Generator regulator resistant to abnormal voltage stamping, AC generator and automobile

Abstract

The utility model discloses a generator regulator resistant to abnormal voltage stamping, an AC generator and an automobile, a chip of the generator regulator comprises a terminal P led out from a pin Pi n of the chip, and the terminal P is used for being connected with a stator output end of the generator; a resistor element R1 is connected in series between the terminal P and the pin Pi < n > of the generator regulator chip; and a chip Pi n pin corresponding to the terminal P is grounded through a transient voltage stabilizing diode ZD2. The generator regulator has the advantages that the safety and reliability of a generator regulator chip are ensured by designing the protection circuits at the P end and the B + end of the generator regulator, and the failure risk caused by voltage impact is avoided; conventional electrical elements are adopted, so that the cost is low, and stability and reliability are realized.

Description

Technical Field

[0001] The utility model relates to the field of automobile alternating current generators, in particular to a generator regulator resistant to abnormal voltage stamping, an alternating current generator and an automobile. Background Art

[0002] As the main power supply part of the car, the AC generator works on the principle of converting mechanical energy into electrical energy. During operation, the rotor generates a rotating magnetic field, the stator generates an induced electromotive force, and the AC voltage is converted into a DC voltage through the rectifier diode. The generator regulator adjusts the stator DC voltage to stabilize the motor output voltage within a certain range. It is often integrated with the AC generator, such as a motor vehicle AC generator and its regulator with patent application number 201920457715.8, which discloses a regulator with strong protection, strong maintainability and simple processability, while increasing the service life of the AC generator containing the regulator, and improving the regulator structurally.

[0003] However, it does not take into account the impact of electrical fluctuations on the internal chip of the generator regulator. Due to the complexity of the vehicle's electricity consumption, there will be high instantaneous abnormal energy during the circuit switching process. These abnormal energies (large current or large voltage) will enter the internal voltage regulator chip of the regulator through the external connection terminals of the regulator, thereby causing the regulator voltage regulator chip to fail; at the same time, the terminals most likely to fail are often the regulator P terminal (directly connected to the stator output terminal) and the B+ terminal (directly connected to the external electrical appliance). The existing technology does not have relevant protection measures at the generator regulator P terminal and B+ terminal, resulting in the risk of chip damage and failure of the regulator chip. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a generator regulator, an AC generator and a car that are resistant to abnormal voltage surges. By designing a protection circuit for the P terminal and the B+ terminal of the generator regulator, the safety and reliability of the generator regulator chip can be ensured to avoid the risk of failure caused by voltage surges.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a generator regulator resistant to abnormal voltage surges, the generator regulator includes a generator regulator chip, the generator regulator chip includes a terminal P led out from the chip Pin pin, wherein the terminal P is used to connect to the stator output end of the generator; a resistor element R1 is arranged in series between the terminal P and the generator regulator chip Pin pin; the chip Pin pin corresponding to the terminal P is grounded via a transient voltage regulator diode ZD2.

[0006] The generator regulator chip also includes a terminal B+ terminal led out from the chip Pin pin, and the terminal B+ is used to connect to an external electrical appliance; the lead-out terminal on the loop between the terminal B+ and the chip Pin pin is grounded via a transient voltage regulator diode ZD1.

[0007] The transient voltage regulator diode ZD1 is a bidirectional transient voltage regulator diode.

[0008] The transient voltage regulator diode ZD2 is a bidirectional transient voltage regulator diode.

[0009] The chip Pin corresponding to the terminal P is grounded via a capacitor C2.

[0010] An alternating current generator comprises the generator regulator capable of withstanding abnormal voltage surge.

[0011] A car comprises the generator regulator capable of withstanding abnormal voltage surge or the AC generator.

[0012] The advantages of the utility model are: by designing a protection circuit for the P and B+ ends of the generator regulator, the safety and reliability of the generator regulator chip is ensured to avoid the risk of failure caused by voltage shock; conventional electrical components are used, which are low-cost and stable and reliable. By setting a resistor element between the external connection terminal of the regulator and the chip pin connection line, the external energy is reduced by the resistor voltage division through the connection line to reduce the abnormal energy impact value; by setting a transient voltage regulator diode between the external connection terminal of the regulator and the chip pin connection line, the diode specification should be smaller than the terminal's own withstand voltage value to play a protective role, and the voltage regulator diode should be set with a bidirectional voltage regulator to avoid reverse voltage shocks that cause diode failure, thereby causing abnormal short circuit failure of the motor. After the external energy is reduced by the resistor voltage division through the connection line, the remaining energy value will be absorbed by the transient voltage regulator diode; BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0014] Figure 1 It is a schematic diagram of pins and terminals of a generator regulator in the prior art;

[0015] Figure 2 A schematic diagram of a chip pin circuit of a generator regulator with abnormal voltage surge resistance provided in this embodiment. DETAILED DESCRIPTION

[0016] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0017] like Figure 1 As shown, it is a schematic diagram of the peripheral pins of the regulator chip in the prior art, wherein the regulator chip pin pins include terminal P, terminal B+, LIN, GND and other pins, wherein terminal P led out from the chip Pin pin is used to connect to the stator output terminal of the generator; terminal B+ led out from the chip Pin pin, terminal B+ is used to connect to an external electrical appliance. Existing products mostly rely on the voltage resistance design of the packaged chip itself, directly connecting the regulator chip pin feet to the external terminals, and their voltage resistance capacity depends entirely on the chip's own voltage resistance value. When there is instantaneous abnormal energy in the entire vehicle, the chip can often fail in a very short time, resulting in the problem of the motor not generating electricity. As shown in Figure 1 When there is instantaneous abnormal energy in the whole vehicle, it can be directly fed back to the chip of the generator regulator through terminal P and terminal B+, causing impact on the chip, thereby causing damage and failure of the chip, causing irreversible damage. The existing technology only relies on the voltage-resistant equipment of the packaged chip itself, which cannot guarantee safety requirements and cannot avoid the failure risk caused by voltage impact.

[0018] like Figure 2 As shown in FIG. 1 , it is an improved schematic diagram of a generator regulator designed to reduce the risk of chip failure caused by voltage shock in the prior art. Figure 2 As shown, a generator regulator resistant to abnormal voltage surge, the generator regulator chip includes a terminal P led out from the chip Pin pin, wherein the terminal P is used to connect to the stator output end of the generator; a resistor element R1 is set in series between the terminal P and the chip Pin pin; the chip Pin pin corresponding to the terminal P is grounded through a transient voltage regulator diode ZD2. The transient voltage regulator diode ZD1 is a bidirectional transient voltage regulator diode. Its working principle is to set a resistor element between the external connection terminal of the regulator and the chip pin connection line, so that the external energy can reduce the abnormal energy impact value through the resistor voltage division through the connection line; the chip Pin pin corresponding to the terminal P is grounded through a capacitor C2, and filtered by the capacitor C2 to filter out clutter and AC cost, thereby protecting the voltage impact entering the chip through the P terminal.

[0019] By setting a transient voltage zener diode between the external connection terminal of the regulator and the chip pin connection line, the diode specification should be smaller than the terminal's own withstand voltage value to play a protective role. At the same time, the voltage zener diode should be set as a bidirectional voltage zener tube to avoid reverse voltage shock causing diode failure, thereby causing abnormal short circuit failure of the motor. After the external energy is reduced by the resistor voltage divider through the connection line, the remaining energy value will be absorbed by the transient voltage zener diode.

[0020] Similarly, the generator regulator chip also includes a terminal B+ terminal led out from the chip Pin pin, and the terminal B+ is used to connect to an external electrical appliance; the terminal led out on the loop between the terminal B+ and the chip Pin pin is grounded through a transient voltage regulator diode ZD1. The transient voltage regulator diode ZD2 is a bidirectional transient voltage regulator diode, thereby realizing voltage impact protection for the B+ pin.

[0021] Based on the above scheme, its working principle includes: first, for terminal P, a resistor R1 is connected in series between it and the chip Pin pin, which can effectively limit the current voltage, achieve the purpose of voltage division, and reduce the voltage value that impacts the Pin pin, that is, by setting the resistor element, the external energy is reduced by the abnormal energy impact value through the resistor voltage division through the connection line; secondly, a transient voltage regulator diode is set between the chip Pin pin and terminal p. The diode has a bidirectional characteristic. The transient voltage regulator diode is set. The diode specification should be smaller than the terminal's own withstand voltage value to play a protective role. At the same time, the voltage regulator diode should be set with a bidirectional voltage regulator tube to avoid reverse voltage shocks that cause diode failure, thereby causing abnormal short circuit failure of the motor. After the external energy is reduced through the resistor voltage division through the connection line, the remaining energy value will be absorbed by the transient voltage regulator diode, so that the high voltage impact to the chip Pin pin can be effectively avoided, protecting the chip. Similarly, a bidirectional transient voltage regulator diode ZD1 is also set between terminal B+ and the chip pin for protection. At the same time, a capacitor is also set to ground the communication pin LIN terminal of the chip, that is, the LIN pin of the chip is grounded via capacitor C3 to achieve filtering of the voltage of the communication port.

[0022] The generator regulator circuit resistant to abnormal voltage surges in the above-mentioned embodiment is integrated into an AC generator to form a new AC generator, which also has the advantages of the above-mentioned generator regulator resistant to abnormal voltage surges and can realize the voltage shock resistance characteristic of the generator regulator.

[0023] The generator regulator circuit or AC generator resistant to abnormal voltage surges in the above-mentioned embodiments is applied to a car to form a new car. The generator regulator in the car has the characteristics of resistant to abnormal voltage surges introduced in the above-mentioned embodiments, ensuring the stable operation of the AC generator and avoiding failure caused by voltage surges.

[0024] The automotive AC generator regulator circuit solution provided in this embodiment reasonably sets the generator regulator peripheral protection circuit according to the energy impact path, first reduces the external energy impact value, and then absorbs it through the voltage regulator diode. At the same time, in order to avoid other abnormal failures caused by the added electronic components, according to the energy transfer path, the resistors in the terminal connection path are connected in series, the diodes are connected in parallel, and a bidirectional transient voltage regulator diode is selected to suppress the diode failure problem caused by the reverse voltage impact; at the same time, the components used are conventional electrical components, the number of components used is low, and the cost is low, which has the advantage of being popularized.

[0025] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A generator regulator resistant to abnormal voltage stamping, the generator regulator comprising a generator regulator chip, the generator regulator chip comprising a terminal P led out from a chip Pin, wherein the terminal P is used to connect to a stator output end of a generator; characterized in that: A resistor element R1 is connected in series between the terminal P and the generator regulator chip Pin; the chip Pin corresponding to the terminal P is grounded via a transient voltage regulator diode ZD2.

2. A generator regulator capable of withstanding abnormal voltage surge as claimed in claim 1, characterized in that: The generator regulator chip also includes a terminal B+ terminal led out from the chip Pin pin, and the terminal B+ is used to connect to an external electrical appliance; the lead-out terminal on the loop between the terminal B+ and the chip Pin pin is grounded via a transient voltage regulator diode ZD1.

3. A generator regulator capable of withstanding abnormal voltage surge as claimed in claim 2, characterized in that: The transient voltage regulator diode ZD1 is a bidirectional transient voltage regulator diode.

4. A generator regulator capable of withstanding abnormal voltage surge as claimed in claim 1 or 2, characterized in that: The transient voltage regulator diode ZD2 is a bidirectional transient voltage regulator diode.

5. A generator regulator capable of withstanding abnormal voltage surge as claimed in claim 1 or 2, characterized in that: The chip Pin corresponding to the terminal P is grounded via a capacitor C2.

6. An AC generator, characterized in that: The AC generator includes a generator regulator capable of withstanding abnormal voltage surges as described in any one of claims 1 to 5.

7. A car, characterized in that: The automobile comprises a generator regulator capable of withstanding abnormal voltage surges as claimed in any one of claims 1 to 5 or an AC generator as claimed in claim 6.

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