CN210327061U - Lithium battery charger circuit control system - Google Patents
Lithium battery charger circuit control system Download PDFInfo
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- CN210327061U CN210327061U CN201920887135.2U CN201920887135U CN210327061U CN 210327061 U CN210327061 U CN 210327061U CN 201920887135 U CN201920887135 U CN 201920887135U CN 210327061 U CN210327061 U CN 210327061U
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Abstract
The utility model relates to a lithium battery charger circuit control system, including step-down module and host system, host system including detecting lithium battery voltage's detecting element, comparison chip U4, LED lamp and optoelectronic coupler U2, comparison chip U4 connect detecting element, LED lamp and optoelectronic coupler U2 respectively and connect, the LED lamp include red LED lamp R and green LED lamp G, host system constitute by first comparison circuit, second comparison circuit, third circuit and fourth comparison circuit, first comparison circuit, second comparison circuit, third circuit and fourth comparison circuit parallelly connected, this kind of lithium battery charger circuit control system control's lithium battery charger can be when lithium battery voltage electric quantity is low, can charge the lithium cell fast, can slowly charge when voltage electric quantity is sufficient.
Description
Technical Field
The utility model relates to a charging path control system technical field especially relates to a lithium battery charger circuit control system.
Background
Lithium battery chargers are chargers that are used exclusively to charge lithium ion batteries. Lithium ion battery is higher to the requirement of charger, need protection circuit, so lithium battery charger all has higher control precision usually, can carry out constant current constant voltage charging to lithium ion battery, it is the ordinary charger after the step-down generally to drive lithium battery charger on the market, can only charge to the lithium cell with stable current input, charging speed is slow, when the electronic equipment low in electric quantity that people used needs to charge, however, do not have sufficient time again and wait for the lithium cell to be slowly full of, consequently, often the electric quantity of charging is not enough, cause the not enough condition of electric quantity in the use in later stage.
SUMMERY OF THE UTILITY MODEL
To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a lithium battery charger circuit control system is provided, this kind of lithium battery charger circuit control system control's lithium battery charger can be when lithium cell voltage electric quantity is low, can slowly charge to the lithium cell when voltage electric quantity is sufficient.
The utility model provides a technical scheme that above-mentioned technical problem adopted does:
the utility model provides a lithium battery charger circuit control system, includes step-down module and host system, the step-down module connect host system, host system including detecting lithium battery voltage's detecting element, comparison chip U4, LED lamp and optoelectronic coupler U2, comparison chip U4 connect detecting element, LED lamp and optoelectronic coupler U2 respectively and connect, the LED lamp include red LED lamp R and green LED lamp G, host system constitute by first comparison circuit, second comparison circuit, third circuit and fourth comparison circuit, first comparison circuit, second comparison circuit, third circuit and fourth comparison circuit parallelly connected.
Furthermore, the first comparison circuit is formed by connecting a detection element, a comparison chip U4 and a photoelectric coupler U2 in series, so that the difference between the voltage inside the lithium battery and the voltage outside the charger controlled by the circuit control system of the lithium battery charger can be detected through the comparison chip U4.
Furthermore, the second comparison circuit is formed by connecting a detection element, a comparison chip U4, a red LED lamp R and an output end in series. Therefore, the lithium battery is rapidly charged through the voltage difference obtained by the comparison circuit.
Furthermore, the third comparison circuit is formed by connecting a detection element, a comparison chip U4, a green LED lamp and an output end in series. Therefore, the lithium battery is slowly charged through the voltage difference obtained by the comparison circuit.
Furthermore, the fourth comparison circuit is formed by connecting the detection element, the comparison chip U4, the photoelectric coupler U2 and the output end in series. Therefore, the lithium battery is disconnected and stopped to be charged through the voltage difference obtained by the comparison circuit.
Further, the step-down module comprises a bridge stack, a transformer T1, a chip control voltage element U1 and a rectification output end, wherein one end of the bridge stack is connected with a power supply, the other end of the bridge stack is connected with a transformer T1, the transformer T1 is connected with the chip control voltage element U1 in parallel, the transformer T1 is connected with the rectification output end, and the output end is connected with the step-down module. The charger controlled by the lithium battery charger circuit control system converts the accessed alternating current into direct current and reduces the voltage through the voltage reduction module.
Compared with the prior art, the utility model has the advantages of:
the utility model relates to a lithium battery charger circuit control system, including step-down module and host system, host system including detecting lithium battery voltage's detecting element, comparison chip U4, LED lamp and optoelectronic coupler U2, comparison chip U4 connect detecting element, LED lamp and optoelectronic coupler U2 respectively and connect, the LED lamp include red LED lamp R and green LED lamp G, host system constitute by first comparison circuit, second comparison circuit, third circuit and fourth comparison circuit, first comparison circuit, second comparison circuit, third circuit and fourth comparison circuit parallelly connected, this kind of lithium battery charger circuit control system control's lithium battery charger can be when lithium battery voltage electric quantity is low, can charge the lithium cell fast, can slowly charge when voltage electric quantity is sufficient.
Drawings
Fig. 1 is an overall circuit diagram of the present invention;
fig. 2 is a specific circuit diagram of the voltage reduction module of the present invention;
fig. 3 is a specific circuit diagram of the main control module of the present invention.
Detailed Description
As shown in fig. 1 and 2, a lithium battery charger circuit control system comprises a voltage reduction module and a main control module, wherein the voltage reduction module is connected with the main control module, the main control module comprises a detection element for detecting the voltage of a lithium battery, a comparison chip U4, an LED lamp and a photoelectric coupler U2, the comparison chip U4 is respectively connected with the detection element, the LED lamp and the photoelectric coupler U2, the LED lamp comprises a red LED lamp R and a green LED lamp G, the main control module comprises a first comparison circuit, a second comparison circuit, a third circuit and a fourth comparison circuit, the first comparison circuit, the second comparison circuit, the third circuit and the fourth comparison circuit are connected in parallel, the first comparison circuit comprises the detection element, the comparison chip U4 and the photoelectric coupler U2 which are connected in series, and the second comparison circuit comprises the detection element, the comparison chip U4, the photoelectric coupler U2, and the detection element, Red LED lamp R and output series connection constitute, third comparison circuit constitute by detecting element, comparison chip U4, green LED lamp and output series connection, fourth comparison circuit owing to detecting element, comparison chip U4, photoelectric coupler U2 and output series connection constitute, the step-down module include bridge heap, transformer T1, chip control voltage component and rectification output, bridge heap one end connect the power, transformer T1 is connected to the other end, transformer T1 and chip control voltage component U1 connect in parallel, transformer T1 and rectification output be connected, the output with the step-down module connect.
When the circuit control system of the lithium battery charger is operated, a battery is placed in the charger controlled by the circuit control system of the lithium battery charger and is connected with a power supply for charging, the power supply converts alternating current into direct current through a bridge stack of the voltage reduction module, voltage is detected through a chip control voltage element, then high voltage is converted into low voltage of the charger controlled by the circuit control system of the lithium battery charger through a transformer T1, finally low voltage current is output through a rectification output end, at the moment, the current enters a main control module, the voltage reduction module is connected with the main control module, a detection voltage element of the main control module is connected with two ends of the lithium battery and transmits the detected voltage to a comparison chip U4, the lithium battery is connected with a detection voltage element, and the detection voltage element is connected with a first comparison circuit to form a circuit for detecting the internal voltage of the lithium battery, when the detected battery voltage is lower than 2V, the comparison chip U4 carries out comparison, the second comparison circuit carries out quick charging on the lithium battery, the red LED lamp R is on, when the battery voltage is detected to be more than or equal to 2V and less than 30V, the comparison chip U4 carries out comparison, the third comparison circuit carries out slow charging on the lithium battery, the green LED lamp G is on, when the battery voltage is detected to be more than or equal to 30V, the comparison chip U4 carries out comparison, and the fourth comparison circuit carries out continuous charging protection on the lithium battery by grounding disconnection of the lithium battery.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (6)
1. The utility model provides a lithium battery charger circuit control system, its characterized in that, includes step-down module and host system, the step-down module connect host system, host system including detecting lithium battery voltage's detecting element, comparison chip U4, LED lamp and optoelectronic coupler U2, comparison chip U4 connect detecting element, LED lamp and optoelectronic coupler U2 respectively and connect, the LED lamp include red LED lamp R and green LED lamp G, host system constitute by first comparison circuit, second comparison circuit, third circuit and fourth comparison circuit, first comparison circuit, second comparison circuit, third circuit and fourth comparison circuit parallelly connected.
2. The lithium battery charger circuit control system of claim 1, wherein the first comparison circuit is formed by connecting a detection element, a comparison chip U4 and a photoelectric coupler U2 in series.
3. The lithium battery charger circuit control system of claim 2, wherein the second comparison circuit is formed by connecting a detection element, a comparison chip U4, a red LED lamp R and an output end in series.
4. The lithium battery charger circuit control system of claim 3, wherein the third comparison circuit is composed of a detection element, a comparison chip U4, a green LED lamp G and an output end connected in series.
5. The lithium battery charger circuit control system of claim 4, wherein the fourth comparison circuit is formed by connecting the detection element, the comparison chip U4, the photoelectric coupler U2 and the output end in series.
6. The lithium battery charger circuit control system of claim 1, wherein the voltage reduction module comprises a bridge stack, a transformer T1, a chip control voltage element U1, and a rectification output terminal, wherein one end of the bridge stack is connected to a power supply, the other end of the bridge stack is connected to a transformer T1, the transformer T1 is connected in parallel with the chip control voltage element U1, the transformer T1 is connected to the rectification output terminal, and the output terminal is connected to the voltage reduction module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920887135.2U CN210327061U (en) | 2019-06-13 | 2019-06-13 | Lithium battery charger circuit control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920887135.2U CN210327061U (en) | 2019-06-13 | 2019-06-13 | Lithium battery charger circuit control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210327061U true CN210327061U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920887135.2U Active CN210327061U (en) | 2019-06-13 | 2019-06-13 | Lithium battery charger circuit control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210327061U (en) |
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2019
- 2019-06-13 CN CN201920887135.2U patent/CN210327061U/en active Active
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