CN216904326U - Battery charging control circuit - Google Patents
Battery charging control circuit Download PDFInfo
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- CN216904326U CN216904326U CN202122639421.7U CN202122639421U CN216904326U CN 216904326 U CN216904326 U CN 216904326U CN 202122639421 U CN202122639421 U CN 202122639421U CN 216904326 U CN216904326 U CN 216904326U
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- battery
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- adapter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a battery charging control circuit, comprising: an adapter, a battery, and a charging circuit; the adapter is electrically connected with the charging circuit, the charging circuit is electrically connected with the battery, and the adapter charges the battery through the charging circuit; the charging circuit comprises a charging chip U1, a triode Q1, a resistor R10 and a resistor R4; pin 1, pin 20 and pin 6 of the charging chip U1 are all connected with the triode Q1, the triode Q1 is connected with the adapter, and pin 11 of the charging chip U1 is connected with the battery through a resistor R10 and a resistor R4. Thus, in the utility model, when the battery is charged, the battery can be prevented from being over-charged; when the battery is discharged, the battery can be prevented from being discharged in an overvoltage manner; the battery protection function is achieved, and the service life of the battery is prolonged.
Description
Technical Field
The utility model relates to the technical field of battery charging, in particular to a battery charging control circuit.
Background
The development of handheld intelligent mobile terminals and the increasing dependence on the handheld intelligent mobile terminals and the rapid pace of life force people to continuously pursue large-capacity batteries and the rapid recovery capability of the batteries after the electric quantity is exhausted.
In the prior art, the start or the end of the battery charging and discharging process is controlled manually in the battery charging and discharging process. On one hand, the battery is easy to be overcharged during the charging process; on the other hand, during the discharge of the battery, it is easy to cause the over-voltage discharge of the battery, thereby deteriorating the service life of the battery.
Therefore, it is an urgent problem to be solved by those skilled in the art how to design a battery charging control circuit.
SUMMERY OF THE UTILITY MODEL
The present invention provides a battery charging control circuit to solve the above problems in the prior art.
The technical problem to be solved by the utility model is realized by adopting the following technical scheme:
the embodiment of the utility model provides a battery charging control circuit, which comprises: an adapter, a battery, and a charging circuit;
the adapter is electrically connected with the charging circuit, the charging circuit is electrically connected with the battery, and the adapter charges the battery through the charging circuit;
the charging circuit comprises a charging chip U1, a triode Q1, a resistor R10 and a resistor R4;
the 1 pin, the 20 pin, the 6 pin of chip U1 that charges all with triode Q1 is connected, triode Q1 with the adapter is connected, chip U1's 11 pins that charge pass through resistance R10 resistance R4 with the battery is connected.
Optionally, in an embodiment of the present invention, the charging circuit further includes a resistor R13 and a capacitor C9;
a pin 10 of the charging chip U1 is connected to one end of the resistor R13 and one end of the capacitor C9, and a pin 6 of the charging chip U1, the other end of the resistor R13 and the other end of the capacitor C9 are all grounded;
the charging circuit further comprises a resistor R7 and a resistor R8;
the 13 pins of the charging chip U1 are connected with one end of the resistor R8, the other end of the resistor R8 and the 7 pins of the charging chip U1 are connected with one end of the resistor R7, and the other end of the resistor R7 is grounded.
Optionally, in an embodiment of the present invention, a discharge switch circuit is further included;
the adapter is electrically connected with the discharge switch circuit, and the discharge switch circuit is electrically connected with the battery;
the discharge switch circuit comprises a diode D1, a resistor R14, a switch S1, a resistor R17, a resistor R18, a triode Q4 and a triode Q5;
the anode of the diode D1 is connected to the adapter and the battery, the cathode of the diode D1 is connected to one end of the resistor R14 and the 3-pin of the transistor Q4, the other end of the resistor R14 is connected to one end of the switch S1 and the 1-pin of the transistor Q5, the other end of the switch S1 is connected to the 2-pin of the transistor Q5, the 3-pin of the transistor Q5 is connected to the electrical end of the resistor R17, the other end of the resistor R17 is connected to one end of the resistor R18, the other end of the resistor R18 is connected to the 1-pin of the transistor Q4, and the 2-pin of the transistor Q4 is connected to the output voltage Vout.
Optionally, in the embodiment of the present invention, the model of the charging chip U1 is set as LCT 4008.
The utility model has the advantages and positive effects that:
when the adapter is not connected, the discharging switch circuit is opened, the battery supplies power to the handheld terminal, wherein the handheld terminal is connected with the battery, the handheld terminal monitors the electric quantity state of the battery, and when the electric quantity of the battery is too low, the discharging switch circuit is closed by the handheld terminal to prevent the battery from being discharged in an overvoltage mode;
when the adapter is connected, the adapter supplies power for the charging circuit to make the charging circuit charge the battery, the discharge switch circuit is opened, the adapter supplies power for the handheld terminal, wherein the handheld terminal is connected with the battery, the handheld terminal monitors the electric quantity state of the battery, and when the battery is fully charged, the handheld terminal closes the charging circuit to stop charging the battery, so that the overcurrent charging of the battery is avoided.
Thus, in the utility model, when the battery is charged, the battery can be prevented from being over-charged; when the battery is discharged, the over-voltage discharge of the battery can be avoided; the battery protection function is achieved, and the service life of the battery is prolonged.
Drawings
FIG. 1 is a schematic diagram of the electrical connections of an adapter, battery, charging circuit and discharge switch circuit provided in the present invention;
FIG. 2 is a circuit diagram of a charging circuit provided by the present invention;
fig. 3 is a circuit diagram of a discharge switch circuit provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
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 invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The embodiments of the utility model will be described in further detail below with reference to the accompanying drawings:
the present invention provides a battery charging control circuit, as shown in fig. 1, including: an adapter, a battery, and a charging circuit;
the adapter is electrically connected with the charging circuit, the charging circuit is electrically connected with the battery, and the adapter charges the battery through the charging circuit;
the charging circuit comprises a charging chip U1, a triode Q1, a resistor R10 and a resistor R4;
the 1 pin, the 20 pin, the 6 pin of chip U1 that charges all with triode Q1 is connected, triode Q1 with the adapter is connected, chip U1's 11 pins that charge pass through resistance R10 resistance R4 with the battery is connected.
Thus, in the utility model, when the battery is charged, the battery can be prevented from being over-charged; when the battery is discharged, the over-voltage discharge of the battery can be avoided; the battery protection function is achieved, and the service life of the battery is prolonged.
Optionally, in the embodiment of the present invention, as shown in fig. 2, the charging circuit further includes a resistor R13 and a capacitor C9;
a pin 10 of the charging chip U1 is connected to one end of the resistor R13 and one end of the capacitor C9, and a pin 6 of the charging chip U1, the other end of the resistor R13 and the other end of the capacitor C9 are all grounded;
the charging circuit further comprises a resistor R7 and a resistor R8;
the 13 pins of the charging chip U1 are connected with one end of the resistor R8, the other end of the resistor R8 and the 7 pins of the charging chip U1 are connected with one end of the resistor R7, and the other end of the resistor R7 is grounded.
Optionally, in the embodiment of the present invention, as shown in fig. 3, a discharge switch circuit is further included;
the adapter is electrically connected with the discharge switch circuit, and the discharge switch circuit is electrically connected with the battery;
the discharge switch circuit comprises a diode D1, a resistor R14, a switch S1, a resistor R17, a resistor R18, a triode Q4 and a triode Q5;
the anode of the diode D1 is connected to the adapter and the battery, the cathode of the diode D1 is connected to one end of the resistor R14 and the 3-pin of the transistor Q4, the other end of the resistor R14 is connected to one end of the switch S1 and the 1-pin of the transistor Q5, the other end of the switch S1 is connected to the 2-pin of the transistor Q5, the 3-pin of the transistor Q5 is connected to the electrical end of the resistor R17, the other end of the resistor R17 is connected to one end of the resistor R18, the other end of the resistor R18 is connected to the 1-pin of the transistor Q4, and the 2-pin of the transistor Q4 is connected to the output voltage Vout.
It should be noted that the diode D1 is used to select the adapter to supply power to the handheld terminal or the battery to supply power to the handheld terminal, and specifically, after the adapter is connected, since the voltage of the adapter is greater than the voltage of the battery, the adapter supplies power to the handheld terminal; when the adapter is not connected, the battery supplies power to the handheld terminal.
Optionally, in the embodiment of the present invention, the model of the charging chip U1 is set as LCT 4008.
The working principle and the working process of the utility model are as follows:
when the adapter is not connected, the discharging switch circuit is opened, the battery supplies power to the handheld terminal, wherein the handheld terminal is connected with the battery, the handheld terminal monitors the electric quantity state of the battery, and when the electric quantity of the battery is too low, the discharging switch circuit is closed by the handheld terminal to prevent the battery from being discharged in an overvoltage mode;
when the adapter is connected, the adapter supplies power for the charging circuit to make the charging circuit charge the battery, the discharge switch circuit is opened, the adapter supplies power for the handheld terminal, wherein the handheld terminal is connected with the battery, the handheld terminal monitors the electric quantity state of the battery, and when the battery is fully charged, the handheld terminal closes the charging circuit to stop charging the battery, so that the overcurrent charging of the battery is avoided.
Thus, in the utility model, when the battery is charged, the battery can be prevented from being over-charged; when the battery is discharged, the over-voltage discharge of the battery can be avoided; the battery protection function is achieved, and the service life of the battery is prolonged.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but other embodiments derived from the technical solutions of the present invention by those skilled in the art are also within the scope of the present invention.
Claims (4)
1. A battery charge control circuit, comprising: an adapter, a battery, and a charging circuit;
the adapter is electrically connected with the charging circuit, the charging circuit is electrically connected with the battery, and the adapter charges the battery through the charging circuit;
the charging circuit comprises a charging chip U1, a triode Q1, a resistor R10 and a resistor R4;
the 1 pin, the 20 pin, the 6 pin of chip U1 that charges all with triode Q1 is connected, triode Q1 with the adapter is connected, chip U1's 11 pins that charge pass through resistance R10 resistance R4 with the battery is connected.
2. The battery charge control circuit of claim 1, wherein the charging circuit further comprises a resistor R13 and a capacitor C9;
a pin 10 of the charging chip U1 is connected to one end of the resistor R13 and one end of the capacitor C9, and a pin 6 of the charging chip U1, the other end of the resistor R13 and the other end of the capacitor C9 are all grounded;
the charging circuit further comprises a resistor R7 and a resistor R8;
the 13 pins of the charging chip U1 are connected with one end of the resistor R8, the other end of the resistor R8 and the 7 pins of the charging chip U1 are connected with one end of the resistor R7, and the other end of the resistor R7 is grounded.
3. The battery charge control circuit of claim 2, further comprising a discharge switch circuit;
the adapter is electrically connected with the discharge switch circuit, and the discharge switch circuit is electrically connected with the battery;
the discharge switch circuit comprises a diode D1, a resistor R14, a switch S1, a resistor R17, a resistor R18, a triode Q4 and a triode Q5;
the anode of the diode D1 is connected to the adapter and the battery, the cathode of the diode D1 is connected to one end of the resistor R14 and the 3-pin of the transistor Q4, the other end of the resistor R14 is connected to one end of the switch S1 and the 1-pin of the transistor Q5, the other end of the switch S1 is connected to the 2-pin of the transistor Q5, the 3-pin of the transistor Q5 is connected to the electrical end of the resistor R17, the other end of the resistor R17 is connected to one end of the resistor R18, the other end of the resistor R18 is connected to the 1-pin of the transistor Q4, and the 2-pin of the transistor Q4 is connected to the output voltage Vout.
4. The battery charging control circuit of claim 1, wherein the charging chip U1 is of the LCT4008 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122639421.7U CN216904326U (en) | 2021-10-29 | 2021-10-29 | Battery charging control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122639421.7U CN216904326U (en) | 2021-10-29 | 2021-10-29 | Battery charging control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216904326U true CN216904326U (en) | 2022-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122639421.7U Active CN216904326U (en) | 2021-10-29 | 2021-10-29 | Battery charging control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216904326U (en) |
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2021
- 2021-10-29 CN CN202122639421.7U patent/CN216904326U/en active Active
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