Energy storage converter

Abstract

The utility model provides an energy storage converter. The energy storage converter comprises a cabinet body, a cabinet door, a travel switch, an electromagnetic lock and a control circuit board, one end of the cabinet door is rotationally connected to the cabinet body, and the other end of the cabinet door is locked with the cabinet door through the electromagnetic lock; one end of the travel switch is fixedly arranged on the cabinet body, and the other end of the travel switch is fixedly arranged on the cabinet door. The electromagnetic lock is arranged in the cabinet body, and when the equipment runs, the cabinet door is locked by the electromagnetic lock, so that the cabinet door is prevented from being opened, and the electric shock risk is reduced. Meanwhile, when maintenance is needed, the control circuit board is arranged to limit the waiting time, the cabinet door is prevented from being opened when the capacitor is not completely discharged, and the electric shock risk is reduced. By arranging the travel switch, the opening and closing state information of the cabinet door is detected, and when the cabinet door is not closed, the energy storage converter cannot work.

Description

Technical Field

[0001] The utility model relates to the field of energy storage converters, in particular to an energy storage converter. Background Art

[0002] In order to avoid electric shock, the cabinet door cannot be opened during the normal operation of the energy storage converter. In addition, the power module, an important component of the cabinet, contains a large number of DC capacitors. After the energy storage converter is powered off, normal maintenance work can only be carried out after the capacitors are fully discharged.

[0003] Energy storage inverters in related technologies only require workers in the operating procedures or the manufacturer's user manual to "perform installation, testing and maintenance operations only after the main circuit breaker is disconnected and the power module is fully discharged for 10 minutes and the input power is completely disconnected", otherwise there is a risk of electric shock. In the event of illegal operation, that is, the cabinet door is opened when the energy storage inverter is running or the cabinet door is opened before the capacitor is fully discharged, electric shock may occur.

[0004] How to avoid electric shock caused by misoperation of energy storage converters is an urgent problem to be solved. Utility Model Content

[0005] The purpose of the utility model is to provide an energy storage converter.

[0006] In order to solve the above technical problems, the utility model provides an energy storage converter, comprising:

[0007] Cabinet body, cabinet door, travel switch, electromagnetic lock and control circuit board;

[0008] One end of the cabinet door is rotatably connected to the cabinet body, and the other end of the cabinet door is locked with the cabinet door by the electromagnetic lock;

[0009] One end of the travel switch is fixedly arranged on the cabinet body, and the other end is fixedly arranged on the cabinet door;

[0010] The travel switch and the electromagnetic lock are both electrically connected to the control circuit board;

[0011] A power module is fixedly arranged in the cabinet;

[0012] The control circuit board is electrically connected to the power module.

[0013] Further, the travel switch is configured to send cabinet door switch state information to the control circuit board;

[0014] The control circuit board is configured to control the operating state of the power module according to the cabinet door switch state information.

[0015] Furthermore, the control circuit board includes:

[0016] Circuit breaker QF, sampling board and time delay relay KT;

[0017] The collection end of the sampling plate is electrically connected to the contact of the circuit breaker QF and the contact of the travel switch respectively;

[0018] The control end of the sampling board is electrically connected to the coil of the time delay relay KT and the coil of the circuit breaker QF respectively;

[0019] The electromagnetic lock is connected in series with the contact of the time delay relay KT.

[0020] Furthermore, the sampling board is configured to detect the opening and closing states of the contacts of the travel switch and the opening and closing states of the contacts of the circuit breaker QF, and when the contacts of the travel switch are closed, that is, the travel switch sends the cabinet door opening information, at this time, if it is judged through the contacts of the circuit breaker QF that the power module is in a working state, the circuit breaker QF is controlled to break the circuit.

[0021] Furthermore, the circuit breaker QF includes an electric drive unit and a switch;

[0022] The electric drive unit is suitable for driving the switch to close and open the switch.

[0023] Furthermore, the sampling plate further comprises: a first contactor KM5 and a second contactor KM6;

[0024] The coils of the first contactor KM5 and the second contactor KM6 are both electrically connected to the control end of the sampling board;

[0025] The normally closed contact of the second contactor KM6 is connected in series with the coil of the first contactor KM5 and then grounded;

[0026] The contact of the first contactor KM5 is connected in series with the closing contact of the circuit breaker QF;

[0027] The remaining contacts of the second contactor KM6 are connected in series with the opening contacts of the circuit breaker QF.

[0028] Furthermore, the sampling board is also configured to control the delay relay KT to delay closing after receiving the power failure command, and then open the electromagnetic lock to open the cabinet door.

[0029] Furthermore, the delay time of the delay relay KT is M, and M is greater than the capacitor discharge time of the power module.

[0030] Furthermore, the energy storage converter also includes a control board;

[0031] The control board is electrically connected to the sampling board of the control circuit board;

[0032] The control board is electrically connected to the power module.

[0033] Furthermore, the energy storage converter also includes a communication module;

[0034] The control board is electrically connected to the communication module.

[0035] The beneficial effect of the utility model is that the utility model provides an energy storage converter, including: a cabinet, a cabinet door, a travel switch, an electromagnetic lock and a control circuit board; one end of the cabinet door is rotatably connected to the cabinet, and the other end of the cabinet door is locked with the cabinet door by the electromagnetic lock; one end of the travel switch is fixedly arranged on the cabinet, and the other end is fixedly arranged on the cabinet door; the travel switch and the electromagnetic lock are both electrically connected to the control circuit board; a power module is fixedly arranged in the cabinet; the control circuit board is electrically connected to the power module. An electromagnetic lock is arranged in the cabinet, and when the equipment is running, the electromagnetic lock will lock the cabinet door to prevent the cabinet door from being opened, thereby reducing the risk of electric shock. At the same time, when maintenance is required, the waiting time is limited by setting the control circuit board to avoid opening the cabinet door when the capacitor is not fully discharged, thereby reducing the risk of electric shock. By setting the travel switch, the cabinet door switch status information is detected, and when the cabinet door is not closed, the energy storage converter cannot work. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0037] Figure 1 It is a structural schematic diagram of the energy storage converter provided by an embodiment of the utility model.

[0038] Figure 2 It is a control principle diagram of the energy storage converter provided in the embodiment of the utility model.

[0039] Figure 3 It is a partial electrical schematic diagram of the low-voltage control part of the energy storage converter provided in the embodiment of the utility model.

[0040] Figure 4 It is a partial electrical schematic diagram of the high voltage control part of the energy storage converter provided in the embodiment of the utility model.

[0041] In the figure: 100, cabinet body; 200, cabinet door; 300, travel switch; 400, electromagnetic lock. DETAILED DESCRIPTION

[0042] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0043] For examples, see Figure 1-Figure 4 At least one embodiment provides an energy storage converter, including: a cabinet 100, a cabinet door 200, a travel switch 300, an electromagnetic lock 400 and a control circuit board; one end of the cabinet door 200 is rotatably connected to the cabinet 100, and the other end of the cabinet door 200 is locked with the cabinet door 200 through the electromagnetic lock; one end of the travel switch 300 is fixedly arranged on the cabinet 100, and the other end is fixedly arranged on the cabinet door 200; the travel switch 300 and the electromagnetic lock 400 are both electrically connected to the control circuit board; a power module is fixedly arranged in the cabinet 100; the control circuit board is electrically connected to the power module. An electromagnetic lock 400 is arranged in the cabinet 100. When the equipment is running, the electromagnetic lock 400 will lock the cabinet door 200 to prevent the cabinet door 200 from being opened, thereby reducing the risk of electric shock. At the same time, when maintenance is required, the waiting time is limited by setting the control circuit board to avoid opening the cabinet door 200 when the capacitor is not fully discharged, thereby reducing the risk of electric shock. By setting a travel switch, the switch status information of the cabinet door 200 is detected. When the cabinet door 200 is not closed, the energy storage converter cannot work.

[0044] The travel switch 300 is configured to send the switch status information of the cabinet door 200 to the control circuit board; the control circuit board is configured to control the operation status of the power module according to the switch status information of the cabinet door 200. Specifically, when the travel switch 300 detects that the cabinet door 200 is not closed, the energy storage converter does not work. When the energy storage converter is working, if the travel switch 300 detects that the cabinet door 200 is opened, at this time, the main circuit of the power module is immediately powered off through the control circuit board.

[0045] In some embodiments, the control circuit board includes: a circuit breaker QF, a sampling board and a time delay relay KT; the collection end of the sampling board is electrically connected to the contacts of the circuit breaker QF and the contacts of the travel switch 300 respectively; the control end of the sampling board is electrically connected to the coil of the time delay relay KT and the coil of the circuit breaker QF respectively; the electromagnetic lock 400 is connected in series with the contacts of the time delay relay KT.

[0046] Among them, the sampling board is configured to detect the opening and closing states of the contacts of the travel switch 300 and the opening and closing states of the contacts of the circuit breaker QF, and when the contacts of the travel switch 300 are closed, that is, the travel switch 300 sends the cabinet door 200 opening information, at this time, if it is judged through the contacts of the circuit breaker QF that the power module is in a working state, the circuit breaker QF is controlled to break the circuit.

[0047] In order to remotely close or open the circuit breaker QF, in at least one embodiment, the circuit breaker QF includes an electric drive unit and a knife switch; the electric drive unit is suitable for driving the knife switch to close and open. The knife switch is driven by the electric drive unit, and when a closing signal is received, the electric drive unit controls the knife switch to close, and when an opening signal is received, the electric drive unit controls the knife switch to open.

[0048] In order to further improve the safety of the circuit breaker QF, in at least one embodiment, the sampling board further includes: a first contactor KM5 and a second contactor KM6; the coils of the first contactor KM5 and the second contactor KM6 are both electrically connected to the control end of the sampling board; the normally closed contact of the second contactor KM6 is connected in series with the coil of the first contactor KM5 and then grounded; the contact of the first contactor KM5 is connected in series with the closing contact of the circuit breaker QF; the remaining contacts of the second contactor KM6 are connected in series with the opening contact of the circuit breaker QF. The electrical interlock is formed by the first contactor and the second contactor to improve the safety of the circuit breaker QF.

[0049] In some embodiments, the sampling board is further configured to control the delay relay KT to delay closing after receiving a power failure command, and then open the electromagnetic lock 400 to open the cabinet door 200 .

[0050] The delay time of the delay relay KT is M, and M is greater than the capacitor discharge time of the power module. By setting the delay time M of the delay relay KT, it is ensured that M is greater than the capacitor discharge time of the power module, thereby avoiding false touch when the capacitor is not fully discharged.

[0051] In at least one embodiment, M is 10 minutes.

[0052] In at least one embodiment, the energy storage converter further includes a control board, the control board is electrically connected to the sampling board of the control circuit board, and the control board is electrically connected to the power module. The power tube of the power module is controlled by the control board to complete the inversion.

[0053] In at least one embodiment, the energy storage inverter further includes a communication module; and the control board is electrically connected to the communication module.

[0054] In summary, the utility model provides an energy storage converter, including: a cabinet 100, a cabinet door 200, a travel switch 300, an electromagnetic lock 400 and a control circuit board; one end of the cabinet door 200 is rotatably connected to the cabinet 100, and the other end of the cabinet door 200 is locked with the cabinet door 200 through the electromagnetic lock; one end of the travel switch 300 is fixedly arranged on the cabinet 100, and the other end is fixedly arranged on the cabinet door 200; the travel switch 300 and the electromagnetic lock 400 are both electrically connected to the control circuit board; a power module is fixedly arranged in the cabinet 100; the control circuit board is electrically connected to the power module. An electromagnetic lock 400 is arranged in the cabinet 100. When the equipment is running, the electromagnetic lock 400 will lock the cabinet door 200 to prevent the cabinet door 200 from being opened, thereby reducing the risk of electric shock. At the same time, when maintenance is required, the waiting time is limited by setting the control circuit board to avoid opening the cabinet door 200 when the capacitor is not fully discharged, thereby reducing the risk of electric shock. By setting a travel switch, the switch status information of the cabinet door 200 is detected. When the cabinet door 200 is not closed, the energy storage converter cannot work.

[0055] The components selected in this application without specific structure description are all universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods. In addition, the software programs involved in this application are all prior art, and this application does not involve any improvement to the software programs.

[0056] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0058] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0059] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0060] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0061] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An energy storage converter, characterized in that: include: Cabinet body, cabinet door, travel switch, electromagnetic lock and control circuit board; One end of the cabinet door is rotatably connected to the cabinet body, and the other end of the cabinet door is locked with the cabinet door by the electromagnetic lock; One end of the travel switch is fixedly arranged on the cabinet body, and the other end is fixedly arranged on the cabinet door; The travel switch and the electromagnetic lock are both electrically connected to the control circuit board; A power module is fixedly arranged in the cabinet; The control circuit board is electrically connected to the power module.

2. The energy storage converter according to claim 1, characterized in that: The travel switch is configured to send cabinet door switch state information to the control circuit board; The control circuit board is configured to control the operating state of the power module according to the cabinet door switch state information.

3. The energy storage converter according to claim 1, characterized in that: The control circuit board comprises: Circuit breaker QF, sampling board and time delay relay KT; The collection end of the sampling plate is electrically connected to the contact of the circuit breaker QF and the contact of the travel switch respectively; The control end of the sampling board is electrically connected to the coil of the time delay relay KT and the coil of the circuit breaker QF respectively; The electromagnetic lock is connected in series with the contact of the time delay relay KT.

4. The energy storage converter according to claim 3, characterized in that: The sampling board is configured to detect the opening and closing states of the contacts of the travel switch and the opening and closing states of the contacts of the circuit breaker QF. When the contacts of the travel switch are closed, that is, the travel switch sends the cabinet door opening information, at this time, if it is judged through the contacts of the circuit breaker QF that the power module is in a working state, the circuit breaker QF is controlled to break the circuit.

5. The energy storage converter according to claim 4, characterized in that: The circuit breaker QF includes an electric drive unit and a switch; The electric drive unit is suitable for driving the switch to close and open the switch.

6. The energy storage converter according to claim 5, characterized in that: The sampling plate further comprises: a first contactor KM5 and a second contactor KM6; The coils of the first contactor KM5 and the second contactor KM6 are both electrically connected to the control end of the sampling board; The normally closed contact of the second contactor KM6 is connected in series with the coil of the first contactor KM5 and then grounded; The contact of the first contactor KM5 is connected in series with the closing contact of the circuit breaker QF; The remaining contacts of the second contactor KM6 are connected in series with the opening contacts of the circuit breaker QF.

7. The energy storage converter according to claim 3, characterized in that: The sampling board is also configured to control the delay relay KT to delay closing after receiving the power failure command, and then open the electromagnetic lock to open the cabinet door.

8. The energy storage converter according to claim 7, characterized in that: The delay time of the delay relay KT is M, and M is greater than the capacitor discharge time of the power module.

9. The energy storage converter according to claim 3, characterized in that: The energy storage converter also includes a control board; The control board is electrically connected to the sampling board of the control circuit board; The control board is electrically connected to the power module.

10. The energy storage converter according to claim 9, characterized in that: The energy storage converter also includes a communication module; The control board is electrically connected to the communication module.

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