Power supply starting circuit of energy storage converter

Abstract

The utility model discloses a power supply starting circuit of an energy storage converter. The power supply starting circuit of the energy storage converter comprises a debugging power supply input end, a working power supply input end, and a change-over switch arranged between the debugging power supply input end and the working power supply input end. A working circuit of the energy storage converter is internally provided with a first load connection circuit, a second load connection circuit and an electromagnetic switching circuit mechanism used for switching the connection state of the first load connection circuit and the second load connection circuit, and the electromagnetic switching circuit mechanism is connected to a loop where the debugging power supply input end is located. The debugging power supply input end and the working power supply input end are integrated in the same starting circuit, so that the circuit arrangement structure of the energy storage converter is simplified, the input of the two groups of power supplies is ensured to be mutually independent based on the change-over switch, and the debugging and working state switching safety of the energy storage converter is improved.

Description

Technical Field

[0001] This utility model relates to the field of energy storage converter technology, specifically to a power supply start-up circuit for an energy storage converter. Background Technology

[0002] Energy storage converters are electrical devices that convert DC input current into AC operating current. In application scenarios, energy storage converters require commissioning and operation to ensure their normal operation. Currently, the commissioning and operating circuits of energy storage converters are independently set up, resulting in a complex internal circuit structure and affecting the ease of wiring. Furthermore, the switching between commissioning and operating states is currently mainly done manually by operators, making the process cumbersome and prone to wiring errors that could lead to short circuits, thus compromising the safety of the energy storage converter. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides a power supply start-up circuit for an energy storage converter. By integrating the debugging power input terminal and the working power input terminal into the same start-up circuit, the circuit layout structure of the energy storage converter is simplified. Based on the switching switch, the input of the two power supplies is ensured to be independent of each other, thereby improving the safety of the debugging and working state switching of the energy storage converter.

[0004] This utility model provides a power supply start-up circuit for an energy storage converter, the power supply start-up circuit for the energy storage converter includes: a debugging power input terminal, a working power input terminal, and a switching switch between the debugging power input terminal and the working power input terminal;

[0005] The working circuit of the energy storage converter is provided with a first load connection circuit, a second load connection circuit, and an electromagnetic switching mechanism for switching the connection state of the first load connection circuit and the second load connection circuit. The electromagnetic switching mechanism is connected to the circuit where the debugging power input terminal is located.

[0006] Furthermore, the switching switch includes a first switch and a second switch;

[0007] The first switch is located in the circuit loop where the debugging power input terminal is located, and the second switch is located in the circuit loop where the working power input terminal is located.

[0008] Furthermore, the electromagnetic switching mechanism is connected to the circuit loop where the debugging power input terminal is located.

[0009] Furthermore, the second load connection circuit is in a normally closed state.

[0010] Furthermore, the switching switch includes a first switch and a second switch, wherein the first switch is disposed in the circuit loop where the debugging power input terminal is located;

[0011] The second switch is located in the circuit loop where the working power input terminal is located.

[0012] Furthermore, the switching switch includes a driving element and a linkage rod, with the first switch disposed at one end of the linkage rod and the second switch disposed at the other end of the linkage rod. The first switch is provided with a first contact connected to the circuit loop where the debugging power input terminal is located, and the second switch is provided with a second contact connected to the circuit loop where the working power input terminal is located.

[0013] Furthermore, a cam block is provided on the output shaft of the drive component, and a semi-circular mating groove is provided at the middle position of the linkage rod, with the cam block located within the semi-circular mating groove.

[0014] Furthermore, the driving element is configured as a drive motor, or the driving element is configured as a lever structure.

[0015] Furthermore, a DC isolation switch is provided in the circuit loop where the debugging power input terminal is located.

[0016] Furthermore, the energy storage converter is equipped with an AC disconnect switch, which is located in the circuit where the output terminal of the energy storage converter is located.

[0017] This utility model provides a power supply start-up circuit for an energy storage converter. By integrating the debugging power input terminal and the working power input terminal of the energy storage converter into the same start-up circuit, the circuit layout structure of the energy storage converter is effectively simplified. The switching of the electrical conduction state is based on the switching switch, ensuring the independence between the debugging power input terminal and the working power input terminal, thereby improving the working safety of the energy storage converter. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the power supply and start-up circuit of the energy storage converter in this embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the switching switch in an embodiment of this utility model;

[0021] Figure 3 This is a cross-sectional view of the switching switch in an embodiment of this utility model. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Figure 1 The diagram shows a schematic of the power supply start-up circuit of the energy storage converter in an embodiment of the present invention. The power supply start-up circuit of the energy storage converter includes: a debugging power input terminal 1, a working power input terminal 2, and a switching switch 3 that sets the switching between the debugging power input terminal 1 and the working power input terminal 2. By integrating the debugging power input terminal 1 and the working power input terminal 2 into the same circuit, the circuit layout structure of the energy storage converter can be simplified, thereby improving the simplicity of the structural layout of the energy storage converter.

[0024] The working circuit of the energy storage converter is provided with a first load connection circuit 5, a second load connection circuit 6, and an electromagnetic switching mechanism 4 for switching the connection state of the first load connection circuit 5 and the second load connection circuit 6. Based on the electromagnetic switching mechanism 4, the output load of the energy storage converter can be switched, so that the energy storage converter can switch different load terminals so that the output of the energy storage converter can meet the power demand of the load terminal.

[0025] The electromagnetic switching mechanism 4 can be connected to the circuit where the debugging power input terminal 1 is located. When the circuit where the debugging power input terminal 1 is located is in a conducting state, the electromagnetic switching mechanism 4 can be in a working state, so that the first load connection circuit 5 is in a conducting state, while cutting off the conducting state of the second load connection circuit 6, so that the energy storage converter is in the equipment debugging state.

[0026] Furthermore, the second load connection circuit 6 is normally closed, meaning that the energy storage converter is connected to the load device based on the second load connection circuit 6, so that when the energy storage converter is connected to the working power input terminal 2, the energy storage converter can be in normal working condition.

[0027] Specifically, the circuit loop where the debugging power input terminal 1 is located is equipped with a DC disconnect switch 11, a DC buffer module 12, a DC filter module 13, a converter module 14, an AC buffer module 15, and an AC filter module 16. The DC disconnect switch 11 is used as a fuse switch. When a short circuit occurs in the circuit loop where the debugging power input terminal 1 is located, the circuit loop where the debugging power input terminal 1 is located is isolated by the DC disconnect switch 11, thereby ensuring the safety of the circuit structure of the energy storage converter.

[0028] Furthermore, the DC current input at the debugging power input terminal 1 passes through the DC buffer module 12 and the DC filter module 13 in sequence, and is then converted into AC current by the converter module 14. The AC current output by the converter module 14 then passes through the AC buffer module 15 and the AC filter module 16 in sequence, thereby outputting AC current that meets the load requirements at the output terminal of the energy storage converter.

[0029] Furthermore, the circuit loop where the working power input terminal 2 is located is equipped with the same electronic module as the circuit loop where the debugging power input terminal 1 is located, in order to meet the normal operation requirements of the energy storage converter.

[0030] Specifically, the output terminal of the energy storage converter is equipped with an AC disconnect switch 17. When a short circuit occurs in the output circuit of the energy storage converter, the AC disconnect switch 17 can promptly disconnect the output circuit of the energy storage converter to ensure the safe use of the energy storage converter.

[0031] Specifically, Figure 2 A schematic diagram of the switching switch in an embodiment of this utility model is shown. Figure 3 A cross-sectional view of the switching switch in an embodiment of the present invention is shown. The switching switch 3 includes a first switch 33 and a second switch 34. The first switch 33 is disposed in the circuit loop where the debugging power input terminal 1 is located, and controls the conduction state of the circuit where the debugging power input terminal 1 is located based on the first switch 33. The second switch 34 is disposed in the circuit loop where the working power input terminal 2 is located, and controls the conduction state of the circuit where the working power input terminal 2 is located based on the second switch 34, so that the energy storage converter can be in the working state.

[0032] Furthermore, the first switch 33 and the second switch 34 are linked, so that when the first switch 33 is in the conducting state, the second switch 34 can be in the disconnected state; when the first switch 33 is in the disconnected state, the second switch 34 can be in the conducting state, thereby realizing the linkage control of the working state of the debugging power input terminal 1 and the working power input terminal 2, and avoiding the energy storage converter from being connected to the debugging power supply and the working power supply at the same time.

[0033] Specifically, the switching switch 3 includes a driving component 31 and a linkage rod 32. The first switch 33 is disposed at one end of the linkage rod 32, and the second switch 34 is disposed at the other end of the linkage rod 32. The first switch 33 is provided with a first contact connected to the circuit where the debugging power input terminal 1 is located, and the second switch 34 is provided with a second contact connected to the circuit where the working power input terminal 2 is located.

[0034] A cam block 311 is provided on the output shaft of the drive member 31, and a semi-circular mating groove is provided at the middle position of the linkage rod 32. The cam block 311 is located in the semi-circular mating groove. The drive member 31 drives the linkage rod 32 based on the cam block 311. The rotation center of the cam block 311 and the center of the semi-circular mating groove are located on the same horizontal plane. The drive member 31 drives the cam block 311 to rotate, so that the cam block 311 drives the linkage rod 32 to lift and deflect.

[0035] When the first switch 33 is connected to the circuit where the debugging power input terminal 1 is located, when the driving member 31 drives the cam block 311 to rotate, the protruding part of the cam block 311 can drive the linkage rod 32 to rise, thereby disconnecting the electrical connection between the first switch 33 and the circuit where the debugging power input terminal 1 is located; the rotation of the protruding part of the cam block 311 can drive the linkage rod 32 to deflect, thereby electrically connecting the second switch 34 to the circuit where the working power input terminal 2 is located.

[0036] Furthermore, when the second switch 34 is connected to the circuit where the working power input terminal 2 is located, when the driving member 31 drives the cam block 311 to rotate, the protruding part of the cam block 311 can drive the linkage rod 32 to rise, thereby disconnecting the electrical connection between the second switch 34 and the circuit where the working power input terminal 2 is located; the rotation of the protruding part of the cam block 311 can drive the linkage rod 32 to deflect, thereby electrically connecting the first switch 33 to the circuit where the debugging power input terminal 1 is located.

[0037] Furthermore, the drive unit 31 can be configured as a drive motor, which is a small-capacity starter motor. The drive motor is driven and controlled by a control signal, so that the debugging mode and the working mode of the energy storage converter can be quickly switched.

[0038] Furthermore, the drive unit 31 can also be configured as a lever structure, allowing for manual switching by staff to quickly switch between the commissioning mode and the operating mode of the energy storage converter.

[0039] This utility model embodiment provides a power supply start-up circuit for an energy storage converter. By integrating the debugging power input terminal 1 and the working power input terminal 2 of the energy storage converter into the same start-up circuit, the circuit layout structure of the energy storage converter is effectively simplified. The switching of the electrical conduction state is based on the switching switch 3, ensuring the independence between the debugging power input terminal 1 and the working power input terminal 2, thereby improving the working safety of the energy storage converter.

[0040] Furthermore, the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A power supply start-up circuit for an energy storage converter, characterized in that, The power supply startup circuit of the energy storage converter includes: a debugging power input terminal, a working power input terminal, and a switching switch between the debugging power input terminal and the working power input terminal; The working circuit of the energy storage converter is provided with a first load connection circuit, a second load connection circuit, and an electromagnetic switching mechanism for switching the connection state of the first load connection circuit and the second load connection circuit. The electromagnetic switching mechanism is connected to the circuit where the debugging power input terminal is located.

2. The power supply start-up circuit for the energy storage converter as described in claim 1, characterized in that, The switching switch includes a first knife switch and a second knife switch; The first switch is located in the circuit loop where the debugging power input terminal is located, and the second switch is located in the circuit loop where the working power input terminal is located.

3. The power supply start-up circuit for the energy storage converter as described in claim 1, characterized in that, The electromagnetic switching mechanism is connected to the circuit loop where the debugging power input terminal is located.

4. The power supply start-up circuit of the energy storage converter as described in claim 1, characterized in that, The second load connection circuit is normally closed.

5. The power supply start-up circuit for the energy storage converter as described in claim 1, characterized in that, The switching switch includes a first switch and a second switch, wherein the first switch is disposed in the circuit loop where the debugging power input terminal is located; The second switch is located in the circuit loop where the working power input terminal is located.

6. The power supply start-up circuit for the energy storage converter as described in claim 5, characterized in that, The switching switch includes a driving element and a linkage rod. The first switch is disposed at one end of the linkage rod, and the second switch is disposed at the other end of the linkage rod. The first switch has a first contact connected to the circuit loop where the debugging power input terminal is located, and the second switch has a second contact connected to the circuit loop where the working power input terminal is located.

7. The power supply start-up circuit for the energy storage converter as described in claim 6, characterized in that, A cam block is provided on the output shaft of the drive component, and a semi-circular mating groove is provided at the middle position of the linkage rod, with the cam block located within the semi-circular mating groove.

8. The power supply start-up circuit for the energy storage converter as described in claim 6, characterized in that, The driving component is configured as a drive motor, or the driving component is configured as a lever structure.

9. The power supply start-up circuit for the energy storage converter as described in claim 1, characterized in that, A DC isolation switch is installed in the circuit loop where the debugging power input terminal is located.

10. The power supply start-up circuit of the energy storage converter as described in claim 1, characterized in that, The energy storage converter is equipped with an AC disconnect switch, which is located in the circuit where the output terminal of the energy storage converter is located.

Images