CN208143115U - A kind of second level starting motor - Google Patents

Abstract

A two-stage starting motor of the utility model includes a rotor, a stator, and an excitation coil, and the excitation coil is connected with an external power supply. The excitation coil includes a main power coil and an auxiliary power coil, the main power coil and the auxiliary power coil are wound together, and the number of turns of the main power coil is smaller than the number of turns of the auxiliary power coil. The main power coil and the auxiliary power coil are connected with the external power supply through the switch distribution device. The switch distributing device includes a primary master switch and a secondary selector switch, and the primary master switch is arranged between the first end of the active power coil and the external power supply. The second end of the main power coil is connected to the first end of the auxiliary power coil, and the secondary selection switch is arranged between the second end of the main power coil and the second end of the auxiliary power coil. The utility model reduces the demand for starting current by setting the auxiliary power coil and connecting the main power coil and the auxiliary power coil in series when starting. Therefore, the problem of excessive starting current of the motor in the prior art is solved.

Description

A secondary starter motor

technical field

The utility model relates to the field of motors, in particular to a secondary starter motor.

Background technique

With the progress of society, environmental protection is becoming more and more important. The pollution problems caused by traditional energy vehicles are getting more and more attention. Special fossil fuel mining is less and less. New energy vehicles enter people's lives, especially electric vehicles. growing in popularity.

Since the electric vehicle is driven by an electric motor, the electric motor requires a large current when it is started, which has a large impact on the battery and greatly affects the life of the battery. In order to solve the problem of excessive motor starting current in the prior art. Therefore, prior art needs to be improved.

Utility model content

The utility model provides a two-stage starting motor, which is used to solve the problem of excessive starting current of the motor in the prior art.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

A two-stage starter motor, the two-stage starter motor includes a rotor, a stator, and an excitation coil, and the excitation coil is connected to an external power supply;

The excitation coil includes a main power coil and an auxiliary power coil, the main power coil and the auxiliary power coil are wound together, and the number of turns of the main power coil is smaller than the number of turns of the auxiliary power coil;

The main power coil and the auxiliary power coil are connected to the external power supply through a switch distribution device;

The switch distribution device includes a primary main switch and a secondary selection switch, and the primary primary switch is arranged between the first end of the active power coil and the external power supply;

The second end of the main power coil is connected to the first end of the auxiliary power coil, and the secondary selection switch is arranged between the second end of the main power coil and the second end of the auxiliary power coil.

A further improvement is that an auxiliary switch is provided on the switch distribution device, and the auxiliary switch is arranged between the second end of the main power coil and the first end of the auxiliary power coil.

A further improvement is that the auxiliary switch and the secondary selection switch are combined into one auxiliary control switch.

A further improvement is that the auxiliary control switch is activated through a delay mechanism.

A further improvement is that a joint reset unit is provided on the primary main switch and the auxiliary control switch.

A further improvement is that the number of turns of the primary power coil is equal to a quarter of the number of turns of the auxiliary power coil.

A further improvement is that the diameter of the wire of the main power coil is equal to four times the diameter of the wire of the auxiliary power coil.

A further improvement is that a buffer capacitor is connected to both ends of the auxiliary power coil.

The utility model has the beneficial effects that it possesses due to the use of the above technical scheme:

The secondary starting motor of the utility model is provided with an auxiliary power coil, and the main power coil and the auxiliary power coil are connected in series to reduce the demand for starting current when starting. Therefore, the problem of excessive starting current of the motor in the prior art is solved.

Description of drawings

Fig. 1 is a schematic diagram of the structural connection of a two-stage starter motor of the present invention.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with the accompanying drawings.

The first embodiment of the present invention provides a two-stage starter motor. As shown in FIG. 1 , the two-stage starter motor includes a rotor, a stator, and an excitation coil, and the excitation coil is connected to an external power source 1 . The excitation coil includes a main power coil 2 and an auxiliary power coil 3 , the main power coil 2 and the auxiliary power coil 3 are wound together, and the number of turns of the main power coil 2 is less than the number of turns of the auxiliary power coil 3 . For the convenience of use and winding, the preferred number of turns is equal to 1/4 of the turns of the main power coil 2 and the auxiliary power coil 3, and the corresponding main power coil 2 wire diameter is equal to four times the auxiliary power coil 3 wire diameter.

The main power coil 2 and the auxiliary power coil 3 are connected to the external power source 1 through a switch distribution device. The switch distribution device includes a primary switch 4, an auxiliary switch 5 and a secondary selector switch 6 combined into one as an auxiliary control switch. The primary main switch 4 is arranged between the first end 21 of the main power coil 2 and the external power source 1 . The second end 22 of the main power coil 2 and the first end 31 of the auxiliary power coil 3 are connected through the auxiliary switch 5, and the secondary selection switch 6 is arranged between the second end 22 of the main power coil 2 and the second end 32 of the auxiliary power coil 3 .

In addition, in order to avoid the inductance effect during short circuit, buffer capacitors 7 are connected to both ends of the main power coil 2 and the auxiliary power coil 3 .

In order to automatically start the auxiliary control switch through the delay mechanism, that is, the auxiliary control switch can be automatically started within a fixed time after the primary main switch 4 is started, and the delay mechanism can be realized by an electronic counter or a mechanical counter. In order to avoid that after the primary main switch 4 is closed, the auxiliary control switch does not return to its original state and cannot play a role in the next start-up, a joint reset unit is provided on the primary main switch 4 and the auxiliary control switch.

When in use, first turn on the primary master switch 4, and after the motor starts, the auxiliary control switch can be started manually or automatically, so that the motor enters a normal working state. When the motor is turned off, the first-level main switch 4 is closed, and the auxiliary control switch of the combined reset unit is reset and waits for the next start.

The utility model reduces the demand for starting current by setting the auxiliary power coil and connecting the main power coil and the auxiliary power coil in series when starting. Therefore, the problem of excessive starting current of the motor in the prior art is solved.

The specific embodiments of the utility model have been described above. It should be understood that the utility model is not limited to the specific embodiments described above, and the equipment and structures not described in detail should be understood as being implemented in a common way in the art; those skilled in the art can make Some simple inferences, deformations or replacements are made without various deformations or modifications, which do not affect the essential content of the utility model.

Claims (8)

1. A secondary starter motor, said secondary starter motor comprising rotor, stator, field coil, said field coil is connected with external power supply, characterized in that: The excitation coil includes a main power coil and an auxiliary power coil, the main power coil and the auxiliary power coil are wound together, and the number of turns of the main power coil is smaller than the number of turns of the auxiliary power coil; The main power coil and the auxiliary power coil are connected to the external power supply through a switch distribution device; The switch distribution device includes a primary main switch and a secondary selection switch, and the primary primary switch is arranged between the first end of the active power coil and the external power supply; The second end of the main power coil is connected to the first end of the auxiliary power coil, and the secondary selection switch is arranged between the second end of the main power coil and the second end of the auxiliary power coil. 2. A two-stage starter motor according to claim 1, wherein an auxiliary switch is provided on the switch distribution device, and the auxiliary switch is arranged at the second end of the main power coil and the auxiliary power coil. between the first ends of the coil. 3. The two-stage starter motor according to claim 2, wherein the auxiliary switch and the two-stage selector switch are combined into one as an auxiliary control switch. 4. The two-stage starter motor according to claim 3, wherein the auxiliary control switch is started by a delay mechanism. 5. A two-stage starter motor according to claim 3, characterized in that: said primary main switch and said auxiliary control switch are provided with a joint reset unit. 6 . The two-stage starter motor according to claim 1 , wherein the number of turns of the active power coil is equal to a quarter of the number of turns of the auxiliary power coil. 7. The two-stage starter motor according to claim 6, wherein the diameter of the lead wire of the active power coil is equal to four times the diameter of the lead wire of the auxiliary power coil. 8 . The two-stage starter motor according to claim 1 , wherein buffer capacitors are connected at both ends of the auxiliary power coil.