A power control system and electric forklift

Abstract

The utility model embodiment discloses a power control system and an electric forklift, the power control system includes an integrated controller, a high-voltage direct current module and a drive motor module; the integrated controller includes a high-voltage direct current input terminal and a high-voltage alternating current output terminal, the high-voltage direct current input terminal is electrically connected to the high-voltage direct current module, and the high-voltage alternating current output terminal is electrically connected to the drive motor module; the integrated controller receives the high-voltage direct current supplied by the high-voltage direct current module through the high-voltage direct current input terminal, and converts the high-voltage direct current into high-voltage alternating current, and adjusts the amplitude and / or frequency of the high-voltage alternating current, and provides the high-voltage alternating current to the drive motor module through the high-voltage alternating current output terminal to control the operation of the drive motor module. The power control system is conducive to improving the vehicle performance of large-tonnage electric vehicles, improving the energy transfer efficiency of high-voltage electricity, and is conducive to improving the application performance of the drive motor module.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of electric forklifts, and in particular to a power control system and an electric forklift. Background Art

[0002] Existing forklifts are primarily powered by diesel engines and low-voltage power supplies. However, with the advancement of socio-economic technology and heightened environmental protection requirements, electric forklifts are replacing diesel forklifts. In recent years, the proportion of electric forklifts in small and medium-sized tonnage (for example, with a rated load of 3t or less) has continued to rise. The corresponding low-voltage power supply voltage is generally below 120V.

[0003] However, with the continuous development of the electrification trend of forklifts, large-tonnage forklifts (for example, with a rated load of 3 tons or more) are also facing the demand for electrification. At this time, if low-voltage power supply is continued to be used in large-tonnage forklifts, it will lead to problems such as high current, high heat generation and low energy transfer efficiency in the motor inside the forklift. It will also lead to problems such as low power supply power and slow speed, and it cannot meet the driving requirements of large-tonnage electric forklifts. It will also have a significant impact on improving the overall performance of large-tonnage electric forklifts, making it increasingly difficult to improve the overall performance of large-tonnage electric forklifts. Utility Model Content

[0004] The embodiments of the present utility model provide a power control system and an electric forklift, which introduce a high-voltage direct current module into the driving power and utilize an integrated controller to process and control the flow of high-voltage direct current supplied by the high-voltage direct current module, thereby facilitating improvement in the overall vehicle performance of large-tonnage electric vehicles.

[0005] In a first aspect, an embodiment of the present utility model provides a power control system, including an integrated controller, a high-voltage direct current module, and a drive motor module;

[0006] The integrated controller includes a high-voltage direct current input terminal and a high-voltage alternating current output terminal, wherein the high-voltage direct current input terminal is electrically connected to the high-voltage direct current module, and the high-voltage alternating current output terminal is electrically connected to the drive motor module;

[0007] The integrated controller receives the high-voltage direct current supplied by the high-voltage direct current module through the high-voltage direct current input terminal, converts the high-voltage direct current into high-voltage alternating current, and adjusts the amplitude and / or frequency of the high-voltage alternating current, and provides the high-voltage alternating current to the drive motor module through the high-voltage alternating current output terminal to control the operation of the drive motor module.

[0008] Optionally, the drive motor module includes a walking drive motor unit;

[0009] The high-voltage AC output terminal of the integrated controller includes a first high-voltage AC electronic output terminal, and the first high-voltage AC electronic output terminal is electrically connected to the travel drive motor unit;

[0010] The integrated controller provides the high-voltage AC power to the travel drive motor unit through the first high-voltage AC electronic output terminal to control the operation of the travel drive motor unit.

[0011] Optionally, the drive motor module includes a hydraulic pump drive motor unit;

[0012] The high-voltage AC output terminal of the integrated controller includes a second high-voltage AC electronic output terminal, and the second high-voltage AC electronic output terminal is electrically connected to the hydraulic pump drive motor unit;

[0013] The integrated controller provides the high-voltage AC power to the hydraulic pump drive motor unit through the second high-voltage AC electronic output terminal to control the operation of the hydraulic pump drive motor unit.

[0014] Optionally, a low-voltage component module is also included;

[0015] The integrated controller further comprises a low-voltage direct current output terminal, wherein the low-voltage direct current output terminal is electrically connected to the low-voltage component module;

[0016] The integrated controller also receives the high-voltage direct current supplied by the high-voltage direct current module through the high-voltage direct current input end, converts the high-voltage direct current into low-voltage direct current, and provides the low-voltage direct current to the low-voltage component module through the low-voltage direct current output end to control the operation of the low-voltage component module.

[0017] Optionally, the high-voltage AC output terminal is multiplexed into a high-voltage AC input terminal, and the high-voltage DC input terminal is multiplexed into a high-voltage DC output terminal;

[0018] The integrated controller also receives the reverse-drive AC power generated by the reverse-drive power generation of the drive motor module through the high-voltage AC power input terminal, converts the reverse-drive AC power into reverse-drive DC power, and provides the reverse-drive DC power to the high-voltage DC power module through the high-voltage DC power output terminal.

[0019] Optionally, a first external charging module is further included; the high-voltage direct current input terminal is multiplexed as a high-voltage direct current output terminal;

[0020] The integrated controller further includes an external AC power input terminal, wherein the external AC power input terminal is electrically connected to the first external charging module;

[0021] The integrated controller receives the external AC power supplied by the first external charging module through the external AC power input terminal, converts the external AC power into external DC power, and provides the external DC power to the high-voltage DC power module through the high-voltage DC power output terminal.

[0022] Optionally, a second external charging module is further included;

[0023] The high-voltage direct current module includes an external direct current input terminal, and the external direct current input terminal is electrically connected to the second external charging module;

[0024] The high-voltage direct current module receives external direct current supplied by the second external charging module through the external direct current input terminal.

[0025] Optionally, it further includes a water-cooling heat dissipation pipeline; the water-cooling heat dissipation pipeline is arranged on the surface of the integrated controller.

[0026] Optionally, a remote monitoring module is also included;

[0027] The integrated controller further comprises a remote monitoring control terminal, wherein the remote monitoring control terminal is electrically connected to the remote monitoring module;

[0028] The integrated controller provides voltage conversion information and motor control information to the remote monitoring module through the remote monitoring control terminal.

[0029] In a second aspect, an embodiment of the present invention further provides an electric forklift, comprising a power control system as described in any one of the first aspects.

[0030] An embodiment of the utility model provides a power control system and an electric forklift, which includes an integrated controller, a high-voltage direct current module and a drive motor module; the integrated controller includes a high-voltage direct current input terminal and a high-voltage alternating current output terminal, the high-voltage direct current input terminal is electrically connected to the high-voltage direct current module, and the high-voltage alternating current output terminal is electrically connected to the drive motor module; the integrated controller receives high-voltage direct current supplied by the high-voltage direct current module through the high-voltage direct current input terminal, converts the high-voltage direct current into high-voltage alternating current, and adjusts the amplitude and / or frequency of the high-voltage alternating current, and provides high-voltage alternating current to the drive motor module through the high-voltage alternating current output terminal to control the operation of the drive motor module. The power control system introduces a high-voltage DC module into the driving power, and uses an integrated controller to perform voltage processing and control the voltage flow direction of the high-voltage DC power supplied by the high-voltage DC module, overcoming the constraints of the low-voltage power supply on the overall performance of large-tonnage electric vehicles, which is beneficial to improving the overall performance of large-tonnage electric vehicles. The integrated controller can both perform voltage conversion and control the operation of the drive motor module, which is equivalent to integrating the voltage conversion function with the drive control function, effectively simplifying the spatial layout and reducing application costs. In addition, since the high-voltage DC module directly outputs high voltage electricity, the power supply capacity is greater and the power supply speed is faster, which also makes the corresponding drive motor module receive high voltage and small current, reducing the current of the drive motor module, and is also beneficial to improving the application performance of the drive motor module, reducing the heat generation of the drive motor module, improving the energy transfer efficiency of high voltage electricity, extending the service life of the drive motor module, and improving the endurance of the drive motor module and even the entire electric vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a schematic structural diagram of a power control system provided by an embodiment of the present utility model;

[0033] Figure 2 This is a structural diagram of a first surface of an integrated controller provided by an embodiment of the present utility model;

[0034] Figure 3 It is a structural schematic diagram of the second surface of an integrated controller provided by an embodiment of the present utility model. DETAILED DESCRIPTION

[0035] 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.

[0036] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present invention are described based on the angles shown in the accompanying drawings and should not be understood as limitations on the embodiments of the present invention. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is formed "on" or "under" another element, it can not only be formed directly "on" or "under" another element, but can also be formed indirectly "on" or "under" another element through an intermediate element. The terms "first", "second", etc. are only used for descriptive purposes and do not indicate any order, quantity or importance, but are only used to distinguish different components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] The term "including" and its variations used in the present invention are open inclusions, that is, "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment".

[0038] It should be noted that the concepts of "first" and "second" mentioned in this utility model are only used to distinguish the corresponding contents, and are not used to limit the order or mutual dependence.

[0039] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0040] Figure 1 This is a schematic diagram of the structure of a power control system provided by an embodiment of the present utility model. Figure 2 This is a structural diagram of the first surface of an integrated controller provided by an embodiment of the present utility model. Figure 1 and Figure 2As shown, the power control system includes an integrated controller 10, a high-voltage DC module 20 and a drive motor module 30; the integrated controller 10 includes a high-voltage DC input terminal 11 and a high-voltage AC output terminal 12, the high-voltage DC input terminal 11 is electrically connected to the high-voltage DC module 20, and the high-voltage AC output terminal 12 is electrically connected to the drive motor module 30; the integrated controller 10 receives the high-voltage DC power supplied by the high-voltage DC module 20 through the high-voltage DC input terminal 11, converts the high-voltage DC power into high-voltage AC power, and adjusts the amplitude and / or frequency of the high-voltage AC power, and provides high-voltage AC power to the drive motor module 30 through the high-voltage AC output terminal 12 to control the operation of the drive motor module 30.

[0041] Specifically, the power control system includes an integrated controller 10, a high-voltage direct current module 20 and a drive motor module 30. Among them, the high-voltage direct current module 20 can supply high-voltage direct current to the entire electric vehicle. In a specific embodiment, for example, the high-voltage direct current module 20 can be a battery box, and in order to have as much high-voltage direct current as possible, the volume of the battery box is relatively large. In order to rationally utilize the internal space of the electric vehicle and at the same time ensure that there is sufficient power supply for the high-voltage direct current module 20, the number of the battery box can be at least one. That is to say, this embodiment can reduce the volume of a single battery box by setting up multiple battery boxes, so as to facilitate the setting of the battery box and facilitate the maintenance and inspection of each battery box. It should be noted that this embodiment does not limit the specific number of battery boxes, and it can be selected according to actual needs.

[0042] The integrated controller 10 includes a high-voltage direct current (HVDC) input terminal 11 and a high-voltage alternating current (HVAC) output terminal 12. The HVDC input terminal 11 of the integrated controller 10 is electrically connected to the HVDC module 20. Thus, the integrated controller 10 can receive the HVDC supplied by the HVDC module 20 and process the HVDC so that the processed voltage / current meets the power requirements of different parts of the electric vehicle. For example, the integrated controller 10 can convert the received HVDC into HVAC, and the integrated controller 10 can also adjust the amplitude and / or frequency of the converted HVAC. The HVAC output terminal 12 of the integrated controller 10 is electrically connected to the drive motor module 30. Thus, the HVAC converted and / or regulated by the integrated controller 10 can be provided to the drive motor module 30, which can then operate under the action of the HVAC. That is, the integrated controller 10 can reasonably distribute the received high-voltage direct current to the drive motor modules 30 that need power / operation. The use of the integrated controller 10 for centralized power distribution facilitates wiring layout, improves the electrical protection level, and can fully guarantee the safety of the high-voltage system. In addition, the use of the integrated controller 10 for centralized control is conducive to improving the integration and control performance of the entire vehicle. For example, the drive motor module 30 may include multiple motors. The integrated controller 10 can convert the received high-voltage direct current into multiple high-voltage alternating currents of different amplitudes and frequencies, and the number of motors is the same as the number of high-voltage alternating currents, so as to control each motor to operate under the action of the high-voltage alternating current that is suitable for itself. Among them, the multiple motors in the drive motor module 30 can be understood as a parallel structure. The integrated controller 10 controls each motor independently, and the operation of each motor is not affected by each other. Furthermore, illustratively, fuses or other protective measures may be provided in the wiring connecting the multiple motors in the drive motor module 30 to the high-voltage AC output terminal 12 of the integrated controller 10 to ensure that a failure of any one motor does not affect the normal operation of the other motors. Furthermore, illustratively, a fast-acting disconnect 17 or other protective measures may also be provided in the integrated controller 10 to ensure that a failure of the integrated controller 10 does not affect the normal operation of the high-voltage DC module 20 and the drive motor module 30.

[0043] It is understood that the integrated controller 10 can both perform voltage conversion and control the operation of the drive motor module 30, which is equivalent to integrating the voltage conversion function with the drive control function, effectively simplifying the spatial layout, reducing the number of components used, and lowering the application cost. Furthermore, for example, the high-voltage DC input terminal 11 and the high-voltage AC output terminal 12 in the integrated controller 10 can be port structures. That is, the high-voltage DC module 20 can be fixedly connected to the port structure of the high-voltage DC input terminal 11 through a port structure to achieve an electrical connection between the high-voltage DC input terminal 11 and the high-voltage DC module 20; the drive motor module 30 can also be fixedly connected to the port structure of the high-voltage AC output terminal 12 through a port structure to achieve an electrical connection between the high-voltage AC output terminal 12 and the drive motor module 30. This facilitates the installation of the integrated controller 10, the high-voltage DC module 20, and the drive motor module 30, and also facilitates subsequent maintenance and repair of any of the integrated controller 10, the high-voltage DC module 20, and the drive motor module 30. Similarly, the input terminals and output terminals involved in the following embodiments can all be understood as port structures. And, illustratively, the port structure of the high-voltage direct current input terminal 11 and the high-voltage alternating current output terminal 12 in the integrated controller 10 can be adaptively selected to include a positive and a negative power line in the port structure, or the port structure includes a three-phase power line, according to the type of voltage transmitted (illustratively, direct current and alternating current). Similarly, the port structure of the input terminals and output terminals involved in the following embodiments can be adaptively selected to include a positive and a negative power line in the port structure, or the port structure includes a three-phase power line, according to the type of voltage transmitted. Thus, in a specific embodiment, it can be understood that a plurality of port structures are provided on the surface of the housing 18 of the integrated controller 10, and the integrated controller 10 can utilize each port structure to achieve electrical connection with other modules.

[0044] The technical solution in the embodiment of the present utility model is that the power control system includes an integrated controller, a high-voltage direct current module and a drive motor module; the integrated controller includes a high-voltage direct current input terminal and a high-voltage alternating current output terminal, the high-voltage direct current input terminal is electrically connected to the high-voltage direct current module, and the high-voltage alternating current output terminal is electrically connected to the drive motor module; the integrated controller receives high-voltage direct current supplied by the high-voltage direct current module through the high-voltage direct current input terminal, converts the high-voltage direct current into high-voltage alternating current, and adjusts the amplitude and / or frequency of the high-voltage alternating current, and provides high-voltage alternating current to the drive motor module through the high-voltage alternating current output terminal to control the operation of the drive motor module. This power control system introduces a high-voltage direct current module into an electric vehicle, and uses an integrated controller to perform voltage processing and control the voltage flow of the high-voltage direct current supplied by the high-voltage direct current module, overcoming the constraints of low-voltage power supply on the overall performance of large-tonnage electric vehicles, which is beneficial to improving the overall performance of large-tonnage electric vehicles. The integrated controller can both perform voltage conversion and control the operation of the drive motor module, which is equivalent to integrating the voltage conversion function with the drive control function, effectively simplifying the spatial layout and reducing application costs. In addition, since the high-voltage direct current module directly outputs high voltage electricity, the power supply capacity is greater and the power supply speed is faster, which also makes the corresponding drive motor module receive high voltage and low current, reducing the current of the drive motor module, and is also beneficial to improving the application performance of the drive motor module, reducing the heat generated by the drive motor module, improving the energy transfer efficiency of high voltage electricity, extending the service life of the drive motor module, and improving the endurance of the drive motor module and even the entire electric vehicle.

[0045] Optionally, continue to refer to Figure 1 and Figure 2 The drive motor module 30 includes a walking drive motor unit 31; the high-voltage AC power output terminal 12 of the integrated controller 10 includes a first high-voltage AC electronic output terminal 121, and the first high-voltage AC electronic output terminal 121 is electrically connected to the walking drive motor unit 31; the integrated controller 10 provides high-voltage AC power to the walking drive motor unit 31 through the first high-voltage AC electronic output terminal 121 to control the operation of the walking drive motor unit 31.

[0046] Specifically, the drive motor module 30 includes a walking drive motor unit 31. The high-voltage AC output terminal 12 of the integrated controller 10 includes a first high-voltage AC electronic output terminal 121, and the first high-voltage AC electronic output terminal 121 is electrically connected to the walking drive motor unit 31, so that the high-voltage AC converted and / or regulated by the integrated controller 10 can be provided to the walking drive motor unit 31, and the walking drive motor unit 31 can operate under the action of the high-voltage AC. Exemplarily, during the operation of the walking drive motor unit 31, the electric vehicle can perform forward, backward, left, and right movement. In addition, exemplarily, one walking drive motor unit 31 can correspond to the forward, backward, left, and right movement of four wheels, thereby realizing the distributed drive of the walking drive motor unit 31.

[0047] Optionally, continue to refer to Figure 1 and Figure 2 The drive motor module 30 includes a hydraulic pump drive motor unit 32; the high-voltage AC power output terminal 12 of the integrated controller 10 includes a second high-voltage AC electronic output terminal 122, and the second high-voltage AC electronic output terminal 122 is electrically connected to the hydraulic pump drive motor unit 32; the integrated controller 10 provides high-voltage AC power to the hydraulic pump drive motor unit 32 through the second high-voltage AC electronic output terminal 122 to control the operation of the hydraulic pump drive motor unit 32.

[0048] Specifically, the drive motor module 30 includes a hydraulic pump drive motor unit 32. The high-voltage AC output terminal 12 of the integrated controller 10 includes a second high-voltage AC electronic output terminal 122, and the second high-voltage AC electronic output terminal 122 is electrically connected to the hydraulic pump drive motor unit 32, so that the high-voltage AC power converted and / or regulated by the integrated controller 10 can be provided to the hydraulic pump drive motor unit 32, and the hydraulic pump drive motor unit 32 can operate under the action of the high-voltage AC power. For example, during the operation of the hydraulic pump drive motor unit 32, the electric vehicle can perform lifting, retracting and stretching movements. In addition, for example, one hydraulic pump drive motor unit 32 can correspond to the mechanical movement of multiple components, thereby realizing the distributed drive of the hydraulic pump drive motor unit 32.

[0049] Optionally, continue to refer to Figure 1 and Figure 2 The power control system also includes a low-voltage component module 40; the integrated controller 10 also includes a low-voltage DC output terminal 13, which is electrically connected to the low-voltage component module 40; the integrated controller 10 also receives high-voltage DC power supplied by the high-voltage DC module 20 through the high-voltage DC input terminal 11, converts the high-voltage DC power into low-voltage DC power, and provides low-voltage DC power to the low-voltage component module 40 through the low-voltage DC output terminal 13 to control the operation of the low-voltage component module 40.

[0050] Specifically, the power control system also includes a low-voltage component module 40. Exemplarily, the low-voltage component module 40 includes the electric vehicle's lights, alarms, instruments, and other low-voltage components. The integrated controller 10 includes a high-voltage DC input terminal 11 and a low-voltage DC output terminal 13. The high-voltage DC input terminal 11 of the integrated controller 10 is electrically connected to the high-voltage DC module 20. This allows the integrated controller 10 to receive the high-voltage DC power supplied by the high-voltage DC module 20 and process it to meet the power requirements of different components of the electric vehicle. Exemplarily, the integrated controller 10 can also convert the received high-voltage DC power into low-voltage DC power, reducing its amplitude. The low-voltage DC output terminal 13 of the integrated controller 10 is electrically connected to the low-voltage component module 40. This low-voltage DC power, converted by the integrated controller 10, can be supplied to the low-voltage component module 40, which then operates under the power of this low-voltage DC power. That is, the integrated controller 10 can reasonably distribute the received high-voltage direct current to the low-voltage component modules 40 that need electricity / operation. The use of the integrated controller 10 for centralized power distribution makes the wiring layout convenient, improves the electrical protection level, and can fully ensure the safety of the high-voltage system.

[0051] Optionally, continue to refer to Figure 1 and Figure 2 The high-voltage AC output terminal 12 is multiplexed as a high-voltage AC input terminal, and the high-voltage DC input terminal 11 is multiplexed as a high-voltage DC output terminal; the integrated controller 10 also receives the reverse-drag AC power generated by the reverse-drag power generation of the drive motor module 30 through the high-voltage AC input terminal, and converts the reverse-drag AC power into reverse-drag DC power, and provides the reverse-drag DC power to the high-voltage DC module 20 through the high-voltage DC output terminal.

[0052] Specifically, this embodiment can be understood as a power control system with reverse energy transfer capabilities. That is, the drive motor module 30 can generate reverse power during operation, acting as a generator. The high-voltage AC output terminal 12 is multiplexed as a high-voltage AC input terminal, and the high-voltage DC input terminal 11 is multiplexed as a high-voltage DC output terminal. Specifically, the high-voltage AC input terminal of the integrated controller 10 is electrically connected to the drive motor module 30. This allows the reverse AC power generated by the reverse power generation by the drive motor module 30 to be transmitted to the integrated controller 10. The integrated controller 10 can also process the received reverse AC power. For example, the integrated controller 10 can convert the received reverse AC power into reverse DC power. The high-voltage DC output terminal of the integrated controller 10 is electrically connected to the high-voltage DC module 20. This allows the integrated controller 10 to provide the converted reverse DC power to the high-voltage DC module 20 for storage, effectively improving the high-voltage energy transfer efficiency of the electric vehicle. For example, the drive motor module 30 may include multiple motors, and the reverse-drive AC power generated by each motor during the reverse-drive power generation process can be converted by the integrated controller 10 and transmitted to the high-voltage DC module 20.

[0053] Optionally, continue to refer to Figure 1 and Figure 2 The power control system also includes a first external charging module 50; the high-voltage DC input terminal 11 is multiplexed as a high-voltage DC output terminal; the integrated controller 10 also includes an external AC input terminal 14, which is electrically connected to the first external charging module 50; the integrated controller 10 receives external AC power supplied by the first external charging module 50 through the external AC input terminal 14, converts the external AC power into external DC power, and provides external DC power to the high-voltage DC module 20 through the high-voltage DC output terminal.

[0054] Specifically, this embodiment can be understood as indirect charging of the high-voltage DC module 20. The first external charging module 50 can provide external AC power. The integrated controller 10 also includes an external AC input terminal 14, which is electrically connected to the first external charging module 50. Thus, the external AC power supplied by the first external charging module 50 can be transmitted to the integrated controller 10. The integrated controller 10 can convert the received external AC power into external DC power. The high-voltage DC input terminal 11 is multiplexed as a high-voltage DC output terminal. That is, the high-voltage DC output terminal of the integrated controller 10 is electrically connected to the high-voltage DC module 20. Thus, the integrated controller 10 can provide the converted external DC power to the high-voltage DC module 20, where it is stored.

[0055] Optionally, continue to refer to Figure 1 and Figure 2 The power control system also includes a second external charging module 60; the high-voltage DC module 20 includes an external DC input terminal 21, and the external DC input terminal 21 is electrically connected to the second external charging module 60; the high-voltage DC module 20 receives the external DC power supplied by the second external charging module 60 through the external DC input terminal 21.

[0056] Specifically, this embodiment can be understood as direct charging of the HVDC module 20. The second external charging module 60 can provide external DC power. The HVDC module 20 includes an external DC power input terminal 21, which is electrically connected to the second external charging module 60. This allows the external DC power supplied by the second external charging module 60 to be directly transferred to the HVDC module 20 and stored there.

[0057] Optionally, Figure 3 This is a schematic structural diagram of the second surface of an integrated controller provided by an embodiment of the present utility model. Figure 1 、 Figure 2 and Figure 3 As shown, the power control system further includes a water-cooling heat dissipation pipeline 70 ; the water-cooling heat dissipation pipeline 70 is arranged on the surface of the integrated controller 10 .

[0058] Specifically, the water-cooled heat dissipation pipe 70 can be used to dissipate heat from the integrated controller 10, thereby improving the heat dissipation effect of the integrated controller 10, thereby enhancing the voltage conversion and motor control performance of the electric vehicle. In addition, it should be noted that the first surface and the second surface of the integrated controller 10 defined in this embodiment can be understood as two surfaces of the integrated controller 10 that are opposite to each other. For example, the first surface of the integrated controller 10 can be the front surface of the integrated controller 10, and the second surface of the integrated controller 10 can be the back surface of the integrated controller 10.

[0059] Optionally, continue to refer to Figure 1 and Figure 2 The power control system also includes a remote monitoring module 80; the integrated controller 10 also includes a remote monitoring control terminal 15, which is electrically connected to the remote monitoring module 80; the integrated controller 10 provides voltage conversion information and motor control information to the remote monitoring module 80 through the remote monitoring control terminal 15.

[0060] Specifically, this embodiment can be understood as data monitoring of the power control system. The integrated controller 10 also includes a remote monitoring control terminal 15, which is electrically connected to a remote monitoring module 80. This allows the integrated controller 10 to provide its own voltage conversion information and motor control information to the remote monitoring module 80, allowing the user to obtain timely internal data of the power control system. Furthermore, by way of example, the remote monitoring module 80 can also be electrically connected to the high-voltage direct current module 20 to monitor information such as the power generation and remaining power of the high-voltage direct current module 20 in real time. The remote monitoring module 80 can also be electrically connected to the drive motor module 30 to monitor information such as the power consumption, power generation, voltage, current, power, and speed of the drive motor module 30 in real time.

[0061] In addition, illustratively, the power control system further includes a control panel module 90, and the integrated controller 10 further includes a control panel control terminal 16. The control panel control terminal 16 is electrically connected to the control panel module 90, and the integrated controller 10 can receive control information of the control panel module 90 through the control panel control terminal 16. Figure 1 、 Figure 2 and Figure 3 (not shown), the Beidou positioning module is electrically connected to the integrated controller 10, and the Beidou positioning module can realize the automatic positioning function of the power control system.

[0062] Based on the same concept, the present invention also provides an electric forklift, which includes a power control system as provided in any of the embodiments of the present invention. Therefore, the electric forklift provided by the embodiments of the present invention possesses the corresponding beneficial effects of the power control system provided by the embodiments of the present invention, which will not be further elaborated here. Furthermore, it should be noted that the power control system provided by any of the embodiments of the present invention can also be applied to mobile machinery such as loaders. This embodiment is merely an example and not a limitation.

[0063] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A power control system, characterized in that: It includes an integrated controller, a high voltage direct current module and a drive motor module; The integrated controller comprises a high-voltage direct current input terminal and a high-voltage alternating current output terminal, wherein the high-voltage direct current input terminal is electrically connected to the high-voltage direct current module, and the high-voltage alternating current output terminal is electrically connected to the drive motor module; The integrated controller receives the high-voltage direct current supplied by the high-voltage direct current module through the high-voltage direct current input terminal, converts the high-voltage direct current into high-voltage alternating current, and adjusts the amplitude and / or frequency of the high-voltage alternating current, and provides the high-voltage alternating current to the drive motor module through the high-voltage alternating current output terminal to control the operation of the drive motor module.

2. The power control system according to claim 1, characterized in that: The drive motor module includes a walking drive motor unit; The high-voltage AC output terminal of the integrated controller includes a first high-voltage AC electronic output terminal, and the first high-voltage AC electronic output terminal is electrically connected to the walking drive motor unit; The integrated controller provides the high-voltage AC power to the travel drive motor unit through the first high-voltage AC electronic output terminal to control the operation of the travel drive motor unit.

3. The power control system according to claim 1, characterized in that: The drive motor module includes a hydraulic pump drive motor unit; The high-voltage AC output terminal of the integrated controller includes a second high-voltage AC electronic output terminal, and the second high-voltage AC electronic output terminal is electrically connected to the hydraulic pump drive motor unit; The integrated controller provides the high-voltage AC power to the hydraulic pump drive motor unit through the second high-voltage AC electronic output terminal to control the operation of the hydraulic pump drive motor unit.

4. The power control system according to claim 1, characterized in that: Also included are low voltage component modules; The integrated controller further comprises a low-voltage direct current output terminal, wherein the low-voltage direct current output terminal is electrically connected to the low-voltage component module; The integrated controller also receives the high-voltage direct current supplied by the high-voltage direct current module through the high-voltage direct current input terminal, converts the high-voltage direct current into low-voltage direct current, and provides the low-voltage direct current to the low-voltage component module through the low-voltage direct current output terminal to control the operation of the low-voltage component module.

5. The power control system according to claim 1, characterized in that: The high-voltage AC output terminal is multiplexed as a high-voltage AC input terminal, and the high-voltage DC input terminal is multiplexed as a high-voltage DC output terminal; The integrated controller also receives the reverse-drive AC power generated by the reverse-drive power generation of the drive motor module through the high-voltage AC power input terminal, converts the reverse-drive AC power into reverse-drive DC power, and provides the reverse-drive DC power to the high-voltage DC power module through the high-voltage DC power output terminal.

6. The power control system according to claim 1, characterized in that: It also includes a first external charging module; the high-voltage direct current input terminal is multiplexed as a high-voltage direct current output terminal; The integrated controller further comprises an external AC power input terminal, wherein the external AC power input terminal is electrically connected to the first external charging module; The integrated controller receives the external AC power supplied by the first external charging module through the external AC power input terminal, converts the external AC power into external DC power, and provides the external DC power to the high-voltage DC power module through the high-voltage DC power output terminal.

7. The power control system according to claim 1, characterized in that: Also included is a second external charging module; The high-voltage direct current module comprises an external direct current input terminal, and the external direct current input terminal is electrically connected to the second external charging module; The high-voltage direct current module receives the external direct current supplied by the second external charging module through the external direct current input terminal.

8. The power control system according to claim 1, characterized in that: It also includes a water-cooling heat dissipation pipeline; the water-cooling heat dissipation pipeline is arranged on the surface of the integrated controller.

9. The power control system according to claim 1, characterized in that: It also includes a remote monitoring module; The integrated controller further comprises a remote monitoring control terminal, wherein the remote monitoring control terminal is electrically connected to the remote monitoring module; The integrated controller provides voltage conversion information and motor control information to the remote monitoring module through the remote monitoring control terminal.

10. An electric forklift, characterized in that: It comprises a power control system as claimed in any one of claims 1 to 9.

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