CN106786912B - Head-mounted device charging protection method, electronic device charging protection method and device - Google Patents
Head-mounted device charging protection method, electronic device charging protection method and device Download PDFInfo
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Abstract
The invention discloses a charging protection method for head-mounted equipment, a charging protection method for electronic equipment and a device thereof, wherein the charging protection method for the head-mounted equipment comprises the following steps: the method comprises the steps that a power management chip of the head-mounted equipment is directly communicated with a charging plug of the head-mounted equipment, the connection condition of the charging plug is monitored by using the power management chip, and when the charging plug is monitored to be connected to an external power supply, an interrupt message is sent to a microprocessor of the head-mounted equipment; after receiving the interrupt message of the power management chip, the microprocessor acquires the current wearing state of the head-mounted device, and if the head-mounted device is in the wearing state, the microprocessor calculates the current value required by the normal operation of the head-mounted device and returns the current value to the power management chip for the normal operation of the head-mounted device, so that the danger of explosion and the like caused by overheating of a battery is avoided; if the power supply is not worn, determining that the current value in the normal charging state is returned to the power supply management chip; and the power management chip controls the charging plug to input current according to the current value returned by the microprocessor.
Description
Technical Field
The invention relates to the technical field of charging protection, in particular to a head-mounted device charging protection method, an electronic device charging protection method and an electronic device charging protection device.
Background
With the rapid development of the Virtual Reality (VR) industry, the head-mounted device is used by more and more users as a display platform of VR resources (pictures, videos, games, and the like). However, because the VR resources have high requirements for the processing capability of the device, and the processor of the device is required to operate at a high frequency, the device consumes a large amount of battery power, so that the device is often in a power-off state, and many users use the device while charging.
The battery can produce a large amount of heat when the equipment is charged and used, and can explode to a certain extent, and accidents happen to users carelessly in many times, so that the users can be greatly injured. Similarly, electronic devices such as mobile phones and tablet computers with large battery consumption also have the same problem. How to add a charging protection measure becomes a key point of the head-mounted device and even all electronic devices with large power consumption of batteries.
Disclosure of Invention
In view of the above problems, the present invention provides a method for protecting charging of a head-mounted device, a method for protecting charging of an electronic device, and an apparatus thereof, so as to solve the problem that the existing head-mounted device and electronic device generate a large amount of heat when being used by a user while charging, and are prone to causing risks such as explosion.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
in one aspect, the present invention provides a method for protecting charging of a head-mounted device, where the head-mounted device includes a microprocessor, a power management chip, a built-in battery, a charging plug, and a proximity sensor, the method including:
the power management chip is directly communicated with the charging plug, the power management chip is used for monitoring the connection condition of the charging plug, and when the charging plug is monitored to be connected to an external power supply, an interrupt message is sent to the microprocessor;
after receiving the interrupt message of the power management chip, the microprocessor acquires the current wearing state of the head-mounted equipment, and if the head-mounted equipment is in the wearing state, the microprocessor calculates the current value required by the normal operation of the head-mounted equipment and returns the current value to the power management chip; if the power supply is not worn, determining that the current value in the normal charging state is returned to the power supply management chip;
and the power supply management chip controls the charging plug to input current according to the current value returned by the microprocessor.
On the other hand, the invention also provides a charging protection method of the electronic equipment, wherein the electronic equipment comprises a built-in battery and a charging plug; the method comprises the following steps:
detecting whether the electronic equipment is used or not when the charging plug of the electronic equipment is monitored to be connected with an external power supply;
if the charging plug is used, calculating a current value required by normal operation of the electronic equipment according to the using state of the electronic equipment, and controlling the charging plug to input current according to the current value required by the normal operation of the electronic equipment;
if the current value is not used, respectively acquiring a maximum input current value supported by the charging plug and a maximum charging current value allowed by the built-in battery, determining a smaller current value from the two acquired current values, and controlling the charging plug to input current according to the smaller current value.
In another aspect, the present invention further provides a charging protection device for an electronic device, where the electronic device includes a built-in battery and a charging plug; the device comprises:
the usage detection unit is used for detecting whether the electronic equipment is used or not when the fact that a charging plug of the electronic equipment is connected with an external power supply is monitored;
the first current control unit is used for calculating a current value required by normal operation of the electronic equipment according to the using state of the electronic equipment when the electronic equipment is used, and controlling the charging plug to input current according to the current value required by the normal operation of the electronic equipment;
and the second current control unit is used for respectively acquiring the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery when the electronic equipment is not used, determining a smaller current value from the two acquired current values, and controlling the charging plug to input current according to the smaller current value.
The invention has the beneficial effects that: the invention provides a charging protection method of a head-mounted device.A microprocessor returns a specific current value to a power management chip according to the wearing state of the head-mounted device, if the head-mounted device is in the wearing state, the microprocessor calculates the current value required by the normal operation of the head-mounted device and returns the current value to the power management chip, and if the head-mounted device is not in the wearing state, the microprocessor determines that the current value in the normal charging state returns to the power management chip; the power management chip controls the charging plug to input current according to the current value returned by the microprocessor, when the charging plug is worn, the input current is small, no current flows into the built-in battery, the danger of explosion caused by overheating of the battery is avoided, and meanwhile the service life of the battery is prolonged; when the device is not worn, the input current is relatively larger, and the device can be charged quickly.
Further, the charging protection method and device for the electronic equipment provided by the invention detect whether the electronic equipment is used when a charging plug of the electronic equipment is monitored to be connected with an external power supply, if the electronic equipment is used, a current value required by normal operation of the electronic equipment is calculated, the charging plug is controlled to input current according to the current value required by the normal operation of the electronic equipment, and at the moment, the input current is small and no current flows into a built-in battery, so that the danger of explosion caused by overheating of the battery is avoided, and the service life of the battery is prolonged; if the charging plug is not used, respectively obtaining a maximum input current value supported by the charging plug and a maximum charging current value allowed by the built-in battery, determining a smaller current value from the two obtained current values, controlling the charging plug to input current according to the smaller current value, and avoiding the current from exceeding the upper limit of the current allowed by the charging plug or the battery while ensuring that the input current is as large as possible, wherein the input current is larger than that of the electronic equipment when the electronic equipment is used, so that the equipment can be charged quickly.
Drawings
Fig. 1 is a flowchart of a charging protection method for a headset according to a first embodiment of the present invention;
fig. 2 is a logic block diagram of a charging protection method for a headset according to a first embodiment of the present invention;
fig. 3 is a flowchart of a charging protection method for an electronic device according to a second embodiment of the present invention;
fig. 4 is a schematic diagram of a charging protection device of an electronic device according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example one
An embodiment of the present invention provides a charging protection method for a head-mounted device, where the head-mounted device includes a microprocessor, a power management chip, a built-in battery, a charging plug, and a proximity sensor, as shown in fig. 1, the method includes:
step S110: the power management chip is directly communicated with the charging plug, the power management chip is used for monitoring the connection condition of the charging plug, and when the charging plug is monitored to be connected to an external power supply, an interrupt message is sent to the microprocessor;
step S120: after receiving the interrupt message of the power management chip, the microprocessor acquires the current wearing state of the head-mounted equipment, and if the head-mounted equipment is in the wearing state, the microprocessor calculates the current value required by the normal operation of the head-mounted equipment and returns the current value to the power management chip; if the power supply is not worn, determining that the current value in the normal charging state is returned to the power supply management chip;
step S130: and the power supply management chip controls the charging plug to input current according to the current value returned by the microprocessor.
If the head-mounted device is in a wearing state, the charging plug inputs current according to a current value required by normal operation of the head-mounted device, the power management chip completely uses the input current for normal operation of the head-mounted device, no battery flows to the built-in battery, and therefore a user can continue to use the device in a charging process, danger such as explosion caused by overheating of the built-in battery is avoided, and meanwhile the service life of the battery is prolonged.
And if the head-mounted equipment is not worn, the charging plug inputs current according to the current value in the normal charging state. At this time, if the head-mounted device is in a shutdown state, the power management chip uses all the input current for charging the built-in battery; if the head-mounted device is in a standby state, the power management chip distributes current required by standby operation of the head-mounted device for standby operation of the electronic device, and the rest current is distributed to the built-in battery for charging, so that the input current of the head-mounted device is increased relative to the wearing state, and the device can be charged quickly. In this embodiment of the present invention, if the power management chip is in the unworn state in step S120, the determining that the current value in the normal charging state is returned to the power management chip includes:
the microprocessor respectively obtains the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery, determines a smaller current value from the obtained two current values to be used as a current value in a normal charging state to be returned to the power management chip, ensures that the input current is as large as possible, avoids the current from exceeding the upper limit of the current allowed by the charging plug or the battery, and is convenient for the equipment to carry out quick charging with large current.
In the embodiment of the present invention, the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery are both greater than the current value required by the normal operation of the head-mounted device.
The following is a concrete explanation of Table 1.
TABLE 1
In table 1, if the microprocessor obtains that the head-mounted device is in a worn state, it determines that the current value required for normal operation of the head-mounted device is 0.5A, and returns the current value to the power management chip, and the power management chip controls the charging plug to input current according to the current value of 0.5A.
And if the microprocessor acquires that the head-mounted equipment is in an unworn state, when the maximum input current value supported by the charging plug is 4A and the maximum charging current value allowed by the built-in battery is 3A, returning the maximum charging current value 3A allowed by the built-in battery to the power management chip as the current value in a normal charging state. And when the maximum input current value supported by the charging plug is 2A and the maximum charging current value allowed by the built-in battery is 3A, returning the maximum input current value 2A supported by the charging plug to the power management chip as the current value in the normal charging state.
When the charging plug inputs current according to the current value of the normal charging state, if the head-mounted equipment is in the shutdown state, the power management chip completely uses the input current (3A or 2A in table 1) for charging the built-in battery; if the head-mounted device is in a standby state, the power management chip allocates the current required by the standby operation of the head-mounted device, namely the current value 0.3A in Table 1, for the standby operation of the electronic device, and allocates the rest current to the charging of the internal battery, for example, when the input current is 3A, the rest current of 2.7A is allocated to the charging of the internal battery, and when the input current is 2A, the rest current of 1.7A is allocated to the charging of the internal battery.
In an embodiment of the present invention, the method shown in fig. 1 further includes:
a proximity sensor is arranged on the head-mounted equipment close to the head of the user, the proximity sensor is used for detecting whether the head-mounted equipment is in a wearing state or an unworn state, and a detection result is sent to the microprocessor;
specifically, the proximity sensor detects whether an object is close to the proximity sensor within a preset distance;
and after receiving the interrupt message of the power management chip, the microprocessor judges according to the detection result sent by the proximity sensor to acquire the current wearing state of the head-mounted equipment.
The processor judges that the head-mounted equipment is in a wearing state when the proximity sensor detects that an object is close to the processor within a preset distance; and when the proximity sensor does not detect that an object is close to the proximity sensor within the preset distance, judging that the head-mounted equipment is not in a non-wearing state.
Taking two specific use cases as examples, when the head-mounted device is in a charging state and is not worn, the user wears the head-mounted device at the moment, the proximity sensor generates interruption, and when the head-mounted device is detected to be in a wearing state at the moment, the processor calculates a current value required by normal operation of the head-mounted device and returns the current value to the power management chip, and the power management chip controls the charging plug to input current according to the current value required by normal operation of the head-mounted device;
when the head-mounted equipment is in a charging state and worn, the user takes the head-mounted equipment off at the moment, the proximity sensor generates interruption, the head-mounted equipment is detected to be in an unworn state at the moment, the processor calculates a current value of the normal charging state of the head-mounted equipment and returns the current value to the power management chip, and the power management chip controls the charging plug to input current according to the current value of the normal charging state. Therefore, the charging protection function of the equipment can be realized only by arranging the proximity sensor on the head-mounted equipment and matching the proximity sensor with the microprocessor and the power management chip, and the hardware cost is low.
In summary, a logic block diagram of the charging protection method for the head-mounted device according to the first embodiment of the present invention is shown in fig. 2, where a power management chip is used to monitor a connection condition of a charging plug, that is, whether the charging plug is connected to an external power source, and when it is monitored that the charging plug is connected to the external power source, an interrupt message is sent to a microprocessor; after receiving the interrupt message of the power management chip, the microprocessor acquires the current wearing state of the head-mounted equipment, namely whether the head-mounted equipment is worn or not, and if the head-mounted equipment is in the wearing state, the microprocessor calculates the current value required by the normal operation of the head-mounted equipment and returns the current value to the power management chip; if the power supply is not worn, determining that the current value in the normal charging state is returned to the power supply management chip; and the power management chip controls the charging plug to input current according to the current value returned by the microprocessor.
In summary, in the charging protection method for the head-mounted device according to the first embodiment of the present invention, the microprocessor returns a specific current value to the power management chip according to the wearing state of the head-mounted device, if the head-mounted device is in the wearing state, the microprocessor calculates a current value required by normal operation of the head-mounted device and returns the current value to the power management chip, and if the head-mounted device is not in the wearing state, the microprocessor determines that the current value in the normal charging state is returned to the power management chip; the power management chip controls the charging plug to input current according to the current value returned by the microprocessor, when the charging plug is worn, the input current is small, no current flows into the built-in battery, the danger of explosion caused by overheating of the battery is avoided, and meanwhile the service life of the battery is prolonged; when the wearable device is worn, the input current of the head-mounted device is larger, and the device can be charged quickly.
Example two
The second embodiment of the invention provides a charging protection method for electronic equipment, wherein the electronic equipment comprises a built-in battery and a charging plug; as shown in fig. 3, the method includes:
step S210: detecting whether the electronic equipment is used or not when the charging plug of the electronic equipment is monitored to be connected with an external power supply;
in one embodiment of the present invention, the detecting whether the electronic device is being used includes:
when the electronic equipment is detected to be in a shutdown or standby state, judging that the electronic equipment is not used; and when the electronic equipment is detected to be in a non-power-off and non-standby state, judging that the electronic equipment is used.
Step S220: if the charging plug is used, calculating a current value required by normal operation of the electronic equipment according to the using state of the electronic equipment, and controlling the charging plug to input current according to the current value required by the normal operation of the electronic equipment;
step S230: if the charging plug is not used, respectively obtaining a maximum input current value supported by the charging plug and a maximum charging current value allowed by the built-in battery, determining a smaller current value from the two obtained current values, controlling the charging plug to input current according to the smaller current value, ensuring that the input current is as large as possible, avoiding the current from exceeding the upper limit of the current allowed by the charging plug or the battery, and facilitating the rapid charging of equipment with large current. .
If the electronic equipment is used, after the charging plug inputs current according to the current value required by the normal operation of the electronic equipment, the input current is all used for supplying the electronic equipment to the normal operation, no battery flows to the built-in battery, so that a user can continuously use the equipment in the charging process, the danger of explosion and the like caused by overheating of the built-in battery is avoided, and the service life of the battery is prolonged.
If the electronic equipment is not used, after the charging plug inputs current according to the smaller current value of the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery, at the moment, if the electronic equipment is in a shutdown state, all the input current is used for charging the built-in battery; if the electronic equipment is in a standby state, the current required by the standby operation of the electronic equipment is distributed to supply the standby operation of the electronic equipment, and the residual current is distributed to the built-in battery for charging, so that the input current is increased compared with the situation that the equipment is used, and the equipment is convenient to charge quickly.
In the embodiment of the present invention, the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery are both greater than the current value required by the normal operation of the electronic device.
EXAMPLE III
The third embodiment of the invention provides a charging protection device of electronic equipment, wherein the electronic equipment comprises a built-in battery and a charging plug; as shown in fig. 4, the charge protection device includes:
the usage detecting unit 110 is configured to detect whether the electronic device is being used when it is monitored that a charging plug of the electronic device is connected to an external power supply;
the first current control unit 120 is configured to calculate a current value required by normal operation of the electronic device according to a use state of the electronic device when the electronic device is used, and control the charging plug to input a current according to the current value required by the normal operation of the electronic device;
the second current control unit 130 is configured to, when the electronic device is not used, obtain a maximum input current value supported by the charging plug and a maximum charging current value allowed by the built-in battery, determine a smaller current value from the obtained two current values, control the charging plug to input current according to the smaller current value, ensure that the input current is as large as possible, and simultaneously avoid the current from exceeding an upper current limit allowed by the charging plug or the battery, so that the device can be charged quickly with a large current.
In the embodiment of the invention, the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery are both larger than the current value required by the normal operation of the electronic equipment.
In the embodiment of the present invention, the usage detecting unit 110 is specifically configured to determine that the electronic device is not used when detecting that the electronic device is in a shutdown state or a standby state; and when the electronic equipment is detected to be in a non-power-off or non-standby state, judging that the electronic equipment is used.
In summary, in the charging protection method and apparatus for an electronic device provided in the second to third embodiments of the present invention, when it is monitored that a charging plug of the electronic device is connected to an external power source, whether the electronic device is used is detected, if the electronic device is used, a current value required by normal operation of the electronic device is calculated, and the charging plug is controlled to input current according to the current value required by normal operation of the electronic device, where the input current is small and no current flows into a built-in battery, so as to avoid danger such as explosion caused by overheating of the battery, and to prolong the service life of the battery; if the current value is not used, the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery are respectively obtained, a smaller current value is determined from the two obtained current values, the charging plug is controlled to input current according to the smaller current value, and the input current is larger when the charging plug is used relative to equipment, so that the equipment can be charged quickly.
While the foregoing is directed to embodiments of the present invention, other modifications and variations of the present invention may be devised by those skilled in the art in light of the above teachings. It should be understood by those skilled in the art that the foregoing detailed description is for the purpose of better explaining the present invention, and the scope of the present invention should be determined by the scope of the appended claims.
Claims (6)
1. A method for protecting charging of a head-mounted device, the head-mounted device comprising a microprocessor, a power management chip, a built-in battery, a charging plug, and a proximity sensor, the method comprising:
the power management chip is directly communicated with the charging plug, the power management chip is used for monitoring the connection condition of the charging plug, and when the charging plug is monitored to be connected to an external power supply, an interrupt message is sent to the microprocessor;
after receiving the interrupt message of the power management chip, the microprocessor acquires the current wearing state of the head-mounted device, if the head-mounted device is in the wearing state, the microprocessor calculates the current value required by the normal operation of the head-mounted device and returns the current value to the power management chip, the charging plug inputs current according to the current value required by the normal operation of the head-mounted device, the power management chip uses all the input current for supplying the head-mounted device to the normal operation, and no battery flows to the built-in battery; if the head-mounted device is in a standby state, the power management chip distributes current required by standby operation of the head-mounted device, and the rest current is distributed to the built-in battery for charging;
the microprocessor respectively acquires a maximum input current value supported by the charging plug and a maximum charging current value allowed by the built-in battery, and determines a smaller current value from the acquired two current values to be used as a current value in a normal charging state to be returned to the power management chip;
the power management chip controls the charging plug to input current according to the current value returned by the microprocessor;
the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery are both larger than the current value required by the normal operation of the head-mounted equipment.
2. The method of claim 1, further comprising:
a proximity sensor is arranged on the head-mounted equipment close to the head of the user, the proximity sensor is used for detecting whether the head-mounted equipment is in a wearing state or an unworn state, and a detection result is sent to the microprocessor;
and after receiving the interrupt message of the power management chip, the microprocessor judges according to the detection result sent by the proximity sensor to acquire the current wearing state of the head-mounted equipment.
3. A charging protection method of an electronic device, the electronic device comprises a built-in battery and a charging plug; characterized in that the method comprises:
detecting whether the electronic equipment is used or not when the charging plug of the electronic equipment is monitored to be connected with an external power supply;
if the charging plug is used, calculating a current value required by normal operation of the electronic equipment according to the using state of the electronic equipment, controlling the charging plug to input current according to the current value required by the normal operation of the electronic equipment, and using all the input current for the normal operation of the electronic equipment, wherein no battery flows to the built-in battery;
if the electronic equipment is not used, respectively acquiring a maximum input current value supported by the charging plug and a maximum charging current value allowed by the built-in battery, determining a smaller current value from the two acquired current values, controlling the charging plug to input current according to the smaller current value, and if the electronic equipment is in a shutdown state, completely using the input current for charging the built-in battery; if the electronic equipment is in a standby state, distributing current required by standby operation of the electronic equipment, and distributing the residual current to a built-in battery for charging;
the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery are both larger than the current value required by the normal operation of the electronic equipment.
4. The method of claim 3, wherein the detecting whether the electronic device is being used comprises:
when the electronic equipment is detected to be in a shutdown or standby state, judging that the electronic equipment is not used; and when the electronic equipment is detected to be in a non-power-off and non-standby state, judging that the electronic equipment is used.
5. A charging protection device of an electronic device comprises a built-in battery and a charging plug; characterized in that the device comprises:
the usage detection unit is used for detecting whether the electronic equipment is used or not when the fact that a charging plug of the electronic equipment is connected with an external power supply is monitored;
the first current control unit is used for calculating a current value required by normal operation of the electronic equipment according to the using state of the electronic equipment when the electronic equipment is used, controlling the charging plug to input current according to the current value required by the normal operation of the electronic equipment, and using all the input current for the normal operation of the electronic equipment, wherein no battery flows to the built-in battery;
the second current control unit is used for respectively acquiring a maximum input current value supported by the charging plug and a maximum charging current value allowed by the built-in battery when the electronic equipment is not used, determining a smaller current value from the two acquired current values, controlling the charging plug to input current according to the smaller current value, and if the electronic equipment is in a shutdown state, using all the input current for charging the built-in battery; if the electronic equipment is in a standby state, distributing current required by standby operation of the electronic equipment, and distributing the residual current to a built-in battery for charging;
the maximum input current value supported by the charging plug and the maximum charging current value allowed by the built-in battery are both larger than the current value required by the normal operation of the electronic equipment.
6. The charging protection device of an electronic device according to claim 5, wherein the usage detection unit is specifically configured to determine that the electronic device is not used when detecting that the electronic device is in a shutdown state or a standby state; and when the electronic equipment is detected to be in a non-power-off or non-standby state, judging that the electronic equipment is used.
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| CN113013506B (en) * | 2019-12-19 | 2022-07-12 | 海信视像科技股份有限公司 | Head-mounted display equipment charging method, device and equipment |
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| CN103516004A (en) * | 2012-06-29 | 2014-01-15 | 联想(北京)有限公司 | Information processing method and device |
| CN104377783A (en) * | 2014-12-02 | 2015-02-25 | 青岛歌尔声学科技有限公司 | Charging control circuit and charging method |
| CN105119335A (en) * | 2015-09-01 | 2015-12-02 | 捷开通讯科技(上海)有限公司 | Charging control method |
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| CN106786912A (en) | 2017-05-31 |
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