New energy hydraulic lifting equipment

Abstract

The invention relates to the technical field of mechanical lifting transmission and heavy load carrying, in particular to new energy hydraulic lifting equipment. The driving part and the cargo boom are both assembled on the equipment main body; the power supply unit provides electric power for the driving component, and the power supply unit and the driving component cooperatively provide power for lifting of the cargo boom. The power supply unit consists of at least one group of battery packs and a battery mounting bin; the battery mounting bin takes the equipment main body as a mounting base; and the battery pack adopts a pluggable structure and is detachably assembled in the corresponding battery mounting bin. Therefore, on one hand, thorough separation layout of the power supply unit and the control handle is realized, and a power supply load on the control handle is completely stripped, so that the fatigue feeling of an operator during operation is reduced; and on the other hand, by means of the sufficient installation space of the equipment body, the size of the battery installation bin can be planned in a targeted and reasonable mode, the battery capacity does not need to be compressed deliberately for adapting to an installation scene, and then a foundation is laid for improving the cruising ability of the hydraulic lifting equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical lifting transmission and heavy load handling, and particularly relates to a new energy hydraulic lifting device. BACKGROUND

[0002] The hydraulic lifting device is widely applied to warehouse handling, engineering maintenance, logistics loading and unloading and other fields, and its core operation function is realized by driving the lifting arm to complete the lifting action. The installation mode and the rationality of the structure design of the power supply unit as the core power source of the device are directly related to the operation stability, the operation convenience and the operation and maintenance efficiency of the device.

[0003] From the current industry application status, the power supply unit generally adopts an integrated design scheme with an operating handle as an installation carrier, that is, the battery pack and the matching battery installation bin are integrated in the operating handle part. However, in the actual working condition application, many technical drawbacks are gradually exposed, and the specific manifestations are as follows: Firstly, the operating handle as the core control component of the device needs to strictly match the flexible control requirements of the operator, and the structure size, weight distribution and gravity center position all have accurate design standards. After the power supply unit is integrated in the operating handle, the overall weight of the handle is inevitably increased, which intensifies the limb fatigue of the operator during long-time operation, and then reduces the control accuracy, and then affects the operation accuracy; Secondly, the space of the operating handle part is extremely limited, and only small battery packs can be adapted due to the structure size constraint, which directly causes the insufficient endurance of the device and is difficult to meet the working condition requirements of long-time continuous operation; More importantly, the operating handle region is densely wired, and various control lines and power supply lines are intertwined and arranged, and in the process of frequent operation and specific use of the device, the lines are prone to wear and tear, and the joints are prone to looseness, and then the circuit faults such as short circuit and poor contact are induced.

[0004] Therefore, it is urgent for technical personnel to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a new energy hydraulic lifting device, which aims to solve the problems of the increased weight of the handle caused by the integration of the power supply unit in the operating handle, the insufficient endurance caused by the limited space, and the faults caused by the intertwined lines in the existing design.

[0006] This invention relates to a new energy hydraulic lifting device, comprising a main body, a drive component, a lifting arm, and a power supply unit; both the drive component and the lifting arm are mounted on the main body; the drive component is powered by the power supply unit and works together to provide power for the lifting and lowering of the lifting arm; the power supply unit is managed by a battery management system and consists of N battery packs and a battery installation compartment, where N≥1; the battery installation compartment is set up with the main body as the mounting base and is used to accommodate the battery packs.

[0007] As a further improvement to the technical solution disclosed in this invention, the driving component includes a hydraulic pump and a drive motor that is connected to the hydraulic pump; the drive motor is electrically connected to the power supply unit, and the power supply unit supplies electrical energy to drive its operation; the hydraulic pump outputs high-pressure hydraulic oil under the driving force of the drive motor, so that the lifting arm can complete the lifting action.

[0008] As a preferred technical solution, N=1, and the battery mounting compartment is fixedly installed on the side or rear of the main body of the equipment.

[0009] Of course, as another modified design of the above technical solution, N≥2, and the battery mounting compartment can be selectively fixedly installed on the top, side, rear, front and bottom of the main body of the equipment to form a distributed installation structure.

[0010] As a further improvement to the technical solution disclosed in this invention, each battery pack is connected in parallel to form a power supply circuit, and the output terminal of each battery pack is connected to the bus of the power supply circuit to deliver electrical energy to the drive components.

[0011] As a further improvement to the technical solution disclosed in this invention, the battery management system includes a master control switch module and an integrated control module; the integrated control module establishes communication with each battery pack through a CAN bus, and has both control and protection functions; the integrated control module is electrically connected to the power supply circuit and is used to uniformly manage and control all battery packs; when any one or more battery packs malfunction, run out of power, or require maintenance, the master control switch module disconnects the circuit of the corresponding battery pack individually and replaces it, while the remaining normal battery packs continue to supply power to maintain normal equipment operation.

[0012] As a further improvement to the technical solution disclosed in this invention, each battery pack is equipped with an independent sub-battery management system; the sub-battery management system is used to monitor the voltage, current, and temperature of the corresponding battery pack in real time and to provide preliminary circuit protection; the integrated control module establishes a bidirectional communication connection with each sub-battery management system through a CAN bus to realize the collaborative management and data aggregation of all battery packs.

[0013] As a further improvement to the technical solution disclosed in this invention, the sub-battery management system is equipped with a fault diagnosis unit and an active balancing unit. The fault diagnosis unit is used to detect in real time the consistency of individual cells inside the corresponding battery pack, the on / off status of the charging and discharging circuit, and the insulation performance. When the voltage difference of an individual cell exceeds 50mV, the circuit is short-circuited / open-circuited, or the insulation resistance is lower than 1MΩ, the charging and discharging circuit of the battery pack is immediately cut off. During the charging and discharging process of the battery pack, the active balancing unit adjusts the voltage level of each individual cell in real time and controls its voltage deviation within ±30mV.

[0014] In practical applications, the new energy hydraulic lifting device disclosed in this invention can achieve at least the following beneficial technical effects, specifically: 1) The battery installation compartment is set up based on the main body of the equipment, and the battery pack is integrated into the battery installation compartment to form a power supply unit. This achieves a complete separation of the power supply unit and the control handle, completely removing the power supply load on the control handle, thereby reducing the physical exertion of the operator when holding the control handle for a long time. This reduces physical exertion from the structural level, avoids the accumulation of fatigue during operation, and improves operating comfort and work efficiency. 2) The main body of the equipment has ample installation space, which can be used to reasonably plan the size of the battery installation compartment and provide sufficient space for the battery pack. There is no need to reduce the battery capacity to adapt to the installation scenario, thus laying a good foundation for improving the endurance of the hydraulic lifting equipment and meeting the needs of long-term continuous operation. 3) Also thanks to the integrated design of the power supply unit and the main body of the equipment, the circuit connection logic between the power supply unit and the drive components is greatly simplified, effectively reducing circuit redundancy and complex intertwining problems. In this way, not only is the probability of electrical faults reduced, but also convenience is provided for later circuit inspection and maintenance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional schematic diagram of the first embodiment of the horizontal hydraulic jack disclosed in this invention (with the cover plate hidden).

[0017] Figure 2 yes Figure 1 A magnified view of part of I.

[0018] Figure 3This is a three-dimensional schematic diagram of the second embodiment of the horizontal hydraulic jack disclosed in this invention.

[0019] Figure 4 This is a three-dimensional schematic diagram of the third embodiment of the horizontal hydraulic jack disclosed in this invention.

[0020] Figure 5 This is a three-dimensional schematic diagram of the fourth embodiment of the horizontal hydraulic jack disclosed in this invention.

[0021] Figure 6 This is the electrical control flowchart of the fourth embodiment of the horizontal hydraulic jack disclosed in this invention.

[0022] 1-Main body of equipment; 2-Drive components; 21-Hydraulic pump; 22-Drive motor; 23-Hydraulic cylinder; 3-Lifting boom; 4-Power supply unit; 41-Battery pack; 42-Battery installation compartment; 5-Operating handle. Detailed Implementation

[0023] The technical solution of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. Figure 1 A perspective view of the first embodiment of the new energy hydraulic lifting equipment disclosed in this invention is shown. As can be seen from the figure, it is mainly composed of a main body 1, a drive component 2, a lifting arm 3, a power supply unit 4, and a control handle 5. The main body 1 serves as the installation foundation and load-bearing frame for the entire equipment, providing an assembly reference for the drive component 2, lifting arm 3, power supply unit 4, and control handle 5. The drive component 2 and lifting arm 3 are both stably mounted on the main body 1, and together they constitute a complete power transmission and operation execution system. The power supply unit 4 is integrated and mounted on the main body 1, serving as the core power supply component, providing electrical energy support for the operation of the drive component 2. The control handle 5 is assembled and connected to the main body 1, allowing operators to adjust the equipment's working position, control its start / stop and operating status, and achieve convenient operation.

[0024] The drive unit 2 is the core power source that drives the lifting boom 3 to complete the lifting action, and works in conjunction with the power supply unit 4 to achieve power output. For example... Figure 1 As shown, the drive component 2 mainly includes a hydraulic pump 21, a drive motor 22, and a hydraulic cylinder 23. The drive motor 22 is electrically connected to the bus circuit of the power supply unit 4 via wires, and is powered by the power supply unit 4 to drive it to operate at high speed. The hydraulic pump 21 establishes a transmission connection with the drive motor 22. Under the driving force of the drive motor 22, the hydraulic pump 21 draws hydraulic oil from the oil tank and pressurizes it. Then, it delivers the high-pressure hydraulic oil to the hydraulic cylinder 23 through the hydraulic pipeline. The hydraulic cylinder 23 converts hydraulic energy into mechanical energy through telescopic movement, thereby driving the lifting arm 3 to complete the lifting and lowering operations.

[0025] Power supply unit 4, as the core of the equipment's power supply, directly determines the equipment's operational stability and ease of use through its structural design. Figures 1 to 5 As shown, the power supply unit 4 mainly consists of N battery packs 41 (N≥1) and battery mounting compartments 42, and is equipped with a battery management system to achieve power supply management. The battery mounting compartments 42 are set up with the main body 1 as the mounting base, forming a fixed assembly with the main body 1. The battery packs 41 preferably adopt a pluggable structure design, which can be easily disassembled and assembled into the corresponding battery mounting compartments 42, greatly simplifying the process of quick replacement, charging, and daily maintenance of the battery packs 41.

[0026] To adapt to the spatial conditions and battery life requirements of different operating scenarios, this invention provides multiple installation methods for the power supply unit 4, as follows: First implementation method ( Figure 1 N=1, that is, one set of battery pack 41 is set, and the corresponding battery installation compartment 42 is fixed on the side of the main body 1 of the equipment. This can make full use of the idle space on the side of the main body 1 of the equipment, without occupying the core operation area, and making it easy for operators to plug and unplug the battery pack 41 at any time, thus taking into account both space utilization and ease of operation. The second implementation method ( Figure 3 ): N=1, the battery mounting compartment 42 is fixed to the top of the main body 1 (cover plate position), effectively compressing the overall volume occupied by the equipment and making the equipment structure more compact; The third implementation method ( Figure 4 ): N=1, the battery installation compartment 42 is fixed to the rear of the main body 1 of the equipment, which can effectively avoid the core operating area during equipment operation and significantly reduce the risk of the battery pack 41 being accidentally collided during operation; The fourth implementation method ( Figure 5 ): N=2. In this embodiment, two sets of battery packs 41 are set, and the corresponding two battery installation compartments 42 are fixed to the front and rear sides of the main body of the device 1 respectively, forming a distributed installation structure, which can greatly improve the battery storage capacity and extend the device's battery life.

[0027] To achieve flexible adaptation and stable power output of the power supply unit 4, each battery pack 41 integrates at least two battery groups with identical rated voltage and capacity parameters. The battery packs 41 are connected in parallel to form a power supply circuit, and the output of each battery pack 41 is connected to the bus of the power supply circuit to collaboratively deliver power to the drive component 2. The power supply unit 4 is equipped with a circuit connection control module (such as...) adapted to each battery pack 41. Figure 6(As shown); the circuit connection control module detects the actual number of battery packs 41 assembled through sensors and adaptively switches the battery pack connection mode: when only one battery pack 41 is assembled, the battery packs inside the battery pack 41 are connected in series, and the rated working voltage required by the drive component 2 is continuously output; when two or more battery packs 41 are assembled, the battery packs inside each battery pack 41 remain in series, and the whole is powered in parallel, taking into account both voltage stability and range.

[0028] As a further optimization of the technical solution, the circuit connection control module can control the corresponding battery pack 41 to connect to or disconnect the power supply circuit according to the instructions of the integrated control module, combined with the remaining power and working status of each battery pack 41, so as to achieve selective switching of parallel power supply. The judgment criteria and control strategy are as follows: Battery capacity classification: The remaining battery capacity is divided into three levels: ≥80% remaining capacity is defined as "high capacity" and is given priority to be connected to the power supply circuit; 30% ≤ remaining capacity < 80% is defined as "medium capacity" and is flexibly connected according to the equipment load requirements; and <30% remaining capacity is defined as "low capacity" and the power supply circuit is automatically disconnected to avoid damage from over-discharge.

[0029] Load adaptation and allocation: When the equipment is under light load (lifting load < 50% of rated load), only one high-capacity battery pack 41 is started to supply power, reducing unnecessary power loss; when the equipment enters heavy load, all normal battery packs 41 are connected simultaneously, and power is evenly distributed through parallel current sharing control, which not only ensures sufficient power output, but also avoids overload operation of a single battery pack, effectively extending the overall power supply time.

[0030] Regardless of whether the battery pack 41 is a single group or multiple groups, the power supply bus circuit is equipped with a master control switch module, and the main body of the equipment 1 is equipped with an integrated control module (such as...). Figure 6 As shown, the two components together constitute the core components of the battery management system. The integrated control module has control functions, establishes communication with each battery pack 41 via the CAN bus, and is electrically connected to the power supply circuit to achieve unified management and control of all battery packs 41. The power monitoring module establishes a signal connection with the integrated control module, which can collect the remaining power, voltage, and temperature information of each battery pack 41 in real time, and feed the data back to the integrated control module, so that the integrated control module can accurately control the working status of the power supply unit 4. When the number of battery packs 41 is ≥2, if any group fails, runs out of power, or needs maintenance, the master control switch module can cut off the circuit of the corresponding battery pack individually. The operator can replace it individually using the pluggable structure, and the remaining normal battery packs 41 continue to supply power, ensuring uninterrupted equipment operation and improving equipment fault tolerance and operating efficiency.

[0031] Each battery pack 41 is equipped with an independent sub-battery management system, which is integrated inside the battery pack 41 and is responsible for real-time monitoring of voltage, current, and temperature of the corresponding battery pack 41, as well as providing preliminary circuit protection. The integrated control module establishes a bidirectional communication connection with each sub-battery management system via a CAN bus, realizing coordinated management and data aggregation of all battery packs. It can dynamically adjust the output power of each battery pack 41 according to changes in equipment operating load, so as to achieve the optimal power supply efficiency.

[0032] Most importantly, each sub-battery management system is equipped with a fault diagnosis unit and an active balancing unit (such as...). Figure 6 (As shown). The fault diagnosis unit uses a dedicated detection chip to monitor the consistency of individual cells, the continuity of charging and discharging circuits, and insulation performance within the battery pack 41 in real time. When a single cell voltage difference exceeds 50mV, a short circuit / open circuit occurs, or the insulation resistance is below 1MΩ, the charging and discharging circuit of the battery pack 41 is immediately cut off, and a fault alarm signal is sent to the integrated control module via the communication module, facilitating quick location and troubleshooting by operators. During the charging and discharging process of the battery pack 41, the active balancing unit adjusts the voltage level of each individual cell in real time, strictly controlling the voltage deviation within ±30mV to ensure that all individual cells have a consistent charging and discharging state, effectively extending the overall service life of the battery pack 41.

[0033] The integrated design of the power supply unit 4 and the main body of the equipment has multiple core advantages: First, it simplifies the wiring connection logic between the power supply unit 4 and the drive component 2. All power supply lines can be arranged in a standardized manner along the pre-set wiring channels of the main body of the equipment, avoiding redundancy and complex intertwining of lines. This reduces the probability of electrical faults and greatly simplifies the difficulty of subsequent line inspection and maintenance. Second, the main body of the equipment has sufficient installation space. The size and number of battery installation compartments 42 can be flexibly planned according to the operation requirements, providing sufficient space for the battery pack 41. There is no need to reduce the battery capacity to adapt to the installation scenario, ensuring that the battery pack 41 has sufficient power reserves to meet the needs of long-term continuous operation.

[0034] In addition, the power supply unit 4 and the control handle 5 adopt a completely separate layout. The control handle 5 only undertakes the control function and is completely isolated from the power supply load, which significantly reduces the physical exertion of operators when holding the control handle for a long time. This reduces the accumulation of fatigue from the structural level and improves operating comfort and work efficiency.

[0035] In practical applications, operators can select the appropriate power supply unit 4 installation method according to factors such as the space conditions of the work scene and the battery life requirements, and control the start-up and shutdown of the equipment and the working status through the control handle 5; when the battery pack 41 needs to be replaced, the replacement can be completed quickly with the help of the pluggable structure, without complicated operation procedures, further improving the ease of use of the equipment and the continuity of operation.

[0036] Finally, it should be noted that the above-mentioned new energy hydraulic lifting equipment includes horizontal hydraulic jacks, and can also be widely adapted to undercarriage handling machines, cranes, gearbox jacks, truck jacks, bottle jacks, presses, lifting bridges, engine mounts, and composite equipment formed by combining the above-mentioned equipment. The application scenarios of this equipment are not limited to the above-listed situations.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new energy hydraulic lifting device, comprising a device main body, a driving component, a lifting arm and a power supply unit; the driving component and the lifting arm are both assembled on the device main body; the driving component is powered by the power supply unit and cooperatively provides power for the lifting arm, characterized in that, The power supply unit is managed by a battery management system, and is composed of N battery packs and a battery mounting compartment, N≥1; the battery mounting compartment is arranged based on the equipment body, and is used for fitting the battery packs.

2. The new energy hydraulic lifting device according to claim 1, characterized in that, The driving component includes a hydraulic pump and a driving motor in transmission connection with the hydraulic pump; the driving motor is in electrical connection with the power supply unit, and is driven by the power supply unit to operate; The hydraulic pump outputs high-pressure hydraulic oil under the driving force of the driving motor, and the lifting arm can complete the lifting action.

3. The new energy hydraulic lifting device according to any one of claims 1-2, characterized in that, N=1, and the battery mounting compartment is fixedly installed on the side or rear of the equipment body.

4. The new energy hydraulic lifting device according to any one of claims 1-2, characterized in that, N≥2, and the battery mounting compartment can be selectively fixedly installed on the top, side, rear, front and bottom of the equipment body, forming a distributed mounting structure.

5. The new energy hydraulic lifting device according to claim 4, characterized in that, Each battery pack forms a power supply loop in a parallel manner, and the output end of each battery pack is connected with the bus of the power supply loop to supply power to the driving component.

6. The new energy hydraulic lifting device according to claim 5, characterized in that, The battery management system includes a general control switch module and an integrated control module; the integrated control module communicates with each battery pack through a CAN bus, and has control and protection functions; the integrated control module is in electrical connection with the power supply loop, and is used for uniformly managing and controlling all battery packs; when any one or more groups of battery packs fail, run out of power or need maintenance, the general control switch module separately cuts off the loop of the corresponding battery pack, and the remaining normal battery packs continue to supply power to maintain normal operation of the equipment.

7. The new energy hydraulic lifting device according to claim 6, characterized in that, Each group of battery packs is provided with an independent sub-battery management system; the sub-battery management system is used for real-time monitoring of voltage, current and temperature of the corresponding battery pack and preliminary circuit protection; the integrated control module and each sub-battery management system are in bidirectional communication connection through a CAN bus, realizing cooperative management and data aggregation of all battery packs.

8. The new energy hydraulic lifting device according to claim 6, characterized in that, The sub-battery management system is provided with a fault diagnosis unit and an active balancing unit; the fault diagnosis unit is used for real-time detection of consistency of internal single cells of the corresponding battery pack, on-off state of the charging and discharging loop and insulation performance; when the voltage difference of the single cells is detected to be more than 50mV, the loop is short-circuited / broken or the insulation resistance is lower than 1MΩ, the charging and discharging loop of the battery pack is immediately cut off; during the charging and discharging process of the battery pack, the active balancing unit adjusts the voltage level of each single cell in real time, and controls the voltage deviation within ±30mV.

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