electronic device. The circuit in Figure 1B includes a battery cell 1, a protection circuit (IC), a resistor R1, a resistor R2, a MOS1, a MOS2, and a battery 2.

Among them, the battery cell 1, the protection IC, the resistor R1, the MOS1 and the MOS2 together constitute the battery 1, and the battery 2 is connected in parallel with the battery 1. It can be understood that the battery 2 also contains the corresponding battery cell, the protection IC and the MOS tube, and the battery 1 and the battery 2 are placed in parallel in the electronic device. This application only takes the battery 1 as an example to describe the working principle of the protection circuit, so the devices contained in the battery 2 and the corresponding circuit structure are not shown in Figure 1B. It can be understood that the working principle of the protection circuit inside the battery 2 is similar to the working principle of the protection circuit inside the battery 1, and will not be repeated here.

As shown in FIG1B , for battery 1 , the protection IC is connected in series with resistor 1 , MOS1 and MOS2 and then connected in parallel with cell 1 , and the protection IC is connected to the gates of MOS1 and MOS2 , one of the two ends of MOS1 except the gate is connected to one end of MOS2 , and the other end is connected to the input end of cell 1 .

The protection IC detects the voltage of the battery cell 1, that is, after the protection IC receives the input voltage Vin of the battery cell 1 after voltage division by the resistor R1, if the voltage of the battery cell 1 is lower than a certain threshold, the protection IC applies voltage to the gates of MOS1 and MOS2 to control MOS1 and MOS2 to turn off, so that the battery cell 1 is disconnected from the charge and discharge circuit, and the battery 1 cannot continue to charge and discharge. Among them, MOS1 and MOS2 are MOS tubes placed in reverse, for example, the source of MOS1 is connected to the source of MOS2, or the drain of MOS1 is connected to the drain of MOS2. This placement method can achieve complete shutdown of the MOS tube.

Exemplarily, MOS1 and MOS2 are usually NMOS tubes, and the working characteristics of the NMOS tube are that when the voltage Vgs between the gate G and the source S is greater than the voltage threshold, the NMOS tube is turned on; when Vgs is less than the voltage threshold, the NMOS tube is turned off. Therefore, in the embodiment of the present application, if the voltage of the battery cell 1 is lower than a certain threshold, the protection IC can apply a voltage to the gates of MOS1 and MOS2, and the applied voltage must be less than the voltage threshold so that both MOS1 and MOS2 are turned off.

According to the above content, since the protection IC disconnects MOS1 and MOS2, battery 1 cannot continue to charge and discharge, so battery 1 becomes a dead battery.

The battery detection methods involved in some embodiments are explained below.

For the above situation, in some embodiments, after the electronic device detects that the electronic device is in a triggered start-up state, it will determine whether the battery is a dead battery by detecting the battery voltage, and further determine whether it can be normally started. The triggered start-up state of the electronic device can be achieved by the user by pressing the power button of the electronic device.

Taking the electronic device including two batteries, battery 1 and battery 2, as an example, the electronic device will detect the voltages at both ends of battery 1 and battery 2 respectively. It can be understood that the voltage of a dead battery is usually 0V, that is, there is no voltage at both ends of the dead battery. If battery 1 is a dead battery and battery 2 is a normal battery, then under normal circumstances, the voltage at both ends of battery 1 detected by the electronic device should be 0V. However, a balancing circuit is usually placed between battery 1 and battery 2, and the balancing circuit can balance the voltages of the two batteries. Therefore, the balancing circuit will cause the output voltage of battery 2 to leak to the output end of battery 1. Because the input ends of battery 1 and battery 2 are both grounded, the voltage of battery 1 detected by the electronic device at this time is the voltage difference between the output voltage of battery 2 and the input voltage of battery 1, that is, the detected voltage of battery 1 is not 0V, and the electronic device mistakenly judges battery 1 as a normal battery, and then performs the power-on operation.

After the electronic device is turned on, only battery 2 is discharged for use by various applications inside the electronic device. However, the discharge current of a single battery is small and may not be able to support the energy consumption requirements of the electronic device, which may cause the electronic device to freeze or display abnormalities, affecting the user experience.

In order to solve the above problems, an embodiment of the present application provides a battery detection method, in which an electronic device detects the current of each battery in a plurality of batteries contained in the electronic device in a trigger start state. If the current of each battery is greater than the current threshold, it can be determined that the plurality of batteries are in the charge and discharge circuit of each battery, that is, the plurality of batteries are normal batteries, and the electronic device can be turned on and started. If the current of any of the plurality of batteries is less than the current threshold, it means that the battery is not in the charge and discharge circuit, that is, the battery is a dead battery, and the power-on and start-up operation of the electronic device cannot be performed at this time. It can be understood that the equalization circuit between the parallel batteries will affect the detection of the battery voltage, but will not affect the detection of the battery current. Therefore, the method determines whether the battery is a dead battery by detecting the battery current, and then determines whether the power-on operation of the electronic device can be performed, thereby improving the accuracy of the battery detection result, avoiding the jamming and screen distortion of the electronic device caused by turning on the electronic device when the electronic device contains a dead battery, and improving the user experience.

The reason why the equalization circuit does not affect the current detection and the method of determining whether the battery is a dead battery based on the current are described in detail below in combination with the circuit structure.

FIG2A shows a schematic diagram of the structure of the circuit to which the battery detection method provided in the embodiment of the present application is applied. The circuit shown in FIG2A includes a detection module, a battery module, a resistor module and a control module. The battery module includes a plurality of batteries, the resistor module includes a plurality of resistors, and each resistor is connected in series with each corresponding battery.

The detection module is used to detect multiple voltages corresponding to multiple resistors in the resistance module when the electronic device is in a triggered start state.

The control module is used to determine the first current of each battery connected in series with each resistor based on the voltage corresponding to each resistor and the resistance value of each resistor; it is also used to determine that each battery is in the charging and discharging circuit of each battery in response to the first current of each battery being greater than the current threshold, and to perform a power-on operation on the electronic device.

Specifically, the circuit to which the battery detection method provided in the embodiment of the present application is applied may also include a balancing circuit, a system, and a power management integrated circuit (Power Management Integrated Circuit, PMIC).

Taking the detection module including fuel meter 1 and fuel meter 2, the battery module including battery 1 and battery 2, and the resistance module including current sensing resistor 1 and current sensing resistor 2 as an example, the circuit structure shown in FIG. 2A can be further expressed as the circuit structure shown in FIG. 2B.

Among them, PMIC is an integrated circuit chip used to manage and control various aspects of the power system. It can monitor, adjust and protect battery voltage, current and power to ensure the normal operation of electronic equipment, and can also save energy and extend battery life. The system in Figure 2B can refer to the system of an electronic device, which contains multiple power-consuming modules, applications, etc. It can be understood that the discharge of battery 1 and battery 2 is managed and controlled by PMIC and then used by the system.

The equalizing circuit is placed between the output terminals of battery 1 and battery 2, and plays the role of equalizing the voltages of battery 1 and battery 2. Battery 1 and battery 2 are connected in parallel, and the input terminal of battery 1 is connected to one end of current-sensing resistor 1, and the other end of current-sensing resistor 1 is grounded; the input terminal of battery 2 is connected to one end of current-sensing resistor 2, and the other end of current-sensing resistor 2 is grounded. In addition, the fuel gauge 1 is connected to both ends of current-sensing resistor 1 and point A at the output terminal of battery 1 and point B at the other end of current-sensing resistor 1, respectively. Similarly, the fuel gauge 2 is connected to both ends of current-sensing resistor 2 and point C at the output terminal of battery 2 and point D at the other end of current-sensing resistor 2, respectively.

Among them, taking the fuel meter 1 as an example, the working principle of the fuel meter 1 is that the fuel meter 1 can obtain the first voltage of the current-sensing resistor 1 by being connected to the two ends of the current-sensing resistor 1, and the second voltage of the voltage of the battery 1 and the current-sensing resistor 1 can be obtained by detecting the voltages at points A and B. The difference between the second voltage and the first voltage is the voltage across the battery 1. When the first voltage and the resistance of the current-sensing resistor 1 are known, the current of the current-sensing resistor 1 can be obtained. Because the battery 1 and the current-sensing resistor 1 are connected in series, the current of the battery 1 is the same as the current of the current-sensing resistor 1. At this time, the voltage across the battery 1 and the current of the battery 1 are known, so the power of the battery 1 can be further calculated based on the voltage and current.

It can be understood that the working principle of the fuel meter 2 is similar to that of the fuel meter 1 and will not be described in detail here.

For example, if both battery 1 and battery 2 are normal batteries, after the electronic device is in the trigger start state, the balancing circuit is turned on, and under the action of the balancing circuit, the circuit shown in FIG. 2B is turned on, and current flows through both battery 1 and battery 2. At this time, the fuel gauge can detect the voltage and current of battery 1 and the voltage and current of battery 2 according to the above method.

For example, battery 1 is a dead battery and battery 2 is a normal battery. After the electronic device is in the trigger start state, the balancing circuit is turned on. Because battery 1 is a dead battery, battery 1 cannot be charged or discharged, and there is no voltage or current at both ends of battery 1, which is equivalent to battery 1 being disconnected from the circuit shown in Figure 2B. However, under the action of the balancing circuit, the voltage at the output end of battery 2 will be output to the output end of battery 1 through the balancing circuit, resulting in voltage at point A. Therefore, if only the voltage is detected to confirm whether battery 1 is a dead battery, battery 1 will be mistakenly considered to be a normal battery based on the voltages detected at points A and B, and then the electronic device will be turned on.

However, when battery 1 is a dead battery, no current flows through battery 1, as shown in FIG2C , that is, there is an open circuit between battery 1 and current-sensing resistor 1. In this case, the fuel gauge 1 detects that the voltage across current-sensing resistor 1 is 0 volts (V), so the current of current-sensing resistor 1 is also 0 amperes (A). At this time, it can be determined that no current flows through battery 1, and it can be determined that battery 1 is disconnected from the circuit, that is, battery 1 is a dead battery.

Therefore, it can be seen from the above content that in the circuit structure shown in Figures 2B and 2C, if only the voltage across battery 1 and battery 2 is detected to determine whether the battery is a dead battery, due to the action of the balancing circuit, this judgment method will mistakenly judge the dead battery as a normal battery, and then the electronic device will turn on. If the current of battery 1 and battery 2 is detected to determine whether the battery is a dead battery, the balancing circuit will not affect the accuracy of the judgment result. Therefore, the method of judging whether a battery is a dead battery by the current of the battery provided in the embodiment of the present application can improve the accuracy of the detection result, thereby improving the user experience of the electronic device.

In the above-mentioned Figures 2B and 2C, the current-sensing resistor 1 is connected to the input end of the battery 1, and the current-sensing resistor 2 is connected to the input end of the battery 2. In some embodiments, as shown in Figure 2D, the current-sensing resistors can also be placed at the output ends of the batteries, that is, the current-sensing resistor 1 is connected to the output end of the battery 1, and the current-sensing resistor 2 is connected to the output end of the battery 2. Regardless of the position of the current-sensing resistor, as long as the battery is a dead battery, no current flows through the current-sensing resistor connected in series with the battery, so it is still possible to determine whether the battery is a dead battery based on the current of the current-sensing resistor (that is, the current of the battery connected in series with the current-sensing resistor) and the battery detection method provided in the embodiment of the present application.

It should be understood that the battery detection method provided in the embodiments of the present application can be applied to any electronic device including multiple batteries, including but not limited to mobile phones, tablet computers, computers, wearable devices, augmented reality (AR) devices, and any other electronic devices. The embodiments of the present application do not limit the type and form of the electronic device.

The following is a detailed description of the battery detection method provided in the embodiment of the present application. The method can be performed by an electronic device. Taking the electronic device including battery 1 and battery 2 as an example, as shown in FIG3 , the method can include the following steps:

301: The electronic device detects that the electronic device is in a trigger start state.

The embodiment of the present application does not limit the conditions for the electronic device to be in the triggered start state. For example, the electronic device can determine that the electronic device is currently in the triggered start state by detecting that the power button of the electronic device is turned on or pressed. Taking the electronic device as a mobile phone as an example, in this case, it can be understood that the user presses the power button of the mobile phone, and after the operation continues for a certain period of time, the electronic device is in the triggered start state. Then, the electronic device needs to perform subsequent steps 302 and 303 to determine whether to continue the power-on operation.

302: The electronic device obtains first currents corresponding to battery 1 and battery 2 respectively.

The embodiments of the present application do not limit the manner in which the electronic device obtains the first currents corresponding to battery 1 and battery 2, respectively. Exemplarily, the electronic device may use a fuel meter to obtain the first currents corresponding to battery 1 and battery 2, respectively. Specifically, fuel meter 1 is used to detect the first current corresponding to battery 1, and fuel meter 2 is used to detect the first current corresponding to battery 2. Taking fuel meter 1 detecting the first current corresponding to battery 1 as an example, fuel meter 1 can obtain the current of the current-sensing resistor by detecting the voltage across the current-sensing resistor connected in series with battery 1. Because the current-sensing resistor is connected in series with battery 1, the first current corresponding to battery 1 is the same as the current of the current-sensing resistor. The manner in which the first current corresponding to battery 2 is obtained is similar to the manner in which the first current corresponding to battery 1 is obtained, and will not be repeated here.

303: If the first currents corresponding to battery 1 and battery 2 are both greater than the current threshold, it is determined that battery 1 and battery 2 are not dead batteries, and the electronic device performs a power-on operation.

It can be understood that if the battery is a dead battery, the battery cannot be charged or discharged, that is, the current of the battery is a deviation value of 0 ampere (A). The deviation value can also be understood as an error value, which can be obtained by sampling the current multiple times.

In the embodiment of the present application, when the first currents corresponding to battery 1 and battery 2 are both greater than the current threshold, the electronic device performs a power-on operation, that is, at this time, it can be determined that battery 1 and battery 2 are not dead batteries, so the power-on operation can be performed. Therefore, it can be understood that the current threshold in the embodiment of the present application can be a deviation value of 0 current. For example, if the deviation value of the current is 10mA after multiple sampling of the current, then the current threshold can be 10mA. Taking the current threshold of 10mA as an example, if the first currents corresponding to battery 1 and battery 2 are both greater than 10mA, then battery 1 and battery 2 are not dead batteries, and the electronic device can perform a power-on operation; if at least one of the first currents corresponding to battery 1 and battery 2 is less than 10mA, it can be determined that there are dead batteries in battery 1 and battery 2. At this time, in order to avoid the discharge of the battery after the electronic device is turned on, which is insufficient to support the consumption of the electronic device, and causing the phenomenon of the electronic device being stuck, the electronic device does not perform a power-on operation.

In the embodiment of the present application, the current threshold value may be selected to be the same as the deviation value of 0 current, or slightly larger than the deviation value of 0 current. For example, if the deviation value of the current is 10mA, the current threshold value may be determined to be 15mA. In this case, when the first currents corresponding to battery 1 and battery 2 are respectively larger than the current threshold value of 15mA, the electronic device performs a power-on operation. The current threshold value is selected to be slightly larger than the deviation value, which can make the judgment result of the dead battery more accurate.

FIG4 is a logic judgment diagram of the battery detection method provided in an embodiment of the present application. In FIG4, taking the electronic device as a mobile phone as an example, if the mobile phone is in the startup state, that is, corresponding to the trigger startup state mentioned above, the mobile phone needs to obtain the current detected by the fuel gauge 1 and the fuel gauge 2. Among them, the fuel gauge 1 detects the first current corresponding to the battery 1, and the fuel gauge 2 detects the first current corresponding to the battery 2. Then, it is determined whether the absolute values of the first currents corresponding to the battery 1 and the battery 2 respectively after the filtering operation are greater than the current threshold value (Ith). If so, it means that both the battery 1 and the battery 2 are not dead batteries, and the mobile phone can be turned on normally; if not, it means that at least one of the batteries 1 and 2 is a dead battery, and the mobile phone does not perform the startup operation.

Taking the first current corresponding to battery 1 as an example, the manner of comparing the first current corresponding to battery 1 that is subjected to filtering operation with Ith includes but is not limited to the following:

Method 1: Sample the current of battery 1 once at fixed time intervals. After sampling the current of battery 1 multiple times, obtain multiple second currents corresponding to battery 1, calculate the average value of the multiple second currents, use the average value as the first current corresponding to battery 1, and compare it with Ith. If the first current corresponding to battery 1 is greater than Ith, it means that battery 1 is not a dead battery. If the first current corresponding to battery 1 is less than Ith, it means that battery 1 is a dead battery.

Method 2: Sample the current of battery 1 once at a fixed time interval. After sampling the current of battery 1 multiple times, obtain multiple second currents corresponding to battery 1, and compare the multiple second currents with Ith respectively. If each second current is greater than Ith, it means that battery 1 is not a dead battery. If at least one of the multiple second currents is less than Ith, it means that battery 1 is a dead battery.

Method 3: Sample the current of battery 1 once at fixed time intervals. After sampling the current of battery 1 multiple times, obtain multiple second currents corresponding to battery 1, remove the maximum and minimum values of the multiple second currents, and then calculate the average value, use the average value as the first current corresponding to battery 1, and compare it with Ith. If the first current corresponding to battery 1 is greater than Ith, it means that battery 1 is not a dead battery. If the first current corresponding to battery 1 is less than Ith, it means that battery 1 is a dead battery.

The embodiment of the present application does not limit the sampling method of the current of the battery 1. Exemplarily, the method may be that the fuel meter obtains the voltage of the resistor connected in series with the battery 1, and then determines the current of the resistor and the current of the battery 1 based on the voltage and the resistance value of the resistor.

The above only takes battery 1 as an example to illustrate the method of comparing the first current corresponding to battery 1 with Ith. It can be understood that the method of comparing the first current corresponding to battery 2 with Ith is the same as that of battery 1 and will not be repeated here.

It is understandable that the above only takes the electronic device including two batteries as an example to explain the battery detection method provided in the embodiment of the present application, but this does not constitute all limitations on the embodiments of the present application. The method provided in the present application can be applied to an electronic device with multiple batteries. In this case, the electronic device needs to obtain the current corresponding to the multiple batteries respectively and the electronic device can only be turned on when each current is greater than Ith, otherwise the electronic device cannot be turned on.

The method provided in the embodiment of the present application detects the currents corresponding to the multiple batteries of the electronic device after the electronic device is in the triggered startup state, and determines whether the battery is a dead battery according to whether the current exceeds the current threshold, and further determines whether to execute the power-on operation of the electronic device. This method improves the accuracy of dead battery detection, and also avoids the phenomenon of freezing and screen distortion after the electronic device is turned on due to the mistaken judgment of a dead battery as a normal battery, thereby improving the user experience.

In addition, an embodiment of the present application provides an electronic device, which may include the battery detection circuit mentioned in the above embodiment.

The present application provides an electronic device, which includes: one or more processors; one or more memories; one or more memories storing one or more programs, when the one or more programs are executed by the one or more processors, the electronic device executes the battery detection method mentioned in the above embodiment.

The present application provides a chip, which is used to execute the battery detection method mentioned in the above embodiment.

The present application also provides a computer-readable storage medium, on which instructions are stored. When the instructions are executed on a computer, the computer executes the battery detection method mentioned in the above embodiment.

5 shows a schematic diagram of the structure of an electronic device 500. The electronic device 500 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a button 190, a motor 191, an indicator 192, a camera 193, a display screen 194, and a subscriber identification module (SIM) card interface 195. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, and the like.

It is to be understood that the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the electronic device 500. In other embodiments of the present application, the electronic device 500 may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

The power management module 141 may include the circuits involved in the embodiments of the present application. The battery 142 may be a battery module including a plurality of batteries. In the embodiments of the present application, the battery 142 may include the battery 1 and the battery 2 mentioned above.

The processor 110 may include one or more processing units, for example, the processor 110 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and/or a neural-network processing unit (NPU), etc. Different processing units may be independent devices or integrated into one or more processors.

The controller can generate operation control signals according to the instruction operation code and timing signal to complete the control of instruction fetching and execution.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may store instructions or data that the processor 110 has just used or cyclically used. If the processor 110 needs to use the instruction or data again, it may be directly called from the above-mentioned memory. Repeated access is avoided, the waiting time of the processor 110 is reduced, and the efficiency of the system is improved. The processor may be used to execute the battery detection method mentioned in the present application.

The wireless communication function of the electronic device 500 can be implemented through the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modem processor and the baseband processor.

Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in electronic device 500 can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve the utilization of antennas. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In some other embodiments, the antenna can be used in combination with a tuning switch.

The mobile communication module 150 can provide wireless communication solutions including 2G/3G/4G/5G etc. applied to the electronic device 500 .

The modem processor may include a modulator and a demodulator. The modulator is used to modulate the low-frequency baseband signal to be sent into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. After the low-frequency baseband signal is processed by the baseband processor, it is passed to the application processor. The application processor outputs a sound signal through an audio device (not limited to a speaker 170A, a receiver 170B, etc.), or displays an image or video through a display screen 194. In some embodiments, the modem processor may be an independent device. In other embodiments, the modem processor may be independent of the processor 110 and may be set in the same device as the mobile communication module 150 or other functional modules.

The wireless communication module 160 can provide wireless communication solutions including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared (IR), etc., which are applied to the electronic device 500. The wireless communication module 160 can be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, modulates the frequency of the electromagnetic wave signal and filters it, and sends the processed signal to the processor 110. The wireless communication module 160 can also receive the signal to be sent from the processor 110, modulate the frequency of it, amplify it, and convert it into electromagnetic waves for radiation through the antenna 2.

It will be understood that, as used herein, the term "module" may refer to or include an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group) and/or memory that executes one or more software or firmware programs, a combinational logic circuit, and/or other appropriate hardware components that provide the described functionality, or may be part of these hardware components.

It is understood that in each embodiment of the present application, the processor may be a microprocessor, a digital signal processor, a microcontroller, etc., and/or any combination thereof. According to another aspect, the processor may be a single-core processor, a multi-core processor, etc., and/or any combination thereof.

The embodiments disclosed in the present application may be implemented in hardware, software, firmware, or a combination of these implementation methods. The embodiments of the present application may be implemented as a computer program or program code executed on a programmable system, the programmable system comprising at least one processor, a storage system (including volatile and non-volatile memory and/or storage elements), at least one input device, and at least one output device.

Program code may be applied to input instructions to perform the functions described herein and generate output information. The output information may be applied to one or more output devices in a known manner. For purposes of this application, a processing system includes any system having a processor such as, for example, a digital signal processor (DSP), a microcontroller, an application specific integrated circuit (ASIC), or a microprocessor.

Program code can be implemented with high-level programming language or object-oriented programming language to communicate with the processing system. When necessary, program code can also be implemented with assembly language or machine language. In fact, the mechanism described in this application is not limited to the scope of any specific programming language. In either case, the language can be a compiled language or an interpreted language.

In some cases, the disclosed embodiments may be implemented in hardware, firmware, software, or any combination thereof. The disclosed embodiments may also be implemented as instructions carried or stored on one or more temporary or non-temporary machine-readable (e.g., computer-readable) storage media, which may be read and executed by one or more processors. For example, the instructions may be distributed over a network or through other computer-readable media. Therefore, machine-readable media may include any mechanism for storing or transmitting information in a form readable by a machine (e.g., a computer), including, but not limited to, floppy disks, optical disks, optical discs, read-only memories (CD-ROMs), magneto-optical disks, read-only memories (ROMs), random access memories (RAMs), erasable programmable read-only memories (EPROMs), electrically erasable programmable read-only memories (EEPROMs), magnetic or optical cards, flash memory, or a tangible machine-readable memory for transmitting information (e.g., carrier waves, infrared signals, digital signals, etc.) using the Internet in electrical, optical, acoustic, or other forms of propagation signals. Therefore, machine-readable media include any type of machine-readable media suitable for storing or transmitting electronic instructions or information in a form readable by a machine (e.g., a computer).

In the accompanying drawings, some structural or method features may be shown in a specific arrangement and/or order. However, it should be understood that such a specific arrangement and/or order may not be required. Instead, in some embodiments, these features may be arranged in a manner and/or order different from that shown in the illustrative drawings. In addition, the inclusion of structural or method features in a particular figure does not mean that such features are required in all embodiments, and in some embodiments, these features may not be included or may be combined with other features.

It should be noted that the units/modules mentioned in the various device embodiments of the present application are all logical units/modules. Physically, a logical unit/module can be a physical unit/module, or a part of a physical unit/module, or can be implemented as a combination of multiple physical units/modules. The physical implementation method of these logical units/modules themselves is not the most important. The combination of functions implemented by these logical units/modules is the key to solving the technical problems proposed by the present application. In addition, in order to highlight the innovative part of the present application, the above-mentioned device embodiments of the present application do not introduce units/modules that are not closely related to solving the technical problems proposed by the present application, which does not mean that there are no other units/modules in the above-mentioned device embodiments.

It should be noted that in the examples and description of this patent, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present application.

Claims (14)

1. A battery detection method applied to an electronic device, the electronic device comprising a plurality of batteries, the method comprising:

detecting that the electronic equipment is in a trigger starting state; under the condition that the electronic equipment comprises an equalization circuit, acquiring a plurality of first currents respectively corresponding to a plurality of batteries connected in parallel, wherein the equalization circuit is used for equalizing the voltages of the batteries, and the equalization circuit is positioned among the batteries;

and determining that the batteries are in the charge-discharge circuits of the batteries corresponding to the first currents being larger than the current threshold, and executing starting operation on the electronic equipment, wherein when the first currents are larger than the current threshold, the batteries are normally charged and discharged.

2. The method of claim 1, wherein the obtaining a plurality of first currents respectively corresponding to a plurality of batteries included in the electronic device comprises:

for any one of the plurality of batteries, acquiring a first voltage of a resistor corresponding to the any one battery, wherein the resistor corresponding to the any one battery and the any one battery are connected in series in a charge-discharge circuit of the any one battery;

Determining a second current corresponding to the resistor corresponding to any battery based on the first voltage and the resistance value of the resistor corresponding to any battery;

and determining the first current corresponding to any battery based on the second current.

3. The method according to claim 1, wherein the method further comprises:

and determining that a battery corresponding to any one of the first currents is not in a charge-discharge circuit of the battery, and not executing starting operation on the electronic equipment, wherein the battery corresponding to any one of the first currents is smaller than the current threshold.

4. The method of claim 1, wherein the current threshold is determined based on a deviation value of zero current, wherein the deviation value of zero current is derived from sampling the zero current a plurality of times.

5. The method of claim 2, wherein determining the manner in which the first current corresponds to any of the plurality of batteries comprises:

sampling the current corresponding to any one of the batteries for multiple times according to a fixed time interval to obtain multiple second currents;

and taking the average value of the second currents as the first current corresponding to any battery.

6. The method of claim 2, wherein determining the manner in which the first current corresponds to any of the plurality of batteries comprises:

sampling the current corresponding to any one of the batteries for multiple times according to a fixed time interval to obtain multiple second currents;

and taking the second currents as the first currents corresponding to any battery.

7. The method of claim 2, wherein determining the manner in which the first current corresponds to any of the plurality of batteries comprises:

sampling the current corresponding to any one of the batteries for multiple times according to a fixed time interval to obtain multiple second currents;

and taking the average value of the currents excluding the maximum value and the minimum value in the second currents as the first current corresponding to any battery.

8. The method of any of claims 1-4, the electronic device comprising the equalization circuit, a detection module, a battery module, and a resistance module, the detection module comprising a first fuel gauge and a second fuel gauge, the battery module comprising a first battery and a second battery, the resistance module comprising a first resistance and a second resistance;

The output end of the first battery is connected with one end of the equalizing circuit, and the output end of the second battery is connected with the other end of the equalizing circuit;

the input end of the first battery is connected with one end of the first resistor, and the other end of the first resistor is grounded;

the input end of the second battery is connected with one end of the second resistor, and the other end of the second resistor is grounded;

the first electricity meter comprises a first end, a second end, a third end and a fourth end, wherein the first end is connected with the output end of the first battery, the second end is connected with one end of the first resistor, and the third end and the fourth end are both connected with the other end of the first resistor;

the second electricity meter comprises a fifth end, a sixth end, a seventh end and an eighth end, wherein the fifth end is connected with the output end of the second battery, the sixth end is connected with one end of the second resistor, and the seventh end and the eighth end are both connected with the other end of the second resistor.

9. The battery detection circuit is characterized by being applied to electronic equipment, and comprises a detection module, a battery module, a resistance module and a control module, wherein the battery module comprises a plurality of batteries connected in parallel, the resistance module comprises a plurality of resistors, and each resistor is respectively connected with each corresponding battery;

The detection module is used for detecting a plurality of voltages corresponding to a plurality of resistors in the resistor module respectively when the electronic equipment is in a trigger starting state;

the control module is used for determining a first current of each battery connected in series with each resistor based on the voltage corresponding to each resistor and the resistance value of each resistor when the electronic equipment comprises an equalization circuit, wherein the equalization circuit is used for equalizing the voltage of each battery and is positioned between the batteries;

and determining that each battery is in a charging and discharging circuit of each battery according to the fact that the first current of each battery is larger than a current threshold value, and executing starting operation on the electronic equipment, wherein when the first current of each battery is larger than the current threshold value, each battery is charged and discharged normally.

10. The circuit of claim 9, wherein the circuit further comprises a logic circuit,

the control module is further configured to determine that any battery is not in the charge-discharge circuit of any battery, and not perform a startup operation on the electronic device, where the first current of any battery in the first currents of the batteries is smaller than the current threshold.

11. An electronic device comprising the battery detection circuit of claim 9 or 10.

12. An electronic device, comprising: one or more processors; one or more memories; the one or more memories stores one or more programs that, when executed by the one or more processors, cause the electronic device to perform the battery detection method of any of claims 1-8.

13. A chip for performing the battery detection method according to any one of claims 1 to 8.

14. A computer readable storage medium having stored thereon instructions that, when executed on a computer, cause the computer to perform the battery detection method of any one of claims 1 to 8.