Charger voltage stabilizing circuit

Abstract

The utility model belongs to the technical field of chargers, and discloses a charger voltage stabilizing circuit which comprises a voltage stabilizing diode ZD1, the negative electrode of the voltage stabilizing diode ZD1 is connected with an output end VOUT +, the positive electrode of the voltage stabilizing diode ZD1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with a pin 1 of an optical isolation controller U1 and one end of a resistor R2, and the other end of the resistor R2 is connected with a pin 2 of an optical isolation controller U1. The other end of the resistor R2 is connected with a pin 2 of the optical isolation controller U1 and connected with one end of a resistor R3, a pin 2 of the controllable precise voltage stabilization source U2 and one end of a resistor R4, the other end of the resistor R3 is connected with one end of a capacitor C1, the other end of the capacitor C1 is connected with one end of a resistor R5, one end of a resistor R6 and one end of a resistor R7 and connected with a pin 1 of the controllable precise voltage stabilization source, and the other end of the resistor R5 is connected with a power supply V1. A pin 3 of the slide rheostat VR1 is connected with the other end of the resistor R6 and a pin 3 of the controllable precision voltage stabilization source U2 and is connected with a negative electrode connection output end VOUT-of a ground diode D1; according to the utility model, the stability and reliability of receiving electric energy input by the lithium battery are improved.

Description

Technical Field

[0001] This utility model belongs to the field of charger technology, and in particular relates to a charger voltage regulator circuit. Background Technology

[0002] A lithium battery is a primary battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. It differs from rechargeable lithium-ion batteries and lithium-ion polymer batteries. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use require very strict environmental control. In real-world use, when charging lithium batteries, occasional instability in the charger's output voltage can affect the battery's lifespan, and in severe cases, even burn out the battery. Utility Model Content

[0003] Therefore, this utility model provides a charger voltage regulator circuit, which aims to improve the stability of the output voltage of a lithium battery charger.

[0004] To achieve the above-mentioned objectives of this utility model, the technical solution adopted is as follows:

[0005] A charger voltage regulator circuit includes a Zener diode ZD1. The negative terminal of the Zener diode ZD1 is connected to the output terminal VOUT+. The positive terminal of the Zener diode ZD1 is connected to one end of a resistor R1. The other end of the resistor R1 is connected to pin 1 of an opto-isolation controller U1 and one end of a resistor R2. The other end of the resistor R2 is connected to pin 2 of the opto-isolation controller U1 and one end of a resistor R3, pin 2 of a controllable precision voltage regulator U2, and one end of a resistor R4. The other end of the resistor R3 is connected to one end of a capacitor C1. One end of capacitor C1 is connected to one end of resistors R5, R6 and R7 and to pin 1 of the controllable precision voltage regulator. The other end of resistor R5 is connected to power supply V1. The other end of resistor R7 is connected to pin 1 of sliding rheostat VR1. Pin 3 of sliding rheostat VR1 is connected to the other end of resistor R6 and pin 3 of the controllable precision voltage regulator U2 and is connected to ground. The other end of resistor R4 is connected to the positive terminal of diode D1. The negative terminal of diode D1 is connected to the output terminal VOUT-.

[0006] The present invention is further configured such that the optical isolation controller U1 is a PC817C optical isolation controller.

[0007] The present invention is further configured such that the voltage regulation value of the Zener diode ZD1 is 12V.

[0008] The present invention is further configured such that the maximum resistance of the sliding rheostat VR1 is 10K.

[0009] The present invention is further configured such that the resistance of resistor R1 is 1K.

[0010] The present invention is further configured such that the resistance of resistor R2 is 3KΩ.

[0011] The present invention is further configured such that the resistance of resistor R3 is 10K.

[0012] The present invention is further configured such that the resistance of resistor R4 is 120R.

[0013] The present invention is further configured such that the resistance of resistor R5 is 91KΩ and the resistance of resistor R6 is 18KΩ.

[0014] The present invention is further configured such that the resistance of resistor R7 is 43KΩ.

[0015] In summary, compared with the prior art, this utility model discloses a charger voltage regulator circuit. Through the setting and cooperation of components such as the Zener diode ZD1 and the controllable precision voltage regulator U2, the unstable voltage after the rectifier circuit and the filter circuit can be output as a stable value of 12V, thereby improving the stability and reliability of the lithium battery receiving electrical energy input. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a circuit connection diagram of a charger voltage regulator circuit provided in this embodiment;

[0018] Figure 2 This is a schematic diagram of the charging and control principle of the charger provided in this embodiment. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be 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 for explaining the present utility model and are not intended to limit the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Furthermore, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

[0023] A charger voltage regulator circuit includes a Zener diode ZD1. The negative terminal of the Zener diode ZD1 is connected to the output terminal VOUT+. The positive terminal of the Zener diode ZD1 is connected to one end of a resistor R1. The other end of the resistor R1 is connected to pin 1 of an opto-isolation controller U1 and one end of a resistor R2. The other end of the resistor R2 is connected to pin 2 of the opto-isolation controller U1 and one end of a resistor R3, pin 2 of a controllable precision voltage regulator U2, and one end of a resistor R4. The other end of the resistor R3 is connected to one end of a capacitor C1. One end of capacitor C1 is connected to one end of resistors R5, R6 and R7 and to pin 1 of the controllable precision voltage regulator. The other end of resistor R5 is connected to power supply V1. The other end of resistor R7 is connected to pin 1 of sliding rheostat VR1. Pin 3 of sliding rheostat VR1 is connected to the other end of resistor R6 and pin 3 of the controllable precision voltage regulator U2 and is connected to ground. The other end of resistor R4 is connected to the positive terminal of diode D1. The negative terminal of diode D1 is connected to the output terminal VOUT-.

[0024] In this embodiment, the optical isolation controller U1 is a PC817C optical isolation controller.

[0025] In practical implementation, the optical isolation controller U1 can separate the high-level area from the low-level area in the charger circuit, thereby improving the safety and reliability of the entire charger circuit.

[0026] It should be noted that in some embodiments, the model of the optical isolation controller U1 can be selectively set according to the actual situation, and no specific limitation is made here.

[0027] In this embodiment, the Zener diode ZD1 has a Zener voltage of 12V.

[0028] In this embodiment, the maximum resistance of the sliding rheostat VR1 is 10K.

[0029] In practical implementation, the sliding rheostat VR1 can be set to allow for flexible selection of other resistance values, while ensuring the high sensitivity of this voltage regulator circuit.

[0030] In this embodiment, the resistance of resistor R1 is 1K.

[0031] In this embodiment, the resistance of resistor R2 is 3K.

[0032] In this embodiment, the resistance of resistor R3 is 10K.

[0033] In this embodiment, the resistance of resistor R4 is 120R.

[0034] In this embodiment, the resistance of resistor R5 is 91KΩ and the resistance of resistor R6 is 18KΩ.

[0035] In this embodiment, the resistance of resistor R7 is 43K.

[0036] It should be noted that in some embodiments, the resistance values ​​of resistors R1, R2, R3, R4, R5, R6, and R7 can be selectively set according to actual conditions, and no specific limitation is made here.

[0037] It should be noted that, through the arrangement and cooperation of components such as Zener diode ZD1 and controllable precision voltage regulator U2, this embodiment can output an unstable voltage of 12V after passing through the rectifier circuit and filter circuit, thereby improving the stability and reliability of the lithium battery receiving power input.

[0038] In addition, this embodiment also provides a charging and control principle diagram of the charger, such as... Figure 2 As shown.

[0039] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A charger voltage regulator circuit, comprising a Zener diode ZD1, characterized in that: The negative terminal of the Zener diode ZD1 is connected to the output terminal VOUT+. The positive terminal of the Zener diode ZD1 is connected to one end of resistor R1. The other end of resistor R1 is connected to pin 1 of the opto-isolation controller U1 and one end of resistor R2. The other end of resistor R2 is connected to pin 2 of the opto-isolation controller U1 and to one end of resistor R3, pin 2 of the controllable precision voltage regulator U2, and one end of resistor R4. The other end of resistor R3 is connected to one end of capacitor C1. The other end of capacitor C1 is connected to one end of resistors R5, R6, and R7 and to pin 1 of the controllable precision voltage regulator. The other end of resistor R5 is connected to power supply V1. The other end of resistor R7 is connected to pin 1 of the sliding rheostat VR1. Pin 3 of the sliding rheostat VR1 is connected to the other end of resistor R6 and pin 3 of the controllable precision voltage regulator U2 and connected to ground. The other end of resistor R4 is connected to the positive terminal of diode D1. The negative terminal of diode D1 is connected to the output terminal VOUT-.

2. The charger voltage regulator circuit as described in claim 1, characterized in that, The optical isolation controller U1 is a PC817C optical isolation controller.

3. The charger voltage regulator circuit as described in claim 1, characterized in that, The Zener diode ZD1 has a Zener voltage of 12V.

4. The charger voltage regulator circuit as described in claim 2 or 3, characterized in that, The maximum resistance of the sliding rheostat VR1 is 10K.

5. The charger voltage regulator circuit according to any one of claims 1 to 3, characterized in that, The resistance of resistor R1 is 1K.

6. The charger voltage regulator circuit according to any one of claims 1 to 3, characterized in that, The resistance of resistor R2 is 3K.

7. The charger voltage regulator circuit as described in claim 1, characterized in that, The resistance of resistor R3 is 10K.

8. The charger voltage regulator circuit as described in claim 1, characterized in that, The resistance of resistor R4 is 120Ω.

9. The charger voltage regulator circuit as described in claim 1, characterized in that, The resistance of resistor R5 is 91KΩ, and the resistance of resistor R6 is 18KΩ.

10. The charger voltage regulator circuit according to any one of claims 7 to 9, characterized in that, The resistance of resistor R7 is 43KΩ.

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