CN113922459A - Charging protection method and device, electronic equipment and storage medium - Google Patents
Charging protection method and device, electronic equipment and storage medium Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
- H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
Abstract
The disclosure relates to a charging protection method, a charging protection device, an electronic device and a storage medium, wherein the method comprises the following steps: responding to the electronic equipment to be charged in a first charging mode, and acquiring circuit parameters, wherein the charging voltage in the first charging mode is greater than a voltage threshold value; determining whether the first connector and/or the second connector is in a fault state according to the circuit parameter; stopping charging the battery in the first charging mode in response to the first connector and/or the second connector being in a fault state. By adopting the method, when the electronic equipment detects that any connector is in a fault state, the electronic equipment can take protective measures in time and stop charging in a high-power mode, so that the charging protection effect is realized. The safety of the battery in the charging process and the service life of the battery are improved.
Description
Technical Field
The present disclosure relates to the field of electronic devices, and in particular, to a charging protection method and apparatus, an electronic device, and a storage medium.
Background
With the development of charging technology, the charging power of electronic equipment is larger and larger. In an electronic device supporting high-power charging, a battery and a main board are connected through two connectors, and the two connectors output current from the battery or input current to the battery in common.
In the charging mode of the related art, the battery cell has a risk of being over-temperature (i.e., the charging temperature is greater than or equal to the temperature protection threshold) or being over-charged (i.e., being fully charged but still being charged), which affects the safety and the service life of the battery.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a charge protection method, apparatus, electronic device, and storage medium.
According to a first aspect of the embodiments of the present disclosure, a charging protection method is provided, which is applied to an electronic device, where the electronic device includes a battery and a motherboard, and the battery is connected to the motherboard through a first connector and a second connector; the method comprises the following steps:
responding to the electronic equipment to be charged in a first charging mode, and acquiring circuit parameters, wherein the charging voltage in the first charging mode is greater than a voltage threshold value;
determining whether the first connector and/or the second connector is in a fault state according to the circuit parameter;
stopping charging the battery in the first charging mode in response to the first connector and/or the second connector being in a fault state.
In some possible embodiments, the circuit parameters include: the temperature of the first connector and the second connector;
the obtaining circuit parameters comprises:
acquiring a first temperature of the first connector and a second temperature of the second connector at each time node within a preset time length; the preset time length comprises a plurality of continuous time nodes.
In some possible embodiments, the circuit parameters further include: the electricity meter is used for collecting the current of the battery and is connected with the mainboard through the first connector;
the obtaining circuit parameters further comprises:
and acquiring the current collected by the fuel gauge in response to the temperature difference between the first temperature and the second temperature at the target time node being greater than or equal to a temperature threshold value.
In some possible embodiments, the circuit parameters further include: the number of times of communication failure between the main board and the electricity meter;
the obtaining circuit parameters further comprises:
and determining the number of times of communication failure of the target time node according to the communication state of the mainboard and the electricity meter under each time node.
In some possible embodiments, the determining whether the first connector and/or the second connector is in a fault state according to the circuit parameter includes:
in response to the first temperature being greater than the second temperature and the current collected by the fuel gauge being greater than or equal to a preset current, determining that the second connector is in a fault state;
and determining that the first connector is in a fault state in response to the first temperature being less than the second temperature and the number of times of communication failure being greater than or equal to a preset number of times.
In some of the possible embodiments of the present invention,
in the first charging mode, the method further comprises:
determining the current charging times; wherein the current charging times are used for characterizing: the electronic equipment is connected with the charging equipment and receives the times of power supply of the charging equipment;
determining a voltage switching parameter according to the current charging times; the voltage switching parameter is used for representing a critical value of the electronic equipment which is switched from a constant current mode to a constant voltage mode in the charging process.
In some possible embodiments, the circuit parameters further include: a present voltage and a present current of the battery;
the determining a voltage switching parameter according to the current charging times includes:
and determining the voltage switching parameter according to the previous charging times and the current.
In some possible embodiments, the determining a voltage switching parameter according to the present charging number and the present current includes:
determining a voltage parameter value according to the current charging times;
determining a voltage compensation value according to the current and a preset impedance;
and determining the voltage switching parameter according to the voltage parameter value and the voltage compensation value.
In some possible embodiments, the determining a voltage parameter value according to the current charging number includes:
acquiring configuration information, wherein the configuration information is used for representing a mapping relation between the charging times and the voltage parameter value;
and determining the voltage parameter value corresponding to the current charging times according to the configuration information and the current charging times.
In some possible embodiments, the stopping the charging of the battery in the first charging mode includes:
stopping the charging process of the first charging mode, and switching to a second charging mode to charge the battery, wherein the charging voltage of the second charging mode is smaller than a voltage threshold;
alternatively, the first and second electrodes may be,
stopping charging the battery, and outputting prompt information, wherein the prompt information is used for: and prompting that the electronic equipment is in a charging stop state.
According to a second aspect of the embodiments of the present disclosure, a charging protection device is provided, which is applied to an electronic device, where the electronic device includes a battery and a motherboard, and the battery is connected to the motherboard through a first connector and a second connector; wherein, the device includes:
the electronic device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for responding to the fact that the electronic device is charged in a first charging mode and acquiring circuit parameters, and the charging voltage in the first charging mode is larger than a voltage threshold value;
a determining module for determining whether the first connector and/or the second connector is in a fault state according to the circuit parameter;
a control module to stop charging the battery in the first charging mode in response to the first connector and/or the second connector being in a fault state.
In some possible embodiments, the circuit parameters include: the temperature of the first connector and the second connector;
the acquisition module is configured to:
acquiring a first temperature of the first connector and a second temperature of the second connector at each time node within a preset time length; the preset time length comprises a plurality of continuous time nodes.
In some possible embodiments, the circuit parameters further include: the electricity meter is used for collecting the current of the battery and is connected with the mainboard through the first connector;
the acquisition module is further configured to:
and acquiring the current collected by the fuel gauge in response to the temperature difference between the first temperature and the second temperature at the target time node being greater than or equal to a temperature threshold value.
In some possible embodiments, the circuit parameters further include: the number of times of communication failure between the main board and the electricity meter;
the acquisition module is further configured to:
and determining the number of times of communication failure of the target time node according to the communication state of the mainboard and the electricity meter under each time node.
In some possible embodiments, the determining module is to:
in response to the first temperature being greater than the second temperature and the current collected by the fuel gauge being greater than or equal to a preset current, determining that the second connector is in a fault state;
and determining that the first connector is in a fault state in response to the first temperature being less than the second temperature and the number of times of communication failure being greater than or equal to a preset number of times.
In some possible embodiments, in the first charging mode, the determining module is further configured to:
determining the current charging times; wherein the current charging times are used for characterizing: the electronic equipment is connected with the charging equipment and receives the times of power supply of the charging equipment;
determining a voltage switching parameter according to the current charging times; the voltage switching parameter is used for representing a critical value of the electronic equipment which is switched from a constant current mode to a constant voltage mode in the charging process.
In some possible embodiments, the circuit parameters further include: a present voltage and a present current of the battery;
the determination module is to:
and determining the voltage switching parameter according to the previous charging times and the current.
In some possible embodiments, the determining module is further configured to:
determining a voltage parameter value according to the current charging times;
determining a voltage compensation value according to the current and a preset impedance;
and determining the voltage switching parameter according to the voltage parameter value and the voltage compensation value.
In some possible embodiments, the determining module is further configured to:
acquiring configuration information, wherein the configuration information is used for representing a mapping relation between the charging times and the voltage parameter value;
and determining the voltage parameter value corresponding to the current charging times according to the configuration information and the current charging times.
In some possible embodiments, the control module is configured to:
stopping the charging process of the first charging mode, and switching to a second charging mode to charge the battery, wherein the charging voltage of the second charging mode is smaller than a voltage threshold;
alternatively, the first and second electrodes may be,
stopping charging the battery, and outputting prompt information, wherein the prompt information is used for: and prompting that the electronic equipment is in a charging stop state.
According to a third aspect of the embodiments of the present disclosure, there is provided an electronic device, including:
a processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the charge protection method as defined in any one of the above.
According to a fourth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, wherein instructions, when executed by a processor of an electronic device, enable the electronic device to perform the charge protection method as described in any one of the above.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: by adopting the method disclosed by the invention, the electronic equipment can judge whether the two connectors are in a fault state or not according to the circuit parameters. When any connector is detected to be in a fault state, the electronic equipment can take protective measures in time and stop charging in a high-power mode, so that the charging protection effect is realized. The safety of the battery in the charging process and the service life of the battery are improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a flow chart illustrating a method according to an example embodiment.
FIG. 2 is a flow chart illustrating a method according to an example embodiment.
FIG. 3 is a flow chart illustrating a method according to an example embodiment.
FIG. 4 is a flow chart illustrating a method according to an example embodiment.
Fig. 5 is a block diagram illustrating an apparatus according to an example embodiment.
FIG. 6 is a block diagram of an electronic device shown in accordance with an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
In the related art, the reasons for the over-temperature or over-charge risk of the battery cell mainly include the following two aspects:
in a first aspect, loosening of one of the two connectors results in over-temperature of the cell.
In the factory or production process, due to the assembling method or the problems of extrusion, collision and the like, one connector may loosen and fall off, the charging current can only be charged through the other connector which is normally connected, so that the temperature rise of the normally connected connector in the charging process is high, the battery cell has the risk of over-temperature (namely the charging temperature is greater than or equal to the temperature protection threshold), and the battery cell is easy to have safety accidents at high temperature, so that the safety of the battery is influenced.
When the problems occur in the related art, the machine needs to be disassembled for processing, and the operation is complicated.
In the second aspect, the over-charging of the battery cell caused by unreasonable charging parameters, that is, the battery cell is fully charged and still continues to be charged, may cause the voltage of the battery cell to continue to rise, which may cause a safety accident.
On the basis that the electronic equipment supports the quick charging function, the charging process can be a high-speed charging mode or a common charging mode by combining different types of chargers. In the two charging modes, corresponding voltage switching parameters are set in a charging management chip (PMIC), and the voltage switching parameters can be used as switching points from a constant current mode to a constant voltage mode.
The PMIC is arranged in the mainboard and can be connected with a battery core of the battery through a protection circuit board in the battery. The PMIC has impedance to the wire that is connected to battery electricity core, and the voltage drop that impedance brought can influence the rationality of voltage parameter. In addition, as the battery ages, the battery capacity and the full charge voltage gradually decrease, and if the same voltage switching parameters as those of the unaged battery are adopted, the battery cell is overcharged. Therefore, in consideration of the wiring impedance and the battery aging, more precise and refined compensation or adjustment of the voltage switching parameter is required.
The embodiment of the disclosure provides a charging protection method applied to electronic equipment, wherein the electronic equipment comprises a battery and a mainboard, and the battery is connected with the mainboard through a first connector and a second connector. The method comprises the following steps: the method includes acquiring a circuit parameter in response to the electronic device being charged in a first charging mode, wherein a charging voltage in the first charging mode is greater than a voltage threshold. Based on the circuit parameter, it is determined whether the first connector and/or the second connector is in a fault state. In response to the first connector and/or the second connector being in a fault state, charging the battery in the first charging mode is stopped. By adopting the method disclosed by the invention, the electronic equipment can judge whether the two connectors are in a fault state or not according to the circuit parameters. When any connector is detected to be in a fault state, the electronic equipment can take protective measures in time and stop charging in a high-power mode, so that the charging protection effect is realized. The safety of the battery in the charging process and the service life of the battery are improved.
In an exemplary embodiment, as shown in fig. 1, the charging protection method of the present embodiment is applied to an electronic device. The electronic device can be a mobile phone, a tablet personal computer, an intelligent wearable device and other terminal devices. The electronic equipment comprises a battery and a mainboard, wherein the battery is connected with the mainboard through a first connector and a second connector. In the disclosed embodiment, the first connector serves as a main connector, and the second connector serves as a sub-connector.
As shown in fig. 1, the method in this embodiment may include the following steps:
and S110, responding to the fact that the electronic equipment is charged in the first charging mode, and obtaining circuit parameters.
And S120, determining whether the first connector and/or the second connector are in a fault state or not according to the circuit parameters.
And S130, in response to the first connector and/or the second connector being in a failure state, stopping charging the battery in the first charging mode.
In step S110, the charging voltage in the first charging mode is greater than a voltage threshold, which may be set to a rated voltage of the battery, for example, 4.5V. The motherboard of the electronic device includes a processor (CPU) or is integrated with the CPU. In the first charging mode, a charging chip (which can adopt a charge pump) of the electronic equipment controls the charging process, and a constant-current high-power high-voltage is adopted to realize the quick charging function.
In this step, the circuit parameters may include: the temperature of the first connector and the second connector. The method for acquiring the circuit parameter by the CPU includes: the temperature sensing element connected with the first connector acquires the temperature of the first connector in real time, the temperature sensing element connected with the second connector acquires the temperature of the second connector in real time, and the CPU actively acquires the temperatures acquired by the two temperature sensing elements when in demand.
In step S120, after acquiring the circuit parameters including the temperatures of the two connectors, the CPU may perform an analysis and determination according to the circuit parameters to determine whether the two connectors are in a failure state. In this step, the fault state may be an abnormal state of the connector caused by loosening or dropping of the connector.
In one example, the CPU determines whether a fault condition exists based on the temperature of the two connectors.
In this example, after the electronic device is connected to the charging device, when the electronic device starts to use the first charging mode, the CPU may control to create a monitoring event or a monitoring process, so as to drive the temperature sensing element to acquire the temperatures of the two connectors in real time or at regular time, and monitor the temperature difference between the two connectors at the same time. It will be appreciated that if both connectors are in normal operation, the temperature of both connectors should be the same or similar.
When the temperature difference between the two connectors is too large, it indicates that the charging current flows into the connector corresponding to the high temperature in a concentrated manner, and the temperature rise of the connector is too high. The low temperature connector may fail at this time.
Alternatively, when the charging process has been initiated, but the temperature of both connectors is at a lower temperature, this indicates that both connectors may fail.
In step S130, when the first connector and/or the second connector is in a failure state, the failure state may be caused by connector loosening. In this step, the CPU stops charging the battery in the first charging mode to avoid the danger caused by continuing to charge in the first charging mode with high power and high voltage.
In this step, the charging process in the first charging mode is stopped, and the following two examples may be included.
In a first example:
the method comprises the following steps: step S130-1, the charging process of the first charging mode is stopped, and the second charging mode is switched to charge the battery. This example is applicable to a scenario where the degree of failure is relatively small, such as detecting only one connector failure.
In this example, the charging voltage of the second charging mode is less than the voltage threshold. The CPU can control the charging chip to stop working after detecting the fault so as to stop the first charging mode; and simultaneously issuing a control instruction to control a charging management chip (PMIC) to start so as to charge the battery in a second charging mode. Charging current is less in the second charging mode, and the problem that the temperature rise of the connector is too high can be effectively improved.
In a second example:
the method comprises the following steps: and step S130-2, stopping charging the battery and outputting prompt information. In this example, the method is suitable for a scene with a high failure degree, for example, two connectors fail. In this scenario, the CPU may control the charging process to terminate and alert the user in the form of an interface (UI) prompt. The prompt interface may include, for example, a text prompt or an icon prompt.
In this example, this may be performed on the basis of the first example. After switching to the second charging mode, the electronic device continues to monitor the temperature of the connector which is not failed, and if the temperature is still abnormal (for example, greater than the safety threshold), the charging process in the second charging mode is stopped, and meanwhile, prompt information is output.
Wherein the prompt message is used for: and prompting that the electronic equipment is in a charging stop state. The prompt information may also prompt the warning content corresponding to the fault state, for example, the warning content includes the reason that the charging is stopped: the first connector or the second connector fails. The prompt message can be displayed on the current interface of the electronic equipment or output in a voice mode.
In an exemplary embodiment, the method of the present embodiment includes steps S110 to S130. Wherein the circuit parameters include: the temperature of the first connector and the second connector.
Referring to fig. 2, step S110 may include the steps of:
s201, acquiring a first temperature of the first connector and a second temperature of the second connector at each time node within a preset time length.
In step S201, a preset time duration includes a plurality of consecutive time nodes, and the time interval between every two adjacent time nodes may be the same. In this step, the preset duration may be set as the total charging duration of the charging process. In a preset time length, starting from the initial charging time, every time interval is recorded as a time node.
For example, the time interval is set to 5min, the initial charging time is set to 0, the preset time duration is 2h, and within 2h, 0, 5min, 10min, and 15min … … can be set to be time nodes. At each time node, the CPU may obtain the temperature of both connectors, with the first temperature and the second temperature at each time node being a set. It can be understood that the temperature sensing element can acquire the temperature of the connector in real time for the CPU to acquire when required.
At each time node, the CPU may determine a temperature difference based on the acquired first and second temperatures. With reference to the foregoing embodiments, if both connectors are in a normal operating state, the temperatures of the two connectors should be the same or similar, so that when the temperature difference is greater than the temperature threshold, the connector with a lower temperature may have a fault. Further verification may be performed in conjunction with steps S202 and S203.
In one example, the circuit parameters further include: current collected by the fuel gauge. Still referring to fig. 2, the present example may further include the following steps:
s202, responding to the fact that the temperature difference between the first temperature and the second temperature under the target time node is larger than or equal to a temperature threshold value, and obtaining the current collected by the fuel gauge.
In step S202, the fuel gauge is used for collecting the current of the battery, and the fuel gauge is connected to the main board through the first connector. The electricity meter can be arranged on a protective circuit board of the battery or in the battery packaging layer, and the electricity meter passes through I2The C wire is connected with the mainboard through the first connector. One current detection point of the electricity meter is positioned on the protection circuit board, and the other current detection point of the electricity meter is positioned on the main board. As described above, the first connector is a main connector, the second connector is a sub-connector, and the electricity meter is not connected to the second connector.
When the two connectors are in a normal working state, the current collected by the fuel gauge is the current of the battery all the time, and the current of the two connectors is the same or has small deviation, such as half of the current. When only the first connector fails, the CPU will not be able to properly collect the battery current through the fuel gauge (but can know the battery current based on the CPU's communication with the protection circuit board). When only the second connector fails, the current collected by the fuel gauge is the current of the battery and is also the current of the first connector.
Therefore, when the temperature is abnormal, the electricity meter can still normally collect current, which indicates that the first connector is not in fault and the connector with the fault is possibly the second connector; and when the electricity meter cannot normally collect current, the first connector is indicated to be in fault.
The target time node may be a representative: any time node with the temperature difference larger than or equal to the temperature threshold value in the preset time length. And at the target time node, the temperature difference is greater than or equal to the temperature threshold value, which indicates that the connector may have a fault, and the CPU acquires the current collected by the electricity meter. The current obtained after the temperature difference is greater than or equal to the temperature threshold in this step.
In one example, the circuit parameters further include: the number of times the motherboard failed to communicate with the fuel gauge. Still referring to fig. 2, the present example may further include the following steps:
s203, determining the number of times of communication failure of the target time node according to the communication state of the mainboard and the electricity meter under each time node.
In step S203, the communication status includes communication success and communication failure. The CPU can initiate a communication request to the fuel gauge at each time node, after the communication request is initiated, if the CPU can receive feedback of the fuel gauge, the communication is successful, otherwise, the communication is failed. The CPU determines the cumulative number of communications failures that occurred at the target time node.
It is to be understood that, in the embodiment of the present disclosure, the order of step S203 is not limited, and it may also be performed before step S201.
In an exemplary embodiment, on the basis that step S110 includes step S201 to step S203, step S120 in this embodiment may include the following steps:
and S120-1, in response to the fact that the first temperature is higher than the second temperature and the current collected by the electricity meter is higher than or equal to the preset current, determining that the second connector is in a fault state.
In this step S120-1, the preset current may be set as the present current of the battery. The present current of the battery may be known by the CPU, which may determine the present current of the battery in conjunction with the charging process to dynamically determine the appropriate preset current. The CPU can know the current of the battery in two ways:
in one example, when the fuel gauge works normally, the first connector is also in a normal state, the current collected by the fuel gauge is the current of the battery, the CPU can obtain the current of the battery through the fuel gauge, and at the moment, the current collected by the fuel gauge is equal to the preset current, it can be determined that the second connector is in a fault state.
In another example, the first connector may also be in a fault state when the fuel gauge is not working properly, at which time the fuel gauge is unable to pick up the current of the battery. Therefore, the CPU needs to know the current of the battery based on the communication with the battery protection circuit board, for example, the current known by the CPU is not zero, and the current collected by the electricity meter is zero, that is, the current collected by the electricity meter is smaller than the preset current, and it is determined that the second connector is in the normal state.
In step S120-1, when the temperature difference is greater than or equal to the temperature threshold and the first temperature is greater than the second temperature, it indicates that the temperature rise of the first connector is serious, and the temperature of the second connector is low. In combination with the connection mode of the electricity meter, at this time, the current collected by the electricity meter is still greater than or equal to the preset current, which indicates that the first connector is working normally, and the charging current may flow to the battery through the first connector, so that the second connector is in a fault state.
And S120-2, determining that the first connector is in a fault state in response to the first temperature being less than the second temperature and the number of times of communication failures being greater than or equal to a preset number of times.
In this step S120-2, the preset number of times may be set to 3 times, for example. When the temperature difference is greater than or equal to the temperature threshold value and the first temperature is less than the second temperature, the temperature rise of the first connector is serious, and the temperature of the second connector is lower. On the basis, in combination with the communication failure with the electricity meter, it is known that the current cannot be known by the electricity meter at this time, and the first connector may malfunction.
In an exemplary embodiment, as shown in fig. 3, in the first charging mode, the method of this embodiment may further include the following steps:
and S310, determining the current charging times.
And S320, determining a voltage switching parameter according to the current charging times.
In step S310, the current charging number is used to characterize: the electronic equipment is connected with the charging equipment and receives the times of power supply of the charging equipment. The electronic device can record the charging times each time the charging device is inserted and receives power supply from the charging device.
In step S320, the voltage switching parameter (FV) is used to represent a threshold value of the electronic device during the charging process when the electronic device is switched from the constant current mode to the constant voltage mode.
In this step, the circuit parameters further include: the present voltage and the present current of the battery. Step S320 may include: and determining a voltage switching parameter according to the previous charging times and the current.
In an exemplary embodiment, as shown in fig. 4, the step S320 may include the steps of:
s401, determining a voltage parameter value according to the current charging times.
S402, determining a voltage compensation value according to the current and the preset impedance.
And S403, determining a voltage switching parameter according to the voltage parameter value and the voltage compensation value.
In step S401, the electronic device may determine and store the configuration information in advance during the factory shipment.
The method comprises the following steps: s401-1 obtains configuration information. In this step, the configuration information is used to represent a mapping relationship between the number of charging times and the voltage parameter value. The CPU may call pre-stored configuration information. S401-2, determining a voltage parameter value corresponding to the current charging times according to the configuration information and the current charging times. In this step, the CPU may obtain the voltage parameter value FV' corresponding to the current charging number in the configuration information by looking up a table or by traversing a query.
In this step, the aging state of the battery is represented by the number of times the battery is charged. Along with the change of the charging times, the voltage parameter value dynamically determined by the electronic equipment can better accord with the current aging state of the battery, and the voltage parameter value can be more reasonably selected.
In step S402, the preset impedance may refer to an impedance (R) generated by a wire from a battery cell to a PMIC, and the wire impedance is a fixed value for the same electronic device. The CPU obtains the current (I) of the battery, and calculates a voltage compensation value U by using the current (I) and the current (I) of the battery.
In step S403, the voltage switching parameter satisfies FV: FV' + U. The determined voltage switching parameter may be temporarily stored in a register in the PMIC for the PMIC to call.
For example, the PMIC monitors the charging voltage of the battery in the charging process in real time, and when the charging voltage is greater than or equal to FV (for example, when the battery is about to be fully charged), the PMIC reports the charging voltage to the CPU, and controls the charging process to switch from constant-current charging to constant-voltage charging according to the CPU instruction. Under the constant voltage charging, the charging current is gradually reduced until the battery is fully charged, and the charging process is completed. After the charging is finished, the temporarily stored voltage switching parameters can be deleted.
In this embodiment, in combination with step S401, the voltage parameter value corresponds to the charging frequency (i.e., the aging degree of the battery). In combination with the impedance of the trace in step S402, the voltage compensation value U in this embodiment is in mV order.
Thus, the electronic device of the present embodiment may dynamically determine an appropriate voltage switching parameter each time it is charged. The electronic device adjusts the voltage switching parameters more finely and takes into account the capacity loss problem associated with battery aging (aged batteries have lower full charge than unaged batteries). Reasonable voltage switching parameters are selected, so that the battery can be prevented from being overcharged, the service life of the battery is effectively prolonged, and the endurance advantage of the battery is ensured.
In an exemplary embodiment, the present disclosure further provides a charging protection device applied to an electronic device, where the electronic device includes a battery and a motherboard, and the battery is connected to the motherboard through a first connector and a second connector. Wherein, as shown in fig. 5, the apparatus comprises: an acquisition module 110, a determination module 120, and a control module 130. The apparatus in this embodiment is used to implement the method as shown in fig. 1. The obtaining module 110 is configured to obtain a circuit parameter in response to the electronic device being charged in a first charging mode, where a charging voltage in the first charging mode is greater than a voltage threshold. The determining module 120 is configured to determine whether the first connector and/or the second connector is in a fault state according to the circuit parameter. The control module 130 is configured to stop charging the battery in the first charging mode in response to the first connector and/or the second connector being in the failure state.
In one exemplary embodiment, the circuit parameters include: the temperature of the first connector and the second connector; still referring to fig. 5, the obtaining module 110 is configured to: acquiring a first temperature of the first connector and a second temperature of the second connector at each time node within a preset time length; the preset time length comprises a plurality of continuous time nodes.
In this embodiment, the circuit parameters further include: the current that the fuel gauge was gathered, wherein, the fuel gauge is used for gathering the current of battery, and the fuel gauge passes through first connector and mainboard connection. The obtaining module 110 is further configured to: and acquiring the current collected by the fuel gauge in response to the temperature difference between the first temperature and the second temperature under the target time node being greater than or equal to the temperature threshold.
In this embodiment, the circuit parameters further include: the number of times the motherboard failed to communicate with the fuel gauge. The obtaining module 110 is further configured to: and determining the number of times of communication failure of the target time node according to the communication state of the mainboard and the electricity meter under each time node.
In this embodiment, the determining module 120 is configured to: in response to the first temperature being higher than the second temperature and the current collected by the fuel gauge being higher than or equal to a preset current, determining that the second connector is in a fault state; and determining that the first connector is in a fault state in response to the first temperature being less than the second temperature and the number of communication failures being greater than or equal to a preset number.
In an exemplary embodiment, still referring to fig. 5, in the first charging mode, the determining module 120 is further configured to: determining the current charging times; wherein, the current number of times of charging is used for the characterization: the electronic equipment is connected with the charging equipment and receives the times of power supply of the charging equipment; determining a voltage switching parameter according to the current charging times; the voltage switching parameter is used for representing a critical value of the electronic equipment which is switched from a constant current mode to a constant voltage mode in the charging process.
In this embodiment, the circuit parameters further include: the present voltage and the present current of the battery. The determination module 120 is further configured to: and determining a voltage switching parameter according to the previous charging times and the current.
In this embodiment, the determining module 120 is further configured to: determining a voltage parameter value according to the current charging times; determining a voltage compensation value according to the current and the preset impedance; and determining a voltage switching parameter according to the voltage parameter value and the voltage compensation value.
In this embodiment, the determining module 120 is further configured to: acquiring configuration information, wherein the configuration information is used for representing a mapping relation between the charging times and the voltage parameter value; and determining a voltage parameter value corresponding to the current charging times according to the configuration information and the current charging times.
In an exemplary embodiment, still referring to FIG. 5, the control module 130 is configured to: stopping the charging process of the first charging mode, and switching to a second charging mode to charge the battery, wherein the charging voltage of the second charging mode is smaller than the voltage threshold; or stopping charging the battery and outputting prompt information, wherein the prompt information is used for: and prompting that the electronic equipment is in a charging stop state.
Fig. 6 is a block diagram of an electronic device. The present disclosure also provides for an electronic device, for example, the device 500 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
The processing component 502 generally controls overall operation of the device 500, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 502 may include one or more processors 520 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 502 can include one or more modules that facilitate interaction between the processing component 502 and other components. For example, the processing component 502 can include a multimedia module to facilitate interaction between the multimedia component 508 and the processing component 502.
The memory 504 is configured to store various types of data to support operation at the device 500. Examples of such data include instructions for any application or method operating on device 500, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 504 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The multimedia component 508 includes a screen that provides an output interface between the device 500 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 508 includes a front facing camera and/or a rear facing camera. The front-facing camera and/or the rear-facing camera may receive external multimedia data when the device 500 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 510 is configured to output and/or input audio signals. For example, the audio component 510 includes a Microphone (MIC) configured to receive external audio signals when the device 500 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 504 or transmitted via the communication component 516. In some embodiments, audio component 510 further includes a speaker for outputting audio signals.
The I/O interface 512 provides an interface between the processing component 502 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor assembly 514 includes one or more sensors for providing various aspects of status assessment for the device 500. For example, the sensor assembly 514 may detect an open/closed state of the device 500, the relative positioning of the components, such as a display and keypad of the device 500, the sensor assembly 514 may also detect a change in the position of the device 500 or a component of the device 500, the presence or absence of user contact with the device 500, orientation or acceleration/deceleration of the device 500, and a change in the temperature of the apparatus 500. The sensor assembly 514 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 514 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 514 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 516 is configured to facilitate communications between the device 500 and other devices in a wired or wireless manner. The device 500 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 516 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 516 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the device 500 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
A non-transitory computer readable storage medium, such as the memory 504 including instructions executable by the processor 520 of the device 500 to perform the method, is provided in another exemplary embodiment of the present disclosure. For example, the computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like. The instructions in the storage medium, when executed by a processor of the electronic device, enable the electronic device to perform the above-described method.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (18)
1. A charging protection method is applied to electronic equipment, wherein the electronic equipment comprises a battery and a mainboard, and the battery is connected with the mainboard through a first connector and a second connector; the method comprises the following steps:
responding to the electronic equipment to be charged in a first charging mode, and acquiring circuit parameters, wherein the charging voltage in the first charging mode is greater than a voltage threshold value;
determining whether the first connector and/or the second connector is in a fault state according to the circuit parameter;
stopping charging the battery in the first charging mode in response to the first connector and/or the second connector being in a fault state.
2. The charge protection method of claim 1, wherein the circuit parameters comprise: the temperature of the first connector and the second connector; the obtaining circuit parameters comprises:
acquiring a first temperature of the first connector and a second temperature of the second connector at each time node within a preset time length; the preset time length comprises a plurality of continuous time nodes.
3. The charge protection method of claim 2, wherein the circuit parameters further comprise: the electricity meter is used for collecting the current of the battery and is connected with the mainboard through the first connector;
the obtaining circuit parameters further comprises:
and acquiring the current collected by the fuel gauge in response to the temperature difference between the first temperature and the second temperature at the target time node being greater than or equal to a temperature threshold value.
4. The charge protection method of claim 3, wherein the circuit parameters further comprise: the number of times of communication failure between the main board and the electricity meter;
the obtaining circuit parameters further comprises:
and determining the number of times of communication failure of the target time node according to the communication state of the mainboard and the electricity meter under each time node.
5. The charge protection method of claim 4, wherein said determining whether said first connector and/or said second connector is in a fault state based on said circuit parameter comprises:
in response to the first temperature being greater than the second temperature and the current collected by the fuel gauge being greater than or equal to a preset current, determining that the second connector is in a fault state;
and determining that the first connector is in a fault state in response to the first temperature being less than the second temperature and the number of times of communication failure being greater than or equal to a preset number of times.
6. The charge protection method according to claim 1,
in the first charging mode, the method further comprises:
determining the current charging times; wherein the current charging times are used for characterizing: the electronic equipment is connected with the charging equipment and receives the times of power supply of the charging equipment;
determining a voltage switching parameter according to the current charging times; the voltage switching parameter is used for representing a critical value of the electronic equipment which is switched from a constant current mode to a constant voltage mode in the charging process.
7. The charge protection method of claim 6, wherein the circuit parameters further comprise: a present voltage and a present current of the battery;
the determining a voltage switching parameter according to the current charging times includes:
and determining the voltage switching parameter according to the previous charging times and the current.
8. The charge protection method of claim 7, wherein determining a voltage switching parameter according to the present charge number and the present current comprises:
determining a voltage parameter value according to the current charging times;
determining a voltage compensation value according to the current and a preset impedance;
and determining the voltage switching parameter according to the voltage parameter value and the voltage compensation value.
9. The charge protection method of claim 8, wherein said determining a voltage parameter value according to the current charging number comprises:
acquiring configuration information, wherein the configuration information is used for representing a mapping relation between the charging times and the voltage parameter value;
and determining the voltage parameter value corresponding to the current charging times according to the configuration information and the current charging times.
10. The charge protection method according to any one of claims 1 to 9, wherein the stopping of charging the battery in the first charging mode includes:
stopping the charging process of the first charging mode, and switching to a second charging mode to charge the battery, wherein the charging voltage of the second charging mode is smaller than a voltage threshold;
alternatively, the first and second electrodes may be,
stopping charging the battery, and outputting prompt information, wherein the prompt information is used for: and prompting that the electronic equipment is in a charging stop state.
11. A charging protection device is applied to electronic equipment, wherein the electronic equipment comprises a battery and a mainboard, and the battery is connected with the mainboard through a first connector and a second connector; wherein, the device includes:
the electronic device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for responding to the fact that the electronic device is charged in a first charging mode and acquiring circuit parameters, and the charging voltage in the first charging mode is larger than a voltage threshold value;
a determining module for determining whether the first connector and/or the second connector is in a fault state according to the circuit parameter;
a control module to stop charging the battery in the first charging mode in response to the first connector and/or the second connector being in a fault state.
12. The charge protection device of claim 11, wherein the circuit parameters comprise: the temperature of the first connector and the second connector;
the acquisition module is configured to:
acquiring a first temperature of the first connector and a second temperature of the second connector at each time node within a preset time length; the preset time length comprises a plurality of continuous time nodes.
13. The charge protection device of claim 12, wherein the circuit parameters further comprise: the electricity meter is used for collecting the current of the battery and is connected with the mainboard through the first connector;
the acquisition module is further configured to:
and acquiring the current collected by the fuel gauge in response to the temperature difference between the first temperature and the second temperature at the target time node being greater than or equal to a temperature threshold value.
14. The charge protection device of claim 13, wherein the circuit parameters further comprise: the number of times of communication failure between the main board and the electricity meter;
the acquisition module is further configured to:
and determining the number of times of communication failure of the target time node according to the communication state of the mainboard and the electricity meter under each time node.
15. The charge protection device of claim 14, wherein the determining module is configured to:
in response to the first temperature being greater than the second temperature and the current collected by the fuel gauge being greater than or equal to a preset current, determining that the second connector is in a fault state;
and determining that the first connector is in a fault state in response to the first temperature being less than the second temperature and the number of times of communication failure being greater than or equal to a preset number of times.
16. The charge protection device of claim 11,
in the first charging mode, the determining module is further configured to:
determining the current charging times; wherein the current charging times are used for characterizing: the electronic equipment is connected with the charging equipment and receives the times of power supply of the charging equipment;
determining a voltage switching parameter according to the current charging times; the voltage switching parameter is used for representing a critical value of the electronic equipment which is switched from a constant current mode to a constant voltage mode in the charging process.
17. An electronic device, comprising:
a processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the charge protection method of any one of claims 1 to 10.
18. A non-transitory computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the charge protection method of any of claims 1 to 10.
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