Construction machine charging device and electric construction machine

Abstract

A construction machine charging device and an electric construction machine, relating to the technical field of vehicle charging. Provided is a mobile energy storage charging device for a construction machine, into which a power battery (1), a high-voltage power distribution box (2), a power distribution unit (3), an integrated alternating current / direct current charging port (12), an onboard charger (13), an inversion and boosting module (01), and a controller (18) are integrated, so that direct current is entirely used for charging the power battery (1), while alternating current may either be entirely used for charging the power battery (1), or be partially used for charging the power battery (1) and the remaining alternating current is used for charging different industrial charging ports.

Description

Construction machine charging device and electric construction machine

[0001] Cross-reference to Related Applications

[0002] This application claims priority to Chinese Patent Application No. 202410410189.5, filed on April 7, 2024, entitled “Construction machine charging device and electric construction machine”, which is incorporated by reference herein in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of vehicle charging technology, in particular to a construction machine charging device and an electric construction machine. BACKGROUND

[0004] With the development of technology, new energy construction machines are becoming more and more common. Unlike passenger cars and commercial vehicles, which are in a relaxed and superior charging environment, construction machines usually work in new construction sites, piers, tunnels or ports and other wild environments where power distribution facilities are not complete. The long working time and heavy task determine that they need more charging capacity, so the range anxiety caused by slow charging and inconvenience is the primary charging problem to be solved.

[0005] SUMMARY

[0006] The present application provides a construction machine charging device and an electric construction machine to improve the flexibility and ease of implementation of new energy construction machine charging.

[0007] The present application provides a construction machine charging device, comprising: a power battery, a high-voltage power distribution box, a power distribution unit, an AC and DC integrated charging seat, a vehicle-mounted charger, an inverter and booster assembly, and a controller. The high-voltage power distribution box is connected to the AC and DC integrated charging seat and the power battery, respectively. The power distribution unit is connected to the vehicle-mounted charger, the inverter and booster assembly, and the controller, respectively. The controller is connected to the power distribution unit, the vehicle-mounted charger, and the power battery, respectively.

[0008] The high-voltage power distribution box is used to distribute the DC power output by the AC and DC integrated charging seat to the power battery after distribution processing.

[0009] The vehicle-mounted charger is used to rectify and boost the AC power input by the AC and DC integrated charging seat to obtain high-voltage current.

[0010] The controller is configured to control the high-voltage current to sequentially pass through the power distribution unit for power distribution, pass through the high-voltage distribution box for distribution processing, and then enter the power battery; control part of the high-voltage current to sequentially pass through the power distribution unit for power distribution, pass through the high-voltage distribution box for distribution processing, and then enter the power battery; and control the remaining current in the high-voltage current to pass through the inverter and voltage boosting assembly for inverting and voltage boosting to obtain first multi-phase alternating current, which is used to output current to different industrial charging seats.

[0011] According to the application, the controller is further configured to control direct current provided by the power battery to sequentially pass through the high-voltage distribution box for distribution processing, pass through the power distribution unit for power distribution, and pass through the inverter and voltage boosting assembly for inverting and voltage boosting to obtain second multi-phase alternating current, which is used to output current to the different industrial charging seats.

[0012] According to the application, the controller is further connected to a thermal management system and a power battery management system, the high-voltage distribution box is connected to the thermal management system, and the power battery management system is connected to the power battery and the thermal management system, respectively.

[0013] The power battery management system is configured to control the thermal management system to heat or cool the power battery in response to a heating / cooling instruction issued by the controller.

[0014] According to the application, the controller is further connected to a water pump and a radiator, and the controller is further configured to control the working parameters of the water pump and / or the radiator to be adjusted when the working temperature of the high-voltage components is not within a preset temperature range, so that the adjusted working temperature is within the preset temperature range.

[0015] The high-voltage components are at least one of the power distribution unit, the inverter, and the on-board charger; the power distribution unit, the inverter, and the on-board charger are connected in series via a cooling water pipe; and the inverter belongs to the inverter and voltage boosting assembly.

[0016] According to the application, the engineering machinery charging device further comprises a display and a buzzer, and the controller is connected to the display.

[0017] The display is configured to display at least one of a pre-set movable energy storage charging device plug-in operation mode, a pre-set alternating current input mode, a pre-set alternating current output mode, charging state information, and fault information of a fault component in a charging process based on an information display instruction issued by the controller; and the buzzer is configured to provide a pre-warning when a fault occurs in the charging process.

[0018] The construction machinery charging device further comprises a smart terminal and a low-voltage storage battery set, the low-voltage storage battery set is connected to the power distribution unit, and the controller is connected to the smart terminal.

[0019] The controller is further configured to control high-voltage power on the movable energy storage charging device in a case where the smart terminal detects that the voltage of the low-voltage power supply system is lower than a preset voltage threshold.

[0020] The power distribution unit is configured to supply power to the low-voltage storage battery set in response to a power supply instruction issued by the controller.

[0021] The construction machinery charging device further comprises a smart terminal and a low-voltage storage battery set, the low-voltage storage battery set is connected to the power distribution unit, and the controller is connected to the smart terminal.

[0022] The smart terminal is further configured to report the location of the whole vehicle to the controller and receive a pre-booking charging instruction issued by the smart terminal application.

[0023] The controller is further configured to control a target device that requests pre-booking charging to perform pre-booking charging in response to the pre-booking charging instruction, wherein the target device is at least one of the power battery, the power battery management system, the power distribution unit, the inverter, the transformer, and the on-board charger.

[0024] The construction machinery charging device further comprises an emergency stop switch.

[0025] The emergency stop switch is configured to perform emergency stop processing of the whole vehicle in response to a pressing operation of a user.

[0026] The controller is further configured to control a shutdown or power-off operation to be performed in a case where an emergency fault is detected and the pressing operation is not received by the emergency stop switch.

[0027] The construction machinery charging device further comprises an emergency stop switch.

[0028] The inverter is configured to convert input direct current into multi-phase alternating current.

[0029] The transformer is configured to step up and isolate the multi-phase alternating current into the first multi-phase alternating current or the second multi-phase alternating current.

[0030] The circuit breaker set is configured to control the switch of each industrial charging seat to output current to each industrial charging seat.

[0031] The application also provides an electric engineering machine, comprising the engineering machine charging device. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0033] Fig. 1 is a structural schematic diagram of the engineering machine charging device provided by the application;

[0034] Fig. 2 is a structural schematic diagram of the engineering machine charging device provided by the application;

[0035] Fig. 3 is a structural schematic diagram of the engineering machine charging device provided by the application;

[0036] Reference signs: 01: inverter boost assembly; 1: power battery; 2: high-voltage distribution box; 3: power distribution unit; 4: inverter; 5: transformer; 6: circuit breaker group; 7: first industrial socket; 8: second industrial socket; 9: third industrial socket; 10: fourth industrial socket; 11: fifth industrial socket; 12: AC and DC integrated charging seat; 13: on-board charger; 14: radiator; 15: intelligent terminal; 16: communication protocol converter; 17: display; 18: controller; 19: power battery management system; 20: thermal management system; 21: low-voltage storage battery group; 22: water pump; 23: buzzer; 24: emergency stop switch. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the application more clear, the technical solutions in the application will be described clearly and completely below in combination with the drawings in the application. Obviously, the described embodiments are some embodiments of the application, not all embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0038] In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In the character description of the present application, the character " / " generally represents an "or" relationship between the associated objects. In addition, it should be noted that the serial numbers in the present application, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning.

[0039] At present, under the premise of global energy shortage, new energy engineering machinery is becoming more and more common, and the use of a large number of new energy equipment inevitably causes charging problems. Unlike passenger cars and commercial vehicles, which are in a relaxed and superior charging environment, engineering machinery usually works in newly built construction sites, wharfs, tunnels or ports and other wild environments where power distribution facilities are insufficient, and the long working time and heavy working task determine that it needs more charging capacity. Therefore, the range anxiety caused by slow charging and inconvenient charging is the primary charging problem to be solved; new energy engineering machinery equipment cluster operation, the scene of multiple devices charging at the same time is common; in addition, it is convenient to charge at different locations, and the mobile energy storage charging device needs to meet the demand of being mobile; this puts forward new challenges for modern equipment intelligentization and high integration.

[0040] In related technologies, the portable mobile energy storage charging device of new energy passenger cars and commercial vehicles charges or discharges through a matched battery pack and a battery management system (BMS), realizes national standard direct current input and direct current output through a bidirectional direct current (DC) / DC isolation conversion power supply, realizes alternating current (AC) output of 220V through an AC inverter power supply, and connects a Type-C / USB-A interface through a DC conversion power supply.

[0041] However, since the existing portable mobile energy storage charging device has small power distribution and single charging interface, it cannot be applied to the harsh charging environment of engineering machinery, nor can it be flexibly used for industrial charging.

[0042] To solve the above technical problems, the present application provides an engineering machinery charging device and an electric engineering machinery, which are used to solve the technical problems that the existing portable mobile energy storage charging device cannot be applied to the harsh charging environment of engineering machinery, nor can it be flexibly used for industrial charging.

[0043] The engineering machinery charging device and the electric engineering machinery of the present application will be described below in conjunction with FIGS. 1-3.

[0044] Referring to FIG. 1, one of the structural diagrams of the engineering machinery charging device provided by the present application is shown in FIG. 1. The engineering machinery charging device comprises a power battery 1, a high-voltage distribution box 2, a power distribution unit 3, an AC and DC integrated charging seat 12, a vehicle-mounted charger 13, an inverter voltage boosting assembly and a controller 18. The high-voltage distribution box 2 is connected to the AC and DC integrated charging seat 12 and the power battery 1 respectively. The power distribution unit 3 is connected to the vehicle-mounted charger 13, the inverter voltage boosting assembly 01 and the controller 18 respectively. The controller 18 is connected to the power distribution unit 3, the vehicle-mounted charger 13 and the power battery 1 respectively.

[0045] The high-voltage distribution box 2 is used to distribute the DC power output by the AC and DC integrated charging seat 12 and input to the power battery 1.

[0046] The vehicle-mounted charger 13 is used to rectify and boost the AC power input by the AC and DC integrated charging seat 12 to obtain high-voltage current.

[0047] The controller 18 is used to control the high-voltage current to sequentially pass through the power distribution unit 3 for power distribution, the high-voltage distribution box 2 for distribution processing and then enter the power battery 1. It is also used to control part of the high-voltage current to sequentially pass through the power distribution unit 3 for power distribution, the high-voltage distribution box 2 for distribution processing and then enter the power battery 1. In addition, it is used to control the remaining current in the high-voltage current to enter the inverter voltage boosting assembly 01 for inverter voltage boosting to obtain first multi-phase AC power for outputting current to different industrial charging seats.

[0048] In order to facilitate movement, all devices contained in the engineering machinery charging device can be integrated and equipped with wheels. Thus, the second structural diagram of the engineering machinery charging device is shown in FIG. 2.

[0049] For example, the first multi-phase AC power can be three-phase five-wire sinusoidal AC power containing N and PE lines, and the frequency of the first multi-phase AC power can be 50Hz. In addition, the controller 18 can be a whole vehicle controller, and the AC and DC integrated charging seat 12 can be a European standard AC and DC integrated charging seat.

[0050] Specifically, the external AC power source can enter the vehicle-mounted charger 13 via the AC and DC integrated charging seat 12 for rectification and voltage boosting to obtain high-voltage current. In this way, the vehicle-mounted charger can achieve the purpose of AC 3.3kw (230V), 11kw (400V), 20kW (400V), 40kW (400V) charging, thereby realizing the movable energy storage charging device AC input function.

[0051] Exemplarily, the external alternating power supply can be 220V or 380V, so as to realize the industrial power distribution purpose subsequently.

[0052] It should be noted that the engineering machinery charging device provided in the application can also include a communication protocol converter 16 and a power battery management system 19. The communication protocol converter 16 is used to convert the external European standard charging pile protocol and communicate with the power battery management system 19 after successful conversion. In this way, by using the alternating current and direct current integrated charging seat 12 and configuring the communication protocol converter 16, the movable energy storage charging device can be charged at 120kw by using the European standard charging pile, thereby realizing the direct current input (European standard) function of the movable energy storage charging device.

[0053] In addition, when the communication protocol converter 16 monitors the external European standard direct current charging pile gun insertion, the controller 18 and the power battery management system 19 are awakened through the hard line, the external European standard direct current charging pile protocol is converted, and further communication is performed between the communication protocol converter 16 and the power battery management system 19 under the condition that the conversion is successful, the power battery management system 19 communicates with the controller 18, and the European standard direct current charging process is completed.

[0054] The engineering machinery charging device provided in the application is configured in the form of integrating the power battery, the high-voltage distribution box, the power distribution unit, the alternating current and direct current integrated charging seat, the vehicle-mounted charger, the inverter and voltage boosting assembly, and the controller into one body, so as to realize that the direct current is all charged to the power battery, and the alternating current can be all charged to the power battery, or part of the alternating current is used for charging the power battery and the remaining part of the alternating current is used for charging different industrial charging seats.

[0055] In this way, not only the power distribution capacity of the movable energy storage charging device of the engineering machinery is improved, the direct current charging function, the alternating current charging function and the discharging function while charging are realized, but also the function of simultaneously charging multiple devices by the alternating current output with the industrial plug is realized, thereby being suitable for the harsh charging environment of the engineering machinery and improving the flexibility and easy realization of the industrial charging.

[0056] Based on the engineering machinery charging device shown in FIG. 1, in an example embodiment, the controller 18 is further configured to control the direct current provided by the power battery 1 to be sequentially subjected to power distribution processing by the high-voltage distribution box 2, power distribution by the power distribution unit 3, and inverter and voltage boosting by the inverter and voltage boosting assembly 01, so as to obtain second multi-phase alternating current for outputting current to different industrial charging seats.

[0057] Exemplarily, the second multi-phase alternating current can also be three-phase five-wire sinusoidal wave alternating current containing N line and PE line, and the frequency of the second multi-phase alternating current can also be 50Hz.

[0058] It should be noted that the power battery 1 can provide direct current to the high-voltage distribution box 2, and the direct current provided by the power battery 1 is converted into second multi-phase alternating current via the high-voltage distribution box 2 and the power distribution unit 3, and is converted into second multi-phase alternating current via the inverter and voltage boosting assembly 01.

[0059] Based on the engineering machinery charging device shown in FIG. 1, in an example embodiment, the controller 18 can also be connected to a thermal management system 20 and a power battery management system 19, the high-voltage distribution box 2 is connected to the thermal management system 20, and the power battery management system 19 is connected to the power battery 1 and the thermal management system 20, respectively.

[0060] The power battery management system 19 is configured to control the thermal management system 20 to heat or cool the power battery 1 in response to a heating / cooling instruction issued by the controller 18.

[0061] Specifically, the controller 18 can automatically generate a battery management instruction when the vehicle is started and run, and send the battery management instruction to the power battery management system 19. When the power battery management system 19 receives the battery management instruction, it can monitor the battery temperature of the power battery 1 in real time during charging or discharging, and automatically generate a heating instruction or a cooling instruction when it is determined that the battery temperature is too high or too low, and send the heating instruction or the cooling instruction to the thermal management system 20, so that the thermal management system 20 heats or cools the power battery 1 based on the received heating instruction or cooling instruction.

[0062] Based on the engineering machinery charging device shown in FIG. 1, in an example embodiment, the controller 18 is also connected to a water pump 22 and a radiator 14.

[0063] The controller 18 is further configured to control adjustment of working parameters of the water pump 22 and / or the radiator 14 when the working temperature of the high-voltage component is not within the preset temperature range, so that the adjusted working temperature is within the preset temperature range.

[0064] The high-voltage component is at least one of the power distribution unit 3, the inverter 4, and the on-board charger 13; the power distribution unit 3, the inverter 4, and the on-board charger 13 are connected in series via a cooling water pipe; and the inverter 4 belongs to the inverter and voltage boosting assembly 01.

[0065] Specifically, each high-voltage component may have a built-in temperature sensor. The controller 18 acquires the operating temperature sensed by the temperature sensor of each high-voltage component in real time and compares the acquired operating temperature with the preset temperature range of the corresponding high-voltage component. If the acquired operating temperature is not within the corresponding preset temperature range, the controller 18 sends a parameter adjustment instruction to the water pump 22 and / or radiator 14. When the water pump 22 and / or radiator 14 receives the parameter adjustment instruction, the operating parameters are adjusted accordingly, so that the adjusted operating temperature is within the corresponding preset temperature range. For example, the operating parameter may be the speed of the fan in the water pump 22 and / or radiator 14.

[0066] It should be noted that each preset temperature range represents the optimal temperature range required by the corresponding high-voltage component during vehicle operation. Furthermore, if the operating temperature acquired by controller 18 is within the corresponding preset temperature range, there is no need to adjust the operating parameters of water pump 22 and / or radiator 14. Thus, by controlling the operating parameters of the water pump and / or radiator, the operating temperature of the high-voltage component is kept within the optimal temperature range in real time, achieving thermal management control.

[0067] Based on the engineering machinery charging device shown in FIG1 , in an exemplary embodiment, the device may further include a display 17 and a buzzer 23 , and the controller 18 is connected to the display 17 ;

[0068] The display 17 is used to display at least one of a preset plug-in operation mode of the mobile energy storage charging device, a preset AC input mode, a preset AC output mode, charging status information, and fault information of a faulty component during the charging process based on the information display instruction issued by the controller 18; the buzzer 23 is used to issue an early warning when a fault occurs during the charging process.

[0069] The faulty component is a component that fails during the charging process.

[0070] The plug-in operation mode of the portable energy storage charging device may include but is not limited to a charging mode, a discharging mode, a continuous charging mode, and a discharging while charging mode. The charging mode may include but is not limited to an AC charging mode and a DC charging mode.

[0071] Specifically, the display 17 can display a plurality of different AC input modes, each of which can be represented as power and voltage; for example, when the AC input mode is 5, the 5 AC input modes can be in turn ① 3.3kw (230V), ② 11kw (400V), ③ 20kW (400V), ④ 40kW (400V); the movable energy storage charging device plug-in operation mode can be a mode that realizes the functions of current input and output while charging. In this way, through the display and the buzzer, the display and early warning purposes of the movable energy storage charging device failure can be realized, not only the information display function, fault management and early warning function of the engineering machinery charging device are realized, but also the high voltage on-off of the related components and the working state control according to the different modes of the different movable energy storage charging devices are completed, so that the high voltage on-off function of the movable energy storage charging device of the engineering machinery charging device is realized.

[0072] Based on the engineering machinery charging device shown in Figure 1, in an example embodiment, the device can further include an intelligent terminal 15 and a low-voltage battery pack 21, the low-voltage battery pack 21 being connected to the power distribution unit 3, and the controller 18 being connected to the intelligent terminal 15.

[0073] The controller 18 is further configured to control the movable energy storage charging device to be powered on with high voltage when the intelligent terminal 15 detects that the voltage of the low-voltage power supply system is lower than the preset voltage threshold.

[0074] The power distribution unit 3 is configured to supply power to the low-voltage battery pack 21 in response to the power supply instruction issued by the controller 18.

[0075] Specifically, considering that the low-voltage power supply system in the vehicle may have a power loss phenomenon when the movable energy storage charging device is placed for a long time, and that the power loss phenomenon may occur when the vehicle is continuously placed statically for 1-2 months, for example, the power loss phenomenon may occur when the vehicle is continuously placed statically for 2 months in high temperature weather (summer) or for 1 month in low temperature weather (winter). Therefore, by having a low-voltage power supply system power balancing function, the movable energy storage charging device can be powered on with high voltage and / or the low-voltage battery pack 21 can be supplied with power in a timely manner when the power loss risk occurs. That is, the intelligent terminal 15 can monitor the voltage of the low-voltage power supply system in real time and compare it with the preset voltage threshold, and if it is detected that the voltage of the low-voltage power supply system is lower than the preset voltage threshold, it can be determined that there is a power loss risk, at which time the controller 18 can be awakened and sent a high-voltage power supply instruction to the controller 18, so that the controller 18 can control the movable energy storage charging device to be powered on with high voltage when receiving the high-voltage power supply instruction.

[0076] In addition to the power compensation by controlling the high-voltage power on the movable energy storage charging device, the controller 18 can also control the DC converter built in the power distribution unit 3 to compensate power for the low-voltage battery pack 21. In this way, the control purpose of the DC converter, the buzzer and the display in the movable energy storage charging device can be achieved, thereby realizing the accessory control function of the engineering machinery charging device.

[0077] Based on the engineering machinery charging device shown in Figure 1, in an example embodiment, the smart terminal 15 can also connect the smart terminal application program;

[0078] The smart terminal 15 is configured to report the vehicle position to the controller 18, and configured to receive the pre-charge instruction issued by the smart terminal application program;

[0079] The controller 18 is further configured to control the target device requesting pre-charge to perform pre-charge in response to the pre-charge instruction; wherein the target device is at least one of the power battery 1, the power battery management system 19, the power distribution unit 3, the inverter 4, the transformer 5 and the on-board charger 13.

[0080] It should be noted that the smart terminal 15 can not only report the position in real time, but also receive the pre-charge instruction issued by the smart terminal application program through the cloud server, and send the pre-charge instruction to the controller 18, so that the controller 18 controls the target device requesting pre-charge to perform pre-charge. In this way, the basic functions of the movable energy storage charging device such as charging and discharging are controlled by the smart terminal, and the charging process state information is monitored, thereby realizing the remote control function of the engineering machinery charging device.

[0081] Based on the engineering machinery charging device shown in Figure 1, in an example embodiment, the device can also include an emergency stop switch 24;

[0082] The emergency stop switch 24 is configured to perform emergency stop processing of the vehicle in response to the pressing operation of the user; the controller 18 is further configured to control the shutdown or power-off operation in the case that the emergency stop switch 24 does not receive the pressing operation when detecting the emergency failure.

[0083] It should be noted that when an emergency failure occurs during vehicle operation and emergency stop processing is required, the emergency stop processing can be realized by pressing the emergency stop switch 24, or when the user does not press the emergency stop switch 24 in time, the controller 18 can also realize the emergency stop processing by controlling the shutdown or power-off operation. In this way, the timeliness and flexibility of the emergency stop processing for the emergency situation can be improved, thereby realizing the fault management and early warning function of the engineering machinery charging device.

[0084] Based on the engineering machinery charging device shown in Figure 1, in an example embodiment, the inverter boost component 01 includes an inverter 4 and a transformer 5, the power distribution unit 3 is connected to the inverter 4 and the transformer 5 in turn, the transformer 5 is connected to the circuit breaker group 6, and the circuit breaker group 6 is connected to different industrial charging seats;

[0085] The inverter 4 is used to invert the input DC power into multi-phase AC power;

[0086] The transformer 5 is used to boost and isolate the multi-phase AC power into first multi-phase AC power or second multi-phase AC power;

[0087] The circuit breaker group 6 is used to control the switch of each industrial charging seat to output current to each industrial charging seat.

[0088] Specifically, the AC power input into the inverter 4 can be the residual current in the high-voltage current, and the DC power input into the inverter 4 can be the DC power provided by the power battery after being processed by the high-voltage distribution box 2 and distributed by the power distribution unit 3.

[0089] For example, referring to Figure 3, the structure of the engineering machinery charging device is shown in Figure 3, the different industrial charging seats connected to the circuit breaker group 6 can be the first industrial socket 7, the second industrial socket 8, the third industrial socket 9, the fourth industrial socket 10 and the fifth industrial socket 11, the power of the first industrial socket 7 is 3kw, and the voltage is 230V, the power of the second industrial socket 8 is 10kw, and the voltage is 400V, the power of the third industrial socket 9 is 20kw, and the voltage is 400V, the power of the fourth industrial socket 10 is 40kw, and the voltage is 400V, and the power of the fifth industrial socket 11 is 80kw, and the voltage is 400V.

[0090] It should be noted that the inverter 4 and the transformer 5 can provide 3.3kw (230V), 11kw (400V), 20kW (400V), 40kW (400V), 80kW (400V) AC power for the whole vehicle, thereby realizing the movable energy storage charging device AC output function.

[0091] The engineering machinery charging device provided by the application realizes the low-voltage constant power and the provision and disconnection of the wake-up power of the main controller 18, the power battery management system 19, the thermal management system 20, the power distribution unit 3, the on-board charger 13, the inverter 4, the intelligent terminal 15, the communication protocol converter 16 and the display 17, thereby realizing the movable energy storage charging device low-voltage power-on and power-off function of the engineering machinery charging device.

[0092] The application further provides an electric engineering machine comprising the engineering machine charging device described in the foregoing embodiments, which is related to the implementation principle and beneficial effects similar to those of the engineering machine charging device, and reference can be made to the implementation principle and beneficial effects of the engineering machine charging device, which will not be described herein again.

[0093] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place or distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment scheme according to actual needs. Those skilled in the art can understand and implement it without creative labor.

[0094] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be realized by means of software and the necessary general hardware platform, and of course, it can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0095] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. A charging device for construction machinery, comprising: A power battery (1), a high-voltage distribution box (2), a power distribution unit (3), an AC and DC integrated charging seat (12), an on-board charger (13), an inverter boost component (01) and a controller (18), wherein the high-voltage distribution box (2) is respectively connected to the AC and DC integrated charging seat (12) and the power battery (1), the power distribution unit (3) is respectively connected to the on-board charger (13), the inverter boost component (01) and the controller (18), and the controller (18) is respectively connected to the power distribution unit (3), the on-board charger (13) and the power battery (1); The high-voltage distribution box (2) is used to distribute the direct current output by the AC and DC integrated charging station (12) and then input it into the power battery (1); The on-board charger (13) is used to rectify and boost the AC power input by the AC and DC integrated charging base (12) to obtain a high-voltage current; The controller (18) is used to control the high-voltage current to sequentially pass through the power distribution unit (3) for power distribution, the high-voltage distribution box (2) for power distribution processing, and then enter the power battery (1); to control part of the high-voltage current to sequentially pass through the power distribution unit (3) for power distribution, the high-voltage distribution box (2) for power distribution processing, and then enter the power battery (1); and to control the remaining current in the high-voltage current to enter the inverter boost component (01) for inversion boosting to obtain a first multi-phase alternating current for outputting current to different industrial charging stations.

2. The engineering machinery charging device according to claim 1, wherein: The controller (18) is further used to control the direct current provided by the power battery (1) to be distributed sequentially through the high-voltage distribution box (2), the power distribution unit (3) to distribute power, and the inverter boost component (01) to perform inverter boosting, thereby obtaining a second multi-phase alternating current for outputting current to the different industrial charging stations.

3. The engineering machinery charging device according to claim 1, wherein: The controller (18) is also connected to a thermal management system (20) and a power battery management system (19), the high-voltage distribution box (2) is connected to the thermal management system (20), and the power battery management system (19) is respectively connected to the power battery (1) and the thermal management system (20); The power battery management system (19) is used to respond to the heating / cooling instruction issued by the controller (18) and control the thermal management system (20) to heat the power battery (1). or refrigeration.

4. The engineering machinery charging device according to any one of claims 1 to 3, wherein: The controller (18) is also connected to the water pump (22) and the radiator (14). The controller (18) is further configured to control and adjust operating parameters of the water pump (22) and / or the radiator (14) when the operating temperature of the high-voltage component is not within a preset temperature range, so that the adjusted operating temperature is within the preset temperature range. The high-voltage component is at least one of the power distribution unit (3), the inverter (4) and the on-board charger (13); the power distribution unit (3), the inverter (4) and the on-board charger (13) are connected in series via a cooling water pipe; and the inverter (4) belongs to the inverter boost component (01).

5. The engineering machinery charging device according to any one of claims 1 to 3, further comprising a display (17) and a buzzer (23), wherein the controller (18) is connected to the display (17); The display (17) is used to display at least one of a preset plug-in operation mode of the mobile energy storage charging device, a preset AC input mode, a preset AC output mode, charging status information, and fault information of a faulty component during the charging process based on an information display instruction issued by the controller (18); and the buzzer (23) is used to issue an early warning when a fault occurs during the charging process.

6. The engineering machinery charging device according to claim 5, further comprising an intelligent terminal (15) and a low-voltage battery pack (21), wherein the low-voltage battery pack (21) is connected to the power distribution unit (3), and the controller (18) is connected to the intelligent terminal (15); The controller (18) is further configured to control the high voltage power supply on the mobile energy storage charging device when the intelligent terminal (15) detects that the voltage of the low voltage power supply system is lower than a preset voltage threshold; The power distribution unit (3) is used to replenish power for the low-voltage battery pack (21) in response to a power replenishment instruction issued by the controller (18).

7. The engineering machinery charging device according to claim 6, wherein: The smart terminal (15) is also connected to the smart terminal application; The smart terminal (15) is further configured to report the vehicle location to the controller (18) and to receive a charging reservation instruction issued by the smart terminal application; The controller (18) is further configured to respond to the scheduled charging instruction and control the target device that requests scheduled charging to perform scheduled charging; wherein the target device is the power battery (1), At least one of a power battery management system (19), a power distribution unit (3), an inverter (4), a transformer (5) and an on-board charger (13).

8. The engineering machinery charging device according to any one of claims 1 to 3, further comprising an emergency stop switch (24); The emergency stop switch (24) is used to respond to a user's pressing operation and execute an emergency stop process of the entire vehicle; The controller (18) is further configured to control the execution of a shutdown or power-off operation when an emergency fault is detected and the emergency stop switch (24) does not receive the pressing operation.

9. The engineering machinery charging device according to any one of claims 1 to 3, wherein: The inverter boost component (01) includes an inverter (4) and a transformer (5), the power distribution unit (3) is connected to the inverter (4) and the transformer (5) in sequence, the transformer (5) is connected to a circuit breaker group (6), and the circuit breaker group (6) is connected to different industrial charging bases; The inverter (4) is used to invert the input direct current into multi-phase alternating current; The transformer (5) is used to isolate the multi-phase boosted voltage into the first multi-phase alternating current or the second multi-phase alternating current; The circuit breaker group (6) is used to control the switch of each industrial charging seat to output current to each industrial charging seat.

10. An electric engineering machine, comprising the engineering machine charging device according to any one of claims 1 to 9.

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