Circuit solution of electric vehicle

Schematic diagram of electric vehicle circuit;

The circuit diagram of electric bicycle only shows the working principle of each electrical device that constitutes the circuit of electric bicycle, such as the direction of current and the sequence of flowing through electrical devices. The wires on the drawing only represent the interconnection and relationship of electrical equipment, and do not represent the actual installation position.

The sequence of electrical equipment in the circuit diagram of electric bicycle is from left to right and from top to bottom: the power supply (battery) is on the left and the electrical equipment is on the right; Each local circuit should be drawn together as much as possible; The "live wire" is above and the ground wire is below; In the schematic diagram of local circuit, the signal input (or control terminal) is on the left, and the signal output (or drive terminal) is on the right: the "live wire" is above and the ground wire is below.

Extended data:

Problems needing attention in reading the circuit diagram of electric bicycle

(1) Read the legend several times. When you look at the circuit diagram, you must read the legend carefully. In this way, the composition and characteristics of the circuit can be roughly understood.

(2) Easy first, then difficult.

Some local circuits of some electric bicycle circuit diagrams, or some parts of local circuits, may be complicated and difficult to understand for a while, so you can put them aside first, and then further understand these circuits by combining circuit-related materials after other local circuits are understood.

(3) Be familiar with the graphic symbols of electric bicycle circuits.

The circuit diagram of electric bicycle shows its composition and working principle with circuit graphic symbols. Therefore, you must be familiar with the meaning of circuit graphic symbols in order to understand the circuit diagram.

(4) Understand the arrangement of electrical equipment in the circuit diagram.

In the electrical system, a large number of electrical equipment are mechatronics, such as various relays. When these electrical devices are represented on the circuit diagram, in order to make the picture simple and easy to read, most of them use "centralized representation" or "separate representation" to reflect the connection of the circuit.

(5) Understand the initial state of switches and relays.

Various switches and relays are drawn according to their initial positions in the circuit diagram, such as the button is not pressed, the switch is not turned on, the relay coil is not energized, and its contacts are not closed (normally open contacts) or not opened (normally closed contacts). This state is called the original state. But when you look at the picture, you can't analyze it completely according to the original state, otherwise it is difficult to understand the working principle expressed by the circuit.

Baidu encyclopedia-electric vehicle