Integrated energy storage system and energy storage control method

Abstract

The invention discloses an integrated energy storage system and an energy storage control method, and relates to the field of hybrid power systems, the integrated energy storage system comprises an on-load module, a load module and a bidirectional conversion module; the load module comprises a transmission; the on-load module comprises a fuel cell, an integrated energy storage system and a DC / DC converter; the bidirectional conversion module comprises a motor inverter and a motor; the on-load module is used for storing energy and driving the load module; the load module is used for outputting or inputting mechanical torque on the wheel side; and the bidirectional conversion module is used for connecting energy conversion between the on-load module and the load module. According to the scheme, the power battery and the super capacitor are responsible for storing recycled electric energy. When the fuel cell, the power cell and the super capacitor jointly supply energy, energy output of the fuel cell is gentle, fluctuation along with time change is small, energy can be continuously supplied, a low-frequency part of energy demand change is borne by the power cell, and a high-frequency part of energy demand change is borne by the super capacitor.

Description

Technical Field

[0001] The present application relates to the field of hybrid systems, and in particular to an integrated energy storage system, an energy storage control method, an energy storage control device, an electronic device, a storage medium, and a mobile platform. Background Art

[0002] With increasing environmental protection requirements and the advancement of energy transformation, pure electric tractors are gradually becoming the mainstream choice in the logistics and transportation sector. However, the limited energy storage capacity of existing pure electric vehicle batteries results in short driving ranges and long charging times, restricting their application in long-distance transportation.

[0003] By adding a fuel-electric system, continuous charging can be achieved, further reducing vehicle operating costs, energy consumption, and emissions. However, when heavy-loaded vehicles start and stop instantly, it is difficult to effectively release and absorb electricity in a short period of time.

[0004] The known "Dual-power hybrid system and hybrid equipment", patent number "CN202411155588.8", uses a hybrid architecture of a hydrogen fuel cell and a lithium battery in parallel, and uses a DC-DC direct current voltage regulator module for step-by-step linear output control. The lithium battery module participates in the output when the load increases, alleviating the voltage drop of the hydrogen fuel cell, and disconnects the output in time through a relay to protect the battery.

[0005] Therefore, a solution for energy storage and energy storage control is needed to quickly respond to starting and braking and reduce the instantaneous impact on the battery system and the fuel-electric system. Summary of the Invention

[0006] The purpose of the present invention is to provide an integrated energy storage system, an energy storage control method, an energy storage control device, an electronic device, a storage medium and a mobile platform, which at least solve one of the technical problems of how to quickly respond to starting and braking and how to reduce the instantaneous impact on the battery system and the fuel-electric system.

[0007] The present invention provides the following solutions:

[0008] According to one aspect of the present invention, there is provided an integrated energy storage system, comprising:

[0009] On-load modules, load modules and bidirectional conversion modules;

[0010] The load module includes a transmission;

[0011] The on-load module includes a fuel cell, an integrated energy storage system, and a DC / DC converter;

[0012] The bidirectional conversion module includes a motor inverter and a motor;

[0013] On-load module, used for energy storage and driving load modules;

[0014] A load module, used for outputting or inputting mechanical torque on the wheel side;

[0015] Bidirectional conversion module, used for energy conversion between the load module and the load module.

[0016] Furthermore, it also includes:

[0017] The motor inverter includes a first input / output terminal and a second input / output terminal;

[0018] The integrated energy storage system includes an input end and an input / output end;

[0019] The fuel cell comprises a first output end and a second output end;

[0020] The first output terminal and the second output terminal of the fuel cell are connected to the input terminal of the integrated energy storage system and the input / output terminal of the motor inverter respectively;

[0021] A DC / DC converter including a first input / output terminal and a second input / output terminal;

[0022] A first input / output terminal and a second input / output terminal of the DC / DC converter are connected to an input / output terminal of the integrated energy storage system and a first input / output terminal of the motor inverter, respectively;

[0023] The motor includes an electrical input terminal and a torque output terminal;

[0024] The transmission includes an input end and an output end;

[0025] a second input / output terminal of the motor inverter, connected to an electrical input terminal of the motor;

[0026] The torque output end of the motor is connected to the input end of the transmission;

[0027] The output end of the transmission, the torque is connected to the vehicle side.

[0028] Furthermore, the integrated energy storage system includes: a power battery and a supercapacitor;

[0029] The power battery includes, input / output terminals;

[0030] The input / output terminal of the power battery is used as the input terminal of the integrated energy storage system and is set as a unidirectional input;

[0031] The input / output terminal of the power battery is used for the input / output terminal of the integrated energy storage system and is set to bidirectional input / output;

[0032] The supercapacitor includes, input / output terminals;

[0033] The input / output terminal of the supercapacitor is connected in parallel with the input / output terminal of the power battery and is synchronously set to unidirectional input or bidirectional input / output.

[0034] Furthermore, the DC / DC converter includes: a boost circuit and a buck circuit;

[0035] Based on the first input / output terminal and the second input / output terminal of the DC / DC converter, the input / output terminal of the integrated energy storage system and the first input / output terminal of the motor inverter are connected respectively, and the boost circuit is used to boost the electric energy output from the input / output terminal of the energy storage system and input it to the first input / output terminal of the motor inverter;

[0036] Based on the first input / output terminal and the second input / output terminal of the DC / DC converter, the input / output terminal of the integrated energy storage system and the first input / output terminal of the motor inverter are respectively connected, and the buck circuit is used to step down the electric energy of the first input / output terminal of the motor inverter and input it to the input / output terminal of the energy storage system.

[0037] Furthermore, the DC / DC converter includes: a first comparison circuit and a second comparison circuit;

[0038] a first comparison circuit, configured to determine whether a pump-up voltage value of a motor inverter bus is higher than a first preset pump-up voltage threshold;

[0039] a second comparison circuit, configured to determine whether a voltage value outputted by an input / output terminal of the energy storage system is lower than a first energy storage voltage threshold;

[0040] If the pump-up voltage value of the motor inverter bus is higher than the first preset pump-up voltage threshold, and the voltage value output by the input / output end of the energy storage system is lower than the first energy storage voltage threshold, the step-down circuit is turned on.

[0041] Furthermore, the DC / DC converter includes: a third comparison circuit and a discharge circuit;

[0042] a third comparison circuit, configured to determine whether the pump-up voltage value of the motor inverter bus is higher than a second preset pump-up voltage threshold;

[0043] A discharge circuit for releasing the pumped-up voltage of the motor inverter bus;

[0044] If the pump-up voltage value of the motor inverter bus is higher than the second preset pump-up voltage threshold, the discharge circuit is turned on to release the pump-up voltage of the motor inverter bus.

[0045] Furthermore, the DC / DC converter includes: a third comparison circuit;

[0046] a third comparison circuit, configured to determine whether a voltage value outputted by an input / output terminal of the energy storage system is lower than a second energy storage voltage threshold;

[0047] If the voltage value output by the input / output end of the energy storage system is lower than the second energy storage voltage threshold, the boost circuit is turned off. The method also includes connecting the input end of the integrated energy storage system and the input / output end of the motor inverter respectively based on the first output end and the second output end of the fuel cell, and the first output end of the fuel cell outputs current to the input end of the integrated energy storage system while outputting current to the input / output end of the motor inverter.

[0048] Furthermore, the DC / DC converter includes: a fourth comparison circuit;

[0049] a fourth comparison circuit, configured to determine whether a voltage value outputted by an input / output terminal of the energy storage system is higher than a first energy storage voltage threshold;

[0050] If the voltage value outputted by the input / output terminal of the energy storage system is higher than the first energy storage voltage threshold, the step-down circuit is turned off.

[0051] According to two aspects of the present invention, there is provided an energy storage control method, based on the integrated energy storage system according to the claims, the energy storage control method comprising:

[0052] Based on the motor inverter busbar pump-up voltage, determine whether the vehicle is in a braking state;

[0053] If yes, then determining whether the voltage value outputted by the input / output terminal of the energy storage system is higher than the first energy storage voltage threshold;

[0054] If yes, the discharge circuit is turned on to release the pumped-up voltage of the motor inverter bus;

[0055] If not, the step-down circuit is turned on to release the pumped-up voltage of the motor inverter bus and charge the integrated energy storage system.

[0056] Furthermore, it also includes:

[0057] Get brake pedal opening status information;

[0058] Generate a braking torque demand value according to the brake pedal opening state;

[0059] Determining whether the braking torque demand value is greater than a preset braking torque threshold;

[0060] If yes, then determining whether the temperature of the step-down circuit is greater than a preset temperature threshold;

[0061] If,yes, then turn off the step-down circuit;

[0062] According to closing the step-down circuit, the discharge circuit and / or the mechanical brake system are opened synchronously.

[0063] According to three aspects of the present invention, there is provided an energy storage control device, the energy storage control device comprising:

[0064] A braking state judgment module is used to judge whether the vehicle is in a braking state based on the motor inverter bus pump-up voltage;

[0065] a voltage threshold comparison module, configured to, if yes, determine whether the voltage value outputted by the input / output terminal of the energy storage system is higher than a first energy storage voltage threshold;

[0066] A discharge circuit opening module is used for opening the discharge circuit to release the pumped-up voltage of the motor inverter bus if the answer is yes;

[0067] The buck circuit start module is used to, if yes, start the buck circuit to release the pump-up voltage of the motor inverter bus and charge the integrated energy storage system.

[0068] Furthermore, it also includes:

[0069] A pedal opening status module is used to obtain brake pedal opening status information;

[0070] A braking torque demand module is used to generate a braking torque demand value according to the brake pedal opening state;

[0071] A torque threshold comparison module is used to determine whether the braking torque demand value is greater than a preset braking torque threshold;

[0072] a temperature threshold comparison module, for determining whether the temperature of the step-down circuit is greater than a preset temperature threshold if yes;

[0073] The step-down circuit closing module is used for closing the step-down circuit if the answer is yes;

[0074] The discharge circuit opening module is used to synchronously open the discharge circuit and / or the mechanical brake system according to closing the step-down circuit.

[0075] According to four aspects of the present invention, there is provided an electronic device, comprising: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0076] A computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the energy storage control method.

[0077] According to five aspects of the present invention, a computer-readable storage medium is provided, which stores a computer program executable by an electronic device. When the computer program runs on the electronic device, the electronic device executes the steps of the energy storage control method.

[0078] According to six aspects of the present invention, there is provided a mobile platform, comprising:

[0079] Electronic equipment, used to implement the steps of the energy storage control method;

[0080] a processor, wherein the processor runs a program and, when the program runs, executes the steps of the energy storage control method based on data output by the electronic device;

[0081] The storage medium is used to store a program, and when the program is running, the steps of the energy storage control method are executed for the data output from the electronic device.

[0082] Through the above solution, the following beneficial technical effects are achieved:

[0083] This application adds a fuel-electric system to a pure electric vehicle, which replenishes the battery, further increases the driving range, and enables long-distance transportation.

[0084] This application uses fuel cells, power batteries and supercapacitors to inject energy into the drive motor. When the car brakes, the drive motor immediately turns into a generator. At the same time, the power battery and supercapacitor are responsible for storing the recovered electrical energy. When it is found that the battery and capacitor voltage is too high and not suitable for energy recovery, a discharge strategy is adopted to continue braking.

[0085] This application uses power batteries and supercapacitors to store recycled electrical energy. When the fuel cell, power battery, and supercapacitor are combined to provide energy, the fuel cell's energy output is relatively smooth, with minimal fluctuations over time, providing sustainable energy supply. The power battery absorbs the low-frequency portion of energy demand changes, while the supercapacitor absorbs the high-frequency portion of energy demand changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] Figure 1 This is a structural diagram of an integrated energy storage system provided by one or more embodiments of the present invention.

[0087] Figure 2 This is a flow chart of an energy storage control method provided by one or more embodiments of the present invention.

[0088] Figure 3 This is a structural diagram of an energy storage control device provided by one or more embodiments of the present invention.

[0089] Figure 4 It is a schematic diagram of an integrated energy storage system provided by a specific embodiment of the present invention.

[0090] Figure 5 Schematic diagram of an integrated energy storage system according to a specific embodiment of the present invention.

[0091] Figure 6 This is a structural block diagram of an electronic device according to an energy storage control method provided by one or more embodiments of the present invention.

[0092] Figure numbers: 1. Integrated energy storage system; 2. Fuel cell; 3. DC / DC converter; 4. Motor inverter; 5. Motor; 6. Transmission; 113. Power battery; 112. Hydrogen fuel bottle; 111. Supercapacitor. DETAILED DESCRIPTION

[0093] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0094] Figure 1 This is a structural diagram of an integrated energy storage system provided by one or more embodiments of the present invention.

[0095] like Figure 1 The integrated energy storage system shown includes:

[0096] On-load modules, load modules and bidirectional conversion modules;

[0097] The load module includes a transmission;

[0098] The on-load module includes a fuel cell, an integrated energy storage system, and a DC / DC converter;

[0099] The bidirectional conversion module includes a motor inverter and a motor;

[0100] On-load module, used for energy storage and driving load modules;

[0101] A load module, used for outputting or inputting mechanical torque on the wheel side;

[0102] Bidirectional conversion module, used for energy conversion between the load module and the load module.

[0103] Specifically, in one embodiment, Figure 4The integrated energy storage system shown includes an integrated energy storage system 1, a fuel cell 2, a DC / DC converter 3, a motor inverter 4, a motor 5, and a transmission 6. In this system, the fuel cell 2, the power battery 113, and the supercapacitor 111 together provide energy. The power battery 113 and the supercapacitor 111 are boosted by the DC / DC converter 3 to the motor inverter 4 and then transmitted to the motor 5 for driving. The motor 5 converts the electrical energy into mechanical energy and transmits it to the transmission 6, thereby driving the vehicle. When the vehicle brakes, the motor 5 becomes a generator, charging the power battery 113 and the supercapacitor 111 and storing energy.

[0104] The electrical energy generated by the fuel cell 2 can also be transferred to the motor 5 through the motor inverter 4. The motor 5 converts the electrical energy into mechanical energy and transmits it to the transmission 6, thereby driving the vehicle. The fuel cell 2 can also charge the power battery 113 and the supercapacitor 111.

[0105] In this embodiment, the transmission is an intermediate component that drives the wheels of the vehicle and can be used to represent the vehicle load. The power battery 113, supercapacitor 111, and integrated energy storage system 1, each or together, drive the vehicle through the motor 5, which is equivalent to driving the vehicle load. Among them, the DC / DC converter 3 drives the motor 5 side with the power battery 113, supercapacitor 111, and integrated energy storage system 1 electric energy, which is a form of driving the load. During braking, the electric energy on the motor 5 side is also charged into the power battery 113 and supercapacitor 111, which is also a form of driving the load. The DC / DC converter 3 is classified as a load module.

[0106] In this embodiment, electrical energy is converted into mechanical energy, or mechanical energy is converted into electrical energy, through the motor inverter 4 and the motor 5. The motor inverter 4 and the motor 5 play the role of a bridge for energy conversion and have a bidirectional conversion function.

[0107] In this embodiment, it also includes:

[0108] The motor inverter includes a first input / output terminal and a second input / output terminal;

[0109] The integrated energy storage system includes an input end and an input / output end;

[0110] The fuel cell comprises a first output end and a second output end;

[0111] The first output terminal and the second output terminal of the fuel cell are connected to the input terminal of the integrated energy storage system and the input / output terminal of the motor inverter respectively;

[0112] A DC / DC converter including a first input / output terminal and a second input / output terminal;

[0113] A first input / output terminal and a second input / output terminal of the DC / DC converter are connected to an input / output terminal of the integrated energy storage system and a first input / output terminal of the motor inverter, respectively;

[0114] The motor includes an electrical input terminal and a torque output terminal;

[0115] The transmission includes an input end and an output end;

[0116] a second input / output terminal of the motor inverter, connected to an electrical input terminal of the motor;

[0117] The torque output end of the motor is connected to the input end of the transmission;

[0118] The output end of the transmission, the torque is connected to the vehicle side.

[0119] Specifically, in one embodiment, Figure 5 The integrated energy storage system 1 shown in the figure consists of a supercapacitor 111, a hydrogen fuel cell 112, and a power battery 113. These three components are connected together via a socket-type connector. The fuel cell 2, power battery 113, and supercapacitor 111 work together to power the electric vehicle, creating a series hybrid electric vehicle architecture.

[0120] In this embodiment, the integrated energy storage system includes: a power battery and a supercapacitor;

[0121] The power battery includes, input / output terminals;

[0122] The input / output terminal of the power battery is used as the input terminal of the integrated energy storage system and is set as a unidirectional input;

[0123] The input / output terminal of the power battery is used for the input / output terminal of the integrated energy storage system and is set to bidirectional input / output;

[0124] The supercapacitor includes, input / output terminals;

[0125] The input / output terminal of the supercapacitor is connected in parallel with the input / output terminal of the power battery and is synchronously set to unidirectional input or bidirectional input / output.

[0126] Specifically, in one implementation, a fuel cell, power battery, and supercapacitor work together to inject energy into the drive motor. When the vehicle brakes, the drive motor instantly transforms into a generator, while the power battery and supercapacitor store the recovered energy. When the fuel cell, power battery, and supercapacitor are combined to provide energy, the fuel cell's energy output is relatively smooth, with minimal fluctuations over time, ensuring sustainable energy supply.

[0127] The supercapacitor's input / output terminals are connected in parallel with those of the power battery, allowing for either unidirectional input or bidirectional input / output. During this period, the power battery handles the low-frequency portion of energy demand fluctuations, while the supercapacitor handles the high-frequency portion. The integrated hydrogen and battery system offers the optimal powertrain combination, meeting user demands for low vehicle costs.

[0128] In this embodiment, the DC / DC converter includes: a boost circuit and a buck circuit;

[0129] Based on the first input / output terminal and the second input / output terminal of the DC / DC converter, the input / output terminal of the integrated energy storage system and the first input / output terminal of the motor inverter are connected respectively, and the boost circuit is used to boost the electric energy output from the input / output terminal of the energy storage system and input it to the first input / output terminal of the motor inverter;

[0130] Based on the first input / output terminal and the second input / output terminal of the DC / DC converter, the input / output terminal of the integrated energy storage system and the first input / output terminal of the motor inverter are respectively connected, and the buck circuit is used to step down the electric energy of the first input / output terminal of the motor inverter and input it to the input / output terminal of the energy storage system.

[0131] Specifically, in a specific embodiment, the power battery 113 and the super capacitor 111 are boosted by the DC / DC converter 3 and transmitted to the motor 5 by the motor inverter 4 .

[0132] In another specific embodiment, a step-down circuit is used to step down the high-voltage braking current that lasts for a long time into a current that can be safely absorbed by the battery.

[0133] In this embodiment, the DC / DC converter includes: a first comparison circuit and a second comparison circuit;

[0134] a first comparison circuit, configured to determine whether a pump-up voltage value of a motor inverter bus is higher than a first preset pump-up voltage threshold;

[0135] a second comparison circuit, configured to determine whether a voltage value outputted by an input / output terminal of the energy storage system is lower than a first energy storage voltage threshold;

[0136] If the pump-up voltage value of the motor inverter bus is higher than the first preset pump-up voltage threshold, and the voltage value output by the input / output end of the energy storage system is lower than the first energy storage voltage threshold, the step-down circuit is turned on.

[0137] Specifically, when the motor brakes, the wheels push the motor to rotate, generating charge that increases the motor inverter bus voltage. Once the pump-up occurs, the energy storage system's input / output terminals no longer need to output charge. Once the pump-up disappears, the energy storage system's input / output terminals resume outputting charge, turning on the step-down circuit, and still using the energy stored in the energy storage system for driving.

[0138] In this embodiment, the DC / DC converter includes: a third comparison circuit and a discharge circuit;

[0139] a third comparison circuit, configured to determine whether the pump-up voltage value of the motor inverter bus is higher than a second preset pump-up voltage threshold;

[0140] A discharge circuit for releasing the pumped-up voltage of the motor inverter bus;

[0141] If the pump-up voltage value of the motor inverter bus is higher than the second preset pump-up voltage threshold, the discharge circuit is turned on to release the pump-up voltage of the motor inverter bus.

[0142] Specifically, if the pump-up voltage value of the motor inverter bus is higher than the second preset pump-up voltage threshold, it means that the battery or capacitor alone is no longer efficient enough to absorb electrical energy, and the braking torque is ensured in time through the discharge circuit.

[0143] In this embodiment, the DC / DC converter includes: a third comparison circuit;

[0144] a third comparison circuit, configured to determine whether a voltage value outputted by an input / output terminal of the energy storage system is lower than a second energy storage voltage threshold;

[0145] If the voltage value output by the input / output end of the energy storage system is lower than the second energy storage voltage threshold, the boost circuit is turned off. The method also includes connecting the input end of the integrated energy storage system and the input / output end of the motor inverter respectively based on the first output end and the second output end of the fuel cell, and the first output end of the fuel cell outputs current to the input end of the integrated energy storage system while outputting current to the input / output end of the motor inverter.

[0146] Specifically, the voltage value output by the input / output end of the energy storage system is lower than the second energy storage voltage threshold, indicating that the battery and capacitor voltages are insufficient and cannot continue to carry the load, and can only be used to absorb the current generated by braking.

[0147] In this embodiment, the DC / DC converter includes: a fourth comparison circuit;

[0148] a fourth comparison circuit, configured to determine whether a voltage value outputted by an input / output terminal of the energy storage system is higher than a first energy storage voltage threshold;

[0149] If the voltage value outputted by the input / output terminal of the energy storage system is higher than the first energy storage voltage threshold, the step-down circuit is turned off.

[0150] Specifically, if the voltage output from the energy storage system's input / output terminals exceeds the first energy storage voltage threshold, it indicates that the battery and capacitor voltages are saturated and unsuitable for absorbing the braking current. If braking current is generated, the pumped-up voltage of the motor inverter busbar can be released by activating a discharge circuit.

[0151] The step-down circuit is used to serve the pump-up current generated by vehicle braking to charge one side of the integrated energy storage system.

[0152] The boost circuit is used to serve the motor inverter side to consume the electric energy of the integrated energy storage system.

[0153] In this application, when the fuel cell, power battery and supercapacitor jointly supply energy, the energy input / output of the fuel cell is relatively smooth, with small fluctuations over time, and sustainable energy supply. The low-frequency part of the energy demand change is borne by the power battery, and the high-frequency part of the energy demand change can be borne by the supercapacitor.

[0154] Figure 2 This is a flow chart of an energy storage control method provided by one or more embodiments of the present invention.

[0155] like Figure 2 The energy storage control method shown is based on an integrated energy storage system and includes:

[0156] Step S1, judging whether the vehicle is in a braking state based on the motor inverter bus pump-up voltage;

[0157] Step S2: If yes, determine whether the voltage value output by the input / output terminal of the energy storage system is higher than the first energy storage voltage threshold;

[0158] Step S3: If yes, then the discharge circuit is turned on to release the pumped-up voltage of the motor inverter bus;

[0159] Step S4: If not, the step-down circuit is turned on to release the pump-up voltage of the motor inverter bus and charge the integrated energy storage system.

[0160] Specifically, in this embodiment, the supercapacitor can absorb charge in a relatively short period of time, but the capacitance of the supercapacitor is generally not set high. When the charge exceeds the absorption capacity of the power battery, it needs to be discharged using a discharge resistor or other means.

[0161] In this embodiment, it also includes:

[0162] Get brake pedal opening status information;

[0163] Generate a braking torque demand value according to the brake pedal opening state;

[0164] Determining whether the braking torque demand value is greater than a preset braking torque threshold;

[0165] If yes, then determining whether the temperature of the step-down circuit is greater than a preset temperature threshold;

[0166] If,yes, then turn off the step-down circuit;

[0167] According to closing the step-down circuit, the discharge circuit and / or the mechanical brake system are opened synchronously.

[0168] Specifically, when the temperature of the step-down circuit rises too high under conditions such as continuous downhill or continuous braking, energy recovery can be suspended at this time to consume the pump-up voltage of the motor inverter bus through discharge.

[0169] Figure 3 This is a structural diagram of an energy storage control device provided by one or more embodiments of the present invention.

[0170] like Figure 3 The energy storage control device shown includes:

[0171] A braking state judgment module is used to judge whether the vehicle is in a braking state based on the motor inverter bus pump-up voltage;

[0172] a voltage threshold comparison module, configured to, if yes, determine whether the voltage value outputted by the input / output terminal of the energy storage system is higher than a first energy storage voltage threshold;

[0173] A discharge circuit opening module is used for opening the discharge circuit to release the pumped-up voltage of the motor inverter bus if the answer is yes;

[0174] The buck circuit start module is used to, if yes, start the buck circuit to release the pump-up voltage of the motor inverter bus and charge the integrated energy storage system.

[0175] In this embodiment, it also includes:

[0176] A pedal opening status module is used to obtain brake pedal opening status information;

[0177] A braking torque demand module is used to generate a braking torque demand value according to the brake pedal opening state;

[0178] A torque threshold comparison module is used to determine whether the braking torque demand value is greater than a preset braking torque threshold;

[0179] a temperature threshold comparison module, for determining whether the temperature of the step-down circuit is greater than a preset temperature threshold if yes;

[0180] The step-down circuit closing module is used for closing the step-down circuit if the answer is yes;

[0181] The discharge circuit opening module is used to synchronously open the discharge circuit and / or the mechanical brake system according to closing the step-down circuit.

[0182] It is worth noting that although the present system / device only discloses the various modules mentioned above, it does not mean that the present system / device is limited to the above basic functional modules. Rather, what the present invention wants to express is that, based on the above basic functional modules, those skilled in the art can arbitrarily add one or more functional modules in combination with the existing technology to form an infinite number of embodiments or technical solutions. In other words, the present system is open rather than closed. Just because the present embodiment only discloses individual basic functional modules, it cannot be considered that the scope of protection of the claims of the present invention is limited to the above-disclosed basic functional modules.

[0183] Figure 6 This is a structural block diagram of an electronic device according to an energy storage control method provided by one or more embodiments of the present invention.

[0184] like Figure 6 As shown, the present application provides an electronic device, comprising: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0185] A computer program is stored in the memory. When the computer program is executed by the processor, the processor executes the steps of an energy storage control method.

[0186] The present application also provides a computer-readable storage medium storing a computer program executable by an electronic device. When the computer program runs on the electronic device, the electronic device executes the steps of an energy storage control method.

[0187] The present application also provides a vehicle platform, comprising:

[0188] Electronic equipment for implementing the steps of the energy storage control method;

[0189] a processor, wherein the processor runs a program and executes the steps of the energy storage control method based on data output by the electronic device when the program runs;

[0190] The storage medium is used to store a program, and when the program is running, the program executes the steps of the energy storage control method for the data output from the electronic device.

[0191] The communication bus mentioned in the electronic device mentioned above may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is used in the figure, but this does not mean that there is only one bus or only one type of bus.

[0192] The electronic device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory. The operating system can be any one or more computer operating systems that control electronic devices through processes, such as the Linux operating system, the Unix operating system, the Android operating system, the iOS operating system, or the Windows operating system. In the embodiments of the present invention, the electronic device can be a handheld device such as a smartphone or a tablet computer, or an electronic device such as a desktop computer or a portable computer, which is not particularly limited in the embodiments of the present invention.

[0193] The execution subject of the electronic device control in the embodiment of the present invention can be an electronic device, or a functional module in the electronic device that can call a program and execute the program. The electronic device can obtain the firmware corresponding to the storage medium. The firmware corresponding to the storage medium is provided by the supplier. The firmware corresponding to different storage media can be the same or different, and is not limited here. After the electronic device obtains the firmware corresponding to the storage medium, it can write the firmware corresponding to the storage medium into the storage medium, specifically, burn the firmware corresponding to the storage medium into the storage medium. The process of burning the firmware into the storage medium can be implemented using existing technology and will not be described in detail in the embodiment of the present invention.

[0194] The electronic device can also obtain a reset command corresponding to the storage medium. The reset command corresponding to the storage medium is provided by the supplier. The reset commands corresponding to different storage media can be the same or different, and are not limited here.

[0195] In this case, the storage medium of the electronic device is a storage medium in which the corresponding firmware is written. The electronic device can respond to the reset command corresponding to the storage medium in which the corresponding firmware is written, thereby resetting the storage medium in which the corresponding firmware is written according to the reset command corresponding to the storage medium. The process of resetting the storage medium according to the reset command can be implemented in the existing technology and will not be described in detail in the embodiments of the present invention.

[0196] For the convenience of description, the above devices are described as various units and modules according to their functions. Of course, when implementing this application, the functions of each unit and module can be implemented in the same or multiple software and / or hardware.

[0197] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art in the art to which the present invention pertains. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with those in the context of the prior art and, unless specifically defined, will not be interpreted in an idealized or overly formal sense.

[0198] For simplicity of description, the method embodiments are described as a series of actions. However, those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because certain steps can be performed in other orders or simultaneously according to the embodiments of the present invention. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0199] Through the description of the above embodiments, it can be seen that those skilled in the art can clearly understand that the present application can be implemented by means of software plus the necessary general hardware platform. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present application or certain parts of the embodiments.

[0200] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated energy storage system, characterized in that: The integrated energy storage system includes: On-load modules, load modules and bidirectional conversion modules; The load module includes a transmission; The on-load module includes a fuel cell, an integrated energy storage system, and a DC / DC converter; The bidirectional conversion module includes a motor inverter and a motor; On-load module, used for energy storage and driving load modules; A load module, used for outputting or inputting mechanical torque on the wheel side; Bidirectional conversion module, used for energy conversion between the load module and the load module.

2. The integrated energy storage system according to claim 1, characterized in that: Also includes: The motor inverter includes a first input / output terminal and a second input / output terminal; The integrated energy storage system includes an input end and an input / output end; The fuel cell comprises a first output end and a second output end; The first output terminal and the second output terminal of the fuel cell are connected to the input terminal of the integrated energy storage system and the input / output terminal of the motor inverter respectively; A DC / DC converter including a first input / output terminal and a second input / output terminal; A first input / output terminal and a second input / output terminal of the DC / DC converter are connected to an input / output terminal of the integrated energy storage system and a first input / output terminal of the motor inverter, respectively; The motor includes an electrical input terminal and a torque output terminal; The transmission includes an input end and an output end; a second input / output terminal of the motor inverter, connected to an electrical input terminal of the motor; The torque output end of the motor is connected to the input end of the transmission; The output end of the transmission, the torque is connected to the vehicle side.

3. The integrated energy storage system according to claim 2, characterized in that: The integrated energy storage system includes: a power battery and a supercapacitor; The power battery includes, input / output terminals; The input / output terminal of the power battery is used as the input terminal of the integrated energy storage system and is set as a unidirectional input; The input / output terminal of the power battery is used for the input / output terminal of the integrated energy storage system and is set to bidirectional input / output; The supercapacitor includes, input / output terminals; The input / output terminal of the supercapacitor is connected in parallel with the input / output terminal of the power battery and is synchronously set to unidirectional input or bidirectional input / output.

4. The integrated energy storage system according to claim 3, characterized in that: The DC / DC converter includes: a boost circuit and a buck circuit; Based on the first input / output terminal and the second input / output terminal of the DC / DC converter, the input / output terminal of the integrated energy storage system and the first input / output terminal of the motor inverter are connected respectively, and the boost circuit is used to boost the electric energy output from the input / output terminal of the energy storage system and input it to the first input / output terminal of the motor inverter; Based on the first input / output terminal and the second input / output terminal of the DC / DC converter, the input / output terminal of the integrated energy storage system and the first input / output terminal of the motor inverter are respectively connected, and the buck circuit is used to step down the electric energy of the first input / output terminal of the motor inverter and input it to the input / output terminal of the energy storage system.

5. The integrated energy storage system according to claim 4, characterized in that: The DC / DC converter includes: a first comparison circuit and a second comparison circuit; a first comparison circuit, configured to determine whether a pump-up voltage value of a motor inverter bus is higher than a first preset pump-up voltage threshold; a second comparison circuit, configured to determine whether a voltage value outputted by an input / output terminal of the energy storage system is lower than a first energy storage voltage threshold; If the pump-up voltage value of the motor inverter bus is higher than the first preset pump-up voltage threshold, and the voltage value output by the input / output end of the energy storage system is lower than the first energy storage voltage threshold, the step-down circuit is turned on.

6. The integrated energy storage system according to claim 5, characterized in that: The DC / DC converter includes: a third comparison circuit and a discharge circuit; a third comparison circuit, configured to determine whether the pump-up voltage value of the motor inverter bus is higher than a second preset pump-up voltage threshold; A discharge circuit for releasing the pumped-up voltage of the motor inverter bus; If the pump-up voltage value of the motor inverter bus is higher than the second preset pump-up voltage threshold, the discharge circuit is turned on to release the pump-up voltage of the motor inverter bus.

7. The integrated energy storage system according to claim 6, characterized in that: The DC / DC converter includes: a third comparison circuit; a third comparison circuit, configured to determine whether a voltage value outputted by an input / output terminal of the energy storage system is lower than a second energy storage voltage threshold; If the voltage value output by the input / output end of the energy storage system is lower than the second energy storage voltage threshold, the boost circuit is turned off. The method also includes connecting the input end of the integrated energy storage system and the input / output end of the motor inverter respectively based on the first output end and the second output end of the fuel cell, and the first output end of the fuel cell outputs current to the input end of the integrated energy storage system while outputting current to the input / output end of the motor inverter.

8. The integrated energy storage system according to claim 7, characterized in that: The DC / DC converter includes: a fourth comparison circuit; a fourth comparison circuit, configured to determine whether a voltage value outputted by an input / output terminal of the energy storage system is higher than a first energy storage voltage threshold; If the voltage value outputted by the input / output terminal of the energy storage system is higher than the first energy storage voltage threshold, the step-down circuit is turned off.

9. A method for controlling energy storage, characterized in that: Based on the integrated energy storage system according to any one of claims 1 to 8, the energy storage control method includes: Based on the motor inverter busbar pump-up voltage, determine whether the vehicle is in a braking state; If yes, then determining whether the voltage value outputted by the input / output terminal of the energy storage system is higher than the first energy storage voltage threshold; If yes, the discharge circuit is turned on to release the pumped-up voltage of the motor inverter bus; If not, the step-down circuit is turned on to release the pumped-up voltage of the motor inverter bus and charge the integrated energy storage system.

10. The energy storage control method according to claim 9, characterized in that: Also includes: Get brake pedal opening status information; Generate a braking torque demand value according to the brake pedal opening state; Determining whether the braking torque demand value is greater than a preset braking torque threshold; If yes, then determining whether the temperature of the step-down circuit is greater than a preset temperature threshold; If,yes, then turn off the step-down circuit; According to closing the step-down circuit, the discharge circuit and / or the mechanical brake system are opened synchronously.

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