Auxiliary power management system of aerial work platform and control method thereof

Abstract

This invention provides an auxiliary power management system and control method for an aerial work platform vehicle, including a turntable control box, an electrical centralized control assembly, a main power supply, an auxiliary power supply, and an emergency motor. The turntable control box is directly connected to both the auxiliary power supply and the main power supply via the electrical centralized control assembly. The auxiliary power supply is also indirectly connected to the electrical centralized control assembly via an auxiliary power supply charger. The output of the main power supply is also indirectly connected to the electrical centralized control assembly via a DC-DC converter. The main power supply is charged via a charger connected to the external power grid, and the charger is connected to the electrical centralized control assembly. By setting time relays, charging wake-up relays, system power conversion relays, and emergency power contactors to correspond to the status of the auxiliary battery when the machine is powered on, during charging, and in emergency situations, the invention addresses the instability problem when the machine is powered on, the problem of insufficient auxiliary battery charge during charging, and the problem of inconvenience in detecting the auxiliary battery status in emergency situations.

Description

Technical Field

[0001] This invention relates to an auxiliary power management system for an aerial work platform, specifically an auxiliary power management system and control method for an aerial work platform, belonging to the field of aerial work equipment. Background Technology

[0002] Aerial work platforms are powered by either diesel or electric power, with lithium batteries being the mainstream choice in the industry. Lithium batteries require an auxiliary battery (12V lead-acid battery) for activation. The auxiliary battery serves to activate the lithium battery and act as an emergency power source. If the platform is not used for an extended period, is not charged, or is overused due to excessive use of the emergency power source, the auxiliary battery will become depleted and its voltage will be too low to activate the lithium battery, preventing the entire machine from powering on and causing a series of problems.

[0003] To address this issue, the first conventional solution involves the main charger supplying power to the auxiliary battery charger during charging. The auxiliary battery charger then converts the voltage supplied by the main charger into the charging voltage required by the auxiliary battery (the voltages of lithium batteries and auxiliary batteries are different). In this solution, once the lithium battery is fully charged, the main charger stops working regardless of whether the auxiliary battery is fully charged, and consequently, the auxiliary battery charger also stops working. This can easily lead to the auxiliary battery frequently failing to fully charge, thus affecting its lifespan.

[0004] The second conventional solution involves directly charging the auxiliary battery via the DC-DC converter powering the main system when the device is powered on. This ensures the auxiliary battery remains fully charged. However, this solution places a heavy load on the DC-DC converter, which must power both the main system and the auxiliary battery. Prolonged use of this load can shorten the converter's lifespan and pose a risk of sudden power outages. Furthermore, this solution uses a parallel connection between the main power supply and the emergency power supply, both simultaneously powering the system. If the main power supply fails, the emergency power supply will continue to provide power. If the user is not careful, the auxiliary battery may be drained to a low charge, severely impacting its lifespan. Summary of the Invention

[0005] Purpose of the invention: To address the shortcomings of existing technologies, this invention provides an auxiliary power management system and control method for aerial work platforms. By setting time relays, charging wake-up relays, system power conversion relays, and emergency power contactors to correspond to the status of the auxiliary battery when the platform is powered on, during charging, and in emergency situations, this invention solves the problems of instability when the platform is powered on, insufficient auxiliary battery power storage during charging, and difficulty in detecting the auxiliary battery status in emergency situations.

[0006] Technical solution: An auxiliary power management system for an aerial work platform includes a turntable control box, an electrical centralized control assembly, a main power supply, an auxiliary power supply, and an emergency motor. The turntable control box includes an electrical distribution box and a turntable controller. The turntable control box is directly connected to both the auxiliary power supply and the main power supply via the electrical centralized control assembly. The auxiliary power supply is also indirectly connected to the electrical centralized control assembly via an auxiliary power supply charger. The output of the main power supply is also indirectly connected to the electrical centralized control assembly via a DC-DC converter. The main power supply is charged by connecting to the external power grid via a charger, and the charger is connected to the electrical centralized control assembly.

[0007] This invention issues commands through the turntable control box, which are then converted into corresponding working states via the centralized electrical control assembly, including power-on state, charging state, and emergency state.

[0008] The main power supply is directly connected to the electrical centralized control assembly. When powered on, the electrical centralized control assembly connects the circuit, thereby enabling the main power supply to discharge and charge the auxiliary power supply after being activated, ensuring the energy storage of the auxiliary power supply.

[0009] The main power supply is also indirectly connected to the electrical centralized control assembly through a DC-DC converter. After the main power supply is activated, the high voltage is converted to low voltage through the DC-DC converter to supply power to the whole system.

[0010] The charger is connected to the electrical centralized control assembly during charging, which enables it to charge the auxiliary power supply while charging the main power supply, thus ensuring the energy storage of the auxiliary power supply.

[0011] In an emergency, a control signal is sent through the turntable control box, and after processing by the electrical centralized control assembly, the system power supply is switched from the main power supply to the auxiliary power supply to ensure the safety of the whole machine.

[0012] In order to enable the auxiliary power supply to charge when the whole machine is powered on, the electrical centralized control assembly includes a charging wake-up relay and a time relay. The electrical distribution box is connected to the charging wake-up relay through the time relay. The input terminal of the charging wake-up relay is connected to the main power supply, and the output terminal is connected to the auxiliary power charger.

[0013] When the machine is powered on, the auxiliary power supply of the key switch is first turned on to provide constant power to the key switch and output an activation signal to the main power supply. The positive and negative terminals of the auxiliary power supply are connected to the main power supply to output activation current. The main power supply is activated and converts the high voltage output to low voltage through a DC-DC converter to power the system. After the turntable controller is powered on, the time relay is energized and then engages after 4 seconds. The charging wake-up relay is energized, and the main power supply supplies power to the auxiliary power charger through the charging wake-up relay, so that the auxiliary power supply can also be charged when the machine is powered on.

[0014] When the device is being charged, the charger charges the main power supply while simultaneously activating the relay to provide power to the auxiliary power charger, thus enabling the auxiliary power supply to charge while the device is charging.

[0015] The charging wake-up relay (21) includes a normally open contact and a normally closed contact, and the charger (8) is connected to the normally closed contact of the input terminal of the charging wake-up relay (21).

[0016] To enable the system to switch operating power in emergency mode, the centralized electrical control assembly also includes a system power conversion relay, an emergency power contactor, and a circuit breaker. The input terminal of the system power conversion relay is connected to the auxiliary power supply and the DC-DC converter, respectively, and the output terminal is connected to the electrical distribution box. The signal input terminal of the emergency power contactor is connected to the emergency switch on the electrical distribution box. The input terminal of the emergency power contactor contact is connected to the auxiliary power supply, and the output terminal is connected to the emergency motor through the circuit breaker. The emergency power contactor is signal-connected to the system power conversion relay.

[0017] The system power switching relay includes a normally open contact and a normally closed contact. After a power switching signal is issued, the normally open contact closes and the normally closed contact opens, and the output terminal is connected to the electrical distribution box, thereby realizing the switching of the system power.

[0018] To enable monitoring of the auxiliary power supply and facilitate operators' understanding of the equipment status, the centralized electrical control assembly also includes an auxiliary power meter and a power meter wake-up relay. The turntable control box is connected to the auxiliary power meter via the power meter wake-up relay. The auxiliary power meter is connected to the controller via a CAN bus, and the input terminal of the auxiliary power meter is connected to the auxiliary power supply.

[0019] By setting the power meter to wake up the relay and the auxiliary power meter, the status of the auxiliary power supply is monitored as soon as the whole machine is powered on. The remaining power and voltage of the auxiliary power supply can be observed through the power meter, further ensuring the safety of equipment use.

[0020] An auxiliary power management and control method for an aerial work platform vehicle, which is divided into the following three working conditions based on the overall machine status:

[0021] Power-on state: When the whole machine is powered on, the time relay is energized and then engages after T seconds. The charging wake-up relay is energized and engages. The main power supply outputs current through the charging wake-up relay, thereby energizing the auxiliary power charger. At this time, the main power supply charges the auxiliary power.

[0022] Charging status: The charger is connected to the external power grid, the main power supply is connected to the charger for charging, the charger is connected to the charging wake-up relay, and the current flows through the charging wake-up relay to the auxiliary power charger. At this time, the charger charges the auxiliary power.

[0023] Emergency state: The turntable control box outputs an emergency start signal, the emergency power contactor is energized and closes, and an emergency signal is output to the system power conversion relay. The system power conversion relay is energized and closes to switch the current power supply to the auxiliary power supply.

[0024] The specific control method for the power-on state is as follows:

[0025] The auxiliary power supply outputs constant power to the key switch on the electrical distribution box. Turning the key switch on the electrical distribution box outputs a wake-up signal to the main power supply, which is then activated.

[0026] After activation, the main power supply reduces the voltage to the system voltage through a DC-DC converter to provide power to the turntable control box.

[0027] After the entire machine is powered on, the constant power provided by the auxiliary power supply energizes the time relay. After 4 seconds, the normally open contact of the time relay closes. The charging wake-up relay includes a normally closed contact and a normally open contact. After the charging wake-up relay is energized, the normally open contact closes to form a circuit. The main power supply outputs current to the auxiliary power charger through the charging wake-up relay, and the auxiliary power supply enters the charging state.

[0028] The specific method for controlling the charging state is as follows:

[0029] The charger is connected to the external power grid and receives power, and the main power supply enters the charging state;

[0030] The charger output current is transmitted to the auxiliary power charger through the normally closed contact of the charging wake-up relay, and the auxiliary power supply is powered on and enters the charging state.

[0031] The specific control method for the emergency state is as follows:

[0032] When the main power supply fails and cannot safely provide power output, or when the whole machine malfunctions and is restricted from operation, the auxiliary power supply provides constant power to the emergency button through the key switch that has been turned on.

[0033] An emergency signal is output via the emergency switch on the turntable control box. The normally open contact of the emergency power contactor is energized and closes to form a circuit. The system power conversion relay includes a normally open contact and a normally closed contact. When the system power conversion relay is energized, the normally open contact closes, and the system power is switched from the main power supply to the auxiliary power supply.

[0034] The current is input to the emergency motor through the circuit breaker via the auxiliary power supply. At this time, the whole machine is disconnected from the main power supply and only provides power through the auxiliary power supply.

[0035] It also includes auxiliary power supply status monitoring, specifically:

[0036] When the whole machine is powered on, the auxiliary power supply outputs constant power to the key switch of the electrical distribution box. When the key switch on the electrical distribution box is turned on, the normally open contact of the power meter wakes up the relay and is energized and closes, forming a circuit. The auxiliary power meter is energized. At the same time, the positive and negative terminals of the auxiliary power supply are connected to the auxiliary power meter. All three are connected at the same time to activate the auxiliary power meter. The power meter is set with a low power threshold. When the remaining power is lower than the threshold, a low power alarm is issued.

[0037] Beneficial effects: The present invention issues commands through the turntable control box, which are then converted into corresponding working states through the centralized electrical control assembly, including power-on state, charging state and emergency state;

[0038] The main power supply is directly connected to the electrical centralized control assembly. When powered on, the electrical centralized control assembly connects the circuit, thereby enabling the main power supply to discharge and charge the auxiliary power supply after being activated, ensuring the energy storage of the auxiliary power supply.

[0039] The main power supply is also indirectly connected to the electrical centralized control assembly through a DC-DC converter. After the main power supply is activated, the high voltage is converted to low voltage through the DC-DC converter to supply power to the whole system.

[0040] The charger is connected to the electrical centralized control assembly during charging, which enables it to charge the auxiliary power supply while charging the main power supply, thus ensuring the energy storage of the auxiliary power supply.

[0041] In an emergency, a control signal is sent through the turntable control box, and after processing by the electrical centralized control assembly, the system power supply is switched from the main power supply to the auxiliary power supply to ensure the safety of the whole machine.

[0042] By setting the power meter to wake up the relay and the auxiliary power meter, the status of the auxiliary power supply is monitored as soon as the whole machine is powered on. The remaining power and voltage of the auxiliary power supply can be observed through the power meter, further ensuring the safety of equipment use. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0044] Figure 1 This is a block diagram of the overall system structure of the present invention.

[0045] Figure 2 This is a schematic diagram of the overall system of the present invention.

[0046] Figure 3This is a schematic diagram of the internal structure of the turntable control box of the present invention. Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] A management system for an auxiliary power supply 4 of an aerial work platform includes a turntable control box 1, an electrical centralized control assembly 2, a main power supply 3, an auxiliary power supply 4, and an emergency motor 5. The turntable control box 1 includes an electrical distribution box 11 and a controller 12. The turntable control box 1 is directly connected to the auxiliary power supply 4 and the main power supply 3 through the electrical centralized control assembly 2. The auxiliary power supply 4 is also indirectly connected to the electrical centralized control assembly 2 through an auxiliary power supply charger 6. The output terminal of the main power supply 3 is also indirectly connected to the electrical centralized control assembly 2 through a DC-DC converter 7. The main power supply 3 is charged by connecting to the external power grid through a charger 8. The charger 8 is connected to the electrical centralized control assembly 2 when charging.

[0051] The present invention issues commands through the operation controller 12, which are converted into corresponding working states through the electrical centralized control assembly 2, including power-on state, charging state and emergency state.

[0052] The main power supply 3 is directly connected to the electrical centralized control assembly 2. When powered on, the circuit is connected through the electrical centralized control assembly 2, so that the main power supply 3 is activated and discharges to charge the auxiliary power supply 4, ensuring the power storage of the auxiliary power supply 4.

[0053] The main power supply 3 is also indirectly connected to the electrical centralized control assembly 2 through the DC-DC converter 7. After the main power supply 3 is activated, the high voltage is converted to low voltage through the DC-DC converter 7 to supply power to the whole system.

[0054] When the charger 8 is charging, it is connected to the electrical centralized control assembly 2, which can charge the main power supply 3 and the auxiliary power supply 4 at the same time, ensuring the power storage of the auxiliary power supply 4.

[0055] In an emergency, the controller 12 sends a control signal, which is then processed by the electrical centralized control assembly 2 to switch the system power supply from the main power supply 3 to the auxiliary power supply 4 to ensure the safety of the entire machine.

[0056] In order to enable the auxiliary power supply 4 to charge when the whole machine is powered on, the electrical centralized control assembly 2 includes a charging wake-up relay 21 and a time relay 22. The electrical distribution box 11 is connected to the charging wake-up relay 21 through the time relay 22. The input terminal of the charging wake-up relay 21 is connected to the main power supply 3, and the output terminal is connected to the auxiliary power charger 6.

[0057] When the whole machine is powered on, the auxiliary power supply 4 of the key switch is first turned on to provide constant power to the key switch and output an activation signal to the main power supply 3. The positive and negative terminals of the auxiliary power supply 4 are connected to the main power supply 3 to output activation current. The main power supply 3 is activated and the main power supply 3 converts the high voltage output into low voltage through the DC-DC converter 7 to power the system. After the controller 12 is powered on, the time relay 22 is powered on and then engages after 4 seconds. The charging wake-up relay 21 is powered on. The main power supply 3 supplies power to the auxiliary power charger 6 through the charging wake-up relay 21, so that the auxiliary power supply 4 can also be charged when the machine is powered on.

[0058] When the whole machine is charging, the charger 8 charges the main power supply 3 at the same time, and provides power to the auxiliary power charger 6 by waking up the relay 21 during charging, so that the auxiliary power supply 4 can charge during charging.

[0059] The charging wake-up relay 21 (21) includes a normally open contact and a normally closed contact, and the charger 8 (8) is connected to the normally closed contact of the input terminal of the charging wake-up relay 21 (21).

[0060] To enable the system to switch operating power in emergency mode, the electrical centralized control assembly 2 also includes a system power conversion relay 23, an emergency power contactor 24, and a circuit breaker 25. The input terminal of the system power conversion relay 23 is connected to the auxiliary power supply 4 and the DC-DC converter 7, respectively, and the output terminal is connected to the electrical distribution box 11. The signal input terminal of the emergency power contactor 24 is connected to the emergency switch on the electrical distribution box 11. The input terminal of the contact of the emergency power contactor 24 is connected to the auxiliary power supply 4, and the output terminal is connected to the emergency motor 5 through the circuit breaker 25. The emergency power contactor 24 is signal-connected to the system power conversion relay 23.

[0061] The system power switching relay 23 includes a normally open contact and a normally closed contact. After a power switching signal is issued, the normally open contact closes and the normally closed contact opens, and the output terminal is connected to the electrical distribution box 11, thereby realizing the switching of the system power.

[0062] In order to monitor the power of the auxiliary power supply 4 and facilitate operators to understand the equipment status, the electrical centralized control assembly 2 also includes an auxiliary power meter 26 and a power meter wake-up relay 27. The turntable control box 1 is connected to the auxiliary power meter 26 through the power meter wake-up relay 27. The auxiliary power meter 26 is connected to the controller 12 through a CAN bus. The input terminal of the auxiliary power meter 26 is connected to the auxiliary power supply 4.

[0063] By setting the power meter to wake up the relay 27 and the auxiliary power meter 26, the status of the auxiliary power supply 4 will be monitored as soon as the whole machine is powered on. The remaining power and voltage of the auxiliary power supply 4 can be observed through the power meter, which further ensures the safety of the equipment.

[0064] A method for managing and controlling the auxiliary power supply of an aerial work platform, which is divided into the following three working conditions based on the overall machine status:

[0065] Power-on state: When the whole machine is powered on, the time relay 22 is energized and then engages after T seconds. The charging wake-up relay 21 is energized and engages. The main power supply 3 outputs current through the charging wake-up relay 21, thereby energizing the auxiliary power charger 6. At this time, the main power supply 3 charges the auxiliary power supply 4.

[0066] Charging status: Charger 8 is connected to the external power grid, main power supply 3 is connected to charger 8 for charging, charger 8 is connected to charging wake-up relay 21, and current flows through charging wake-up relay 21 to auxiliary power charger 6. At this time, charger 8 charges auxiliary power supply 4.

[0067] Emergency state: The turntable control box 1 outputs an emergency start signal, the emergency power contactor 24 is energized and closes, and an emergency signal is output to the system power conversion relay 23. The system power conversion relay 23 is energized and closes to switch the current power supply to the auxiliary power supply 4.

[0068] The specific control method for the power-on state is as follows:

[0069] Auxiliary power supply 4 outputs constant power to the key switch of electrical distribution box 11. Turning the key switch on electrical distribution box 11 outputs a wake-up signal to main power supply 3, and main power supply 3 is activated.

[0070] After activation, the main power supply 3 reduces the voltage to the system voltage through the DC-DC converter 7, providing power to the turntable control box 1.

[0071] After the entire machine is powered on, the constant power provided by the auxiliary power supply 4 energizes the time relay 22. After 4 seconds, the normally open contact of the time relay 22 closes. The charging wake-up relay 21 includes a normally closed contact and a normally open contact. After the charging wake-up relay 21 is energized, the normally open contact closes to form a circuit. The main power supply 3 outputs current to the auxiliary power charger 6 through the charging wake-up relay 21, and the auxiliary power supply 4 enters the charging state.

[0072] The specific method for controlling the charging state is as follows:

[0073] The charger 8 is connected to the external power grid and receives power, and the main power supply 3 enters the charging state;

[0074] The output current of the charger 8 is transmitted to the auxiliary power charger 6 through the normally closed contact of the charging wake-up relay 21, and the auxiliary power supply 4 is powered on and enters the charging state.

[0075] The specific control method for the emergency state is as follows:

[0076] When the main power supply 3 fails and cannot safely provide power output, or when the whole machine fails and is restricted, the auxiliary power supply 4 provides constant power to the emergency button through the key switch that has been turned on.

[0077] An emergency signal is output via the emergency switch on the controller 12. The normally open contact of the emergency power contactor 24 is energized and closes to form a circuit. The system power conversion relay 23 includes a normally open contact and a normally closed contact. When the system power conversion relay 23 is energized, the normally open contact closes, and the system power is switched from the main power supply 3 to the auxiliary power supply 4.

[0078] The current is input to the emergency motor 5 through the auxiliary power supply 4 and the circuit breaker 25. At this time, the whole machine is disconnected from the main power supply 3 and only the auxiliary power supply 4 provides power.

[0079] It also includes status monitoring of auxiliary power supply 4, specifically:

[0080] When the whole machine is powered on, the auxiliary power supply 4 outputs constant power to the key switch of the electrical distribution box 11. When the key switch on the electrical distribution box 11 is turned on, the normally open contact of the power meter wake-up relay 27 is energized and closed, forming a circuit. The auxiliary power meter 26 is energized. At the same time, the positive and negative terminals of the auxiliary power supply 4 are connected to the auxiliary power meter 26. All three are connected at the same time to activate the auxiliary power meter 26.

[0081] The auxiliary power meter 26 turns off the screen 2 minutes after power-on. Before turning off the screen, it displays the current power voltage and power level. It continuously sends messages before or after turning off the screen, with a message period of 1 second. When the power level of the auxiliary power supply 4 is less than the preset power level, it indicates that the auxiliary battery 4 is offline. Then, it outputs a warning signal to the controller 12 to provide a warning that the auxiliary battery 4 is offline.

[0082] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0083] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An auxiliary power management system for an aerial work platform, comprising a turntable control box (1), an electrical centralized control assembly (2), a main power supply (3), an auxiliary power supply (4), and an emergency motor (5), wherein the turntable control box (1) comprises an electrical distribution box (11) and a controller (12), characterized in that: The turntable control box (1) is directly connected to the auxiliary power supply (4) and the main power supply (3) through the electrical centralized control assembly (2). The auxiliary power supply (4) is also indirectly connected to the electrical centralized control assembly (2) through the auxiliary power supply charger (6). The output of the main power supply (3) is also indirectly connected to the electrical centralized control assembly (2) through the DC-DC converter (7). The main power supply (3) is connected to the external power grid for charging through the charger (8). The charger (8) is connected to the electrical centralized control assembly (2). The electrical centralized control assembly (2) includes a charging wake-up relay (21) and a time relay (22). The electrical distribution box (11) is connected to the charging wake-up relay (21) through the time relay (22). The input end of the charging wake-up relay (21) is connected to the main power supply (3), and the output end is connected to the auxiliary power charger (6). The charging wake-up relay (21) includes a normally open contact and a normally closed contact, and the charger (8) is connected to the normally closed contact of the input terminal of the charging wake-up relay (21). The electrical centralized control assembly (2) also includes a system power conversion relay (23), an emergency power contactor (24), and a circuit breaker (25). The input terminal of the system power conversion relay (23) is connected to the auxiliary power supply (4) and the DC-DC converter (7), respectively, and the output terminal is connected to the electrical distribution box (11). The signal input terminal of the emergency power contactor (24) is connected to the emergency switch on the electrical distribution box (11). The input terminal of the contact of the emergency power contactor (24) is connected to the auxiliary power supply (4), and the output terminal is connected to the emergency motor (5) through the circuit breaker (25). The emergency power contactor (24) is signal connected to the system power conversion relay (23).

2. The auxiliary power management system for the aerial work platform according to claim 1, characterized in that: The electrical centralized control assembly (2) also includes an auxiliary power meter (26) and a power meter wake-up relay (27). The turntable control box (1) is connected to the auxiliary power meter (26) through the power meter wake-up relay (27). The auxiliary power meter (26) is connected to the controller (12) through a CAN bus. The input terminal of the auxiliary power meter (26) is connected to the auxiliary power supply (4).

3. A method for managing and controlling the auxiliary power supply of an aerial work platform, characterized in that, Based on the overall machine condition, the following three operating conditions apply: Power-on state: When the whole machine is powered on, the time relay (22) is energized and then energized after T seconds. The charging wake-up relay (21) is energized and energized. The main power supply (3) outputs current through the charging wake-up relay (21), thereby energizing the auxiliary power supply charger (6). At this time, the main power supply (3) charges the auxiliary power supply (4). Charging status: The charger (8) is connected to the external power grid, the main power supply (3) is connected to the charger (8) for charging, the charger (8) is connected to the charging wake-up relay (21), and the current flows through the charging wake-up relay (21) to the auxiliary power charger (6). At this time, the charger (8) charges the auxiliary power supply (4). Emergency state: The turntable control box (1) outputs an emergency start signal, the emergency power contactor (24) is energized and closes, and outputs an emergency signal to the system power conversion relay (23). The system power conversion relay (23) is energized and closes to switch the current power supply to the auxiliary power supply (4). The specific control method for the power-on state is as follows: The auxiliary power supply (4) outputs constant power to the key switch of the electrical distribution box (11). When the key switch on the electrical distribution box (11) is turned, a wake-up signal is output to the main power supply (3), and the main power supply (3) is activated. After activation, the main power supply (3) reduces the voltage to the system voltage through the DC-DC converter (7) to provide power to the turntable control box (1); After the whole machine is powered on, the constant power provided by the auxiliary power supply (4) energizes the time relay (22). After 4 seconds, the normally open contact of the time relay (22) closes. The charging wake-up relay (21) includes a normally closed contact and a normally open contact. After the charging wake-up relay (21) is energized, the normally open contact closes to form a circuit. The main power supply (3) outputs current to the auxiliary power charger (6) through the charging wake-up relay (21). The auxiliary power supply (4) is energized and enters the charging state. The specific method for controlling the charging state is as follows: The charger (8) is connected to the external power grid and receives power, and the main power supply (3) enters the charging state; The charger (8) outputs current through the normally closed contact of the charging wake-up relay (21) to the auxiliary power charger (6), and the auxiliary power supply (4) is powered on and enters the charging state; The specific control method for the emergency state is as follows: When the main power supply (3) fails and cannot safely provide power output, or when the whole machine fails and is restricted, the auxiliary power supply (4) provides constant power to the emergency button through the key switch that has been turned on; An emergency signal is output through the emergency switch on the electrical distribution box (11). The normally open contact of the emergency power contactor (24) is energized and closed to form a circuit. The system power conversion relay (23) includes a normally open contact and a normally closed contact. When the system power conversion relay (23) is energized, the normally open contact closes and the system power is switched from the main power supply (3) to the auxiliary power supply (4). The current is input to the emergency motor (5) through the auxiliary power supply (4) and the circuit breaker (25). At this time, the whole machine is disconnected from the main power supply (3) and only provides power through the auxiliary power supply (4).

4. The auxiliary power management and control method for aerial work platforms according to claim 3, characterized in that, It also includes status monitoring of the auxiliary power supply (4), specifically: When the whole machine is powered on, the auxiliary power supply (4) outputs constant power to the key switch of the electrical distribution box (11). When the key switch on the electrical distribution box (11) is turned on, the normally open contact of the power meter wake-up relay (27) is energized and closed, forming a circuit. The auxiliary power meter (26) is energized. At the same time, the positive and negative terminals of the auxiliary power supply (4) are connected to the auxiliary power meter (26). All three are connected at the same time to activate the auxiliary power meter (26). The power meter (26) is set with a low voltage threshold. When the voltage is lower than the threshold, a power shortage alarm is issued.

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