High-voltage control module and loader

Abstract

The utility model provides a high-voltage control module and a loader, the high-voltage control module is applied to the loader, and the loader comprises a battery assembly, a handle assembly and a motor assembly; the high-voltage control module is integrally provided with a battery management circuit, a heat management circuit and an all-in-one control circuit; the battery management circuit is connected with the battery assembly, the all-in-one control circuit is connected with the battery assembly, the motor assembly and the handle assembly, and the all-in-one control circuit is used for obtaining state information of the handle assembly and controlling the motor assembly to act based on the state information. The high-voltage control module can control a plurality of execution units to act based on the integrated control unit, does not need to communicate and interact with an additional control unit, reduces the arrangement of wire harnesses, saves a certain manufacturing cost, and avoids the problem that the number of the wire harnesses is large when the plurality of control units interact with each other through the wire harnesses, thereby reducing the production cost. And therefore, the troubleshooting difficulty of the whole machine is simplified.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and more particularly, to a high-voltage control module and a loader. Background Art

[0002] Loaders are widely used in various engineering fields as core machinery for loading and transportation. Loaders are usually equipped with an electronic control system to control the loader. The electronic control system of related technologies is usually equipped with multiple independent control units, and each control unit controls the actions of different execution units.

[0003] However, when the electronic control system is provided with multiple independent control units, the multiple control units need to be connected through wiring harnesses to realize information exchange. In this way, there are many wiring harnesses, the cost of the whole machine is high, and troubleshooting is more difficult. Utility Model Content

[0004] To solve the above problems, the present application provides a high-voltage control module and a loader, which aim to solve the problem that when the high-voltage control module is provided with multiple control units, there are many connecting wiring harnesses between the multiple control units, the cost of the whole machine is high, and troubleshooting is difficult.

[0005] In the first aspect, the present application provides a high-voltage control module, which is applied to a loader, and the loader includes a battery assembly, a handle assembly and a motor assembly; the high-voltage control module is integrated with a battery management circuit, a thermal management circuit and an all-in-one control circuit; the battery management circuit is connected to the battery assembly, and the all-in-one control circuit is connected to the battery assembly, the motor assembly and the handle assembly, and the all-in-one control circuit is used to obtain status information of the handle assembly and control the action of the motor assembly based on the status information.

[0006] The battery management circuit, thermal management circuit, and all-in-one control circuit in the high-voltage control module provided by the embodiment of the present application are encapsulated in the same high-voltage control module, so that the high-voltage control module can simultaneously control the actions of multiple execution units based on multiple control units without the need to communicate and interact with additional control units, nor does it need to set up additional control circuits or control chips, which reduces the layout of the wiring harness, thereby avoiding the problem of a large number of wiring harnesses when multiple control units use wiring harnesses to interact, which makes troubleshooting more difficult, simplifies the troubleshooting difficulty of the entire machine, and saves a certain amount of production cost. At the same time, the high-voltage control module does not need to communicate and interact with additional control units, and also avoids the problem of network congestion and partial signal loss when multiple control units interact, thereby improving the control reliability of the high-voltage control module. Secondly, the present application connects multiple execution units through one high-voltage control module, so that the ports of the high-voltage control module are fully utilized, avoiding the problem of surplus effective ports of the high-voltage control module, resulting in the high-voltage control module not being fully utilized and wasting the port resources of the high-voltage control module, and can reduce the amount of code during software development.

[0007] In one possible design, the loader also includes an on-board diagnostic module, and the high-voltage control module is provided with a first communication network, a second communication network, a third communication network and a fourth communication network; the on-board diagnostic module is communicatively connected to the high-voltage control module through the first communication network, the second communication network, the third communication network and the fourth communication network, and the battery assembly is communicatively connected to the high-voltage control module and the on-board diagnostic module through the first communication network.

[0008] In one possible design, the battery assembly includes a high-voltage battery and a low-voltage battery; the all-in-one control circuit includes: a DC-DC converter, which is connected to the high-voltage battery and the low-voltage battery; an on-board charger, which is used to connect to external AC power and convert the AC power into DC power and output it to the high-voltage battery; and a high-voltage distribution box, which is connected to the high-voltage battery.

[0009] In one possible design, the high-voltage control module also includes a voltage detection circuit, which is connected to the low-voltage battery. The voltage detection circuit is used to detect the battery voltage of the low-voltage battery. When the battery voltage is lower than the threshold voltage, the DC-DC converter outputs low voltage electricity to the low-voltage battery.

[0010] In one possible design, the high-voltage control module also includes: a temperature detection circuit, which is connected to the high-voltage battery. The temperature detection circuit is used to detect the battery temperature of the high-voltage battery. When the battery temperature is higher than the threshold temperature, the thermal management circuit is used to control the high-voltage battery to dissipate heat.

[0011] In one possible design, the loader also includes a working device; the high-voltage control module also includes: an in-position detection circuit, which is used to detect the in-position information of the working device and send it to the all-in-one control circuit, and the all-in-one control circuit is also used to adjust the torque of the motor assembly based on the position information.

[0012] In a second aspect, the present application provides a loader, comprising a high-voltage control module as described in any optional manner in the first aspect; a battery assembly, the battery assembly being connected to the high-voltage control module; a handle assembly, the handle assembly being connected to the high-voltage control module, the handle assembly comprising at least a shift handle and a hydraulic handle; and a motor assembly, the motor assembly being connected to the high-voltage control module, the motor assembly comprising at least a travel motor and a hydraulic motor.

[0013] In a possible design, the loader further includes a main control module, which is connected to the high-voltage control module.

[0014] In a possible design, the loader further includes a wake-up module, which is connected to the high-voltage control module and is configured to send a wake-up signal to the high-voltage control module to enable the high-voltage control module to operate.

[0015] In one possible design, the loader also includes an air-conditioning component, which is connected to a high-voltage control module. The high-voltage control module is also used to obtain a working signal of the air-conditioning component and switch the working mode of the air-conditioning component based on the working signal; wherein the working mode of the air-conditioning component includes a cooling mode and a heating mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the module structure of a loader provided in an embodiment of the present application;

[0017] Figure 2 This is a schematic diagram of the module structure of another loader provided in an embodiment of the present application;

[0018] Figure 3 This is a schematic diagram of the module structure of another loader provided in an embodiment of the present application;

[0019] Figure 4 This is a schematic diagram of the module structure of another loader provided in an embodiment of the present application;

[0020] Figure 5 This is a schematic diagram of the module structure of another loader provided in an embodiment of the present application;

[0021] Figure 6 This is a schematic diagram of the module structure of another loader provided in an embodiment of the present application;

[0022] Figure 7This is a schematic diagram of the module structure of another loader provided in an embodiment of the present application;

[0023] Figure 8 This is a schematic diagram of the module structure of another loader provided in an embodiment of the present application;

[0024] Figure 9 This is a schematic diagram of the module structure of another loader provided in an embodiment of the present application.

[0025] Among them, the reference numerals in the figures are:

[0026] 1. Loader; 11. Battery assembly; 111. High-voltage battery; 112. Low-voltage battery; 12. Handle assembly; 121. Shift handle; 122. Hydraulic handle; 13. Motor assembly; 131. Hydraulic motor; 132. Travel motor; 14. High-voltage control module; 141. Battery management circuit; 142. Thermal management circuit; 143. All-in-one control circuit; 1431. DC-DC converter; 1432. On-board charger; 1433. High-voltage distribution box; 144. In-position detection circuit; 145. Voltage detection circuit; 146. Temperature detection circuit; 15. Main control module; 16. Wake-up module; 17. Human-machine display interface; 18. Air conditioning assembly; 19. On-board diagnostic module; 20. Telematics box; CCAN, first communication network; PCAN, second communication network; WCAN, third communication network; TCAN, fourth communication network. DETAILED DESCRIPTION

[0027] In the following description, specific details such as specific system structures and technologies are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, and circuits are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0028] As the core machinery for loading and transporting goods, loaders are widely used in various engineering fields, such as construction sites, earthwork operations, and mines. In order to control and troubleshoot the loaders, loaders are usually equipped with electronic control systems. The electronic control systems of related technologies are usually equipped with multiple different control units, such as the battery management system (BMS) that switches and controls the charge and discharge status of the battery components in the loader, the thermal management system (TMS), the multi-function output unit (MFU) that serves as the power output of the loader, the transmission control unit (TCU), the vehicle control unit (VCU), and the advanced temperature system air conditioning controller (ATS). BMS, TMS, MFU, TCU, VCU, and ATS are all used to control the actions of different execution units in the loader to achieve different functions.

[0029] However, when the electronic control system is provided with multiple control units, each control unit is only connected to the corresponding execution unit, resulting in a surplus of effective ports of each control unit, that is, the control units in the electronic control system are not fully utilized, resulting in a problem of port resource waste. At the same time, multiple control units need to be interconnected (for example, BMS, TMS, all-in-one output unit, TCU, ATS all need to be connected to VCU) to realize information exchange. When multiple control units use bus signals to interact with each other, there may be network congestion, resulting in the loss of some signals, affecting the control reliability of the electronic control system; when multiple control units use hard-wired signals (i.e., using wiring harnesses) to interact with each other, due to the harsh on-site environment and complex working conditions in some engineering fields, there may be wiring harness failures (such as aging, damage) and other problems that lead to signal interruption, affecting the normal communication between the control units, and thus causing loader failure using the electronic control system. The more control units there are, the higher the probability of communication failure. When multiple control units use wiring harnesses to interact, the number of wiring harnesses is large and the cost of the entire machine is high. Secondly, when a wiring harness fails, the operator needs to check the wiring harnesses one by one, and the amount of checking is large, making troubleshooting more difficult.

[0030] To this end, the present application provides a high-voltage control module and a loader, which can control the actions of multiple execution units based on an integrated control unit without the need for communication and interaction with additional control units, reducing the layout of wiring harnesses, saving certain production costs, and avoiding the problem of a large number of wiring harnesses causing greater difficulty in troubleshooting when multiple control units use wiring harnesses for interaction, thereby simplifying the troubleshooting difficulty of the entire machine.

[0031] The high-voltage control module and loader provided in this application are exemplarily introduced below with reference to the accompanying drawings.

[0032] like Figure 1 As shown, an embodiment of the present application provides a loader 1, which includes a battery assembly 11, a handle assembly 12 and a motor assembly 13. In order to realize information interaction and control of the battery assembly 11, the handle assembly 12 and the motor assembly 13, the loader 1 provided by the present application also includes a high-voltage control module 14. The high-voltage control module 14 is connected to the battery assembly 11, the handle assembly 12 and the motor assembly 13. The high-voltage control module 14 can obtain status information of the handle assembly 12 and control the motor assembly 13. At the same time, the high-voltage control module 14 can also control the charging and discharging of the battery assembly 11.

[0033] In one example, if Figure 2 As shown, the high-voltage control module 14 is integrated with a battery management circuit 141, a thermal management circuit 142, and an all-in-one control circuit 143. The battery management circuit 141 is connected to the battery assembly 11, and the all-in-one control circuit 143 is connected to the battery assembly 11, the handle assembly 12, and the motor assembly 13. The all-in-one control circuit 143 is used to obtain status information of the handle assembly 12 and control the operation of the motor assembly 13 based on the status information. Among them, the battery management circuit 141 is a BMS, and the thermal management circuit 142 is a TMS.

[0034] It is worth noting here that the status information is the status information generated in real time when the handle assembly 12 changes. When the user operates the handle assembly 12 (that is, the status of the handle assembly 12 changes), the all-in-one control circuit 143 can obtain the status information corresponding to the handle assembly 12 at this time, and control the action of the motor assembly 13 based on the status information.

[0035] In this example, the battery management circuit 141, the thermal management circuit 142 and the all-in-one control circuit 143 are encapsulated in the same high-voltage control module 14, that is, the high-voltage control module 14 is integrated with multiple control units, so that the high-voltage control module 14 can realize the control of the battery assembly 11, the handle assembly 12 and the motor assembly 13 based on multiple control units, that is, the high-voltage control module 14 as a whole can control the actions of multiple execution units at the same time, without the need to communicate and interact with additional control units, and without the need to set up additional control circuits or control chips, thereby reducing the layout of the wiring harness, thereby avoiding the problem of a large number of wiring harnesses when multiple control units use wiring harnesses to interact, resulting in greater difficulty in troubleshooting, simplifying the troubleshooting difficulty of the entire machine, and saving a certain amount of production costs. At the same time, the high-voltage control module 14 does not need to communicate and interact with additional control units, and also avoids the problem of network congestion that may occur when multiple control units interact, resulting in partial signal loss, so as to improve the control reliability of the high-voltage control module 14.

[0036] Secondly, the present application connects a high-voltage control module 14 with multiple execution units, so that the ports of the high-voltage control module 14 are fully utilized, avoiding the problem of surplus effective ports of the high-voltage control module 14, resulting in the high-voltage control module 14 not being fully utilized and wasting the port resources of the high-voltage control module 14, and can reduce the amount of code during software development.

[0037] In one example, Figure 3 As shown, the handle assembly 12 includes at least a shift handle 121 and a hydraulic handle 122. The shift handle 121 can be used to switch forward, backward and different gears, and the hydraulic handle 122 can be used to move the bucket, boom and other components. The handle assembly 12 can also include other handles, and this application does not impose specific restrictions on this. The motor assembly 13 includes at least a hydraulic motor 131 and a travel motor 132. Among them, the shift handle 121, the hydraulic handle 122, the hydraulic motor 131 and the travel motor 132 are respectively connected to the high-pressure control module 14. Further, the shift handle 121, the hydraulic handle 122, the hydraulic motor 131 and the travel motor 132 are respectively connected to the all-in-one control circuit 143 in the high-pressure control module 14.

[0038] In this example, the all-in-one control circuit 143 in the high-voltage control module 14 provided in this application is connected to multiple handles and motors, so that the ports of the high-voltage control module 14 are fully utilized, avoiding the problem of surplus effective ports of the high-voltage control module 14, resulting in the high-voltage control module 14 not being fully utilized, and the port resources of the high-voltage control module 14, and can reduce the amount of code during software development.

[0039] Here, it can be understood that the status information of the above-mentioned handle assembly 12 may include the shift signal of the shift handle 121 and the signal of the hydraulic handle 122. The all-in-one control circuit 143 can receive status information from the shift handle 121 and the hydraulic handle 122, and control the corresponding actions of the hydraulic motor 131 and the travel motor 132 based on these status information.

[0040] For example, when the operator switches the shift handle 121 to neutral (N) gear, the shift handle 121 will send a corresponding shift signal to the high-voltage control module 14. When the high-voltage control module 14 receives the shift signal, the battery management circuit 141 in the high-voltage control module 14 will send a high-voltage instruction to the all-in-one control circuit 143, so that the all-in-one control circuit 143 enters the working state. When the shift handle 121 is switched to neutral gear, the shift signal received by the all-in-one control circuit 143 indicates neutral gear. At this time, the travel motor 132 does not need to move, and the all-in-one control circuit 143 does not send instructions to the travel motor 132, and the loader 1 remains stationary.

[0041] When the operator switches the shift handle 121 to the forward (F) gear, the shift handle 121 sends a shift signal indicating the forward gear to the high-voltage control module 14. The all-in-one control circuit 143 in the high-voltage control module 14 then issues a forward command to the travel motor 132, causing the loader 1 to begin moving forward. At this point, to ensure normal movement of the loader 1, the operator steps on the accelerator pedal. The high-voltage control module 14 is also connected to the accelerator pedal to receive the stepping signal from the accelerator pedal. Based on the stepping signal, the high-voltage control module 14 determines the throttle opening of the accelerator pedal and adjusts the rotation speed of the travel motor 132 based on the throttle opening to change the travel speed of the loader 1.

[0042] When the operator switches the shift handle 121 to reverse (F), the shift handle 121 sends a reverse shift signal to the high-voltage control module 14. The all-in-one control circuit 143 in the high-voltage control module 14 then sends a reverse command to the travel motor 132, causing the loader 1 to begin reverse movement. At this point, the operator also steps on the accelerator pedal to ensure normal movement of the loader 1. This will not be further described.

[0043] In order to achieve braking of the loader 1, a brake pedal is also provided in the loader 1. When the loader 1 is in neutral, forward gear or reverse gear, if the operator steps on the brake pedal, the brake pedal will send a corresponding stepping signal to the high-pressure control module 14. The high-pressure control module 14 will clear the torque of the travel motor 132 based on the stepping signal, and at the same time control the hydraulic valve block to slow down or stop the loader 1 completely.

[0044] In summary, the high-voltage control module 14 can receive shift signals from the shift handle 121, accelerator pedal signals, and brake pedal signals, and change the operating state of the loader 1 based on the shift signals. It can also adjust the rotational speed and torque of the travel motor 132 based on the pedal signals, thereby accelerating or decelerating the loader 1. In this way, the operating state and travel speed of the loader 1 can be controlled and adjusted by the all-in-one control circuit 143 in the high-voltage control module 14. That is, the all-in-one control circuit 143 can simultaneously control multiple execution units, eliminating the need for an additional control unit.

[0045] In one example, the loader 1 further includes a working device, which may be a bucket, boom, and rocker arm of the loader 1. In this example, when the loader 1 is in neutral, forward, or reverse gear, if the working state of the working device of the loader 1 needs to be changed, the operator can do so by operating the hydraulic handle 122. For example, when the operator switches the hydraulic handle 122 to the lifting state, the hydraulic handle 122 sends a lifting signal to the high-pressure control module 14. The high-pressure control module 14 can control the hydraulic motor 131 based on the lifting signal to lift the working device of the loader 1. The all-in-one control circuit 143 can determine the opening of the hydraulic handle 122 based on the lifting signal to determine the rotation speed of the hydraulic motor 131, thereby determining the lifting speed of the working device. When the working device is lifted into place, the high-pressure control module 14 can also clear the torque of the hydraulic motor 131 so that the working device can remain in the lifted state.

[0046] When the operator switches the hydraulic handle 122 to the lowering state, the hydraulic handle 122 sends a lowering signal to the high-pressure control module 14. Based on the lowering signal, the high-pressure control module 14 controls the hydraulic motor 131 to move in the opposite direction, thereby lowering the working device of the loader 1. The all-in-one control circuit 143 determines the opening of the hydraulic handle 122 based on the lowering signal to determine the rotation speed of the hydraulic motor 131, thereby determining the lowering speed of the working device. When the working device is lowered into position, the high-pressure control module 14 also clears the torque of the hydraulic motor 131 to keep the working device in a low and flat position.

[0047] Optionally, a lifting handle may be further provided in the handle assembly 12 of the loader 1. The function of the lifting handle is the same as the function and control logic of the hydraulic handle 122. Therefore, the lifting handle may refer to the function and control logic of the hydraulic handle 122, which will not be described in detail. The loader 1 may be provided with only the hydraulic handle 122 or only the lifting handle, or both the hydraulic handle 122 and the lifting handle. The specific setting may be based on actual needs. For example, assuming that the loader 1 is a small loader and the operating platform of the loader 1 is small, only the hydraulic handle 122 or the lifting handle may be provided on the operating platform. When the loader 1 is a large loader, the operating platform of the loader 1 is larger, and there may even be two operating platforms. In order to facilitate the operation of the operator, the hydraulic handle 122 and the lifting handle need to be provided at different positions on the larger platform or on the two operating platforms, respectively, so as to facilitate the operation of the operator. This application does not impose any specific restrictions on this.

[0048] In summary, the high-pressure control module 14 can receive the lifting signal and the lowering signal from the hydraulic handle 112, and control the hydraulic motor 131 to change the action state of the working device of the loader 1 accordingly based on the lifting signal and the lowering signal. At the same time, the all-in-one control circuit 143 can also adjust the rotation speed and torque of the hydraulic motor 131 according to the lifting signal and the lowering signal, thereby adjusting the lifting and lowering speed of the working device accordingly. In this way, the high-pressure control module 14 provided by the present application can control and adjust the overall action state and travel speed of the loader 1, the action state and the lifting / lowering speed of the working device of the loader 1, that is, the high-pressure control module 14 provided by the present application can control multiple execution units at the same time without the need for communication and interaction with additional control units, and without the need for setting up additional control circuits or control chips, thereby reducing the layout of the wiring harness, thereby avoiding the problem of a large number of wiring harnesses when multiple control units use wiring harnesses to communicate with each other, resulting in greater difficulty in troubleshooting, simplifying the troubleshooting difficulty of the entire machine, and saving a certain amount of manufacturing cost. At the same time, the high-voltage control module 14 does not need to communicate and interact with additional control units, and avoids the problem of network congestion and partial signal loss when the high-voltage control module 14 and the additional control units use bus signals to interact. The deeply integrated high-voltage control module 14 improves the signal transmission reliability, thereby ensuring the operation reliability of the loader 1.

[0049] In order to enable the high pressure control module 14 to adjust the torque of the hydraulic motor 131 when the working device is lifted or lowered into place, in one example, Figure 4As shown, the high-voltage control module 14 also includes a position detection circuit 144, which is used to detect the position information of the working device and send it to the all-in-one control circuit 143. The all-in-one control circuit 143 can also adjust the torque of the motor assembly 13 (i.e., the hydraulic motor 131) based on the position information to correspondingly adjust the operating state of the loader 1 and the working device. For example, when the working device is lifted into position, the position detection circuit 144 detects the position information that the working device has been lifted into position and sends it to the all-in-one control circuit 143, so that the all-in-one control circuit 143 can clear the torque of the hydraulic motor 131 based on the position information to keep the working device in the lifted state; when the working device is lowered into position, the position detection circuit 144 detects the position information that the working device has been lowered into position and sends it to the all-in-one control circuit 143, so that the all-in-one control circuit 143 can clear the torque of the hydraulic motor 131 based on the position information to keep the working device in the low and flat state.

[0050] In one example, if Figure 5 As shown, the loader 1 provided in this application may also include a main control module 15, which is connected to the high-voltage control module 14. The main control module 15 is an MCU, which can obtain other vehicle information of the loader 1 and communicate with the high-voltage control module 14.

[0051] In one example, if Figure 6 As shown, the battery assembly 11 provided in this application includes a high-voltage battery 111 and a low-voltage battery 112. The low-voltage battery 112 is connected to the low-voltage system in the loader 1. The all-in-one control circuit 143 includes a DC-DC converter 1431, an on-board charger 1432 and a high-voltage distribution box 1433.

[0052] The DC-DC converter 1431 is connected to the high-voltage battery 111 and the low-voltage battery 112 . The DC-DC converter 1431 is used to convert the high-voltage DC power of the high-voltage battery 111 into low-voltage DC power for use by the low-voltage system of the loader 1 .

[0053] When the high-voltage battery 111 needs to be charged, the on-board charger 1432 will be connected to an external AC power source (for example, a charging gun), and the on-board charger 1432 will convert the AC power into DC power and output it to the high-voltage battery 111. At this time, the high-voltage control module 14 is connected to the charging gun to receive the charging signal from the charging gun and activate it. The pre-charge relay in the battery management circuit 141 in the high-voltage control module 14 is energized, putting the loader 1 in a charging state. When charging is complete, the domain controller in the battery management circuit 141 will issue a disconnect command to disconnect the gun. The battery management circuit 141 and the on-board charger 1432 ensure reliable charging and disconnection.

[0054] The high-voltage distribution box 1433 is connected to the high-voltage battery 111 and the high-voltage system in the loader 1, and is responsible for managing and distributing the high-voltage electricity of the high-voltage battery 111 to ensure safe transmission and distribution of electricity.

[0055] Among them, the on-board charger 1432 is an on-board charger (OBC), and the high-voltage distribution box 1433 is a high-voltage distribution box (HVDU) or a high-voltage junction box (HVJB). The principles of OBC, HVDU, and HVJB are well-known technologies in the field and will not be elaborated in this application.

[0056] In one example, if Figure 7 As shown, the high-voltage control module 14 also includes a voltage detection circuit 145, which is connected to the low-voltage battery 112. The voltage detection circuit 145 is used to detect the battery voltage of the low-voltage battery 112. When the battery voltage is lower than the threshold voltage (for example, 24V), the DC-DC converter 1431 outputs low voltage electricity to the low-voltage battery 112, so that the low-voltage battery 112 can reliably power the low-voltage system in the loader 1, thereby improving the operating reliability of the low-voltage system in the loader 1.

[0057] The high-voltage battery 111 generates a lot of heat when it is working. In order to avoid the high-voltage battery 111 power supply abnormality caused by the high-voltage battery 111 being overheated, or even the risk of the high-voltage battery 111 being burned by high temperature, in one example, Figure 7 As shown, the high-voltage control module also includes a temperature detection circuit 146, which is connected to the high-voltage battery 111. The temperature detection circuit 146 is used to detect the battery temperature of the high-voltage battery 111. When the battery temperature is higher than the threshold temperature, the thermal management circuit 142 is used to control the high-voltage battery 111 to dissipate heat.

[0058] In this example, the temperature detection circuit 146 can detect the battery temperature of the high-voltage battery 111 in real time. When it is detected that the current battery temperature of the high-voltage battery 111 is higher than the threshold temperature, it indicates that the temperature of the high-voltage battery 111 is too high and the high-voltage battery 111 needs to be cooled. At this time, the thermal management circuit 142 in the high-voltage control module 14 will control the high-voltage battery 111 to dissipate heat. Specifically, the thermal management circuit 142 is connected to the high-voltage battery pack cooling device in the high-voltage battery 111. The thermal management circuit 142 can control the circulation of cooling water in the cooling device to dissipate heat from the high-voltage battery 111, thereby achieving the purpose of cooling and ensuring the power supply reliability of the high-voltage battery 111. It is worth noting here that the temperature detection circuit 146 will detect the battery temperature of the high-voltage battery 111 in real time. When it is detected that the battery temperature after heat dissipation is lower than the threshold temperature, the thermal management circuit 142 stops controlling the circulation of cooling water in the cooling device to achieve the purpose of energy saving. That is, the thermal management circuit 142 in this application will only control the cooling water circulation in the cooling device when the battery temperature of the high-voltage battery 111 is higher than the threshold temperature, thereby cooling the high-voltage battery 111. When the battery temperature of the high-voltage battery 111 is lower than the threshold temperature, the cooling water circulation in the cooling device will be stopped to achieve the purpose of energy saving.

[0059] In one example, if Figure 8 As shown, the loader 1 further includes a wake-up module 16 , which is connected to the high-voltage control module 14 . The wake-up module 16 is configured to send a wake-up signal to the high-voltage control module 14 to enable the high-voltage control module 14 to operate.

[0060] Optionally, the wake-up module 143 can be a key switch. When the loader 1 needs to start running, the operator can switch the key switch to the ON state. The key switch will send a wake-up signal to the high-voltage control module 14. After the high-voltage control module 14 is awakened, the high-voltage control module 14 starts bus communication with the battery assembly 11, handle assembly 12, motor assembly 13 in the loader 1 and other control units (such as MCU, TCU) in the loader 1. The battery assembly 11 of the loader 1 will provide power to the high-voltage control module 14 to enable the high-voltage control module 14 to operate normally. When the loader 1 needs to stop running, the operator can switch the key switch to the OFF state. The key switch can send a shutdown signal to the high-voltage control module 14, or it can not send a wake-up signal to shut down the high-voltage control module 14. There is no specific limitation on this.

[0061] In one example, if Figure 8As shown, a human-machine display interface 17 can be provided in the loader 1. The human-machine display interface 17 is communicated with the high-voltage control module 14. After the high-voltage control module 14 receives information from the high-voltage control module 14, the information will be sent to the human-machine display interface 17 for display, so that the operator can monitor the vehicle information of the loader 1 in real time through the human-machine display interface 17 to determine whether the loader 1 can operate normally.

[0062] Optionally, the human-machine display interface 17 can be an HMI (Human-Machine Interface). The HMI can display information and includes at least a speedometer (displaying the driving speed of the loader 1), a tachometer (displaying the speed of the engine in the loader 1), a speedometer (displaying the driving speed of the loader 1), a fuel meter (displaying the remaining fuel amount of the loader 1), a temperature meter (displaying the engine coolant temperature in the loader 1), an oil pressure gauge (displaying the engine oil pressure in the loader 1), a fault indicator light (displaying various fault codes and warning messages), a status display table (such as the action status of working devices such as the bucket, boom and rocker arm), etc.

[0063] In one example, if Figure 8 As shown, the loader 1 may further include an air-conditioning component 18, which is connected to the high-voltage control module 14. The high-voltage control module 14 is also used to obtain the working signal of the air-conditioning component 18 and switch the working mode of the air-conditioning component 18 based on the working signal, wherein the working mode of the air-conditioning component 18 includes a cooling mode and a heating mode.

[0064] In this example, the working signal is the status information generated in real time when the air-conditioning component 18 changes. When the user operates the air-conditioning component 18 (that is, the status of the air-conditioning component 18 changes), the high-voltage control module 14 can obtain the working signal corresponding to the air-conditioning component 18 at this time, and switch the working mode of the air-conditioning component 18 based on the working signal to make the air-conditioning component 18 cool or heat.

[0065] Exemplarily, the air conditioning assembly 18 may include an air conditioning panel, an air conditioning compressor, and a positive temperature coefficient thermistor (PTC). To start or switch the operating mode of the air conditioning assembly 18, the operator can select the corresponding operating mode on the air conditioning panel. When the operator selects cooling mode on the air conditioning panel, the air conditioning panel sends a cooling command to the high-voltage control module 14. Based on the cooling command, the all-in-one control circuit 143 in the high-voltage control module 14 controls the power output of the air conditioning compressor in the air conditioning assembly 18. This means that the compressor operates to operate the air conditioning assembly 18 in cooling mode, thereby cooling the loader 1. When the operator selects heating mode on the air conditioning panel, the air conditioning panel sends a heating command to the high-voltage control module 14. Based on the heating command, the all-in-one control circuit 143 in the high-voltage control module 14 controls the power output of the PTC. This means that the PTC operates to operate the air conditioning assembly 18 in heating mode, thereby heating the loader 1. The specific structure of the air conditioning assembly 18 can be configured according to actual needs and is not specifically limited in this application.

[0066] In one example, if Figure 9 As shown, the loader 1 also includes an on-board diagnostic module 19, which is an on-board diagnostic system (OBD). The OBD can monitor and report the operating status and fault information of the loader 1. Figure 9 As shown, the high-voltage control module 14 is provided with a first communication network CCAN, a second communication network PCAN, a third communication network WCAN and a fourth communication network TCAN. The on-board diagnostic module 19 is communicatively connected to the high-voltage control module 14 through the first communication network CCAN, the second communication network PCAN, the third communication network WCAN and the fourth communication network TCAN. The battery assembly 11 is communicatively connected to the high-voltage control module 14 and the on-board diagnostic module 19 through the first communication network CCAN.

[0067] The first communication network CCAN serves as a charging controller area network (CAN), and is responsible for the charging information exchange of the loader 1 . The baud rate of the first communication network CCAN may be 500K (kilobaud).

[0068] The second communication network PCAN serves as the power CAN. The second communication network PCAN is responsible for the signal interaction between the high-voltage control module 14 and the high-voltage system in the loader 1, so as to grasp the corresponding information of the high-voltage battery 111, the charging pile, the all-in-one control circuit 143 and other modules / systems (such as water cooling unit, VCU, HMI, TCU, etc.) in real time, and promptly feedback it to the human-machine display interface 17 of the loader 1. The baud rate of the second communication network PCAN can be 500K.

[0069] The third communication network WCAN serves as the vehicle networking CAN (CAN interface) for remotely transmitting vehicle signals from the loader 1. Its baud rate can be 250 kHz. The fourth communication network TCAN serves as the vehicle debugging and fault diagnosis CAN interface. Its baud rate can also be 250 kHz. The high-voltage control module 14 communicates with the telematics box 20 in the loader 1 via the third and fourth communication networks WCAN and TCAN. The telematics box 20 is a telematics box (T-Box) that enables wireless communication between the loader 1 and external networks.

[0070] In this example, the communication needs of the entire loader 1 can be met through four different communication networks, and corresponding communication networks are set up based on different modules / units, so the communication reliability is high. Compared with the related art that requires communication connections between the battery management circuit 141, the thermal management circuit 142, the all-in-one control circuit 143 and other control units, and then the battery management circuit 141, the thermal management circuit 142, the all-in-one control circuit 143 and other control units control the corresponding execution units, this application can achieve communication connections with multiple execution units through a high-voltage control module 14, and there is no need for communication between the battery management circuit 141, the thermal management circuit 142, the all-in-one control circuit 143 and other control units, avoiding the problem of communication failure when the various control units communicate directly, reducing the vehicle failure rate of the loader 1, and thus improving the operational reliability of the loader 1. The high-voltage control module 14 can also set up other communication networks, and this application does not make specific restrictions on this.

[0071] In summary, the battery management circuit 141, the thermal management circuit 142 and the all-in-one control circuit 143 are encapsulated in the same high-voltage control module 14, that is, the high-voltage control module 14 is integrated with multiple control units, so that the high-voltage control module 14 can realize the control of the battery assembly 11, the handle assembly 12 and the motor assembly 13 based on multiple control units, that is, the high-voltage control module 14 as a whole can control the actions of multiple execution units at the same time, without the need to communicate and interact with additional control units, and without the need to set up additional control circuits or control chips, thereby reducing the layout of the wiring harness, thereby avoiding the problem of a large number of wiring harnesses when multiple control units use wiring harnesses to interact, resulting in greater difficulty in troubleshooting, simplifying the troubleshooting difficulty of the entire machine, and saving a certain amount of production costs. At the same time, the high-voltage control module 14 does not need to communicate and interact with additional control units, and also avoids the problem of network congestion that may occur when multiple control units interact, resulting in partial signal loss, so as to improve the control reliability of the high-voltage control module 14. Secondly, the present application connects a high-voltage control module 14 with multiple execution units, so that the ports of the high-voltage control module 14 are fully utilized, avoiding the problem of surplus effective ports of the high-voltage control module 14, resulting in the high-voltage control module 14 not being fully utilized and wasting the port resources of the high-voltage control module 14, and can reduce the amount of code during software development.

[0072] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0073] It will also be understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0074] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0075] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0076] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A high-voltage control module, characterized in that: Applicable to a loader, the loader includes a battery assembly, a handle assembly, and a motor assembly; the high-voltage control module is integrated with a battery management circuit, a thermal management circuit, and an all-in-one control circuit; The battery management circuit is connected to the battery assembly, and the all-in-one control circuit is connected to the battery assembly, the motor assembly and the handle assembly. The all-in-one control circuit is used to obtain status information of the handle assembly and control the action of the motor assembly based on the status information.

2. The high voltage control module according to claim 1, characterized in that: The loader further includes an on-board diagnostic module, and the high-voltage control module is provided with a first communication network, a second communication network, a third communication network, and a fourth communication network; The on-board diagnostic module is communicatively connected to the high-voltage control module through the first communication network, the second communication network, the third communication network and the fourth communication network, and the battery assembly is communicatively connected to the high-voltage control module and the on-board diagnostic module through the first communication network.

3. The high voltage control module according to claim 1, characterized in that: The battery assembly includes a high-voltage battery and a low-voltage battery; the all-in-one control circuit includes: a DC-DC converter, the DC-DC converter being connected to the high-voltage battery and the low-voltage battery; an on-board charger, the on-board charger being used to receive external AC power and convert the AC power into DC power for output to the high-voltage battery; and A high-voltage distribution box is connected to the high-voltage battery.

4. The high voltage control module according to claim 3, characterized in that: The high-voltage control module further includes: A voltage detection circuit is connected to the low-voltage battery, and the voltage detection circuit is used to detect the battery voltage of the low-voltage battery. When the battery voltage is lower than a threshold voltage, the DC-DC converter outputs low voltage electricity to the low-voltage battery.

5. The high voltage control module according to claim 3, characterized in that: The high-voltage control module further includes: A temperature detection circuit is connected to the high-voltage battery. The temperature detection circuit is used to detect the battery temperature of the high-voltage battery. When the battery temperature is higher than a threshold temperature, the thermal management circuit is used to control the high-voltage battery to dissipate heat.

6. The high-voltage control module according to any one of claims 1 to 5, characterized in that: The loader further includes a working device; the high-voltage control module further includes: An in-position detection circuit is used to detect the in-position information of the working device and send it to the all-in-one control circuit. The all-in-one control circuit is also used to adjust the torque of the motor assembly based on the position information.

7. A loader, characterized in that: include: The high-voltage control module according to any one of claims 1 to 6; a battery assembly connected to the high-voltage control module; a handle assembly connected to the high-pressure control module, the handle assembly comprising at least a shift handle and a hydraulic handle; and A motor assembly is connected to the high-voltage control module, and the motor assembly at least includes a travel motor and a hydraulic motor.

8. The loader according to claim 7, characterized in that: The loader also includes: A main control module is connected to the high-voltage control module.

9. The loader according to claim 7, characterized in that: The loader also includes: A wake-up module is connected to the high-voltage control module and is used to send a wake-up signal to the high-voltage control module to enable the high-voltage control module to operate.

10. The loader according to claim 7, characterized in that The loader also includes: an air conditioning component, the air conditioning component being connected to the high-voltage control module, the high-voltage control module being further configured to obtain a working signal of the air conditioning component and switch a working mode of the air conditioning component based on the working signal; Wherein, the working modes of the air-conditioning component include cooling mode and heating mode.

Images