Automatic energy conversion device in double-electricity combination form

Abstract

The utility model discloses an automatic energy conversion device in a double-electricity combination form, which is applied to conversion among energy components required by self-starting of an emergency generator on a ship. Starting energy sources suitable for the device are two sets of independent storage battery packs, namely a so-called double-power combination. A conversion assembly of the conversion device mainly comprises two sets of contactors which are interlocked: when a coil of a first contactor is electrified, a coil of a second contactor is de-electrified; and vice versa. The first storage battery pack is connected with the emergency generator through a normally open main contact of the first contactor, and the second storage battery pack is connected with the emergency generator through a normally open main contact of the second contactor. Through the device, the main starting energy source can be manually set, and when the main storage battery pack cannot normally start the emergency generator, the standby storage battery pack is automatically switched and started, so that the completion of self-starting of the emergency generator is ensured. And the main storage battery pack is regularly and alternately arranged, so that the service life of the double-power starting energy can be relatively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, in particular to an automatic energy conversion device in the form of a dual-electric combination. Background Art

[0002] Emergency generators, a common form of emergency power, are crucial for ensuring the necessary power supply after a main power outage and before normal power is restored. Their importance to ship safety is paramount, as they are crucial to the restoration of normal power.

[0003] In related art, emergency generators are typically equipped with two independent battery packs as starting energy sources. These two battery packs are selectively connected to the emergency generator via a switch mechanism, which typically includes a manual switch, typically a knife switch. If one of the battery packs fails to start the emergency generator, the crew must rush to the emergency generator, disconnect that battery pack from the generator using the knife switch, and then reconnect the other battery pack to the emergency generator. Manual operation of the knife switch causes a time delay in switching between the two battery packs, posing a significant safety hazard to ships facing a critical situation without normal power. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic energy conversion device in the form of a dual-battery combination. When the main battery pack connected to the emergency generator cannot start the emergency generator, it can automatically switch to the backup battery pack and connect to the emergency generator, realizing zero-time delay conversion and ensuring the normal starting of the emergency generator.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] Provided is a dual-battery combination automatic energy conversion device, which is applied to the automatic conversion of power supply between the first battery pack and the second battery pack of the emergency generator as self-starting energy sources. The dual-battery combination automatic energy conversion device includes:

[0007] The conversion assembly includes a first contactor and a second contactor, wherein the first contactor and the second contactor are interlocked, and when the coil of the first contactor is energized, the coil of the second contactor is de-energized; when the coil of the second contactor is energized, the coil of the first contactor is de-energized;

[0008] The first battery pack can be connected to the emergency generator via the normally open main contact of the first contactor, or the second battery pack can be connected to the emergency generator via the normally open main contact of the second contactor.

[0009] Optionally, the conversion component further includes:

[0010] a first self-resetting normally closed switch, connected in series with the normally closed contact of the second contactor and the coil of the first contactor to form a first control circuit;

[0011] A second self-resetting normally closed switch is connected in series with the normally closed contact of the first contactor and the coil of the second contactor to form a second control circuit.

[0012] Optionally, the conversion component further includes:

[0013] a first fuse connected in series in the first control circuit;

[0014] A second fuse is connected in series in the second control circuit.

[0015] Optionally, the conversion component further includes:

[0016] a first incoming line switch, connected in series to the first control circuit;

[0017] The second incoming line switch is connected in series to the second control circuit.

[0018] Optionally, the conversion component further includes:

[0019] a first diode, wherein the normally open main contact of the first contactor can be connected to the emergency generator through the first diode;

[0020] A second diode, through which the normally open main contact of the second contactor can be connected to the emergency generator.

[0021] Optionally, the conversion component further includes:

[0022] a first indicator light connected in series with the first normally open contact of the first contactor to form a first indication circuit, the first indicator light being used to indicate that the first battery pack is online;

[0023] A second indicator light is connected in series with the first normally open contact of the second contactor to form a second indication circuit. The second indicator light is used to indicate that the second battery pack is online.

[0024] Optionally, the conversion component further includes:

[0025] a third fuse connected in series to the first indication circuit;

[0026] A fourth fuse is connected in series in the second indicating circuit.

[0027] Optionally, the conversion component also includes a relay, the first normally open contact of the relay and the first normally open contact of the first contactor are connected in parallel and in series with the first indicator light, and the second normally open contact of the relay and the first normally open contact of the second contactor are connected in parallel and in series with the second indicator light.

[0028] Optionally, the conversion component further includes a self-resetting normally open switch, which is connected in series with the coil of the relay to form a third control circuit.

[0029] Optionally, the conversion component further includes a fifth fuse connected in series in the third control circuit.

[0030] Beneficial effects: The energy automatic conversion device in the dual-electric combination form provided by the utility model controls the coil of the first contactor to be energized so that the normally open main contact of the first contactor is connected, and because the first contactor and the second contactor are interlocked, the coil of the second contactor loses power, the normally open main contact of the second contactor is disconnected, and the first battery pack can be connected to the emergency generator through the normally open main contact of the first contactor; controls the coil of the second contactor to be energized so that the normally open main contact of the second contactor is connected, and because the first contactor and the second contactor are interlocked, the coil of the first contactor loses power, the normally open main contact of the first contactor is disconnected, and the second battery pack can be connected to the emergency generator through the normally open main contact of the second contactor. One of the first and second battery packs functions as the primary battery pack, while the other functions as a backup battery pack. If the primary battery pack connected to the emergency generator fails to start the generator, the backup battery pack automatically switches to the emergency generator, ensuring a seamless transition and ensuring the generator's normal startup. This ensures safe and reliable connection between the two battery packs and the emergency generator, ensuring zero downtime. Furthermore, during the emergency generator's operating cycle, the first and second battery packs can be switched using an automatic dual-battery energy conversion device, optimizing maintenance and extending the life of the starting energy component. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a circuit schematic diagram of the control circuit of the energy automatic conversion device in the form of a dual-electric combination provided by the utility model;

[0032] Figure 2 It is a structural schematic diagram of the conversion box provided by the utility model.

[0033] In the picture:

[0034] 110, first battery pack; 120, second battery pack;

[0035] 211. First contactor; 212. First self-resetting normally closed switch; 213. First fuse; 214. First incoming line switch; 215. First diode; 221. Second contactor; 222. Second self-resetting normally closed switch; 223. Second fuse; 224. Second incoming line switch; 225. Second diode; 231. First indicator light; 232. Third fuse; 241. Second indicator light; 242. Fourth fuse; 251. Relay; 252. Self-resetting normally open switch; 253. Fifth fuse; 260. Switching box;

[0036] 300. Emergency generator;

[0037] 400. Main control unit. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0039] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0040] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0042] Reference Figure 1 and Figure 2 As shown, this embodiment provides an automatic energy conversion device in the form of a dual-battery combination, which is applied to the first battery pack 110 and the second battery pack 120 of the emergency generator 300 as automatic power conversion between self-starting energy sources.

[0043] Specifically, the starting energy component includes a first battery pack 110 and a second battery pack 120 .

[0044] Specifically, the dual-electric combination automatic energy conversion device includes a conversion assembly, which includes a first contactor 211 and a second contactor 221. The first contactor 211 and the second contactor 221 form an interlocking structure. When the coil 1KM of the first contactor 211 is energized, the coil 2KM of the second contactor 221 is de-energized; when the coil 2KM of the second contactor 221 is energized, the coil 1KM of the first contactor 211 is de-energized. The first battery pack 110 can be connected to the emergency generator 300 via the normally open main contact 1KM-1 of the first contactor 211, or the second battery pack 120 can be connected to the emergency generator 300 via the normally open main contact 2KM-1 of the second contactor 221.

[0045] In this embodiment, the coil 1KM of the first contactor 211 is controlled to be energized so that the normally open main contact 1KM-1 of the first contactor 211 is connected. Since the first contactor 211 and the second contactor 221 are interlocked, the coil 2KM of the second contactor 221 is de-energized, and the normally open main contact 2KM-1 of the second contactor 221 is disconnected. The first battery pack 110 can be connected to the emergency generator 300 through the normally open main contact 1KM-1 of the first contactor 211. connected; by controlling the coil 2KM of the second contactor 221 to be energized, so that the normally open main contact 2KM-1 of the second contactor 221 is connected, and because the first contactor 211 and the second contactor 221 are interlocked, the coil 1KM of the first contactor 211 loses power, the normally open main contact 1KM-1 of the first contactor 211 is open, and the second battery pack 120 can be connected to the emergency generator 300 through the normally open main contact 2KM-1 of the second contactor 221. During the operating cycle of the emergency generator 300, one of the first battery pack 110 and the second battery pack 120 serves as the primary battery pack, and the other serves as the backup battery pack. If the primary battery pack connected to the emergency generator 300 fails to start the emergency generator 300, the backup battery pack can automatically switch to the emergency generator 300 for connection, achieving zero-delay switching and ensuring normal startup of the emergency generator 300. That is, the switching component can complete the connection between the two battery packs and the emergency generator 300 with zero time interval, which is safe and reliable.

[0046] It can be understood that one of the first battery group 110 and the second battery group 120 serves as the main battery group and the other serves as the backup battery group. During the working cycle of the emergency generator 300, the first battery group 110 and the second battery group 120 can rotate the main battery group through the setting of the energy automatic conversion device in the form of a dual-electric combination, optimize maintenance, and relatively extend the service life of the starting energy component.

[0047] It is understandable that, through the interlocking of the first contactor 211 and the second contactor 221 , the dual-electric combination energy automatic conversion device can remotely control the conversion of the power supply of the first battery pack 110 and the second battery pack 120 to the emergency generator 300.

[0048] Specifically, the automatic energy conversion device in the dual-electric combination form further includes a conversion box 260 , in which a first contactor 211 and a second contactor 221 are arranged to effectively ensure electricity safety.

[0049] In this embodiment, the conversion assembly further includes a first self-resetting normally closed switch 212 and a second self-resetting normally closed switch 222. The first self-resetting normally closed switch 212 is connected in series with the normally closed contact 2KM-2 of the second contactor 221 and the coil 1KM of the first contactor 211 to form a first control circuit; the second self-resetting normally closed switch 222 is connected in series with the normally closed contact 1KM-2 of the first contactor 211 and the coil 2KM of the second contactor 221 to form a second control circuit. By triggering the first self-resetting normally closed switch 212 or the second self-resetting normally closed switch 222, the conversion connection between the two battery packs and the emergency generator 300 can be quickly completed.

[0050] Specifically, the first self-resetting normally closed switch 212 and the second self-resetting normally closed switch 222 can be provided on the conversion box 260 and located outside the conversion box 260 to facilitate triggering the first self-resetting normally closed switch 212 and the second self-resetting normally closed switch 222.

[0051] For example, when the coil 1KM of the first contactor 211 is energized and the coil 2KM of the second contactor 221 is de-energized, the first self-resetting normally closed switch 212 is triggered, the first control circuit is disconnected, the coil 1KM of the first contactor 211 is de-energized, the normally open main contact 1KM-1 of the first contactor 211 is disconnected, and the normally closed contact 1KM-2 of the first contactor 211 is connected, so that the second control circuit is connected, the coil 2KM of the second contactor 221 is energized, and the normally open main contact 2KM-1 of the second contactor 221 is connected.

[0052] For example, when the coil 1KM of the first contactor 211 loses power and the coil 2KM of the second contactor 221 is energized, the second self-resetting normally closed switch 222 is triggered, the second control circuit is disconnected, the coil 2KM of the second contactor 221 loses power, the normally open main contact 2KM-1 of the second contactor 221 is disconnected, and the normally closed contact 2KM-2 of the second contactor 221 is connected, so that the first control circuit is connected, the coil 1KM of the first contactor 211 is energized, and the normally open main contact 1KM-1 of the first contactor 211 is connected.

[0053] In this embodiment, during the working cycle of the emergency generator 300, the main battery pack can be manually rotated by triggering the first self-resetting normally closed switch 212 or the second self-resetting normally closed switch 222, thereby optimizing maintenance and relatively extending the service life of the starting energy component.

[0054] For example, the first control circuit is connected to the first battery pack 110, and the second control circuit is connected to the second battery pack 120, which simplifies the circuit and facilitates inspection, maintenance, and troubleshooting of startup problems. Of course, the first control circuit and the second control circuit can also be powered by other power sources.

[0055] In one feasible embodiment, the conversion assembly further includes a first fuse 213 and a second fuse 223. The first fuse 213 is connected in series to the first control circuit, and the second fuse 223 is connected in series to the second control circuit. In this embodiment, the first fuse 213 can provide short-circuit protection for the first control circuit, and the second fuse 223 can provide short-circuit protection for the second control circuit to ensure safety.

[0056] Exemplarily, two first fuses 213 are provided and are connected in series to both ends of the first control circuit. It is understandable that both ends of the first control circuit are connected to the first battery pack 110 or other power source through the first fuses 213 respectively.

[0057] Exemplarily, two second fuses 223 are provided and are connected in series to the two ends of the second control circuit, respectively. It is understandable that the two ends of the second control circuit are connected to the second battery pack 120 or other power source through the second fuses 223, respectively.

[0058] In this embodiment, referring to Figure 1 As shown, the conversion assembly also includes a first incoming line switch 214 and a second incoming line switch 224. The first incoming line switch 214 is connected in series to the first control circuit, and the second incoming line switch 224 is connected in series to the second control circuit. In this embodiment, when troubleshooting and inspection maintenance are required, the first and second incoming line switches 214, 224 can be disconnected, and the corresponding components or circuits can be troubleshooted and replaced according to the electrical wiring diagram to ensure personal safety.

[0059] Exemplarily, the first incoming switch 214 may be a circuit breaker.

[0060] Exemplarily, the second incoming switch 224 may be a circuit breaker.

[0061] For example, after confirming that the dual-electric combination automatic energy conversion device is correctly wired, the first incoming line switch 214 and the second incoming line switch 224 are manually closed in sequence, or the second incoming line switch 224 and the first incoming line switch 214 are manually closed in sequence to put the first control circuit and the second control circuit into operation. The interval between closing the first incoming line switch 214 and the second incoming line switch 224 can be 2s to 3s to ensure safety.

[0062] For example, the first incoming line switch 214 and the second incoming line switch 224 may be disposed in a conversion box 260 .

[0063] In this embodiment, referring to Figure 1As shown, the conversion assembly further includes a first diode 215 and a second diode 225. The normally open main contact 1KM-1 of the first contactor 211 can be connected to the emergency generator 300 via the first diode 215; and the normally open main contact 2KM-1 of the second contactor 221 can be connected to the emergency generator 300 via the second diode 225, thereby protecting the circuit.

[0064] Specifically, the first diode 215 and the second diode 225 may be disposed in the conversion box 260 .

[0065] Exemplarily, the normally open main contact 1KM- 1 of the first contactor 211 and the first diode 215 are connected in parallel with the normally open main contact 2KM- 1 of the second contactor 221 and the second diode 225 .

[0066] In this embodiment, referring to Figure 1 and Figure 2 As shown, the conversion assembly further includes a first indicator light 231 and a second indicator light 241. The first indicator light 231 is connected in series with the first normally open contact 1KM-3 of the first contactor 211 to form a first indication circuit. The first indicator light 231 is used to indicate that the first battery pack 110 is online. The second indicator light 241 is connected in series with the first normally open contact 2KM-3 of the second contactor 221 to form a second indication circuit. The second indicator light 241 is used to indicate that the second battery pack 120 is online.

[0067] Specifically, the first indicator light 231 and the second indicator light 241 may be provided on and outside the conversion box 260 , so as to facilitate observation of the on / off status of the first contactor 211 and the second contactor 221 .

[0068] In this embodiment, when the coil 1KM of the first contactor 211 is energized and the coil 2KM of the second contactor 221 is de-energized, the first normally open contact 1KM-3 of the first contactor 211 is connected, the first indicator light 231 is energized and illuminates, the first normally open contact 2KM-3 of the second contactor 221 is disconnected, and the second indicator light 241 is de-energized and extinguished, thereby realizing the indication that the first battery pack 110 is online; when the coil 1KM of the first contactor 211 is de-energized and the coil 2KM of the second contactor 221 is energized, the second contactor 221 is de-energized. The first normally open contact 2KM-3 of the first contactor 221 is connected, the second indicator light 241 is energized and lights up, the first normally open contact 1KM-3 of the first contactor 211 is disconnected, and the first indicator light 231 is de-energized and extinguished, thereby realizing the indication that the second battery pack 120 is online, making it convenient to observe the on-off status of the normally open main contact 1KM-1 of the first contactor 211 and the normally open main contact 2KM-1 of the second contactor 221, and identifying the conversion connection between the first battery pack 110 and the second battery pack 120 and the emergency generator 300.

[0069] In one feasible embodiment, the conversion assembly further includes a third fuse 232 and a fourth fuse 242. Third fuse 232 is connected in series to the first indicator circuit, and fourth fuse 242 is connected in series to the second indicator circuit. In this embodiment, third fuse 232 provides short-circuit protection for the first indicator circuit, and fourth fuse 242 provides short-circuit protection for the second indicator circuit, to ensure safety.

[0070] Exemplarily, two third fuses 232 are provided and are connected in series to both ends of the first indication circuit. It is understandable that both ends of the first indication circuit are connected to the first battery pack 110 or the second battery pack 120 or other power sources through the third fuses 232.

[0071] Exemplarily, two fourth fuses 242 are provided and are connected in series to both ends of the second indication circuit. It is understandable that both ends of the second indication circuit are connected to the first battery pack 110 or the second battery pack 120 or other power sources through the fourth fuses 242 respectively.

[0072] In this embodiment, referring to Figure 1 and Figure 2 As shown, the conversion assembly further includes a relay 251. The first normally open contact 3KM-1 of the relay 251 is connected in parallel with the first normally open contact 1KM-3 of the first contactor 211 and then connected in series with the first indicator light 231. The second normally open contact 3KM-2 of the relay 251 and the first normally open contact 2KM-3 of the second contactor 221 are connected in parallel and then connected in series with the second indicator light 241. In this embodiment, the triggering relay 251 functions as a light test. It will be understood that by controlling the first normally open contact 3KM-1 and the second normally open contact 3KM-2 of the relay 251, both the first indicator light 231 and the second indicator light 241 can be energized and illuminated, thereby verifying whether the first indicator light 231 and the second indicator light 241 are functioning properly.

[0073] In one feasible embodiment, the conversion assembly further includes a self-resetting normally open switch 252, which is connected in series with the coil 3KM of the relay 251 to form a third control circuit. In this embodiment, triggering the self-resetting normally open switch 252 energizes the coil 3KM of the relay 251, establishing a path between the first normally open contact 3KM-1 and the second normally open contact 3KM-2 of the relay 251, facilitating verification of the proper functioning of the first indicator light 231 and the second indicator light 241.

[0074] Specifically, the self-resetting normally open switch 252 can be provided on the conversion box 260 and located outside the conversion box 260 to facilitate triggering the self-resetting normally open switch 252 .

[0075] In a feasible implementation, the conversion assembly further includes a fifth fuse 253, which is connected in series to the third control circuit. In this embodiment, the fifth fuse 253 can provide short-circuit protection for the third control circuit.

[0076] Exemplarily, two fifth fuses 253 are provided and are connected in series to both ends of the third control circuit. It is understandable that both ends of the third control circuit are connected to the first battery pack 110 or the second battery pack 120 or other power sources through the fifth fuses 253.

[0077] In this embodiment, the emergency generator 300 includes an electric starter motor (not shown), and the first battery pack 110 or the second battery pack 120 starts the emergency generator 300 via the electric starter motor.

[0078] In this embodiment, referring to Figure 1 As shown, the dual-electric combination automatic energy conversion device further includes a main control unit 400, which is electrically connected to the emergency generator 300 and is used to control the startup energy component to start the emergency generator 300. In this embodiment, when coil 1KM of the first contactor 211 is energized, the main control unit 400 receives a signal indicating a loss of main power and can control the first battery pack 110 to start the emergency generator 300. When coil 2KM of the second contactor 221 is energized, the main control unit 400 receives a signal indicating a loss of main power and can control the second battery pack 120 to start the emergency generator 300.

[0079] Specifically, the main control unit 400 includes a main control box (not shown), a controller (not shown) provided in the main control box, and a main control switch (not shown) connected to the controller. The input end of the main control switch is connected to the normally open main contact 1KM-1 of the first contactor 211 and the normally open main contact 2KM-1 of the second contactor 221. The output end of the main control switch is connected to the emergency generator 300. The main control switch is controlled by the controller, thereby controlling the first battery pack 110 or the second battery pack 120 to supply energy for starting the emergency generator 300.

[0080] For example, the main control unit 400 can be connected to the first battery pack 110 via the normally open main contact 1KM-1 of the first contactor 211, or connected to the second battery pack 120 via the normally open main contact 2KM-1 of the second contactor 221. That is, the main control unit 400 is powered by the first battery pack 110 or the second battery pack 120, which simplifies the wiring and facilitates inspection, maintenance, and troubleshooting of startup problems. Of course, the main control unit 400 can also be powered by other power sources.

[0081] In one feasible embodiment, the second normally open contact 1KM-4 of the first contactor 211 and the second normally open contact 2KM-4 of the second contactor 221 can be connected to the main control unit 400 to provide real-time feedback of the primary battery pack selection information to the main control unit 400. Of course, the second normally open contact 1KM-4 of the first contactor 211 and the second normally open contact 2KM-4 of the second contactor 221 can also be connected to other detection or alarm systems on the ship.

[0082] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An automatic energy conversion device in the form of a dual-electric combination, used for automatically converting power supply between a first battery pack (110) and a second battery pack (120) of an emergency generator (300) as a self-starting energy source, characterized in that: The dual-electric combination energy automatic conversion device includes: A conversion assembly comprises a first contactor (211) and a second contactor (221), wherein the first contactor (211) and the second contactor (221) form an interlock, and when the coil (1KM) of the first contactor (211) is energized, the coil (2KM) of the second contactor (221) is de-energized; when the coil (2KM) of the second contactor (221) is energized, the coil (1KM) of the first contactor (211) is de-energized; The first battery pack (110) can be connected to the emergency generator (300) via the normally open main contact (1KM-1) of the first contactor (211), or the second battery pack (120) can be connected to the emergency generator (300) via the normally open main contact (2KM-1) of the second contactor (221).

2. The dual-electric combination energy automatic conversion device according to claim 1 is characterized in that: The conversion components also include: A first self-resetting normally closed switch (212) is connected in series with a normally closed contact (2KM-2) of the second contactor (221) and a coil (1KM) of the first contactor (211) to form a first control circuit; A second self-resetting normally closed switch (222) is connected in series with the normally closed contact (1KM-2) of the first contactor (211) and the coil (2KM) of the second contactor (221) to form a second control circuit.

3. The dual-electric combination energy automatic conversion device according to claim 2 is characterized in that: The conversion component also includes: A first fuse (213) is connected in series to the first control circuit; A second fuse (223) is connected in series in the second control circuit.

4. The dual-electric combination energy automatic conversion device according to claim 2 is characterized in that: The conversion component also includes: A first incoming line switch (214), connected in series to the first control circuit; The second incoming line switch (224) is connected in series in the second control circuit.

5. The dual-electric combination energy automatic conversion device according to claim 1 is characterized in that: The conversion component also includes: a first diode (215), wherein the normally open main contact (1KM-1) of the first contactor (211) can be connected to the emergency generator (300) via the first diode (215); A second diode (225), the normally open main contact (2KM-1) of the second contactor (221) can be connected to the emergency generator (300) through the second diode (225).

6. The automatic energy conversion device of the dual-electric combination type according to any one of claims 1 to 5, characterized in that: The conversion component also includes: A first indicator light (231) is connected in series with a first normally open contact (1KM-3) of the first contactor (211) to form a first indication circuit, wherein the first indicator light (231) is used to indicate that the first battery pack (110) is online; A second indicator light (241) is connected in series with the first normally open contact (2KM-3) of the second contactor (221) to form a second indication circuit. The second indicator light (241) is used to indicate that the second battery pack (120) is online.

7. The dual-electric combination energy automatic conversion device according to claim 6 is characterized in that: The conversion component also includes: A third fuse (232) is connected in series to the first indication circuit; A fourth fuse (242) is connected in series to the second indicating circuit.

8. The dual-electric combination energy automatic conversion device according to claim 6 is characterized in that: The conversion assembly further comprises a relay (251); a first normally open contact (3KM-1) of the relay (251) and a first normally open contact (1KM-3) of the first contactor (211) are connected in parallel and then connected in series with the first indicator light (231); a second normally open contact (3KM-2) of the relay (251) and a first normally open contact (2KM-3) of the second contactor (221) are connected in parallel and then connected in series with the second indicator light (241).

9. The dual-electric combination energy automatic conversion device according to claim 8 is characterized in that: The conversion assembly further comprises a self-resetting normally open switch (252), which is connected in series with the coil (3KM) of the relay (251) to form a third control circuit.

10. The dual-electric combination energy automatic conversion device according to claim 9 is characterized in that: The conversion component further includes a fifth fuse (253) connected in series in the third control circuit.

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