CN113394841A - Charging circuit, electronic device and charging system - Google Patents

Charging circuit, electronic device and charging system Download PDF

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Publication number
CN113394841A
CN113394841A CN202110615952.4A CN202110615952A CN113394841A CN 113394841 A CN113394841 A CN 113394841A CN 202110615952 A CN202110615952 A CN 202110615952A CN 113394841 A CN113394841 A CN 113394841A
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China
Prior art keywords
charging
signal
module
voltage
current
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Pending
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CN202110615952.4A
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Chinese (zh)
Inventor
潘晓佳
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to CN202110615952.4A priority Critical patent/CN113394841A/en
Publication of CN113394841A publication Critical patent/CN113394841A/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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • 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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00045—Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
    • 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
    • H02J7/00304—Overcurrent 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00308—Overvoltage 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits

Abstract

The utility model relates to a charging circuit, electronic equipment and charging system, including first interface, battery cell and the first module of charging, first interface that charges is used for receiving the first check-up signal and the signal of charging that power adapter sent, first module of charging is used for receiving first check-up signal and carries out conversion treatment to first check-up signal in order to output the second check-up signal, the second check-up signal is used for instructing the treater to feed back first instruction of charging, first module of charging still is used for carrying out conversion treatment to first instruction of charging in order to output the second instruction of charging, the second instruction of charging is used for instructing power adapter to output the signal of charging, first module of charging still is used for obtaining the target signal of charging and exports to battery cell after carrying out conversion treatment to the signal of charging of inputing. Therefore, the signal interaction between the charging circuit and the power adapter and the charging function of the battery unit are achieved through the first charging module and the first charging interface, the circuit is simple, the number of the interactive modules is small, and the improvement of the reliability of the circuit interaction is facilitated.

Description

Charging circuit, electronic device and charging system
Technical Field
The present application relates to the field of charging technologies, and in particular, to a charging circuit, an electronic device, and a charging system.
Background
With the rapid development of electronic consumer products, terminal products such as mobile phones and tablet computers are more and more favored by consumers, but the power consumption of the terminal products is large, and frequent charging is required. However, in the conventional charging circuit, the number of circuit modules required for the end product is large, and the circuit is complicated.
Disclosure of Invention
The embodiment of the application provides a charging circuit, electronic equipment and a charging system, and circuit modules are few.
A charging circuit, comprising:
a battery cell;
the first charging interface is used for being connected with a power adapter and receiving a first verification signal and a charging signal sent by the power adapter;
the first charging module is configured with a first data end, a second data end, a first charging end and a second charging end, the first data end and the first charging end are respectively connected with the first charging interface, the second data end is used for being connected with the processor, and the second charging end is connected with the battery unit;
the first charging module is configured to receive the first check signal and convert the first check signal to output a second check signal, where the second check signal is used to instruct the processor to feed back a first charging instruction, the first charging module is further configured to receive the first charging instruction, convert the first charging instruction to output a second charging instruction, and the second charging instruction is used to instruct the power adapter to output the charging signal;
the first charging module is further configured to convert the input charging signal to obtain a target charging signal and output the target charging signal to the battery unit.
An electronic device, comprising:
the charging circuit as described above; and
the processor is configured to obtain the second check signal, generate a first charging instruction according to the second check signal, and output the first charging instruction to the first charging module.
A charging system, comprising:
an electronic device as described above; and
a power adapter.
The charging circuit, the electronic device and the charging system comprise a first charging interface, a battery unit and a first charging module, wherein the first charging interface is used for receiving a first check signal and a charging signal sent by a power adapter, the first charging module is used for receiving the first check signal and converting the first check signal to output a second check signal, the second check signal is used for indicating a processor to feed back a first charging instruction, the first charging module is also used for converting the first charging instruction to output a second charging instruction, the second charging instruction is used for indicating the power adapter to output the charging signal, and the first charging module is also used for converting the input charging signal to obtain a target charging signal and outputting the target charging signal to the battery unit. Therefore, the signal interaction between the charging circuit and the power adapter and the charging function of the battery unit can be realized through the first charging module and the first charging interface, the circuit is simplified, and the interaction is simple, so that the cooperative error of a plurality of related modules is avoided, and the reliability of the circuit interaction is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application 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 application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of a charging circuit according to an embodiment;
FIG. 2 is a block diagram of a charging circuit according to an embodiment;
FIG. 3 is a block diagram of a charging circuit according to an embodiment;
FIG. 4 is a block diagram of a charging circuit according to an embodiment;
FIG. 5 is a block diagram of a charging circuit according to an embodiment;
FIG. 6 is a block diagram of a charging circuit according to an embodiment;
FIG. 7 is a block diagram of a first charging module according to an embodiment;
FIG. 8 is a block diagram of an electronic device in one embodiment;
fig. 9 is a block diagram of a charging system according to an embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element, and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Fig. 1 is a block diagram of a charging circuit in one embodiment. As shown in fig. 1, the charging circuit 10 includes a first charging interface 110, a first charging module 120, and a battery unit 130.
In this embodiment, the battery unit 130 may be disposed in a device to be charged, and the device to be charged may be an electronic device having the battery unit 130, such as a mobile power supply (charger, travel charger), an in-vehicle charger, or an electronic device having the battery unit 130, such as a mobile phone, a tablet computer, and a wearable device.
The battery type of the battery unit 130 may include at least one of a lead-acid battery, a nickel-metal hydride battery, a sodium-sulfur battery, a flow battery, an ultracapacitor, a lithium battery, and a flexible battery. The battery unit 130 may include 1, 2, 3 or more cells, and if the number of the cells is multiple, the multiple cells are connected in series.
In this embodiment, the first charging interface 110 is configured to be connected to the power adapter 20 and receive the first verification signal and the charging signal sent by the power adapter 20.
The power adapter 20 includes a second charging interface 210, and the first and second charging interfaces 110 and 210 may transmit the first verification signal and the charging signal through a cable, for example, the first verification signal and the charging signal may be transmitted through a USB cable. In one embodiment, as shown in fig. 2, the first charging interface 110 includes a first data terminal D +, a second data terminal D-, a power terminal Vbus, and a ground terminal GND. The second charging interface comprises a first data terminal D +, a second data terminal D-, a power supply terminal Vbus and a ground terminal GND. When the first charging interface 110 is connected with the power adapter 20, the first data end D + of the first charging interface 110 is connected with the first data end D + of the second charging interface, and the second data end D-of the first charging interface 110 is connected with the second data end D-of the second charging interface, so that transmission of a first verification signal is realized; the power supply terminal Vbus of the first charging interface 110 is connected with the power supply terminal Vbus of the second charging interface, so that transmission of charging signals is realized; the ground terminal GND of the first charging interface 110 and the ground terminal GND of the second charging interface are grounded.
The first verification signal is output by the power adapter 20 and is used to instruct the processor 30 to feed back the first charging instruction, so that the power adapter 20 outputs a charging signal suitable for charging the battery unit 130 according to the first charging instruction. The charging signal may be a charging current signal or a charging voltage signal.
After electrically connected to the first charging interface 110, the power adapter 20 can perform fast charging and/or normal charging on the battery unit 130, specifically, the charging speed of the fast charging is higher than that of the normal charging. In an embodiment, the first check signal may also be used to instruct the processor 30 to feed back the protocol type, so that the power adapter 20 performs fast charging or normal charging according to the protocol type, wherein the fast charging may output a charging signal with high current or high voltage. In one embodiment, the power adapter 20 may be configured to connect to an external power source, convert a power signal (e.g., ac power) provided by the external power source into a dc signal according to the second charging instruction, and perform voltage drop processing on the dc signal to output a charging signal suitable for charging the battery unit 130. Further, the power adapter 20 may adjust the output charging signal in real time according to the second charging instruction.
In the embodiment, the first charging module 120 is configured with a first data terminal D1, a second data terminal D2, a first charging terminal C1 and a second charging terminal C2, the first data terminal D1 and the first charging terminal C1 are respectively connected to the first charging interface 110, the second data terminal D2 is used for being connected to the processor 30, and the second charging terminal C2 is connected to the battery unit 130. In an embodiment, the number of the first data terminal D1 is two, and the two terminals are respectively connected to the first data terminal D + and the second data terminal D-of the first charging interface 110, the first charging terminal C1 is connected to the power terminal Vbus of the first charging interface 110, and the second charging terminal C2 is connected to the battery unit 130.
The first charging module 120 is configured to receive the first check signal and convert the first check signal to output a second check signal, where the second check signal is used to instruct the processor 30 to feed back the first charging instruction, the first charging module 120 is further configured to receive the first charging instruction, convert the first charging instruction to output a second charging instruction, and the second charging instruction is used to instruct the power adapter 20 to output a charging signal; the first charging module 120 is further configured to perform conversion processing on the input charging signal to obtain a target charging signal, and output the target charging signal to the battery unit 130.
The second check signal is obtained after the first check signal is converted, and is used for instructing the processor 30 to feed back the first charging instruction, so that the power adapter 20 outputs a charging signal suitable for charging the battery unit 130 according to the first charging instruction. Through the conversion process of the first verification signal by the first charging module 120, data suitable for being acquired by the processor 30 can be obtained. In one embodiment, the first check signal may be a level signal, the second check signal may be a digital signal, and the converting the first check signal may be converting the level signal into the digital signal, for example, into a digital signal of 16-ary code for being acquired by the processor 30.
The first charging instruction is generated by the processor 30, and is used to instruct the power adapter 20 to output a charging signal suitable for charging the battery unit 130, and also used to instruct the power adapter 20 to stop outputting the charging signal. The second charging instruction is a signal instruction obtained after the first charging instruction is converted. The data suitable for the power adapter 20 to acquire can be obtained through the conversion processing of the first charging instruction by the first charging module 120. In one embodiment, the first charging command may be an encrypted data signal, the second charging command may be a decoded level signal, and the conversion process of the first charging command may be to decode the encrypted data signal while converting the decoded data signal into the level signal to be transmitted to the power adapter 20.
The charging signal is a voltage signal or a current signal suitable for charging the battery unit 130, and the target charging signal is a target voltage signal or a target current signal obtained by converting the charging signal. In one embodiment, the conversion process between the charging signal and the target charging signal is a power conversion process, which converts the charging power with the voltage U and the current I corresponding to the charging signal into the charging power with the voltage U/2 and the current 2 × I corresponding to the target charging signal. For example, the charging signal is a high-voltage low-current signal, the target charging signal is a low-voltage high-current signal, the conversion process may be a step-down process or a step-up process, and the high-voltage low-current charging signal is converted to obtain the target charging signal of low-voltage high-current, which is beneficial to reducing heat generation of an input path while ensuring that the charging signal is suitable for charging the battery unit 130, thereby reducing loss of the charging circuit 10 and improving charging efficiency.
In some embodiments, the first charging module 120 is further configured with a detection terminal, the detection terminal is connected to the battery unit 130, and the first charging module 120 is further configured to obtain the state parameter of the battery unit 130 and output the state parameter to the processor 30, so that the processor 30 adjusts the first charging instruction according to the state parameter, and accordingly, the second charging instruction is correspondingly adjusted, so that the power adapter 20 dynamically adjusts the output charging signal. The state parameters may include parameter information such as voltage, electric quantity, and temperature of the battery chip.
The charging circuit 10 provided in this embodiment includes a first charging interface 110, a battery unit 130, and a first charging module 120, where the first charging interface 110 is configured to receive a first check signal and a charging signal sent by a power adapter 20, the first charging module 120 is configured to receive the first check signal and perform conversion processing on the first check signal to output a second check signal, the second check signal is used to instruct a processor 30 to feed back a first charging instruction, the first charging module 120 is further configured to perform conversion processing on the first charging instruction to output a second charging instruction, the second charging instruction is used to instruct the power adapter 20 to output a charging signal, and the first charging module 120 is further configured to perform conversion processing on an input charging signal to obtain a target charging signal and output the target charging signal to the battery unit 130. Therefore, the signal interaction between the charging circuit 10 and the power adapter 20 and the charging function to the battery unit 130 can be realized through the first charging module 120 and the first charging interface 110, the circuit is simplified, and the interaction is simple, so that the cooperative error of a plurality of related modules is avoided, and the reliability of the circuit interaction is improved.
Fig. 3 is a block diagram of a charging circuit in one embodiment. As shown in fig. 3, the charging circuit 10 includes a first charging interface 110, a first charging module 120, a battery unit 130 and a second charging module 140. The first charging interface 110, the battery unit 130 and the first charging module 120 refer to the related descriptions in the above embodiments, and are not described herein again.
In the present embodiment, the second charging module 140 is configured with a third charging terminal and a fourth charging terminal, the third charging terminal and the first charging terminal are connected to the first charging interface 110 in common, the fourth charging terminal and the second charging terminal are connected to the battery unit 130 in common, and the second charging module 140 is configured to perform a conversion process on the input charging signal to output the target charging signal to the battery unit 130 in cooperation with the first charging module 120.
The third charging terminal and the first charging terminal are connected to the first charging interface 110, the fourth charging terminal and the second charging terminal are connected to the battery unit 130, the first charging module 120 and the second charging module 140 are arranged in parallel, the first charging module 120 and the second charging module 140 connected in parallel can disperse current signals in the charging signals output by the power adapter 20, the input currents branched by the first charging module 120 and the second charging module 140 are I/2, the first charging module 120 and the second charging module 140 can disperse heat, local overheating of the charging circuit 10 is avoided, and charging efficiency is improved.
In an embodiment, the conversion processing of the charging signal input by the input path by the second charging module 140 and the first charging module 120 is power conversion processing. For example, the second charging module 140 converts the charging power with the voltage U and the current I/2 input by the input path into the charging power with the voltage U/2 and the current 2 × I/2, and the first charging module 120 converts the charging power with the voltage U and the current I/2 input by the input path into the charging power with the voltage U/2 and the current 2 × I/2, so that the first charging module 120 and the second charging module 140 realize the average distribution of the high power and reduce the loss of the input path; and the output power of the first charging module 120 and the output power of the second charging module 140 are combined and output to the battery unit 130 to charge the battery unit 130, so that the first charging module 120 and the second charging module 140 supply power to the battery unit 130 at high power.
In some embodiments, the charging signal includes a first branch signal and a second branch signal, and the first charging module 120 is further configured to adjust a first voltage of the first branch signal to a second voltage and adjust a first current of the first branch signal to a second current, where the first voltage is n times the second voltage and the second current is n times the first current; the second charging module 140 is further configured to adjust a third voltage of the second branch signal to a fourth voltage, and adjust a third current of the second branch signal to a fourth current, where the third voltage is n times of the fourth voltage, and the fourth current is n times of the third current; wherein n is a positive integer. For example, n may be 2 times, 3 times, or 4 times. Therefore, the second charging module 140 converts the charging power with the voltage U and the current I/2 input by the input path into the charging power with the voltage U/n and the current 2n × I/2, the first charging module 120 converts the charging power with the voltage U and the current I/2 input by the input path into the charging power with the voltage U/n and the current 2n × I/2, and the high-power charging is realized through a proper conversion multiple n.
In some embodiments, the number of the second charging modules 140 is multiple, and multiple second charging modules 140 are arranged in parallel. Taking N first charging modules 120 and N second charging modules 140, for example, the conversion multiple is N, the input voltage of the first charging module 120 is U, the current is I/N, the input voltage of each second charging module 140 is U, the current is I/N, the output voltage of the first charging module 120 is U/N, the current is N I/N, the output voltage of each second charging module 140 is U/N, and the current is N I/N, thereby realizing the average distribution of the high power at the input end and reducing the loss of the input path; and the output power of the first charging module 120 and the output power of the plurality of second charging modules 140 connected in parallel are combined and output to the battery unit 130 to charge the battery unit 130, so that high-power supply of the output end is realized.
In some embodiments, the first charging module 120 is further configured with a control terminal, and the first charging module 120 is further configured to generate a cut-off control signal when detecting that the charging signal satisfies a preset condition; as shown in fig. 4 (the first charging interface 110 is not shown in fig. 4, J is a detection terminal of the first charging module 120, and K is a control terminal), the charging circuit 10 further includes a first protection module 150.
The first end of the first protection module 150 is connected to the first charging interface 110, the second end of the first protection module 150 is connected to the first charging end and the third charging end, the controlled end of the first protection module 150 is connected to the control end, and the first protection module 150 is configured to cut off a first charging path between the first charging interface 110 and the first charging module 120 and a second charging path between the first charging interface 110 and the second charging module 140 according to the cut-off control signal.
The preset condition may be set according to an actual situation, for example, when the charging signal is a voltage signal, a voltage threshold may be set, and the preset condition is that the voltage value of the voltage signal is greater than the voltage threshold.
The cut-off control signal may be a voltage signal or a current signal, and the cut-off control signal may enable the first protection module 150 to cut off the first charging path and the second charging path, so that the first charging module 120 and the first protection module 150 may protect each module of the charging circuit 10 in real time, and the service life of the charging circuit 10 may be prolonged.
Alternatively, the first protection module 150 may be an overvoltage protection device, and the preset condition is that the voltage value of the charging signal is greater than a preset threshold, that is, when the voltage value output by the power adapter 20 is greater than the preset threshold, the first charging module 120 generates a cut-off control signal and sends the cut-off control signal to the controlled terminal of the first protection module 150, so that the first protection module 150 cuts off a first charging path between the first charging interface 110 and the first charging module 120 and cuts off a second charging path between the first charging interface 110 and the second charging module 140 according to the cut-off control signal, so as to prevent each of the first charging path and the second charging path from being damaged due to overvoltage. In other embodiments, the first protection module 150 may also be a normally closed switch component, and generate a cut-off control signal to control the normally closed switch component to be turned off when the first charging module 120 detects that the charging signal satisfies the preset condition, so as to cut off the first charging path and the second charging path.
The charging circuit 10 provided in this embodiment includes a first charging interface 110, a battery unit 130, a first charging module 120, a second charging module 140, and a first protection module 150, where the first charging interface 110 is configured to receive a first verification signal and a charging signal sent by a power adapter 20; the first charging module 120 is configured to receive the first check signal and perform conversion processing on the first check signal to output a second check signal, further configured to perform conversion processing on the first charging instruction to output a second charging instruction, further configured to output a target charging signal to the battery unit 130 under the cooperation of the first charging instruction and the second charging module 140, and further configured to generate a cut-off control signal to control the first protection module 150 to cut off the first charging path and the second charging path when detecting that the charging signal satisfies a preset condition. Therefore, the first charging module 120 and the second charging module 140 can realize the signal interaction between the charging circuit 10 and the power adapter 20 and the charging function for the battery unit 130, thereby simplifying the circuit, and being beneficial to improving the reliability of circuit interaction because the interaction is simple and the cooperation error of a plurality of related modules is avoided; the first charging module 120 and the first protection module 150 can implement overvoltage protection or overcurrent protection on each module of the charging circuit 10, thereby improving the service life of the charging circuit 10.
Fig. 5 is a block diagram of the charging circuit 10 according to an embodiment. As shown in fig. 5, the charging circuit 10 includes a first charging interface 110, a battery unit 130, a first charging module 120, and a third charging module 160. For the first charging interface 110, the battery unit 130, and the first charging module 120, reference is made to the related descriptions of the first charging interface 110, the battery unit 130, and the first charging module 120 in the above embodiments, and details are not repeated herein.
In this embodiment, the third charging module 160 is connected between the first charging module 120 and the battery unit 130, and is configured to perform conversion processing on the charging signal converted by the first charging module 120 to obtain a target charging signal and output the target charging signal to the battery unit 130.
The third charging module 160 is connected between the first charging module 120 and the battery unit 130, so that the first charging module 120 and the third charging module 160 are connected in series, and the first charging module 120 and the third charging module 160 which are connected in series can increase the number of times of conversion processing of charging signals, so that the conversion multiple of voltage or current of the charging signals is increased according to actual requirements, higher-voltage charging is realized, and the charging efficiency and the charging speed are improved.
In some embodiments, the first charging module 120 is further configured to adjust a fifth voltage of the charging signal to a sixth voltage and adjust a fifth current of the charging signal to a sixth current, where the fifth voltage is n times of the sixth voltage and the fifth current is n times of the sixth current; the third charging module 160 is further configured to adjust the sixth voltage to a seventh voltage, and adjust the sixth current to a seventh current, where the sixth voltage is n times of the seventh voltage, and the seventh current is n times of the sixth current; wherein n is a positive integer. For example, n may be 2 times, 3 times, or 4 times. Thereby, chargingThe signal can be converted from the voltage U to U/n and the current I to n x I after being converted by the first charging module 120, and can be converted from the voltage U/n to U/n after being converted by the third charging module 1602The current being I converted to n2I, so that by a suitable conversion factor, a high voltage charging is achieved. For example, taking n-3 as an example, when the target charging signal of the battery unit 130 is 4V, the charging signal may be 36V, so that the power adapter 20 may implement high-voltage charging of 36V, thereby improving charging efficiency and charging speed.
In some embodiments, the number of the third charging modules 160 is plural, and the plural third charging modules 160 are arranged in series. Taking N first charging modules 120 and N third charging modules 160 and N conversion multiples as an example, the output terminal voltage of the first charging module 120 is U/N, the current is N × I, and the input voltage of the adjacent first third charging module 160 is U/N2Current is n2I, the input voltage of the second and third charging modules 160 is U/n3Current is n3I, … …, the input voltage of the (N-1) th third charging module 160 is U/N(N-1)Current is n(N-1)I to realize the high voltage charging of input, promote charge efficiency and charging speed.
In some embodiments, the first charging module 120 is further configured with a control terminal, and the first charging module 120 is further configured to generate a cut-off control signal when detecting that the charging signal satisfies a preset condition; as shown in fig. 6 (the first charging interface 110 is not shown in fig. 6, J is a detection terminal of the first charging module 120, and K is a control terminal), the charging circuit 10 further includes a second protection module 170.
The first end of the second protection module 170 is connected to the first charging interface 110, the second end of the second protection module 170 is connected to the first charging end, the controlled end of the second protection module 170 is connected to the control end, and the second protection module is configured to cut off the third charging path between the first charging interface 110 and the first charging module 120 according to the cut-off control signal.
The preset condition may be set according to an actual situation, for example, when the charging signal is a voltage signal, a voltage threshold may be set, and the preset condition is that the voltage value of the voltage signal is greater than the voltage threshold.
The cut-off control signal may be a voltage signal or a current signal, and the cut-off control signal may enable the third protection module to cut off the third charging path, so that the modules of the charging circuit 10 may be protected in real time by the arrangement of the first charging module 120 and the second protection module 170, and the service life of the charging circuit 10 may be prolonged.
Alternatively, the second protection module 170 may be an overvoltage protection device, and the preset condition is that the voltage value of the charging signal is greater than a preset threshold, that is, when the voltage value output by the power adapter 20 is greater than the preset threshold, the first charging module 120 generates a cut-off control signal and sends the cut-off control signal to the controlled terminal of the second protection module 170, so that the second protection module 170 cuts off a third charging path between the first charging interface 110 and the first charging module 120 according to the cut-off control signal, so as to prevent each module in the third charging path from being damaged due to overvoltage. In other embodiments, the second protection module 170 may also be a normally closed switch component, and generate a cut-off control signal to control the normally closed switch component to be turned off when the first charging module 120 detects that the charging signal satisfies the preset condition, so as to cut off the third charging path.
The charging circuit 10 provided in this embodiment includes a first charging interface 110, a battery unit 130, a first charging module 120, a third charging module 160, and a second protection module 170, where the first charging interface 110 is configured to receive a first verification signal and a charging signal sent by a power adapter 20; the first charging module 120 is configured to receive the first check signal, convert the first check signal to output a second check signal, convert the first charging instruction to output a second charging instruction, cooperate with the third charging module 160 to output a target charging signal to the battery unit 130, and generate a cut-off control signal to control the second protection module 170 to cut off the third charging path when detecting that the charging signal satisfies a preset condition. Therefore, the first charging module 120 and the third charging module 160 can realize the signal interaction between the charging circuit 10 and the power adapter 20 and the charging function for the battery unit 130, thereby simplifying the circuit, and being beneficial to improving the reliability of circuit interaction because the interaction is simple and the cooperative error of a plurality of related modules is avoided; the first charging module 120 and the second protection module 170 can implement overvoltage protection or overcurrent protection on each module of the charging circuit 10, thereby improving the service life of the charging circuit 10.
In some embodiments, as shown in fig. 7, the first charging module 120 includes: a power conversion unit 1201 and a signal conversion unit 1202.
In this embodiment, the input terminal of the power converting unit 1201 is a first charging terminal, the output terminal of the power converting unit 1201 is a second charging terminal, and the power converting unit 1201 is configured to perform voltage reduction and current rise processing on an input charging signal to obtain a target charging signal. Optionally, the power conversion unit 1201 performs n-time voltage reduction processing and n-time current increase processing on the input charging signal to obtain a target charging signal; optionally, the power conversion unit 1201 may be a charge pump, which has a high conversion effect and a small heat loss, and can improve the charging efficiency of the charging circuit 10 and improve the user experience. When the power conversion unit 1201 is a charge pump, the second charging module 140 and the third charging module 160 in the above embodiment may also be charge pumps with the same conversion multiple.
In this embodiment, the first terminal of the signal conversion unit 1202 is a first data terminal, the second terminal of the signal conversion unit 1202 is a second data terminal, and the signal conversion unit 1202 is configured to perform conversion processing on the first check signal to obtain a second check signal, store the second check signal, and send a request signal to the processor 30 to request the processor 30 to read the second check signal, and is further configured to perform conversion processing on the first charging instruction to output a second charging instruction. In other embodiments, when the charging circuit 10 includes the first protection module 150 or the second protection module 170, the signal conversion unit 1202 is further configured to generate a cut-off control signal when it is detected that the charging signal satisfies the preset condition, so as to output the cut-off control signal to the first protection module 150 or the second protection module 170, where the control terminal of the signal conversion unit 1202 is the control terminal of the first charging module 120.
Optionally, the signal conversion unit 1202 includes: registers and a protocol converter.
The output terminal of the register is the second terminal of the signal conversion unit 1202, and the register is used for storing the second check signal for being read by the processor 30.
The first input end of the protocol converter is a first data end, the second input end of the protocol converter is a second data end, the output end of the protocol converter is connected with the input end of the register, the protocol converter is used for converting the first check signal into a second check signal in a hexadecimal data form to be stored in the register, and sending a request signal to request the processor 30 to read the second check signal, and is also used for converting the first charging instruction to output a second charging instruction. The first charging command may be an encrypted data signal, the second charging command may be a decoded level signal, and the conversion process of the first charging command may be to decode the encrypted data signal and convert the decoded data signal into the level signal to be transmitted to the power adapter 20.
Among other things, the registers and the protocol converter may be integrated in the power conversion unit 1201, for example, in the charge pump circuit.
In some embodiments, the first charging module 120 is further configured with a detection terminal connected to the battery unit 130, as shown in fig. 7, and the first charging module 120 further includes a detection unit 1203.
The data terminal of the detecting unit 1203 is the detecting terminal of the first charging module 120, and the detecting unit 1203 is configured to obtain the state parameter of the battery unit 130 and output the state parameter to the processor 30, so that the processor 30 adjusts the first charging instruction according to the state parameter. The state parameter may include parameter information such as voltage, electric quantity, and temperature of the battery chip, so that the processor 30 adjusts the first charging instruction according to the parameter information such as voltage, electric quantity, and temperature.
Alternatively, when the state parameter includes a voltage, the detecting unit 1203 may include a series voltage dividing resistor, and the voltage of the battery unit 130 is sampled by voltage dividing; when the state parameter includes a current, the detecting unit 1203 may include a current sensing resistor or a current meter, and the current of the battery cell 130 is sampled and detected through the current sensing resistor or the current meter; when the state parameter includes a temperature parameter, the detecting unit 1203 may include a temperature sensor by which the temperature of the battery unit 130 is detected. Optionally, the detection unit 1203 may further include a high-precision analog-to-digital converter, so that the real-time acquisition status parameters may be subjected to analog-to-digital conversion processing and provided to the processor 30 through I2C.
FIG. 8 is a block diagram of an electronic device in one embodiment. As shown in fig. 8, the electronic device 40 includes the charging circuit 10 as in the above embodiment; and a processor 30, configured to obtain the second check signal, generate the first charging instruction according to the second check signal, and output the first charging instruction to the first charging module 120. The charging circuit 10 and the processor 30 are described in the above embodiments, and are not described herein again.
In an embodiment, the Processor 30 may be an AP (Application Processor 30), and the Processor 30 is a processing center of the electronic device interacting with the power adapter 20 for controlling and adjusting the charging signal from the start of charging to the stop of charging of the charging circuit 10.
The electronic device 40 provided in this embodiment can realize the signal interaction with the power adapter 20 and the charging function for the battery unit 130 through the first charging interface 110, the first charging module 120 and the processor 30, and has a simple structure, and because the interaction is simple, the cooperative error of a plurality of related modules is avoided, which is beneficial to improving the reliability of the interaction of the electronic device.
Fig. 9 is a block diagram of a charging system in one embodiment. As shown in fig. 9, the charging system includes the electronic device 40 as described in the above embodiment; and a power adapter 20. The electronic device 40 and the power adapter 20 are described in the above embodiments and will not be described in detail herein.
The charging system provided by this embodiment can realize the signal interaction between the internal electronic device 40 and the power adapter 20 and the charging function for the battery unit 130 through the first charging interface 110, the first charging module 120, the processor 30 and the power adapter 20, and has a simple structure.
The above examples 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 charging circuit, comprising:
a battery cell;
the first charging interface is used for being connected with a power adapter and receiving a first verification signal and a charging signal sent by the power adapter;
the first charging module is configured with a first data end, a second data end, a first charging end and a second charging end, the first data end and the first charging end are respectively connected with the first charging interface, the second data end is used for being connected with the processor, and the second charging end is connected with the battery unit;
the first charging module is configured to receive the first check signal and convert the first check signal to output a second check signal, where the second check signal is used to instruct the processor to feed back a first charging instruction, the first charging module is further configured to receive the first charging instruction, convert the first charging instruction to output a second charging instruction, and the second charging instruction is used to instruct the power adapter to output the charging signal;
the first charging module is further configured to convert the input charging signal to obtain a target charging signal and output the target charging signal to the battery unit.
2. The charging circuit of claim 1, wherein the first charging module is further configured with a detection terminal, the detection terminal is connected to the battery unit, and the first charging module is further configured to obtain a state parameter of the battery unit and output the state parameter to the processor, so that the processor adjusts the first charging instruction according to the state parameter.
3. The charging circuit of claim 1, wherein the first charging module comprises:
the input end of the power conversion unit is the first charging end, the output end of the power conversion unit is the second charging end, and the power conversion unit is used for performing voltage reduction and current rise processing on the input charging signal to obtain the target charging signal.
4. The charging circuit of claim 1, wherein the first charging module comprises:
the first end of the signal conversion unit is the first data end, the second end of the signal conversion unit is the second data end, the signal conversion unit is used for performing conversion processing on the first check signal to obtain the second check signal, storing the second check signal, sending a request signal to the processor to request the processor to read the second check signal, and further used for performing conversion processing on the first charging instruction to output the second charging instruction.
5. The charging circuit according to claim 4, wherein the signal conversion unit comprises:
the output end of the register is the second end of the signal conversion unit, and the register is used for storing the second check signal to be read by the processor;
the first input end of the protocol converter is the first data end, the second input end of the protocol converter is the second data end, the output end of the protocol converter is connected with the input end of the register, and the protocol converter is used for converting the first check signal into the second check signal in a hexadecimal data form to be stored in the register, and sending the request signal to request the processor to read the second check signal, and is also used for converting the first charging instruction to be processed to output the second charging instruction.
6. The charging circuit of any of claims 1-5, further comprising:
the second charging module is configured with a third charging end and a fourth charging end, the third charging end and the first charging end are connected to the first charging interface in a sharing mode, the fourth charging end and the second charging end are connected to the battery unit in a sharing mode, and the second charging module is used for converting the input charging signal so as to output the target charging signal to the battery unit in a sharing mode with the first charging module.
7. The charging circuit of claim 6, wherein the number of the second charging modules is plural, and the plural second charging modules are arranged in parallel.
8. The charging circuit of claim 6, wherein the charging signal comprises a first branch signal and a second branch signal, and the first charging module is further configured to adjust a first voltage of the first branch signal to a second voltage and adjust a first current of the first branch signal to a second current, wherein the first voltage is n times the second voltage and the second current is n times the first current;
the second charging module is further configured to adjust a third voltage of the second branch signal to a fourth voltage, and adjust a third current of the second branch signal to a fourth current, where the third voltage is n times of the fourth voltage, and the fourth current is n times of the third current;
wherein n is a positive integer.
9. The charging circuit of claim 6, wherein the first charging module is further configured with a control terminal, and the first charging module is further configured to generate a cut-off control signal when detecting that the charging signal satisfies a preset condition; the charging circuit further includes:
the first protection module is connected with the first charging interface at a first end, the first charging end and the third charging end are connected at a second end, a controlled end of the first protection module is connected with the control end, and the first protection module is used for cutting off a first charging path between the first charging interface and the first charging module and a second charging path between the first charging interface and the second charging module according to the cutting-off control signal.
10. The charging circuit of any of claims 1-5, further comprising:
and the third charging module is connected between the first charging module and the battery unit and used for converting the charging signal converted by the first charging module to obtain the target charging signal and outputting the target charging signal to the battery unit.
11. The charging circuit of claim 10, wherein the number of the third charging modules is plural, and a plurality of the third charging modules are arranged in series.
12. The charging circuit of claim 10, wherein the first charging module is further configured to adjust a fifth voltage of the charging signal to a sixth voltage and adjust a fifth current of the charging signal to a sixth current, wherein the fifth voltage is n times the sixth voltage and the fifth current is n times the sixth current;
the third charging module is further configured to adjust the sixth voltage to a seventh voltage and adjust the sixth current to a seventh current, where the sixth voltage is n times of the seventh voltage and the seventh current is n times of the sixth current;
wherein n is a positive integer.
13. The charging circuit of claim 10, wherein the first charging module is further configured with a control terminal, and the first charging module is further configured to generate a cut-off control signal when detecting that the charging signal satisfies a preset condition; the charging circuit further includes:
and a first end of the second protection module is connected with the first charging interface, a second end of the second protection module is connected with the first charging end, a controlled end of the second protection module is connected with the control end, and the second protection module is used for cutting off a third charging path between the first charging interface and the first charging module according to the cutting-off control signal.
14. An electronic device, comprising:
a charging circuit as claimed in any one of claims 1-13; and
the processor is configured to obtain the second check signal, generate a first charging instruction according to the second check signal, and output the first charging instruction to the first charging module.
15. An electrical charging system, comprising:
the electronic device of claim 14; and
a power adapter.
CN202110615952.4A 2021-06-02 2021-06-02 Charging circuit, electronic device and charging system Pending CN113394841A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116545083A (en) * 2023-06-27 2023-08-04 荣耀终端有限公司 Charging circuit, electronic equipment and power adapter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116545083A (en) * 2023-06-27 2023-08-04 荣耀终端有限公司 Charging circuit, electronic equipment and power adapter

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