CN114552737A

CN114552737A - Charging method based on Type-C interface, charging equipment and equipment to be charged

Info

Publication number: CN114552737A
Application number: CN202210342456.0A
Authority: CN
Inventors: 童彦彰
Original assignee: Huayi Semiconductor Shenzhen Co ltd
Current assignee: Huayi Semiconductor Shenzhen Co ltd
Priority date: 2021-04-08
Filing date: 2022-04-02
Publication date: 2022-05-27

Abstract

The invention provides a charging method, charging equipment and equipment to be charged based on a Type-C interface. The charging method performed on the charging device side includes: d, establishing a special communication link with the equipment to be charged through a DP pin and a DN pin of the Type-C interface; step E, receiving the charging requirement information of the equipment to be charged through a special communication link; step F, determining a charging strategy for the equipment to be charged according to the charging demand information; and G, charging the equipment to be charged through a VBUS pin in the Type-C interface according to the charging strategy. According to the invention, the special communication links connected to the DP and DN of the Type-C interface are started to communicate the high-power charging information, so that the charging equipment can determine the charging strategy of the equipment to be charged according to the charging demand information, and a novel implementation mode is provided for the communication of the high-power charging information.

Description

Charging method based on Type-C interface, charging equipment and equipment to be charged

Technical Field

The invention relates to the technical field of charging, in particular to a charging method, charging equipment and equipment to be charged based on a Type-C interface.

Background

Under the current USB charging standard, the highest charging power can only reach 100W, but many electronic products need higher charging wattage, generally cannot be charged by direct current, and must receive commercial power charging using alternating current, so that the circuit cost of converting alternating current into direct current is increased; some special charging specifications are customized and are charged by using a special power line, although the purpose of quick charging is achieved, extra huge equipment cost is not increased as much as possible, the established specifications can only be used by own products and cannot supply power to other electronic products, so that resource waste is caused, and the product design is improved by the requirement of the specification of each country.

Disclosure of Invention

Technical problem to be solved

The present invention is intended to solve at least one of the above technical problems at least in part.

(II) technical scheme

In order to achieve the above object, according to a first aspect of the present invention, there is provided a charging method based on a Type-C interface. The charging method is executed on the charging equipment side and comprises the following steps:

d, establishing a special communication link with the equipment to be charged through a DP pin and a DN pin of the Type-C interface;

step E, receiving the charging requirement information of the equipment to be charged through a special communication link;

step F, determining a charging strategy for the equipment to be charged according to the charging demand information;

and G, charging the equipment to be charged through a VBUS pin in the Type-C interface according to the charging strategy.

In some embodiments of the present invention, step D is preceded by:

step A, setting a standard potential of a CC pin of a Type-C interface according to the maximum charging power of charging equipment;

b, detecting the potential of a DP pin and a DN pin of the Type-C interface;

step C, judging whether the following conditions are met: and D-G is executed if the electric potentials of the DP pin and the DN pin are both high electric potentials, if so, the equipment to be charged is judged to be high-power equipment to be charged.

In some embodiments of the present invention, in step C, the high potential refers to: and logically judging high potential in the Type-C interface.

In some embodiments of the present invention, the high power device to be charged is a device to be charged that can accept charging power of more than 30W.

In some embodiments of the invention, step a comprises: when the maximum charging power of the charging equipment is less than 100W, the standard potential of the CC pin takes a value from 1.6V to 1.8V; when the maximum charging power of the charging equipment is more than or equal to 100W and less than 300W, the standard potential of the CC pin takes a value from 1.8V to 2.0V; when the maximum charging power of the charging equipment is larger than 300W, the standard potential of the CC pin is above 2.0V.

In some embodiments of the invention, the charging requirement information comprises: equipment type information, current electric quantity information and charging voltage threshold value information; the step F comprises the following steps: when the device to be charged is judged to be of the battery type according to the device type information, the charging strategy comprises the following steps: when the current electric quantity of the equipment to be charged is smaller than a first electric quantity threshold value, charging the equipment to be charged in a low-current awakening mode; when the current electric quantity of the equipment to be charged is greater than or equal to the first electric quantity threshold value and is smaller than the second electric quantity threshold value, charging the equipment to be charged in a constant current mode; and when the current electric quantity of the equipment to be charged is greater than or equal to the second electric quantity threshold value, charging the equipment to be charged by adopting a constant voltage mode.

In some embodiments of the invention, step F comprises: when the device to be charged is judged to be a non-battery type according to the device type information, the charging strategy comprises the following steps: and charging the equipment to be charged by adopting a constant voltage mode.

In some embodiments of the present invention, when it is determined from the device type information that the device to be charged is a lithium battery: the first charge amount threshold is set to a value within the following range: 5% -15%; the second charge threshold is set to a value in the following range: 50 to 80 percent.

In some embodiments of the present invention, in the constant current mode, the charging current is set to satisfy a maximum current that the charging device can supply without exceeding a charging voltage threshold of the device to be charged.

In some embodiments of the present invention, in the constant voltage mode, the charging voltage is less than or equal to the charging voltage threshold of the device to be charged.

In some embodiments of the invention, N devices to be charged are provided, wherein N is more than or equal to 2; the step D comprises the following steps: establishing special communication links with N devices to be charged respectively through a DP pin and a DN pin of a Type-C interface; the step E comprises the following steps: substep E1, sending a request for charging requirement information for the N devices to be charged; substep E2, receiving charging requirement information of the N devices to be charged one by one, where the charging requirement information includes: and the device identification code of the equipment to be charged.

In some embodiments of the invention, step F comprises: grouping N1 to-be-charged equipment into a group, and determining a group-specific charging strategy according to the charging demand information of N1 to-be-charged equipment, wherein N1 is less than N; wherein the grouping basis is one or more of the following information of the device to be charged: device type information, charging voltage threshold information and current electric quantity information; in the group, when the charging voltage threshold values of N1 devices to be charged are the same, the charging voltage in the charging strategy is set as the charging voltage threshold value; or when the charging voltage thresholds of the N1 devices to be charged are not the same, the charging voltage in the charging strategy is set to the lowest value of the charging voltage thresholds of the N1 devices to be charged; the step G comprises the following steps: connecting VBUS pins of Type-C interfaces of charging equipment corresponding to N1 pieces of equipment to be charged in the group together, and charging N1 pieces of equipment to be charged in the group according to the charging strategy aiming at the group.

In some embodiments of the invention, a charging device comprises: the voltage detector is used for detecting the voltage of the CC pin in real time; the standard voltage regulating circuit is used for regulating the voltage of the CC pin; step D also comprises the following steps: step A, setting a standard potential of a CC pin of a Type-C interface according to the maximum charging power of charging equipment; and step A', when the voltage detector detects that the potential of the CC pin is lower than or higher than the standard potential, the potential of the CC pin is kept at the standard potential through the standard voltage regulating circuit.

In some embodiments of the invention, a standard voltage regulation circuit comprises: the digital voltage follower is connected with the CC pin; the step of keeping the potential of the CC pin at the standard potential by the standard voltage regulating circuit comprises: and the potential of the CC pin is kept at the standard potential through a digital voltage follower.

In some embodiments of the invention, a standard voltage regulation circuit comprises: the pull-up variable resistor is connected between the CC pin and the VDD of the Type-C interface; an impedance controller for controlling the pull-up variable resistor; the step of keeping the potential of the CC pin at the standard potential through the standard voltage regulating circuit comprises the following steps: the impedance controller controls the pull-up variable resistor to keep the potential of the CC pin at a standard potential.

In some embodiments of the invention, a charging device comprises: an electrical energy store; step G is followed by: and L, monitoring the current of the VBUS pin in real time, when the current is abnormal, carrying out current limiting and then interruption operation on the current of the VBUS pin, and introducing the current of the VBUS into the electric energy storage before interruption.

In some embodiments of the invention, a charging device comprises: an electrical energy store; step G is followed by: and step N, monitoring the voltages of pins CC1 and CC2 in real time, when the voltages are abnormal, carrying out current limiting and then interruption operation on the current of the VBUS pin, and introducing the current of the VBUS into the electric energy storage before interruption.

In some embodiments of the invention, a charging device comprises: an electrical energy store; step G is followed by: the charging demand information includes: battery temperature information; and step M, monitoring the battery temperature of the equipment to be charged in real time through a special communication link, when the battery temperature is abnormal, carrying out current limiting and then interrupting operation on the current of the VBUS pin, and introducing the current of the VBUS into the electric energy storage before interruption.

In some embodiments of the present invention, step F is preceded by: acquiring information of an E-marker in a charging cable through a CC pin connected with the E-marker in a Type-C interface; step F also includes: if the charging cable is not provided with an E-marker, adjusting corresponding parameters in a charging strategy to enable the charging power to be less than 30W; or if the charging cable is provided with the E-marker, and the charging parameter of the E-marker is smaller than the corresponding parameter in the charging parameters, adjusting the corresponding parameter in the charging strategy to enable the charging parameter to meet the charging parameter of the E-marker.

In order to achieve the above object, according to a second aspect of the present invention, there is also provided a charging device based on a Type-C interface. The charging device includes: a memory having instructions stored therein; and a controller, electrically coupled to the memory, configured to perform the charging method based on instructions stored in the memory.

In some embodiments of the invention, the charging device is one of the following group: power adapter, fill electric pile, the screen equipment that can output power, electronic equipment that can output power, power output device.

In some embodiments of the invention, the device to be charged is: an indirect power utilization device or a direct power utilization device; the indirect electric equipment is one of the following groups: the mobile terminal comprises a mobile terminal, a tablet computer, a notebook computer, an electric bicycle and an electric automobile; the direct consumer is one of the following group: electric lamps, electric hair dryers, electric rice cookers, electric drills, electric tools.

In order to achieve the above object, according to a first aspect of the present invention, there is provided a charging method based on a Type-C interface. The charging method is executed on the side of the equipment to be charged and comprises the following steps: step S406, establishing a special communication link with the charging equipment through a DP pin and a DN pin of the Type-C interface; step S408, sending self charging demand information to the charging equipment through a special communication link; and step S410, receiving the charging of the charging equipment through a VBUS pin in the Type-C interface.

In some embodiments of the present invention, step S210 is preceded by: step S402, connecting the DP pin and the DN pin of the Type-C interface to a high potential through a pull-up resistor; and S404, detecting the potential of a CC pin in the Type-C interface, and obtaining the maximum charging power of the charging equipment according to the potential of the CC pin.

In some embodiments of the present invention, step S410 is followed by: step S412, during the charging process, sending real-time status information of the charging device to the charging device through the ad hoc communication link, where the real-time status information includes one of the following information: battery temperature information, interrupt request, current power information.

In order to achieve the above object, according to a second aspect of the present invention, there is also provided a device to be charged based on a Type-C interface. This equipment of waiting to charge includes: a memory having instructions stored therein; and a controller, electrically coupled to the memory, configured to perform the charging method based on instructions stored in the memory.

(III) advantageous effects

According to the technical scheme, the invention has at least one of the following beneficial effects:

(1) the charging method and the charging system have the advantages that the charging requirement information cannot be communicated between the charging side and the charged side due to the fact that the control of high-power charging is not involved in the current USB Type-C related specification, and the special communication links connected to the DP and DN of the Type-C interface are started to communicate the high-power charging information, so that the charging equipment can determine the charging strategy of the equipment to be charged according to the charging requirement information, and a novel implementation mode is provided for the communication of the high-power charging information.

(2) Only when DP pin and DN pin are high potential, and CC pin's electric potential is higher than the condition of electric potential threshold value, just judge and treat that the battery charging outfit treats the battery charging outfit for the high power, just can start the special communication link on DP and the DN, and when unsatisfying above-mentioned condition, DP, DN pin still define according to general USB Type-C standard to realized under the compatible prerequisite to general USB Type-C standard, the effective communication of demand information charges.

(3) The voltage of the CC pin is determined according to the maximum charging current which can be provided by the charging equipment, so that the equipment to be charged can obtain the information of the maximum charging current of the charging equipment according to the voltage, and more information support is provided for high-power charging between the equipment to be charged and the charging equipment.

(4) The obtained high-power charging information comprises: the Type information of the equipment to be charged, so that the charging equipment can know whether the equipment to be charged is a battery or a motor, and a corresponding charging strategy is formulated, thereby expanding the application range of Type-C charging and being particularly suitable for direct electric equipment or high-power electric equipment.

(5) Through special communication links on the DP pin and the DN pin, the charging requirement information of a plurality of devices to be charged can be exchanged, and multiplex charging support is realized.

(6) A plurality of high-power charged groups are compiled into a group, and VBUS pins connected with the devices to be charged are set to be the same potential, so that the burden of a charging end is saved, the efficiency loss of power conversion can be reduced, the power output efficiency is improved, and the purpose of high-power charging is achieved.

(7) Before charging, the information of the E-marker is detected, and the factors of a charging cable are considered in a charging strategy, so that high-power charging is safer.

(8) The current of VBUS pin, the voltage of CC pin, the temperature of battery in the equipment to be charged and the like are monitored in real time, when abnormal conditions occur, the current is limited and then interrupted, and the VBUS pin is connected to the electric energy storage after the current is limited, so that the large voltage impact brought to the charging equipment by the instant charging interruption can be avoided, and the charging safety is ensured.

Drawings

Fig. 1A is a hardware schematic diagram of charging a Type-C interface corresponding to a charging method according to an embodiment of the invention.

Fig. 1B is a flowchart of a charging method according to an embodiment of the invention.

Fig. 2A is a hardware schematic diagram of charging a Type-C interface corresponding to a second charging method according to an embodiment of the present invention.

Fig. 2B is a flowchart of a charging method according to a second embodiment of the invention.

Fig. 3A is a hardware schematic diagram of charging a Type-C interface corresponding to the charging method in the fourth embodiment of the present invention.

Fig. 3B is a flowchart of a charging method according to a fourth embodiment of the present invention.

Fig. 4 is a flowchart of a sixth charging method according to an embodiment of the present invention.

Detailed Description

The invention redefines the DP pin and the DN pin in the Type-C interface, establishes a special communication circuit connected with the DP pin and the DN pin, realizes the control of high-power charging which is not standardized at present, and leads the charging equipment to be in wired communication with the equipment to be charged and transmits information such as device identity codes, charging voltage threshold values, charging current requirements, charging power requirements, battery temperature, interrupt requests and the like comprising equipment Type information.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.

First, embodiment of charging method at charging device side

In a first exemplary embodiment of the present invention, a charging method based on a Type-C interface is provided. The charging method is performed on the charging device side. Fig. 1A is a hardware schematic diagram of charging a Type-C interface corresponding to a charging method according to an embodiment of the invention. Fig. 1B is a flowchart of a charging method according to an embodiment of the invention. The present embodiment will be described in detail below with reference to fig. 1A and 1B.

Referring to fig. 1, in the embodiment, a charging device and a device to be charged are connected through a Type-C charging cable. Specifically, a VBUS pin of the charging device is connected with a VBUS pin of the device to be charged, a GND pin of the charging device is connected with a GND pin of the device to be charged, and DP and DN pins of the charging device are respectively connected with DP and DN pins of the device to be charged. And the CC pin of the charging equipment is connected with the CC pin of the equipment to be charged. In addition, since the present invention is high power charging, the Type-C charging cable needs to satisfy charging power of 30W or more.

Those skilled in the art will appreciate that the Type-C interface is satisfactory for positive and negative insertion, and there are only 1 CC lines in the charging cable. Therefore, whether the charging equipment or the equipment to be charged is the charging equipment, the positive and negative insertion of the connector can be automatically identified, and adaptive adjustment can be made. The functions performed by pin CC1 and pin CC2 may be interchanged due to the positive and negative insertion of the connector. Therefore, in order to simplify the description under the strict condition without affecting the technology, the CC pin described in the present invention is the CC pin actually connected to the device to be charged according to the general representation manner in the field.

Referring to fig. 1B, the charging method of the present embodiment is executed by a controller of a charging device, and includes:

d, establishing a special communication link with the equipment to be charged through DP and DN pins of the Type-C interface;

the communication circuit is used for signal processing and coding/decoding between the charging device and the charged device.

The charging power supply control circuit is used for executing a control strategy issued by the controller and directly controlling the power output of the VBUS pin.

In this embodiment, the DP pin and the DN pin in the Type-C interface are redefined, and a special communication circuit connected to the DP pin and the DN pin is established, so that the charging device can determine a charging strategy for the device to be charged according to the charging requirement information, and control over high-power charging that is not standardized at present is realized.

Second, second embodiment of charging method for charging device

On the basis of the first embodiment, the invention further provides a charging method. The charging method is executed by a controller on the charging device side. In the charging method of the embodiment, a judgment mode for judging whether the device to be charged is a high-power device to be charged is added, and if the device to be charged is the high-power device to be charged, high-power charging is performed; otherwise, the universal USB charging process is adopted to charge the equipment to be charged.

Fig. 2A is a hardware schematic diagram of charging a Type-C interface corresponding to a second charging method according to an embodiment of the present invention. Referring to fig. 2A, in addition to the USB data signal function defined by the DP and DN pins, the present embodiment specifically sets the DP and DN pins, and after determining the charging identity of the device to be charged, the device to be charged is connected to VDD of the Type-C interface through a pull-up resistor, so as to indicate to the charging device that the device to be charged is a device to be charged that can receive high-power charging.

With continued reference to fig. 2A, the CC lines (CC1 and CC2) are connected to VDD through pull-up variable resistors and to GND through pull-down resistors. Meanwhile, the charging apparatus further includes: the voltage detector is used for detecting the voltage of the CC pin; and the impedance controller is used for controlling the pull-up variable resistor. In addition, three lines are connected to the CC line, wherein the "digital input" and "digital output" are used for communication between the charging device and the device to be charged, and the "analog input" functions to assist the voltage detector in voltage detection. The setting of the voltage of the CC pin can be realized by pulling up the variable resistor, the voltage detector, and the impedance controller, and the following will be described in detail in the fourth embodiment of the charging method in combination with the charging method in the multiplexing scenario.

Before describing the charging method on the charging device side in the present embodiment, it should be noted that:

1. charging device and device to be charged

For the existing electronic devices, most of the existing electronic devices are bidirectional charging receivers, and the bidirectional charging receivers can be used as charging devices (Source) and devices to be charged (Sink). As shown in fig. 1, the charging device and the device to be charged are identical in terms of the relevant structure. For the charging device, it is a charging device in the scenario of the present embodiment, and may also be a device to be charged in other scenarios. Likewise, for the device to be charged, it is the device to be charged in the present scenario, but may be the charging device in other scenarios.

After the two devices are connected through the Type-C charging cable, the charging device and the device to be charged can be determined through the related protocol. The details of the protocol are not relevant to the present invention, and are not described herein.

2. Data signal function of DP pin and DN pin

In the existing Type-C interface protocol, there is a related definition for the DP pin and the DN pin, which are used for the USB data signal function. On the premise of being compatible with the pin definition, the embodiment gives the high-power charging information interaction function when the high-power charging scene and related conditions are met. Of course, if compatibility is not considered, the DP pin and DN pin of the device to be charged may be directly set.

3. Setting of a device to be charged

Before the charging method of the charging device of this embodiment, the device to be charged needs to make corresponding settings, that is, after determining its own charged identity, the DP pin and the DN pin are connected to VDD through a pull-up resistor.

Fig. 2B is a flowchart of a charging method according to a second embodiment of the invention. Referring to fig. 2B, the charging method of the charging device of the present embodiment includes:

in this embodiment, the CC pin of the charging device serves as a role of indicating the maximum charging power of the charging device to be charged, and specifically, the following settings are made:

when the maximum charging power of the charging equipment is less than 100W, the standard potential of the CC pin takes a value from 1.6V to 1.8V;

when the maximum charging power of the charging equipment is more than or equal to 100W and less than 300W, the standard potential of the CC pin takes a value from 1.8V to 2.0V;

and thirdly, when the maximum charging power of the charging equipment is larger than 300W, the standard potential of the CC pin takes a value above 2.0V.

The charging capability of the charging equipment can be known by the potential of the equipment to be charged obtained through the CC pin, so that the equipment to be charged can obtain the information of the maximum charging current of the charging equipment according to the voltage, and more information support is provided for high-power charging between the equipment to be charged and the charging equipment.

B, detecting the potential of a DP pin and a DN pin of the Type-C interface;

as described above, on the high-power device-to-be-charged side, after determining its own charged identity, the DP pin and the DN pin are connected to VDD through pull-up resistors. Therefore, if the charging device detects that the DP pin and the DN pin are high, it can be determined that the other end connected through the Type-C cable is a high-power device to be charged.

Step C, judging whether the following conditions are met, if so, judging that the equipment to be charged is high-power equipment to be charged, executing steps D-G, otherwise, judging that the equipment to be charged is not high-power equipment to be charged, and executing step Y1: the potentials of the DP pin and the DN pin are both high potentials.

It should be noted that the "high voltage" mentioned above is a general expression of those skilled in the art, and actually indicates the high voltage determined by the logic in the Type-C interface.

The steps D to G can refer to the relevant description in the first embodiment;

it should be particularly noted that the charging method of the present embodiment may adjust the charging strategy according to the information of the E-marker.

Specifically, the method further comprises the following steps before the step F: acquiring information of an E-marker in a charging cable through a CC pin connected with the E-marker in a Type-C interface; step F also includes: if the charging cable is not provided with an E-marker, adjusting corresponding parameters in a charging strategy to enable the charging power to be less than 30W; or if the charging cable is provided with the E-marker, and the charging parameter of the E-marker is smaller than the corresponding parameter in the charging parameters, adjusting the corresponding parameter in the charging strategy to enable the charging parameter to meet the charging parameter of the E-marker.

Step H, judging whether charging is finished or not at preset time intervals, and if charging is finished, stopping charging in step Z; if the charging is not complete, step E is performed to obtain updated charging requirement information of the device to be charged via the ad hoc communication link, for example: and current electric quantity information, and a charging strategy is re-formulated according to the current electric quantity information.

Step Y1, judging whether the E-marker exists in the Type-C charging cable and the charging parameter thereof, and executing a step YA1 if the E-marker does not exist or the charging power is less than 30W; if the E-marker exists and the charging power is more than or equal to 30W, executing YB 1;

step YA1, charging the device to be charged according to the USB general power mode;

step YA2, judging whether charging is completed or not at preset time intervals, and if charging is completed, executing step Z to stop charging; otherwise, step YA1 is executed;

step YB1, charging the device to be charged according to the USB high-power mode;

step YB2, judging whether charging is finished or not at preset time intervals, if charging is finished, executing step Z to stop charging; otherwise, go to step YB 1;

and step Z, stopping charging.

Regarding the step H, the step YA1, the preset time interval in the step YB1, which is typically set to 100 ms. Through the arrangement, the charging requirement of the equipment to be charged which changes constantly can be better met,

in this embodiment, the compatibility of the original definitions of the DP pin and the DN pin is realized, and the compatibility of the general USB charging process is also realized. Meanwhile, the standard potential of the CC pin is set, so that the equipment to be charged can know the charging capacity of the charging equipment, and more information support can be provided for high-power charging between the equipment to be charged and the charging equipment.

Third, third embodiment of charging method on charging device side

On the basis of the first embodiment, the invention further provides a charging method. The charging method is performed by a controller of a charging device. In the charging method of the present embodiment, the charging requirement information and the charging policy will be described in detail with reference to a specific charging scenario.

With the improvement of the charging power of the Type-C interface, the direct power utilization equipment such as an electric lamp, an electric hair drier, an electric rice cooker, an electric drill and a motor can be supplied with power by utilizing the charging power. However, this presents a new problem for Type-C interface charging: how to identify the type of equipment to be charged; secondly, how to provide quick charging service for the equipment to be charged in the battery type under the premise of ensuring safety and not damaging the service life of the battery. And the present embodiment will solve both problems.

Referring to fig. 1B, in the present embodiment, in step E, the charging requirement information includes: device type information, current electric quantity information and charging voltage threshold value information. Wherein:

1. device type information

In a broad aspect, the device types include: battery type and non-battery type. The non-battery type is a type of direct-use device, that is, the charging device directly supplies power to the device itself, and the device is, for example: electric lamps, hair dryers, electric cookers, electric drills, engines, and the like. The battery type is an indirect electric device type which comprises a battery, namely, a charging device firstly charges the battery, and the battery supplies power to the device. Wherein, the battery can be further divided into: lead-acid batteries, lithium ion batteries, high current automotive batteries, and the like. Such devices are for example: mobile terminal, panel computer, notebook computer, electric bicycle, electric automobile.

After the charging device obtains the device type of the device to be charged through the special communication link, it may formulate a corresponding charging policy for different device types, for example: the power output mode, the output current, the voltage, the conversion time control and the like are adjusted, so that the quick charging service can be provided on the premise of ensuring the safety and not damaging the service life of the battery.

2. Current power information

For a battery type device to be charged, the optimal charging strategy is different for different amounts of power. For example, in the case of a lithium battery, when the current charge amount is less than 5%, the battery life may be seriously affected by the adoption of the highest voltage charging, and therefore, it is very effective for the device to be charged to make an appropriate charging strategy according to the type of the device and the current charge amount.

3. Charging voltage threshold information

For high power charging, the higher the charging voltage, the faster the charging. However, each type of device to be charged has a tolerance threshold, and if the tolerance threshold is exceeded, the device to be charged may be damaged, and even more, a safety hazard may exist. The charging device, after obtaining the device type and charging voltage threshold information for the device to be charged via the ad-hoc communication link, can formulate an optimal and safest charging strategy.

(ii) non-battery type

When the charging equipment judges that the equipment to be charged is direct electric equipment (direct high-power driving product) according to the charging requirement information, the charging equipment is directly supplied with power according to the charging strategy in the constant voltage mode. When the highest output voltage which can be provided by the charging equipment is higher than the charging voltage threshold of the equipment to be charged, the equipment to be charged is charged in a constant voltage mode which is equal to the charging voltage threshold of the equipment to be charged. And when the highest output voltage which can be provided by the charging equipment is lower than the charging voltage threshold of the equipment to be charged, charging the equipment to be charged by adopting a constant voltage mode which is equal to the highest output voltage of the charging equipment.

(II) Battery type

When the charging equipment judges that the equipment to be charged is of a battery type according to the charging requirement information, further judging which charging strategy should be adopted according to the current electric quantity information of the equipment to be charged:

charging the equipment to be charged in a low-current awakening mode when the current electric quantity of the equipment to be charged is smaller than a first electric quantity threshold value;

charging the equipment to be charged in a constant current mode when the current electric quantity of the equipment to be charged is greater than or equal to the first electric quantity threshold and is smaller than the second electric quantity threshold;

and thirdly, when the current electric quantity of the equipment to be charged is more than or equal to a second electric quantity threshold value, charging the equipment to be charged by adopting a constant voltage mode.

Taking the type of the device to be charged as a lithium ion battery as an example, the first electric quantity threshold is set to a value within the following range: 5% -15%; the second charge threshold is set to a value in the following range: 50 to 80 percent. Meanwhile, for charging the device to be charged in the low-current wake-up mode, there are related definitions in the art, and details are not described herein. For constant current charging, the charging current is set to satisfy the maximum current that the charging device can provide without exceeding the charging voltage threshold of the device to be charged.

In the embodiment, the device type, the current electric quantity and the charging voltage threshold of the device to be charged are obtained through the special communication link, and the charging strategy for the specific device to be charged is formulated by using the device type, the current electric quantity and the charging voltage threshold, so that the safety can be fully met and the service life of the device to be charged can be ensured during high-power quick charging. Meanwhile, for direct power utilization products, high-power output can be directly provided according to the device types of the direct power utilization products, and the application field of Type-C charging is expanded.

Fourth, charging device side charging method embodiment

On the basis of the first embodiment, the invention further provides a charging method. The charging method is suitable for the scene of simultaneously charging a plurality of devices to be charged.

Fig. 3A is a hardware schematic diagram of charging a Type-C interface corresponding to the charging method in the fourth embodiment of the present invention. As shown in fig. 3A, 4 devices to be charged are connected to the charging device through corresponding Type-C charging cables. The DP pins and the DN pins of the 4 pieces of equipment to be charged are connected to the DP pins and the DN pins of the charging equipment, the CC lines of the 4 pieces of equipment to be charged are respectively connected to the CC pins of the charging equipment, and the VBUS lines of the 4 pieces of equipment to be charged are respectively connected to the VBUS pin of one of the charging equipment.

In this embodiment, the charging device establishes a special communication link with the N devices to be charged respectively through the DP pin and the DN pin of the Type-C interface, so that for the 4 devices to be charged, after receiving the charging requirement information request of the charging device, the charging device sends its own charging requirement information to the charging device respectively. Therefore, the charging equipment can know the charging demand information of the 4 pieces of equipment to be charged.

As described in the second embodiment, in step a, the standard potential of the CC pin is set according to the maximum charging power that can be provided by the charging device. However, when the CC pins of the multiple devices to be charged are connected to the CC pins of the charging device, the voltage of the CC pins of the Type-C interface of the charging device is inevitably pulled down, so that the devices to be charged cannot know the maximum charging power that the charging device can provide.

In this embodiment, referring to fig. 2A, the charging device includes: the voltage detector is used for detecting the voltage of the CC pin; the pull-up variable resistor is connected between the CC pin and the VDD of the Type-C interface; and the impedance controller is used for controlling the pull-up variable resistor. In addition, three lines are connected to the CC line, wherein the "digital input" and "digital output" are used for communication between the charging device and the device to be charged, and the "analog input" functions to assist the voltage detector in voltage detection. Such hardware setting, the relevant flow of combining the controller can guarantee that the CC pin of the Type-C interface of battery charging outfit remains at standard potential throughout, the maximum charging power that the sign battery charging outfit that can be correct can provide.

Specifically, in this embodiment, the charging device is allowed to simultaneously supply a plurality of sets of devices to be charged, a voltage detector is built in the charging device to detect the voltage change of the pin connected to the CC, the impedance of the receiver on the CC1/CC2 is 5.1K Ω to Ground (GND) in the USB PD, if two devices to be charged are simultaneously connected to the charging device, the equivalent resistance detected on the charging device is changed to have two 5.1K Ω to ground connected in parallel, that is, the equivalent resistance is changed to 2.55K Ω, and the voltage of the pin CC1/CC2 is lower than the standard voltage. At this time, the charging device changes the pull-up variable resistor through the impedance controller, so that the pin CC1/CC2 maintains the voltage representing the maximum charging power that can be supplied, for example, at 1.68V, and the device to be charged knows that the charging device can supply no more than 100W of charging power.

Further, it will be understood by those skilled in the art that the pull-up variable resistor and impedance controller may be replaced with a digital voltage follower. At this time, the charging apparatus includes: the voltage detector is used for detecting the voltage of the CC pin; and the digital voltage follower is connected to the CC pin. The charging method further includes: when the voltage detector detects that the potential of the CC pin is lower than or higher than the standard potential, the potential of the CC pin is adjusted to be kept at the standard potential through the digital voltage follower.

In an implementation manner of the present invention, the charging device may control the voltage of each VBUS interface through the charging power control circuit, so as to adapt to the charging requirement of the device to be charged connected thereto, and charge the device to be charged.

In the present embodiment, another implementation manner is adopted. Fig. 3B is a flowchart of a charging method according to a fourth embodiment of the present invention. As shown in fig. 3B, the present embodiment includes:

step A, setting a standard potential of a CC pin according to the maximum charging power which can be provided by charging equipment;

for this step a, reference may be made to the description of example two.

It should be noted that, after the step a, the method further includes: and step A', when the voltage detector detects that the potential of the CC pin is lower than or higher than the standard potential, the resistance value of the pull-up variable resistor is adjusted through the impedance controller, so that the potential of the CC pin is kept at the standard potential.

The steps B to C can refer to the relevant description of the second embodiment;

d, establishing a special communication link with 4 devices to be charged through DP and DN pins of the Type-C interface;

when the special communication link is not established, the charging device performs a link establishment request to 4 devices to be charged in a mass-sending manner, the devices to be charged send link establishment responses when receiving the link establishment request, and the charging device handshakes with one of the devices to be charged to establish the special communication link. Therefore, the charging equipment establishes special communication links with the 4 pieces of equipment to be charged through the DP and DN pins respectively, and then single information interaction can be carried out on one of the equipment to be charged through the corresponding special communication link.

Step E', receiving the charging requirement information of 4 devices to be charged through a special communication link;

the step E' further comprises: substep E1, sending a request for charging requirement information for 4 devices to be charged; substep E2, receiving charging requirement information of 4 devices to be charged one by one, where the charging requirement information includes: and the device identification code of the equipment to be charged.

The charging requirement information comprises identity information of the corresponding equipment to be charged, so that the charging equipment can acquire information such as equipment type, current electric quantity, charging voltage threshold value and the like of the corresponding equipment to be charged according to the identity information.

In this embodiment, the devices to be charged 1, 2, and 3 are all battery type devices to be charged, but the charging voltage thresholds of the three devices are different. The device to be charged 4 is a hair drier, and belongs to direct high-power driving products and direct electric equipment.

Step F', 4 devices to be charged are grouped according to the charging demand information, wherein 3 devices to be charged of battery types, namely the devices 1, 2 and 3 to be charged, are divided into a first group, 1 device to be charged of non-battery type, namely an electric hair drier, is divided into a second group, and charging strategies are respectively formulated aiming at the first group and the second group;

in this embodiment, the devices to be charged are divided into two groups according to the device types. In other embodiments of the present invention, if the devices to be charged are all of the battery type, a plurality of devices to be charged may also be classified according to the charging voltage threshold, and the devices to be charged with the same charging voltage threshold are taken as a group.

The devices to be charged of the corresponding group can then be charged according to different charging strategies.

1. For the second group, the charging method of the embodiment further includes:

step G2A, charging the equipment 4 to be charged through a VBUS4 pin according to a corresponding charging strategy aiming at the second group;

in the charging strategy for the second group, since the device to be charged 4 is a direct-use device, the device to be charged 4 can be directly supplied with power in a constant-voltage manner, and the supply voltage of VBUS is set to 12V.

Step H2, judging whether the charging is finished, if so, executing step Z, and if not, executing step G2B;

step G2B, receiving the charging requirement information of the device to be charged 4 through the special communication link, adjusting the charging policy for the second group in real time, and executing step G2A.

2. For the first group, the charging method of the present embodiment further includes:

G1A, connecting pins VBUS 1-VBUS 3 aiming at the first group;

step G1B, charging 3 devices to be charged according to a corresponding charging strategy for the first group;

in the charging strategy for the first group, the charging voltage thresholds of the devices to be charged 1, 2, 3 are compared, and the lowest charging voltage threshold-9.7V is selected as the charging voltage threshold. Since the current electric quantity of the 3 to-be-charged devices is greater than 80%, the 3 to-be-charged devices in the second group are directly charged in a constant voltage manner, and the supply voltage of VBUS 1-VBUS 3 is set to 9.7V.

Step H1, judging whether the charging is finished, if so, executing step Z, and if not, executing step G2C;

and finally, step Z, after the charging is finished, disconnecting the voltage of the corresponding VBUS pin and stopping the charging.

In this embodiment, treat that charging equipment is connected to 4 and treats charging equipment through 4 Type-C charging cable. However, with the method of the present embodiment, as shown by the dotted line in fig. 3A, the Type-C charging cables 1 to 3 can be combined into one signal line, i.e., the devices to be charged 1 to 3 share the same function. In other words, the equipment to be charged 1 to 3 share the VBUS, GND, DP, DN and CC leads in the 1 one-to-many Type-C charging cable.

With continued reference to fig. 3A, in another embodiment of the present invention, the devices to be charged 1, 2, 3, and 4 are all battery-type devices to be charged. The charging voltage threshold of the devices to be charged 1, 2 and 3 is 24V, and the charging voltage threshold of the device to be charged 4 is 9.7V. In this case, the devices to be charged 1, 2, and 3 can be charged using a pair of three Type-C charging cables, and the Type-C charging cables only need to be connected to one VBUS pin whose voltage is set to 24V. Another Type-C charging cable is used to charge the device to be charged 4, and the voltage corresponding to the VBUS pin is set to 9.7V.

The above examples of grouping by device type and grouping by charging voltage threshold are given, since the charging voltage is also related to the current electric quantity of the device to be charged of battery type, the device to be charged can also be grouped according to the current electric quantity. Further, the following three factors can be grouped in a nested manner: the device type, the charging voltage threshold value and the current electric quantity are firstly utilized to classify the device into groups, then the charging voltage threshold value is utilized to classify the device into groups, and finally the current electric quantity is utilized to classify the device into groups, so that the flexibility of high-power charging is greatly improved.

In addition, although the embodiment is described by taking 4 devices to be charged as an example, the present invention can be applied to any N devices to be charged, that is, N1 devices to be charged are classified into a group, and a charging policy for the group is specifically formulated, where N1 < N.

In summary, in the present embodiment, a charging device charges multiple devices to be charged, and meanwhile, by grouping multiple high-power devices, the burden of the charging terminal is saved, the efficiency loss of power conversion is reduced, and the high-power charging efficiency is improved. Meanwhile, by the method of organizing the groups, the signal wires with the same function can be shared, and the burden of multiple cables is reduced.

Fifth, charging device side charging method embodiment

On the basis of the second embodiment, the invention further provides a charging method. The charging method can provide safer high-power charging. Referring to fig. 2A, the charging apparatus further includes: an electrical energy store. The charging demand information includes: battery temperature information of the device to be charged.

Also included after step G shown in fig. 2B is:

step L, monitoring the current of the VBUS pin in real time, when the current is abnormal, conducting current limiting and then interruption operation on the current of the VBUS pin, and introducing the current of the VBUS into the electric energy storage before interruption;

specifically, the step L further includes: l1, monitoring the current of the VBUS pin in real time; step L2, when the current fluctuation of a single VBUS pin exceeds a first preset current fluctuation threshold, limiting the current of the single VBUS pin, introducing the current of the single VBUS pin into the electric energy storage, and then interrupting the current of the single VBUS pin; and step L3, when the current fluctuation of the VBUS pins exceeds a second preset current fluctuation threshold value, limiting the current of the VBUS pins, introducing the current of the VBUS pins into the electric energy storage, and then interrupting the current of the VBUS pins.

Step M, monitoring the voltage of pins CC1 and CC2 in real time, when the voltage is abnormal, carrying out current limiting and then interrupting operation on the current of a VBUS pin, and introducing the current of the VBUS into the electric energy storage before interruption;

specifically, the step M further includes: step M1, monitoring the voltage of the pins CC1 and CC2 in real time; step M2, when monitoring one of the following situations, limiting the current of the VBUS pin, introducing the current of the VBUS pin into the electric energy storage, then interrupting the current of the VBUS pin, and re-executing step D: pin CC1 and/or pin CC2 are short-circuited to ground; instantaneous high jump of the potential of the pin CC1 and/or the pin CC 2; and the change of the charging instantaneous power exceeds a preset power threshold value.

And step N, monitoring the battery temperature of the equipment to be charged in real time through the special communication link, when the battery temperature is abnormal, carrying out current limiting and then interruption operation on the current of the VBUS pin, and introducing the current of the VBUS into the electric energy storage before interruption.

Specifically, the step N further includes: a step N1 of receiving battery temperature information of the device to be charged via said ad hoc communication link; and step N2, when the battery temperature is monitored to exceed the preset temperature threshold, limiting the current of the corresponding VBUS pin, introducing the current of the VBUS pin into the electric energy storage, and then interrupting the current of the corresponding VBUS pin.

Generally speaking, in this embodiment, if the device to be charged needs to be charged promptly, a signal line defined as CC1 or CC2 in the charging cable may be forcibly shorted to the ground, or another signal of the charging cable is caused to be in a non-default state, such as disconnected, etc., or the charging status exceeds a set variation ratio, for example, the charging mode sets the maximum value of the charging instantaneous power variation of the charging device to be 3%, when the variation exceeds 3%, the charging device stops charging, communicates with the device to be charged again, and enters a new charging process; when charging is suddenly stopped, the charging equipment is damaged frequently due to the change of the instantaneous charging condition, the charging equipment closes an external charging power supply, and the power supply path is led into an electric energy storage device in the charging equipment in time, so that power supply surge generated by the sudden change of the charging condition is eliminated, the charging equipment is prevented from being damaged by the power supply surge, the surge electric energy can be recycled, and the power supply waste is avoided.

Sixth, the embodiment of the side charging method of the device to be charged

Corresponding to the first to the fifth charging method embodiments, the invention further provides a charging method executed on the side of the device to be charged. Fig. 4 is a flowchart of a sixth charging method according to an embodiment of the present invention. As shown in fig. 4, the charging method of the present embodiment includes:

step S402, connecting the DP pin and the DN pin of the Type-C interface to a high potential through a pull-up resistor;

step S404, detecting the potential of a CC pin in the Type-C interface, and obtaining the maximum charging power of the charging equipment according to the potential of the CC pin;

step S406, establishing a special communication link with the charging equipment through a DP pin and a DN pin of the Type-C interface;

step S408, sending self charging demand information to the charging equipment through a special communication link;

step S410, receiving charging of charging equipment through a VBUS pin in a Type-C interface;

step S412, during the charging process, the real-time status information is sent to the charging device through the special communication link.

Wherein the real-time status information comprises: battery temperature, interrupt request, current power level, etc. of the device to be charged.

The present embodiment has the beneficial effects corresponding to the first to sixth embodiments, which are not repeated herein.

Seventh, charging device embodiment

The invention also provides a charging device. Referring to fig. 1A, the charging apparatus of the present embodiment includes: a memory having instructions stored therein; and a controller, electrically coupled to the memory, configured to execute the charging method of embodiments one to five of the charging device-side charging method based on instructions stored in the memory.

In this embodiment, the charging device is a power adapter. In other embodiments of the present invention, the charging device may further include: fill electric pile, screen equipment that can output power, electronic equipment that can output power, power output equipment etc. Among them, the power output device is, for example: solar panels, wind power installations, generators, etc.

Eighth, apparatus to be charged embodiment

The invention also provides equipment to be charged.

Referring to fig. 1, the apparatus to be charged in this embodiment includes: a memory having instructions stored therein; and a controller, electrically coupled to the memory, configured to execute the charging method according to embodiment six based on instructions stored in the memory.

In this embodiment, the equipment to be charged is the hairdryer of 3 mobile terminal and 1 Type-C interface power supplies. The mobile terminal belongs to a battery type, namely indirect electric equipment; the electric hair drier belongs to a non-battery type, namely, a direct electric device. Here, an indirect consumer is a device to be charged comprising a battery, i.e. the charging device first charges the battery, which in turn powers the device itself. Direct power consumption equipment, i.e. charging equipment, directly supplies power to the equipment itself, and such equipment is for example: electric lamps, hair dryers, electric cookers, electric drills, engines, and the like.

So far, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. The present invention should be clearly recognized by those skilled in the art from the above description.

In summary, the invention designs the high-power charging method, the charging device and the device to be charged under the standard USB Type-C interface, which is compatible with the current Type-C charging standard, not only can charge general electronic products, but also can charge electronic products with high power, completely meets the environmental protection requirement of green energy, and has better popularization and application prospect.

It is noted that for some implementations, if not essential to the invention and well known to those of ordinary skill in the art, they are not illustrated in detail in the drawings or in the text of the description, as they may be understood with reference to the relevant prior art.

Further, the foregoing examples are provided merely to enable the invention to meet the requirements of law, and the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Further, the above definitions of the various elements and methods are not limited to the various specific structures, shapes or arrangements of parts mentioned in the examples, which may be easily modified or substituted by those of ordinary skill in the art.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as meaning directly connected to each other, indirectly connected through an intermediate medium, or communicated between two elements. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.

Unless expressly indicated to the contrary, the numerical parameters set forth in the specification and claims of this invention may be approximations that may vary depending upon the teachings of the invention. In particular, all numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about," which is intended to be interpreted to mean including within the meaning of a specified amount, in some embodiments, a variation of ± 10%, in some embodiments, a variation of ± 5%, in some embodiments, a variation of ± 1%, and in some embodiments, a variation of ± 0.5%.

Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

Further, unless steps are specifically described or must occur in sequence, the order of the steps is not limited to that listed above and may be changed or rearranged as desired by the desired design. The embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e., technical features in different embodiments may be freely combined to form further embodiments.

The algorithms and displays presented herein are not related to any particular computer, virtual system, or other native device. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention, and the foregoing descriptions of specific languages are provided for purposes of disclosure as best modes of practicing the invention.

The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components in the associated apparatus according to embodiments of the invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.

All modules of embodiments of the present invention may be hardware structures, physical implementations of which include, but are not limited to, physical devices including, but not limited to, transistors, memristors, DNA computers.

Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features of the invention in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so invented, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature of the invention in this specification, including the accompanying claims, abstract, and drawings, may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Also in the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the method of the invention should not be construed to reflect the intent: the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A charging method based on a Type-C interface is characterized by being executed on a charging device side and comprising the following steps:

step E, receiving the charging requirement information of the equipment to be charged through the special communication link;

2. The charging method according to claim 1, wherein the step D is preceded by:

b, detecting the potential of a DP pin and a DN pin of the Type-C interface;

3. The charging method according to claim 2, characterized in that:

in the step C, the high potential is: the high potential logically judged in the Type-C interface; and/or

The high-power equipment to be charged is equipment to be charged, which can accept charging power of more than 30W; and/or

The step A comprises the following steps: when the maximum charging power of the charging equipment is less than 100W, the standard potential of the CC pin takes a value from 1.6V to 1.8V; when the maximum charging power of the charging equipment is more than or equal to 100W and less than 300W, the standard potential of the CC pin takes a value from 1.8V to 2.0V; and when the maximum charging power of the charging equipment is more than 300W, the standard potential of the CC pin is above 2.0V.

4. The charging method according to claim 1, wherein the charging demand information includes: equipment type information, current electric quantity information and charging voltage threshold value information;

the step F comprises the following steps: when the device to be charged is judged to be of the battery type according to the device type information, the charging strategy comprises the following steps: when the current electric quantity of the equipment to be charged is smaller than a first electric quantity threshold value, charging the equipment to be charged in a low-current awakening mode; when the current electric quantity of the equipment to be charged is greater than or equal to the first electric quantity threshold value and is smaller than the second electric quantity threshold value, charging the equipment to be charged in a constant current mode; when the current electric quantity of the equipment to be charged is greater than or equal to the second electric quantity threshold value, charging the equipment to be charged by adopting a constant voltage mode; and/or

The step F comprises the following steps: when the device to be charged is judged to be of a non-battery type according to the device type information, the charging strategy comprises the following steps: and charging the equipment to be charged by adopting a constant voltage mode.

5. The charging method according to claim 4, wherein when it is determined from the device type information that the device to be charged is a lithium battery:

the first charge amount threshold is set to a value within the following range: 5% -15%; the second charge threshold is set to a value in the following range: 50% -80%; and/or

In the constant current mode, the charging current is set to meet the maximum current which can be provided by the charging equipment under the condition that the charging current does not exceed the charging voltage threshold of the equipment to be charged; and/or

In the constant voltage mode, the charging voltage is less than or equal to the charging voltage threshold of the equipment to be charged.

6. The charging method according to claim 1, wherein the number of the devices to be charged is N, wherein N is greater than or equal to 2;

the step D comprises the following steps: establishing special communication links with N devices to be charged respectively through a DP pin and a DN pin of a Type-C interface;

the step E comprises the following steps: a substep E1 of sending a charging demand information request to the N devices to be charged; substep E2, receiving charging requirement information of the N devices to be charged one by one, where the charging requirement information includes: and the device identification code of the equipment to be charged.

7. The charging method according to claim 6, characterized in that:

the step F comprises the following steps: grouping N1 to-be-charged equipment into a group, and determining a charging strategy for the group according to the charging demand information of N1 to-be-charged equipment, wherein N1 is less than N; wherein the grouping is based on one or more of the following information of the device to be charged: device type information, charging voltage threshold information and current electric quantity information;

in the group, when the charging voltage threshold values of N1 devices to be charged are the same, the charging voltage in the charging strategy is set as the charging voltage threshold value; or when the charging voltage thresholds of the N1 devices to be charged are not the same, the charging voltage in the charging strategy is set to the lowest value of the charging voltage thresholds of the N1 devices to be charged;

the step G comprises the following steps: connecting VBUS pins of Type-C interfaces of charging equipment corresponding to N1 pieces of equipment to be charged in the group together, and charging N1 pieces of equipment to be charged in the group according to a charging strategy aiming at the group.

8. The charging method according to claim 6, characterized in that:

the charging apparatus includes: the voltage detector is used for detecting the voltage of the CC pin in real time; the standard voltage regulating circuit is used for regulating the voltage of the CC pin;

the step D is also preceded by: step A, setting a standard potential of a CC pin of a Type-C interface according to the maximum charging power of charging equipment; and step A', when the voltage detector detects that the potential of the CC pin is lower than or higher than the standard potential, the potential of the CC pin is kept at the standard potential through the standard voltage regulating circuit.

9. The charging method according to claim 8,

the standard voltage regulating circuit includes: the digital voltage follower is connected to the CC pin; the step of keeping the potential of the CC pin at the standard potential through the standard voltage regulating circuit comprises the following steps: the potential of a CC pin is kept at a standard potential through the digital voltage follower; or

The standard voltage regulating circuit includes: the pull-up variable resistor is connected between the CC pin and the VDD of the Type-C interface; an impedance controller for controlling the pull-up variable resistor; the step of keeping the potential of the CC pin at the standard potential through the standard voltage regulating circuit comprises the following steps: and controlling the pull-up variable resistor through the impedance controller to keep the potential of the CC pin at a standard potential.

10. The charging method according to claim 1, wherein the charging device comprises: an electrical energy store; the step G is followed by:

step L, monitoring the current of the VBUS pin in real time, when the current is abnormal, carrying out current limiting and then interrupting operation on the current of the VBUS pin, and introducing the current of the VBUS into the electric energy storage before interruption; and/or

Step N, monitoring the voltage of pins CC1 and CC2 in real time, when the voltage is abnormal, carrying out current limiting and then interrupting operation on the current of a VBUS pin, and introducing the current of the VBUS into the electric energy storage before interruption; and/or

The charging demand information includes: battery temperature information; and M, monitoring the battery temperature of the equipment to be charged in real time through the special communication link, when the battery temperature is abnormal, carrying out current limiting and then interrupting operation on the current of the VBUS pin, and introducing the current of the VBUS into the electric energy storage before interruption.

11. The charging method according to claim 1, characterized in that:

the step F also comprises the following steps: acquiring information of an E-marker in a charging cable through a CC pin connected with the E-marker in a Type-C interface;

the step F further comprises the following steps: if the charging cable is not provided with an E-marker, adjusting corresponding parameters in a charging strategy to enable the charging power to be less than 30W; or if the charging cable is provided with the E-marker, and the charging parameter of the E-marker is smaller than the corresponding parameter in the charging parameters, adjusting the corresponding parameter in the charging strategy to enable the charging parameter to meet the charging parameter of the E-marker.

12. The utility model provides a battery charging outfit based on Type-C interface which characterized in that includes:

a memory having instructions stored therein; and

a controller, electrically coupled to the memory, configured to perform the charging method of any of claims 1-11 based on instructions stored in the memory.

13. The charging apparatus according to claim 12, characterized in that:

the charging device is one of the following group: the system comprises a power adapter, a charging pile, a screen device capable of outputting power, an electronic device capable of outputting power and an electric power output device; and/or

The equipment to be charged is: an indirect power utilization device or a direct power utilization device; the indirect power consumer is one of the following group: the mobile terminal comprises a mobile terminal, a tablet computer, a notebook computer, an electric bicycle and an electric automobile; the direct consumer is one of the following group: electric lamps, electric hair dryers, electric rice cookers, electric drills, electric tools.

14. A charging method based on a Type-C interface is characterized by being executed on a device to be charged and comprising the following steps:

step S408, sending self charging demand information to the charging equipment through the special communication link;

and step S410, receiving the charging of the charging equipment through a VBUS pin in the Type-C interface.

15. The charging method according to claim 14, characterized in that:

the step S210 further includes: step S402, connecting the DP pin and the DN pin of the Type-C interface to a high potential through a pull-up resistor; step S404, detecting the potential of a CC pin in a Type-C interface, and obtaining the maximum charging power of the charging equipment according to the potential of the CC pin; and/or

The step S410 further includes: step S412, during the charging process, sending real-time status information of the charging device to the charging device through the special communication link, where the real-time status information includes one of the following information: battery temperature information, interrupt request, current power information.

16. The utility model provides a treat battery charging outfit based on Type-C interface which characterized in that includes:

a memory having instructions stored therein; and

a controller, electrically coupled to the memory, configured to perform the charging method of claim 14 or 15 based on instructions stored in the memory.