CN113131591A

CN113131591A - Charging method of wireless charging system and protective shell

Info

Publication number: CN113131591A
Application number: CN201911405385.9A
Authority: CN
Inventors: 黄晓强; 刘宁; 周乾宇; 杨玉龙
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2021-07-16

Abstract

The application provides a charging method of a wireless charging system and a protective shell. The charging method comprises the step of detecting a wireless charging signal transmitted by the wireless charging equipment through a detection module. In response to the wireless charging signal detected by the detection module, the protective shell transmits a first signal to the electronic equipment through the first Bluetooth communication module. In response to the first signal, the electronic device presents first prompt information, and the first prompt information is used for prompting to wirelessly charge the electronic device or the protective shell. And responding to the first input of the user to the first prompt message, and transmitting a second signal to the protective shell by the electronic equipment through the second Bluetooth communication module. In response to the second signal, the protective case disconnects a signal path between the first charging coil and the first wireless charging management chip. The second charging coil receives a wireless charging signal of the wireless charging device, and the second battery is charged through the second wireless charging management chip. The charging method can improve the charging efficiency of the electronic equipment.

Description

Charging method of wireless charging system and protective shell

Technical Field

The present application relates to the field of electronic devices, and in particular, to a charging method for a wireless charging system and a protective case.

Background

Traditional cell-phone shell can add functional module such as warning light for satisfying the market demand usually, and these functional module need the power supply, and the cell-phone shell can be equipped with the battery and for the charging coil that the battery charges. When the cell-phone cover was located to the cell-phone shell, the charging coil of cell-phone shell can lead to the fact the influence to the normal wireless charging of cell-phone, leads to the charge efficiency decline of cell-phone.

Disclosure of Invention

The application provides a charging method of a wireless charging system and a protective shell, wherein the charging efficiency of electronic equipment can be improved.

In a first aspect, the present application provides a charging method for a wireless charging system. The wireless charging system comprises a protective shell and an electronic device. The protective shell can be sleeved on the outer side of the electronic device. The protective case includes a first charging coil. The device comprises a first wireless charging management chip, a detection module and a first Bluetooth communication module. The electronic equipment comprises a second charging coil, a second wireless charging management chip, a second Bluetooth communication module and a second battery. The second wireless charging management chip is connected between the second charging coil and the second battery.

The charging method comprises the following steps: and detecting a wireless charging signal transmitted by the wireless charging equipment through the detection module.

In one implementation, the wireless charging signal includes an alternating magnetic field. The detection module may be a detection coil. Further, the protective case includes a first processor. The first processor is electrically connected to the detection coil. The first processor acquires a voltage formed by the detection coil under the alternating magnetic field.

In one implementation, the wireless charging signal includes an alternating magnetic field. The detection module is a sensor. Further, the protective case includes a first processor. The first processor is electrically connected to the sensor. The first processor acquires the magnetic field intensity of the alternating magnetic field acquired by the sensor.

Responding to the wireless charging signal detected by the detection module, and transmitting a first signal to the electronic equipment by the protective shell through the first Bluetooth communication module.

In one implementation, the first processor is communicatively connected to the first bluetooth communication module. The first processor confirms whether the wireless charging signal detected by the detection module meets a preset condition or not. When the detected wireless charging signal meets a preset condition, the first processor transmits a first signal to the electronic equipment through the first Bluetooth communication module.

Responding to the first signal, the electronic equipment presents first prompt information, and the first prompt information is used for prompting to wirelessly charge the electronic equipment or the protective shell.

In one implementation, the electronic device includes a second processor and a display screen. The second processor is in communication connection with the second Bluetooth communication module. And the second processor receives the first signal through the second Bluetooth communication module. In addition, the second processor is electrically connected to the display screen. The second processor responds to the first signal and controls the display screen to present first prompt information.

In one implementation, the first prompt message includes an electronic device charging icon and a protective case charging icon. It can be understood that the first prompt information is set as the electronic device charging icon and the protective shell charging icon, so that a user can conveniently and quickly select a charging object. The charging method has better user experience.

And responding to the first input of the first prompt message by the user, and transmitting a second signal to the protective shell by the electronic equipment through the second Bluetooth communication module.

In one implementation manner, the second processor receives a first touch signal sent by the display screen, and sends a second signal to the first processor through the second bluetooth communication module. The first touch signal is a signal generated by the display screen when a user inputs the first prompt message.

In response to the second signal, the protective case disconnects a signal path between the first charging coil and the first wireless charging management chip.

In one implementation, the first processor receives the second signal. The first processor responds to the second signal and sends a first trigger signal to the switch module according to the second signal. The switch module disconnects a signal path between the first charging coil and the first wireless charging management chip according to the first trigger signal.

The second charging coil receives a wireless charging signal of the wireless charging device, and the second battery is charged through the second wireless charging management chip.

In one implementation, the wireless charging device is a charging cradle. The second wireless charging management chip of the electronic device is in an enabled state and is switched to an input state, that is, the second wireless charging management chip can receive the alternating current transmitted from the second charging coil.

Further, the second battery charging includes the second charging coil generating an alternating current under an alternating magnetic field. The second wireless charging management chip converts the alternating current into direct current, and the direct current is transmitted to the second battery.

It can be understood that, when the user selects the wireless charging device to charge the second battery of the electronic device, the protective case can disconnect the signal path between the first charging coil and the first wireless charging management chip. At this moment, the protective housing can not influence the normal charging of the electronic equipment, thereby ensuring that the electronic equipment can be charged quickly.

In addition, because the signal path between the first charging coil and the first wireless charging management chip is open, the alternating current generated by the first charging coil under the alternating magnetic field generated by the wireless charging device is almost zero. At this time, the energy of the wireless charging device is prevented from being largely lost.

In one implementation, the responding to the wireless charging signal detected by the detection module includes:

the voltage of the wireless charging signal detected by the detection module is larger than or equal to a preset first voltage threshold, or the magnetic field strength of the wireless charging signal detected by the detection module is larger than or equal to a preset magnetic field strength threshold.

In one implementation, when the detection module is a detection coil, the detection coil forms a voltage under the alternating magnetic field. The first processor acquires a voltage formed by the detection coil under the alternating magnetic field. The first processor confirms that the voltage is greater than or equal to a preset first voltage threshold.

In one implementation, when the detection module is a sensor, the sensor detects a magnetic field strength of the alternating magnetic field. The first processor obtains the magnetic field strength. The first processor confirms that the magnetic field strength is greater than or equal to a preset magnetic field strength threshold.

Through setting the preset condition to be greater than or equal to preset first voltage threshold, or for being greater than or equal to preset magnetic field intensity threshold, thereby simplify the protective housing obtains the mode of wireless charging signal. In other words, the manner of the wireless charging signal acquired by the protective shell is simple.

In one implementation, the protective case includes a switch module, and the switch module is connected between the first charging coil and the first wireless charging management chip.

In response to the second signal, the protective case disconnects a signal path between the first charging coil and the first wireless charging management chip through a switch module.

In one implementation, the first processor is connected to the switch module. The first processor receives the second signal. The first processor responds to the second signal and controls the switch module to be switched off according to the second signal.

It can be understood that, by disposing the switch module between the first charging coil and the first wireless charging management chip, the switch module is effectively used to disconnect the signal path between the first charging coil and the first wireless charging management chip. The mode is simple, and easy realization also is the structure of simplification the protective housing.

In one implementation, the protective case further includes a first battery and a functional module. The first battery is configured to supply power to the functional module. The functional module can be one or more of a key, an indicator light, a flash lamp or a fingerprint identification module.

It can be understood that the functional module is arranged on the protective shell, so that the functions of the protective shell are increased, and the user experience of the protective shell is improved.

In one implementation, the charging method further includes:

responding to a second input of the first prompt message by the user, transmitting a third signal to the protective shell by the electronic equipment through the second Bluetooth communication module, and enabling the second wireless charging management chip of the electronic equipment to be in a non-enabled state; it can be understood that the second wireless charging management chip is in a non-enabled state and in a non-operating state.

In one implementation, the first prompt message includes an electronic device charging icon and a protective case charging icon. And the second processor receives a second touch signal sent by the display screen and sends a third signal to the first processor. The third signal is a signal generated by the display screen when the protective shell charging icon is triggered.

In addition, the second processor sends the third signal to the first processor through the first bluetooth communication module and the second bluetooth communication module.

In response to the third signal, the protective shell turning on a signal path between the first charging coil and the first wireless charging management chip;

in one implementation, the first processor receives a third signal and sends a second trigger signal to the switch module according to the third signal. And the switch module conducts a signal path between the first charging coil and the first wireless charging management chip according to the second trigger signal.

Receiving a wireless charging signal of the wireless charging device through the first charging coil, and charging the first battery

In one embodiment, the first charging coil generates an alternating current under an alternating magnetic field generated by the wireless charging device. The first wireless charging management chip converts the alternating current into direct current, and the direct current is transmitted to the first battery.

It can be understood that, when the user selects the charging seat to charge the protective shell, the protective shell switches on a signal path between the first charging coil and the first wireless charging management chip, and the charging seat charges the protective shell.

In one implementation, after the first wireless charging management chip converts the alternating current into the direct current and transmits the direct current to the first battery, the charging method further includes:

the first processor obtains a voltage of the first battery.

When the first battery voltage is greater than or equal to a preset third voltage threshold, the first processor sends the first trigger signal to the switch module, and the switch module disconnects a signal path between the first charging coil and the first wireless charging management chip, wherein the preset third voltage threshold is greater than a preset second voltage threshold.

It can be understood that, when the first battery is in a full state, the first processor sends a first trigger signal to the switch module to cause the switch module to disconnect a signal path between the first charging coil and the first wireless charging management chip. At this time, the wireless charging device no longer charges the first battery of the protective case. Therefore, when the first battery is in a full-charge state, the first charging coil can not generate alternating current again to cause current loss of the charging seat.

In a second aspect, the present application provides a charging method for a wireless charging system. The wireless charging system comprises a protective shell and an electronic device. The protective shell can be sleeved on the outer side of the electronic device. The protective housing includes a first charging coil and a first wireless charging management chip. The electronic equipment comprises a second charging coil, a second wireless charging management chip and a second battery. The second wireless charging management chip is connected between the second charging coil and the second battery.

The charging method comprises the following steps:

the second charging coil is coupled with a wireless charging signal transmitted by the wireless charging device.

In one implementation, the wireless charging device includes a charging cradle. In addition, the charging dock is energized and generates an alternating magnetic field. The second charging coil of the electronic device generates an alternating current under an alternating magnetic field.

The electronic equipment charges the second battery according to the wireless charging signal, wherein a signal path between a first charging coil of the protective shell and the first wireless charging management chip is disconnected.

In one implementation, the second wireless charging management chip of the electronic device converts the alternating current into a direct current, and the direct current is transmitted to the second battery.

It is understood that, when the wireless charging device charges the second battery of the electronic device, the protective case can disconnect a signal path between the first charging coil and the first wireless charging management chip. At this moment, the protective housing can not influence the normal charging of the electronic equipment, thereby ensuring that the electronic equipment can be charged quickly.

In addition, because the path between the first charging coil and the first wireless charging management chip is open, the alternating current generated by the first charging coil under the alternating magnetic field generated by the charging coil is almost zero. At this time, the energy of the wireless charging device is prevented from being largely lost.

In one implementation, the protective case further includes a first battery and a functional module. The first battery is configured to supply power to the functional module. The functional module can be at least one of a key, an indicator light, a flash lamp or a fingerprint identification module.

In one implementation, the protective case further includes a first bluetooth communication module. The electronic equipment further comprises a second Bluetooth communication module. The functional module is a key.

Receiving a first operation acting on the key;

it will be appreciated that the keys are arranged to be responsive to user manipulation to effect corresponding key functions. The first operation may be pressing, sliding, rotating, or touching. The first operation corresponds to a key type. For example, when the key is a slide type key. The first operation is a slide.

The protective shell transmits a first operation signal to the electronic equipment through the first Bluetooth communication module, wherein the first operation signal is used for indicating the first operation;

it is understood that the first processor is configured to generate an operation signal after the key and the first processor form a signal path, and to transmit the operation signal applied to the key to the electronic device.

In response to the first operation signal, the electronic device performs a second operation.

It can be understood that, by providing the function key on the protective shell, so that the function key serves as a signal input end of the electronic device, the first bluetooth communication module and the second bluetooth communication module transmit a key event acting on the key to the electronic device, and the electronic device responds to the key event. At this time, the outer surface of the electronic device does not need to be provided with more keys, that is, the appearance of the electronic device is simpler.

In one implementation, the protective case further includes a first bluetooth communication module. The electronic equipment further comprises a second Bluetooth communication module.

The charging method further comprises:

the electronic equipment sends a second signal to the protective shell through the second Bluetooth communication module;

in one embodiment, the electronic device includes a second processor. The second processor generates a second signal. And the second processor sends a second signal to the protective shell through the second Bluetooth communication module.

It can be understood that, a second signal is sent to the protective shell by the electronic device, and the protective shell is caused to disconnect a signal path between the first charging coil and the first wireless charging management chip according to the second signal, so as to improve the interactivity between the electronic device and the protective shell.

In one implementation, the protective case further includes a detection module;

the charging method further comprises:

detecting a wireless charging signal transmitted by wireless charging equipment through the detection module;

in one implementation, the wireless charging signal includes an alternating magnetic field. The detection module is a detection coil. Further, the protective case includes a first processor. The first processor is electrically connected to the detection coil. The first processor acquires a voltage formed by the detection coil under the alternating magnetic field.

In one implementation, the wireless charging signal is an alternating magnetic field. The detection module is a sensor. Further, the protective case includes a first processor. The first processor is electrically connected to the sensor. The first processor acquires the magnetic field intensity of the alternating magnetic field acquired by the sensor.

Responding to a wireless charging signal detected by the detection module, and transmitting a first signal to the electronic equipment by the protective shell through the first Bluetooth communication module;

In response to the first signal, the electronic equipment presents first prompt information, and the first prompt information is used for prompting to wirelessly charge the electronic equipment or the protective shell;

In response to a first input of the first prompt message by a user, the electronic device generates a second signal.

It can be understood that, through the above manner, the wireless charging device can charge the electronic device according to the selection of the user, thereby improving the user experience of the wireless charging system. In addition, the controllability of the wireless charging device is better.

In one implementation, in responding to a wireless charging signal detected by the detection module, the method includes:

the voltage of the wireless charging signal detected by the detection module is greater than or equal to a preset first voltage threshold, or the magnetic field intensity of the wireless charging signal detected by the detection module is greater than or equal to a preset magnetic field intensity threshold.

In a third aspect, the present application provides a charging method for a wireless charging system. The wireless charging system comprises a protective shell and an electronic device. The protective case includes a first charging coil. A first wireless charging management chip and a first battery. The first wireless charging management chip is connected between the first charging coil and the first battery. It is understood that the first battery may be configured to provide power to the first wireless charge management chip. The electronic equipment comprises a second charging coil, a second wireless charging management chip and a second battery. The second wireless charging management chip is connected between the second charging coil and the second battery. It is understood that the second battery may be configured to provide power to the second wireless charge management chip.

The charging method comprises the following steps: coupling, by the first charging coil, a wireless charging signal emitted by the second charging coil;

in one embodiment, the wireless charging signal emitted by the second charging coil comprises: the second battery transmits direct current and transmits the direct current to the second wireless charging management chip.

The second wireless charging management chip converts the direct current into alternating current, and the alternating current is transmitted to the second charging coil.

The second charging coil generates a first alternating magnetic field under alternating current.

In one embodiment, coupling the first charging coil with the wireless charging signal emitted by the second charging coil comprises:

the protective case includes a first processor. The first processor is in communication connection with the first wireless charging management chip.

The first processor obtains a voltage of the first battery.

Specifically, the first wireless charging management chip obtains a voltage of the first battery. The first wireless charging management chip sends the electric signal with the voltage to the first processor. The first processor receives the electrical signal and obtains a voltage from the electrical signal. The first processor confirms that the voltage of the first battery is smaller than or larger than a preset second voltage threshold value. In other embodiments, the first processor may also directly obtain the voltage of the first battery. Further, after the first wireless charge management chip acquires the voltage of the first battery. And the first wireless charging management chip confirms the electric quantity according to the voltage. The first wireless charging management chip sends the electric signal with the electric quantity to the first processor. The first processor receives the electrical signal and obtains the electrical quantity from the electrical signal. In other embodiments, the first processor may also directly obtain the power of the first battery. The first processor confirms that the electric quantity of the first battery is smaller than or larger than a preset first electric quantity threshold value. The first processor controls the switch to switch on a signal path between the first wireless charging management chip and the first charging coil.

The protective shell charges the first battery according to the wireless charging signal, wherein a signal path between the first wireless charging management chip and the first charging coil is conducted.

In one embodiment, the first charging coil generates a first alternating current under a first alternating magnetic field, and the first alternating current is transmitted to the first wireless charging management chip. The first wireless charging management chip converts the first alternating current into a first direct current to charge the first battery.

When the voltage of the first battery is larger than a preset second voltage threshold value, or the electric quantity of the first battery is larger than a preset first electric quantity threshold value, the protective shell disconnects a signal path between the first wireless charging management chip and the first charging coil.

In one embodiment, the first processor determines that the voltage of the first battery is greater than a preset second voltage threshold, or the electric quantity of the first battery is greater than a preset first electric quantity threshold. The first processor controls the signal path between the first wireless charging management chip and the first charging coil to be disconnected.

In addition, through the electronic equipment to the protective housing charges to when the user does not wear wireless charging equipment on one's body, the electronic equipment can be right the protective housing charges, and then avoids the protective housing can not be used because of often taking place no electric quantity or the electric quantity is less.

In one implementation, the protection shell charges the first battery according to the wireless charging signal, wherein a signal path between the first wireless charging management chip and the first charging coil is conductive, including: in response to a first operation of a user, the electronic device sends a second signal to the protective shell;

in one implementation, a first processor sends a first signal to a second processor through a first bluetooth communication module and a second bluetooth communication module;

the second processor responds to the first signal and controls a display screen of the electronic equipment to display a charging icon of the protective shell;

the second processor receives a first touch signal sent by the display screen and sends a second signal to the first processor;

in response to the second signal, the protective shell communicates a signal path between the first wireless charging management chip and the first charging coil;

in one embodiment, the first processor communicates a signal path between the first wireless charging management chip and the first charging coil in response to the second signal;

the protective shell converts the wireless charging signal into a direct current signal;

the protective shell transmits the direct current signal to the first battery through a signal path between the first wireless charging management chip and the first charging coil.

It can be understood that, through above-mentioned mode, electronic equipment can charge the protective housing according to user's selection to improve wireless charging system's user experience nature. In addition, the controllability of the wireless charging device is better.

In one implementation, after the protective shell transmits the dc signal to the first battery through a signal path between the first wireless charging management chip and the first charging coil, the charging method further includes:

detecting the voltage or the electric quantity of the first battery;

in one embodiment, the first processor is communicatively coupled to the first wireless charging management chip. The first wireless charging management chip acquires the voltage of the first battery. The first wireless charging management chip sends the electrical signal with the voltage to the first processor. The first processor receives the electrical signal and derives a voltage from the electrical signal. In other embodiments, the first processor may also directly obtain the voltage of the first battery.

In one embodiment, the first processor presets an acquisition period. The first processor acquires the voltage of the first battery once in the acquisition period. For example, the acquisition period is ten minutes. At this time, the first processor acquires the voltage of the first battery once every ten minutes.

In one embodiment, the first processor may also obtain the power of the first battery. Specifically, the first wireless charging management chip obtains the voltage of the first battery. In addition, the first wireless charging management chip identifies the electric quantity of the first battery according to the voltage. The first wireless charging management chip sends the signal with the electric quantity to the first processor. The first processor receives the signal and obtains the electrical quantity from the signal.

When the voltage of the first battery is greater than a preset third voltage threshold value, or the electric quantity of the first battery is greater than a preset second electric quantity threshold value, the protective shell disconnects a signal path between the first wireless charging management chip and the first charging coil. And the preset second electric quantity threshold value is larger than the preset first electric quantity threshold value.

It is understood that the preset third voltage threshold or the preset second power threshold is a parameter value pre-stored in the first processor.

In one embodiment, the first processor controls the signal path between the first wireless charging management chip and the first charging coil to be disconnected.

It can be understood that, when the first battery is in a full state, the protective case disconnects the signal path between the first wireless charging management chip and the first charging coil. At this point, the electronic device no longer charges the first battery of the protective case. Therefore, when the first battery is in a full-charge state, the first charging coil can not cause current loss of the second battery due to the fact that alternating current is generated again.

In one implementation, the protective case includes a switch module. The switch module is connected between the first charging coil and the first wireless charging management chip.

The protective shell is connected or disconnected with a signal path between the first wireless charging management chip and the first charging coil through the switch module.

In one embodiment, the switch module receives a first trigger signal sent by the first processor. The switch module disconnects a signal path between the first wireless charging management chip and the first charging coil. And the switch module receives a second trigger signal sent by the first processor. The switch module is used for switching on a signal path between the first wireless charging management chip and the first charging coil.

In one implementation, the protective case further includes a functional module. The first battery is configured to supply power to the functional module. The functional module can be at least one of a key, an indicator light, a flash lamp or a fingerprint identification module.

Receiving a first operation acting on the key;

it is understood that the first processor is used for generating an operation signal after the key and the first processor form a signal path, and sending the operation signal acting on the key to the electronic equipment

It can be understood that, by providing the key on the protective shell, so that the key serves as a signal input end of the electronic device, the first bluetooth communication module and the second bluetooth communication module transmit a key event acting on the key to the electronic device, and the electronic device responds to the key event. At this time, the outer surface of the electronic device does not need to be provided with more keys, that is, the appearance of the electronic device is simpler.

In addition, the keys of the protective shell are used as the signal input end of the electronic equipment, so that the interactivity of the wireless charging system is improved, and the user experience of the wireless charging system is further improved.

In a fourth aspect, the present application provides a charging method for a wireless charging system. The wireless charging system comprises a protective shell and an electronic device. The protective shell can be sleeved on the outer side of the electronic device. The protective case includes a first charging coil. The device comprises a first wireless charging management chip, a detection module and a first Bluetooth communication module. The electronic equipment comprises a second charging coil, a second wireless charging management chip, a second Bluetooth communication module and a second battery. The second wireless charging management chip is connected between the second charging coil and the second battery.

And detecting a wireless charging signal transmitted by the wireless charging equipment through the detection module.

In one implementation, the second processor receives a second touch signal sent by the display screen, and sends a third signal to the first processor. The third signal is a signal generated by the display screen when the protective shell charging icon is triggered.

It can be understood that, when the user selects the charging seat to charge the protective shell, the protective shell switches on a signal path between the first charging coil and the first wireless charging management chip, and the charging seat charges the protective shell

Responding to the third signal, the protective shell conducts a signal path between the first charging coil and the first wireless charging management chip through a switch module.

In one implementation, the first processor is connected to the switch module. The first processor receives the third signal. The first processor responds to the third signal and controls the switch module to be switched off according to the third signal.

It can be understood that, by disposing the switch module between the first charging coil and the first wireless charging management chip, the switch module is effectively used to conduct the signal path between the first charging coil and the first wireless charging management chip. The mode is simple, and easy realization also is the structure of simplification the protective housing.

the first processor obtains a voltage of the first battery.

Receiving a first operation acting on the key; it will be appreciated that the keys are arranged to be responsive to user manipulation to effect corresponding key functions. The first operation may be pressing, sliding, rotating, or touching. The first operation corresponds to a key type. For example, when the key is a slide type key. The first operation is a slide.

In a fifth aspect, the present application provides a charging method for a wireless charging system. The wireless charging system comprises a protective shell, electronic equipment and a charging seat. The protective shell can be sleeved outside the electronic equipment; the protective housing includes first charging coil, switch module and first wireless management chip that charges. The switch module is connected between the first charging coil and the first wireless charging management chip.

The electronic equipment comprises a second charging coil, a second wireless charging management chip and a second battery. The second wireless charging management chip is connected between the second charging coil and the second battery; the charging stand comprises a base coil.

The charging method comprises the following steps: the base coil is electrified and generates an alternating magnetic field;

it will be appreciated that when the charging cradle is in the energised state, an alternating current is transmitted to the base coil. The base coil generates a second alternating magnetic field.

The switch module is responsive to a first trigger signal or a first user operation. The switch module disconnects a signal path between the first charging coil and the first wireless charging management chip.

The second wireless charging management chip responds to the first control signal, and the second wireless charging management chip is switched to a state capable of sending alternating current to the second charging coil;

the second charging coil generates a first alternating current under the alternating magnetic field;

the second wireless charging management chip converts the first alternating current into a first direct current, and the first direct current is transmitted to the second battery.

It is understood that the switch module of the protective case can be automatically turned off when the user selects the charging dock to charge the electronic device. At this moment, when the charging seat charges electronic equipment, the protective housing can not influence electronic equipment's normal charging to guarantee that electronic equipment can charge fast.

In addition, because the switch module disconnects the signal path between the first charging coil and the first wireless charging management chip, the alternating current generated by the first charging coil under the second alternating magnetic field generated by the charging coil is almost zero. In other words, the loss of the second alternating magnetic field generated by the charging coil by the protective shell is almost zero, i.e. the energy loss of the base coil is low.

In one implementation, the protective case further includes a first battery electrically connected to the first wireless charging management chip; the charging method further comprises: the second wireless charging management chip responds to a second control signal, and the second wireless charging management chip is in an disabled state; the switch module responds to a second trigger signal or second user operation, and the switch module conducts a signal path between the first charging coil and the first wireless charging management chip; the first charging coil generates a second alternating current under the alternating magnetic field; the first wireless charging management chip converts the second alternating current into a second direct current, and the second direct current is transmitted to the first battery.

In this implementation, when the user selects the charging seat to charge the protective case, the switch module of the protective case can be automatically turned on, and the second wireless charging management chip of the electronic device is in an disabled state. At this moment, when the charging seat charges the protective housing, the electronic equipment can not influence the normal charging of protective housing to guarantee that the protective housing can charge fast.

In one implementation, after the second dc current is transmitted to the first battery, the charging method further includes: the first controller acquires a charging voltage of the first battery; when the charging voltage is greater than or equal to a second threshold value, the first controller controls the switch module to be switched off.

It can be understood that when the first battery is in a full state, the first processor sends a first trigger signal to the switch module to cause the switch module to disconnect a signal path between the first charging coil and the first wireless charging management chip. At this point, the electronic device no longer charges the first battery of the protective case. Therefore, when the first battery is in a full-charge state, the first charging coil can not cause current loss of the second battery due to the fact that alternating current is generated again.

In one implementation, the protective case includes a first controller and a detection coil, the first controller is electrically connected to the detection coil, the electronic device includes a display screen and a second controller electrically connected to the display screen, and the second controller is communicatively connected to the first controller; the charging method further comprises: the first controller acquires a detection voltage, wherein the detection voltage is a voltage formed by the detection coil under an alternating magnetic field generated by the base coil; when the detection voltage is greater than or equal to a third threshold, the first controller sends a first electric signal to the second controller; the second controller responds to the first electric signal and controls the display screen to display an electronic equipment charging icon and a protective shell charging icon; the second controller receives a first touch signal sent by the display screen, sends a second signal to the first controller, and sends the first control signal to the second wireless charging management chip; the first touch signal is a signal generated by the display screen when the electronic equipment charging icon is triggered; the first controller receives a second signal and sends the first trigger signal to the switch module according to the second signal; the second controller receives a second touch signal sent by the display screen, sends a third signal to the first controller, and sends a second control signal to the second wireless charging management chip; the second touch signal is a signal generated by the display screen when the protective shell charging icon is triggered; and the first controller receives a third signal and sends the second trigger signal to the switch module according to the third signal.

It can be understood that, through the above manner, the charging stand can charge the electronic device according to the selection of the user, thereby improving the user experience of the wireless charging system. In addition, the controllability of the wireless charging device is better.

In one implementation manner, the switch module includes a first MOS transistor, a second MOS transistor, a first resistor, a second resistor, a third resistor, and a fourth resistor, a first end of the first resistor and a first end of the second resistor are connected to each other and are commonly connected to the first controller, a second end of the first resistor is grounded, a second end of the second resistor is connected to the gate of the first MOS transistor, a gate of the first MOS transistor is connected to a first end of the third resistor, a drain of the first MOS transistor is connected to the first battery through a low-voltage-difference linear regulator, a second end of the third resistor is connected to a first end of the fourth resistor, a second end of the third resistor and a first end of the fourth resistor are commonly connected to the gate of the second MOS transistor, a second end of the fourth resistor is grounded, and a gate of the second MOS transistor is connected to the first charging coil, the drain electrode of the second MOS tube is connected to the first wireless charging management chip; the first trigger signal is a high level signal, and the second trigger signal is a low level signal.

It can be understood that the switch module is simple in structure and easy to manufacture. At this time, when the switch module is applied to the protective case, the structure of the protective case can be simplified. In addition, when the switch module is matched with the first processor, the first processor can control the switch module to be switched off or switched on in a simpler mode.

In one embodiment, the switch module further includes a first key and a switch, the first key is connected to the switch, and the switch is connected between the first charging coil and the first wireless charging management chip;

the first user operation is a sliding operation, a pressing operation, or a rotating operation for the first key.

It can be understood that the switch module is simple in structure and easy to manufacture. At this time, when the switch module is applied to the protective case, the structure of the protective case can be simplified. In addition, the switch module is switched on or off through the operation of a user. At this time, the switch module has better interactivity with the user. At this moment, when this switch module setting is between first charging coil and the first wireless management chip that charges, switch module can control first charging coil and the first wireless management chip that charges to switch on or break off with simpler mode.

In one implementation, the protective housing includes a first bluetooth communication module, the electronic device includes a second bluetooth communication module, and the protective housing is connected to the electronic device through the first bluetooth communication module and the second bluetooth communication module.

It can be understood that the protective shell is in communication connection with the electronic device through the first bluetooth communication module and the second bluetooth communication module, so that the interactivity between the protective shell and the electronic device is improved.

In a sixth aspect, the present application provides a protective case. The protective housing is used for being sleeved on the outer side of the electronic equipment. The protective housing includes first charging coil, switch module, first wireless management chip and the first battery that charges. The switch module is connected between the first charging coil and the first wireless charging management chip. The first battery is connected to the first wireless charging management chip. The switch module is used for disconnecting or connecting a signal path between the first charging coil and the first wireless charging management chip.

When a signal path between the first charging coil and the first wireless charging management chip is conducted through the switch module, the first charging coil can be coupled to a wireless charging signal, and the first battery is charged according to the wireless charging signal; when the electronic equipment is arranged on the protective shell in a sleeved mode, and the electronic equipment provided with the protective shell is charged through the wireless charging equipment, a signal path between the first charging coil and the first wireless charging management chip is disconnected.

It can be understood that, by disposing the switch module between the first charging coil and the first wireless charging management chip, when the wireless charging device charges the second battery of the electronic device, the protective shell can disconnect the signal path between the first charging coil and the first wireless charging management chip. At this moment, the protective housing can not influence the normal charging of the electronic equipment, thereby ensuring that the electronic equipment can be charged quickly.

In addition, when the signal path between the first charging coil and the first wireless charging management chip is switched on through the switch module, the first charging coil can be coupled to a wireless charging signal, and the first battery is charged according to the wireless charging signal. At this time, the protective case can realize a charging function.

In one implementation, the functional module is a key. The protective case also includes a first processor. The key is electrically connected to the first processor.

The key is used for receiving user input so as to realize a corresponding key function; the first processor is used for sending a first operation signal acting on the key to the electronic equipment so as to enable the electronic equipment to respond to the first operation signal. In other words, the first processor is configured to generate a first operation signal after the key and the first processor form a signal path, and send the first operation signal applied to the key to the electronic device, so that the electronic device responds to the first operation signal.

In one implementation, the protective housing includes a first bluetooth communication module, and the protective housing communicates with the electronic device through the first bluetooth communication module.

In one implementation, the protective case further includes a first processor, the switch module includes a first MOS transistor, a second MOS transistor, a first resistor, a second resistor, a third resistor, and a fourth resistor, a first end of the first resistor and a first end of the second resistor are connected to each other and are commonly connected to the first processor, a second end of the first resistor is grounded, a second end of the second resistor is connected to the gate of the first MOS transistor, a gate of the first MOS transistor is connected to a first end of the third resistor, a drain of the first MOS transistor is connected to the first battery through a low-voltage-difference linear regulator, a second end of the third resistor is connected to a first end of the fourth resistor, and a second end of the third resistor and a first end of the fourth resistor are commonly connected to the gate of the second MOS transistor, a second end of the fourth resistor is grounded, the grid electrode of the second MOS tube is connected to the first charging coil, and the drain electrode of the second MOS tube is connected to the first wireless charging management chip.

In one implementation, the number of the second MOS transistors is at least two, and at least two of the second MOS transistors are arranged in parallel. It can be understood that, by connecting at least two second MOS transistors in parallel, the impedance between the connection position of the gate of the second MOS transistor and the first charging coil and the position of the drain of the second MOS transistor and the first wireless charging management chip is significantly lower.

In one implementation manner, the switch module further includes a first key and a switch, the first key is connected to the switch, and the switch is connected between the first charging coil and the first wireless charging management chip; the first key is used for responding to the first user operation and disconnecting the switch or responding to the second user operation and connecting the switch.

In one implementation, the protection case includes a first processor and a detection coil, the first processor is connected to the switch module, and the detection coil is electrically connected to the first processor. The detection coil is used for generating alternating current under the alternating magnetic field.

In addition, in response to the wireless charging signal detected by the detection coil, a signal path between the first charging coil and the first wireless charging management chip is disconnected through the switch module.

It can be understood that the wireless charging signal transmitted by the wireless charging device is detected through the detection coil, so that a mode of simply judging whether a user needs to charge the electronic device or the protective shell is provided, the automation of the protective shell is further improved, and the user experience of the protective shell is improved.

In one implementation, the number of the detection coils is at least two, and the at least two detection coils are located at the periphery of the first charging coil.

It can be understood that at least two detection coils are arranged and are located at the periphery of the first charging coil, so that when the protective shell and the electronic device approach to the alternating magnetic field from different directions, the detection coils can both generate voltage quickly, and when the voltage is greater than or equal to a preset first voltage threshold value, the switch module is controlled to be switched off quickly, so that the electronic device does not charge the protective shell any more.

In one implementation, at least two of the detection coils are disposed around the first charging coil.

In one implementation, the protective case includes a first processor and a sensor. The sensor is used for detecting the magnetic field intensity. Disconnecting, by the switch module, a signal path between the first charging coil and the first wireless charging management chip in response to the magnetic field strength detected by the sensor.

It can be understood that the magnetic field intensity outside the protective shell is detected through the sensor, so that a mode of simply judging whether a user needs to charge the electronic equipment or the protective shell can be provided, the automation of the protective shell is further improved, and the user experience of the protective shell is improved.

In one implementation, the sensor includes a hall sensor or a compass.

It can be understood that the hall sensor and the compass can accurately detect the magnetic field intensity of the alternating magnetic field generated by the wireless charging device, so that the switch module can be accurately switched to the off state or the on state.

Drawings

Fig. 1 is a schematic structural diagram of an implementation manner of a wireless charging system provided in an embodiment of the present application;

fig. 2 is an exploded schematic view of the wireless charging system shown in fig. 1;

fig. 3 is a schematic structural diagram of one embodiment of a protective case of the wireless charging system shown in fig. 1;

FIG. 4 is a schematic structural view of the shell of the protective case of FIG. 3;

FIG. 5 is a schematic view of a portion of the protective case of FIG. 3;

fig. 6 is a schematic structural diagram of an electronic device of the wireless charging system shown in fig. 1;

fig. 7 is a schematic flow chart diagram of one embodiment of a charging method of the wireless charging system shown in fig. 1;

FIG. 8 is a schematic diagram of one embodiment of the wireless charging system of FIG. 1 during a charging process;

fig. 9 is a schematic flow chart diagram of another embodiment of a charging method of the wireless charging system shown in fig. 1;

fig. 10 is a schematic flow chart diagram of still another embodiment of a charging method of the wireless charging system shown in fig. 1;

fig. 11 is a schematic diagram of another embodiment of the wireless charging system shown in fig. 1 during a charging process;

fig. 12 is a schematic structural view of another embodiment of the protective case of the wireless charging system shown in fig. 1;

fig. 13 is a schematic flow chart diagram of still another embodiment of a charging method of the wireless charging system shown in fig. 1;

fig. 14 is a schematic structural view of still another embodiment of a protective case of the wireless charging system shown in fig. 1;

fig. 15 is a schematic flow chart diagram of still another embodiment of a charging method of the wireless charging system shown in fig. 1;

FIG. 16 is a schematic diagram of one embodiment of the electronic device shown in FIG. 4 in an operational state;

FIG. 17 is a schematic diagram of another embodiment of the electronic device shown in FIG. 4 in an operational state;

fig. 18 is a schematic structural view of still another embodiment of a protective case of the wireless charging system shown in fig. 1;

FIG. 19 is a schematic diagram of yet another embodiment of the electronic device shown in FIG. 4 in an operational state;

fig. 20 is a schematic structural diagram of another implementation manner of the wireless charging system provided in the embodiment of the present application;

fig. 21 is a schematic structural view of one embodiment of a protective case of the wireless charging system shown in fig. 20;

fig. 22 is a schematic flow chart diagram of one embodiment of a charging method of the wireless charging system shown in fig. 20;

fig. 23 is a schematic diagram of the electronic device of the wireless charging system shown in fig. 20 in an operating state;

fig. 24 is a schematic diagram of one embodiment of the wireless charging system of fig. 20 during a charging process;

fig. 25 is a schematic flow chart diagram of another embodiment of a charging method of the wireless charging system shown in fig. 20;

fig. 26 is a schematic diagram of another embodiment of the wireless charging system shown in fig. 20 during a charging process;

fig. 27 is a schematic structural view of another embodiment of the protective case of the wireless charging system shown in fig. 20;

fig. 28 is a schematic diagram of the electronic device of the wireless charging system shown in fig. 20 in an operating state;

fig. 29 is a schematic flow chart diagram of another embodiment of a charging method of the wireless charging system shown in fig. 20;

fig. 30 is a schematic structural view of still another embodiment of the protective case of the wireless charging system shown in fig. 20.

Detailed Description

The present application will specifically describe the structures of two wireless charging systems 1000 in conjunction with the related drawings. The first embodiment: the wireless charging system 1000 includes a protective case 100 and an electronic device 200. The second embodiment: the wireless charging system 1000 includes a protective case 100, an electronic device 200, and a charging cradle 300. In addition, the present application also provides two main charging methods, a charging method of the wireless charging system 1000 in the first embodiment, and a charging method of the wireless charging system 1000 in the second embodiment.

The first embodiment: referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an implementation manner of a wireless charging system according to an embodiment of the present disclosure. Fig. 2 is an exploded schematic view of the wireless charging system shown in fig. 1. The wireless charging system 1000 includes a protective case 100 and an electronic device 200. The protective case 100 may be sleeved outside the electronic device 200. At this time, the protective case 100 may be used to protect the electronic apparatus 200. The electronic device 200 may be a tablet computer, a mobile phone, a camera, a notebook computer, a vehicle-mounted device, or a wearable device. The electronic device 200 of the embodiment shown in fig. 1 is illustrated by taking a mobile phone as an example.

The case 100 may be communicatively coupled to the electronic device 200. It is understood that the communication connection is a connection mode: through the transmission interaction of signals, communication is formed between the connected devices. The communication connection includes a wired connection and a wireless connection. In other words, the protective case 100 and the electronic device 200 can communicate with each other. At this time, the protective case 100 may receive a signal from the electronic device 200 or may transmit a signal to the electronic device 200.

Referring to fig. 2 again, the protective case 100 includes a first bluetooth communication module 91. The position and size of the first bluetooth communication module 91 are not limited to those shown in fig. 2. The electronic device 200 includes a second bluetooth communication module 201. The position and size of the second bluetooth communication module 201 are not limited to those shown in fig. 2. At this time, the protective case 100 is connected to the electronic device 200 through the first bluetooth communication module 91 and the second bluetooth communication module 201.

The protective case 100 may further include a functional module 10 and a first processor 20. The functional module 10 may be a key, a warning light, a flash lamp, or a fingerprint recognition module. Fig. 2 illustrates that the functional modules 10 are keys. It can be understood that the functional module is disposed on the protective casing 100, so as to increase the functions of the protective casing 100, thereby improving the user experience of the protective casing 100, and extending the functions of the electronic device 200 through the protective casing 100.

In the present embodiment, the functional module 10 may be a key 10. The electronic device 200 comprises a second processor 202. The first processor 20 may be wirelessly connected to the second processor 202 through the first bluetooth communication module 91 and the second bluetooth communication module 201, that is, the first processor 20 may send a signal to the second processor 202 through bluetooth communication, or may receive a signal sent by the second processor 202 through bluetooth communication.

In addition, the key 10 is electrically connected to the first processor 20. The key 10 may be used to respond to a first operation (e.g., pressing, sliding, touching, or rotating) by a user to implement a corresponding key function, and the key 10 forms a signal path with the first processor 20. The first processor 20 may be configured to generate an operation signal after the key 10 forms a signal path with the first processor 20, and transmit the operation signal applied to the key 20 to the electronic apparatus 200 through bluetooth communication, so that the electronic apparatus 200 responds to the operation signal. In other words, the protective case 100 transmits the first operation signal to the electronic device 200 through bluetooth communication. Wherein the first operation signal is used for indicating the first operation. At this time, the electronic apparatus 200 responds to the first operation signal and performs the second operation. The use of a push button 10 in conjunction with an electronic device 200 is described in detail below by way of a simple application scenario.

When the user plays the shooting game through the electronic device 200, the user can effectively control characters in the game scene to perform shooting actions by operating the keys 10. For example, when a user needs to control a character in a game scene to shoot, the user presses the key 10. The first processor 20 transmits an operation signal applied to the key 10 to the second processor 202 through the first bluetooth communication module 91 and the second bluetooth communication module 201. The second processor 202 is responsive to the first operation signal to control a character in the game scene to fire. In other embodiments, the keys 10 may also be mapped to "previous page", "next page", or "determine" functions in the game interface.

In other embodiments, the key 10 may also be used as a key for adjusting the volume of the electronic device 200. In other words, the user can effectively adjust the volume of the electronic device 200 by pressing the key 10. The specific application is not limiting.

It is understood that, by providing the key 10 on the protective case 100 such that the key 10 serves as a signal input terminal of the electronic device 200, a key event applied to the key 10 is transmitted to the electronic device 200 through the first bluetooth communication module 91 and the second bluetooth communication module 201, and the electronic device 200 responds to the key event. At this time, the outer surface of the electronic device 200 does not need to be provided with more keys, that is, the appearance of the electronic device 200 is simpler.

Referring to fig. 3 in conjunction with fig. 2, fig. 3 is a schematic structural diagram of an embodiment of a protective case of the wireless charging system shown in fig. 1.

The protective case 100 further includes a case 30, a first charging coil 40, a switch module 50, a first wireless charging management chip 60, and a first battery 70. The first battery 70 is electrically connected to the functional module, i.e. the first battery 70 may be configured to supply power to the functional module. The housing 30 has a receiving space 31. The electronic device 200 is accommodated in the accommodating space 31.

Referring to fig. 4, fig. 4 is a schematic structural view of a shell of the protective shell shown in fig. 3. The housing 30 may include a frame 39 and first and

second bottom plates

38, 37. The first bottom plate 38 is disposed opposite to the second bottom plate 39. The first bottom plate 38 and the second bottom plate 37 are connected to the frame 39. The frame 39, the first bottom plate 38, and the second bottom plate 37 enclose the inside of the housing 30. In addition, the surface of the first bottom plate 38 facing away from the second bottom plate 39 and a part of the frame 39 enclose the receiving space 31.

Referring again to fig. 3, the key 10 may be mounted on the housing 30. Part of the keys 10 are exposed relative to the housing 30, and part of the keys 10 are located inside the housing 30. For example, the key 10 may be a physical mechanical key, and the key 10 may also be a touch key, a pressure-sensitive key, or other keys.

In addition, the first bluetooth communication module 91, the first processor 20, the first charging coil 40, the switch module 50, the first wireless charging management chip 60 and the first battery 70 are all mounted on the housing 30. The positions and sizes of the first processor 20, the first charging coil 40, the switch module 50, the first wireless charging management chip 60 and the first battery 70 are not limited to the sizes and positions illustrated in fig. 3. In addition, since the first bluetooth communication module 91, the first processor 20, the first charging coil 40, the first wireless charging management chip 60 and the first battery 70 are all located inside the housing 30, fig. 3 is simply illustrated by a dotted line.

In one embodiment, the switch module 50 may be located entirely within the housing 30, or may be partially located within the housing 30 and partially exposed relative to the housing 30. Fig. 3 illustrates by means of a dashed line that the switch module 50 is located inside the housing 30.

In addition, the switching module 50 may be connected between the first charging coil 40 and the first wireless charging management chip 60. The first battery 70 is connected to the first wireless charge management chip 60. At this time, the first charging coil 40, the switch module 50, the first wireless charging management chip 60 and the first battery 70 form a current transmission path for wireless charging.

It is understood that the first charging coil 40 may be used to generate an alternating current under an alternating magnetic field. The first wireless charge management chip 60 is used to convert an alternating current into a direct current. The switch module 50 is used to open or close a signal path between the first charging coil 40 and the first wireless charging management chip 60. The first battery 70 is used for providing power to the first processor 20 and the first wireless charging management chip 60, so that the first processor 20 and the first wireless charging management chip 60 are in an operating state.

In the present embodiment, the switch module 50 may be, but is not limited to, an electronic switch. The switch module 50 may also be a mechanical switch. The electronic switch is an operation unit for realizing the on-off of a circuit by utilizing an electronic circuit and a power electronic device. A mechanical switch refers to a switch that can be turned on and off by a user operation (e.g., pressing, toggling, or rotating). Both of these switching modules 50 will be described in detail below in connection with the associated figures.

In a first embodiment, the switch module 50 is an electronic switch. The switch module 50 is electrically connected to the first processor 20.

Referring to fig. 5, fig. 5 is a schematic view of a portion of the protective shell shown in fig. 3. The switch module 50 includes a first Metal-Oxide-Semiconductor Field-Effect Transistor (mosfet), that is, a first MOS Transistor 51, a second MOS Transistor 52, a first resistor 53, a second resistor 54, a third resistor 55, and a fourth resistor 56. A first terminal of the first resistor 53 and a first terminal of the second resistor 54 are connected to each other and are commonly connected to the first processor 20. Fig. 5 illustrates the connection position of the first resistor 53 and the second resistor 54 to the first processor 20 as P5.

The second terminal of the first resistor 53 is grounded. A second terminal of the second resistor 54 is connected to the gate 511 of the first MOS transistor 51. The gate 512 of the first MOS transistor 51 is connected to the first end of the third resistor 55. The drain 513 of the first MOS transistor 51 is connected to the first battery 70 through a low dropout regulator 90 (LDO). Fig. 5 shows that the connection position of the drain 513 of the first MOS transistor 51 and the low dropout regulator 90 is P4.

The second terminal of the third resistor 55 is connected to the first terminal of the fourth resistor 56, and the second terminal of the third resistor 55 and the first terminal of the fourth resistor 56 are connected to the gate 521 of the second MOS transistor 52. Fig. 5 shows that the connection position of the second terminal of the third resistor 55 and the first terminal of the fourth resistor 56 to the gate 521 of the second MOS transistor 52 is P3.

A second terminal of the fourth resistor 56 is connected to ground. The gate 522 of the second MOS transistor 52 is connected to the first charging coil 40. Fig. 3 illustrates that the connection position of the gate 522 of the second MOS transistor 52 and the first charging coil 40 is P1.

The drain 523 of the second MOS transistor 52 is connected to the first wireless charging management chip 60. Fig. 5 shows that the connection position of the drain 523 of the second MOS transistor 52 and the first wireless charging management chip 60 is P2.

Further, fig. 5 illustrates that the first wireless charge management chip 60 is connected to the first battery 70 through a position a and a position B.

It is understood that when the protective case 100 is in the on state, the first battery 70 supplies power to the low dropout regulator 90. At this time, the P4 position is high.

If the first processor 20 sends a signal with a high level, the P5 position is high. The first MOS transistor 51 is in a conducting state. At this time, the P3 position is also high. At this time, the second MOS transistor 52 is in an off state, and is off between P1 and P2, that is: the signal path between the first charging coil 40 and the first wireless charging management chip 60 is open, that is, the current cannot flow from the P1 position to the P2 position, and the wireless charging path from the first charging coil 40 to the first battery 70 is open.

If the first processor 20 sends a signal with a low level, the position P5 is low. The first MOS transistor 51 is in an off state, that is, current cannot flow through the first MOS transistor 51. At this time, the P3 position is low. The second MOS transistor 52 is in a conducting state, and is conducted between P1 and P2, that is: the signal path between the first charging coil 40 and the first wireless charging management chip 60 is conductive, i.e. current can flow from the P1 position to the P2 position, and the wireless charging path from the first charging coil 40 to the first battery 70 is conductive.

The P4 position is low when the protective case 100 is in the off state or the first battery 70 is low on power. Further, the first processor 20 is not in an operating state. P5 is low. At this time, the first MOS transistor 51 is in a non-conductive state. The second MOS transistor 52 is in a conducting state, and is conducted between P1 and P2, that is: the signal path between the first charging coil 40 and the first wireless charging management chip 60 is conductive. Therefore, in this embodiment, when the protective case 100 is in the shutdown state or the first battery 70 is low in charge, the wireless charging path from the first charging coil 40 to the first battery 70 is turned on, the protective case 100 can receive the wireless charging signal of another wireless charging device through the first charging coil 40, and the first wireless charging management chip 60 converts the wireless charging signal into the direct current and then charges the first battery 70.

In this embodiment, the first resistor 53 is used to prevent the voltage at the P5 position from being pulled low by the grounding point when the P5 position is high. The first resistor 53 may also be used to default to the P5 position to a low state when no signal is applied by the first processor 20. The second resistor 54 is used to limit current to protect the first processor 20. The third resistor 55 and the fourth resistor 56 are used for voltage division. In addition, the fourth resistor 56 can also be used to prevent the voltage of P3 from being pulled low by the grounding point when the P3 position is high.

In one embodiment, the number of the second MOS transistors 52 may be at least two. At least two second MOS transistors 52 are connected in parallel. Specifically, the gates of at least two second MOS transistors 52 are connected to each other. The gates of at least two second MOS transistors 52 are connected to each other. The drains of the at least two second MOS transistors 52 are connected to each other. It can be understood that, by connecting at least two second MOS transistors 52 in parallel between the P1 position and the P2 position, the impedance between P1 and P2 is significantly lower.

Referring to fig. 6 again, fig. 6 is a schematic structural diagram of the electronic device of the wireless charging system shown in fig. 1. The electronic device 200 further comprises a housing 203, a display screen 204, a second charging coil 205, a second wireless charging management chip 206, and a second battery 207. A display screen 204 is mounted on the housing 203. The second bluetooth communication module 201, the second processor 202, the second charging coil 205, the second wireless charging management chip 206 and the second battery 207 may be disposed inside the electronic device 200. At this time, fig. 6 simply illustrates the second bluetooth communication module 201, the second processor 202, the second charging coil 205, the second wireless charging management chip 206 and the second battery 207 by dotted lines. However, the size and position of the second bluetooth communication module 201, the second processor 202, the second charging coil 205, the second wireless charging management chip 206 and the second battery 207 are not limited to the size and position illustrated in fig. 6.

In addition, a second wireless charging management chip 206 may be connected between the second charging coil 205 and the second battery 207. At this time, the second charging coil 205, the second wireless charging management chip 206 and the second battery 207 may form a current transmission path for wireless charging. In addition, the second wireless charging management chip 206 is electrically connected to the second processor 202, i.e. the second battery 207 can provide power to the second processor 202 through the second wireless charging management chip 206. In addition, the second processor 202 is communicatively connected to the second wireless charging management chip 206. At this time, the second processor 202 may transmit a control signal to the second wireless charging management chip 206 to control the wireless charging management chip 206.

In addition, the second charging coil 205 may be used to generate an alternating current under an alternating magnetic field, and may also be used to generate an alternating magnetic field under an alternating current. The second wireless charging management chip 206 may be used to switch between input and output states. When the second wireless charging management chip 206 is switched to the input state, the second wireless charging management chip 206 receives the wireless charging signal and provides the charging current to the second battery 207. When the second wireless charging management chip 206 is switched to the output state, the second wireless charging management chip 206 transmits a wireless charging signal to the outside through the second wireless charging coil 205 to wirelessly charge other electronic devices (e.g., the protective case 100). The second battery 207 is used to supply power to the functional devices within the electronic apparatus 200. For example, the second battery 207 supplies power to the display 204 and the second wireless charging management chip 206.

In the following embodiments, a charging method of the wireless charging system 1000 according to the first embodiment of the present application is specifically described based on the structure of the wireless charging system 1000 shown in fig. 1 and with reference to fig. 2 to 6. Referring to fig. 7, fig. 7 is a flowchart illustrating an embodiment of a charging method of the wireless charging system shown in fig. 1. In the present embodiment, the first processor 20 of the protective case 100 is used as an execution subject for transmitting signals to the electronic apparatus 200 and receiving signals from the electronic apparatus 200. Of course, in other embodiments, the execution main body of the protective case 100 that transmits the signal to the electronic device 200 and receives the signal of the electronic device 200 is not limited to the first processor 20. Such as the first wireless charge management chip 60. Further, in the present embodiment, the second processor 202 of the electronic apparatus 200 is used as an execution subject for transmitting a signal to the protective case 100 and receiving a signal from the protective case 100. Of course, in other embodiments, the execution subject of the electronic device 200 to transmit the signal to the protective case 100 and receive the signal from the protective case 100 is not limited to the second processor 202. For example, the second wireless charging management chip 206.

In the present embodiment, the charging method includes, but is not limited to, the method illustrated in fig. 7 including S100 to S600. It is understood that through S100 to S600, when the voltage of the first battery 70 is low or the power is low, the electronic device 200 can automatically charge the first battery 70 of the protective case 100 to ensure that the protective case 100 has a sufficient power in use.

Specifically, the method comprises the following steps:

s100: the first processor 20 obtains the voltage of the first battery 70.

In one embodiment, the first processor 20 is communicatively coupled to the first wireless charging management chip 60. The first wireless charge management chip 60 acquires the voltage of the first battery 70. The first wireless charging management chip 60 then sends the electrical signal with the voltage to the first processor 20. The first processor 20 receives the electrical signal and derives a voltage from the electrical signal. In other embodiments, the first processor 20 may also directly obtain the voltage of the first battery 70.

In one embodiment, the first processor 20 presets an acquisition period. The first processor 20 acquires the voltage of the first battery 70 once in one acquisition period. For example, the acquisition period is ten minutes. At this time, the first processor 20 acquires the voltage of the first battery 70 once every ten minutes.

In one embodiment, the first processor 20 may also obtain the power of the first battery 70. Specifically, the first wireless charge management chip 60 acquires the voltage of the first battery 70. In addition, the first wireless charging management chip 60 recognizes the amount of power from the voltage. The first wireless charging management chip 60 then sends the electrical signal with the amount of power to the first processor 20. The first processor 20 receives the electrical signal and derives an amount of power from the electrical signal.

Referring to fig. 8, fig. 8 is a schematic diagram of an embodiment of the wireless charging system shown in fig. 1 during a charging process.

S200: when the voltage of the first battery 70 is less than or equal to the preset second voltage threshold, the first processor 20 sends a second trigger signal to the switching module 50.

It will be appreciated that the second voltage threshold is preset as a parameter value pre-stored in the first processor 20.

In this embodiment, the second trigger signal is a low level signal. In other embodiments, the second trigger signal may also be a high level signal. The specific configuration may depend on the circuit configuration of the switch module 50. Fig. 8 illustrates the transmission direction of the second trigger signal by means of a dashed line with an arrow.

In one embodiment, the first processor 20 obtains a voltage of the first battery 70 of 3V. The preset second voltage threshold is 3.5V. At this time, the first processor 20 confirms whether the voltage of the first battery 70 is less than or equal to a preset second voltage threshold. When the first processor 20 determines that 3V is less than 3.5V, the first processor 20 sends a second trigger signal, i.e., a low level signal, to the switch module 50.

In one embodiment, when the voltage of the first battery 70 is less than or equal to the preset second voltage threshold, the sending the second trigger signal to the switch module 50 by the first processor 20 includes:

the first processor 20 sends a first signal to the second processor 202;

in one embodiment, the first processor 20 sends the first signal to the second processor 202 through the first bluetooth communication module 91 and the second bluetooth communication module 201.

The second processor 202 responds to the first signal and controls the display screen 204 to display a protective shell charging icon;

in one embodiment, the display screen 204 is provided with charging software. When the second processor 202 responds to the first signal, the charging software is automatically turned on. And displaying a protective shell charging icon on an operation interface of the charging software. The case charge icon may be, but is not limited to, an icon that is "case charge".

The second processor 202 receives the first touch signal sent by the display screen 204 and sends a second signal to the first processor 20.

Specifically, the user clicks the protective case charging icon. The display screen 204 generates a first touch signal according to a clicking action of a user, and sends the first touch signal to the second processor 202;

the second processor 202 sends the second signal to the first processor 20 through the first bluetooth communication module 91 and the second bluetooth communication module 201.

The first processor 20 is responsive to the second signal and sends a second trigger signal to the switch module 50.

It can be appreciated that, in the above manner, the electronic device 200 can charge the protective case 100 according to the selection of the user, thereby improving the user experience of the wireless charging system 1000.

In other embodiments, the first processor 20 may also obtain the charge of the first battery 70. When the charge of the first battery 70 is less than or equal to the preset first charge threshold, the first processor 20 sends a second trigger signal to the switch module 50.

In other embodiments, the first processor 20 sending the second trigger signal includes:

the first processor 20 signals the acquired voltage of the first battery 70 to the second processor 202.

The second processor 202 confirms whether the voltage of the first battery 70 is less than or equal to a preset second voltage threshold. It will be appreciated that the second voltage threshold is a pre-stored parameter value for the second processor 202.

When the voltage of the first battery 70 is less than or equal to the preset second voltage threshold, the second processor 202 sends a feedback signal to the first processor 20. The first processor 20 receives the feedback signal and sends a second trigger signal to the switch module 50 according to the feedback signal.

S300: the switch module 50 responds to the second trigger signal, and the first charging coil 40 and the first wireless charging management chip 60 form a signal path.

It will be appreciated that the switch module 50 receives a low level signal. Referring to fig. 5, at this time, the P5 position is low, and the P1 and the P2 positions are in a conducting state, that is, the switch module 50 is in a conducting state. The first charging coil 40 forms a signal path with the first wireless charging management chip 60. In other words, current can be transmitted from the first charging coil 40 and the switch module 50 to the first wireless charging management chip 60.

S400: the electronic device 200 radiates a first alternating magnetic field, i.e. the electronic device 200 radiates a wireless charging signal.

In one embodiment, the first processor 20 sends a signal to the second processor 202. For example, the signal may be transmitted to the second processor 202 through the first bluetooth communication module 91 and the second bluetooth communication module 201.

The second processor 202 receives the signal and sends a second electrical signal to the second wireless charging management chip 206, so that the second wireless charging management chip 206 is in an enabled state, that is, the second wireless charging management chip 206 is in an operating state. At this time, the second battery 207, the second wireless charging management chip 206, and the second charging coil 205 form a signal path. In addition, the second wireless charging management chip 206 is switched to an output state, i.e., the second wireless charging management chip 206 can be used to convert the direct current into an alternating current. Fig. 8 illustrates the direction of transmission of the second wire number by means of a dashed line with arrows.

The second battery 207 transmits a dc current to the second wireless charging management chip 206.

The second wireless charging management chip 206 converts the dc current into an ac current, and the ac current is transmitted to the second charging coil 205. Fig. 8 illustrates a transmission path of current on the electronic device 100 by a solid line with an arrow.

The second charging coil 205 generates a first alternating magnetic field under an alternating current.

In other embodiments, the first processor 20 may also directly send the second electrical signal to the second wireless charging management chip 206, so that the second wireless charging management chip 206 is in an enabled state, and the second wireless charging management chip 206 is switched to an output state.

It is understood that S400 may also be located before S200, that is, when the voltage of the first battery 70 is less than or equal to the preset second voltage threshold, the electronic device 200 radiates the first alternating magnetic field. The first processor 20 then sends a second trigger signal to the switch module 50. In addition, the "first processor 20 sends the second trigger signal to the second processor 202" in S400 may be performed simultaneously with the "first processor 20 sends the second trigger signal to the switch module 50" in S200.

S500: the first charging coil 40 generates a first alternating current under the first alternating magnetic field, and the first alternating current is transmitted to the first wireless charging management chip 60.

S600: the first wireless charge management chip 60 converts the first alternating current into a first direct current to charge the first battery 70. Fig. 8 illustrates a transmission path of current of the protective case 100 by a solid line with an arrow.

In the present embodiment, through S100, S200, S300, S400, S500 and S600, when the voltage of the first battery 70 is low or the power is low, the electronic device 200 can automatically charge the first battery 70 of the protective case 100 to ensure that the protective case 100 has a sufficient power in use.

In other embodiments, the second trigger signal is not limited to be generated through S100 and S200, and the second trigger signal may also be generated through the following embodiments. The details are as follows.

The second processor 202 acquires the voltage of the second battery 207;

when the voltage of the second battery 207 is greater than or equal to the preset fourth voltage threshold, the second processor 202 sends a second trigger signal to the first processor 20, and the first processor 20 receives the second trigger signal and sends the second trigger signal to the switch module 50.

It is to be understood that the preset fourth voltage threshold is a parameter value pre-stored in the second processor 202.

In the present embodiment, when the voltage of the second battery 207 is greater than or equal to the preset fourth voltage threshold, the charge of the second battery 207 of the electronic device 200 is in a relatively sufficient state. At this time, the electronic device 200 charges the protective case 100 by controlling the switch module 50 to be turned on. Therefore, the present embodiment can continuously charge the protective case 100 while ensuring that the electronic device 200 has a sufficient amount of power, so that the protective case 100 has a sufficient amount of power for a long time.

In one embodiment, please refer to fig. 9, and fig. 9 is a flowchart illustrating a charging method of the wireless charging system shown in fig. 1 according to another embodiment. After the first wireless charging management chip 60 converts the first alternating current into the first direct current and transmits the first direct current to the first battery 70 in S600, the charging method further includes, but is not limited to, S710 and S720. S710 and S720 are optional steps following S100, S200, S300, S400, S500, and S600. The charging method of the present embodiment is the same as the charging method of the above embodiments in part, and details are not repeated. Details of S710 and S720 are as follows.

S710: the first processor 20 obtains the voltage of the first battery 70.

In one embodiment, the first processor 20 is communicatively coupled to the first wireless charging management chip 60. The first wireless charge management chip 60 acquires the voltage of the first battery 70. The first wireless charging management chip 60 transmits an electrical signal having a voltage to the first processor 20. The first processor 20 receives the electrical signal and derives a voltage from the electrical signal. In other embodiments, the first processor 20 may also directly obtain the voltage of the first battery 70.

In one embodiment, the first processor 20 presets an acquisition period. The first processor 20 acquires the voltage of the first battery 70 once during the acquisition period. For example, the acquisition period is ten minutes. At this time, the first processor 20 acquires the voltage of the first battery 70 once every ten minutes.

In one embodiment, the first processor 20 may also obtain the power of the first battery 70. Specifically, the first wireless charge management chip 60 acquires the voltage of the first battery 70. In addition, the first wireless charge management chip 60 recognizes the amount of charge of the first battery 70 from the voltage. The first wireless charging management chip 60 then sends a signal with the amount of power to the first processor 20. The first processor 20 receives the signal and derives power from the signal.

S720: when the voltage of the first battery 70 is greater than or equal to a preset third voltage threshold, the first processor 20 sends a first trigger signal to the switch module 50 to turn off the switch module 50, wherein the preset third voltage threshold is greater than the preset second voltage threshold.

It will be appreciated that the third voltage threshold is preset as a parameter value pre-stored in the first processor 20.

In this embodiment, the first trigger signal is a high level signal. In other embodiments, the first trigger signal may also be a low level signal. The specific configuration may depend on the circuit configuration of the switch module 50.

In one embodiment, the voltage obtained by the first processor 20 is 4.4V. The preset third voltage threshold is 4.3V. At this time, the first processor 20 confirms whether the voltage is greater than or equal to a preset third voltage threshold. The first processor 20 recognizes that 4.4V is greater than 4.3V, i.e., the first battery 70 is in a more fully charged state. The first processor 20 sends a first trigger signal, i.e., a high level signal, to the switch module 50.

In the present embodiment, when the first battery 70 is in the full state, the first processor 20 sends a first trigger signal to the switch module 50 to turn off the switch module 50. At this time, the electronic apparatus 200 does not charge the first battery 70 of the protective case 100 any more. Thus, when the first battery 70 is in a fully charged state, the first charging coil 40 does not cause a current loss of the second battery 207 due to the re-generation of the alternating current.

In other embodiments, the first processor 20 may also obtain the charge of the first battery 70. When the charge of the first battery 70 is less than or equal to the preset second charge threshold, the first processor 20 sends a first trigger signal to the switch module 50. The preset second electric quantity threshold value is larger than the preset first electric quantity threshold value.

In other embodiments, the first processor 20 sending the first trigger signal includes:

The second processor 202 confirms whether the voltage of the first battery 70 is less than or equal to a preset third voltage threshold. It will be appreciated that the third voltage threshold is a pre-stored parameter value for the second processor 202.

When the voltage of the first battery 70 is greater than or equal to the preset second voltage threshold, the second processor 202 sends a feedback signal to the first processor 20. The first processor 20 receives the feedback signal and sends a first trigger signal to the switch module 50 according to the feedback signal.

In one embodiment, the first processor 20 sends a signal to the second processor 202 when the voltage of the first battery 70 is greater than or equal to a preset third voltage threshold.

The second processor 202 receives the signal and sends a first electrical signal to the second wireless charging management chip 206.

The second wireless charging management chip 206 responds to the first electrical signal to be in a non-enabled state, i.e. the second wireless charging management chip 206 is in a non-operating state. At this time, the current of the second battery 207 cannot be transmitted to the second charging coil 205 through the second wireless charging management chip 206.

It will be appreciated that when the switch module 50 is open, the first battery 70 is in an uncharged state. At this time, the second charging coil 205 does not radiate the second alternating magnetic field any more by controlling the second wireless charging management chip 206 to be in an disabled state. Therefore, when the first battery 70 is in the uncharged state, the current of the second battery 207 is not lost due to the continuous radiation of the first alternating magnetic field by the second charging coil 205.

In one embodiment, after the first wireless charging management chip 60 converts the first alternating current into the first direct current and transmits the first direct current to the first battery 70S 600, the charging method further includes:

the second processor 202 receives the second touch signal sent by the display screen 204 and sends a third signal to the first processor 20.

Specifically, the user turns on the charging software. And displaying an icon for not charging the protective shell on an operation interface of the charging software. The user clicks the no charge for protective case icon. The no charge on protective case icon may be, but is not limited to, an icon of "no charge on protective case". The display screen 204 generates a second touch signal according to the clicking action of the user, and sends the second touch signal to the second processor 202. The second processor 202 sends the third signal to the first processor 20 through the first bluetooth communication module 91 and the second bluetooth communication module 201.

The first processor 20 is responsive to the third signal and sends a first trigger signal to the switch module 50.

It is understood that, in the above manner, the electronic device 200 may not charge the protective case 100 according to the selection of the user, thereby improving the user experience of the wireless charging system 1000.

In addition, the second processor 202 receives a second touch signal, and then the charging method further includes:

the second processor 202 sends the first electrical signal to the second wireless charging management chip 206.

In one embodiment, please refer to fig. 10 and 11, fig. 10 is a flowchart illustrating a charging method of the wireless charging system shown in fig. 1 according to another embodiment. Fig. 11 is a schematic diagram of another embodiment of the wireless charging system shown in fig. 1 during a charging process. The charging method further includes, but is not limited to, S810 and S820. S810 and S820 are optional steps after S100. The charging method of the present embodiment is the same as the charging method of the above embodiments in part, and details are not repeated. Details of S810 and S820 are as follows.

S810: when the voltage of the first battery 70 is greater than the preset second voltage threshold, the first processor 20 sends a first trigger signal to the switch module 50, where the first trigger signal is different from the second trigger signal. In this embodiment, the first trigger signal is a high level signal. Fig. 11 illustrates the transmission direction of the first trigger signal by means of a dashed line with an arrow.

In one embodiment, the first processor 20 obtains a voltage of the first battery 70 of 4.2V. At this point, the first processor 20 determines that 4.2V is greater than 3.5V. The first processor 20 sends a first trigger signal, i.e., a high level signal, to the switch module 50.

In other embodiments, the first processor 20 may also obtain the charge of the first battery 70. The switching module 50 is turned on or off according to the charge amount of the first battery 70. For example, when the power of the first battery 70 is greater than the preset first power threshold, the first processor 20 sends a first trigger signal, i.e., a high level signal, to the switch module 50.

S820: in response to the first trigger signal, the switching module 50 opens a signal path between the first charging coil 40 and the first wireless charging management chip 60. That is, a signal path formed by the first charging coil 40, the switching module 50, the first wireless charging management chip 60, and the first battery 70 is disconnected, and no current flows through the signal path. Fig. 11 illustrates by dotted lines that no current passes through the first charging coil 40, the switch module 50, the first wireless charging management chip 60, and the first battery 70.

It is understood that, in conjunction with fig. 5, in response to the first trigger signal, the level of the node P5 is high, and no conduction is formed between P1 and P2. That is, the switch module 50 is in an open state. The signal path between the first charging coil 40 and the first wireless charging management chip 60 is open. Namely: the wireless charging path within the protective case 100 is open and cannot wirelessly charge the first battery 70.

In the present embodiment, through S810 and S820, when the voltage of the first battery 70 is high or the power is high, the switch module 50 of the protective case 100 can be automatically turned off, so that the electronic device 200 does not charge the first battery 70 of the protective case 100 any more. At this time, the second battery 207 of the electronic device 200 does not increase the power consumption rate by continuously charging the protective case 100.

In one embodiment, when the voltage of the first battery 70 is greater than the preset second voltage threshold in S810, the first processor 20 sends a signal to the second processor 202.

The second processor 202 receives the signal and sends a first electrical signal to the second wireless charging management chip 206. Fig. 11 illustrates the transmission direction of the first electrical signal by a dotted line with an arrow.

The second wireless charging management chip 206 responds to the first electrical signal to be in a non-enabled state, i.e. the second wireless charging management chip 206 is in a non-operating state. At this time, the current of the second battery 207 cannot be transmitted to the second charging coil 205 through the second wireless charging management chip 206. Fig. 11 illustrates by a dotted line that no current passes through the second charging coil 205, the second wireless charging management chip 206 and the second battery 207.

It is understood that when the switching module 50 is opened, the wireless charging path of the first battery 70 is opened. The second charging coil 205 does not radiate the second alternating magnetic field any more by controlling the second wireless charging management chip 206 to be in a non-enabled state. Therefore, when the first battery 70 is in the uncharged state, the current of the second battery 207 is not lost due to the continuous radiation of the first alternating magnetic field by the second charging coil 205.

In an embodiment, please refer to fig. 12, where fig. 12 is a schematic structural diagram of another embodiment of the protective case of the wireless charging system shown in fig. 1. The protective case 100 further includes a detection coil 80. The detection coil 80 is mounted inside the case 30. Fig. 12 simply illustrates the position and size of the detection coil 80 by a dotted line. However, the position and size of the detection coil 80 are not limited to those illustrated in fig. 12. The detection coil 80 is electrically connected to the first processor 20. The detection coil 80 is used to generate an alternating current under an alternating magnetic field.

Referring to fig. 13, fig. 13 is a flowchart illustrating a charging method of the wireless charging system shown in fig. 1 according to still another embodiment.

In one embodiment, after the first wireless charging management chip 60 converts the first alternating current into the first direct current and transmits the first direct current to the first battery 70 in S600, the charging method further includes, but is not limited to, S910 and S920. S910 and S920 are optional steps following S100, S200, S300, S400, S500, and S600. The charging method of the present embodiment is the same as the charging method of the above embodiments in part, and details are not repeated. Details of S910 and S920 are as follows.

S910: the first processor 20 acquires a detection voltage, which is a voltage formed by the detection coil 80 under the second alternating magnetic field. The second alternating magnetic field is a magnetic field generated by the wireless charging device. The wireless charging device may be, but is not limited to being, a charging cradle.

Specifically, when the protective casing 100 sleeved on the outer side of the electronic device 200 is close to the second alternating magnetic field, the detection coil 80 generates a second alternating current under the second alternating magnetic field. At this time, the detection coil 80 generates a detection voltage. The first processor 20 acquires the detection voltage and confirms the magnitude of the detection voltage.

S920: when the detected voltage is greater than or equal to the preset first voltage threshold, the first processor 20 sends a first trigger signal to the switch module 50, and the switch module 50 disconnects a signal path between the first charging coil 40 and the first wireless charging management chip 60. At this time, the alternating current generated by the first charging coil 40 is almost zero.

It will be appreciated that the first voltage threshold is preset to a parameter value pre-stored by the first processor 20.

In the present embodiment, when the electronic device 200 is charging the first battery 70, if the detection coil 80 generates the detection voltage under the second alternating magnetic field and the magnitude of the detection voltage is greater than or equal to the preset first voltage threshold, the first processor 20 sends the first trigger signal to the switch module 50, so that the switch module 50 is turned off, that is, the electronic device 200 does not charge the first battery 70 of the protective case 100 any more. Like this, under the stronger second alternating magnetic field of magnetic field intensity, the first charging coil 40 of protective housing 100 can not produce great alternating current to avoid first wireless core piece 60 to take place to damage.

In other embodiments, the detection voltage is not limited to be determined by the first processor 20 as being greater than or equal to the first voltage threshold, but may be generated by the following embodiments. The detailed description is as follows:

the first processor 20 acquires the detection voltage;

the first processor 20 sends the acquired detection voltage to the second processor 202 in a signal mode;

the second processor 202 determines whether the detected voltage is greater than or equal to a preset first voltage threshold. It will be appreciated that the first voltage threshold is a pre-stored parameter value for the second processor 202.

When the detected voltage is greater than or equal to the preset first voltage threshold, the second processor 202 sends a feedback signal to the first processor.

The first processor 20 receives the feedback signal and sends a first trigger signal to the switch module 50 according to the feedback signal.

Referring again to fig. 12, the number of the detection coils 80 is at least two. The number of the detection coils 80 is not limited to four as illustrated in fig. 12. At least two detection coils 80 are located at the periphery of the first charging coil 40. At this time, when the protective case 100 and the electronic device 200 approach the second alternating magnetic field from different directions, the detection coil 80 can generate a voltage relatively quickly, and when the voltage is greater than or equal to the preset first voltage threshold, the switch module 50 is controlled to be turned off quickly, so that the electronic device 200 does not charge the protective case 100 any more.

In the second embodiment, the same contents as those in the first embodiment are not described again: referring to fig. 14, fig. 14 is a schematic structural diagram of another embodiment of a protective case of the wireless charging system shown in fig. 1. The switch module 50 is a mechanical switch. The mechanical switch includes a first button 51 and a switch 52. The first button 51 is connected to the switch 52. The switch 52 is connected between the first charging coil 40 and the first wireless charging management chip 60. A portion of the first key 51 is exposed relative to the housing 30. A portion of the first key 51 is mounted inside the housing 30. The switch 52 is mounted inside the housing 30. Fig. 14 illustrates the position and size of the switch 52 by dashed lines. However, the position and size of the switch 52 are not limited to the position and size of the switch 52 illustrated in fig. 14.

Further, the mechanical switch may be, but is not limited to, a slide switch, a push switch, or a rotary switch. In the present embodiment, the mechanical switch will be described by taking a slide switch as an example. When the mechanical switch is a slide switch, a user can slide the key to enable the switch to be in a conducting state or a disconnecting state. For example, when the user slides the switch module 50 in the positive direction of the Y-axis, the switch module 50 is in the on state. When the user slides the switch module 50 in the negative direction of the Y-axis, the switch module 50 is in the off state. The Y-axis direction is the longitudinal direction of the protective case 100. The X-axis direction is the width direction of the protective case 100.

Referring to fig. 15 in conjunction with fig. 14, fig. 15 is a flowchart illustrating a charging method of the wireless charging system shown in fig. 1 according to still another embodiment. The charging method in the present embodiment will be described below with reference to fig. 14 and 15. Specifically, the method comprises the following steps:

the charging method comprises the following steps:

s100: the first processor 20 obtains the voltage of the first battery 70. The specific manner of this step can be referred to S100 of the above embodiment. And will not be described in detail herein.

Referring to fig. 16, fig. 16 is a schematic diagram of an embodiment of the electronic device shown in fig. 4 in an operating state.

S200: when the voltage of the first battery 70 is less than or equal to the preset second voltage threshold, the first processor 20 sends a first electrical signal to the second processor 202.

In one embodiment, the first electrical signal is transmitted to the second processor 202 of the electronic device 200 through the first bluetooth communication module 91 and the second bluetooth communication module 201.

In addition, the manner of confirming that the voltage of the first battery is less than or equal to the preset second voltage threshold may be referred to S200 of the above embodiment. And will not be described in detail herein.

S300: the second processor 202 controls the display screen 204 to display charging reminding information of the protective shell 100 according to the first electric signal. And the second user operation is the operation made by the user according to the charging reminding information.

The charging reminding information of the protective shell can be, but is not limited to, "please turn on the switch when the electric quantity of the protective shell is insufficient".

In one embodiment, the display screen 204 is provided with charging software. When the second processor 202 responds to the first electrical signal, the charging software is automatically turned on. And displaying charging reminding information of the protective shell on an operation interface of the charging software. After the user sees the charging reminder information of the protective case 100 on the display screen 204, the user can turn on the switch module 50 according to the charging reminder information of the protective case 100. For example, the user slides the first key 51 in the positive direction of the Y-axis.

S400: the switch module 50 responds to the second user operation, and the switch module 50 conducts a signal path between the first charging coil 40 and the first wireless charging management chip 60. In other words, the signal path between the first charging coil 40 and the first wireless charging management chip 60 is conductive.

Specifically, when the user slides the first button 51 in the positive direction of the Y-axis, the switch 52 is turned on. At this time, after the switch 52 is turned on, the first charging coil 40 and the first wireless charging management chip 60 form a signal path, that is, a current can be transmitted from the first charging coil 40 to the first wireless charging management chip 60.

S500: the electronic device 200 radiates a first alternating magnetic field. The specific implementation of this step is the same as S400 of the first implementation, and is not described here again. It is understood that S500 may also be located before S400 and after S300. Alternatively, S500 and S400 may be performed simultaneously.

S600: the first charging coil 40 forms a first alternating current under a first alternating magnetic field generated by the electronic device 200 and transmits the first alternating current to the first wireless charging management chip 60. The specific implementation of this step is the same as S500 of the first implementation, and is not described here again.

S700: the first wireless charge management chip 60 converts the first alternating current into a first direct current and transmits the first direct current to the first battery 70. At this time, the first battery 70 is in a charged state. The specific implementation of this step is the same as S600 of the first implementation, and is not described here again.

In the present embodiment, through steps S100, S200, S300, S400, S500, S600, and S700, when the voltage of the first battery 70 is low or the power is low, the electronic apparatus 200 charges the first battery 70 of the protective case 100 at the selection of the user.

In other embodiments, S100, S200 and S300 can also be implemented by the following embodiments. The charging method of the present embodiment has the same technical contents as those of the charging method of the above embodiments, and is not repeated. The details are as follows.

The second processor 202 acquires the voltage of the second battery 207;

when the voltage of the second battery 207 is greater than or equal to the preset fourth voltage threshold, the second processor 202 controls the display screen 204 to display a charging reminding message of the protective case 100. Wherein, the second user operation is an operation made by the user according to the charging reminder information of the protective case 100. The content of the charging reminder information of the protective case 100 may be the same as the above embodiment, and is not described herein again.

It is understood that the second battery 207 of the electronic device 200 has a sufficient amount of power when the voltage of the second battery 207 is greater than or equal to the preset fourth voltage threshold. At this time, when the user selects to charge the protective case 100, the electronic apparatus 200 can continuously charge the protective case 100. Therefore, the electronic apparatus 200 according to the present embodiment can continuously charge the protective case 100 according to the selection of the user while ensuring that the electronic apparatus itself has a sufficient amount of power, thereby ensuring that the protective case 100 always has a sufficient amount of power.

In one embodiment, please refer to fig. 14 again in combination with fig. 17, and fig. 17 is a schematic diagram of another embodiment of the electronic device shown in fig. 4 in an operating state. After the first wireless charging management chip 60 converts the first alternating current into a first direct current and transmits the first direct current to the first battery 70S 600, the charging method further includes:

the first processor 20 obtains the voltage of the first battery 70.

When the voltage is greater than or equal to the preset third voltage threshold, the first processor 20 sends a first electrical signal to the second processor 202.

The second processor 202 controls the display screen 204 to display the information that the protective shell is fully charged according to the first electric signal.

In one embodiment, the display screen 204 is provided with charging software. When the second processor 202 responds to the first electrical signal, the charging software is automatically turned on. And displaying the full charging information of the protective shell on an operation interface of the charging software.

It is understood that the full charge information of the protective case 100 may be, but is not limited to, "the protective case is full, please close the switch". After the user sees the full charge information of the protective case on the display screen 204, the user turns off the mechanical switch according to the full charge information of the protective case 100. For example, the user slides the first key 51 in the negative direction of the Y-axis.

The switch module 50 responds to a first user operation, and the switch module 50 disconnects a signal path between the first charging coil 40 and the first wireless charging management chip 60. Specifically, the switch 52 is responsive to a first user operation to open the circuit between the first charging coil 40 and the first wireless charging management chip 60.

In the present embodiment, when the first battery 70 is in a full state, the user turns off the switch module 50 according to the full charge information of the protective case 100. At this time, the electronic apparatus 200 does not charge the first battery 70 of the protective case 100 any more. Thus, when the first battery 70 is in a fully charged state, the first charging coil 40 does not cause a current loss of the second battery 207 due to the re-generation of the alternating current.

In one embodiment, referring to fig. 14 to 16 again, after the user sees the charging reminder of the protective case 100 on the display screen 204, the user turns off the mechanical switch according to the charging reminder of the protective case 100. For example, the user slides the first key 51 in the negative direction of the Y-axis. In other words, the user has not selected to charge the protective case 100.

The charging method further includes:

the switch module 50 responds to the first user operation, and the switch module 50 disconnects the signal path between the first charging coil 40 and the first wireless charging management chip 60

In the present embodiment, by the above method, the switch module 50 of the protective case 100 may disconnect the circuit between the first charging coil 40 and the first wireless charging management chip 60 at the selection of the user, that is, the electronic device 200 does not charge the first battery 70 of the protective case 100 any more. At this time, the second battery 207 of the electronic device 200 does not increase the power consumption rate by continuously charging the protective case 100.

In one embodiment, the second processor 202 sends a first electrical signal to the second wireless charging management chip 206 when the switch module 50 responds to the first user operation.

In response to the first electrical signal, the second wireless charging management chip 206 is in an disabled state, i.e. the second wireless charging management chip 206 is in an inactive state. At this time, the current of the second battery 207 cannot be transmitted to the second charging coil 205 through the second wireless charging management chip 206.

In an embodiment, please refer to fig. 18, where fig. 18 is a schematic structural diagram of a protective case of the wireless charging system shown in fig. 1 according to still another embodiment. The protective case 100 further includes a detection coil 80. The detection coil 80 is mounted inside the case 30. The position and size of the detection coil 80 are not limited to those illustrated in fig. 18. The detection coil 80 is electrically connected to the first processor 20. The detection coil 80 may generate an alternating current under an alternating magnetic field.

the first processor 20 acquires a detection voltage, which is a voltage formed by the detection coil 80 under the second alternating magnetic field.

When the detected voltage is greater than or equal to the preset first voltage threshold, the first processor 20 sends a first electrical signal to the second processor 202.

It will be appreciated that the first voltage threshold is preset to a parameter value pre-stored in the first processor 20.

Referring to fig. 19, fig. 19 is a schematic diagram of another embodiment of the electronic device shown in fig. 4 in an operating state.

The second processor 202 controls the display screen 204 to display a warning message for opening the switch module 50 according to the first electrical signal.

The reminding information for opening the switch module 50 can be, but is not limited to, "close to the external magnetic field, please open the switch"

The switching module 50 is responsive to a first user operation to open the circuit between the first charging coil 40 and the first wireless charging management chip 60.

In one embodiment, the display screen 204 is provided with charging software. When the second processor 202 responds to the first electrical signal, the charging software is automatically turned on. The reminding information for turning off the switch module 50 is displayed on the operation interface of the charging software. After the user sees the reminding information of the disconnection switch module 50 on the display screen 204, the user disconnects the mechanical switch according to the reminding information of the disconnection switch module 50. For example, the user slides the first key 51 in the negative direction of the Y-axis. At this time, the switch 52 responds to a first user operation to open the circuit between the first charging coil 40 and the first wireless charging management chip 60.

In this embodiment, when the electronic device 200 is charging the first battery 70, if the detection coil 80 generates the detection voltage under the second alternating magnetic field and the detection voltage is greater than or equal to the preset first voltage threshold, the user turns off the switch module 50 according to the reminding information, that is, the electronic device 200 does not charge the first battery 70 of the protective case 100. Like this, under the stronger second alternating magnetic field of magnetic field intensity, the first charging coil 40 of protective housing 100 can not produce great alternating current to avoid first wireless core piece 60 to take place to damage.

In the second embodiment, the same technical contents as those in the first embodiment are not described again.

Referring to fig. 20 and 21, fig. 20 is a schematic structural diagram of another embodiment of a wireless charging system according to an embodiment of the present disclosure. Fig. 21 is a schematic structural diagram of an embodiment of a protective case of the wireless charging system shown in fig. 20. The wireless charging system 1000 includes a protective case 100, an electronic device 200, and a charging cradle 300. The structures of the protective case 100 and the electronic device 200 are the same as those of the protective case 100 and the electronic device 200 of the first embodiment, and are not described again here. In the present embodiment, the protective case 100 further includes the detection coil 80. The number, position and size of the detection coils 80 are not limited to four, as illustrated in fig. 21.

It is understood that the cradle 300 is used to wirelessly charge the protective case 100 or the electronic device 200. Cradle 300 encloses cradle coil 301. The base coil 301 is used to generate an alternating magnetic field on an alternating current.

In the following embodiments, a charging method of the wireless charging system 1000 according to the second embodiment of the present application is specifically described based on the structure of the wireless charging system 1000 shown in fig. 20 and 21.

In a first embodiment, the switch module 50 is an electronic switch. The switch module 50 is electrically connected to the first processor 20. The structure of the switch module 50 can be referred to the structure of the switch module 50 of the first embodiment. And will not be described in detail herein.

Referring to fig. 22 in conjunction with fig. 20 and 21, fig. 22 is a flowchart illustrating an embodiment of a charging method of the wireless charging system shown in fig. 20.

The charging method comprises the following steps:

s100: the base coil 301 is energized and generates a second alternating magnetic field.

It will be appreciated that when the cradle 300 is in the powered state, an alternating current is transmitted to the cradle coil 301. The base coil 301 generates a second alternating magnetic field.

S200: the first processor 20 acquires the detection voltage. The detection voltage is a voltage formed by the detection coil 80 under the second alternating magnetic field generated by the charging stand 300.

It can be understood that, specifically, when the protective case 100 sleeved outside the electronic device 200 is close to the second alternating magnetic field, the detection coil 80 generates a second alternating current under the second alternating magnetic field. At this time, the detection coil 80 has a detection voltage. The first processor 20 acquires the detection voltage.

In one embodiment, a third wireless charging management chip is connected between the first processor 20 and the detection coil 80. The third wireless charging management chip converts the second alternating current generated by the detection coil 80 into a direct current. In addition, the third wireless charging management chip acquires the converted voltage. The third wireless charging management chip sends the signal with the voltage to the first processor 20. The first processor 20 receives the signal and derives a voltage from the signal, i.e. a detected voltage.

S300: when the detected voltage is greater than or equal to the preset first voltage threshold, the first processor 20 sends a first signal to the second processor 202;

it will be appreciated that the first voltage threshold is preset to a parameter value pre-stored by the first processor 20. In addition, when the detected voltage is greater than or equal to the preset first voltage threshold, the protective case 100 and the protective case 100 sleeved outside the electronic device 200 are close to the charging stand 300 to a greater extent.

Referring to fig. 23, fig. 23 is a schematic view illustrating an operating state of the electronic device of the wireless charging system shown in fig. 20.

S400: the second processor 202 responds to the first signal and controls the display screen 204 to display an electronic device charging icon and a protective case charging icon.

In one embodiment, the display screen 204 is provided with charging software. When the second processor 202 responds to the first signal, the charging software is automatically turned on. And displaying an electronic equipment charging icon and a protective shell charging icon on an operation interface of the charging software.

For example: the electronic device charging icon may be, but is not limited to, an icon for "electronic device charging". The case charge icon may be, but is not limited to, an icon that is "case charge".

It is understood that the positions and sizes of the electronic device charging icon and the protective case charging icon are not limited to those illustrated in fig. 23.

Referring to fig. 24, fig. 24 is a schematic view of an embodiment of the wireless charging system shown in fig. 20 during a charging process.

S500: the second processor 202 receives the first touch signal sent by the display screen 204, sends a second signal to the first processor 20, and sends a first control signal to the second wireless charging management chip 206. The first touch signal is a signal generated by the display screen 204 when the charging icon of the electronic device 200 is triggered.

Specifically, the user clicks the electronic device charging icon. The display screen 204 generates a first touch signal according to a clicking action of a user.

In one embodiment, the second processor 202 sends the second signal to the first processor 20 through the first bluetooth communication module 91 and the second bluetooth communication module 201.

S600: the first processor 20 receives the second signal and sends a first trigger signal to the switch module 50 according to the second signal.

S700: the switching module 50 responds to the first trigger signal, and the switching module 50 disconnects the signal path between the first charging coil 40 and the first wireless charging management chip 60. At this time, the alternating current generated by the first charging coil 40 under the second alternating magnetic field is almost zero. Fig. 24 illustrates the transmission direction of the first trigger signal by a dashed line with an arrow. In addition, fig. 24 illustrates, by a dotted line, that no current is transmitted between the first charging coil 40, the switch module 50, the first wireless charging coil 60, and the first battery 70.

S800: in response to the first control signal, the second wireless charging management chip 206 is in an enabled state, that is, the second wireless charging management chip 206 is in an operating state. At this time, the second battery 207, the second wireless charging management chip 206 and the second charging coil 205 form a signal path. In addition, the second wireless charging management chip 206 is switched to an input state, that is, the second wireless charging management chip 206 can receive the alternating current transmitted from the second charging coil 205. Fig. 24 illustrates the transmission direction of the first control signal by a dotted line with an arrow.

S900: the second charging coil 205 generates a first alternating current under a second alternating magnetic field.

S1000: the second wireless charging management chip 206 converts the first alternating current into a first direct current, and the first direct current is transmitted to the second battery 207, that is, the second battery 207 is in a charging state. Fig. 24 illustrates transmission paths of electric currents in the electronic apparatus 200 by solid lines with arrows.

In the present embodiment, through S100 to S1000, when the user selects the charging dock 300 to charge the electronic device 200, the switch module 50 of the protective case 100 can be automatically turned off. At this time, when the charging dock 300 charges the electronic device 200, the protective case 100 does not affect the normal charging of the electronic device 200, thereby ensuring that the electronic device 200 can be charged quickly.

In addition, since the switching module 50 opens the signal path between the first charging coil 40 and the first wireless charging management chip 60, the alternating current generated by the first charging coil 40 under the second alternating magnetic field generated by the charging coil 301 is almost zero. In other words, the loss of the second alternating magnetic field generated by the charging coil 301 by the protective case 100 is almost zero, i.e. the energy loss of the base coil 301 is low.

In this embodiment, when the electronic device 200 with the protective case 100 is close to the charging dock 300 and the power of the second battery 207 of the electronic device 200 is low, the switch module 50 is turned off automatically, so that the charging dock 300 charges the electronic device 200 automatically, thereby ensuring that the electronic device 200 has enough power to provide the power to the functional devices in the electronic device 200.

In other embodiments, the first trigger signal is not limited to be generated through S400 to S600, and the first trigger signal may also be generated through the following embodiments. The details are as follows.

When the detected voltage is greater than or equal to the preset first voltage threshold, the second processor 202 responds to the first signal and obtains the voltage of the second battery 207;

when the voltage of the second battery 207 is smaller than the preset fourth voltage threshold, the second processor 202 sends a first trigger signal to the first processor 20, and the first processor 20 receives the first trigger signal and sends the first trigger signal to the switch module 50.

In other embodiments, the display screen 204 displaying the electronic device charging icon and the protective case charging icon is not limited to be implemented through S100 to S400, and may be generated through the following embodiments. The detailed description is as follows:

the first processor 20 acquires the detection voltage;

When the detected voltage is greater than or equal to the preset first voltage threshold, the second processor 202 controls the display screen 204 to display an electronic device charging icon and a protective case charging icon.

In one embodiment, after the S1000 converting the first alternating current into the first direct current by the second wireless charging management chip 206, and transmitting the first direct current to the second battery 207, the charging method further includes:

Specifically, the user turns on the charging software. And displaying an electronic equipment charging icon and a protective shell charging icon on an operation interface of the charging software. The user clicks the protective case charging icon. The case charge icon may be, but is not limited to, an icon of "charge the case". The display screen 204 generates a second touch signal according to the clicking action of the user, and sends the second touch signal to the second processor 202. The second processor 202 sends the third signal to the first processor 20 through the first bluetooth communication module 91 and the second bluetooth communication module 201.

The first processor 20 is responsive to the third signal and sends a second trigger signal to the switch module 50. The switch module 50 conducts a signal path between the first charging coil 40 and the first wireless charging management chip 60.

The first charging coil 40 generates an alternating current under the second alternating magnetic field, and the alternating current is transmitted to the first wireless charging management chip 60.

The first wireless charge management chip 60 converts the alternating current into a direct current to charge the first battery 70.

It can be appreciated that, in the above manner, the wireless charging device 1000 may charge the protective case 100 according to the selection of the user, thereby improving the user experience of the wireless charging system 1000.

In one embodiment, please refer to fig. 25 and 26, fig. 25 is a flowchart illustrating a charging method of the wireless charging system shown in fig. 20 according to another embodiment. Fig. 26 is a schematic diagram of another embodiment of the wireless charging system shown in fig. 20 during a charging process. The charging method further includes, but is not limited to, S1100 to S1600. S1100 to S1600 are optional steps subsequent to S100 and S400 described above. The charging method of the present embodiment is the same as the charging method of the above embodiments in part, and details are not repeated. Details of S1100 and S1600 are as follows.

S1100: the second processor 202 receives the second touch signal sent by the display screen 204, sends a third signal to the first processor 20, and sends a second control signal to the second wireless charging management chip 206. The second touch signal is a signal generated when the display screen 204 is triggered when the charging icon of the protective case 100 is triggered.

Specifically, the user clicks the protective case charging icon. The display screen 204 generates a second touch signal according to the clicking action of the user.

In one embodiment, the second processor 202 sends the third signal to the first processor 20 through the first bluetooth communication module 91 and the second bluetooth communication module 201.

S1200: in response to the second control signal, the second wireless charging management chip 206 is in an disabled state, i.e. the second wireless charging management chip 206 is in an inactive state. Fig. 26 illustrates the transmission direction of the second control signal by a dotted line with an arrow.

At this time, the second battery 207, the second wireless charging management chip 206 and the second charging coil 205 are in an open circuit state, that is, current cannot be transmitted from the second charging coil 205 to the second battery 207. Fig. 26 illustrates by a dotted line that there is no current transmission between the second battery 207, the second wireless charging management chip 206 and the second charging coil 205.

S1300: the first processor 20 receives the third signal and sends a second trigger signal to the switch module 50 according to the third signal.

In this embodiment, the second trigger signal is a low level signal.

S1400: the switch module 50 responds to the second trigger signal, and the switch module 50 conducts the circuit between the first charging coil 40 and the first wireless charging management chip 60. Fig. 26 illustrates the transmission direction of the second trigger signal by a dashed line with an arrow.

S1500: the first charging coil 40 generates a second alternating current under a second alternating magnetic field;

s1600: the first wireless charge management chip 60 converts the second alternating current into a second direct current, which is transmitted to the first battery 70. Fig. 26 illustrates a transmission path of current in the protective case 100 by a solid line with an arrow.

In the present embodiment, through S1100 to S1600, when the user selects the charging dock 300 to charge the protective case 100, the switch module 50 of the protective case 100 can be automatically turned on, and the second wireless charging management chip 206 of the electronic device 200 is in an disabled state. At this time, when the charging stand 300 charges the protective case 100, the electronic device 200 does not affect the normal charging of the protective case 100, thereby ensuring that the protective case 100 can be charged quickly.

In one embodiment, after the first wireless charging management chip 60 converts the first alternating current into the first direct current and transmits the first direct current to the first battery 70 at S1600, the charging method further includes:

the first processor 20 obtains the voltage of the first battery 70.

When the voltage of the first battery 70 is greater than or equal to the preset third voltage threshold, the first processor 20 sends a first trigger signal to the switch module 50 to turn off the switch module 50.

In this embodiment, the first trigger signal is at a high level. In other embodiments, the first trigger signal may also be a low level signal. The specific configuration may depend on the circuit configuration of the switch module 50.

In the present embodiment, when the first battery 70 is in a full state, the first processor 20 sends a first trigger signal to the switch module 50 to cause the switch module 50 to disconnect a signal path between the first charging coil 40 and the first wireless charging management chip 60. At this time, the electronic apparatus 200 does not charge the first battery 70 of the protective case 100 any more. Thus, when the first battery 70 is in a fully charged state, the first charging coil 40 does not cause a current loss of the second battery 207 due to the re-generation of the alternating current.

In the second embodiment, the same technical contents as those in the first embodiment are not described again: referring to fig. 27 to 29, fig. 27 is a schematic structural view of another embodiment of a protective shell of the wireless charging system shown in fig. 20. Fig. 28 is a schematic diagram of the electronic device of the wireless charging system shown in fig. 20 in an operating state. Fig. 29 is a flowchart illustrating another embodiment of a charging method of the wireless charging system shown in fig. 20. The switch module 50 is a mechanical switch. The configuration of the switch module 50 of the present embodiment is the same as the configuration of the switch module 50 of the second embodiment of the first embodiment. And will not be described in detail herein.

S200: the first processor 20 acquires the detection voltage. The detection voltage is a voltage formed by the detection coil 80 under the second alternating magnetic field generated by the charging stand 300. The detailed implementation of this step can be referred to S200 of the first implementation of the second embodiment.

S300: when the detected voltage is greater than or equal to the preset first voltage threshold, the first processor 20 sends a first signal to the second processor 202; the detailed implementation of this step can be referred to S300 of the first implementation of the second embodiment.

For example: the electronic device charging icon may be, but is not limited to, an icon for "electronic device charging". The case charge icon may be, but is not limited to, an icon that is "case charge". After the user sees the electronic device charging icon and the protective case charging icon on the display screen 204, the user selects to turn on or off the switch module 50 according to the two icons. For example, the user slides the first button 51 along the negative direction of the Y-axis to turn off the switch module 50, i.e. the user selects the cradle 300 to charge the electronic device 200. The user slides the first button 51 along the positive direction of the Y-axis to close the switch module 50, i.e. the user selects the charging stand 300 to charge the protective case 100. In this case, in the present embodiment, the longitudinal direction of the protective case 100 is the Y axis. The width direction of the protective case 100 is the X axis.

S500: the switch module 50 responds to a first user operation, and the switch module 50 disconnects a signal path between the first charging coil 40 and the first wireless charging management chip 60.

Specifically, when the first button 51 slides in the Y-axis negative direction, the switch 52 opens the circuit between the first charging coil 40 and the first wireless charging management chip 60. In other words, the user selects the cradle 300 to charge the electronic device 200.

S600: the second processor 202 sends a first control signal to the second wireless charging management chip 206.

S700: in response to the first control signal, the second wireless charging management chip 206 is in an enabled state, that is, the second wireless charging management chip 206 is in an operating state. At this time, the second battery 207, the second wireless charging management chip 206 and the second charging coil 205 form a signal path. In addition, the second wireless charging management chip 206 is switched to an input state, that is, the second wireless charging management chip 206 can receive the wireless charging signal transmitted from the second charging coil 205, that is, the second alternating current.

S800: the second charging coil 205 generates a first alternating current under a second alternating magnetic field.

S900: the second wireless charging management chip 206 converts the first alternating current into a first direct current, and the first direct current is transmitted to the second battery 207, that is, the second battery 207 is in a charging state.

In the present embodiment, through steps S100 to S900, cradle 300 can charge electronic device 200 at the selection of the user. The charging method has good controllability and high user experience.

In addition, in the process of charging the electronic device 200 by the charging stand 300, the switch module 50 of the protective case 100 is controlled to be turned off, so that the protective case 100 does not affect the normal charging of the electronic device 200, thereby ensuring that the electronic device 200 can be charged quickly.

In addition, since the switching module 50 opens the signal path between the first charging coil 40 and the first wireless charging management chip 60, the alternating current generated by the first charging coil 40 under the second alternating magnetic field generated by the charging coil 301 is almost zero. In other words, the loss of the second alternating magnetic field generated by the charging coil 301 by the protective case 100 is almost zero, i.e. the energy loss of the charging coil 301 is low.

In one embodiment, referring again to fig. 27 and 28, after the user sees the electronic device charging icon and the protective case charging icon on the display screen 204, the user selectively turns on or off the switch module 50 according to the two icons. Specifically, when the first key 51 slides in the positive Y-axis direction, the switch 52 turns on the circuit between the first charging coil 40 and the first wireless charging management chip 60. In other words, the user selects the charging cradle 300 to charge the protective case 100.

The charging method further includes:

in response to the second control signal, the second wireless charging management chip 206 is in an disabled state, i.e. the second wireless charging management chip 206 is in an inactive state.

At this time, the second battery 207, the second wireless charging management chip 206 and the second charging coil 205 are in an open circuit state, that is, current cannot be transmitted from the second charging coil 205 to the second battery 207.

The switch module 50 responds to the second user operation, and the switch module 50 conducts a signal path between the first charging coil 40 and the first wireless charging management chip 60.

Specifically, when the first button 51 slides in the positive Y-axis direction, the switch 52 turns on the signal path between the first charging coil 40 and the first wireless charging management chip 60.

The first charging coil 40 forms a second alternating current under the second alternating magnetic field generated by the charging cradle 300 and transmits the second alternating current to the first wireless charging management chip 60.

The first wireless charge management chip 60 converts the second alternating current into a second direct current, which is transmitted to the first battery 70. At this time, the first battery 70 is in a charged state.

In one embodiment, after the first wireless charging management chip 60 converts the second alternating current into the second direct current, and the second direct current is transmitted to the first battery 70, the charging method further includes:

the first processor 20 obtains the voltage of the first battery 70.

When the voltage is greater than or equal to the preset third voltage threshold, the first processor 20 sends a first signal to the second processor 202.

The second processor 202 controls the display screen 204 to display the information that the protective case 100 is fully charged according to the first signal.

The full charge of the protective case 100 may be, but is not limited to, "the protective case is full, please turn off the switch".

The switching module 50 is responsive to a first user operation to open a signal path between the first charging coil 40 and the first wireless charging management chip 60.

Specifically, after the user sees the information that the protective case 100 is fully charged on the display screen 204, the user turns off the mechanical switch according to the information that the protective case 100 is fully charged. For example, the user slides the switch module 50 in the negative direction of the Y-axis. At this time, the switching module 50 responds to a first user operation to open the circuit between the first charging coil 40 and the first wireless charging management chip 60.

In the present embodiment, when the first battery 70 is in a full state, the user turns off the switch module 50 according to the full charge information of the protective case 100. At this time, the electronic apparatus 200 does not charge the first battery 70 of the protective case 100 any more. Thus, when the first battery 70 is fully charged, the first charging coil 40 will not generate an alternating current to cause the energy loss of the charging cradle 300.

In the third embodiment, the same contents as those in the first and second embodiments are not repeated: referring to fig. 30, fig. 30 is a schematic structural diagram of another embodiment of a protective shell of the wireless charging system shown in fig. 20. The protective case 100 also includes a sensor 92. The sensor 92 is used to detect the magnetic field strength. It will be appreciated that the sensor 92 is a hall sensor or compass. In the present embodiment, the first processor 20 sends the first signal to the second processor 202 is not limited to the generation of S200 to S300 in the first embodiment, and the first signal may be generated by the following embodiments. The details are as follows.

The first processor 20 acquires the magnetic field strength of the second alternating magnetic field. Wherein the magnetic field strength is the strength of the second alternating magnetic field detected by the sensor 92.

Specifically, when the electronic device 200, in which the protective case 100 is fitted, is close to the second alternating magnetic field, the sensor 92 detects the magnetic field intensity of the second alternating magnetic field. The sensor 92 sends a signal carrying the magnetic field strength to the first processor 20. The first processor 20 acquires the signal and identifies the strength of the second alternating magnetic field.

When the detected magnetic field strength is greater than or equal to the preset magnetic field strength threshold, the first processor 20 sends a first signal to the second processor 202.

It will be appreciated that the predetermined threshold magnetic field strength value is a parameter value pre-stored on the first processor 20.

In this embodiment, the sensor 92 is used for detecting the magnetic field intensity, and can detect whether the charging stand 300 is close to the protective casing 100, so that the protective casing 100 can be charged or the electronic device 100 can be charged by controlling the on and off of the switch module 50.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The charging method of the wireless charging system is characterized in that the wireless charging system comprises a protective shell and electronic equipment, wherein the protective shell comprises a first charging coil, a first wireless charging management chip, a detection module and a first Bluetooth communication module; the electronic equipment comprises a second charging coil, a second wireless charging management chip, a second Bluetooth communication module and a second battery, wherein the second wireless charging management chip is connected between the second charging coil and the second battery;

the charging method comprises the following steps:

responding to a first input of the first prompt message by a user, and transmitting a second signal to the protective shell by the electronic equipment through the second Bluetooth communication module;

in response to the second signal, the protective case disconnecting a signal path between the first charging coil and the first wireless charging management chip;

2. The charging method of a wireless charging system according to claim 1,

the responding to the wireless charging signal detected by the detection module comprises:

responding to the fact that the voltage of the wireless charging signal detected by the detection module is larger than or equal to a preset first voltage threshold value, or,

the magnetic field intensity of the wireless charging signal detected by the detection module is larger than or equal to a preset magnetic field intensity threshold value.

3. The charging method of the wireless charging system according to claim 1 or 2, wherein the protective case comprises a switch module, and the switch module is connected between the first charging coil and the first wireless charging management chip;

in response to the second signal, the protective case disconnects a signal path between the first charging coil and the first wireless charging management chip through the switch module.

4. The charging method of the wireless charging system according to claim 1 or 2, wherein the protective case further comprises a first battery and a functional module,

the first battery is configured to supply power to the functional module.

5. The charging method of the wireless charging system is characterized in that the wireless charging system comprises a protective shell and electronic equipment, wherein the protective shell comprises a first charging coil and a first wireless charging management chip; the electronic equipment comprises a second charging coil, a second wireless charging management chip and a second battery, wherein the second wireless charging management chip is connected between the second charging coil and the second battery;

the charging method comprises the following steps:

the second charging coil is coupled with a wireless charging signal transmitted by the wireless charging equipment;

6. The charging method of a wireless charging system according to claim 5, wherein the protective case further comprises a first battery and a functional module,

the first battery is configured to supply power to the functional module.

7. The charging method of the wireless charging system according to claim 6, wherein the protective case further comprises a first bluetooth communication module, the electronic device further comprises a second bluetooth communication module, and the function module is a key;

the charging method further comprises:

receiving a first operation acting on the key;

8. The charging method of the wireless charging system according to any one of claims 5 to 7, wherein the protective case further comprises a first Bluetooth communication module, and the electronic device further comprises a second Bluetooth communication module;

the charging method further comprises:

9. The charging method of the wireless charging system according to claim 8, wherein the protective case further includes a detection module;

the charging method further comprises:

detecting a wireless charging signal transmitted by the wireless charging equipment through the detection module;

responding to the wireless charging signal detected by the detection module, and transmitting a first signal to the electronic equipment by the protective shell through the first Bluetooth communication module;

and responding to the first input of the first prompt message by the user, and sending a second signal to the protective shell by the electronic equipment through the second Bluetooth communication module.

10. The charging method of a wireless charging system according to claim 9,

11. A charging method of a wireless charging system is characterized in that the wireless charging system comprises a protective shell and an electronic device, wherein the protective shell comprises a first charging coil, a first wireless charging management chip and a first battery, and the first wireless charging management chip is connected between the first charging coil and the first battery; the electronic equipment comprises a second charging coil, a second wireless charging management chip and a second battery, wherein the second wireless charging management chip is connected between the second charging coil and the second battery;

the charging method comprises the following steps:

coupling, by the first charging coil, a wireless charging signal emitted by the second charging coil;

the protective shell charges the first battery according to the wireless charging signal, wherein a signal path between the first wireless charging management chip and the first charging coil is conducted;

12. The charging method of the wireless charging system according to claim 11, wherein the protective shell charges the first battery according to the wireless charging signal, and wherein a signal path between the first wireless charging management chip and the first charging coil is turned on, comprising:

in response to a first operation of a user, the electronic device sends a second signal to the protective shell;

13. The charging method of the wireless charging system according to claim 12,

the charging method further comprises:

detecting the voltage or the electric quantity of the first battery;

when the voltage of the first battery is greater than a preset third voltage threshold value, or the electric quantity of the first battery is greater than a preset second electric quantity threshold value, the protective shell disconnects a signal path between the first wireless charging management chip and the first charging coil, wherein the preset third voltage threshold value is greater than the preset second voltage threshold value, and the preset second electric quantity threshold value is greater than the preset first electric quantity threshold value.

14. The charging method of the wireless charging system according to any one of claims 11 to 13, wherein the protective case comprises a switch module, the switch module is connected between the first charging coil and the first wireless charging management chip;

15. The charging method of the wireless charging system according to any one of claims 11 to 13, wherein the protective case further includes a function module;

the first battery is configured to supply power to the functional module.

16. The charging method of the wireless charging system according to claim 15, wherein the protective case further comprises a first bluetooth communication module, the electronic device further comprises a second bluetooth communication module, and the function module is a key;

the charging method further comprises:

receiving a first operation acting on the key;

17. A protective shell is characterized by comprising a first charging coil, a switch module, a first wireless charging management chip and a first battery, wherein the switch module is connected between the first charging coil and the first wireless charging management chip, and the first battery is connected with the first wireless charging management chip;

when a signal path between the first charging coil and the first wireless charging management chip is conducted through the switch module, the first charging coil can be coupled to a wireless charging signal, and the first battery is charged according to the wireless charging signal;

when the electronic equipment is arranged on the protective shell in a sleeved mode, and the electronic equipment provided with the protective shell is charged through the wireless charging equipment, a signal path between the first charging coil and the first wireless charging management chip is disconnected.

18. A protective case according to claim 17, further comprising a functional module; the first battery is configured to supply power to the functional module.

19. The protective case of claim 18, wherein the functional module is a key, the protective case further comprising a first processor, the key electrically connected to the first processor;

the key is used for receiving user input;

the first processor is used for sending a first operation signal acting on the key to the electronic equipment so as to enable the electronic equipment to respond to the first operation signal.

20. A protective case according to any one of claims 17 to 19, wherein the protective case comprises a first bluetooth communication module, the protective case communicating with the electronic device via the first bluetooth communication module.

21. A protective casing according to any one of claims 17 to 19,

the protective shell comprises a detection coil;

the detection coil is used for detecting a wireless charging signal emitted by the wireless charging equipment;

and responding to the wireless charging signal detected by the detection coil, and disconnecting a signal path switch module between the first charging coil and the first wireless charging management chip through the switch module.

22. The protective case of claim 21, wherein the number of the detection coils is at least two, the at least two detection coils being located at a periphery of the first charging coil.

23. A protective casing according to any one of claims 17 to 19 comprising a sensor for detecting the strength of the magnetic field;

disconnecting, by the switch module, a signal path between the first charging coil and the first wireless charging management chip in response to the magnetic field strength detected by the sensor.

24. The protective case of claim 23, wherein the sensor comprises a hall sensor or a compass.