A power system and lifting device

Abstract

This application relates to the field of power system technology, and specifically discloses a power system and lifting device, including a motor; a pump disposed on one side of the motor and drivenly connected to the motor; an oil tank disposed on the side of the pump away from the motor and connected to the pump; a mounting housing detachably mounted on the other side of the motor, the mounting housing having a mounting cavity; a motor control component disposed within the mounting cavity and connected to the motor; and an ECU component disposed within the mounting cavity and connected to the motor control component. Through the above method, this application embodiment can reduce the internal space occupied by the power system on the lifting platform.

Description

Technical Field

[0001] This application relates to the field of power system technology, and in particular to a power system and lifting device. Background Technology

[0002] Scissor lift platforms are used in factory maintenance, warehouse picking, airport support, construction, and other applications where people or goods need to be vertically lifted to a preset working height. The power system of a scissor lift platform typically includes an Electronic Control Unit (ECU), a motor controller, a drive motor, a hydraulic pump, and an oil tank, all of which are electrically connected via cables.

[0003] The inventors of this application have discovered that the ECU, motor controller, drive motor, hydraulic pump, and oil tank in the power system are usually installed separately, which can easily cause the entire power system to occupy the internal space of the scissor lift platform, resulting in low space utilization within the scissor lift platform. Utility Model Content

[0004] In view of the above problems, the present application provides a power system and lifting device that overcomes or at least partially solves the above problems.

[0005] According to one aspect of this application, a power system is provided, including an electric motor; a pump disposed on one side of the electric motor and drivenly connected to the electric motor; an oil tank disposed on the side of the pump opposite to the electric motor and connected to the pump; a mounting housing detachably mounted on the other side of the electric motor, the mounting housing having a mounting cavity; a motor control assembly disposed within the mounting cavity and connected to the electric motor; and an ECU assembly disposed within the mounting cavity and connected to the motor control assembly.

[0006] In one alternative embodiment, the power system further includes a heat shield that is detachably mounted on the side of the motor away from the pump, the side of the heat shield away from the motor abutting against the mounting housing, and the heat shield being located between the motor and the mounting housing.

[0007] In one alternative embodiment, the mounting housing is further provided with an opening communicating with the mounting cavity, and a baffle is also provided inside the mounting housing. The baffle is disposed inside the mounting cavity and located at the opening, and the baffle is detachably connected to the side of the motor away from the pump.

[0008] In one alternative embodiment, the ECU assembly includes an ECU circuit board, connection terminals connected to the ECU circuit board, and terminal plugs inserted into the connection terminals. The ECU circuit board is fixed relative to the baffle and electrically connected to the motor control assembly. A portion of the connection terminals extends from the mounting housing.

[0009] In one alternative embodiment, the ECU assembly includes an ECU circuit board with a connecting post extending toward the motor control assembly and electrically connected to the motor control assembly.

[0010] In one optional embodiment, the motor control assembly includes a base plate, a control board, and a capacitor board. The control board and the capacitor board are both electrically connected to the base plate. The control board is positioned closer to the ECU assembly than the base plate and is connected to the ECU assembly. The mounting housing also has a first hole and a second hole communicating with the mounting cavity, with the first hole and the second hole spaced apart. The motor control assembly further includes a busbar, a first terminal, and a second terminal. The busbar is electrically connected to the base plate and is located between the control board and the base plate. The first terminal and the second terminal are electrically connected to the busbar. The end of the first terminal facing away from the busbar extends from the first hole, and the end of the second terminal facing away from the busbar extends from the second hole.

[0011] In one alternative embodiment, the motor control assembly further includes a first sealing ring and a second sealing ring, wherein the first sealing ring is sleeved on the first terminal and the second sealing ring is sleeved on the second terminal, the first sealing ring being located in the gap between the first terminal and the first hole, and the second sealing ring being located in the gap between the second terminal and the second hole.

[0012] In one alternative embodiment, the power system further includes a support base disposed below the motor and the mounting housing, one end of the support base being detachably connected to the lower part of the motor, and the other end of the support base being detachably connected to the lower part of the mounting housing.

[0013] In one alternative embodiment, the support base includes a first connecting plate, a second connecting plate, a third connecting plate, a first support plate, and a second support plate. The second connecting plate is connected to the motor and the mounting housing. One end of the first connecting plate is connected to one end of the second connecting plate, and one end of the third connecting plate is connected to the other end of the second connecting plate. The first support plate is disposed at the other end of the first connecting plate, and the second support plate is disposed at the other end of the third connecting plate. The support base is shaped like a "V".

[0014] According to another aspect of this application, a lifting device is provided, including the power system described above.

[0015] The beneficial effects of this application embodiment are as follows: Unlike existing technologies, this application embodiment includes a motor, pump, oil tank, mounting housing, motor control component, and ECU component. The pump is located on one side of the motor and is connected to the motor drive. The oil tank is located on the side of the pump away from the motor and is connected to the pump. The mounting housing is detachably mounted on the other side of the motor and has a mounting cavity. The motor control component is located within the mounting cavity and connected to the motor. The ECU component is also located within the mounting cavity and connected to the motor control component. Compared to related technologies where the ECU, motor controller, drive motor, hydraulic pump, and oil tank are typically installed separately, this application embodiment integrates the motor, pump, oil tank, and mounting housing into one unit, and integrates the motor control component and ECU component within the mounting housing. This integration reduces the overall size of the power system and the internal space occupied by the entire power system on the scissor lift platform, thereby improving the space utilization rate within the scissor lift platform. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a partial structural schematic diagram of the power system according to an embodiment of this application; Figure 2 This is an exploded view of a portion of the power system structure according to an embodiment of this application. Figure 3 This is a partial exploded view of the power system structure according to an embodiment of this application. Detailed Implementation

[0018] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0020] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0021] Please see Figure 1 The power system 1000 includes a motor 10, a pump 20, a fuel tank 30, a mounting housing 40, a motor control assembly 50, and an ECU assembly 60. The pump 20 is located on one side of the motor 10 and is drive-connected to it. The fuel tank 30 is located on the side of the pump 20 away from the motor 10 and is connected to it. The mounting housing 40 is located on the other side of the motor 10. Both the motor control assembly 50 and the ECU assembly 60 are housed within the mounting housing 40, and the ECU assembly 60 is connected to the motor control assembly 50. The following provides a detailed description of the motor 10, pump 20, fuel tank 30, mounting housing 40, motor control assembly 50, and ECU assembly 60.

[0022] For the aforementioned motor 10, pump 20, and oil tank 30, such as Figure 1 and Figure 2As shown, pump 20 is located on one side of motor 10 and is drivenly connected to motor 10. Oil tank 30 is located on the side of pump 20 away from motor 10 and is connected to pump 20. Motor 10 is the power source of the entire power system, converting electrical energy into mechanical energy to power pump 20. When motor 10 starts, its rotor begins to rotate, driving the rotor or impeller of pump 20 to rotate via mechanical connection. The impeller or rotor of pump 20 rotates under the drive of motor 10, creating a vacuum low-pressure environment at the oil inlet, thereby drawing oil from oil tank 30 into the pump body. After entering the pump body, the oil is pressurized by the centrifugal force generated by the high-speed rotation of the impeller or rotor. The pressurized oil is output through the oil outlet and transported to other components of the power system through pipelines. Oil tank 30 serves to store oil.

[0023] For the aforementioned mounting housing 40, motor control assembly 50, and ECU assembly 60, such as Figures 1-3 As shown, the mounting housing 40 is detachably mounted on the other side of the motor 10. The mounting housing 40 is provided with a mounting cavity 40a. The motor control component 50 is disposed within the mounting cavity 40a and connected to the motor 10. The ECU component 60 is disposed within the mounting cavity 40a and connected to the motor control component 50. The motor control component 50 is used to control the motor 10, including controlling the current and voltage of the motor 10. The motor control component 50 can also provide overcurrent and overvoltage protection for the motor 10. The ECU component 60 is the central control unit of the power system, responsible for coordinating the operation of the entire power system. The ECU component 60 can switch the system's operating state according to different working modes and requirements, such as energy-saving mode and high-performance mode.

[0024] It should be noted that the ECU component 60 collects system operating data through various sensors (such as temperature sensors, pressure sensors, speed sensors, etc.), analyzes and processes the collected data to determine whether the system's operating status is normal, and promptly detects potential faults. Based on the system's operating requirements and sensor data, the ECU component 60 generates control commands and sends these commands to the motor control component 50 via the communication interface. The motor control component 50 feeds back the operating status of the motor 10 (such as current, voltage, temperature, etc.) to the ECU component 60, which then performs further analysis and adjustments based on this data.

[0025] In some embodiments, the mounting housing 40 is further provided with an opening 40b communicating with the mounting cavity 40a. A baffle 401 is also provided inside the mounting housing 40, located within the mounting cavity 40a and at the opening 40b. The baffle 401 is detachably connected to the side of the motor 10 facing away from the pump 20, thereby fixing the mounting housing 40 relatively to the motor 10. It is understood that the detachable connection between the baffle 401 and the motor 10 includes, but is not limited to, screwing, riveting, etc.

[0026] In some embodiments, the mounting housing 40 is further provided with a connecting through hole 40c that communicates with the mounting cavity 40a. The connecting through hole 40c allows some components in the ECU assembly 60 to extend out, so as to facilitate the connection of the ECU assembly 60 with external electrical equipment.

[0027] In some embodiments, the mounting housing 40 is further provided with a first hole 40d and a second hole 40e communicating with the mounting cavity 40a. The first hole 40d and the second hole 40e are spaced apart. The first hole 40d and the second hole 40e allow some components in the motor control assembly 50 to extend out, so as to facilitate the connection of the motor control assembly 50 with external devices.

[0028] In some embodiments, the ECU assembly 60 includes an ECU circuit board 601, a connection terminal 602 connected to the ECU circuit board 601, and a terminal plug 603 inserted into the connection terminal 602. The ECU circuit board 601 is fixed relative to the baffle 401 and electrically connected to the motor control assembly 50. A portion of the connection terminal 602 extends from the mounting housing 40. In some embodiments, a portion of the connection terminal 602 extends from the connection through hole 40c. The terminal plug 603 can be inserted into an external device, thereby establishing an electrical connection between the connection terminal 602 and the external device, thus realizing an electrical connection between the ECU circuit board 601 and the external device.

[0029] In some embodiments, the ECU circuit board 601 is provided with a connecting post 6011, which extends toward the motor control component 50 and is electrically connected to the motor control component 50, thereby realizing the electrical connection between the ECU circuit board 601 and the motor control component 50. It is understood that the electrical connection between the ECU circuit board 601 and the motor control component 50 is not limited to the connection via the connecting post 6011 described above; other methods may also be used, such as connecting wires.

[0030] In some embodiments, the motor control assembly 50 includes a substrate 501, a control board 502, and a capacitor board 503. Both the control board 502 and the capacitor board 503 are electrically connected to the substrate 501. The control board 502 is positioned closer to the ECU assembly 60 than the substrate 501 and is connected to the ECU assembly 60. The substrate 501 can be an aluminum substrate, primarily supporting high-heat-generating electronic components such as power switching transistors (IGBTs, MOS transistors, etc.) and serving as the physical support structure for the motor control assembly 50. In some embodiments, the substrate 501 is a power board, with the power switching transistors required for motor control mounted on it. The control board 502 is the core component of the motor control assembly 50, responsible for implementing the control logic and functions of the motor 10. The control board 502 typically includes a microprocessor, drive circuitry, and sensor interfaces. The capacitor board 503 provides energy storage and filtering functions to ensure power stability and signal quality for the motor control assembly 50. In some embodiments, the connecting post 6011 on the ECU circuit board 601 passes through the control board 502 and connects to the base plate 501, thereby realizing the connection between the ECU circuit board 601 and the base plate 501, and thus realizing the connection between the ECU component 60 and the motor control component 50.

[0031] In some embodiments, the motor control assembly 50 further includes a busbar 504, a first terminal 505, and a second terminal 506. The busbar 504 is electrically connected to the base plate 501 and is located between the control board 502 and the base plate 501. The first terminal 505 and the second terminal 506 are electrically connected to the busbar 504. The end of the first terminal 505 facing away from the busbar 504 extends from the first hole 40d, and the end of the second terminal 506 facing away from the busbar 504 extends from the second hole 40e. Both the first terminal 505 and the second terminal 506 are used to connect to external devices to realize the connection between the motor control assembly 50 and external devices. The busbar 504 serves as an electrical connection and current distribution point.

[0032] In some embodiments, the motor control assembly 50 further includes a first sealing ring 507 and a second sealing ring 508. The first sealing ring 507 is sleeved on the first terminal 505, and the second sealing ring 508 is sleeved on the second terminal 506. The first sealing ring 507 is located in the gap between the first terminal 505 and the first hole 40d, and the second sealing ring 508 is located in the gap between the second terminal 506 and the second hole 40e. The first sealing ring 507 can seal the gap between the first terminal 505 and the first hole 40d, reducing the entry of external dust and water droplets into the mounting housing 40. The second sealing ring 508 can seal the gap between the second terminal 506 and the second hole 40e, reducing the entry of external dust and water droplets into the mounting housing 40, thereby reducing the impact on the electronic components inside the mounting housing 40.

[0033] In some embodiments, please refer to together Figure 2 and Figure 3 , the power system further comprises a heat insulation plate 70, the heat insulation plate 70 is detachably mounted on a side of the motor 10 facing away from the pump 20, a side of the heat insulation plate 70 facing away from the motor 10 abuts against the mounting housing 40, and the heat insulation plate 70 is located between the motor 10 and the mounting housing 40. During operation of the motor 10, a large amount of heat is generated, and the heat insulation plate 70 can reduce the heat generated by the motor 10 from being directly transferred to the mounting housing 40, so as to reduce the influence on the motor control assembly 50 and the ECU assembly 60 in the mounting housing 40.

[0034] In some embodiments, the power system further comprises a support base 80, the support base 80 is disposed below the motor 10 and the mounting housing 40, one end of the support base 80 is detachably connected to the lower part of the motor 10, and the other end of the support base 80 is detachably connected to the lower part of the mounting housing 40. The support base 80 can support the motor 10 and the mounting housing 40, so that the integration between the motor 10 and the mounting housing 40 is more stable.

[0035] In some embodiments, the support base 80 comprises a first connecting plate 801, a second connecting plate 802, a third connecting plate 803, a first support plate 804 and a second support plate 805, the second connecting plate 802 is connected to the motor 10 and the mounting housing 40, one end of the first connecting plate 801 is connected to one end of the second connecting plate 802, one end of the third connecting plate 803 is connected to the other end of the second connecting plate 802, the first support plate 804 is disposed at the other end of the first connecting plate 801, the second support plate 805 is disposed at the other end of the third connecting plate 803, and the support base 80 is in a shape of a Chinese character "ji".

[0036] In this embodiment, a motor 10, a pump 20, an oil tank 30, a mounting housing 40, a motor control component 50, and an ECU component 60 are provided. The pump 20 is located on one side of the motor 10 and is drively connected to the motor 10. The oil tank 30 is located on the side of the pump 20 away from the motor 10 and is connected to the pump 20. The mounting housing 40 is detachably mounted on the other side of the motor 10 and has a mounting cavity 40a. The motor control component 50 is located within the mounting cavity 40a and is connected to the motor 10. The ECU component 60 is located within the mounting cavity 40a and is connected to the motor control component 50. Compared to related technologies, the ECU and motor controller... In contrast to the usual practice of installing the drive motor 10, hydraulic pump, and oil tank 30 separately, this application integrates the motor 10, pump 20, oil tank 30, and mounting housing 40 into one unit, and integrates the motor control component 50 and ECU component 60 within the mounting housing 40. This integration reduces the overall size of the power system, minimizes the space occupied by the power system within the scissor lift platform, and improves the space utilization rate within the scissor lift platform.

[0037] This application also provides an embodiment of a lifting device, which includes the power system 1000 as described above. The function and structure of the power system 1000 are described in the above embodiments and will not be repeated here.

[0038] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A power system, characterized in that, include: Electric motor; A pump is located on one side of the motor, and the pump is connected to the motor in a driving connection. An oil tank is located on the side of the pump away from the motor, and the oil tank is connected to the pump; The mounting housing is detachably mounted on the other side of the motor, and the mounting housing is provided with a mounting cavity; A motor control component is disposed within the mounting cavity and is connected to the motor; An ECU assembly is disposed within the mounting cavity and is connected to the motor control assembly.

2. The power system according to claim 1, characterized in that, The power system also includes a heat insulation plate, which is detachably installed on the side of the motor away from the pump. The side of the heat insulation plate away from the motor abuts against the mounting housing, and the heat insulation plate is located between the motor and the mounting housing.

3. The power system according to claim 2, characterized in that, The mounting housing is also provided with an opening communicating with the mounting cavity. A baffle is also provided inside the mounting housing. The baffle is located inside the mounting cavity and at the opening. The baffle is detachably connected to the side of the motor away from the pump.

4. The power system according to claim 3, characterized in that, The ECU assembly includes an ECU circuit board, connection terminals connected to the ECU circuit board, and terminal plugs inserted into the connection terminals. The ECU circuit board is fixed relative to the baffle and electrically connected to the motor control assembly. A portion of the connection terminals extends out from the mounting housing.

5. The power system according to claim 2, characterized in that, The ECU assembly includes an ECU circuit board, on which a connecting post is provided. The connecting post extends toward the motor control assembly and is electrically connected to the motor control assembly.

6. The power system according to claim 1, characterized in that, The motor control assembly includes a base plate, a control board, and a capacitor board. The control board and the capacitor board are both electrically connected to the base plate. The control board is positioned closer to the ECU assembly than the base plate and is connected to the ECU assembly. The mounting housing is also provided with a first hole and a second hole that communicate with the mounting cavity, and the first hole and the second hole are spaced apart. The motor control assembly further includes a busbar, a first terminal, and a second terminal. The busbar is electrically connected to the base plate and is located between the control board and the base plate. The first terminal and the second terminal are electrically connected to the busbar. The end of the first terminal facing away from the busbar extends out from the first hole, and the end of the second terminal facing away from the busbar extends out from the second hole.

7. The power system according to claim 6, characterized in that, The motor control assembly further comprises a first sealing ring and a second sealing ring, the first sealing ring is sleeved on the first terminal post, the second sealing ring is sleeved on the second terminal post, the first sealing ring is located in the gap between the first terminal post and the first hole, and the second sealing ring is located in the gap between the second terminal post and the second hole.

8. The power system according to claim 1, characterized in that The power system further comprises a support base, the support base is arranged below the motor and the mounting housing, one end of the support base is detachably connected to the lower part of the motor, and the other end of the support base is detachably connected to the lower part of the mounting housing.

9. The power system according to claim 8, characterized in that The support base comprises a first connecting plate, a second connecting plate, a third connecting plate, a first support plate and a second support plate, the second connecting plate is connected to the motor and the mounting housing, one end of the first connecting plate is connected to one end of the second connecting plate, one end of the third connecting plate is connected to the other end of the second connecting plate, the first support plate is arranged at the other end of the first connecting plate, the second support plate is arranged at the other end of the third connecting plate, and the support base is in a Ω-shaped configuration.

10. A lifting device, characterized in that, Comprises the power system according to any one of claims 1-9.

Images