CN210327077U - Fast charging circuit and device - Google Patents
Fast charging circuit and device Download PDFInfo
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- CN210327077U CN210327077U CN201921275805.1U CN201921275805U CN210327077U CN 210327077 U CN210327077 U CN 210327077U CN 201921275805 U CN201921275805 U CN 201921275805U CN 210327077 U CN210327077 U CN 210327077U
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Abstract
A quick charging circuit and a device thereof, by adding an input voltage detection module, a battery end current detection module, a control module, a voltage signal output module and a charging regulation module, thereby realizing the output voltage of a controllable adjustment adapter, and according to the output voltage of the adapter, the charging voltage and the charging current of a battery end are used for judging the input voltage value and the full charging degree of the battery, thereby ensuring that the charging voltage is always kept as a constant value and adjusting the charging current output to the battery in real time, namely, the quick charging of the battery is realized in the charging process, and the overlarge voltage of the battery is avoided, thereby solving the problem that the traditional technical scheme is always charged with a constant current to the battery and further leads to the quick charging circuit.
Description
Technical Field
The utility model belongs to the technical field of charge, especially, relate to a quick charge circuit and device.
Background
At present, a conventional battery charging circuit is generally a constant current charging circuit, that is, a battery is charged with a constant current under the condition that the battery is lower than a charging limit voltage, but generally, a ratio of a magnitude of a charging current to a battery capacity (called charging current multiplying factor) is in a direct proportional relation with a battery charging speed, that is, the charging current multiplying factor is larger, the battery charging speed is faster, and the battery voltage is higher in addition to increasing with the increase of the battery fullness, so that if the battery is charged with a small constant current all the time in the charging process, the charging speed is too slow, and if the battery is charged with a large constant current all the time, the battery voltage is too high to damage the battery in the later period of charging.
Therefore, the conventional technical scheme has the defects that the charging speed is too slow or the battery voltage is too high so as to damage the battery.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention provides a fast charging circuit and device, which aims to solve the problem of the conventional technical solution that the charging speed is too slow or the battery voltage is too high and the battery is damaged.
The utility model discloses a first aspect of the embodiment provides a quick charge circuit, is connected with adapter and battery, quick charge circuit includes:
the input end of the input voltage detection module is connected with the power output end of the adapter, and the input voltage detection module is used for detecting the input voltage value output by the adapter;
the battery terminal voltage detection module is used for detecting a charging voltage value output to the battery;
the battery end current detection module is used for detecting the charging current value output to the battery;
the control module is connected with the input voltage detection module, the battery end voltage detection module and the battery end current detection module, and is used for outputting a voltage control signal and adjusting an output PWM control signal according to the input voltage value, the charging voltage value and the charging current value;
the input end of the voltage signal output module is connected with a working power supply, the control end of the voltage signal output module is connected with the control module, the output end of the voltage signal output module is connected with the differential signal end of the adapter, the feedback end of the voltage signal output module is connected with the control module, the voltage signal output module is used for outputting a voltage signal to the adapter under the control of the voltage control signal, and the adapter outputs a preset voltage value according to the voltage signal; and
the input end of the charging adjusting module is connected with the power output end of the adapter, the output end of the charging adjusting module is connected with the positive electrode of the battery, the control end of the charging adjusting module is connected with the PWM output end of the control module, and the charging adjusting module is used for reducing the output voltage of the adapter into constant voltage and adjusting and outputting the constant voltage to the charging current of the battery under the control of the PWM control signal.
In one embodiment, the input voltage detection module includes a first resistor and a second resistor, a first end of the first resistor is used as an input end of the input voltage detection module, a second end of the first resistor and a first end of the second resistor are connected in common to be used as an output end of the input voltage detection module and connected with the control module, and a second end of the second resistor is grounded.
In one embodiment, the voltage signal output module comprises a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and a first diode, a first end of the third resistor and an anode of the first diode are connected in common as a first output end of the voltage signal output module to be connected with the adapter, a first end of the fourth resistor and a first end of the sixth resistor are connected in common as a second output end of the voltage signal output module to be connected with the adapter, a second end of the third resistor, a second end of the seventh resistor and a second end of the fifth resistor are connected in common as a first feedback end of the voltage signal output module to be connected with the control module, a second end of the eighth resistor and a second end of the fourth resistor are connected in common as a second feedback end of the voltage signal output module to be connected with the control module, the negative electrode of the first diode and the first end of the eighth resistor are connected in common to serve as the control end of the voltage signal output module and connected with the control module, the first end of the seventh resistor is connected with the working power supply, the second end of the fifth resistor is grounded, and the second end of the sixth resistor is grounded.
In one embodiment, the battery terminal voltage detection module comprises a ninth resistor and a tenth resistor, a first end of the ninth resistor is used as an input end of the battery terminal voltage detection module, a second end of the ninth resistor and a first end of the tenth resistor are connected in common to be used as an output end of the battery terminal voltage detection module and connected with the control module, and a second end of the tenth resistor is grounded.
In one embodiment, the battery-side current detection module comprises an eleventh resistor, a first end of the eleventh resistor is connected with the negative electrode of the battery and the control module, and a second end of the eleventh resistor is grounded.
In one embodiment, the charging adjustment module includes a first switch tube, a second switch tube, a twelfth resistor, and a first inductor, an input end of the first switch tube is used as an input end of the charging adjustment module, an output end of the first switch tube and a first end of the twelfth resistor are connected to an input end of the second switch tube, an output end of the second switch tube is connected to a first end of the first inductor, a second end of the first inductor is used as an output end of the charging adjustment module, and a control end of the first switch tube, a second end of the twelfth resistor, and a control end of the second switch tube are connected to a control end of the charging adjustment module.
In one embodiment, further comprising: the power end of the temperature detection module is connected with the working current, the output end of the temperature detection module is connected with the control module, the temperature detection module is used for detecting the temperature of the battery, and the control module adjusts the PWM control signal according to the temperature of the battery.
In one embodiment, the temperature detection module includes: the first end of the thirteenth resistor is connected with the working power supply, the second end of the thirteenth resistor and the first end of the thermistor are connected together to serve as the output end of the temperature detection module to be connected with the control module, and the second end of the thermistor is grounded.
In one embodiment, further comprising: and the input end of the voltage stabilizing module is connected with the power output end of the adapter, and the voltage stabilizing module is used for providing the working power supply.
A second aspect of the embodiments provides a quick-charging device, is connected with adapter and battery, quick-charging device includes: an interface module for connecting with the adapter; and as the embodiment of the utility model provides a first aspect the quick charge circuit, the input of quick charge circuit passes through interface module with the adapter is connected, the output of quick charge circuit with the battery is connected.
The quick charging circuit and the device realize the controllable output voltage of the adjusting adapter by adding the input voltage detecting module, the battery end current detecting module, the control module, the voltage signal output module and the charging adjusting module, judge the input voltage value and the full charging degree of the battery according to the output voltage of the adapter, the charging voltage and the charging current of the battery end, and further ensure that the charging voltage is always kept at a constant value and adjust the size of the charging current output to the battery in real time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic circuit diagram of a fast charging circuit according to an embodiment of the present invention;
FIG. 2 is an exemplary circuit schematic of a control module in the fast charge circuit shown in FIG. 1;
FIG. 3 is an exemplary circuit schematic of an input voltage detection module in the fast charge circuit shown in FIG. 1;
FIG. 4 is an exemplary circuit schematic of a voltage signal output module of the fast charge circuit shown in FIG. 1;
FIG. 5 is an exemplary circuit schematic of a battery terminal voltage detection module of the fast charge circuit shown in FIG. 1;
FIG. 6 is an exemplary circuit schematic of a charge regulation module in the fast charge circuit of FIG. 1;
fig. 7 is another schematic circuit diagram of a fast charging circuit according to an embodiment of the present invention;
FIG. 8 is an exemplary circuit schematic of a temperature detection module in the fast charge circuit of FIG. 7;
fig. 9 is another schematic circuit diagram of a fast charging circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a circuit diagram of a fast charging circuit according to a first aspect of the embodiment of the present invention is shown, for convenience of illustration, only the relevant portions of the embodiment are shown, and the detailed description is as follows:
the quick charging circuit in this embodiment is connected to the adapter 100 and the battery 200, and includes: an input voltage detection module 300, a battery terminal voltage detection module 410, a battery terminal current detection module 420, a control module 500, a voltage signal output module 600 and a charge regulation module 700, wherein an input end of the input voltage detection module 300 is connected with a power output end of the adapter 100, an input end of the battery terminal voltage detection module 410 is connected with a positive electrode of the battery 200, an input end of the battery terminal current detection module 420 is connected with a negative electrode of the battery 200, the control module 500 is connected with the input voltage detection module 300, the battery terminal voltage detection module 410 and the battery terminal current detection module 420, an input end of the voltage signal output module 600 is connected with a working power supply VDD, a control end of the voltage signal output module 600 is connected with the control module 500, an output end of the voltage signal output module 600 is connected with a differential signal end of the adapter 100, a feedback end of the voltage signal output module 600 is connected with the control module, the input end of the charging adjustment module 700 is connected to the power output end of the adapter 100, the output end of the charging adjustment module 700 is connected to the positive electrode of the battery 200, and the control end of the charging adjustment module 700 is connected to the PWM (pulse width Modulation) output end of the control module 500; the input voltage detection module 300 is used for detecting an input voltage value output by the adapter 100; the battery terminal voltage detection module 410 is used for detecting a charging voltage value output to the battery 200; the battery terminal current detection module 420 is configured to detect a charging current value output to the battery 200; the control module 500 is configured to output a voltage control signal and adjust the output PWM control signal according to the input voltage value, the charging voltage value, and the charging current value; the voltage signal output module 600 is configured to output a voltage signal to the adapter 100 under the control of the voltage control signal, and the adapter 100 outputs a preset voltage value according to the voltage signal; and a charging adjustment module 700, wherein the charging adjustment module 700 is configured to step down the output voltage of the adapter 100 to a constant voltage and adjust the magnitude of the charging current output to the battery 200 under the control of the PWM control signal.
It should be understood that the input voltage detection module 300 may be comprised of a plurality of sampling resistors; the battery terminal voltage detection module 410 may be composed of a plurality of sampling resistors; the battery-side current detection module 420 may be composed of a plurality of sampling resistors; the control module 500 may be formed by a microprocessor, such as a single chip microcomputer, in this embodiment, an 8-bit single chip microcomputer may be used, and in other embodiments, other types of single chip microcomputers may also be used; the voltage signal output module 600 may be composed of a plurality of resistors; the charging adjustment module 700 may be formed of a voltage reduction circuit that is turned off according to the PWM control signal, for example, a voltage reduction circuit formed of an MOS transistor; the PWM control signal is a pulse width modulation signal.
It should be understood that the adapter 100 in this embodiment may be an adapter 100 supporting a fast charge protocol, and after the differential signal end of the adapter 100 receives the output signal of the voltage signal output module 600, the adapter 100 may output a preset voltage value according to the voltage signal, where the preset voltage value may be a voltage set by the fast charge protocol and corresponding to a specific voltage signal value received by the differential signal end; the adapter 100 in this embodiment may also be an adapter 100 that does not support the fast charging protocol, and the preset voltage value is a constant voltage value, for example, 5V.
It should be understood that, in the present embodiment, the charging adjustment module 700 steps down the output voltage of the adapter 100 to the constant voltage of the constant voltages, which is the battery 200, of the battery 200, the control module 500 adjusts the PWM control signal output to the charging adjustment module 700 according to the input voltage value, the charging voltage value, and the charging current value, so that the voltage output by the charging adjustment module 700 is the constant voltage regardless of the voltage value input to the charging adjustment module 700, that is, the charging voltage output to the battery is the battery voltage, and adjusts the magnitude of the charging current output by the charging adjustment module 700 to the battery 200 in real time, for example, the magnitude of the charging current can be adjusted according to the full charge degree of the battery 200, and the full charge degree of the battery 200 and the magnitude of the charging current can be in inverse proportion.
The fast charging circuit in this embodiment, by adding the input voltage detection module 300, the battery terminal voltage detection module 410, the battery terminal current detection module 420, the control module 500, the voltage signal output module 600, and the charging adjustment module 700, it is achieved that the output voltage of the adapter 100 can be controllably adjusted, and the input voltage value and the full charge degree of the battery 200 can be determined according to the output voltage of the adapter 100, the charging voltage and the charging current at the battery 200 terminal, thereby ensuring that the charging voltage is always kept at a constant value and adjusting the magnitude of the charging current output to the battery 200 in real time, that is, in the charging process, fast charging of the battery 200 is achieved, and the problem that the fast charging circuit is caused by charging the battery 200 with a constant current all the time is solved.
Referring to fig. 2, in an embodiment, the control module 500 includes a single chip microcomputer U1, wherein a power supply of the single chip microcomputer U1 is connected to a working power supply VDD, a second pin and a third pin of the single chip microcomputer U1 are respectively connected to a first feedback end and a second feedback end of the voltage signal output module 600, a fourth pin of the single chip microcomputer U1 is connected to the input voltage detection module 300, a fifth pin of the single chip microcomputer U1 is connected to the control end of the charging adjustment module 700, a sixth pin of the single chip microcomputer U1 is connected to the control end of the voltage signal output module 600, a seventh pin of the single chip microcomputer U1 is connected to the output end of the temperature detection module 800, an eighth pin of the single chip microcomputer U1 is connected to the output end of the battery end current detection module 420, and a ninth pin of the single chip microcomputer U1 is connected to the output end of the battery.
Referring to fig. 3, in an embodiment, the input voltage detecting module 300 includes a first resistor R1 and a second resistor R2, a first end of the first resistor R1 is used as an input end of the input voltage detecting module 300, a second end of the first resistor R1 and a first end of the second resistor R2 are commonly connected as an output end of the input voltage detecting module 300 to be connected to the control module 500, and a second end of the second resistor R2 is grounded.
Referring to fig. 4, in an embodiment, the voltage signal output module 600 includes a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, and a first diode D1, a first end of the third resistor R3 and a positive electrode of the first diode D1 are commonly connected as a first output terminal of the voltage signal output module 600 to the adaptor 100, a first end of the fourth resistor R4 and a first end of the sixth resistor R6 are commonly connected as a second output terminal of the voltage signal output module 600 to the adaptor 100, a second end of the third resistor R3, a second end of the seventh resistor R7, and a second end of the fifth resistor R5 are commonly connected as a first feedback terminal of the voltage signal output module 600 to the control module 500, a second end of the eighth resistor R8 and a second end of the fourth resistor R4 are commonly connected as a second feedback terminal of the voltage signal output module 600 to the control module 500, the cathode of the first diode D1 and the first end of the eighth resistor R8 are commonly connected as the control end of the voltage signal output module 600 to be connected to the control module 500, the first end of the seventh resistor R7 is connected to the operating power VDD, the second end of the fifth resistor R5 is grounded, and the second end of the sixth resistor R6 is grounded.
It should be understood that in the present embodiment, the first diode D1 may be a high-speed switching diode, for example, a diode model 1N4148, and in other embodiments, other diode models may be used.
Referring to fig. 5, in an embodiment, the battery terminal voltage detecting module 410 includes a ninth resistor R9 and a tenth resistor R10, a first terminal of the ninth resistor R9 is used as an input terminal of the battery terminal voltage detecting module 410, a second terminal of the ninth resistor R9 and a first terminal of the tenth resistor R10 are commonly connected as an output terminal of the battery terminal voltage detecting module 410 and connected to the control module 500, and a second terminal of the tenth resistor R10 is connected to ground.
In one embodiment, the battery-side current detection module 420 includes an eleventh resistor R11, a first terminal of the eleventh resistor R11 is connected to the negative terminal of the battery 200 and the control module 500, and a second terminal of the eleventh resistor R11 is grounded.
Referring to fig. 6, in an embodiment, the charging adjustment module 700 includes a first switch Q1, a second switch Q2, a twelfth resistor R12, and a first inductor L1, an input end of the first switch Q1 is used as an input end of the charging adjustment module 700, an output end of the first switch Q1 and a first end of the twelfth resistor R12 are commonly connected to an input end of the second switch Q2, an output end of the second switch Q2 is connected to a first end of the first inductor L1, a second end of the first inductor L1 is used as an output end of the charging adjustment module 700, and a control end of the first switch Q1, a second end of the twelfth resistor R12, and a control end of the second switch Q2 are commonly connected to a control end of the charging adjustment module 700.
It should be understood that the first switch Q1 and the second switch Q2 may be MOS transistors or IGBT thyristors, and in this embodiment, the first switch Q1 and the second switch Q2 are NMOS transistors, and in other embodiments, other switch transistors may also be used.
It should be understood that the output terminal of the charging adjustment module 700 may further include a plurality of filter capacitors, a first terminal of each filter capacitor is connected to the output terminal of the charging adjustment module 700, a second terminal of each filter capacitor is grounded, and each filter capacitor is used for filtering out clutter interference.
Referring to fig. 7, in an embodiment, the method further includes: the power end of the temperature detection module 800 is connected with the working current, the output end of the temperature detection module 800 is connected with the control module 500, the temperature detection module 800 is used for detecting the temperature of the battery 200, and the control module 500 adjusts the PWM control signal according to the temperature of the battery 200.
It should be understood that the temperature detecting module 800 may employ a device or a chip having a temperature detecting function, such as the thermistor R14 or a temperature sensor. The temperature detection module 800 in this embodiment feeds back the detected temperature of the battery 200 to the control module 500, and the control module 500 determines whether the temperature is normal, and when the temperature is abnormal, adjusts the output of the PWM control signal to turn off the charging adjustment module 700, and stops charging the battery 200, thereby avoiding the occurrence of the situation that the battery 200 is damaged due to the excessively high temperature of the battery 200.
It should be understood that the temperature detecting module 800 in this embodiment may also be configured to send an interrupt signal to the control module 500 when the temperature of the battery 200 is higher than the warning value, and the control module 500 adjusts the output of the PWM control signal according to the interrupt signal, so as to turn off the charging adjusting module 700, and stop charging the battery 200.
Referring to fig. 8, in one embodiment, the temperature detecting module 800 includes: a thirteenth resistor R13 and a thermistor R14, wherein a first end of the thirteenth resistor R13 is connected with the working power supply VDD, a second end of the thirteenth resistor R13 and a first end of the thermistor R14 are connected together as an output end of the temperature detection module 800 and connected with the control module 500, and a second end of the thermistor R14 is grounded.
It should be appreciated that the thermistor R14 in this embodiment should be placed close to the battery 200 to more accurately sense and reflect the actual temperature of the battery 200.
Referring to fig. 9, in an embodiment, the method further includes: and the input end of the voltage stabilizing module 900 is connected with the power output end of the adapter 100, and the voltage stabilizing module 900 is used for providing a working power supply VDD.
It should be understood that the voltage stabilizing module 900 may be formed by a voltage stabilizing chip, a power input terminal of the voltage stabilizing chip is used as an input terminal of the voltage stabilizing module 900, an output terminal of the voltage stabilizing chip is used as an output terminal of the voltage stabilizing module 900 to output the working power VDD, optionally, the power input terminal of the voltage stabilizing chip may be further connected to first terminals of a plurality of filter capacitors, and second terminals of the respective filter capacitors are grounded.
The utility model discloses the second aspect of the embodiment provides quick charge device, is connected with adapter and battery, and quick charge device includes: the interface module is used for being connected with the adapter; and if the utility model discloses the quick charge circuit of the arbitrary one embodiment of first aspect, quick charge circuit's input passes through interface module and is connected with the adapter, and quick charge circuit's output and battery are connected. It should be understood that the interface module in the present embodiment may be constituted by a USB interface.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A quick charge circuit for connection to an adapter and a battery, the quick charge circuit comprising:
the input end of the input voltage detection module is connected with the power output end of the adapter, and the input voltage detection module is used for detecting the input voltage value output by the adapter;
the battery terminal voltage detection module is used for detecting a charging voltage value output to the battery;
the battery end current detection module is used for detecting the charging current value output to the battery;
the control module is connected with the input voltage detection module, the battery end voltage detection module and the battery end current detection module, and is used for outputting a voltage control signal and adjusting an output PWM control signal according to the input voltage value, the charging voltage value and the charging current value;
the input end of the voltage signal output module is connected with a working power supply, the control end of the voltage signal output module is connected with the control module, the output end of the voltage signal output module is connected with the differential signal end of the adapter, the feedback end of the voltage signal output module is connected with the control module, the voltage signal output module is used for outputting a voltage signal to the adapter under the control of the voltage control signal, and the adapter outputs a preset voltage value according to the voltage signal; and
the input end of the charging adjusting module is connected with the power output end of the adapter, the output end of the charging adjusting module is connected with the positive electrode of the battery, the control end of the charging adjusting module is connected with the PWM output end of the control module, and the charging adjusting module is used for reducing the output voltage of the adapter into constant voltage and adjusting and outputting the constant voltage to the charging current of the battery under the control of the PWM control signal.
2. The fast charging circuit of claim 1, wherein the input voltage detection module comprises a first resistor and a second resistor, a first terminal of the first resistor is used as the input terminal of the input voltage detection module, a second terminal of the first resistor and a first terminal of the second resistor are connected in common to serve as the output terminal of the input voltage detection module and connected to the control module, and a second terminal of the second resistor is connected to ground.
3. The fast charging circuit of claim 1, wherein the voltage signal output module comprises a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, and a first diode, a first terminal of the third resistor and a positive terminal of the first diode are commonly connected as a first output terminal of the voltage signal output module to the adapter, a first terminal of the fourth resistor and a first terminal of the sixth resistor are commonly connected as a second output terminal of the voltage signal output module to the adapter, a second terminal of the third resistor, a second terminal of the seventh resistor, and a second terminal of the fifth resistor are commonly connected as a first feedback terminal of the voltage signal output module to the control module, a second terminal of the eighth resistor and a second terminal of the fourth resistor are commonly connected as a second feedback terminal of the voltage signal output module to the control module, the negative electrode of the first diode and the first end of the eighth resistor are connected in common to serve as the control end of the voltage signal output module and connected with the control module, the first end of the seventh resistor is connected with the working power supply, the second end of the fifth resistor is grounded, and the second end of the sixth resistor is grounded.
4. The fast charging circuit as claimed in claim 1, wherein the battery terminal voltage detecting module comprises a ninth resistor and a tenth resistor, a first terminal of the ninth resistor is used as the input terminal of the battery terminal voltage detecting module, a second terminal of the ninth resistor and a first terminal of the tenth resistor are connected together as the output terminal of the battery terminal voltage detecting module to be connected to the control module, and a second terminal of the tenth resistor is connected to ground.
5. The fast charging circuit of claim 1, wherein the battery-side current detection module comprises an eleventh resistor, a first terminal of the eleventh resistor is connected to the negative terminal of the battery and the control module, and a second terminal of the eleventh resistor is connected to ground.
6. The fast charging circuit according to claim 1, wherein the charging adjustment module includes a first switch tube, a second switch tube, a twelfth resistor, and a first inductor, an input terminal of the first switch tube serves as an input terminal of the charging adjustment module, an output terminal of the first switch tube and a first terminal of the twelfth resistor are commonly connected to an input terminal of the second switch tube, an output terminal of the second switch tube is connected to a first terminal of the first inductor, a second terminal of the first inductor serves as an output terminal of the charging adjustment module, and a control terminal of the first switch tube, a second terminal of the twelfth resistor, and a control terminal of the second switch tube are commonly connected to a control terminal of the charging adjustment module.
7. The fast charge circuit of claim 1, further comprising:
the power end of the temperature detection module is connected with the working current, the output end of the temperature detection module is connected with the control module, the temperature detection module is used for detecting the temperature of the battery, and the control module adjusts the PWM control signal according to the temperature of the battery.
8. The fast charge circuit of claim 7, wherein said temperature detection module comprises: the first end of the thirteenth resistor is connected with the working power supply, the second end of the thirteenth resistor and the first end of the thermistor are connected together to serve as the output end of the temperature detection module to be connected with the control module, and the second end of the thermistor is grounded.
9. The fast charge circuit of claim 1, further comprising:
and the input end of the voltage stabilizing module is connected with the power output end of the adapter, and the voltage stabilizing module is used for providing the working power supply.
10. A quick-charging device, connected to an adapter and a battery, comprising:
an interface module for connecting with the adapter; and
the fast charging circuit of any of claims 1-9, an input of the fast charging circuit being connected to the adapter through the interface module, an output of the fast charging circuit being connected to the battery.
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|---|---|---|---|
| CN201921275805.1U CN210327077U (en) | 2019-08-06 | 2019-08-06 | Fast charging circuit and device |
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| CN201921275805.1U CN210327077U (en) | 2019-08-06 | 2019-08-06 | Fast charging circuit and device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817387A (en) * | 2020-07-14 | 2020-10-23 | Oppo广东移动通信有限公司 | Charging circuit, control method thereof and electronic equipment |
| CN112433160A (en) * | 2020-11-13 | 2021-03-02 | Oppo广东移动通信有限公司 | Terminal testing method and device, testing tool and storage medium |
| CN112737022A (en) * | 2020-12-25 | 2021-04-30 | 维沃移动通信有限公司 | Charging circuit, method and device and electronic equipment |
| CN113949123A (en) * | 2021-10-09 | 2022-01-18 | 展讯通信（深圳）有限公司 | Electronic device and charging control method |
-
2019
- 2019-08-06 CN CN201921275805.1U patent/CN210327077U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817387A (en) * | 2020-07-14 | 2020-10-23 | Oppo广东移动通信有限公司 | Charging circuit, control method thereof and electronic equipment |
| CN112433160A (en) * | 2020-11-13 | 2021-03-02 | Oppo广东移动通信有限公司 | Terminal testing method and device, testing tool and storage medium |
| CN112737022A (en) * | 2020-12-25 | 2021-04-30 | 维沃移动通信有限公司 | Charging circuit, method and device and electronic equipment |
| CN113949123A (en) * | 2021-10-09 | 2022-01-18 | 展讯通信（深圳）有限公司 | Electronic device and charging control method |
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