CN210225002U - Charging control device and system - Google Patents
Charging control device and system Download PDFInfo
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- CN210225002U CN210225002U CN201921286088.2U CN201921286088U CN210225002U CN 210225002 U CN210225002 U CN 210225002U CN 201921286088 U CN201921286088 U CN 201921286088U CN 210225002 U CN210225002 U CN 210225002U
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Abstract
The utility model provides a charge control device and system relates to the field of charging. The device includes: the charging circuit comprises a main control circuit and a charging module connected with the main control circuit; the charging module comprises an adapter unit and a charging management circuit connected with the adapter unit, and the charging management circuit is also connected with the main control circuit and the lithium battery and is used for managing the charging process of the lithium battery when the adapter unit is connected with an external power supply; the charging management circuit comprises a plurality of control input ends, and one control output end corresponds to one control input end; the main control circuit is used for sending control signals to the control input ends through the control output ends when the lithium battery is charged so as to control the charging process of the lithium battery. The utility model discloses a charge control device and system can control the charging process of lithium cell to make the charging current of lithium cell carry out self-adaptation regulation, in order to satisfy multiple consumer's the needs of charging.
Description
Technical Field
The utility model belongs to the technical field of the technique of charging and specifically relates to a charge control device and system are related to.
Background
Nowadays, with the popularization of more and more charging devices, various adapters are more and more, and the existing charging devices can only meet the charging requirements of a single electric device, but are difficult to meet the charging requirements of a plurality of electric devices.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a charging control device and system to improve the technical problem that it is difficult to satisfy the charging requirements of a plurality of electric devices.
In a first aspect, an embodiment of the present invention provides a charging control device, which includes a main control circuit and a charging module connected to the main control circuit;
the charging module comprises an adapter unit and a charging management circuit connected with the adapter unit, and the charging management circuit is also connected with the main control circuit and the lithium battery and is used for managing the charging process of the lithium battery when the adapter unit is connected with an external power supply;
the master control circuit comprises a plurality of control output ends, the charging management circuit comprises a plurality of control input ends, and one control output end corresponds to one control input end;
the main control circuit is used for sending a control signal to the control input end through the control output end when the lithium battery is charged so as to control the charging process of the lithium battery.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, wherein the charging management circuit includes a charging management chip, and the charging management chip includes an input terminal, an output terminal, and a control terminal;
the input end is connected with the adapter unit, and the output end is connected with the lithium battery;
and the control input ends are connected with the control ends, and the current corresponding to the control ends is changed according to the control signals so as to control the charging current of the lithium battery.
With reference to the first aspect, embodiments of the present invention provide a second possible implementation manner of the first aspect, where the adapter unit includes an adapter input circuit and a voltage detection circuit connected to the adapter input circuit; the voltage detection circuit is also connected with the main control circuit;
the adapter input circuit is used for converting an electric signal input by the external power supply and inputting the converted electric signal to the charging management circuit so as to charge the lithium battery;
the voltage detection circuit is used for collecting the converted electric signals and transmitting the converted electric signals to the main control circuit, so that the main control circuit detects the converted electric signals.
With reference to the second possible implementation manner of the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein the voltage detection circuit includes a voltage division circuit and a collection branch;
one end of the acquisition branch circuit is connected with the voltage division circuit, and the other end of the acquisition branch circuit is connected with the main control circuit;
the voltage division circuit is used for carrying out voltage division processing on the acquired converted electric signals to generate voltage division signals, and transmitting the voltage division signals to the main control circuit through the acquisition branch circuit, so that the main control circuit detects the converted electric signals according to the voltage division signals.
With reference to the second possible implementation manner of the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the apparatus further includes a power conversion supply circuit; the power supply conversion power supply circuit is used for supplying power to the main control circuit and the charging module;
the power supply conversion power supply circuit comprises a voltage stabilizing circuit and a first power supply branch circuit connected with the voltage stabilizing circuit;
the first power supply branch circuit is used for acquiring the converted electric signal and inputting the converted electric signal to the voltage stabilizing circuit;
the voltage stabilizing circuit is used for performing voltage stabilizing processing on the converted electric signals so as to supply power to the main control circuit and the charging module.
With reference to the fourth possible implementation manner of the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, wherein the power conversion and supply circuit further includes a second power supply branch connected to the voltage stabilizing circuit;
the second power supply branch circuit is connected with the lithium battery and used for acquiring an output electric signal of the lithium battery when the lithium battery discharges and transmitting the output electric signal to the voltage stabilizing circuit;
the voltage stabilizing circuit is used for carrying out voltage stabilizing processing on the output electric signal so as to supply power to the main control circuit and the charging module.
With reference to the fifth possible implementation manner of the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where the apparatus further includes a discharge management circuit, and the discharge management circuit includes a discharge management chip;
the lithium battery is connected with the discharge management circuit, the discharge management chip is used for acquiring the output electric signal of the lithium battery when the lithium battery discharges, and stopping the discharge process of the lithium battery when the output electric signal is lower than a preset discharge threshold value.
In combination with the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, where the apparatus further includes a display control circuit, where the display control circuit includes a plurality of connected display branches, and each display branch is connected to the main control circuit;
each display branch comprises an indicator light for displaying the working state of the charging control device under the control of the main control circuit.
With reference to the first aspect, an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, where the main control circuit includes a main control chip, and the main control chip is provided with an ADC module and a plurality of I/O ports;
each control output end corresponds to one I/O port to output the control signal.
In a second aspect, an embodiment of the present invention further provides a charging control system, which includes a lithium battery and further includes the above charging control device;
the charging control device is connected with the lithium battery and used for managing the charging and discharging process of the lithium battery.
The embodiment of the utility model provides a following beneficial effect has been brought: in the charging control device and system provided by the embodiment of the utility model, the charging management circuit is connected with the main control circuit and the lithium battery and is used for managing the charging process of the lithium battery when the adapter unit is connected with the external power supply; the main control circuit comprises a plurality of control output ends which are in one-to-one correspondence with the plurality of control input ends of the charging management circuit; the main control circuit sends control signals to the control input ends through the control output ends when the lithium battery is charged, so that the charging process of the lithium battery is controlled, and then the charging current of the lithium battery is subjected to self-adaptive adjustment, so that the charging requirements of various electric equipment are met.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of a charging control device according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a main control circuit according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a charging management circuit according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of an adapter input circuit of an adapter unit according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a voltage detection circuit of an adapter unit according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a power conversion circuit according to an embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a discharge management circuit according to an embodiment of the present invention;
fig. 8 is a schematic circuit diagram of a display control circuit according to an embodiment of the present invention;
fig. 9 is a functional block diagram of a charging control device according to an embodiment of the present invention;
fig. 10 is a block diagram of a charging control system according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
At present, with the popularization of more and more USB charging devices, various adapters are more and more, when a lithium battery of the USB charging device is charged in a constant-current mode (the lithium battery is in three modes during charging: a trickle charging mode, a constant-current charging mode and a constant-voltage charging mode), because the charging current of the lithium battery is constant, and only the rated charging current of the USB charging device is limited through hardware, the charging requirements of a plurality of electric devices are difficult to meet by some charging devices, and the normal work of other electric devices is influenced. Based on this, the embodiment of the utility model provides a charge control device and system to alleviate above-mentioned problem.
In order to facilitate understanding of the present embodiment, a charging control device disclosed in an embodiment of the present invention is first described in detail.
In one possible embodiment, the present invention provides a charge control device. As shown in fig. 1, an embodiment of the present invention provides a structural block diagram of a charging control device, where the charging control device includes: the charging circuit comprises a main control circuit 101 and a charging module 102 connected with the main control circuit 101;
the charging module 102 includes an adapter unit 103 and a charging management circuit 104 connected to the adapter unit 103, wherein the charging management circuit 104 is further connected to the main control circuit 101 and a lithium battery (not shown in fig. 1) for managing a charging process of the lithium battery when the adapter unit 103 is connected to an external power supply;
the main control circuit 101 includes a plurality of control output terminals 105, the charging management circuit 104 includes a plurality of control input terminals 106, and one control output terminal 105 corresponds to one control input terminal 106;
the main control circuit 101 is configured to send control signals to the control input terminals 106 through the control output terminals 105 when the lithium battery is charged, so as to control a charging process of the lithium battery.
The embodiment of the utility model provides a following beneficial effect has been brought: the embodiment of the utility model provides a charging control device, its charging management circuit is connected with main control circuit and lithium cell, is used for managing the charging process of lithium cell when the adapter unit inserts external power supply; the main control circuit comprises a plurality of control output ends which are in one-to-one correspondence with the plurality of control input ends of the charging management circuit; the main control circuit sends control signals to the control input ends through the control output ends when the lithium battery is charged, so that the charging process of the lithium battery is controlled, and then the charging current of the lithium battery is subjected to self-adaptive adjustment, so that the charging requirements of various electric equipment are met.
Wherein, the embodiment of the utility model provides a charge control device is used for domestic USB battery charging outfit of taking more, through this charge control device's control to avoid because some battery charging outfit that the charging current of lithium cell can not self-adaptation regulation and lead to can not adapt to different output's adapter or have the adapter of multiplexed output, thereby lead to operating system unstability.
In practical use, the main control circuit 101 in the embodiment of the present invention adopts a single chip microcomputer (microcontroller), which has an ADC (Analog-to-Digital Converter) module and has multiple I/O (Input/Output) ports.
For easy understanding, fig. 2 shows a schematic circuit diagram of a main control circuit 101 provided by an embodiment of the present invention, and as shown in fig. 2, the main control circuit includes a main control chip U4, and the main control chip is provided with an ADC module and a plurality of I/O ports; each control output end corresponds to one I/O port to output a control signal. In fig. 2, the I/O ports corresponding to the pins 7-10 are control output terminals, and the connection of the other pins of the main control chip U4 is as shown in fig. 2.
Further, the charging management circuit 104 includes a charging management chip, and the charging management chip includes an input terminal, an output terminal, and a control terminal. The input end is connected with the adapter unit 103, and the output end is connected with the lithium battery; the plurality of control input terminals 106 are connected to the control terminal, and change the current corresponding to the control terminal according to the control signal to control the charging current of the lithium battery.
For easy understanding, fig. 3 shows a schematic circuit diagram of a charging management circuit according to an embodiment of the present invention, the schematic circuit diagram includes devices such as a charging management chip U2, resistors R6, R7, R8, R9, R10, R11, R14, R15, and capacitors C8 and C9, which are connected as shown in fig. 3, wherein the pin 4 in fig. 3 is an input terminal connected to an adapter, and the resistor R15 and the capacitor C9 are connected in series at the input terminal, and are connected to the adapter through VOUT; pin 3 in fig. 3 is an output terminal connected to a lithium battery, and a resistor R14 and a capacitor C8 are connected in series to the input terminal and connected to the lithium battery via BAT +; the PROG pin corresponding to pin 5 in fig. 3 is a control terminal to which a plurality of control input terminals, i.e., current 1, current 2, current 3, and current 4 shown in fig. 3, are connected, and each control input terminal is provided with a resistor, i.e., resistors R8, R9, R10, and R11.
Further, pin 1 is a CHRG (charge) pin: the pin is connected to the charging I/O port 4 of the main control circuit 101, and is used to output different logic levels to the main control circuit when charging or not charging. When in charging, the pin outputs a logic level 0; when fully charged or not charged, the output of the power amplifier is in a high impedance state, and the external port voltage is pulled up to the system working voltage 3.3V by R6, namely the pin outputs a logic level 1.
The charging management circuit 104 manages and protects the charging current of the lithium battery through a charging management chip, which is a home-made chip CE 3154.
For further explanation of the adapter unit 103 in fig. 1, fig. 4 shows a schematic circuit diagram of an adapter input circuit of the adapter unit 103 according to an embodiment of the present invention, and the circuit diagram is composed of an ac power supply, a chip U0, a resistor R4, capacitors C1, C3, and the like. The connection is shown in fig. 4. Fig. 5 shows a schematic circuit diagram of a voltage detection circuit of the adapter unit 103 according to an embodiment of the present invention, and the circuit diagram is composed of resistors R2, R3, R5, a capacitor C4, and the like. The connection is shown in fig. 5.
The adapter unit 103 includes an adapter input circuit and a voltage detection circuit connected to the adapter input circuit; the voltage detection circuit is also connected with the main control circuit 101;
the adapter input circuit is used for converting the electric signal input by the external power supply and inputting the converted electric signal to the charging management circuit so as to charge the lithium battery;
the voltage detection circuit is used for collecting the converted electric signals and transmitting the converted electric signals to the main control circuit 101, so that the main control circuit 101 detects the converted electric signals.
Further, in the schematic diagram of the circuit principle, the voltage detection circuit includes a voltage division circuit and a collection branch. One end of the acquisition branch is connected with the voltage division circuit, and the other end of the acquisition branch is connected with the main control circuit 101; in fig. 5, the resistor R2 and the resistor R5 are connected in series to form a voltage dividing circuit, the resistor R3 and the capacitor C4 form an acquisition branch, and the resistor R3 and the capacitor C4 also have a certain filtering function, specifically, the voltage dividing circuit is configured to process the acquired converted electrical signal, generate a voltage dividing signal, and transmit the voltage dividing signal to the main control circuit 101 through the acquisition branch, so that the main control circuit 101 detects the converted electrical signal according to the signal.
Specifically, the acquisition branch circuit is configured to acquire an electrical signal converted by the adapter input circuit, the voltage detection circuit divides the acquired converted electrical signal by resistors R2 and R5, inputs the divided voltage V1 to the ADC module of the main control circuit 101 through the voltage V1 of the main control circuit 101, and detects the voltage V1 of the main control circuit 101, and obtains a change of the output voltage of the voltage detection circuit (the change of the voltage V1 is synchronous, that is, both changes are increased or decreased) by performing back-stepping by detecting whether the divided voltage V1 changes, and feeds back the voltage through the main control circuit 101 in time.
Wherein, the embodiment of the utility model provides an in bleeder circuit be the bleeder circuit that establishes ties, the partial pressure principle of series connection bleeder circuit does: the currents on the resistors are equal, and the sum of the voltages across the resistors is equal to the total voltage of the circuit. It can be seen that the voltage across each resistor is less than the total voltage of the circuit, so the series resistors divide the voltage.
For further explanation of the charging control device in fig. 1, fig. 6 shows a schematic circuit diagram of a power conversion power supply circuit provided in an embodiment of the present invention, where the circuit diagram is composed of chips U3, U5, resistors R12, R13, capacitors C5, C6, C7, C10, C11, C12, diodes D2, D3, and other devices. The connection is shown in fig. 6.
The charging control device further includes a power conversion power supply circuit, and the power conversion power supply circuit is used for supplying power to the main control circuit 101 and the charging module 102.
The power supply conversion power supply circuit comprises a voltage stabilizing circuit and a first power supply branch circuit connected with the voltage stabilizing circuit; the first power supply branch circuit is used for acquiring the converted electric signal and inputting the converted electric signal to the voltage stabilizing circuit; the voltage stabilizing circuit is used for performing voltage stabilizing processing on the converted electric signal so as to supply power to the main control circuit 101 and the charging module 102.
Meanwhile, the power supply conversion power supply circuit also comprises a second power supply branch circuit connected with the voltage stabilizing circuit; the second power supply branch is connected with the lithium battery and used for acquiring an output electric signal of the lithium battery when the lithium battery discharges and transmitting the output electric signal to the voltage stabilizing circuit;
wherein, U3 is a DC boost chip; u5 is a DC voltage stabilization chip; the voltage of the lithium battery is gradually reduced from 4.2V in the discharging process until the voltage is reduced to 2.75V, so that the lithium battery does not discharge, and a consumer is reminded that the electricity is used up and needs to be charged; because the working system needs stable working voltage of 3.3V, the battery voltage needs to be boosted, namely the input voltage is 2.75V-4.2V, the battery voltage is controlled by U3 to be converted and output 5V, and then the battery voltage is reduced by U5 to output stable 3.3V.
Furthermore, the embodiment of the utility model provides an in power supply conversion supply circuit utilize voltage stabilizing circuit's direct current voltage stabilizing chip to come to adjust the output voltage of first power supply branch road and second power supply branch road to make this output voltage stable, provide the basis for carrying out steady power supply to main control circuit 101 and charging module 102.
The voltage stabilizing circuit can still stabilize the output voltage under the condition that the input voltage, the load, the ambient temperature, the circuit parameters and the like are changed. The voltage stabilizing circuit can provide a stable direct current power supply and is adopted by various electronic equipment.
In order to manage and protect the output electrical signal of the lithium battery, fig. 7 shows a schematic circuit diagram of a discharge management circuit provided by an embodiment of the present invention, and the circuit diagram is composed of devices such as a chip U1, a resistor R1, a capacitor C2, and a battery BAT 1. The connection is shown in fig. 7.
The discharge management circuit comprises a discharge management chip U1; the discharging management circuit is connected with the lithium battery, and the discharging management chip U1 is used for acquiring the output electric signal of the lithium battery when the lithium battery discharges and stopping the discharging process of the lithium battery when the output electric signal is lower than a preset discharging threshold value.
The embodiment of the utility model provides an in discharge management chip U1 adopt at present usually that domestic chip XB5353A, it has advantages such as management function is powerful, with low costs, easy operation.
For further explanation of the charging control device in fig. 1, fig. 8 shows a schematic circuit diagram of a display control circuit according to an embodiment of the present invention, where the circuit diagram is composed of resistors R16, R17, light emitting diodes LED1, and ED 2. The connection is shown in fig. 8.
The device also comprises a display control circuit, wherein the display control circuit comprises a plurality of connected display branches, and each display branch is connected with the main control circuit 101; each display branch comprises an indicator light for displaying the working state of the charging control device under the control of the main control circuit 101.
The indicator light is usually an LED light. The output circuits of the light emitting diodes LED1 and LED2 of the display control device are connected with the LED lamp I/O ports 1 and 2 of the main control circuit 101, and the main control circuit 101 controls the LED lamp I/O ports 1 and 2 to indicate the running state of the whole charging control device:
the LED1 indicates the power: when the power is on, the lamp is bright, and when the power is off, the lamp flickers.
The light emitting diode LED2 indicates the mode: flashing when suspended; the corresponding mode lamp is on for a long time when the lamp runs.
When the main control circuit 101 feeds back the collected converted electrical signal to be low, the light emitting diodes LED1 and LED2 flash, and when the main control circuit 101 feeds back the collected converted electrical signal to be normal, the light emitting diodes LED1 and LED2 return to be long and bright.
In addition, the main control circuit 101 comprises a main control chip U4, and the main control chip U4 is provided with an ADC module and a plurality of I/O ports; each control output 105 corresponds to an I/O port to output a control signal.
The ADC module is used for detecting an output signal of the voltage detection circuit to monitor the change of the output signal, feeding back the output signal in time through the main control circuit 101 and performing self-adaptive adjustment on the lithium battery charging circuit; the plurality of I/O ports are used to connect to respective other parts of the charge control device to control the same.
In order to further understand the operation principle of the charging control device, fig. 9 shows a block diagram of the operation principle of the charging control device according to an embodiment of the present invention.
As shown in fig. 9, the charge control device operates on the following principle:
(1) the power adapter is connected as power input (a plurality of external devices such as external devices 1 and 2 can be charged simultaneously), the whole device is powered through the power conversion power supply circuit, the collected converted electric signals are synchronously detected through the I/O port of the main control circuit 101, the change of the output voltage of the voltage detection circuit is obtained by reversely deducing through detecting whether the collected converted electric signals change or not, and the output voltage is timely fed back to the main control circuit 101 through the I/O port.
(2) The main control circuit 101 firstly controls the resistor of the charging management circuit to be short-circuited to the ground, and allows a small current to flow through the PROG pin, so that the whole charging control device starts the charging function. The power input of the adapter power supply enters a charging management circuit for charging management (e.g., overvoltage protection, overcurrent protection, over-temperature protection, charging mode control, charging indication, etc.), and the charging current flowing into the lithium battery is controlled according to the feedback of the main control circuit 101.
(3) When the lithium battery discharges, a discharge management chip of the discharge management circuit manages the discharge (for example, under-voltage protection and over-current protection), acquires an output electric signal of the lithium battery, and stops the discharge process of the lithium battery when the output electric signal is lower than a preset discharge threshold.
(4) The main control circuit 101 indicates the operating state of the charging control device through the light emitting diodes LED1 and LED2 of the plurality of display branches of the display control circuit. When the collected converted electric signals are monitored in real time, the resistors of the charging management circuit are controlled to be short-circuited to the ground in different combinations, and the resistance to the ground of the PROG pin is changed to change the current flowing through the PROG pin, so that the charging current flowing into the lithium battery is changed; when the collected converted electric signal is found to be changed, the main controller applies an internal logic processing unit to carry out logic processing to change the current flowing through the PROG pin, so that the charging current flowing into the lithium battery is changed; if the collected converted electric signal fed back by the main control circuit 101 becomes low, the charging current is timely reduced through logic processing, and the charging control device is prevented from working abnormally, and at the moment, the light emitting diodes LED1 and LED2 flicker; on the contrary, if the main control circuit 101 feeds back the collected converted electrical signal to be recovered to normal, the charging current is timely increased by performing logic processing, so that the working efficiency of the charging control device is maximized, and at the moment, the light emitting diodes LED1 and LED2 recover to be long-bright.
In another possible implementation manner, corresponding to the charging control apparatus provided in the foregoing implementation manner, an embodiment of the present invention further provides a charging control system, and fig. 10 is a block diagram of a charging control system provided in an embodiment of the present invention. As shown in fig. 10, the system includes: a lithium battery 1002 further including the charge control device 1001;
the charge control device 1001 is connected to the lithium battery 1002 and manages a charge/discharge process of the lithium battery 1002.
Among them, the lithium battery 1002 is a device that directly converts chemical energy into electrical energy, and is a battery designed using a rechargeable principle. Generally, the lithium battery 1002 is classified into a lead-acid lithium battery, a lithium iron phosphate lithium battery, a lithium quinacre battery, and the like, wherein the lead-acid lithium battery is most commonly used.
The embodiment of the utility model provides a charge control system, the charge control device who provides with above-mentioned embodiment has the same technical characteristic, so also can solve the same technical problem, reaches the same technological effect.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the system described above may refer to the corresponding process in the foregoing embodiment of the apparatus, and is not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A charging control device is characterized by comprising a main control circuit and a charging module connected with the main control circuit;
the charging module comprises an adapter unit and a charging management circuit connected with the adapter unit, and the charging management circuit is also connected with the main control circuit and the lithium battery and is used for managing the charging process of the lithium battery when the adapter unit is connected with an external power supply;
the master control circuit comprises a plurality of control output ends, the charging management circuit comprises a plurality of control input ends, and one control output end corresponds to one control input end;
the main control circuit is used for sending a control signal to the control input end through the control output end when the lithium battery is charged so as to control the charging process of the lithium battery.
2. The apparatus of claim 1, wherein the charge management circuit comprises a charge management chip comprising an input terminal, an output terminal, and a control terminal;
the input end is connected with the adapter unit, and the output end is connected with the lithium battery;
and the control input ends are connected with the control ends, and the current corresponding to the control ends is changed according to the control signals so as to control the charging current of the lithium battery.
3. The apparatus of claim 1, wherein the adapter unit comprises an adapter input circuit and a voltage detection circuit connected to the adapter input circuit; the voltage detection circuit is also connected with the main control circuit;
the adapter input circuit is used for converting an electric signal input by the external power supply and inputting the converted electric signal to the charging management circuit so as to charge the lithium battery;
the voltage detection circuit is used for collecting the converted electric signals and transmitting the converted electric signals to the main control circuit, so that the main control circuit detects the converted electric signals.
4. The apparatus of claim 3, wherein the voltage detection circuit comprises a voltage divider circuit and a collection branch;
one end of the acquisition branch circuit is connected with the voltage division circuit, and the other end of the acquisition branch circuit is connected with the main control circuit;
the voltage division circuit is used for carrying out voltage division processing on the acquired converted electric signals to generate voltage division signals, and transmitting the voltage division signals to the main control circuit through the acquisition branch circuit, so that the main control circuit detects the converted electric signals according to the voltage division signals.
5. The apparatus of claim 3, further comprising a power conversion supply circuit; the power supply conversion power supply circuit is used for supplying power to the main control circuit and the charging module;
the power supply conversion power supply circuit comprises a voltage stabilizing circuit and a first power supply branch circuit connected with the voltage stabilizing circuit;
the first power supply branch circuit is used for acquiring the converted electric signal and inputting the converted electric signal to the voltage stabilizing circuit;
the voltage stabilizing circuit is used for performing voltage stabilizing processing on the converted electric signals so as to supply power to the main control circuit and the charging module.
6. The apparatus of claim 5, wherein the power conversion supply circuit further comprises a second power supply branch coupled to the voltage regulator circuit;
the second power supply branch circuit is connected with the lithium battery and used for acquiring an output electric signal of the lithium battery when the lithium battery discharges and transmitting the output electric signal to the voltage stabilizing circuit;
the voltage stabilizing circuit is used for carrying out voltage stabilizing processing on the output electric signal so as to supply power to the main control circuit and the charging module.
7. The apparatus of claim 6, further comprising a discharge management circuit comprising a discharge management chip;
the lithium battery is connected with the discharge management circuit, the discharge management chip is used for acquiring the output electric signal of the lithium battery when the lithium battery discharges, and stopping the discharge process of the lithium battery when the output electric signal is lower than a preset discharge threshold value.
8. The apparatus according to claim 1, further comprising a display control circuit, wherein the display control circuit comprises a plurality of connected display branches, and each display branch is connected with the main control circuit;
each display branch comprises an indicator light for displaying the working state of the charging control device under the control of the main control circuit.
9. The device of claim 1, wherein the master control circuit comprises a master control chip provided with an ADC module and a plurality of I/O ports;
each control output end corresponds to one I/O port to output the control signal.
10. A charge control system, characterized in that the charge control system comprises a lithium battery, and further comprises the charge control device of any one of claims 1 to 9;
the charging control device is connected with the lithium battery and used for managing the charging and discharging process of the lithium battery.
Priority Applications (1)
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| CN201921286088.2U CN210225002U (en) | 2019-08-08 | 2019-08-08 | Charging control device and system |
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| CN201921286088.2U CN210225002U (en) | 2019-08-08 | 2019-08-08 | Charging control device and system |
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| CN210225002U true CN210225002U (en) | 2020-03-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112290633A (en) * | 2020-10-28 | 2021-01-29 | 广东健奥科技有限公司 | Circuit and method for indicating power supply by using bicolor light-emitting diode and oximeter |
| CN113325184A (en) * | 2021-05-10 | 2021-08-31 | 棒糖科技(杭州)股份有限公司 | Multi-hormone detection equipment and method of movable sensing acquisition system |
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2019
- 2019-08-08 CN CN201921286088.2U patent/CN210225002U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112290633A (en) * | 2020-10-28 | 2021-01-29 | 广东健奥科技有限公司 | Circuit and method for indicating power supply by using bicolor light-emitting diode and oximeter |
| CN112290633B (en) * | 2020-10-28 | 2024-03-26 | 广东健奥科技有限公司 | Circuit and method for indicating power supply by using double-color light-emitting diode and oximeter |
| CN113325184A (en) * | 2021-05-10 | 2021-08-31 | 棒糖科技(杭州)股份有限公司 | Multi-hormone detection equipment and method of movable sensing acquisition system |
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