CN111884281B - Quick charging system and method - Google Patents

Quick charging system and method Download PDF

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Publication number
CN111884281B
CN111884281B CN202010661301.4A CN202010661301A CN111884281B CN 111884281 B CN111884281 B CN 111884281B CN 202010661301 A CN202010661301 A CN 202010661301A CN 111884281 B CN111884281 B CN 111884281B
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China
Prior art keywords
charging
module
charging module
rechargeable battery
signal
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CN202010661301.4A
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Chinese (zh)
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CN111884281A (en
Inventor
王阳
肖国文
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Guangdong Genius Technology Co Ltd
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Guangdong Genius Technology Co Ltd
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Priority to CN202010661301.4A priority Critical patent/CN111884281B/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00309—Overheat or overtemperature protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The embodiment of the invention discloses a quick charging system and a quick charging method. The system comprises: a charging line and an electronic device; the charging line is electrically connected between the direct current power supply and the electronic equipment and used for charging the electronic equipment; the charging wire includes: the charging line comprises a charging line body, a first charging module and a charging line controller, wherein the first charging module and the charging line controller are installed in the charging line body; the electronic device includes: the charging device comprises a rechargeable battery, a second charging module and an electronic device controller; the first charging module and the second charging module are electrically connected between the direct current power supply and the rechargeable battery; the charging wire controller is electrically connected with the first charging module; the electronic device controller is electrically connected with the charging line controller and the second charging module and is used for controlling the second charging module to charge the rechargeable battery and/or controlling the first charging module to charge the rechargeable battery through the charging line controller. The invention avoids the problem of serious internal heating of the electronic equipment during quick charging, thereby avoiding potential charging safety risk and improving the user experience of the electronic equipment.

Description

Quick charging system and method
Technical Field
The invention relates to the technical field of charging, in particular to a quick charging system and a quick charging method.
Background
Wearable equipment is developed day by day, and the function is more and more large. With the increasing abundance of functions, the power consumption is rapidly increased. At present, no good solution is available for reducing power consumption, and only the endurance of wearable equipment can be prolonged by increasing the battery capacity. The increase in battery capacity inevitably leads to a longer charging time, and thus the demand for rapid charging is also more urgent. At present, the rapid charging means that the charging power is increased, large current is needed for charging, the inside of the wearable device generates heat seriously, potential charging safety risks exist, and the user experience of the wearable device is influenced.
Disclosure of Invention
Therefore, in order to solve the above problems, a quick charging system and a quick charging method are provided to solve the technical problems in the prior art that the internal heating of the device is serious due to quick charging and a potential charging safety risk exists.
In a first aspect, the present invention provides a fast charging system, the system comprising: a charging line and an electronic device;
the charging line is electrically connected between a direct current power supply and the electronic equipment and is used for charging the electronic equipment;
the charging wire includes: the charging line comprises a charging line body, a first charging module and a charging line controller, wherein the first charging module and the charging line controller are installed in the charging line body;
the electronic device includes: the charging device comprises a rechargeable battery, a second charging module and an electronic device controller;
the first charging module and the second charging module are electrically connected between the direct current power supply and the rechargeable battery;
the charging wire controller is electrically connected with the first charging module;
the electronic device controller is electrically connected with the charging wire controller and the second charging module and is used for controlling the second charging module to charge the rechargeable battery, and/or controlling the first charging module to charge the rechargeable battery through the charging wire controller.
In one embodiment, the electronic device further comprises a connector;
the charging wire further comprises: the charging wire body is connected with the direct-current power supply through the USB interface;
a first pin of the connector is electrically connected with a power supply end of the USB interface and the second charging module;
the second pin of the connector is electrically connected with the electronic equipment controller, the rechargeable battery, the charging wire controller and the first charging module;
the third pin of the connector is electrically connected with the electronic equipment controller and the charging line controller;
a fourth pin of the connector is electrically connected with a grounding end of the USB interface;
the second pin is further electrically connected with a D + end of the USB interface, the third pin is further electrically connected with a D-end of the USB interface, or the second pin is further electrically connected with the D-end of the USB interface, and the third pin is further electrically connected with the D + end of the USB interface.
In one embodiment, the connector is a POGOPIN connector;
the VBUS pin of the POGOPIN connector is used as the first pin, the first data pin of the POGOPIN connector is used as the second pin, the second data pin of the POGOPIN connector is used as the third pin, and the GND pin of the POGOPIN connector is used as the fourth pin.
In one embodiment, the charging cord further comprises: the TVS tube is electrically connected between the direct current power supply and the first charging module and between the direct current power supply and the second charging module.
In one embodiment, the charging cord further comprises: and the overvoltage protection circuit is electrically connected between the TVS tube and the first charging module and between the TVS tube and the second charging module.
In one embodiment, the electronic device further comprises: a charging switch;
the charging switch is electrically connected between the first charging module and the rechargeable battery and is used for preventing the first charging module from leaking electricity to the rechargeable battery or preventing the rechargeable battery from leaking electricity to the first charging module;
the electronic equipment controller is electrically connected with the charging switch.
In one embodiment, the charge switch is a load switch.
In one embodiment, the charging switch adopts a MOS tube circuit;
the MOS tube circuit comprises a first NMOS tube and a second NMOS tube;
the S pole of the first NMOS tube is electrically connected with the S pole of the second NMOS tube, and the D pole of the first NMOS tube is electrically connected with the charging wire controller;
the D pole of the second NMOS tube is electrically connected with the rechargeable battery;
the electronic device controller is electrically connected with the G pole of the first NMOS tube and the G pole of the second NMOS tube.
In one embodiment, the electronic device further comprises: a signal transfer switch;
the signal switch is electrically connected between the electronic device controller and the second pin and the third pin.
In one embodiment, the electronic device further comprises: the charging wire still includes: a first temperature detection member;
the electronic device further includes: a second temperature detection member;
the first temperature detection component is electrically connected with the first charging module and used for detecting the temperature of the first charging module;
the second temperature detection component is electrically connected with the second charging module and used for detecting the temperature of the second charging module.
In one embodiment, the first charging module is located at one end of the charging wire body close to the electronic device.
In one embodiment, the second charging module serves as a primary charging module, and the first charging module serves as an auxiliary charging module.
In a second aspect, the present invention further provides a fast charging method, which is applied to the fast charging system of any one of the first aspect;
the method comprises the following steps:
acquiring battery voltage data and battery temperature data of a rechargeable battery;
judging whether the battery voltage data meets a first preset condition or not, generating a first charging signal and a second charging signal when the battery temperature data meets a second preset condition or not, and when the first preset condition is met and the second preset condition is met, the first charging signal is used for controlling a first charging module to charge the rechargeable battery, the second charging signal is used for controlling a second charging module to charge the rechargeable battery, otherwise, generating a third charging signal and a first non-charging signal, wherein the third charging signal is used for controlling the second charging module to charge the rechargeable battery, and the first non-charging signal is used for controlling the first charging module not to charge the rechargeable battery.
In one embodiment, the generating a first charging signal and a second charging signal when the first preset condition is met and the second preset condition is met includes:
when the first preset condition is met and the second preset condition is met, judging whether the battery voltage data meet a third preset condition, generating a first charging signal and a second charging signal when the third preset condition is met, wherein the first charging signal is used for controlling the first charging module to charge the rechargeable battery according to a first preset current, the second charging signal is used for controlling the second charging module to charge the rechargeable battery according to a second preset current, otherwise, generating a fourth charging signal and a fifth charging signal, the fourth charging signal is used for controlling the first charging module to charge the rechargeable battery according to a third preset current, and the fifth charging signal is used for controlling the second charging module to charge the rechargeable battery according to a fourth preset current;
the second preset current and the fourth preset current are both smaller than the third preset current, and the third preset current is smaller than the first preset current.
In one embodiment, the generating the second charging signal and the third charging signal comprises:
when the third preset condition is not met, acquiring a first charging current charged to the rechargeable battery by the first charging module and a second charging current charged to the rechargeable battery by the second charging module;
determining a total charging current according to the first charging current and the second charging current;
and judging whether the total charging current meets a fourth preset condition, generating a fourth charging signal and a fifth charging signal when the total charging current meets the fourth preset condition, and otherwise, generating a sixth charging signal and a first non-charging signal, wherein the sixth charging signal is used for controlling the second charging module to charge the rechargeable battery.
In one embodiment, before the acquiring the battery voltage data and the battery temperature data of the rechargeable battery, the method further includes:
and when the direct-current power supply inputs power to the first charging module and the second charging module for the first time, generating the third charging signal and the first non-charging signal.
The embodiment of the invention has the following beneficial effects:
the invention provides a quick charging system and a method, wherein the system comprises: a charging wire and an electronic device; the charging line is electrically connected between a direct current power supply and the electronic equipment and is used for charging the electronic equipment; the charging wire includes: the charging line comprises a charging line body, a first charging module and a charging line controller, wherein the first charging module and the charging line controller are installed in the charging line body; the electronic device includes: the charging device comprises a rechargeable battery, a second charging module and an electronic device controller; the first charging module and the second charging module are electrically connected between the direct current power supply and the rechargeable battery; the charging wire controller is electrically connected with the first charging module; the electronic device controller is electrically connected with the charging wire controller and the second charging module and is used for controlling the second charging module to charge the rechargeable battery, and/or controlling the first charging module to charge the rechargeable battery through the charging wire controller. The charging is carried out through the first charging module and the second charging module, the charging power of the single charging module is reduced, under the condition that the charging power required by quick charging is kept, the heat generated by the single charging module is reduced, meanwhile, the first charging module is arranged in the charging line body, partial heat or all heat generated by charging is transferred out of the electronic equipment, quick charging to the electronic equipment is realized, and the problem of serious heat generation inside the electronic equipment during quick charging is avoided simultaneously, so that potential charging safety risks are avoided, and the user experience of the electronic equipment is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a schematic diagram of a fast charging system in one embodiment;
fig. 2 is a detailed structural diagram of the quick charging system of fig. 1;
FIG. 3 is a flow diagram of a fast charging method in one embodiment;
FIG. 4 is a flow diagram of a fast charging method in one embodiment;
FIG. 5 is a flow diagram of a fast charging method in one embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a quick charging system, aiming at solving the technical problems that in the prior art, the inside of equipment is heated seriously due to quick charging and potential charging safety risks exist. The quick charging system can be applied to wearable devices, for example, the wearable devices include watches (including products such as watches and wristbands) supported by wrists, shoes (including products worn on shoes, socks or other legs in the future) supported by feet, glasses (including glasses, helmets, head bands and the like) supported by heads, and various non-mainstream product forms such as smart clothes, schoolbag, crutch and accessories. The quick charging system can also be applied to other electronic devices, such as other electronic devices including but not limited to mobile phones and game machines. The quick charging system transfers part of the charging loop out of the target equipment (namely the wearable equipment and other electronic equipment) so as to avoid serious internal heating of the target equipment, avoid potential charging safety risks and improve user experience of the target equipment.
As shown in fig. 1 and 2, in one embodiment, the quick charging system includes: a charging line 10, an electronic device 20;
the charging wire 10 is electrically connected between a direct current power supply and the electronic device 20, and is used for charging the electronic device 20;
the charging wire 10 includes: the charging line comprises a charging line body, a first charging module 31 and a charging line controller 111 which are installed in the charging line body;
the electronic device 20 includes: a rechargeable battery 211, a second charging module 32, an electronic device controller 213;
the first charging module 31 and the second charging module 32 are electrically connected between the dc power supply and the rechargeable battery 211;
the charging line controller 111 is electrically connected to the first charging module 31;
the electronic device controller 213 is electrically connected to the charging line controller 111 and the second charging module 32, and is configured to control the second charging module 32 to charge the rechargeable battery 211, and/or control the first charging module 31 to charge the rechargeable battery 211 through the charging line controller 111.
The system of the embodiment comprises: a charging line 10, an electronic device 20; the charging wire 10 is electrically connected between a direct current power supply and the electronic device 20, and is used for charging the electronic device 20; the charging wire 10 includes: the charging line comprises a charging line body, a first charging module 31 and a charging line controller 111 which are installed in the charging line body; the electronic device 20 includes: a rechargeable battery 211, a second charging module 32, an electronic device controller 213; the first charging module 31 and the second charging module 32 are electrically connected between the dc power supply and the rechargeable battery 211; the charging line controller 111 is electrically connected to the first charging module 31; the electronic device controller 213 is electrically connected to the charging line controller 111 and the second charging module 32, and is configured to control the second charging module 32 to charge the rechargeable battery 211, and/or control the first charging module 31 to charge the rechargeable battery 211 through the charging line controller 111. The charging is carried out through the first charging module 31 and the second charging module 32, the charging power of a single charging module is reduced, under the condition that the charging power required by quick charging is kept, the heat generated by the single charging module is reduced, meanwhile, the first charging module 31 is arranged in the charging line body, partial heat or all heat generated by charging is transferred out of the electronic equipment 20, quick charging to the electronic equipment 20 is realized, and meanwhile, the problem that the inside of the electronic equipment 20 generates heat seriously when quick charging is avoided, so that the potential charging safety risk is avoided, and the user experience of the electronic equipment 20 is improved.
The electronic device 20 includes, but is not limited to, a wearable device, a mobile phone, a game console.
The rechargeable battery 211 is a rechargeable battery with limited number of charges, and the rechargeable battery 211 includes, but is not limited to, a lithium ion battery, a thin film battery, and a graphene battery.
The first charging module 31 and the second charging module 32 are configured to receive a dc power and provide a dc charging current to the rechargeable battery 211. The first charging module 31 includes a first charging chip and a first auxiliary circuit, and it can be understood that heat generated by the first charging module 31 during charging is mainly generated by heat generated by the first charging chip during charging. The second charging module 32 includes a second charging chip and a second auxiliary circuit, and it can be understood that the heat generated by the second charging module 32 during charging is mainly generated by the heat generated by the second charging chip during charging.
Optionally, the specifications of the first charging module 31 and the second charging module 32 may be the same or different.
The first auxiliary circuit and the second auxiliary circuit may implement an auxiliary function, such as temperature detection, which is not limited in this example.
Alternatively, the power adapter may provide dc power to the first charging module 31 and the second charging module 32; other devices capable of providing dc power to the first charging module 31 and the second charging module 32 may also be provided, for example, other devices capable of providing dc power to the outside include, but are not limited to, computers. The power adapter can convert an input alternating current power supply into a direct current power supply to be output.
Optionally, the first charging module 31 and the second charging module 32 charge the rechargeable battery 211 in a parallel manner, and the first charging module 31 and the second charging module 32 are arranged in a parallel manner, so as to achieve the purpose of shunting, when the voltages are the same, the shunting can reduce the respective charging powers of the first charging module 31 and the second charging module 32, and the parallel charging of the first charging module 31 and the second charging module 32 can achieve the high power required by quick charging.
The charging wire 10 is a wire connected between the dc power supply and the electronic device 20, and may be a wire that transmits current or a wire that transmits current and transmits data.
Wherein, the charging wire body is the oversheath of charging wire 10, and inside is equipped with the conductor, and the conductor includes the wire of copper, aluminium material etc.. It will be appreciated that the outer circumference of the conductor may also be provided with an inner sheath for improved safety.
The electronic device Controller 213 is configured to control the electronic device 20 and the charging line Controller 111 to operate, and may select a CPU (central processing unit) and/or an MCU (micro control unit) and/or a PLC (Programmable Logic Controller) and/or an FPGA (Field Programmable Gate Array), which is not limited in this example.
The charging line Controller 111 is configured to control the first charging module 31 to operate, and may select a CPU (central processing unit) and/or an MCU (micro control unit) and/or a PLC (Programmable Logic Controller) and/or an FPGA (Field Programmable Gate Array), which is not limited in this example.
The controlling the second charging module 32 to charge the rechargeable battery 211, and/or controlling the first charging module 31 to charge the rechargeable battery 211 through the charging line controller 111 specifically includes: the second charging module 32 is controlled to charge the rechargeable battery 211, or the charging line controller 111 is used for controlling the first charging module 31 to charge the rechargeable battery 211, or the second charging module 32 is controlled to charge the rechargeable battery 211 and the charging line controller 111 is used for controlling the first charging module 31 to charge the rechargeable battery 211.
In one embodiment, the electronic device 20 further includes a connector 212;
the charging cord 10 further comprises: the charging wire body is connected with the direct-current power supply through the USB interface;
the first pin 2121 of the connector 212 is electrically connected to the power end of the USB interface and the second charging module 32;
the second pin 2122 of the connector 212 is electrically connected to the electronic device controller 213, the rechargeable battery 211, the rechargeable wire controller 111 and the first charging module 31;
a third pin 2123 of the connector 212 is electrically connected to the electronic device controller 213 and the charging line controller 111;
the fourth pin 2124 of the connector 212 is electrically connected to the ground terminal of the USB interface;
the second pin is further electrically connected with a D + end of the USB interface, the third pin is further electrically connected with a D-end of the USB interface, or the second pin is further electrically connected with the D-end of the USB interface, and the third pin is further electrically connected with the D + end of the USB interface.
The present embodiment uses the second pin 2122 of the connector 212 for multiplexing of SCL signal, 12C signal (the electronic device controller 213 and the charging line controller 111 communication signal) and VBAT (the charging module in the charging line body is electrically connected to the charging battery 211 for charging the charging battery 211), and uses the third pin 2123 of the connector 212 for multiplexing of SDA signal and 12C signal; alternatively, the second pin 2122 of the connector 212 is used for multiplexing of the SDA signal, the 12C signal, and the VBAT, and the third pin 2123 of the connector 212 is used for multiplexing of the SCL signal and the 12C signal. The charging module is controlled to charge the rechargeable battery 211 through four pins, so that the number of pins of the connector 212 is reduced, and the manufacturing cost of the connector 212 is reduced. Also, the volume of the connector 212 is reduced, thereby reducing the volume of the electronic device 20 while reducing the impedance.
The connector 212 is a device that can transmit signals and current. It is understood that the connector 212 of the electronic device 20 of the present invention may be a male connector 212, a female connector 212, or a non-male-female connector.
It is understood that each pin (i.e., first pin, second pin, third pin, fourth pin) of the connector 212 may have only one connection point and have the same location as the connection point, may have two connection points and have any location of the pin as the connection point, and may have three connection points and any location of the pin.
Optionally, the two connection points and taking any position of the pin as the connection point include: the pin of the connector 212 has two connection points and both ends of the pin are used as the connection points.
In one embodiment, the connector 212 is a POGOPIN connector;
the VBUS pin of the POGOPIN connector is used as the first pin, the first data pin of the POGOPIN connector is used as the second pin, the second data pin of the POGOPIN connector is used as the third pin, and the GND pin of the POGOPIN connector is used as the fourth pin. Based on the advantages of good reliability, small volume, more accurate contact and long service life of the POGOPIN connector, the charging reliability of the quick charging system is improved, and the service life of the electronic equipment 20 is prolonged.
The POGOPIN connector is a magnetic connector 212, and the standard POGOPIN connector has four pins.
Wherein, the VBUS pin of the POGOPIN connector is connected with a 5V power supply. The GND pin of the POGOPIN connector is a ground pin.
In another embodiment, the charging cord 10 does not include the USB interface;
the first pin 2121 of the connector 212 is electrically connected to the positive terminal of the dc power supply and the second charging module 32;
the second pin 2122 of the connector 212 is electrically connected to the electronic device controller 213, the rechargeable battery 211, the rechargeable wire controller 111 and the first charging module 31;
the third pin 2123 of the connector 212 is electrically connected to the electronic device controller 213 and the charging line controller 111;
the fourth pin 2124 of the connector 212 is electrically connected to the ground of the dc power supply.
In one embodiment, the charging cord 10 further comprises: and a TVS tube electrically connected between the dc power supply and the first and second charging modules 31 and 32. The influence of surge pulse on the circuit safety of the quick charging system and the electronic equipment 20 can be prevented by arranging the TVS tube, the charging safety is improved, and the service life of the electronic equipment 20 is prolonged.
The specification of the TVS tube may be selected according to parameters of the fast charging system, which is not described herein.
In one embodiment, the charging cord 10 further comprises: and the overvoltage protection circuit is electrically connected between the TVS tube and the first and second charging modules 31 and 32. The overvoltage protection component can protect the quick charging system and the electronic device 20 circuit, and the quick charging system and the electronic device 20 circuit are prevented from being damaged by too high voltage, so that the charging safety is further improved, and the service life of the electronic device 20 is further prolonged.
The overvoltage protection component may be an overvoltage protection circuit or an overvoltage protector which can realize overvoltage protection in the prior art, and details are not described herein.
In one embodiment, the electronic device 20 further comprises: a charge switch 214;
the charging switch 214 is electrically connected between the first charging module 31 and the rechargeable battery 211, and is used for preventing the first charging module 31 from leaking electricity to the rechargeable battery 211 or preventing the rechargeable battery 211 from leaking electricity to the first charging module 31;
the electronic device controller 213 is electrically connected to the charging switch 214. By providing the charge switch 214, the charging safety of the rapid charging system is further improved.
The charging switch 214 is electrically connected to the second pin 2122 of the connector 212, so as to be electrically connected to the first charging module 31 through the second pin 2122 of the connector 212.
The electronic device controller 213 sends a charging signal to turn on and a charging signal to turn off the charging switch 214. The charging signal is used to control the charging switch 214 to be turned on, and at this time, the charging line controller 111 controls the first charging module 31 to charge the rechargeable battery 211. The charging-off signal is used to control the charging switch 214 to be turned off, and at this time, the charging line controller 111 controls the first charging module 31 not to charge the rechargeable battery 211.
In one embodiment, the charge switch 214 is a load switch.
In one embodiment, the charge switch 214 is a MOS transistor circuit;
the MOS tube circuit comprises a first NMOS tube and a second NMOS tube;
the S pole of the first NMOS transistor is electrically connected to the S pole of the second NMOS transistor, and the D pole of the first NMOS transistor is electrically connected to the charging line controller 111;
the D pole of the second NMOS transistor is electrically connected to the rechargeable battery 211;
the electronic device controller 213 is electrically connected to the G electrode of the first NMOS transistor and the G electrode of the second NMOS transistor. Through first NMOS pipe, second NMOS pipe first charge module 31 with can realize better isolation effect between rechargeable battery 211 to the safety of charging of quick charge system has further been improved.
In another embodiment, the MOS transistor circuit only uses one NMOS transistor, so that the number of MOS transistor circuit components is reduced, and the manufacturing cost of the electronic device 20 is reduced.
In one embodiment, the electronic device 20 further comprises: a signal changeover switch 215;
the signal switch 215 is electrically connected between the electronic device controller 213 and the second and third pins. Through the signal switch 215, signal switching is realized, and the number of parts of the electronic equipment 20 is reduced under the condition of pin multiplexing.
The signals switched by the signal switch 215 include: the electronic device controller 213 controls a signal (e.g., a 12C signal) in which the first charging module 31 operates, and a differential signal (e.g., an SCL signal and an SDA signal) in which the USB interface is connected.
In one embodiment, the electronic device 20 further comprises: the charging wire 10 further includes: a first temperature detection member;
the electronic device 20 further includes: a second temperature detection member;
the first temperature detecting part is electrically connected with the first charging module 31 and used for detecting the temperature of the first charging module 31;
the second temperature detection part is electrically connected to the second charging module 32, and is configured to detect a temperature of the second charging module 32. The first temperature detection component can prevent the temperature of the first charging module 31 from being too high, and the second temperature detection component can prevent the temperature of the first charging module 31 from being too high, so that the charging safety of the quick charging system is further improved.
The first temperature detection component is used for detecting the temperature of the first charging chip. The first temperature detection member may be in direct contact with the first charging chip, and may also be disposed at a position close to the first charging chip.
The second temperature detection component is used for detecting the temperature of the second charging chip. The second temperature detecting member may be in direct contact with the second charging chip, and may also be disposed at a position close to the second charging chip.
The first temperature detecting component and the second temperature detecting component may adopt thermistors, which are not specifically limited in this example.
In one embodiment, the first charging module 31 is located at one end of the charging line body close to the electronic device 20, so that the line length between the first charging module 31 and the rechargeable battery 211 can be reduced, which is beneficial to reducing impedance and improving charging efficiency.
It is understood that the first charging module 31 may also be located at other positions of the charging line body, for example, near one end of the dc power source, near a midpoint of the charging line body, and is not limited herein.
In one embodiment, the second charging module 32 serves as a main charging module, and the first charging module 31 serves as an auxiliary charging module. The main charging module and the auxiliary charging module are distinguished, so that charging control is facilitated.
The main charging module charges the rechargeable battery 211 in each charging mode. And an auxiliary charging module for charging the rechargeable battery 211 in a partial charging mode.
Alternatively, the quick charging system may perform quick charging when the charging cord 10 is connected to the power adapter. When the charging cord 10 is connected to other devices that can supply dc power to the outside, the quick charging system may not perform quick charging, and only the main charging module is used to charge the rechargeable battery 211 at this time.
Optionally, the specifications of the main charging module and the auxiliary charging module may be the same or different.
In one embodiment, a fast charging method is provided, which is applied to the fast charging system described above, and the fast charging method is executed by an electronic device controller, which may be a master controller of the electronic device and/or a slave controller of the electronic device.
As shown in fig. 3, in one embodiment, the method comprises:
s302, acquiring battery voltage data and battery temperature data of the rechargeable battery;
the electronic device controller may obtain and/or receive battery voltage data and battery temperature data of the rechargeable battery.
Wherein the battery voltage data comprises: battery voltage value, detection time. The detection time is a specific time point. The battery voltage value is a specific voltage value.
Wherein the battery temperature data comprises: battery temperature value, detection time. The battery temperature value is a specific temperature value.
S304, whether the battery voltage data meet a first preset condition or not is judged, whether the battery temperature data meet a second preset condition or not is judged, when the first preset condition is met and the second preset condition is met, a first charging signal and a second charging signal are generated, the first charging signal is used for controlling a first charging module to charge the rechargeable battery, the second charging signal is used for controlling a second charging module to charge the rechargeable battery, otherwise, a third charging signal and a first non-charging signal are generated, the third charging signal is used for controlling the second charging module to charge the rechargeable battery, and the first non-charging signal is used for controlling the first charging module not to charge the rechargeable battery.
The electronic device controller judges whether the battery voltage data meets a first preset condition or not, and whether the battery temperature data meets a second preset condition or not.
When the first preset condition is met and the second preset condition is met, the electronic equipment controller controls generation of a first charging signal and a second charging signal. And when the first preset condition is not met or the second preset condition is not met, the electronic equipment controller controls to generate a third charging signal and a first non-charging signal. Different signals are adopted in different situations, different charging schemes are adopted in different situations, rapid charging can be effectively carried out, charging safety is also considered, and the charging stage of the rechargeable battery is also considered.
Wherein the first preset condition is greater than a first preset voltage value. The second preset condition is that the temperature is within a preset temperature range. And judging whether the battery voltage data meets a first preset condition or not, judging whether the battery temperature data meets a second preset condition or not, namely judging whether the battery voltage value of the battery voltage data is greater than a first preset voltage value or not, and judging whether the battery temperature value of the battery temperature data is within a preset temperature range or not.
Alternatively, the first preset voltage value is 3V, the preset temperature range is 20 ℃ to 45 ℃ (including 20 ℃ and including 45 ℃), that is, it is determined whether the battery voltage value of the battery voltage data is greater than 3V, and it is determined whether the battery temperature value of the battery temperature data is 20 ℃ to 45 ℃ (including 20 ℃ and including 45 ℃).
The method of the embodiment is applied to a quick charging system, and the system comprises: a charging line and an electronic device; the charging line is electrically connected between a direct current power supply and the electronic equipment and is used for charging the electronic equipment; the charging wire includes: the charging line comprises a charging line body, a first charging module and a charging line controller, wherein the first charging module and the charging line controller are installed in the charging line body; the electronic device includes: the charging device comprises a rechargeable battery, a second charging module and an electronic device controller; the first charging module and the second charging module are electrically connected between the direct current power supply and the rechargeable battery; the charging wire controller is electrically connected with the first charging module; the electronic device controller is electrically connected with the charging wire controller and the second charging module and is used for controlling the second charging module to charge the rechargeable battery, and/or controlling the first charging module to charge the rechargeable battery through the charging wire controller. The charging is carried out through the first charging module and the second charging module, the charging power of the single charging module is reduced, under the condition that the charging power required by quick charging is kept, the heat generated by the single charging module is reduced, meanwhile, the first charging module is arranged in the charging line body, partial heat or all heat generated by charging is transferred out of the electronic equipment, quick charging to the electronic equipment is realized, and the problem of serious heat generation inside the electronic equipment during quick charging is avoided simultaneously, so that potential charging safety risks are avoided, and the user experience of the electronic equipment is improved.
In one embodiment, the generating a first charging signal and a second charging signal when the first preset condition is met and the second preset condition is met includes: when the first preset condition is met and the second preset condition is met, judging whether the battery voltage data meet a third preset condition, generating a first charging signal and a second charging signal when the third preset condition is met, wherein the first charging signal is used for controlling the first charging module to charge the rechargeable battery according to a first preset current, the second charging signal is used for controlling the second charging module to charge the rechargeable battery according to a second preset current, otherwise, generating a fourth charging signal and a fifth charging signal, the fourth charging signal is used for controlling the first charging module to charge the rechargeable battery according to a third preset current, and the fifth charging signal is used for controlling the second charging module to charge the rechargeable battery according to a fourth preset current; the second preset current and the fourth preset current are both smaller than the third preset current, and the third preset current is smaller than the first preset current.
When the first preset condition is met and the second preset condition is met, the electronic equipment controller judges whether the battery voltage data meet a third preset condition; when the third preset condition is met, the electronic equipment controller controls to generate the first charging signal and the second charging signal; and when the third preset condition is not met, the electronic equipment controller controls to generate a fourth charging signal and a fifth charging signal.
Wherein the third preset condition comprises: is smaller than the second preset voltage value. And judging whether the battery voltage data meet a third preset condition, namely judging whether the battery voltage value of the battery voltage data is smaller than a second preset voltage value.
Optionally, the second preset voltage value is 4.4V. That is, it is determined whether the battery voltage value of the battery voltage data is less than 4.4V.
Optionally, when the quick charging method of the present invention is applied to a quick charging system of a wearable device, the first preset current is 1.5A, the second preset current is 500mA, the third preset current is 1.3A, and the fourth preset current is 500 mA.
The embodiment realizes that the main charging power is put outside the electronic equipment in the rapid charging stage, and avoids the problem of serious internal heating of the electronic equipment during rapid charging, thereby avoiding potential charging safety risk; and meanwhile, slow charging at the end stage is considered, the effect of protecting the rechargeable battery is realized, and the service life of the rechargeable battery is prolonged.
As shown in fig. 4, in one embodiment, the generating the fourth charging signal and the fifth charging signal otherwise comprises:
s402, acquiring battery voltage data and battery temperature data of the rechargeable battery;
s404, judging whether the battery voltage data meet a first preset condition or not, and whether the battery temperature data meet a second preset condition or not;
s406, when the first preset condition is not met or the second preset condition is not met, generating a third charging signal and a first non-charging signal, wherein the third charging signal is used for controlling the second charging module to charge the rechargeable battery, and the first non-charging signal is used for controlling the first charging module not to charge the rechargeable battery;
s408, when the first preset condition is met and the second preset condition is met, judging whether the battery voltage data meet a third preset condition;
s410, when the third preset condition is met, generating a first charging signal and a second charging signal, wherein the first charging signal is used for controlling the first charging module to charge the rechargeable battery according to a first preset current, and the second charging signal is used for controlling the second charging module to charge the rechargeable battery according to a second preset current;
s412, when the third preset condition is not met, acquiring a first charging current for the first charging module to charge the rechargeable battery and a second charging current for the second charging module to charge the rechargeable battery;
the first charging current is the current charged to the rechargeable battery by the first charging module in the charging wire.
The second charging current is the current for charging the rechargeable battery by the second charging module in the electronic equipment.
S414, determining a total charging current according to the first charging current and the second charging current;
and adding the first charging current and the second charging current to calculate the total charging current.
And S416, judging whether the total charging current meets a fourth preset condition, generating a fourth charging signal and a fifth charging signal when the total charging current meets the fourth preset condition, and otherwise, generating a sixth charging signal and the first non-charging signal, wherein the sixth charging signal is used for controlling the second charging module to charge the rechargeable battery.
The fourth preset condition is smaller than the preset charging current. And judging whether the total charging current meets a fourth preset condition, namely judging whether the total charging current is smaller than a preset charging current.
When the fourth preset condition is met, the electronic device controller controls generation of the fourth charging signal and the fifth charging signal. When the fourth preset condition is not met, the electronic device controller controls to generate a sixth charging signal and a first non-charging signal, controls the second charging module to charge the rechargeable battery according to the sixth charging signal, and controls the first charging module not to charge the rechargeable battery according to the first non-charging signal.
The embodiment realizes that the main charging power is put outside the electronic equipment in the rapid charging stage, and avoids the problem of serious internal heating of the electronic equipment during rapid charging, thereby avoiding potential charging safety risk; and meanwhile, slow charging at the end stage is considered, the effect of protecting the rechargeable battery is realized, and the service life of the rechargeable battery is prolonged. And in the end stage, the second charging module is adopted to charge the rechargeable battery, so that the charging control is simplified.
As shown in fig. 5, in an embodiment, before the acquiring the battery voltage data and the battery temperature data of the rechargeable battery, the method further includes:
s502, when a direct current power supply inputs power to the first charging module and the second charging module for the first time, generating a third charging signal and a first non-charging signal;
when the direct current power supply inputs power to the first charging module and the second charging module for the first time, the electronic device controller generates the third charging signal and the first non-charging signal.
S502, acquiring battery voltage data and battery temperature data of the rechargeable battery;
s504, judge whether battery voltage data satisfies first preset condition, and, whether battery temperature data satisfies second preset condition, when satisfying first preset condition and satisfying second preset condition generates first charge signal and second charge signal, first charge signal be used for control first charge module to rechargeable battery charges, the second charge signal be used for control second charge module to rechargeable battery charges, otherwise generate third charge signal and first not charge signal, the third charge signal is used for control second charge module to rechargeable battery charges, first not charge signal is used for control first charge module not to rechargeable battery charges.
According to the embodiment, the direct current power supply is switched on, the charging module is firstly charged, and the second charging module is firstly charged to the rechargeable battery, so that the rechargeable battery is prevented from being overcharged under the condition that the charging stage of the rechargeable battery is not clear, the effect of protecting the rechargeable battery is further realized, and the service life of the rechargeable battery is further prolonged.
It should be noted that the above-mentioned fast charging system and fast charging method belong to a general inventive concept, and the contents in the embodiments of the fast charging system and the fast charging method are mutually applicable.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the program is executed. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (15)

1. A fast charging method, characterized in that the method is applied to a fast charging system, the fast charging system comprising: a charging wire and an electronic device;
the charging line is electrically connected between a direct current power supply and the electronic equipment and is used for charging the electronic equipment;
the charging wire includes: the charging line comprises a charging line body, a first charging module and a charging line controller, wherein the first charging module and the charging line controller are installed in the charging line body;
the electronic device includes: the charging device comprises a rechargeable battery, a second charging module and an electronic device controller;
the first charging module and the second charging module are electrically connected between the direct current power supply and the rechargeable battery;
the charging wire controller is electrically connected with the first charging module;
the electronic device controller is electrically connected with the charging wire controller and the second charging module and is used for controlling the second charging module to charge the rechargeable battery, and/or controlling the first charging module to charge the rechargeable battery through the charging wire controller;
the method comprises the following steps:
acquiring battery voltage data and battery temperature data of the rechargeable battery;
judging whether the battery voltage data meets a first preset condition or not, and whether the battery temperature data meets a second preset condition or not, generating a first charging signal and a second charging signal when the first preset condition is met and the second preset condition is met, wherein the first charging signal is used for controlling a first charging module to charge the rechargeable battery, the second charging signal is used for controlling a second charging module to charge the rechargeable battery, otherwise, generating a third charging signal and a first non-charging signal, the third charging signal is used for controlling the second charging module to charge the rechargeable battery, and the first non-charging signal is used for controlling the first charging module not to charge the rechargeable battery;
when the first preset condition is satisfied and the second preset condition is satisfied, generating a first charging signal and a second charging signal includes: when the first preset condition is met and the second preset condition is met, judging whether the battery voltage data meet a third preset condition, generating a first charging signal and a second charging signal when the third preset condition is met, wherein the first charging signal is used for controlling the first charging module to charge the rechargeable battery according to a first preset current, the second charging signal is used for controlling the second charging module to charge the rechargeable battery according to a second preset current, otherwise, generating a fourth charging signal and a fifth charging signal, the fourth charging signal is used for controlling the first charging module to charge the rechargeable battery according to a third preset current, and the fifth charging signal is used for controlling the second charging module to charge the rechargeable battery according to a fourth preset current; the second preset current and the fourth preset current are both smaller than the third preset current, and the third preset current is smaller than the first preset current;
wherein the first preset condition is as follows: the battery voltage data is greater than a first preset voltage value; the second preset condition is as follows: the battery voltage data is within a preset temperature range; the third preset condition is as follows: the battery voltage data is smaller than a second preset voltage value.
2. The fast charging method of claim 1, wherein the otherwise generating a fourth charging signal and the fifth charging signal comprises:
when the third preset condition is not met, acquiring a first charging current charged to the rechargeable battery by the first charging module and a second charging current charged to the rechargeable battery by the second charging module;
determining a total charging current according to the first charging current and the second charging current;
and judging whether the total charging current meets a fourth preset condition, generating a fourth charging signal and a fifth charging signal when the total charging current meets the fourth preset condition, and otherwise, generating a sixth charging signal and a first non-charging signal, wherein the sixth charging signal is used for controlling the second charging module to charge the rechargeable battery.
3. The quick charging method according to any one of claims 1 to 2, further comprising, before the acquiring the battery voltage data and the battery temperature data of the rechargeable battery:
and when the direct-current power supply inputs power to the first charging module and the second charging module for the first time, generating the third charging signal and the first non-charging signal.
4. A fast charging system for performing the fast charging method of claim 1.
5. The quick charging system of claim 4, wherein the electronic device further comprises a connector;
the charging wire further comprises: the charging wire body is connected with the direct-current power supply through the USB interface;
a first pin of the connector is electrically connected with a power supply end of the USB interface and the second charging module;
the second pin of the connector is electrically connected with the electronic equipment controller, the rechargeable battery, the charging wire controller and the first charging module;
the third pin of the connector is electrically connected with the electronic equipment controller and the charging line controller;
a fourth pin of the connector is electrically connected with a grounding end of the USB interface;
the second pin is further electrically connected with a D + end of the USB interface, and the third pin is further electrically connected with a D-end of the USB interface, or the second pin is further electrically connected with the D-end of the USB interface, and the third pin is further electrically connected with the D + end of the USB interface.
6. The quick charging system of claim 5, wherein the connector is a POGOPIN connector;
the VBUS pin of the POGOPIN connector is used as the first pin, the first data pin of the POGOPIN connector is used as the second pin, the second data pin of the POGOPIN connector is used as the third pin, and the GND pin of the POGOPIN connector is used as the fourth pin.
7. The quick charging system of claim 4, wherein the charging cord further comprises: the TVS tube is electrically connected between the direct current power supply and the first charging module and between the direct current power supply and the second charging module.
8. The quick charging system of claim 7, wherein the charging cord further comprises: and the overvoltage protection circuit is electrically connected between the TVS tube and the first charging module and between the TVS tube and the second charging module.
9. The quick charging system of claim 4, wherein the electronic device further comprises: a charging switch;
the charging switch is electrically connected between the first charging module and the rechargeable battery and is used for preventing the first charging module from leaking electricity to the rechargeable battery or preventing the rechargeable battery from leaking electricity to the first charging module;
the electronic equipment controller is electrically connected with the charging switch.
10. The rapid charging system according to claim 9, wherein the charging switch is a load switch.
11. The quick charging system of claim 9, wherein the charging switch is a MOS transistor circuit;
the MOS tube circuit comprises a first NMOS tube and a second NMOS tube;
the S pole of the first NMOS tube is electrically connected with the S pole of the second NMOS tube, and the D pole of the first NMOS tube is electrically connected with the charging wire controller;
the D pole of the second NMOS tube is electrically connected with the rechargeable battery;
and the electronic equipment controller is electrically connected with the G pole of the first NMOS tube and the G pole of the second NMOS tube.
12. The quick charging system of claim 5, wherein the electronic device further comprises: a signal transfer switch;
the signal switch is electrically connected between the electronic device controller and the second pin and the third pin.
13. The quick charging system according to any one of claims 4 to 12, wherein the electronic device further comprises: the charging wire further comprises: a first temperature detection member;
the electronic device further includes: a second temperature detection member;
the first temperature detection component is electrically connected with the first charging module and used for detecting the temperature of the first charging module;
the second temperature detection component is electrically connected with the second charging module and used for detecting the temperature of the second charging module.
14. The quick charging system according to any one of claims 4 to 12, wherein the first charging module is located at an end of the charging wire body near the electronic device.
15. The rapid charging system according to any one of claims 4 to 12, wherein the second charging module is a primary charging module and the first charging module is a secondary charging module.
CN202010661301.4A 2020-07-10 2020-07-10 Quick charging system and method Active CN111884281B (en)

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