CN106130141A - A kind of charge control method, charging system and electronic equipment - Google Patents
A kind of charge control method, charging system and electronic equipment Download PDFInfo
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- CN106130141A CN106130141A CN201610740097.9A CN201610740097A CN106130141A CN 106130141 A CN106130141 A CN 106130141A CN 201610740097 A CN201610740097 A CN 201610740097A CN 106130141 A CN106130141 A CN 106130141A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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Abstract
The embodiment of the invention discloses a kind of charge control method, charging system and electronic equipment, in order to prevent electronic equipment charge port from burning, improve the safety of electronic equipment charging.Described electronic equipment includes: battery and charging socket, described charging socket is provided with power supply shell fragment and grounding elastic part, it is characterized in that, described electronic equipment also includes: main control chip and charhing unit, wherein, described charhing unit is series between power supply shell fragment and described battery, and be connected with main control chip, described main control chip is for obtaining the first temperature that charge port is current, judge that whether described first temperature is more than the first setting threshold value, if it is, send control instruction to charhing unit, control charhing unit and stop powering to described battery.Stopping powering to described battery owing to can control charhing unit, the electric current making the circuit including charhing unit is 0, and then is possible to prevent electronic equipment charge port to burn.
Description
Technical Field
The present invention relates to the field of electronic device charging technologies, and in particular, to a charging control method, a charging system, and an electronic device.
Background
With the increase of the configuration of the electronic device, the consumption of the electric quantity of the electronic device is higher, and therefore the requirement on the charging device is higher. The charging device is connected to the electronic device through the charging connector to charge the electronic device, as shown in fig. 1A, the charging mode of the electronic device includes the following modes: a power plug of the charging device obtains power from a conventional power outlet, the charging device converting alternating current to direct current at a predetermined voltage using conventional components, the predetermined voltage being suitable for charging the electronic device via a conventional charging connector; alternatively, the power plug may be a conventional DC power plug that includes conventional components that convert incoming DC current and voltage into the appropriate DC current and voltage for charging the electronic device, such that the electronic device may be charged through the charging connector; still alternatively, the charging device may contain a battery for providing charging current in the event that no AC power source is available or the charging device does not include a power plug.
When the connection is abnormal or the charging connector spring plate is abnormal, for example: 1. when a conductive foreign matter is introduced between the charging connector power spring or the grounding spring and the power spring or the grounding spring in the charging jack of the electronic equipment, equivalently, a resistor is additionally introduced between the charging connector spring and the corresponding spring in the charging jack of the electronic equipment, equivalently, the contact impedance between the charging connector and the corresponding spring in the charging jack of the electronic equipment is increased, namely Rs231 and Rs232 are increased; 2. when the reverse folding angle of the charging connector elastic sheet is abnormal due to the shape change, the contact area between the charging connector elastic sheet and the elastic sheet in the charging jack of the electronic equipment is too small (the reverse folding angle of the elastic sheet is too small, so that the contact point with the small area is formed by the elastic sheet and the socket elastic sheet) or the surface of the elastic sheet in the charging jack of the electronic equipment is abnormal (such as metal oxidation on the surface of the elastic sheet and the like), the impedance of the charging connector elastic sheet in contact with the elastic sheet in the charging jack of the electronic equipment is increased, the contact impedance is also increased, and the equivalent is that the Rs231 and the Rs232 are.
In the above situation, several tens of times or even more than one hundred times higher contact resistance is generated between the charging connector and the corresponding spring piece of the charging jack of the electronic device than in normal connection, the total abnormal contact resistance is Rs23, Rs23 is Rs231+ Rs232, and the heating power of the abnormal contact resistance is in proportion to Rs 23.
As shown in the equivalent circuit diagram of fig. 1B, the current flows from the Power (Power) spring of the charging connector to the Power spring of the charging jack through the equivalent resistor Rs231, and then flows back to the GND spring of the charging connector through the Ground (GND) spring of the charging jack and the equivalent resistor Rs 232. When foreign matters are introduced between the charging connector and the corresponding elastic sheet of the charging socket of the electronic equipment and the elastic sheet in the charging socket of the electronic equipment is abnormal, the contact impedance between the charging connector and the corresponding elastic sheet of the charging socket of the electronic equipment is increased sharply, the heating value of the charging port is increased sharply, and the potential danger of burning the charging port exists. And the charging port connector shell fragment area is little heat dispersion poor, so contact impedance is overheated to burn out the risk when unusual, makes the security greatly reduced that electronic equipment charges.
Disclosure of Invention
The embodiment of the invention discloses a charging control method, a charging system and electronic equipment, which are used for preventing a charging port of the electronic equipment from being burnt and improving the charging safety of the electronic equipment.
In order to achieve the above object, an embodiment of the present invention discloses a charging control method, a charging system, and an electronic device, including: battery and charging socket, charging socket is provided with power shell fragment and ground connection shell fragment, electronic equipment still includes: the main control chip and the charging unit; wherein,
the charging unit is connected in series between the power supply elastic sheet and the battery and is connected with the main control chip;
the main control chip is used for obtaining the current temperature of a charging port of the electronic equipment, judging whether the temperature is greater than a first set threshold value, if so, sending a control instruction to the charging unit, and controlling the charging unit to stop supplying power to the battery.
Further, the electronic device further includes: a load switch;
the load switch is connected in series between the power supply elastic sheet and the charging unit and is connected with the main control chip;
and the main control chip is used for sending a control instruction to the load switch to control the load switch to be switched off when judging that the temperature is greater than a first set threshold value.
Furthermore, the inner wall of the charging socket of the electronic equipment is wrapped with a metal layer, the metal layer on the bottom surface of the charging socket is provided with an insulating layer, the insulating layer is provided with a power supply elastic sheet and a grounding elastic sheet, and the electronic equipment further comprises a logic switch;
the logic switch is connected between the grounding elastic sheet and the metal layer in series and is connected with the main control chip;
and the main control chip is used for sending a control instruction to the logic switch to control the logic switch to be switched off when judging that the temperature is greater than a first set threshold value.
Further, the electronic device further includes a communication unit;
the communication unit is connected with the main control chip;
the main control chip is used for sending a charging stopping control instruction to the communication unit when the temperature is judged to be greater than a first set threshold value;
and after receiving the charging stop control instruction sent by the main control chip, the communication unit sends the charging stop control instruction to the charging equipment.
Further, the main control chip is configured to send a charging stop control instruction with a current of 0 to the communication unit when it is determined that the temperature is greater than a first set threshold.
Furthermore, at least one data elastic sheet is laid on the insulating layer of the charging socket;
the communication unit is connected with the at least one data elastic sheet, and the data elastic sheet is used for being connected with a data line in the charging connector;
and the communication unit sends the charging stop control instruction to the charging equipment through a data elastic sheet.
Further, the electronic device further includes: a temperature sensor;
the temperature sensor is arranged within a set distance of the charging socket, one end of the temperature sensor is connected with the main control chip, and the other end of the temperature sensor is grounded;
the main control chip is used for acquiring the current temperature of a charging port of the electronic equipment according to the temperature sensor.
The embodiment of the invention provides a charging system, which comprises the electronic equipment and charging equipment connected with the electronic equipment through a charging connector.
In another aspect, an embodiment of the present invention provides a method for controlling charging of an electronic device, where the electronic device is connected to a charging device through a charging connector, and is applied to a main control chip in the electronic device, and a charging unit is connected in series between a power spring in a charging socket of the electronic device and a battery, where the method includes:
acquiring a current first temperature of a charging port of the electronic equipment;
judging whether the current first temperature of the charging port is greater than a first set threshold value or not;
and when the current first temperature of the charging port is judged to be larger than a first set threshold value, sending a control instruction to the charging unit, and controlling the charging unit to stop supplying power to the battery.
Further, the electronic device further comprises: a load switch;
the load switch is connected between the power supply elastic sheet and the charging unit in series and is connected with the main control chip;
when the current first temperature of the charging port is judged to be larger than a first set threshold value, the method further comprises the following steps:
and sending a control instruction to the load switch to control the load switch to be switched off.
Further, the electronic device further comprises a logic switch;
the logic switch is connected in series between the grounding elastic sheet and the metal layer of the charging socket and is connected with the main control chip;
when the current first temperature of the charging port is judged to be larger than a first set threshold value, the method further comprises the following steps:
and sending a control instruction to the logic switch to control the logic switch to be switched off.
Further, the electronic device further includes a communication unit;
the communication unit is connected with the main control chip;
when the current first temperature of the charging port is judged to be larger than the set threshold, the method further comprises the following steps:
and sending a charging stop control instruction to the communication unit, so that the communication unit sends the charging stop control instruction to the charging equipment.
Further, the method further comprises:
acquiring a current second temperature of a charging port of the electronic equipment;
judging whether the second temperature is smaller than a second set threshold value;
if so, the charging device is notified to start charging.
Further, the electronic device further comprises: a temperature sensor, the temperature sensor is disposed within a set distance of the charging socket, and the acquiring a current temperature of the charging socket of the electronic device includes:
acquiring the voltage of the temperature sensor;
calculating the current resistance value of the temperature sensor according to the voltage;
and according to the stored corresponding relation between the resistance value and the temperature of the temperature sensor, taking the temperature corresponding to the current resistance value as the current temperature of the charging port.
The embodiment of the invention provides a charging control method, a charging system and electronic equipment, wherein the electronic equipment comprises: battery and charging socket, charging socket is provided with power shell fragment and ground connection shell fragment, and electronic equipment still includes: the charging unit is connected in series between the power spring and the battery and is connected with the main control chip, the temperature sensor is arranged in a set distance of the charging socket, the main control chip is used for acquiring a current first temperature of the charging socket of the electronic equipment, and when the first temperature is greater than a first set threshold value, the main control chip sends a control instruction to the charging unit to control the charging unit to stop supplying power to the battery. In the embodiment of the invention, when the main control chip judges that the acquired current temperature of the charging port is greater than the set threshold, the charging unit is controlled to stop supplying power to the battery, so that the current of a circuit including the charging unit is 0, and the equivalent resistance between the power supply elastic sheet and the grounding elastic sheet in the charging connector and the power supply elastic sheet and the grounding elastic sheet in the charging socket does not generate heat any more, therefore, the problem of burning of the charging port caused by the heat generation of the electronic equipment can be prevented, and the charging safety 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.
Fig. 1A is a schematic diagram of a charging environment of an electronic device according to the prior art;
FIG. 1B is a schematic diagram of an equivalent circuit model provided in the prior art;
fig. 2 is a schematic diagram of a connection structure of an electronic device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an electronic device connection structure according to a next embodiment of the invention;
fig. 4 is a schematic diagram of an electronic device connection structure according to another embodiment of the present invention;
fig. 5 is a schematic diagram of an electronic device connection structure according to another embodiment of the present invention;
fig. 6 is a schematic diagram of an electronic device connection structure according to still another embodiment of the invention;
fig. 7 is a schematic diagram illustrating a charging control process of an electronic device according to an embodiment of the present invention;
FIGS. 8A-8B are schematic diagrams of alternative leakage path equivalent models provided by the prior art;
fig. 9 is a schematic diagram of a charging control process of an electronic device according to another embodiment of the present invention.
Detailed Description
In order to prevent a charging port of an electronic device from being burnt and improve the charging safety of the electronic device, the embodiment of the invention provides a charging control method, a charging system and the electronic device.
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.
Fig. 2 is a schematic view of a connection structure of an electronic device according to an embodiment of the present invention, where the electronic device 11 includes: battery 111 and charging socket 112, wherein, charging socket is provided with power shell fragment 1123 and ground connection shell fragment 1124, electronic equipment still includes: a main control chip 113 and a charging unit 115.
The charging unit 115 is connected in series between the power spring 1123 and the battery 111, and is connected with the main control chip 113.
In the embodiment of the present invention, the charging unit 115 is connected in series between the power spring 1123 and the battery 111, and the charging unit 115 is connected to the main control chip 113, and the main control chip 113 may send a control instruction to the charging unit 115, where the control instruction may control the charging unit 115 to stop or continue to supply power to the battery 111, so as to control the disconnection or conduction of a circuit including the charging unit 115, the power spring 1123, and the battery 111.
The main control chip 113 is configured to obtain a current temperature of the charging port, determine whether the temperature is greater than a first set threshold, and if so, send a control instruction to the charging unit 115 to control the charging unit 115 to stop supplying power to the battery 111.
Specifically, the charging unit 115 may include a conventional charging chip and a charging circuit, during normal charging, the main control chip 113 sends a control instruction to the charging unit as a low ping value (time from sending a certain data packet to the server to receiving a server response packet), the charging unit operates normally, and when the main control chip 113 determines that the current temperature of the charging port is greater than a first set threshold, the main control chip 113 sends a control instruction to the charging unit as a high ping value signal, so that the charging unit stops supplying power to the battery 111.
Specifically, the main control chip 113 stores a first set threshold, where the first set threshold is a temperature value that ensures that the electronic device is not burned, and the first set thresholds stored in each type of electronic device may be the same or different. For example, for the electronic device, the corresponding first setting threshold may be selected according to the material of the charging socket of the electronic device.
When acquiring the current temperature of the charging port, the main control chip 113 may arrange a sensitive thermometer around the charging port, and when the temperature reaches a certain value, input the temperature value to the electronic device, and the electronic device acquires the input current temperature of the charging port.
After the main control chip 113 obtains the current temperature of the charging port, the current temperature of the charging port is compared with the first set threshold, and when the main control chip 113 obtains that the current temperature of the charging port is greater than the set threshold according to the temperature sensor 114, a control instruction is sent to the charging unit 115, where the control instruction is a high ping value signal, so that the charging unit 115 stops supplying power to the battery 111. When the main control chip 113 obtains that the current temperature of the charging port is not greater than the first set threshold value according to the temperature sensor 114, it may not send a control instruction to the charging unit 115, or send a control instruction to the charging unit 115 to control the charging unit 115 to continue supplying power to the battery, where the control instruction is a low ping value signal.
Because the charging unit 115 is connected in series between the power spring 1123 and the battery 111, and the charging unit 115 is connected with the main control chip 113, when the main control chip 113 determines that the current temperature of the charging port is greater than a first set threshold, the main control chip 113 sends a high ping value signal to the charging unit 115, so that the charging unit 115 stops supplying power to the battery 111, and further, a circuit including the charging unit 115, the power spring 1123 and the battery 111 is disconnected, so that the circuit current is 0, the electronic device charging port is prevented from being burnt, and the charging safety of the electronic device is improved.
On the basis of the above embodiments, in order to prevent the charging port from being burnt, a load switch 116 may be added to the electronic device, and fig. 3 is a schematic diagram of a connection structure of the electronic device according to another embodiment of the present invention;
the load switch 116 is connected in series between the power spring 1123 and the charging unit 115 and is connected with the main control chip 113;
the main control chip 113 is configured to send a control instruction to the load switch 116 to control the load switch 116 to be turned off when it is determined that the temperature is greater than the first set threshold.
After the main control chip 113 obtains the current temperature of the charging port, the current temperature of the charging port is compared with the first set threshold, and when the temperature is greater than the first set threshold, a control instruction is sent to the load switch 116 to control the load switch 116 to be switched off. When the main control chip 113 determines that the temperature is not greater than the first set threshold, it may not send a control instruction to the load switch 116, or send a control instruction to the load switch 116 to control the load switch 116 to continue to be turned on.
Because the load switch 116 is connected in series between the power spring 1123 and the charging unit 115, and the load switch 116 is connected with the main control chip 113, when the main control chip 113 determines that the current temperature of the charging port is greater than the first set threshold, the main control chip 113 sends a control instruction to the load switch 116 to control the load switch 116 to be disconnected, and further controls the disconnection of the circuit including the load switch 116, the power spring 1123 and the charging unit 115, so that the circuit current is 0, the electronic device charging port is prevented from being burnt, and the charging safety of the electronic device 11 is improved. After receiving the disconnection instruction sent by the main control chip 113, the load switch 116 can be disconnected in time, so that the protection capability of the charging port is stronger.
On the basis of the above embodiment, in order to accurately obtain the current temperature of the charging port, as shown in fig. 4, the electronic device 11 in the embodiment of the present invention further includes: a temperature sensor 114;
the temperature sensor 114 is arranged within a set distance of the charging socket 112, one end of the temperature sensor 114 is connected with the main control chip 113, and the other end is grounded;
the main control chip is used for acquiring the current temperature of the charging port according to the temperature sensor.
In an embodiment of the present invention, the temperature sensor 114 includes a negative temperature coefficient temperature-sensitive resistor NTC and a thermistor PTC. The temperature sensor 114 is disposed within a set distance of the charging inlet 112, specifically, the set distance is a distance at which the temperature sensor can measure the temperature of the charging port, and the temperature measured by the temperature sensor is the current temperature of the charging port itself. One end of the temperature sensor 114 is connected to the main control chip 113, and the other end is grounded. The temperature sensor 114 and the main control chip 113 form a loop, the voltage of the temperature sensor 114 changes correspondingly with the change of the temperature of the charging port, the main control chip 113 obtains the voltage of the temperature sensor 114, calculates the current resistance value of the temperature sensor according to the voltage, and takes the temperature corresponding to the current resistance value as the current temperature of the charging port according to the stored corresponding relationship between the resistance value of the temperature sensor and the temperature.
Fig. 5 is a schematic view of a connection structure of an electronic device according to another embodiment of the present invention, in which a metal layer 1121 is wrapped on an inner wall of a charging socket 112 of the electronic device 11, an insulating layer 1122 is laid on the metal layer 1121 on a bottom surface of the charging port, a power spring 1123 and a ground spring 1124 are laid on the insulating layer 1122, and the electronic device further includes: a logic switch 121;
the logic switch 121 is connected in series between the grounding elastic sheet 1124 and the metal layer 1121, and is connected with the main control chip 113;
the main control chip 113 is configured to send a control instruction to the logic switch 121 when it is determined that the temperature is greater than the first set threshold, and control the logic switch 121 to turn off.
Specifically, the logic switch 121 is connected in series between the grounding elastic sheet 1124 and the metal layer 1121, and is connected to the main control chip 113, the main control chip 113 stores a first set threshold, when the main control chip 113 obtains the current temperature of the charging port, the current temperature of the charging port is compared with the first set threshold, and when the main control chip 113 obtains that the current temperature of the charging port is greater than the first set threshold according to the temperature sensor 114, a control instruction is sent to the logic switch 121, so as to control the logic switch 121 to be turned off. When the current temperature of the charging port acquired by the temperature sensor 114 is not greater than the first set threshold, the main control chip 113 may not send a control instruction to the logic switch 121, or send a control instruction to the logic switch 121 to control the logic switch 121 to be continuously turned on.
When the current temperature of the charging port acquired by the temperature sensor 114 is greater than the set threshold value, the main control chip 113 sends a control instruction to the logic switch 121 to control the logic switch 121 to be turned off, so as to control the circuit including the logic switch 121, the grounding elastic sheet 1124 and the metal layer 1121 to be turned off, so that the circuit current is 0, the electronic device charging port is further prevented from being burnt, and the charging safety of the electronic device is improved.
Fig. 6 is a schematic diagram of a connection structure of an electronic device according to still another embodiment of the present invention, where the electronic device 11 further includes: a communication unit 131;
the communication unit 131 is connected with the main control chip 113;
the main control chip 113 is configured to send a charging stop control instruction to the communication unit 131 when it is determined that the temperature is greater than a first set threshold;
after receiving the charging stop control instruction sent by the main control chip 113, the communication unit 131 sends the charging stop control instruction to the charging device 22.
Specifically, as shown in fig. 6, the charging jack 112 of the electronic device 11 includes a power dome 1123, a ground dome 1124 and at least one data dome, 3 data domes are shown in fig. 6, the communication unit 131 is connected to the main control chip 113 and is connected to the at least one data dome, and the at least one data dome may include three data domes, which are a data dome D- (IO1)1125, a data dome D + (IO2)1126 and a data dome ID (IO3) 1127. The communication unit 131 is connected to the data dome D- (IO1)1125, the data dome D + (IO2)1126 and the data dome ID (IO3)1127, and the communication unit 131 sends the charging stop control command to the charging device 22 through the data dome D- (IO1)1125, the data dome D + (IO2)1126 and the data dome ID (IO3)1127, where the charging stop control command is a charging stop control command with a current of 0.
As shown in fig. 6, the charging socket 224 of the charging device 22 includes a power spring 2245, a grounding spring 2246 and at least one data spring, and the charging device 22 further includes a communication and power management unit 221, a power conversion unit 222 and a battery 223. The at least one data clip in the charging socket 224 may include three data clips, which are a data clip D- (IO1)2241, a data clip D + (IO2)2242, and a data clip ID (IO3) 2243. The charging device 22 may be charged by plugging a power plug into a conventional power socket, or the electronic device 11 may be charged by a battery 223 in the charging device. When the charging device 22 is plugged into a conventional power outlet through a power plug for charging, after receiving a charging stop control instruction, the communication and power management unit 221 controls the power conversion unit 222 to stop charging the electronic device, so that the current of a circuit including the communication and power management unit 221 and the power conversion unit 222 is 0; when the charging device 22 charges the electronic device 11 by the battery 223 in the charging device, the communication and power supply management unit 221, upon receiving the stop charging control instruction, controls the battery 223 to stop charging the electronic device so that the current of the circuit including the communication and power supply management unit 221 and the battery 223 becomes 0.
The electronic device and the charging device 22 are connected through a charging connector 33, two ends of the charging connector respectively contain a charging plug, the charging plugs are respectively a charging plug 331 and a charging plug 332, the charging plug 331 is connected with the charging socket 224 of the charging device 22, and the charging plug 332 is connected with the charging socket 112 of the electronic device 11. The charging stop control command is sent to the charging plug 332 of the charging connector 33 through the data dome D- (IO1)1125, the data dome D + (IO2)1126 and the data dome ID (IO3)1127 of the charging jack 112, sent to the charging plug 331 of the charging connector 33 through the charging connector 33 and sent to the charging device 22 through the charging plug 331, so that the communication and power management unit 221 controls the output of the current of the battery 223 in the power conversion unit 222 or the charging device 22 according to the charging stop control command.
After the communication and power management unit 221 receives the charging stop control command with the current of 0 through the data dome D- (IO1)2241, the data dome D + (IO2)2242 and the data dome ID (IO3)2243, the communication and power management unit 221 controls the power conversion unit 222 or the battery 223 in the charging device 22 to close the output of the current, so that the charging circuit is disconnected at the charging device 22, thereby further preventing the charging port of the electronic device from being burnt and improving the charging safety of the electronic device.
On the basis of the embodiments of the present invention, after the main control chip of the electronic device controls the charging device to stop charging, a prompt message may be displayed on the display screen of the electronic device, or a prompt sound may be sent out to notify the user that the current temperature is too high, so as to prompt the user to disconnect the charging connector between the electronic device and the charging device, thereby further ensuring the charging safety.
The embodiment of the invention provides a charging system, which comprises the electronic equipment and charging equipment connected with the electronic equipment through a charging connector.
Fig. 7 is a schematic view of a charging control process of an electronic device according to an embodiment of the present invention, where the electronic device is connected to a charging device through a charging connector, and a charging unit is connected in series between a power spring in a charging socket of the electronic device and the battery, where the process includes the following steps:
s701: the current first temperature of the charging port is obtained.
The main control chip can arrange a sensitive thermometer around the charging port when acquiring the current first temperature of the charging port, and when the temperature reaches a certain value, the temperature value is input to the electronic equipment, and the electronic equipment acquires the input current temperature of the charging port.
S702: and judging whether the current first temperature of the charging port is greater than a first set threshold value.
The main control chip stores a first set threshold, and when the main control chip obtains the current first temperature of the charging port, the current first temperature of the charging port is compared with the first set threshold. Specifically, the main control chip stores a first set threshold, where the first set threshold is a temperature value that ensures that the electronic device is not burned, and the first set thresholds stored in each type of electronic device may be the same or different. For example, for the electronic device, the corresponding first setting threshold may be selected according to the material of the charging socket of the electronic device.
S703: and when the current first temperature of the charging port is judged to be greater than a first set threshold value, sending a control instruction to the charging unit, and controlling the charging unit to stop supplying power to the battery.
When the main control chip acquires that the current first temperature of the charging port is greater than a first set threshold value according to the temperature sensor, a control instruction is sent to the charging unit, the control instruction is a high ping value signal, and the charging unit stops supplying power to the battery. When the main control chip acquires that the current first temperature of the charging port is not greater than a first set threshold value according to the temperature sensor, the main control chip may not send a control instruction to the charging unit, or send a control instruction to the charging unit to control the charging unit to continue to supply power to the battery, where the control instruction is a low ping value signal. . For example, the first set threshold of the main control chip is 60 degrees, when the main control chip obtains that the current first temperature of the charging port is 60 degrees according to the temperature sensor, the main control chip sends a high ping value signal to the charging unit to stop the charging unit from supplying power to the battery, and when the main control chip obtains that the current first temperature of the charging port is less than 60 degrees according to the temperature sensor, the main control chip may not send a control instruction to the charging unit, or send a control instruction to the charging unit to control the charging unit to continue supplying power to the battery, where the control instruction is a low ping value signal.
In the embodiment of the invention, when the main control chip judges that the acquired first temperature of the charging port is greater than the first set threshold, the charging unit is controlled to stop supplying power to the battery, so that the current of a circuit including the charging unit is 0, and equivalent resistors between the power supply elastic sheet and the grounding elastic sheet in the charging connector and between the power supply elastic sheet and the grounding elastic sheet in the charging socket do not generate heat any more, therefore, the charging port of the electronic equipment can be prevented from being burnt, and the charging safety of the electronic equipment is improved.
On the basis of the above embodiment, in order to prevent the charging port from being burnt, the electronic device in the embodiment of the present invention further includes: a load switch;
the load switch is connected between the power supply elastic sheet and the charging unit in series and is connected with the main control chip;
when the current first temperature of the charging port is judged to be larger than a first set threshold value, the method further comprises the following steps:
and sending a control instruction to the load switch to control the load switch to be switched off.
When the main control chip obtains the current first temperature of the charging port, the current first temperature of the charging port is compared with the first set threshold, and when the first temperature is higher than the first set threshold, a control instruction is sent to the load switch to control the load switch to be switched off. When the main control chip determines that the first temperature is not greater than the first set threshold, the main control chip may not send a control instruction to the load switch, or send a control instruction to the load switch to control the load switch to be continuously turned on.
Because the load switch is connected between the power supply elastic sheet and the charging unit in series and is connected with the main control chip, when the main control chip judges that the current first temperature of the charging port is greater than a first set threshold value, the main control chip sends a control instruction to the load switch to control the load switch to be disconnected, and then the disconnection of circuits including the load switch, the power supply elastic sheet and the charging unit is controlled, the circuit current is 0, the electronic equipment charging port is prevented from being burnt, and the charging safety of the electronic equipment is improved. After receiving a disconnection instruction sent by the main control chip, the load switch can be disconnected in time, so that the protection capability of the charging port is stronger.
On the basis of the above embodiment, in order to accurately obtain the current temperature of the charging port, the electronic device in the embodiment of the present invention further includes: a temperature sensor;
the temperature sensor is arranged within a set distance of the charging socket, one end of the temperature sensor is connected with the main control chip, and the other end of the temperature sensor is grounded;
the main control chip is used for acquiring the current first temperature of the charging port according to the temperature sensor.
The electronic equipment charging control method provided by the embodiment of the invention is applied to a main control chip in the electronic equipment. The main control chip acquires the current first temperature of the charging port according to the temperature sensor, and the temperature sensor comprises: the main control chip acquires the current voltage of the temperature sensor, calculates the current resistance value of the temperature sensor according to the voltage, and takes the temperature corresponding to the current resistance value as the current first temperature of the charging port according to the stored corresponding relation between the resistance value of the temperature sensor and the temperature.
The reason for burning the charging port of the electronic device may be that after the charging connector is inserted and pulled for many times or is squeezed by a foreign object, a sharp part at the tail end of the elastic sheet in the charging connector may gradually puncture the insulating material after the elastic sheet is squeezed, so that the elastic sheet contacts the metal layer of the charging jack to form a leakage path. An equivalent resistor is formed between a power supply elastic sheet and a metal layer of the charging connector, the equivalent resistor generates heat due to current in a leakage path, and the contact area between the elastic sheet in the charging connector and the metal layer of the charging socket is small, so that the heat dissipation is poor, and the equivalent resistor can quickly rise in temperature to burn the charging connector and materials near the charging socket of the electronic equipment.
In order to prevent the charging port of the electronic device from being burnt out due to the fact that the sharp end part of the tail end of the elastic sheet in the charging connector gradually punctures the insulating material after the elastic sheet is squeezed, on the basis of the embodiment, in another embodiment of the invention, the inner wall of the charging port of the electronic device is wrapped with the metal layer, the metal layer on the bottom surface of the charging port is coated with the insulating layer, the insulating layer is coated with the power elastic sheet and the grounding elastic sheet, and the electronic device further comprises: a logic switch;
the logic switch is connected between the grounding elastic sheet and the metal layer in series and is connected with the main control chip;
when the current temperature of the charging port is judged to be larger than a first set threshold value, the method further comprises the following steps:
and sending a control instruction to the logic switch to control the logic switch to be switched off.
The method comprises the steps that a first set threshold value is stored in a main control chip of the electronic equipment, and after the main control chip obtains a current first temperature of a charging port, the current first temperature of the charging port is compared with the first set threshold value. When the main control chip acquires that the current first temperature of the charging port is not greater than the first set threshold value according to the temperature sensor, the main control chip may not send the control instruction to the logic switch, or send the control instruction for controlling the logic switch to be continuously switched on to the logic switch.
In the embodiment of the invention, when the main control chip judges that the acquired current first temperature of the charging port is greater than the first set threshold, the logic switch is controlled to be switched off, so that the current of a circuit including the logic switch is 0, and the equivalent resistance between the power supply elastic sheet and the metal layer of the charging connector does not generate heat any more, therefore, the problem of burning of the charging port of the electronic equipment caused by the fact that a leakage path is formed by gradually puncturing an insulating material after the sharp part at the tail end of the elastic sheet in the charging connector is extruded can be prevented, and the charging safety of the electronic equipment is improved.
The reason for causing the burning of the charging port of the electronic device may also be that a conductive foreign object is introduced between the power spring piece and the grounding spring piece of the charging connector plug, or a conductive foreign object is introduced between the power spring piece and the grounding spring piece of the charging jack, the introduced conductive foreign object is equivalent to a resistor connected between the power spring piece and the grounding spring piece, so that a leakage circuit is formed between the power spring piece and the grounding spring piece of the charging jack, and a leakage path is shown in fig. 8A-8B.
In order to prevent the electronic equipment charging port from being burnt due to a leakage circuit formed among a power supply elastic sheet and a grounding elastic sheet of a charging connector plug and a power supply elastic sheet and a grounding elastic sheet of a charging socket, on the basis of the embodiment, the electronic equipment further comprises a communication unit in a further embodiment of the invention;
the communication unit is connected with the main control chip;
when the current first temperature of the charging port is judged to be larger than a first set threshold value, the method further comprises the following steps:
and sending a charging stop control instruction to a communication unit, so that the communication unit sends the charging stop control instruction to the charging equipment.
The method comprises the steps that a first set threshold value is stored in a main control chip of the electronic equipment, and after the main control chip obtains a current first temperature of a charging port, the current first temperature of the charging port is compared with the first set threshold value. When the main control chip acquires that the current first temperature of the charging port is greater than a first set threshold value according to the temperature sensor, a control instruction is sent to the communication unit, and the communication unit sends the charging stopping control instruction to the charging equipment.
At least one data elastic sheet is laid on the insulating layer of the charging socket in the electronic equipment, the communication unit is connected with the at least one data elastic sheet, and the communication unit sends the charging stop control command to the charging equipment through the data elastic sheet. For example, three data clips, namely a data clip D- (IO1), a data clip D + (IO2) and a data clip ID (IO3), are laid on the insulating layer, and the communication unit sends the charging stop control command to the charging device through the data clip D- (IO1), the data clip D + (IO2) and the data clip ID (IO 3).
The charging device is characterized in that a charging socket of the charging device corresponds to a data shrapnel D- (IO1), a data shrapnel D + (IO2) and a data shrapnel ID (IO3), a charging stopping control command sent by a communication unit in the electronic device is sent to a charging and power supply management unit through the data shrapnel, and the charging and power supply management unit controls a power supply conversion unit to close current output, so that a charging circuit is disconnected at the charging device. The electronic equipment charging port is effectively prevented from being burnt, and the charging safety of the electronic equipment is improved.
When the electronic device stops being charged and the temperature of a charging socket of the electronic device drops, in order to charge the electronic device, the method further comprises the following steps:
acquiring a current second temperature of the charging port;
judging whether the second temperature is smaller than a second set threshold value;
if so, the charging device is notified to start charging.
The main control chip stores a second set threshold value, the second set threshold value is a temperature value for ensuring that the electronic equipment is recharged after the temperature of a charging port of the electronic equipment is reduced, and the second set threshold value stored by each type of electronic equipment can be the same or different. For example, for the electronic device, the corresponding second setting threshold may be selected according to the material of the charging socket of the electronic device.
And when the current second temperature of the charging port acquired by the main control chip is less than a second set threshold, informing the charging equipment to start charging. The first set threshold and the second set threshold may be the same, but the second set threshold may be generally set to a value smaller than the first set threshold.
Fig. 9 is a detailed charging control process of an electronic device according to an embodiment of the present invention, where the process includes the following steps:
s901: the current first temperature of the charging port is obtained.
S902: and judging whether the current first temperature of the charging port is greater than a first set threshold value.
S903: and when the current first temperature of the charging port is greater than a first set threshold value, sending a control instruction to the charging unit, and controlling the charging unit to stop supplying power to the battery.
When the main control chip judges that the current first temperature of the charging port is greater than a first set threshold value, a control instruction is sent to the charging unit, the control instruction is a high ping value signal, and the charging unit is controlled to stop supplying power to the battery, so that a circuit comprising the charging unit, a power supply elastic sheet and the battery is disconnected, and the circuit current is 0; or sending a disconnection instruction to the logic switch to disconnect the logic switch, so that a circuit comprising the logic switch and the grounding elastic sheet is disconnected, and the current of the circuit is 0; or sending a charging stopping control instruction to a communication unit, enabling the communication unit to send the charging stopping control instruction to the charging equipment, and enabling the charging equipment to stop charging the electronic equipment; or a control instruction can be sent to the load switch to control the load switch to be switched off.
S904: and acquiring the current second temperature of the charging port.
S905: and judging whether the second temperature is less than a second set threshold value.
S906: and when the current second temperature of the charging port is lower than a second set threshold value, sending a control instruction to the charging unit, and controlling the charging unit to continuously supply power to the battery.
When the main control chip judges that the current second temperature of the charging port is smaller than a second set threshold value, a low ping value signal is sent to the charging unit, so that the charging unit works normally, and the charging equipment can continue to charge the electronic equipment; if the logic switch is disconnected, a closing instruction can be sent to the logic switch at the moment to close the logic switch, so that a circuit comprising the logic switch and the grounding elastic sheet is closed, and the charging equipment can continuously charge the electronic equipment; or sending a charging starting control instruction to a communication unit, so that the communication unit sends the charging starting control instruction to the charging equipment, and the charging equipment can continue to charge the electronic equipment; if the load switch is opened before, a closing instruction can be sent to the load switch at the moment to close the load switch.
The embodiment of the invention discloses a charging control method, a charging system and electronic equipment, which are used for preventing a charging port of the electronic equipment from being burnt and improving the charging safety of the electronic equipment. The electronic device includes: battery and charging socket, charging socket are provided with power shell fragment and ground connection shell fragment, and electronic equipment still includes: the charging unit is connected in series between the power supply elastic sheet and the battery and is connected with the main control chip, the temperature sensor is arranged in a set distance of the charging socket, the main control chip is used for acquiring the current temperature of the charging socket, and when the temperature is greater than a first set threshold value, a control instruction is sent to the charging unit to control the charging unit to stop supplying power to the battery. In the embodiment of the invention, when the main control chip judges that the acquired current temperature of the charging port is greater than the set threshold, the charging unit is controlled to stop supplying power to the battery, so that the current of a path including the charging unit is 0, and the equivalent resistance between the power supply elastic sheet and the grounding elastic sheet in the charging connector and the power supply elastic sheet and the grounding elastic sheet in the charging socket does not generate heat any more, therefore, the problem of burning of the charging port caused by the heat generation of the electronic equipment can be prevented, and the charging safety of the electronic equipment is improved.
For the system/apparatus embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference may be made to some descriptions of the method embodiments for relevant points.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (14)
1. An electronic device, the electronic device comprising: battery and charging socket, charging socket is provided with power shell fragment and ground connection shell fragment, its characterized in that, electronic equipment still includes: the main control chip and the charging unit; wherein,
the charging unit is connected in series between the power supply elastic sheet and the battery and is connected with the main control chip;
the main control chip is used for obtaining the current temperature of a charging port of the electronic equipment, judging whether the temperature is greater than a first set threshold value, if so, sending a control instruction to the charging unit, and controlling the charging unit to stop supplying power to the battery.
2. The electronic device of claim 1, further comprising: a load switch;
the load switch is connected in series between the power supply elastic sheet and the charging unit and is connected with the main control chip;
and the main control chip is used for sending a control instruction to the load switch to control the load switch to be switched off when judging that the temperature is greater than a first set threshold value.
3. The electronic device of claim 1, wherein a metal layer is wrapped on an inner wall of the charging socket of the electronic device, an insulating layer is laid on the metal layer on the bottom surface of the charging socket, a power spring and a ground spring are laid on the insulating layer, and the electronic device further comprises a logic switch;
the logic switch is connected between the grounding elastic sheet and the metal layer in series and is connected with the main control chip;
and the main control chip is used for sending a control instruction to the logic switch to control the logic switch to be switched off when judging that the temperature is greater than a first set threshold value.
4. The electronic device according to claim 1, characterized in that the electronic device further comprises a communication unit;
the communication unit is connected with the main control chip;
the main control chip is used for sending a charging stopping control instruction to the communication unit when the temperature is judged to be greater than a first set threshold value;
and after receiving the charging stop control instruction sent by the main control chip, the communication unit sends the charging stop control instruction to the charging equipment.
5. The electronic device of claim 4, wherein the main control chip is configured to send a charging stop control command with a current of 0 to the communication unit when determining that the temperature is greater than a first set threshold.
6. The electronic device of claim 4, wherein at least one data spring is further disposed on the insulating layer of the charging jack;
the communication unit is connected with the at least one data elastic sheet, and the data elastic sheet is used for being connected with a data line in the charging connector;
and the communication unit sends the charging stop control instruction to the charging equipment through a data elastic sheet.
7. The electronic device of any of claims 1-4, further comprising: a temperature sensor;
the temperature sensor is arranged within a set distance of the charging socket, one end of the temperature sensor is connected with the main control chip, and the other end of the temperature sensor is grounded;
the main control chip is used for acquiring the current temperature of a charging port of the electronic equipment according to the temperature sensor.
8. A charging system comprising an electronic device according to any one of claims 1 to 7, and a charging device connected to the electronic device via a charging connector.
9. A charging control method of electronic equipment is characterized in that a charging unit is connected in series between a power supply elastic sheet and a battery in a charging socket of the electronic equipment, and the method comprises the following steps:
acquiring a current first temperature of a charging port of the electronic equipment;
judging whether the current first temperature of the charging port is greater than a first set threshold value or not;
and when the current first temperature of the charging port is judged to be larger than a first set threshold value, sending a control instruction to the charging unit, and controlling the charging unit to stop supplying power to the battery.
10. The method of claim 9, further comprising, in the electronic device: a load switch;
the load switch is connected between the power supply elastic sheet and the charging unit in series and is connected with the main control chip;
when the current first temperature of the charging port is judged to be larger than a first set threshold value, the method further comprises the following steps:
and sending a control instruction to the load switch to control the load switch to be switched off.
11. The method of claim 9, further comprising a logic switch in the electronic device;
the logic switch is connected in series between the grounding elastic sheet and the metal layer of the charging socket and is connected with the main control chip;
when the current first temperature of the charging port is judged to be larger than a first set threshold value, the method further comprises the following steps:
and sending a control instruction to the logic switch to control the logic switch to be switched off.
12. The method of claim 9, wherein the electronic device further comprises a communication unit;
the communication unit is connected with the main control chip;
when the current first temperature of the charging port is judged to be larger than the set threshold, the method further comprises the following steps:
and sending a charging stop control instruction to the communication unit, so that the communication unit sends the charging stop control instruction to the charging equipment.
13. The method of claim 9, further comprising:
acquiring a current second temperature of a charging port of the electronic equipment;
judging whether the second temperature is smaller than a second set threshold value;
if so, the charging device is notified to start charging.
14. The method according to any one of claims 9-13, further comprising, in the electronic device: the temperature sensor is arranged in the set distance of the charging socket, and the acquiring of the current temperature of the charging socket of the electronic equipment comprises the following steps:
acquiring the voltage of the temperature sensor;
calculating the current resistance value of the temperature sensor according to the voltage;
and according to the stored corresponding relation between the resistance value and the temperature of the temperature sensor, taking the temperature corresponding to the current resistance value as the current temperature of the charging port.
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| CN201610740097.9A CN106130141A (en) | 2016-08-26 | 2016-08-26 | A kind of charge control method, charging system and electronic equipment |
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