CN213585266U - Lithium ion battery charging circuit - Google Patents
Lithium ion battery charging circuit Download PDFInfo
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- CN213585266U CN213585266U CN202022472302.2U CN202022472302U CN213585266U CN 213585266 U CN213585266 U CN 213585266U CN 202022472302 U CN202022472302 U CN 202022472302U CN 213585266 U CN213585266 U CN 213585266U
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- normally closed
- triode
- charging circuit
- closed connector
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Abstract
The utility model discloses a lithium ion battery charging circuit, including solar panel, triode V1, diode D5, normally closed connector K and lithium cell E, triode V1 and resistance R2 are connected to solar panel's voltage output end, and diode D5's negative pole and resistance R3 are connected to resistance R2's the other end, and triode V1's base is connected to diode D5's positive pole, and diode D1's negative pole, diode D2's negative pole and normally closed connector K's pin 2 are connected to triode V1's projecting pole. The utility model discloses lithium ion battery charging circuit adopts the solar energy power supply, and has the under-voltage charging protect function, and the person of facilitating the use uses in the open air to the function of automatic power off has been realized to the combination that utilizes a normally closed connector and zener diode, effectively protects the safety of lithium cell.
Description
Technical Field
The utility model relates to a charger technical field specifically is a lithium ion battery charging circuit.
Background
A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. Lithium metal batteries were first proposed and studied by Gilbert n. Lewis in 1912. In the 70 s of the 20 th century, m.s. Whittingham proposed and began to study lithium ion batteries. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. With the development of scientific technology, lithium batteries have become the mainstream.
The existing lithium battery charging device has single function or complex structure, and cannot provide a safe charger which can be used outdoors under the condition of lower cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lithium ion battery charging circuit to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a lithium ion battery charging circuit comprises a solar panel, a triode V1, a diode D5, a normally closed connector K and a lithium battery E, wherein a voltage output end of the solar panel is connected with a triode V1 and a resistor R2, the other end of the resistor R2 is connected with a cathode of a diode D5 and a resistor R3, an anode of the diode D5 is connected with a base electrode of a triode V1, an emitter of the triode V1 is connected with a cathode of a diode D1, a cathode of a diode D2 and a pin 2 of the normally closed connector K, a pin 4 of the normally closed connector K is connected with an inductor L1 and a capacitor C1, an anode of the diode D1 is connected with a pin 1 of the normally closed connector K, the other end of the inductor L1 is connected with an anode of a diode D4 and an anode of a diode D3, a cathode of the diode D4 is connected with an anode of the lithium battery E, and the other end of the capacitor C1 is connected with an, Solar panel, resistor R3 and the negative pole of lithium battery E.
As a further technical solution of the present invention: the diode D1 and the diode D5 are zener diodes.
As a further technical solution of the present invention: the diode D4 is a rectifier diode.
As a further technical solution of the present invention: the diode D3 is a light emitting diode.
As a further technical solution of the present invention: the normally closed connector K is of the type KAF12V 25.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses lithium ion battery charging circuit adopts the solar energy power supply, and has the under-voltage charging protect function, and the person of facilitating the use uses in the open air to the function of automatic power off has been realized to the combination that utilizes a normally closed connector and zener diode, effectively protects the safety of lithium cell.
Drawings
Fig. 1 is a circuit diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a charging circuit for a lithium ion battery includes a solar panel, a transistor V1, a diode D5, a normally closed connector K, and a lithium ion battery E, wherein a voltage output terminal of the solar panel is connected to the transistor V1 and a resistor R2, the other end of the resistor R2 is connected to a cathode of the diode D5 and a resistor R3, an anode of the diode D5 is connected to a base of the transistor V1, an emitter of the transistor V1 is connected to a cathode of the diode D1, a cathode of the diode D2 and a pin 2 of the normally closed connector K, a pin 4 of the normally closed connector K is connected to the inductor L1 and the capacitor C1, an anode of the diode D1 is connected to a pin 1 of the normally closed connector K, the other end of the inductor L1 is connected to an anode of the diode D4 and an anode of the diode D3, a cathode of the diode D4 is connected to an anode of the lithium ion battery E, and the other end of the capacitor C573, Solar panel, resistor R3 and the negative pole of lithium battery E. The diode D1 and the diode D5 are zener diodes. The diode D4 is a rectifier diode. The diode D3 is a light emitting diode. The normally closed connector K is model KAF12V 25.
The working principle is as follows: the voltage output by the solar panel firstly passes through an undervoltage protection module composed of an audion V1, a diode D5 and other elements, when the output voltage of the solar panel is subjected to voltage division through resistors R2 and R3 and can meet the reverse breakdown voltage of a voltage stabilizing diode D5, an audion V1 is conducted, a circuit behind the solar panel can obtain the voltage to charge, a pin 2 of a normally closed connector K and a pin 4 of a normally closed connector K are connected, the output voltage of the solar panel charges a lithium battery E through the pin 2 of the normally closed connector K, the pin 4 of the normally closed connector K, an inductor L and a diode D2, the voltage of the lithium battery E is continuously increased along with the charging, when the voltage is increased to a critical value of a fully charged state, the voltage stabilizing diode D1 is conducted in reverse breakdown, and the pin 2 of the normally closed connector K and the pin 4 of the normally closed connector K are disconnected at the moment, so that the.
In embodiment 2, based on embodiment 1, the solar panel T may be a single crystal silicon panel, which has a small volume and high photoelectric conversion efficiency.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A charging circuit of a lithium ion battery comprises a solar panel, a triode V1, a diode D5, a normally closed connector K and a lithium battery E, and is characterized in that a voltage output end of the solar panel is connected with a triode V1 and a resistor R2, the other end of the resistor R2 is connected with a cathode of a diode D5 and a resistor R3, an anode of a diode D5 is connected with a base of a triode V1, an emitter of the triode V1 is connected with a cathode of a diode D1, a cathode of a diode D2 and a pin 2 of the normally closed connector K, a pin 4 of the normally closed connector K is connected with an inductor L1 and a capacitor C1, an anode of a diode D1 is connected with a pin 1 of the normally closed connector K, the other end of the inductor L1 is connected with an anode of a diode D4 and an anode of a diode D3, a cathode of the diode D4 is connected with an anode of the lithium battery E, and the other end of a capacitor C1 is connected with, Solar panel, resistor R3 and the negative pole of lithium battery E.
2. The charging circuit of claim 1, wherein the diodes D1 and D5 are zener diodes.
3. The charging circuit of claim 1, wherein the diode D4 is a rectifier diode.
4. The charging circuit of claim 1, wherein the diode D3 is a light emitting diode.
5. The charging circuit of any of claims 1 to 4, wherein the normally closed connector K is of the type KAF12V 25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022472302.2U CN213585266U (en) | 2020-10-31 | 2020-10-31 | Lithium ion battery charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022472302.2U CN213585266U (en) | 2020-10-31 | 2020-10-31 | Lithium ion battery charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213585266U true CN213585266U (en) | 2021-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022472302.2U Active CN213585266U (en) | 2020-10-31 | 2020-10-31 | Lithium ion battery charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213585266U (en) |
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2020
- 2020-10-31 CN CN202022472302.2U patent/CN213585266U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A lithium ion battery charging circuit Effective date of registration: 20220705 Granted publication date: 20210629 Pledgee: Bank of China Limited Wuzhou branch Pledgor: Yashi power (Guangxi) Co.,Ltd. Registration number: Y2022450000110 |