Electrical system and new energy electric forklift

Abstract

The utility model relates to the technical field of vehicle control, and discloses an electrical system and a new energy electric forklift, and the electrical system comprises a vehicle operation system which is used for obtaining an operation signal of a driver to a vehicle; and the driving control assembly module integrates control functions of a plurality of controllers in advance, is connected with a vehicle operation system, and is used for receiving the operation signal and generating a control instruction according to the operation signal, so that a part corresponding to the operation signal executes actions according to the control instruction. According to the utility model, control functions of a plurality of controllers are integrated, so that the integration level of an electrical system can be improved, the space ratio can be reduced, the transmission path can be reduced, the cooperative work difficulty of different controllers can be reduced, the line connection among electric appliance parts can be simplified, and the maintenance convenience can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle control technical field, concretely relates to an electrical system and new energy electric fork truck. BACKGROUND

[0002] At present, in order to realize the control of various functions of vehicle, multiple electrical controllers are deployed in advance inside vehicle, taking new energy electric fork truck as an example, including: traction motor controller, oil pump motor controller, whole vehicle controller etc., under this electrical system architecture, control path load, the connection of wire, cable etc. between corresponding electrical components is complicated, multiple electrical components installation needs more space of vehicle, and when replacing damaged components, a normal electrical component may need to be disassembled first, and the maintenance convenience is reduced. SUMMARY

[0003] Therefore, the utility model provides an electrical system and new energy electric fork truck to solve the problems of complex line connection, space occupation and inconvenient maintenance of the existing electrical system.

[0004] In a first aspect, the utility model provides an electrical system, the system includes:

[0005] Vehicle operating system, used for obtaining the operation signal of driver to vehicle;

[0006] Drive control assembly module, pre-integrated control function of multiple controllers, connected with vehicle operating system, used for receiving operation signal and generating control instruction according to operation signal, so that the component corresponding to operation signal executes action according to control instruction.

[0007] The electrical system provided by the utility model obtains the operation signal of driver to vehicle through vehicle operating system, and the drive control assembly module pre-integrated control function of multiple controllers generates control instruction according to operation signal, so that the component corresponding to operation signal executes action according to control instruction. The utility model integrates the control function of multiple controllers, can improve the integration of electrical system, reduce the space ratio, reduce transmission path, reduce the difficulty of collaborative work of different controllers, simplify the line connection between electrical components, and improve the maintenance convenience.

[0008] In an alternative embodiment, the system further includes: instrument system, connected with drive control assembly module, used for displaying operation information generated based on operation signal;Light system, connected with drive control assembly module, used for displaying light information generated based on operation signal;Battery system, connected with drive control assembly module, used for providing power supply for drive control assembly module, and generating control command and first alarm signal according to fault information of battery system by drive control assembly module.

[0009] The utility model discloses a through instrument system and light system, can directly show the operation signal, and the driving state of current vehicle is mastered conveniently to operating personnel. In addition, through the direct connection of battery system and drive control assembly module, can provide power supply on the basis, directly according to power failure information control other electrical components, reduce information transmission path, improve reliability.

[0010] In an alternative embodiment, the control functions of the pre-integrated plurality of controllers include: a vehicle control function of a vehicle controller, a traction motor control function of a traction motor controller, and an oil pump motor control function of an oil pump motor controller; wherein the vehicle control function is to receive an operation signal and send the operation signal to the traction motor controller or the oil pump motor controller; the traction motor control function is to control the speed of the traction motor according to the operation signal; and the oil pump motor control function is to control the speed of the oil pump motor according to the operation signal.

[0011] The utility model discloses through the integration of vehicle control function, traction motor control function and oil pump motor control function, can fuse various control strategies together, and optimization is carried out to control strategy, reduces the transmission path of operation signal on the basis of completing original control function.

[0012] In an alternative embodiment, the drive control assembly module further includes: a power converter function for converting a first voltage power provided by the battery system into a second voltage power, providing the second voltage power for the drive control assembly module, the vehicle operation system, the instrument system, the light system, the battery system and other electrical components of the vehicle.

[0013] The utility model discloses through the integration of power converter function, can convert the power provided by the battery system into the low voltage power required by other electrical components, without external power converter, reduce the space ratio, further simplify the line connection between electrical components.

[0014] In an alternative embodiment, the drive control assembly module is connected to the positive and negative poles of the battery system through two power cables.

[0015] The utility model discloses through the integration of electrical system, can realize the line connection between battery system and drive control assembly module with two power cables, reduce the power cable connection, reduce the cost.

[0016] In an alternative embodiment, the drive control assembly module further includes: a fuse box function for overcurrent detection of the low-voltage current flowing into the drive control assembly module, the vehicle operation system, the instrument system, the light system and other electrical components of the vehicle, and cutting off the power supply when the low-voltage current exceeds a preset current threshold.

[0017] The utility model discloses a drive control assembly module is integrated with the function of fuse box, does not need the external fuse box, can further reduce the wiring harness connection, reduces the space ratio.

[0018] In an alternative embodiment, the drive control assembly module further comprises a fuse box alarm module for generating a second alarm signal when the fuse box function performs power cut-off and sending the alarm signal to the instrument system for display.

[0019] The utility model discloses an integrated fuse box alarm module, which can realize the alarm function, improve the intelligent degree of the electrical system, facilitate the technical personnel to troubleshoot in time, stop working before the fuse is damaged, prevent the further expansion of the fault, and improve the safety.

[0020] In an alternative embodiment, the fuse box function performs power cut-off based on a semiconductor.

[0021] The utility model discloses a semiconductor is arranged instead of the fuse, can avoid the cumbersome operation of replacing the fuse, reduces the service cost and material cost.

[0022] In an alternative embodiment, the first alarm signal and / or the second alarm signal is sent to the instrument system through a controller area network bus.

[0023] The utility model discloses a controller area network bus for fault reporting, which can improve the reliability, accuracy, flexibility and real-time performance of alarm data transmission, improve the intelligent degree of the electrical system, and avoid the further expansion of the fault.

[0024] In a second aspect, the utility model provides a new energy electric forklift, comprising the electrical system of the first aspect or any of its corresponding embodiments.

[0025] Because the new energy electric forklift includes the electrical system, it has the same effect as the electrical system, which will not be repeated here. ACCURACY

[0026] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0027] Figure 1 It is the structure block diagram of the electrical system according to the utility model embodiment;

[0028] Figure 2 It is the structure block diagram of the traditional electrical system according to the utility model embodiment.

[0029] Figure 3 is a structural block diagram of another conventional electrical system according to an embodiment of the present application;

[0030] Figure 4 is a structural block diagram of still another conventional electrical system according to an embodiment of the present application.

[0031] The label explanation: 100-vehicle operation system; 200-driving control assembly module; 300-instrument system; 400-light system; 500-battery system. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] The embodiments of the present application are applicable to the application scenario of integrated deployment of the electrical system of a vehicle, and take the electrical system of a new energy electric forklift as an example. The embodiments of the present application provide an electrical system, which integrates the control functions of multiple controllers to achieve the effects of simplifying the wiring harness connection of the electrical system, improving the maintainability, and reducing the cost.

[0034] According to the embodiments of the present application, an electrical system embodiment is provided. It should be noted that, as used in the following, the term "module" can be a combination of software and / or hardware that can achieve a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, hardware, or a combination of software and hardware implementations are also possible and are contemplated.

[0035] An electrical system is provided in the present embodiment, which can be deployed in the new energy electric forklift described above, Figure 1 is a structural block diagram of an electrical system according to an embodiment of the present application, as Figure 1 shown, the electrical system comprises:

[0036] A vehicle operation system 100 is configured to obtain an operation signal of a driver to the vehicle;

[0037] A driving control assembly module 200 is configured to integrate control functions of multiple controllers in advance, and is connected with the vehicle operation system 100. The driving control assembly module 200 is configured to receive the operation signal, and generate a control instruction according to the operation signal, so that a component corresponding to the operation signal performs an action according to the control instruction.

[0038] Specifically, in the embodiments of the utility model, the vehicle operation system 100 in the electrical system is used to collect the operation signal of the driver to the vehicle, such as gear control operation, throttle control operation, etc., and the controller generates control commands for corresponding components based on the operation signal, and controls the corresponding components to perform actions according to the control commands, so as to realize the control of the driver to the vehicle, such as forward / reverse, acceleration / deceleration, etc. Figure 2 、 Figure 3 and Figure 4 The electrical system of different structures of the traditional new energy electric forklift is different from the traditional electrical system. In the traditional electrical system, the final control of the vehicle is completed based on the cooperative work of multiple controllers. As shown in Figure 2 , the electrical system includes a vehicle controller, a traction motor and oil pump motor electric control two-in-one, and two-in-one means that the motor and the related motor controller are integrated in one module; as shown in Figure 3 , the electrical system includes a traction motor, a traction motor controller, an oil pump motor, and an oil pump motor controller; as shown in Figure 3 , the electrical system includes a vehicle controller, a traction motor, a traction motor controller, an oil pump motor, and an oil pump motor controller.

[0039] In some optional embodiments, the embodiments of the utility model integrate the control functions corresponding to the whole vehicle controller, the traction motor controller and the oil pump motor controller in the traditional new energy electric forklift electrical system in the drive control assembly module 200, when developing the drive control assembly module 200, the path optimization of the control strategy is carried out based on the whole vehicle control function, the traction motor control function and the oil pump motor control function corresponding to each controller, the transmission path of the operation signal between different controllers is optimized on the basis of the original control function, and is completed in the drive control assembly module 200. Specifically, the drive control assembly module 200 integrates the controller, motor function, can convert the operation signal of the driver through the vehicle operation system into the control command of vehicle operation, and issues the speed instruction to the motor. When the driver puts the gear position in the forward gear and steps on the accelerator pedal, the drive control assembly module can convert the forward gear signal input by the vehicle operation system, the accelerator pedal analog signal into the control command of vehicle operation, and then issues the speed instruction to the traction motor. And according to the voltage of the accelerator pedal analog signal, different speed requirements are issued to the traction motor according to the control strategy, so as to control the speed of the traction motor, so as to control the acceleration and deceleration of the vehicle. Similarly, the signal instruction of the driver control door frame operating rod can also be converted into the oil pump motor control instruction to control the speed of the oil pump motor, so as to control the lifting speed of the door frame. The utility model integrates the whole vehicle control function, the traction motor control function and the oil pump motor control function, can fuse various control strategies together, optimizes the control strategy, reduces the transmission path of the operation signal on the basis of completing the original control function.

[0040] Therefore, the control path in the electrical system of the embodiments of the utility model is more concise than that of other traditional electrical systems (but the specific control strategy is the same, that is, the internal algorithm of the program is consistent), taking the control of vehicle driving function as an example for description:

[0041] ①The control path in the electrical system provided by the embodiments of the utility model: the vehicle operation system inputs the related signal (such as vehicle forward or backward signal, accelerator pedal depth signal, etc.) to the drive control assembly module, and directly drives the vehicle to drive according to the input signal information through the internal algorithm of the program;

[0042] ②For example, Figure 2The control path in the electrical system shown in the figure: the vehicle operating system input related signals (such as vehicle forward or reverse signal, accelerator pedal depth signal, etc.) are given to the vehicle controller, and the motor target speed output by the internal control algorithm of the vehicle controller is given to the traction control (the controller in the traction motor and electric pump control two-in-one) and the oil pump control (the controller in the oil pump motor and electric pump control two-in-one), and then the traction control and the oil pump control drive the traction motor (the traction motor control in the traction motor and electric pump control two-in-one) and the oil pump motor (the oil pump motor control in the oil pump motor and electric pump control two-in-one) to work according to the internal algorithm.

[0043] ③As shown in the electrical system shown in the figure: Figure 3 The control path in the electrical system shown in the figure: the vehicle operating system input related signals (such as vehicle forward or reverse signal, accelerator pedal depth signal, etc.) are given to the traction controller, and the traction controller drives the traction motor to work according to the internal algorithm. At the same time, the oil pump motor idle speed command is given to the oil pump control through CAN communication, and the oil pump control controls the oil pump motor to work according to the idle speed instruction through the internal algorithm.

[0044] ④As shown in the electrical system shown in the figure: Figure 4 The control path in the electrical system shown in the figure: the vehicle operating system input related signals (such as vehicle forward or reverse signal, accelerator pedal depth signal, etc.) are given to the vehicle controller, and the motor target speed output by the internal control algorithm of the vehicle controller is given to the traction control and the oil pump control, and then the traction control and the oil pump control drive the traction motor and the oil pump motor to work according to the internal algorithm.

[0045] In some optional embodiments, as shown in the figure: Figure 1 The electrical system of the utility model embodiment further comprises: an instrument system 300 connected with the drive control assembly module 200, used for displaying operation information generated based on the operation signal, such as vehicle speed, steering information and the like displayed by the instrument system; and a light system 400 connected with the drive control assembly module 200, used for displaying light information generated based on the operation signal, such as a turn signal, a brake light and the like. The utility model can intuitively display the operation signal through the instrument system and the light system, and facilitate the operator to master the current vehicle driving state.

[0046] In some optional embodiments, the electrical system of this invention further includes a battery system 500, connected to the drive control assembly module 200, for providing power to the drive control assembly module 200, and for generating control commands and a first alarm signal by the drive control assembly module 200 based on fault information of the battery system 500. Compared to the traditional new energy forklift electrical system architecture where four power cables connect the battery system and each controller (two positive and two negative, two for traction control and two for oil pump control), in this embodiment, the drive control assembly module 200 is connected to the positive and negative terminals of the battery system 500 via two power cables (one positive and one negative), which reduces the number of power cable connections, lowers costs, and simplifies and makes the fault protection strategy execution simpler and more reliable. When the battery system fails, it performs active and passive protection, with passive protection requiring the vehicle control strategy. Therefore, when the battery system fails, it sends fault information to other devices, allowing them to take corresponding measures to protect the battery system. Thus, the reaction speed and reliability of other devices are extremely important for the protection of the battery system. The protection execution path of this utility model embodiment is as follows: the battery system sends fault information to the drive control assembly module, and performs relevant actions, such as shutdown, according to the internal strategy. Figure 2 and Figure 4 The corresponding protection execution path is as follows: the battery system sends fault information to the vehicle controller, which then sends it to the traction control and oil pump control, and finally outputs execution commands to the traction motor and oil pump motor. Figure 3 The corresponding protection execution path is as follows: the battery system sends fault information to the traction controller, then outputs an execution command to the traction motor, and sends an instruction to the oil pump electronic control, which then outputs an execution command to the oil pump motor. As can be seen from the above description, compared to the embodiment of this utility model, Figure 2 , 3 The transmission path of schemes 4 and 5 is longer, and all transmission paths involve external CAN (Controller Area Network) communication wires, passing through multiple connectors and controllers, resulting in lower reliability compared to the embodiment of this utility model. This utility model, by directly connecting the battery system to the drive control assembly module, can directly control other electrical components based on power failure information while providing power, reducing information transmission paths and improving reliability.

[0047] In some optional embodiments, the drive control assembly module 200 of the utility model embodiment further integrates a power converter function, for example, a DC (Direct Current)-DC converter, and the electrical system does not need an external DC-DC. The DC-DC converter integrated in the drive control assembly module 200 is used to convert the first voltage power provided by the battery system 500 into the second voltage power, that is, to convert the high-voltage power into the low-voltage power, thereby providing the low-voltage power for the low-voltage modules in the drive control assembly module 200, the vehicle operation system 100, the instrument system 300, the light system 400, the low-voltage control modules in the battery system 500 and other electrical components of the vehicle. The low-voltage control module of the battery system 500 is a BMS (Battery Management System) controller, and other electrical components include: a reversing buzzer, a horn, etc., but are not limited thereto. The specific first voltage and second voltage are determined according to the requirements of the electrical components, for example, the voltage range of the electrical components such as the display instrument, the reversing buzzer, the horn, etc. is generally between 9V and 36V, which is only an example and is not limited thereto. The utility model integrates the power converter function, can convert the power provided by the battery system into the low-voltage power required by other electrical components, does not need an external power converter, reduces the space ratio, and further simplifies the line connection between the electrical components.

[0048] In some alternative embodiments, the drive control assembly module 200 of the utility model embodiment also integrates the fuse box function, without external fuse box, which can effectively protect the damaged vehicle electrical components, and has the fuse blown alarm function. The positive electrode of the power supply of the low-voltage electrical components of the new energy forklift is generally connected with the appropriate specification fuse to prevent the electrical components from short circuiting, causing the line to burn out, and even causing a fire accident. Therefore, the new energy forklift is equipped with a fuse box, and the number of internal fuses is generally more than 10, and more, the number of fuses is more than 30. The more the number of fuses, the larger the size of the fuse box, and most of the fuse boxes, in order to reduce the cost, the fuses do not have a fault alarm function when they burn out, and some faults are not discovered until the vehicle cannot work abnormally. And when the fuse burns out, replacing the fuse will also generate certain service cost and material cost. Therefore, the drive control assembly module 200 in the utility model embodiment integrates the fuse box function, and uses a semiconductor to replace the traditional plug-in fuse, which has an overcurrent detection function, and detects the low-voltage current flowing into the drive control assembly module (200), the vehicle operating system (100), the instrument system (300), the light system (400) and other electrical components of the vehicle. When the detected electrical components exceed the set current threshold, the semiconductor stops working immediately, cutting off the power supply (equivalent to the traditional fuse blowing, no longer supplying power to the electrical components, that is, no line burning accident will occur). At the same time, an alarm signal is generated, and a fault code corresponding to the alarm signal is sent to the instrument through the CAN communication wire, so as to timely alarm the driver and contact the technical personnel for fault troubleshooting. Because the semiconductor stops working before it is damaged, it does not need to be replaced, and the fuse maintenance work can be omitted compared with replacing the traditional plug-in fuse. The utility model integrates the fuse box alarm module, which can realize the alarm function, improve the intelligent degree of the electrical system, facilitate the technical personnel to timely troubleshoot the fault, stop working before the fuse is damaged, prevent the further expansion of the fault, and improve the safety. In addition, the fault report through the CAN communication wire can improve the reliability, accuracy, flexibility and real-time performance of the alarm data transmission, improve the intelligent degree of the electrical system, and avoid further expansion of the fault.

[0049] In some alternative embodiments, the utility model embodiment can integrate the whole vehicle controller, the traction motor controller and the oil pump motor controller in the drive control assembly module 200, reduce the difficulty of cooperative work of different controllers, integrate the DC-DC converter function and the fuse box function, and report the fault through the CAN bus, improve the intelligent degree, and Figure 2 、 Figure 3 Figure 4Compared with a traditional electrical system architecture, the electrical system of the embodiment of the utility model has higher integration, has fewer whole vehicle controllers, DC-DC converters, fuse boxes, low-voltage wiring harnesses and high-voltage cables, has relatively fewer electrical system parts, has simple spatial arrangement, improves maintenance convenience, and reduces whole vehicle cost.In addition, the BMS controller of the battery system, the compressor controller and other controllers can be further integrated with the drive control assembly module 200 according to actual requirements, the working voltage of the instrument system 300, the light system 400 and the battery low-voltage control module can be changed to be the same as the high voltage of the battery system 500, the DC-DC converter function in the drive control assembly module 200 is removed, and the DC-DC converter function can be transferred from the drive control assembly module 200 to other systems, such as the battery system, and only examples are given, and the utility model is not limited thereto.

[0050] The electrical system provided by the utility model obtains the operation signal of the driver to the vehicle through the vehicle operation system, and the drive control assembly module with the control function of multiple controllers is integrated to generate the control instruction according to the operation signal, so that the components corresponding to the operation signal perform actions according to the control instruction.The utility model integrates the control functions of multiple controllers, can improve the integration of the electrical system, reduce the space ratio, reduce the transmission path, reduce the difficulty of cooperative work of different controllers, simplify the line connection between electrical parts, and improve the maintenance convenience.

[0051] The embodiment of the utility model further provides a new energy electric forklift truck, which comprises the electrical system shown in the above Figure 2 The embodiment of the utility model further provides a new energy electric forklift truck, which comprises the electrical system shown in the above

[0052] Although the embodiments of the utility model are described in combination with the drawings, those skilled in the art can make various modifications and changes without departing from the spirit and scope of the utility model, and such modifications and changes all fall within the scope defined by the appended claims.

Claims

1. An electrical system, characterized in that, The system includes: The vehicle operating system (100) is used to acquire the driver's operation signals to the vehicle; The drive control assembly module (200) pre-optimizes the path of the control strategy based on the vehicle control function of the vehicle controller, the traction motor control function of the traction motor controller, and the oil pump motor control function of the oil pump motor controller. It optimizes the transmission path of the operation signals between different controllers and integrates the control functions of multiple controllers in the drive control assembly module (200). It is connected to the vehicle operating system (100) to receive the operation signals and generate control instructions according to the operation signals, so that the components corresponding to the operation signals perform actions according to the control instructions.

2. The system according to claim 1, characterized in that, Also includes: An instrument system (300) is connected to the drive control assembly module (200) and is used to display operation information generated based on the operation signal; A lighting system (400), connected to the drive control assembly module (200), is used to display lighting information generated based on the operation signal; The battery system (500) is connected to the drive control assembly module (200) and is used to provide power to the drive control assembly module (200). The drive control assembly module (200) generates control commands and a first alarm signal based on the fault information of the battery system (500).

3. The system according to claim 1, characterized in that, The vehicle control function is to receive the operation signal and send the operation signal to the traction motor controller or the oil pump motor controller; The traction motor control function is to control the speed of the traction motor according to the operation signal; The oil pump motor control function is to control the speed of the oil pump motor according to the operation signal.

4. The system according to claim 2, characterized in that, The drive control assembly module further includes a power converter function, used to convert the first voltage power supply provided by the battery system (500) into a second voltage power supply, and to provide the second voltage power supply to the drive control assembly module (200), the vehicle operating system (100), the instrument system (300), the lighting system (400), the battery system (500) and vehicle electrical components.

5. The system according to claim 4, characterized in that, The drive control assembly module (200) is connected to the positive and negative terminals of the battery system (500) via two power cables.

6. The system according to claim 4, characterized in that, The drive control assembly module (200) further includes a fuse box function, used to perform overcurrent detection on the low-voltage current flowing into the drive control assembly module (200), the vehicle operating system (100), the instrument system (300), the lighting system (400) and the vehicle electrical components, and to cut off the power supply when the low-voltage current exceeds a preset current threshold.

7. The system according to claim 6, characterized in that, The drive control assembly module (200) further includes a fuse box alarm module, which generates a second alarm signal when the fuse box function cuts off the power supply, and sends the alarm signal to the instrument system (300) for display.

8. The system according to claim 6, characterized in that, The fuse box function is based on semiconductors to cut off the power supply.

9. The system according to claim 7, characterized in that, The first alarm signal and / or the second alarm signal are sent to the instrument system (300) via the controller local area network bus.

10. A new energy electric forklift, characterized in that, The electrical system comprising any one of claims 1 to 9.

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