Multifunctional automatic voltage regulator for direct-current generator

Abstract

The utility model belongs to the technical field, and particularly relates to a multifunctional automatic voltage regulator for a direct-current generator, which comprises a casing, a control circuit board and a generator, the control circuit board is fixedly connected onto the casing and electrically connected with the generator, and the casing is fixedly connected with the casing. The control circuit board comprises a voltage regulation module circuit and a multifunctional module circuit, the voltage regulation module circuit is electrically connected with the multifunctional module circuit, the multifunctional module circuit is electrically connected with the generator, and the voltage regulation module circuit is electrically connected with the generator. According to the utility model, the voltage regulation control circuit and the multifunctional module circuit are designed on one circuit board, so that the integration level of equipment is improved, and the system structure is simplified.

Description

Technical Field

[0001] This utility model relates to the field of automatic voltage regulator for generators, specifically a multi-functional automatic voltage regulator for DC generators. Background Technology

[0002] Engine speed varies widely during operation, and the generator's terminal voltage will also vary considerably with engine speed. The generator requires stable voltage for supplying power to electrical equipment and charging the battery. Therefore, to maintain a relatively constant voltage value, the generator's output voltage must be regulated. The voltage regulator controls the charging of the battery by the vehicle's generator, preventing overcharging. Existing automatic generator voltage regulators only have voltage regulation functions and lack other extended functions. Traditional generator voltage regulation systems are increasingly unable to meet the growing operational demands. Utility Model Content

[0003] To address the technical problem that existing generator voltage automatic regulators only have voltage regulation functions and lack other extended functions, this utility model provides a multi-functional voltage automatic regulator for DC generators. This regulator has high integration and control accuracy, and innovatively adds generator speed monitoring, generator output voltage monitoring, and generator excitation status monitoring. It also adds overload and overvoltage protection. By collecting these data, it can determine whether the generator's external circuit is normal, whether the generator's operating status is normal, and whether the generator needs to enter protection mode. Real-time monitoring of the generator's operating status can be achieved without adding external equipment.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A multi-functional automatic voltage regulator for a DC generator includes a housing, a control circuit board, and a generator. The control circuit board is fixedly connected to the housing and electrically connected to the generator. The control circuit board includes a voltage regulation module circuit and a multi-functional module circuit. The voltage regulation module circuit and the multi-functional module circuit are electrically connected. The multi-functional module circuit is electrically connected to the generator. The voltage regulation module circuit is also electrically connected to the generator.

[0006] The voltage regulation module circuit includes a D+ terminal, a D- terminal, a filter voltage divider circuit, an integrated power supply module, a voltage regulator chip, a voltage regulator chip, and a MOSFET. The generator is electrically connected to the D+ terminal. A filter voltage divider circuit is electrically connected between the D+ and D- terminals. The D+ terminal is electrically connected to the integrated power supply module, which converts the 12V power supply to 5V. The integrated power supply module is electrically connected to a voltage regulator chip. The integrated power supply module is electrically connected to the voltage regulator chip. The voltage regulator chip is electrically connected to the filter voltage divider circuit. The DD pin of the voltage regulator chip is electrically connected to the gate of the MOSFET.

[0007] The integrated power module uses a 78L12 chip, the voltage regulator chip uses an L78L05ABUTR chip, and the power management chip uses a Cs3361 chip.

[0008] The multi-functional module circuit includes a first logic circuit chip, a multi-functional module, a second logic circuit chip, and a 5V power supply port. The DD pin of the voltage regulator chip is electrically connected to the first logic circuit chip. The first logic circuit chip is electrically connected to the multi-functional module. The multi-functional module is electrically connected to the second logic circuit chip. The multi-functional module is electrically connected to the 5V power supply port.

[0009] Both the first and second logic circuit chips use the SN74AHCT1G14 chip, and the multi-functional module uses the STC15W204S microcontroller chip.

[0010] Compared with the prior art, the advantages of this utility model are:

[0011] This invention integrates the voltage regulation control circuit and the multi-functional module circuit onto a single circuit board, improving the device's integration and simplifying the system structure. This invention features high integration and control precision. The regulation chip in the voltage regulation circuit module provides overload and overvoltage protection. The multi-functional circuit module monitors the generator speed, generator output voltage, and generator excitation status. The microcontroller within the multi-functional module can collect, analyze, and process relevant data. This collected data can be used to determine whether the generator's external circuitry is normal, whether the generator's operating status is normal, and whether the generator needs to enter protection mode. Communication data is output from the communication interface to achieve the aforementioned functions. Attached Figure Description

[0012] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0013] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 The circuit principle of the voltage regulation module of this utility model Figure 1 ;

[0016] Figure 3 The circuit principle of the voltage regulation module of this utility model Figure 2 ;

[0017] Figure 4 This is the circuit schematic diagram of the multifunctional module of this utility model.

[0018] Wherein: 1 is the housing, 2 is the control circuit board, 201 is the voltage regulation module circuit, U1 is the integrated power module, U2 is the voltage regulator chip, U3 is the voltage regulator chip, LC is the filter voltage divider circuit, Q1 is the MOSFET, 202 is the multi-function module circuit, U4 is the first logic circuit chip, U5 is the multi-function module, and U6 is the second logic circuit chip. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. These descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the claims of this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this application, it should be noted that, unless otherwise expressly 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] A multi-functional automatic voltage regulator for DC generators, such as Figure 1 As shown, the system includes a housing 1, a control circuit board 2, and a generator. The control circuit board 2 is fixedly connected to the housing 1 and electrically connected to the generator. The control circuit board 2 includes a voltage regulation module circuit 201 and a multi-function module circuit 202. The voltage regulation module circuit 201 and the multi-function module circuit 202 are electrically connected, and the multi-function module circuit 202 is electrically connected to the generator. The main function of the voltage regulation module circuit 201 is to regulate the generator's output voltage by controlling the magnitude of the generator's excitation current. When the generator's output voltage is lower than a set value, the voltage regulation module increases the excitation current, thereby increasing the generator's output voltage; conversely, when the generator's output voltage is higher than the set value, it decreases the excitation current to lower the generator's output voltage, thereby maintaining the stability of the generator's output voltage. The multi-function module circuit 202 is responsible for processing various signals from the generator and monitoring and protecting the generator. The multi-function module circuit 202 can detect the generator's load status, fault information, etc., and feed this information back to the engine control module or other control systems. The control circuit board 2 is directly connected to the generator via the voltage regulation module circuit 201, which enables the voltage regulation module to monitor and adjust the generator's output voltage in real time. Simultaneously, the multi-function module circuit 202, through its electrical connection to the generator, can receive the generator's operating status information and process and provide feedback as needed.

[0024] Furthermore, such as Figure 2, Figure 3 As shown, the voltage regulation module circuit 201 includes a D+ terminal, a D- terminal, a filter voltage divider circuit LC, an integrated power supply module U1, a voltage regulator chip U2, a voltage regulator chip U3, and a MOSFET Q1. The generator is connected to the positive terminal of the power supply through the D+ terminal, and the D- terminal is connected to the negative terminal. The D+ terminal is electrically connected to the filter voltage divider circuit LC. The function of the filter voltage divider circuit LC is to reduce voltage fluctuations and provide a stable voltage signal for subsequent circuits. The D+ terminal is also electrically connected to the integrated power supply module U1. The main function of the integrated power supply module U1 is to convert the 12V power supplied by the generator to 5V power for use by other electronic devices. The integrated power supply module U1 is also electrically connected to the voltage regulator chip U2 and the voltage regulator chip U3. The voltage regulator chip U2 is used to further stabilize the output voltage, ensuring it remains at a constant level. The voltage regulator chip U3 is responsible for adjusting the output voltage to meet the needs of different loads. The DD pin of the voltage regulator chip U3 is electrically connected to the gate of the MOSFET Q1, and the output voltage is adjusted by controlling the conduction and cutoff of the MOSFET Q1. Specifically, when the voltage regulator chip U3 detects that the output voltage is lower than the set value, it increases the voltage to the gate of MOSFET Q1, turning on the MOSFET and thus increasing the load current. Conversely, when the output voltage is higher than the set value, the voltage regulator chip U3 decreases the voltage to the gate of MOSFET Q1, turning off the MOSFET and reducing the load current. This dynamic adjustment mechanism ensures the stability and reliability of the output voltage.

[0025] Furthermore, such as Figure 4 As shown, the multi-function module circuit 202 includes a first logic circuit chip U4, a multi-function module U5, a second logic circuit chip U6, and a 5V power supply port. The DD pin of the voltage regulator chip U3 is electrically connected to the first logic circuit chip U4. This voltage regulator chip U3 is responsible for providing a stable voltage to U4. There is an electrical connection between the first logic circuit chip U4 and the multi-function module U5. The first logic circuit chip U4 sends control signals to the multi-function module U5 to monitor the generator excitation. There is also an electrical connection between the multi-function module U5 and the second logic circuit chip U6; the multi-function module U5 transmits processed data or signals to the second logic circuit chip U6.

[0026] Furthermore, preferably, the integrated power module U1 uses a 78L12 chip, the voltage regulator chip U2 uses an L78L05ABUTR chip, and the power management chip U3 uses a Cs3361 chip. The first logic circuit chip U4 and the second logic circuit chip U6 both use SN74AHCT1G14 chips, and the multi-function module U5 uses an STC15W204S microcontroller chip.

[0027] The above description only describes the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.

Claims

1. A multifunctional voltage automatic regulator for a DC generator, characterized by: Including shell (1), control circuit board (2) and generator, control circuit board (2) is fixedly connected on shell (1), control circuit board (2) is electrically connected with generator, control circuit board (2) includes voltage regulating module circuit (201) and multifunctional module circuit (202), voltage regulating module circuit (201) is electrically connected with multifunctional module circuit (202), multifunctional module circuit (202) is electrically connected with generator, voltage regulating module circuit (201) is electrically connected with generator.

2. A multi-functional voltage automatic regulator for a DC generator according to claim 1, characterized in that: Voltage regulating module circuit (201) includes D+ wiring port, D-wiring port, filter voltage dividing circuit (LC), integrated power module (U1), voltage stabilizing chip (U2), voltage regulating chip (U3), MOS tube (Q1), generator is electrically connected on D+ wiring port, there is filter voltage dividing circuit (LC) between D+ wiring port and D-wiring port, D+ wiring port is electrically connected with integrated power module (U1), 12V power supply is converted into 5V power supply by integrated power module (U1), integrated power module (U1) is electrically connected with voltage stabilizing chip (U2), integrated power module (U1) is electrically connected with voltage regulating chip (U3), voltage regulating chip (U3) is electrically connected with filter voltage dividing circuit (LC), the DD pin of voltage regulating chip (U3) is electrically connected with the gate of MOS tube (Q1).

3. A multi-functional voltage automatic regulator for a DC generator according to claim 2, characterized in that: Integrated power module (U1) adopts 78L12 chip, voltage stabilizing chip (U2) adopts L78L05ABUTR chip, voltage regulating chip (U3) adopts Cs3361 chip.

4. A multi-functional voltage automatic regulator for a DC generator according to claim 2, characterized in that: Multifunctional module circuit (202) includes first logic circuit chip (U4), multifunctional module (U5), second logic circuit chip (U6) and 5V power supply port, the DD pin of voltage regulating chip (U3) is electrically connected with first logic circuit chip (U4), first logic circuit chip (U4) is electrically connected with multifunctional module (U5), multifunctional module (U5) is electrically connected with second logic circuit chip (U6), multifunctional module (U5) is electrically connected with 5V power supply port.

5. A multi-functional voltage automatic regulator for a DC generator according to claim 4, characterized in that: First logic circuit chip (U4) and second logic circuit chip (U6) all adopt SN74AHCT1G14 chip, multifunctional module (U5) adopts STC15W204S single-chip microcomputer chip.

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