CN212785218U - Voltage regulation rectifying device for output of power generation equipment on engine - Google Patents

Abstract

The utility model discloses a voltage regulation fairing of power generation facility output on engine, including the generator, battery and control module, it has rectifier circuit and voltage detection module to concatenate between generator and battery, wherein control module gathers voltage detection module's signal and feeds back to rectifier circuit, speed monitoring module has been increased, temperature detection module and current detection module, wherein speed monitoring module gathers the rotor speed signal of generator and feeds back to control module, temperature detection module gathers inside temperature signal and feeds back to control module, current detection module gathers rectifier circuit's current signal and feeds back to control module. The utility model discloses an on the existing equipment basis, increase electric current, speed and temperature detection module, realize the real time monitoring to engine operating condition under different work condition, adjust the output performance of this device to reach better control effect.

Description

Voltage regulation rectifying device for output of power generation equipment on engine

Technical Field

The utility model belongs to the technical field of engine output performance adjusts, concretely relates to voltage regulation fairing of power generation facility output on engine.

Background

At present, in engine electrical systems of some equipment such as automobiles, motorcycles and the like, a voltage regulating rectifier device is generally installed, and the output voltage of a generator is automatically regulated by controlling the exciting current of an alternating current exciter of the generator. The voltage regulating rectifier device is generally a voltage regulating control mode adopted by a full-wave rectification plus silicon controlled short-circuit, and the control mode is as shown in fig. 1, for example: 14.5V, controlling three-phase silicon controlled rectifiers Thu, Thv and Thw to be respectively conducted to charge the storage battery; and when the voltage of the storage battery reaches 14.5V, the three-phase silicon controlled rectifiers Thu, Thv and Thw are controlled to be turned off, and the charging is stopped.

The drawback of the above-described voltage regulation circuit is that it is not only necessary to operate the engine in any state, for example: the voltage-regulating rectifying device is charged in a stable voltage manner all the time, and the output performance of the voltage-regulating rectifying device cannot be adjusted according to the working state of the engine, so that a better control effect is achieved; meanwhile, the storage battery of the engine is easy to damage, and the defects of high oil consumption, high temperature rise, quick demagnetization, short service life and the like of the engine are caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a voltage regulation fairing of power generation facility output on engine, the device increase electric current, speed and temperature detection module on the existing equipment basis, realize the real time monitoring to engine operating condition under different work condition, adjust the output performance of this device to reach better control effect.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is: the utility model provides a voltage regulation fairing of power generation facility output on engine, includes three-phase AC's generator, battery and the control module of being connected with the generator, has concatenated rectification circuit and voltage detection module between generator and battery, and wherein control module gathers voltage detection module's signal and feeds back to rectification circuit, its characterized in that: the generator is characterized by further comprising a speed monitoring module, a temperature detection module and a current detection module, wherein the speed monitoring module collects a rotor rotating speed signal of the generator and feeds back the rotor rotating speed signal to the control module, the temperature detection module collects an internal temperature signal and feeds back the internal temperature signal to the control module, and the current detection module collects a current signal of the rectifying loop and feeds back the current signal to the control module.

Further explaining the scheme, the speed monitoring module comprises a shaping circuit, and the shaping circuit shapes the alternating current signal output by the generator into a direct current square wave signal and inputs the direct current square wave signal into the control module.

Further explaining the scheme, the temperature detection module comprises a thermistor for acquiring the internal temperature of the equipment and a resistor connected with the thermistor in parallel, and the voltage difference between the thermistor and the resistor is input to the control module.

Further explaining the scheme, the current detection module comprises a current sampling resistor connected in series with the storage battery charging loop and an operational amplifier for amplifying a voltage drop of the current sampling resistor, and a signal amplified by the operational amplifier is input to the control module.

To further explain the above scheme, the control module is a chip with model number MC9S08SE 8.

Further explaining the scheme, the rectification loop comprises three diodes and three thyristors, and the control module controls the on-off of the thyristors.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the utility model provides a pressure regulating fairing

On original circuit design, increase sampling and control circuit such as speed, temperature and electric current, control output according to adopting data simultaneously, realize the real time monitoring to engine operating condition under the different work condition, adjust the output performance of this device to reach better control effect.

Drawings

FIG. 1 is a schematic diagram of a voltage regulation control assembly of an existing voltage regulation rectifier device;

FIG. 2 is a schematic diagram of the present invention;

FIG. 3 is a diagram of a middle speed detection module according to the present invention;

FIG. 4 shows a middle temperature detecting module of the present invention;

fig. 5 is a middle current detection module of the present invention;

FIG. 6 is a control flow chart of the present invention;

in the figure: 1. the device comprises a generator, 2, a rectification loop, 3, a storage battery, 4, a voltage detection module, 5, a control module, 6, a speed detection module, 7, a temperature detection module, 8 and a current detection module.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The utility model particularly relates to a voltage regulation fairing of power generation facility output on engine improves and gets on original voltage regulation fairing's basis.

The original voltage regulation rectifying device is shown in the attached drawing 1, and comprises a generator 1 for providing three-phase alternating current, a storage battery 3 connected with the generator 1 and a control module 5, wherein a rectifying circuit 2 and a voltage detection module 4 are connected between the generator 1 and the storage battery 3 in series, and the control module 5 collects signals of the voltage detection module 4 and feeds the signals back to the rectifying circuit 2.

Fig. 2 is the utility model discloses a pressure regulating fairing has increased speed monitoring module 6, temperature detection module 7 and current detection module 8 on the basis of fig. 1.

The circuit diagram of the speed monitoring module 6 is shown in fig. 3, and specifically includes a shaping circuit, the shaping circuit shapes the alternating current signal output by the generator 1 into a direct current square wave signal, and the direct current square wave signal is input into the control module 5, and the rotating speed of the generator is obtained by calculating the frequency.

The circuit diagram of the temperature detection module 7 is shown in fig. 4, and includes a thermistor R12 for acquiring the internal temperature of the device and a resistor R11 connected in parallel with the thermistor R12, and the voltage is input to the control module 5 through the voltage division of the R11 and the R12, because the resistance values of the thermistor R12 are different at different temperatures, the voltage input to the control module 5 is also different, and each voltage value corresponds to a different temperature.

The circuit diagram of the current detection module 8 is shown in fig. 5, and includes a current sampling resistor R21 connected in series in the charging circuit of the storage battery 3 and an operational amplifier U1 for signal amplifying the voltage drop of the current sampling resistor R21, and the voltage drop of R21 is amplified by the operational amplifier U1 and then input to the control module 5, wherein each voltage value corresponds to a current value.

The control module 5 adopts a chip with the model number of MC9S08SE 8.

The speed, temperature and current sampling and control loop is increased on the circuit design, and the output is controlled by software to achieve a better state, wherein the software control flow chart is shown in figure 6.

(1) In the engine start control, when the engine is started, in order to make the engine reach a higher rotation speed, it is necessary to reduce the resistance of the engine and make the start easier.

When the speed detection module detects the engine speed, for example, the engine speed is below 1000rpm, the three-phase silicon controlled rectifiers Thu, Thv and Thw are controlled to be turned off, no current passes through a coil of the generator, and the resistance is minimum.

(2) In the idle speed control, since the voltage output by the generator is low during the idle operation, a high voltage value, for example, 15V, is set at this time in order to prevent the battery from being short of power, and the battery is charged as much as possible while ensuring the safety of the battery charging.

(3) And (3) performing rapid acceleration control, namely detecting the rising rate of the rotating speed of the engine when the vehicle needs rapid acceleration, such as overtaking and ascending, judging that the vehicle is rapidly accelerated when the rising rate reaches a set value, and controlling the three-phase thyristors Thu, Thv and Thw to be switched off at the moment to reduce resistance, so that the vehicle speed is rapidly improved, and the safety is improved.

(4) And (2) performing rapid deceleration control, namely detecting the speed reduction rate of the engine when the vehicle brakes or descends a slope, judging that the vehicle decelerates rapidly when the speed reduction rate reaches a set value, controlling the output voltage value to be higher, for example, 19V, conducting the three-phase silicon controlled rectifiers Thu, Thv and Thw for a long time, and generating large resistance due to large current in a coil of the engine so as to achieve the aim of decelerating rapidly.

(5) And overspeed control, when the rotating speed reaches the set overspeed control rotating speed, such as 10000rpm, the charging voltage value is reduced, such as 14.2V, and the storage battery is prevented from being damaged by overcharge.

(6) Overcurrent control has set up the current acquisition return circuit inside, and when the output current who detects reached the current value that sets up, control three-phase silicon controlled rectifier Thu, Thv, Thw shut off, stop output, protection rectifier element is because of the too big damage of electric current.

(7) The overheating control is characterized in that a temperature acquisition loop is arranged inside the overheating control device, when the detected temperature reaches a set upper limit value, the current output is controlled to be reduced, the internal heating is reduced, and the damage caused by overheating of internal elements is prevented.

In the voltage-regulating rectifying device, a generator 1 provides three-phase alternating current, a rectifying loop 2 is formed by three diodes Du, Dv and Dw and three silicon controlled rectifiers Thu, Thv and Thw to charge a storage battery 3, and the on-off of the silicon controlled rectifiers is controlled by a control module 5 according to the voltage detected by a voltage detection module 4 to achieve a stable output voltage value; sampling is carried out through a speed detection module 6, a temperature detection module 7 and a current detection module 8 which are arranged inside, and the functions of the above items are achieved through a control module 5 according to the sampling result.

Claims (6)

1. The utility model provides a voltage regulation fairing of power generation facility output on engine, is including providing three-phase alternator (1), battery (3) and the control module (5) of being connected with alternator (1), has concatenated rectifier circuit (2) and voltage detection module (4) between alternator (1) and battery (3), wherein control module (5) gather the signal of voltage detection module (4) and feed back to rectifier circuit (2), its characterized in that: the generator is characterized by further comprising a speed monitoring module (6), a temperature detection module (7) and a current detection module (8), wherein the speed monitoring module (6) collects a rotor rotating speed signal of the generator (1) and feeds back the rotor rotating speed signal to the control module (5), the temperature detection module (7) collects an internal temperature signal and feeds back the internal temperature signal to the control module (5), and the current detection module (8) collects a current signal of the rectifying loop (2) and feeds back the current signal to the control module (5).

2. The voltage-regulating rectifying device for the output of the power generation equipment on the engine as claimed in claim 1, characterized in that the speed monitoring module (6) comprises a shaping circuit, and the shaping circuit shapes the alternating current signal output by the generator (1) into a direct current square wave signal and inputs the direct current square wave signal into the control module (5).

3. The voltage-regulating rectifying device for the output of the power generation equipment on the engine as claimed in claim 1, characterized in that the temperature detection module (7) comprises a thermistor (R12) for collecting the internal temperature of the equipment and a resistor (R11) connected with the thermistor (R12) in parallel, and the voltage difference between the thermistor (R12) and the resistor (R11) is input to the control module (5).

4. The voltage regulation rectifying device of the power generation equipment output on the engine according to the claim 1 is characterized in that the current detection module (8) comprises an operational amplifier (U1) connected with a current sampling resistor (R21) in series in a charging loop of the storage battery (3) and amplifying a voltage drop of the current sampling resistor (R21), and a signal amplified by the operational amplifier (U1) is input to the control module (5).

5. The voltage-regulating rectifying device for the output of the power generation equipment on the engine as claimed in any one of claims 1 to 4, characterized in that the control module (5) is a chip with model number MC9S08SE 8.

6. The voltage-regulating rectifying device for the output of the power generation equipment on the engine as claimed in claim 1, characterized in that the rectifying loop (2) comprises three diodes and three thyristors, and the control module (5) controls the on-off of the thyristors.

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