Power van power generation device configuration structure and power van

Abstract

The utility model discloses a power supply vehicle power generation device configuration structure and a power supply vehicle in the technical field of power supply vehicles, and aims to solve the problems that a traditional power supply vehicle is too large in size, high in noise and emission pollution and not suitable for working in urban core areas and residential areas, and a diesel engine is high in fuel consumption rate in long-time low-power operation. The system comprises a vehicle system and an additional power boosting system, the vehicle system comprises a vehicle control unit, a power battery, a range extender and a motor controller, and the additional power boosting system comprises an energy management system, a power equalization battery and a power boosting unit. According to the solution provided by the utility model, the weight and the size of equipment are reduced, so that the equipment can conveniently work in urban core areas and residential areas, the oil-electricity conversion efficiency of the generator is improved, noise and emission pollution are reduced, the power output characteristic curve of the equipment is optimized, and the range extender engine operates at the optimal working point through different configuration modes and operation strategies; and the fuel economy of the engine is ensured.

Description

Technical Field

[0001] The utility model relates to a power generation device configuration structure of a power supply vehicle and a power supply vehicle, belonging to the technical field of power supply vehicles. Background Technique

[0002] With the continuous development of power grid construction and the increasing requirement for power supply reliability, the demand for live working is increasing day by day, and the demand for mobile high-power continuous power supply in industrial and commercial production and residents' production and life is also becoming increasingly prominent. As an important device for power grid guarantee and mobile power supply, the power supply vehicle will play an increasingly important role in the social and economic development and the improvement of living standards.

[0003] At present, traditional power supply vehicles are powered by on-vehicle diesel generators. The generators are heavy and large in volume, and it is difficult to achieve high-power configuration due to the limitation of the carrier vehicle. Secondly, the power output of the generator is affected by the speed of the diesel engine. When the load suddenly changes, the engine speed needs a certain time to adjust, which may lead to instantaneous power fluctuations and affect the power quality. When supplying power to some industrial production equipment or precision instruments with high power quality requirements, it may cause equipment failures or data loss. At the same time, high-power diesel generators have low emission standards, and a large amount of harmful gases will be generated during the working process, which seriously endangers air quality and human health. Moreover, the noise of up to 80-100 decibels will also cause noise pollution to the surrounding environment and affect people's living and working environments.

[0004] Although the new energy storage type power supply vehicle can solve the above problems of traditional diesel power generation vehicles, there are also many disadvantages. For example, due to the limitation of the battery energy density, to achieve the same energy output and endurance as the diesel power generation vehicle, a battery pack with a large volume and weight is required, which will affect the load capacity, space utilization and mobility of the vehicle. For some scenarios that require long-term and large-capacity power supply, multiple energy storage type power supply vehicles or frequent battery pack replacement may be required to meet the demand. Secondly, the charging time is long. Even with fast charging technology, it usually takes several hours or even longer to fully charge the battery of the energy storage type power supply vehicle. In some emergency situations with high requirements for power supply timeliness, the energy storage type power supply vehicle may not be able to respond quickly. Moreover, the cost of high-performance energy storage batteries is still relatively high at present, resulting in a relatively high initial purchase cost of the energy storage type power supply vehicle. Compared with traditional diesel power generation vehicles, it may take a longer time to recover the cost by saving fuel costs and other means.

[0005] To sum up, traditional power supply vehicles are too large in volume, have high noise and emission pollution, are not suitable for working in the core areas of cities and residential areas, and the fuel consumption rate is high when the diesel engine runs at low power for a long time, which affects the economy of the power supply vehicle. The new energy storage type power supply vehicle has weak long-endurance ability, large investment and high use cost. Content of the Utility Model

[0006] The object of the present utility model is to overcome the deficiencies in the technologies of traditional diesel generator vehicles and new energy storage power supply vehicles, and to provide a power generation device configuration structure and a power supply vehicle for a power supply vehicle, which reduce the weight and volume of the equipment, make it convenient to work in the urban core area and residential area, improve the oil-electric conversion efficiency of the generator, reduce noise and emission pollution, optimize the power output characteristic curve of the equipment, and make the range extender engine operate at the best working point through different configuration methods and operation strategies, ensuring the fuel economy of the engine. At the same time, reduce the overall cost of the equipment and improve the economy.

[0007] To solve the above technical problems, the present utility model is implemented by adopting the following technical solutions:

[0008] In the first aspect, the present utility model provides a power generation device configuration structure for a power supply vehicle, including a vehicle system and an additional power boosting system. The vehicle system includes a vehicle controller, and the vehicle controller is electrically connected to a power battery, a range extender, and a motor controller. The range extender and the motor controller are both connected to the power battery;

[0009] The additional power boosting system includes an energy management system, and the energy management system is electrically connected to a power balancing battery and a power boosting unit. The power balancing battery and the power boosting unit are both connected to the power battery, and the vehicle controller is electrically connected to the energy management system;

[0010] The additional power boosting system is electrically connected to an on-vehicle inverter and a grid-connected / islanding quick-switching device, and the on-vehicle inverter is connected to the power battery.

[0011] Further, the power boosting unit includes a plurality of power modules.

[0012] Further, the range extender and the power module both include an engine and a generator.

[0013] Further, the power battery is connected to an on-vehicle charger and a fast charging interface, and the on-vehicle charger is connected to a slow charging interface.

[0014] Further, the vehicle controller is connected to the power battery, the range extender, and the motor controller through a CAN bus.

[0015] Further, the motor controller is electrically connected to a main drive motor, and the main drive motor is connected to a reducer and a differential.

[0016] Further, the grid-connected / islanding quick-switching device is electrically connected to the on-vehicle inverter.

[0017] Further, the grid-connected / islanding quick-switching device is connected to a load and the mains power.

[0018] In a second aspect, the present utility model provides a power vehicle, including the power vehicle power generation device configuration structure described in the first aspect.

[0019] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0020] 1. For the power vehicle power generation device configuration structure, through the cooperation of the power battery, the range extender, the power equalizing battery, and the power boosting unit, and the flexible configuration of the multiple components, a solution for a combined power vehicle with multiple power modules and multiple power batteries configured flexibly is proposed, thereby reducing the weight and volume of the equipment, making it convenient to work in the urban core area and residential areas. At the same time, the oil-electric conversion efficiency of the equipment is improved, the noise and emission pollution are reduced, the power output characteristic curve of the equipment is optimized, and through different configuration methods and operation strategies, the range extender engine operates at the optimal working point, ensuring the fuel economy of the engine.

[0021] 2. For the power vehicle power generation device configuration structure, by adding an additional power boosting system on the basis of the vehicle system and operating in parallel with the vehicle system, a solution for a combined mobile power vehicle with multiple power modules and multiple power batteries configured flexibly is proposed, thereby reducing the volume of the vehicle and making it convenient to move in the urban core area and residential areas. At the same time, by utilizing the energy storage characteristics of the power battery and the power equalizing battery, the "peak shaving and valley filling" of the power output of the range extender engine is realized, and the range extender engine operates at the optimal working point, ensuring the fuel economy of the engine.

[0022] 3. For the power vehicle power generation device configuration structure, the off-grid fast switch device can communicate with the vehicle-mounted inverter, and seamless automatic on-grid and off-grid switching can be realized, achieving zero flicker.

[0023] 4. For the power vehicle power generation device configuration structure, in terms of electrical performance, it has the advantages of fast response to load changes, wide dynamic range, and good power quality; in terms of mechanical performance, it has the characteristics of small vibration and low noise; in terms of appearance and weight, it has the characteristics of compact structure and light weight; in terms of emissions, the emission index of this application is better than the national IV emission standard. Description of the Drawings

[0024] Figure 1 is a schematic connection diagram of a power vehicle power generation device configuration structure provided according to an embodiment of the present utility model;

[0025] Figure 2 is a schematic diagram of the power boosting unit structure provided according to an embodiment of the present utility model;

[0026] Figure 3 is a schematic connection diagram of the energy management system provided according to an embodiment of the present utility model;

[0027] Figure 4It is a schematic diagram of the combination method of multiple power modules and multiple power batteries provided by an embodiment of the present utility model;

[0028] Figure 5 It is a schematic diagram of the control strategy of combination method a provided by an embodiment of the present utility model;

[0029] Figure 6 It is a schematic diagram of the control strategy of combination method b provided by an embodiment of the present utility model;

[0030] Figure 7 It is a schematic diagram of the control strategy of combination method c provided by an embodiment of the present utility model;

[0031] Figure 8 It is a schematic diagram of the control strategy of combination method d provided by an embodiment of the present utility model;

[0032] Figure 9 It is a schematic diagram of the working principle of the on / off-grid fast switch device provided by an embodiment of the present utility model;

[0033] Figure 10 It is a schematic diagram of the working process of the power vehicle provided by an embodiment of the present utility model. Specific embodiments

[0034] The present utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. Embodiment 1:

[0037] The present utility model provides a power generation device configuration structure for a power vehicle, including a vehicle system and an additional power boost system. The vehicle system includes a vehicle controller, which is electrically connected to a power battery, a range extender, and a motor controller. The range extender and the motor controller are both connected to the power battery; the additional power boost system includes an energy management system, which is electrically connected to a power balance battery and a power boost unit. The power balance battery and the power boost unit are both connected to the power battery, and the vehicle controller is electrically connected to the energy management system; the additional power boost system is electrically connected to an on-vehicle inverter and a grid-connected / islanding fast-switching device, and the on-vehicle inverter is connected to the power battery; the on-vehicle inverter and the grid-connected / islanding fast-switching device are components for connecting the power vehicle to a load or the power grid.

[0038] Specifically, in Figure 1 ~ Figure 10 the figures, the power battery in the figures is the on-vehicle power battery, the power balance battery is the battery for balancing the output power, the range extender is the on-vehicle range extender, and the power boost unit is the power module combination.

[0039] As Figure 1As shown, specifically, the energy management system EMS is a system for managing the power generation device of the power supply vehicle, used for real-time monitoring, intelligent control, and optimized scheduling of the vehicle's energy, thereby improving energy utilization efficiency, reducing operating costs, and ensuring the safety and reliability of the system; the energy management system EMS and the vehicle control unit VCU work together to achieve unified monitoring and management of each energy unit of the vehicle, and can communicate and interact with the superior control platform or cloud platform through a dedicated interface and transmission channel; the VCU is the vehicle control unit, which is the central control unit of the power supply vehicle, communicates with each component through the CAN bus, monitors the actions of the lower-level component controllers, and is responsible for normal vehicle driving, braking energy feedback, energy management of the vehicle drive system and power battery, power generation energy management of the range extender, network management, fault diagnosis and handling, vehicle status monitoring, etc., so as to ensure that the vehicle works normally and stably under good power performance, high economy, and reliability; this application adds a set of additional power boosting device to the original vehicle system, adopting a combination of multiple power modules and multiple power batteries; the power battery is the battery configured for the vehicle system, and the power balance battery is the battery configured for the additional power boosting system; the range extender is the power generation and range extension device of the vehicle system, and the power boosting unit is a combination of power modules. The power boosting unit is only used to provide electrical energy output for the load during the parking operation of the power supply vehicle. The multiple power modules and multiple power batteries can be flexibly configured and combined to meet the power requirements in different usage scenarios and usage modes; this application proposes a solution for a mobile power supply vehicle with flexible configuration and combination of multiple power modules and multiple power batteries by adding a set of additional power boosting system to the vehicle system and working in parallel with the vehicle system, thereby facilitating the reduction of the vehicle's volume and making it easy to move in the urban core area and residential areas; at the same time, by utilizing the energy storage characteristics of the power battery and the power balance battery, and coordinating with the vehicle's power requirements for the range extender and the power boosting unit, through different combination methods, the "peak shaving and valley filling" of the power output of the range extender engine is realized, enabling the range extender engine to operate at the best working point and ensuring the fuel economy of the engine; optionally, both the range extender and the power boosting unit include an engine (ECU) and a generator (GCU); the power battery is connected to an on-vehicle charger and a fast charging interface, and the on-vehicle charger is connected to a slow charging interface. The power battery can be charged through the fast charging interface and the slow charging interface; the vehicle control unit VCU is connected to the power battery, the range extender, and the motor controller through the CAN bus.

[0040] Furthermore, through the combined configuration of multiple power modules and multiple power batteries in this application, the power supply vehicle can achieve wide power range output. The system improves the power quality by introducing a power balance battery; through certain control strategies, it can ensure that the range extender engine operates at the best working point, thereby achieving low noise and low vibration; and it can maintain a high oil-electricity conversion efficiency even under large load fluctuations, bringing low costs and a good user experience to users.

[0041] An embodiment, in which the motor controller is electrically connected to the main drive motor, and the main drive motor is connected to a speed reducer and a differential; the motor controller is used to invert direct current into alternating current to provide electrical energy for the main drive motor, and is also used to control various states of the motor, and has system protection and status monitoring functions; the main drive motor is used to provide power input during the driving of the power vehicle.

[0042] An embodiment, in which the grid-connected and off-grid fast-switching device is electrically connected to the vehicle-mounted inverter, and the grid-connected and off-grid fast-switching device is connected to a load and the mains power; the vehicle-mounted inverter is used to convert the direct current output by the power battery, the power balance battery, the range extender, and the power boosting unit into alternating current to provide power for the load; the grid-connected and off-grid fast-switching device SSE can communicate with the vehicle-mounted inverter, and can achieve seamless automatic grid-connected and off-grid switching, realizing zero flicker.

[0043] As Figure 2 shown, an embodiment, in which the power boosting unit includes a plurality of power modules; the power boosting unit is composed of power module combinations, and power modules 1 to power module n can be configured according to the actual application scenario. The power boosting unit works according to the instructions issued by the energy management system EMS, and at the same time feeds back various working states to the energy management system EMS. According to different control strategies issued, one, multiple or all of the power modules inside the power boosting unit can be controlled to work.

[0044] As Figure 3 shown, an embodiment, in which the energy management system EMS is used for the transmission and collection of vehicle energy data, providing real-time energy monitoring and control, energy control strategies, and energy analysis; the vehicle controller VCU is used for the coordination and control of various components during the driving and parking operations of the power vehicle; the vehicle controller VCU coordinates and controls the power battery BMS, the range extender control unit RCU, and the motor controller MCU; the energy management system EMS is responsible for the coordination and control of the components of the additional power boosting system, including the power balance battery BMS, the power boosting unit, the vehicle-mounted inverter control unit DC / AC, and the grid-connected and off-grid fast-switching device SSE; the energy management system EMS and the vehicle controller VCU perform information and data interaction through the CAN bus, and collect the working states of various components and issue control strategies.

[0045] As Figure 4As shown in the figure; in one embodiment, there are mainly four combination methods for the multi-power module and multi-power batteries of the present application: a) The combination method of power battery + power boosting unit, which is mainly applicable to vehicles with a relatively large battery capacity, and the power boosting unit mainly provides emergency power input supplement at the operation site; b) The combination method of power battery + power boosting unit + power equalizing battery, which is mainly applicable to the situation where the power battery capacity is small and cannot meet the load demand at the operation site and the power matching with the power boosting unit; c) The combination method of power battery + range extender + power boosting unit, which is mainly applicable to vehicles with a relatively small original power, and the power boosting unit mainly provides emergency power input supplement at the operation site; d) The combination method of power battery + range extender + power boosting unit + power equalizing battery, which is mainly applicable to the scenario of operation in remote areas, with a large user load power demand and a long power outage operation time.

[0046] As Figure 5 ~Appendix Figure 8 shown, according to the four combination methods as Figure 4 described, there are four corresponding control strategies. Now, the control strategy process will be explained with combination c: As Figure 5 shown, during the vehicle driving process, when the power battery power is lower than the set threshold lower limit, the VCU will start the range extender to work. After the battery power reaches the set threshold upper limit, the range extender will be turned off; when the vehicle is used as a power supply vehicle to supply power externally, the output power of the power supply vehicle will be automatically determined according to the load power demand at the operation site. If the output power is less than the output capacity of the power battery, only the power battery will supply power through the inverter; if the output power is greater than the output capacity of the power battery + power boosting unit, the power boosting unit and the range extender will be started, and the power boosting unit + range extender + power battery will supply power externally; in other cases, the power battery + power boosting power supply will supply power.

[0047] As Figure 9 shown, the power supply vehicle realizes the island power supply or the primary and secondary parallel off-grid power supply to the load by closing or disconnecting the switching devices such as QS1, QS2, QS3, PCC, SSE, KM, etc. according to a certain logic.

[0048] The present utility model coordinates the power battery, the range extender, the power equalizing battery and the power boosting unit, and flexibly configures the multiple components, thereby proposing a solution for a flexible configuration combined power supply vehicle of the multi-power module and multi-power batteries, so as to reduce the equipment weight and volume, make it convenient to work in the urban core area and residential area, improve the equipment oil-electric conversion efficiency, reduce noise and emission pollution, optimize the equipment power output characteristic curve, and make the range extender engine operate at the best working point through different configuration methods and operation strategies, ensuring the fuel economy of the engine.

[0049] In terms of electrical performance, the utility model has the advantages of fast load change response, wide dynamic range, and good power quality; in terms of mechanical performance, it has the characteristics of small vibration and low noise; in terms of appearance weight, it has the characteristics of compact structure and lightweight; in terms of emissions, the emission indicators of this application are better than the National IV emission standards. Embodiment 2:

[0050] The utility model provides a power supply vehicle, comprising the configuration structure of the power supply vehicle power generation device described in the first embodiment.

[0051] Specifically, Figure 10 As shown, the power supply vehicle drives to the work site, plugs the dedicated connection cable and load access point of the power supply vehicle to ensure reliable connection, and the on-board inverter detects the voltage and phase of the grid connection point in real time through the grid-connected and off-grid fast switching device SSE. When the grid-connected and off-grid fast switching device SSE detects that the voltage and phase of the grid connection point are synchronized with the power grid, it quickly closes the switch to achieve a grid-connected operation of the mobile power supply vehicle; after that, the main city power switch is disconnected for non-stop maintenance work. The load power is fully provided by the power supply vehicle, and the power supply vehicle is in off-grid working mode. When the vehicle controller VCU or the energy management system EMS detects that the vehicle-mounted power battery power SOC is less than the threshold value 1, the VCU starts the range extender (vehicle range extender) to work. When the vehicle controller VCU or the energy management system EMS When the energy management system EMS detects that the SOC of the on-board power battery is less than the threshold value 2, the VCU and EMS start the range extender (vehicle range extender) and the power boost unit (power module) to work at the same time. According to the on-site load conditions, the EMS can control one or more power modules of the power boost unit to work. After the on-site operation is completed, the on-board inverter detects the voltage and phase of the grid connection point in real time through the grid-connected and off-grid fast switching device SSE. When the voltage and phase are synchronized with the power grid, the on-board inverter quickly switches to the grid-connected working mode to achieve the secondary grid connection of the mobile power supply vehicle. At this time, the lower-level switch of the municipal power is closed, and the municipal power is fully restored; the SSE built-in fast switch is disconnected, and the PCC switch at the grid connection point is disconnected, so that the mobile power supply vehicle is off the grid, and the operation of the mobile power supply vehicle is completed.

[0052] The utility model can be used for uninterrupted power supply operation in the power grid and meet the needs of industry, commerce and residents' production and life for mobile high-power continuous power supply. It has the characteristics of wide power range, compact structure and low cost, and is an important measure to improve power supply reliability and quality service level.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A power generation device configuration structure for a power vehicle, characterized in that, It includes a vehicle system and an additional power boosting system. The vehicle system includes a vehicle controller, which is electrically connected to a power battery, a range extender, and a motor controller. The range extender and the motor controller are both connected to the power battery. The additional power boosting system includes an energy management system, which is electrically connected to a power balancing battery and a power boosting unit. The power balancing battery and the power boosting unit are both connected to the power battery. The vehicle controller is electrically connected to the energy management system. The additional power boosting system is electrically connected to an on-vehicle inverter and a grid-connected and off-grid quick-switching device. The on-vehicle inverter is connected to the power battery.

2. The power generation device configuration structure of the power supply vehicle according to claim 1, wherein The power boosting unit includes a plurality of power modules.

3. The power generation device configuration structure of the power supply vehicle according to claim 2, characterized in that The range extender and the power modules both include an engine and a generator.

4. The power generation device configuration structure of the power supply vehicle according to claim 1, wherein The power battery is connected to an on-vehicle charger and a fast charging interface. The on-vehicle charger is connected to a slow charging interface.

5. The power generation device configuration structure of the power supply vehicle according to claim 1, wherein The vehicle controller is connected to the power battery, the range extender, and the motor controller through a CAN bus.

6. The power generation device configuration structure of the power supply vehicle according to claim 1, characterized in that, The motor controller is electrically connected to a main drive motor, and the main drive motor is connected to a reducer and a differential.

7. The power generation device configuration structure of the power supply vehicle according to claim 1, characterized in that, The grid-connected and off-grid quick-switching device is electrically connected to the on-vehicle inverter.

8. The power generation device configuration structure of the power supply vehicle according to claim 7, wherein The grid-connected and off-grid quick-switching device is connected to a load and the mains.

9. A power supply vehicle, characterized in that, It includes the power generation device configuration structure of the power supply vehicle according to any one of claims 1 to 8.

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