CN205377365U - Intelligent charging control circuit - Google Patents

Abstract

The utility model discloses an intelligent charging control circuit, including relay J, resistance R6, resistance R7, diode D, diode D3 and optical coupler U1, diode D4's positive pole and relay J's contact J -1 are connected to resistance R7's one end connecting resistance R5, resistance R6 and diode D1's negative pole, diode D1's positive pole, diode D4's negative pole connecting resistance R1, resistance R1's other end connection electric capacity C1, diode D5's positive pole, potentiometre RP1's a stiff end, loudspeaker B, relay J's contact J -1's the other end and loudspeaker B. The utility model discloses intelligent charging control circuit simple structure, components and parts are few, have charge mode selection, charged state instruction, auto -power -off simultaneously and are full of the function of warning, consequently have various, the with low costs and convenient to use's of function advantage.

Description

An intelligent charging control circuit

technical field

The utility model relates to a charging circuit, in particular to an intelligent charging control circuit.

Background technique

At present, the penetration rate of electric vehicles in my country is very high. From students to the elderly, many people use electric bicycles as a means of transportation. Electric vehicles bring convenience to people's travel. The emergence of electric vehicles not only reduces urban congestion , and the use of electric energy reduces greenhouse gas emissions, so it is loved by people. Electric vehicles use batteries as energy storage and power supply components, and their chargers are particularly important. However, most of the charging circuits equipped with electric vehicles on the market are ordinary The advanced charging module has a single function and is relatively backward, which can easily cause overcharging of the battery, affect the service life of the battery, and bring inconvenience to the user.

Utility model content

The purpose of this utility model is to provide an intelligent charging control circuit to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

An intelligent charging control circuit, comprising a relay J, a resistor R6, a resistor R7, a diode D, a diode D3 and an optocoupler U1, one end of the resistor R7 is connected to the cathode of the resistor R5, the resistor R6 and the diode D1, and the anode of the diode D1 is connected to The anode of the diode D4 and the contact J-1 of the relay J, the cathode of the diode D4 is connected to the resistor R1, the other end of the resistor R1 is connected to the capacitor C1, the anode of the diode D5, a fixed end of the potentiometer RP1, the speaker B, and the relay J The other end of contact J-1 is connected to speaker B, the other end of contact J-1 of relay J is connected to 220V AC, the other end of contact J-2 of relay J is connected to the other end of 220V AC, and the other end of resistor R5 Connect resistor R2, resistor R3, resistor R4, the other end of capacitor C1, relay J and the cathode of diode D5, the other end of resistor R2 is connected to pin 3 of optocoupler U1, and the other end of resistor R3 is connected to pin of optocoupler U1 1. Pin 4 of the optocoupler U1 is connected to the base of the transistor V2, the other end of the relay J is connected to the collector of the transistor V2, the emitter of the transistor V2 is connected to the cathode of the diode D6, and the anode of the diode D6 is connected to the other end of the resistor R4 and The emitter of the transistor V1, the collector of the transistor V1 are connected to pin 2 of the optocoupler U1, the other end of the resistor R7 is connected to the anode of the diode D2, the cathode of the diode D2 is connected to the fixed end 1 of the single-pole double-throw switch S, and the resistor R6 The other end is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the fixed end 2 of the single-pole double-throw switch S, and the moving end of the single-pole double-throw switch S is connected to the other fixed end of the potentiometer RP1, the positive pole of the battery E and the terminal of the relay J Contact J-3, the other end of the contact J-3 of the relay J is connected to the other end of the horn B.

As a preferred solution of the present invention: the model of the optical coupler U1 is 4N25.

Compared with the prior art, the beneficial effects of the utility model are: the intelligent charging control circuit of the utility model has a simple structure and fewer components, and at the same time has the functions of charging mode selection, charging status indication, automatic power off and full alarm, so The utility model has the advantages of various functions, low cost and convenient use.

Description of drawings

Figure 1 is a circuit diagram of an intelligent charging control circuit.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, an intelligent charging control circuit, including a relay J, a resistor R6, a resistor R7, a diode D, a diode D3 and an optocoupler U1, one end of the resistor R7 is connected to the cathode of the resistor R5, the resistor R6 and the diode D1, The anode of the diode D1 is connected to the anode of the diode D4 and the contact J-1 of the relay J, the cathode of the diode D4 is connected to the resistor R1, and the other end of the resistor R1 is connected to the capacitor C1, the anode of the diode D5, a fixed end of the potentiometer RP1, the speaker B. The other end of contact J-1 of relay J is connected to speaker B, the other end of contact J-1 of relay J is connected to 220V AC, and the other end of contact J-2 of relay J is connected to the other end of 220V AC. The other end of resistor R5 is connected to resistor R2, resistor R3, resistor R4, the other end of capacitor C1, the cathode of relay J and diode D5, the other end of resistor R2 is connected to pin 3 of optocoupler U1, and the other end of resistor R3 is connected to optocoupler U1. Pin 1 of the coupler U1, pin 4 of the optocoupler U1 are connected to the base of the transistor V2, the other end of the relay J is connected to the collector of the transistor V2, the emitter of the transistor V2 is connected to the cathode of the diode D6, and the anode of the diode D6 is connected to the resistor The other end of R4 is connected to the emitter of the transistor V1, the collector of the transistor V1 is connected to pin 2 of the optocoupler U1, the other end of the resistor R7 is connected to the anode of the diode D2, and the cathode of the diode D2 is connected to the fixed end of the single-pole double-throw switch S 1. The other end of the resistor R6 is connected to the anode of the diode D3, and the cathode of the diode D3 is connected to the fixed end of the SPDT switch S. 2. The moving end of the SPDT switch S is connected to the other fixed end of the potentiometer RP1 and the battery E. The positive pole is connected to the contact J-3 of the relay J, and the other end of the contact J-3 of the relay J is connected to the other end of the horn B.

Optocoupler U1 is a 4N25 model.

The working principle of the utility model is: in the charging circuit, the battery E is charged after the 220V voltage passes through the contact J-1 of the relay J, the diode D1, the current limiting resistor R6 or R7. The resistance of the resistor R7 is greater than that of the resistor R6, and the diode D2 and the diode D3 are light-emitting diodes for indicating the charging status. Switch S2 is a "fast" and "slow" charging selection switch.

In the voltage detection circuit, R4 and D6 provide the reference voltage, and the forward voltage drop when D6 is turned on is used as the reference voltage to be added to the emitter stage of V2. The voltage is added to the base of V1 and compared with the emitter voltage to control the automatic shutdown circuit.

When the voltage at both ends of the battery rises to the set value, it means that the battery is fully charged. After being sampled by RP1, the voltage applied to the base of V1 is greater than its conduction voltage. At this time, V1 is turned on, and the 1, Pin 2 is turned on, so that V2 is turned on, relay J is turned on, and its normally closed contacts J-1 and J-2 are disconnected. The normally open contact J-3 pulls in, and the horn B emits an alarm sound to remind the user to disconnect the power plug in time.

Claims (2)

1. null1. an intelligent charge control circuit，Including relay J、Resistance R6、Resistance R7、Diode D、Diode D3 and photo-coupler U1，It is characterized in that，One end of described resistance R7 connects resistance R5、The negative electrode of resistance R6 and diode D1，The anode of diode D1 connects the anode of diode D4 and the contact J-1 of relay J，The negative electrode of diode D4 connects resistance R1，The other end of resistance R1 connects electric capacity C1、The anode of diode D5、The fixing end of of potentiometer RP1、Loudspeaker B、The other end of the contact J-1 of relay J and loudspeaker B，The other end of the contact J-1 of relay J connects 220V alternating current，The other end of the contact J-2 of relay J connects the other end of 220V alternating current，The other end of resistance R5 connects resistance R2、Resistance R3、Resistance R4、The other end of electric capacity C1、The negative electrode of relay J and diode D5，The other end of resistance R2 connects the foot 3 of photo-coupler U1，The other end of resistance R3 connects the foot 1 of photo-coupler U1，The base stage of the foot 4 connecting triode V2 of photo-coupler U1，The colelctor electrode of the other end connecting triode V2 of relay J，The emitter stage of audion V2 connects the negative electrode of diode D6，The anode of diode D6 connects the other end of resistance R4 and the emitter stage of audion V1，The colelctor electrode of audion V1 connects the foot 2 of photo-coupler U1，The other end of resistance R7 connects the anode of diode D2，The negative electrode of diode D2 connects not moved end 1 of single-pole double-throw switch (SPDT) S，The other end of resistance R6 connects the anode of diode D3，The negative electrode of diode D3 connects not moved end 2 of single-pole double-throw switch (SPDT) S，The moved end of single-pole double-throw switch (SPDT) S connects another fixing end of potentiometer RP1、The positive pole of accumulator E and the contact J-3 of relay J，The other end of the contact J-3 of relay J connects the other end of loudspeaker B.
2. 2. according to a kind of intelligent charge control circuit described in claim 1, it is characterised in that the model of described photo-coupler U1 is 4N25.