CN215646174U - Transient high-voltage suppression device for starting and flameout of engineering machinery - Google Patents
Transient high-voltage suppression device for starting and flameout of engineering machinery Download PDFInfo
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- CN215646174U CN215646174U CN202121475198.0U CN202121475198U CN215646174U CN 215646174 U CN215646174 U CN 215646174U CN 202121475198 U CN202121475198 U CN 202121475198U CN 215646174 U CN215646174 U CN 215646174U
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Abstract
The utility model provides a transient high voltage suppression device for starting and flameout of engineering machinery, wherein components which are easy to generate transient high voltage comprise a generator and a motor, and the transient high voltage suppression device comprises a first TVS diode and a second TVS diode; wherein, the power supply end of the generator is connected with the power supply end of the motor; the first TVS diode is connected with the generator in parallel, the cathode of the first TVS diode is connected with the power supply end of the generator, and the anode of the first TVS diode is grounded; the second TVS diode is connected with the motor in parallel, the negative pole of the second TVS diode is connected with the power supply end of the motor, and the positive pole of the second TVS diode is grounded. Therefore, by adding TVS diodes at the generator and the motor, the impact of transient voltage on precision elements in an electrical system can be reduced, and the stability of the electrical system is improved.
Description
Technical Field
The utility model relates to the technical field of engineering machinery, in particular to a transient high-voltage suppression device used during starting and flameout of engineering machinery.
Background
Construction machines, such as excavators and tractors, are widely used in construction, and it is important that electrical systems in the construction machines operate safely and stably.
In the related art, when a generator and a motor are started or shut down, transient voltage is generated, and the transient voltage impacts sensitive elements in the engineering machinery and influences the stability of an electrical system.
SUMMERY OF THE UTILITY MODEL
The utility model provides a transient high-voltage suppression device for starting and extinguishing of engineering machinery, aiming at solving the technical problems, and the transient high-voltage suppression device can solve the problem that the electric elements are impacted at the moment of starting or extinguishing in the related art.
The technical scheme adopted by the utility model is as follows:
the embodiment of the utility model provides a transient high-voltage suppression device for starting and flameout of engineering machinery, wherein the engineering machinery comprises a generator and a motor, and the transient high-voltage suppression device comprises a first TVS diode and a second TVS diode;
wherein the power supply end of the generator is connected with the power supply end of the motor;
the first TVS diode is connected with the generator in parallel, the negative electrode of the first TVS diode is connected with the power supply end of the generator, and the positive electrode of the first TVS diode is grounded;
the second TVS diode is connected with the motor in parallel, the negative electrode of the second TVS diode is connected with the power supply end of the motor, and the positive electrode of the second TVS diode is grounded.
In addition, the transient high-pressure suppression device for starting and stopping of the engineering machine according to the embodiment of the utility model may further have the following additional technical features:
in some examples, the transient high pressure suppression device when the work machine is started and shut down further comprises: a first fuse; the first fuse is connected in series with the first TVS diode.
In some examples, the transient high pressure suppression device when the work machine is started and shut down further comprises: a second fuse; the second fuse is connected in series with the second TVS diode.
In some examples, the first TVS diode is model number SLD36U-017 MB.
In some examples, the model of the second TVS diode is the same as the model of the first TVS diode.
In some examples, the transient high pressure suppression device when the work machine is started and shut down further comprises: a first fuse holder on which the first fuse is mounted.
In some examples, the first fuse is model number mini10 and the first fuse holder is model number potter FHM0001 ZXJ.
In some examples, the transient high pressure suppression device when the work machine is started and shut down further comprises: a second fuse holder on which the second fuse is mounted.
In some examples, the second fuse is model number mini10A and the second fuse holder is model number potter FHM0001 ZXJ.
According to the technical scheme of the embodiment of the utility model, the TVS diodes are additionally arranged at the generator and the motor, so that the impact of transient voltage on precision elements in an electric system can be reduced, and the stability of the electric system is improved.
Drawings
Fig. 1 is a schematic structural diagram of a transient high-pressure suppression device when a construction machine starts and stops working according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a transient high voltage suppression device in accordance with an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a transient high-pressure suppression device when a construction machine starts and stops according to an example of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a transient high-pressure suppression device when a construction machine starts and stops working according to an embodiment of the present invention.
The components which are easy to generate transient high voltage in the engineering machinery comprise a generator and a motor. The engineering machine can comprise various types of machines such as an excavator, a tractor, a crane and the like in engineering application scenes.
As shown in fig. 1, the transient high voltage suppression device includes: a first TVS diode D1 and a second TVS diode D2.
The power supply end B1+ of the generator is connected with the power supply end B2+ of the motor; the first TVS diode D1 is connected in parallel with the generator 10, the cathode of the first TVS diode is connected to the power supply terminal B1+ of the generator 10, and the anode of the first TVS diode D1 is grounded to GND; the second TVS diode D2 is connected in parallel with the motor 20, the cathode of the second TVS diode D2 is connected to the power supply terminal B2+ of the motor, and the anode of the second TVS diode D2 is grounded to GND.
Specifically, in the practical application of the construction machine, when the generator 10 is started or shut down, a transient high voltage is generated, and when the two ends of the first TVS diode D1 are subjected to the transient high voltage impact, it changes the impedance value between the two ends from high impedance to low impedance at a speed of PS seconds, so as to absorb an instantaneous large current, and clamps the voltage across the two ends to a predetermined value, thereby protecting the following precision components from the impact of the transient high voltage spike.
When the motor 20 is started or shut down, a transient high voltage is generated, and when the two ends of the second TVS diode D2 are subjected to the transient high voltage impact, it changes the impedance value between the two ends from high impedance to low impedance at a speed of PS seconds to absorb a transient large current, and clamps the voltage between the two ends thereof at a predetermined value, thereby protecting the following precision components from the impact of the transient high voltage spike.
That is, TVS diodes are provided corresponding to the generator and the motor, respectively, so that the transient high voltage surge voltage is reduced by about 70% on average after passing through the TVS diodes. When two poles of the TVS diode are impacted by reverse transient high energy, the TVS diode can change the high impedance between the two poles into low impedance at the speed of 10 to the order of minus 12 seconds, absorb surge power of thousands of watts and clamp the voltage between the two poles at a preset value, thereby effectively protecting precise components in an electronic circuit from being damaged by various surge pulses.
Therefore, the transient high voltage suppression device for starting and extinguishing of the engineering machinery provided by the embodiment of the utility model can reduce the impact of transient voltage on precision elements in an electrical system and improve the stability of the electrical system by adding the TVS diodes at the generator and the motor.
The model of the first TVS diode D1 and the model of the second TVS diode D2 in the embodiment of the present invention may be the same or different.
In one example, the model number of the first TVS diode D1 and the model number of the second TVS diode D2 may be SLD36U-017 MB.
Fig. 2 is a schematic diagram of a transient high voltage suppression device in accordance with an embodiment of the present invention.
As shown in fig. 2, in order to reduce the impact of the transient high voltage on the protected circuit, a TVS diode may be connected in parallel to the protected circuit, and a fluctuation curve of the transient high voltage generated at the moment of starting or extinguishing may be shown in fig. 2, where the transient current flows into the protected circuit after being shunted by the TVS diode, the current flowing into the protected circuit is small, and after the transient current flows through the TVS, the voltages at two sides of the protected circuit may be shown in the clamp voltage shown in fig. 2. Compared with the fluctuation degree of the transient voltage, the fluctuation degree of the clamping voltage is smaller and more stable.
In one example of the present invention, as shown in fig. 3, the transient high voltage suppression device may further include a first fuse F1. The first fuse F1 is connected in series with the first TVS diode D1, for example, one end of the first fuse F1 is connected to the anode of the first TVS diode D1, and the other end of the first fuse F1 is connected to the ground GND.
Referring to fig. 3, the transient high voltage suppression device may further include a second fuse F2. The second fuse F2 is connected in series with the second TVS diode D2, for example, one end of the second fuse F2 is connected to the anode of the second TVS diode D2, and the other end of the second fuse F2 is connected to the ground GND.
Further, the transient high voltage suppression device may further include a first fuse holder on which the first fuse F1 is mounted. The type of the first fuse F1 can be mini10, and the type of the first fuse holder can be Litter FHM0001 ZXJ.
Still further, the transient high voltage suppression device may further include a second fuse holder on which the second fuse F2 is mounted. The type of the second fuse F2 can be mini10A, and the type of the second fuse holder is Litter FHM0001 ZXJ.
Referring to fig. 3, the construction machine may further include a power supply 30, and the power supply 30 is connected to a power supply terminal B1+ of the generator 10 and a power supply terminal B2+ of the motor 20, respectively. The power supply 30 may be a battery or the like.
Through first fuse F1 and second fuse F2, can realize the guard action, avoid electrical equipment to damage, be favorable to promoting system operation security.
It should be noted that verification of the transient high voltage suppression device of the present invention can result in: before the second TVS diode is not added, the voltage fluctuation at two ends of the motor is large, the maximum voltage is 121V, and the minimum voltage is-94V; after the second TVS diode, the voltage fluctuation across the motor is small, 47V at maximum and-6V at minimum; before the first TVS diode is not added, the voltage fluctuation at two ends of the generator is large, the maximum voltage is 92V, and the minimum voltage is-111V; after adding the first TVS diode, the voltage fluctuation across the generator is small, 53V maximum, 0V minimum.
Therefore, the TVS diodes are respectively added at the generator and the motor, so that the voltage fluctuation degree at two ends of the generator and the motor is greatly reduced, and the stability of a subsequent electrical system is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A transient high voltage suppression device for starting and flameout of a construction machine is characterized in that the construction machine comprises a generator and a motor, and the transient high voltage suppression device comprises a first TVS diode and a second TVS diode;
wherein the power supply end of the generator is connected with the power supply end of the motor;
the first TVS diode is connected with the generator in parallel, the negative electrode of the first TVS diode is connected with the power supply end of the generator, and the positive electrode of the first TVS diode is grounded;
the second TVS diode is connected with the motor in parallel, the negative electrode of the second TVS diode is connected with the power supply end of the motor, and the positive electrode of the second TVS diode is grounded.
2. The transient high pressure suppression device when a working machine is started and shut down as set forth in claim 1, further comprising: a first fuse;
the first fuse is connected in series with the first TVS diode.
3. The transient high pressure suppression device when a working machine is started and shut down as set forth in claim 1, further comprising: a second fuse;
the second fuse is connected in series with the second TVS diode.
4. The transient high voltage suppression device when the construction machine is started and shut down as claimed in claim 1, wherein said first TVS diode is model number SLD36U-017 MB.
5. The transient high voltage suppression device when a work machine is started and shut down as claimed in claim 4, wherein said second TVS diode is the same type as said first TVS diode.
6. The transient high pressure suppression device when a working machine is started and shut down as claimed in claim 2, further comprising a first fuse holder, said first fuse being mounted on said first fuse holder.
7. The transient high pressure suppression device when a construction machine is started and shut down as claimed in claim 6, wherein said first fuse is of type mini10 and said first fuse holder is of type Strett FHM0001 ZXJ.
8. The transient high voltage suppression device when a working machine is started and shut down as claimed in claim 3, further comprising a second fuse holder, said second fuse being mounted on said second fuse holder.
9. The transient high pressure suppression device when a construction machine is started and shut down as claimed in claim 8, wherein said second fuse is of type mini10A and said second fuse holder is of type ford FHM0001 ZXJ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121475198.0U CN215646174U (en) | 2021-06-30 | 2021-06-30 | Transient high-voltage suppression device for starting and flameout of engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121475198.0U CN215646174U (en) | 2021-06-30 | 2021-06-30 | Transient high-voltage suppression device for starting and flameout of engineering machinery |
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| Publication Number | Publication Date |
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| CN215646174U true CN215646174U (en) | 2022-01-25 |
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| CN202121475198.0U Active CN215646174U (en) | 2021-06-30 | 2021-06-30 | Transient high-voltage suppression device for starting and flameout of engineering machinery |
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2021
- 2021-06-30 CN CN202121475198.0U patent/CN215646174U/en active Active
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