New energy vehicle deceleration braking method, system, device, equipment and medium

Abstract

The application discloses a new energy automobile deceleration brake method, system, device, equipment and medium, and the method comprises the steps that when the automobile is decelerated, the state of the battery is acquired; if the state is that the battery capacity is greater than or equal to the preset capacity, a first control instruction is generated; based on the first control instruction, the high-voltage auxiliary drive controller of the automobile is controlled, and the electric energy generated during deceleration is transmitted to the water heating equipment of the automobile to dissipate the electric energy. The application converts the recovered energy during automobile deceleration into electric energy, which can be used for battery charging and automobile energy supply, increases the utilization path of the recovered energy, and improves the safety during automobile deceleration.

Description

Technical Field

[0001] This application relates to the automotive field, and more particularly to a method, system, device, equipment, and medium for slow braking of a new energy vehicle. Background Technology

[0002] Traditional fuel-powered commercial vehicles employ auxiliary braking equipment such as engine braking, exhaust-assisted braking, and electric eddy current retarder braking to consume engine torque or utilize engine counter-dragging torque, thereby controlling the vehicle's speed when descending long slopes and ensuring vehicle safety.

[0003] However, because new energy vehicles do not have engines, they cannot utilize engine drag torque for assisted braking. To improve the fuel economy of new energy vehicles, energy recovery is typically used for braking. However, when using energy recovery for braking, the battery cannot be recharged when its state of charge exceeds a threshold, causing the vehicle to lose its braking function and affecting overall vehicle safety. Summary of the Invention

[0004] The main objective of this application is to provide a method, system, device, equipment, and medium for slow braking of new energy vehicles, aiming to solve the existing technical problems of how to improve the safety of new energy vehicles during slow braking.

[0005] To achieve the above objectives, this application provides a method for slow braking of a new energy vehicle, the method comprising:

[0006] The battery status is acquired when the car is undergoing slow braking.

[0007] If the state is that the battery charge is greater than or equal to a preset charge, then a first control command is generated;

[0008] Based on the first control command, the high-voltage auxiliary drive controller of the vehicle is controlled to transmit the electrical energy generated during slow braking to the water heating equipment of the vehicle to dissipate the electrical energy.

[0009] For example, the step of controlling the high-voltage auxiliary drive controller of the vehicle based on the first control command to transmit the electrical energy generated during slow braking to the water heating device of the vehicle to dissipate the electrical energy includes:

[0010] Control the water heating equipment to heat the liquid in the circulation loop;

[0011] Obtain the status of the devices in the vehicle;

[0012] If the device in the vehicle is in an energy-consuming state, the water pump is controlled to deliver the liquid to the liquid circuit of the device for energy dissipation.

[0013] If the equipment in the vehicle is in an unpowered state, then the cooling system is controlled to cool the liquid.

[0014] For example, if the device in the vehicle is in an unpowered state, controlling the cooling device to cool the liquid includes:

[0015] If the equipment in the vehicle is in an unpowered state, then the temperature of the liquid is obtained;

[0016] Compare the temperature with the magnitude of the first preset temperature and the second preset temperature;

[0017] If the temperature is greater than or equal to the second preset temperature and less than the first preset temperature, then the water pump is controlled to cool the liquid.

[0018] If the temperature is greater than or equal to the first preset temperature, then control the electronic fan to cool the liquid.

[0019] For example, obtaining the battery status when the vehicle is undergoing slow braking includes:

[0020] The battery's charge and temperature are acquired when the vehicle is undergoing slow braking.

[0021] If the battery charge is less than the preset charge and the battery temperature is less than the third preset temperature, then the battery is determined to be in a state where it can be charged.

[0022] If not, then the battery is determined to be in a state where it cannot be charged.

[0023] For example, after determining that the battery is in a chargeable state if the battery power is less than the preset power and the battery temperature is less than the third preset temperature, the process includes:

[0024] Output the second control command;

[0025] Based on the second control command, the high-voltage auxiliary drive is controlled to deliver the electrical energy generated during slow braking to the battery for charging.

[0026] For example, to achieve the above objectives, this application also provides an energy conversion system based on slow braking, characterized in that the system includes a motor, a battery, and a water heating device:

[0027] The motor is electrically connected to the battery and the water heating device respectively, and is used to convert the recovered energy into electrical energy when the car is braking slowly.

[0028] The battery is used to: receive electrical energy generated during the slow braking;

[0029] The water heating device is used to heat the liquid when the state is one in which charging is not possible.

[0030] For example, the system also includes a high-voltage auxiliary drive controller, a thermal management controller, a water pump, a cooling device, and a circulation loop:

[0031] The high-voltage auxiliary drive controller is electrically connected to the motor, the battery and the water heating device respectively, and is used to: transmit the electrical energy generated by the motor to the battery or the water heating device;

[0032] The thermal management controller is used to: control the heat dissipation equipment to cool the liquid in the circulation loop;

[0033] The water pump is used to: drive the liquid through the heat dissipation device;

[0034] The heat dissipation device is used to cool the liquid, wherein the heat dissipation device includes a radiator and an electric fan;

[0035] The thermal management controller is electrically connected to the water pump and the electronic fan respectively;

[0036] The circulation loop connects the water heating device, the water pump, and the radiator.

[0037] For example, to achieve the above objectives, this application also provides a retarding braking device for a new energy vehicle, the retarding braking device for the new energy vehicle comprising:

[0038] The acquisition module is used to acquire the battery status when the car is undergoing slow braking;

[0039] The generation module is used to generate a first control command if the state is that the battery charge is greater than or equal to a preset charge.

[0040] The dissipation module is used to control the high-voltage auxiliary drive controller of the vehicle based on the first control command, and to transmit the electrical energy generated during slow braking to the water heating equipment of the vehicle to dissipate the electrical energy.

[0041] For example, to achieve the above objectives, this application also provides a slow-speed braking device for a new energy vehicle. The slow-speed braking device for a new energy vehicle includes a memory, a processor, and a slow-speed braking program for a new energy vehicle stored in the memory and executable on the processor. When the slow-speed braking program for a new energy vehicle is executed by the processor, it implements the steps of the slow-speed braking method for a new energy vehicle as described above.

[0042] For example, to achieve the above objectives, this application also provides a computer-readable storage medium storing a slow-speed braking program for a new energy vehicle, wherein when the slow-speed braking program for the new energy vehicle is executed by a processor, it implements the steps of the slow-speed braking method for a new energy vehicle as described above.

[0043] Compared to existing technologies where energy recovery during slow braking only stores the recovered energy as electrical energy in the battery, leading to a loss of braking ability when the battery reaches a certain charge threshold, this application addresses this issue by determining whether the battery can be charged during slow braking; if not, it controls the motor to dissipate the recovered energy. Furthermore, when slow braking cannot convert the recovered energy into battery power, this application utilizes the recovered energy for vehicle power supply, thus improving safety during slow braking by increasing the ways in which the recovered energy is utilized. Attached Figure Description

[0044] Figure 1 This is a flowchart illustrating the first embodiment of the slow braking method for new energy vehicles in this application.

[0045] Figure 2 This is a schematic diagram of the structure of the first embodiment of the slow braking method for new energy vehicles in this application;

[0046] Figure 3 This is a schematic diagram of the hardware operating environment involved in the embodiments of this application.

[0047] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0048] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0049] This application provides a method for slow braking of a new energy vehicle, referring to... Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the slow braking method for new energy vehicles according to this application.

[0050] This application provides an embodiment of a slow braking method for new energy vehicles. It should be noted that although the logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order. For ease of description, the following description of the various steps of the slow braking method for new energy vehicles omits the execution entity. The slow braking method for new energy vehicles includes:

[0051] Step S10: Obtain the battery status while the car is undergoing slow braking.

[0052] In this embodiment, as Figure 2 As shown, 201 is the retarder switch, 202 is the VCU (Vehicle Communication Unit), 203 is the high-voltage auxiliary drive controller, 204 is the MCU (Motor Control Unit), 205 is the thermal management controller, 206 is the water heating device, 207 is the heat-requiring device, 208 is the water pump, 209 is the heat dissipation device, 2091 is the electric fan, 2092 is the radiator, and 210 is the battery. The MCU is electrically connected to both the high-voltage auxiliary drive controller and the motor (not shown in the figure). The retarder switch controls the vehicle's retarder braking by opening and closing it.

[0053] For example, gradual braking is the process of gradually reducing the speed of a vehicle while it is in motion, and, if necessary, using braking to gradually reduce the speed until the vehicle comes to a complete stop. When a car is descending a long slope, it needs to be in a state of gradual braking for an extended period of time to ensure vehicle safety. Figure 2 As shown, when a car brakes slowly, the recovered mechanical energy can be converted into electrical energy and stored in the battery. The stored electrical energy can then be converted back into mechanical energy to power the car during subsequent driving. If it is determined that the battery can be recharged, the recovered energy is prioritized for charging the battery. If it is determined that the battery cannot be recharged, the recovered energy is used for other energy-consuming parts of the car.

[0054] For example, obtaining the battery status when the vehicle is undergoing slow braking includes:

[0055] In this embodiment, the battery status includes the battery's charge level and battery temperature.

[0056] Step a: When the car is braking slowly, the battery charge and temperature are measured.

[0057] In this embodiment, the battery temperature is acquired in real time using a temperature detection device; the battery charge is acquired in real time using a charge detection device, which includes a current sampling circuit, a signal processing circuit, and an A / D sampling circuit. The current sampling circuit samples the current in real time and converts it into an electrical signal output proportional to the sampled current. After filtering, the signal flows into the signal processing circuit, which amplifies the signal and clamps the output using diodes. Finally, an operational amplifier processes the signal to obtain the input value from the A / D sampling.

[0058] The output voltage is positively correlated with the battery charge; that is, the higher the battery charge, the higher the output voltage, and vice versa. For example, when the output voltage is greater than or equal to 10V, the battery is fully charged; when the output voltage is 8V, the battery has 80% charge remaining; and when the output voltage is 5V, the battery has 50% charge remaining.

[0059] Step b: If the battery charge is less than the preset charge and the battery temperature is less than the third preset temperature, then the battery is determined to be in a state where it can be charged.

[0060] In this embodiment, charging will stop when the battery level is greater than or equal to a preset level to ensure battery safety and extend battery life. The preset level can be set as needed, and this embodiment does not impose a specific limitation. For example, the preset level can be 85%, 90%, 95% of the initial battery level, etc.

[0061] For example, when the battery temperature is greater than or equal to a preset temperature, charging will stop to ensure battery safety and extend battery life. The preset temperature can be set as needed, and this embodiment does not impose a specific limitation. For example, the preset temperature can be 80℃, 85℃, 90℃, etc.

[0062] For example, after determining that the battery is in a chargeable state if the battery power is less than the preset power and the battery temperature is less than the third preset temperature, the process includes:

[0063] Step b1: Output the second control command;

[0064] Step b2: Based on the second control command, control the high-voltage auxiliary drive to deliver the electrical energy generated during slow braking to the battery for charging.

[0065] In this embodiment, when the battery is in a rechargeable state, the recovered mechanical energy is preferentially converted into electrical energy from the battery, and the VCU generates a second control command. Upon receiving the second control command, the high-voltage auxiliary drive delivers the electrical energy generated during slow braking to the battery.

[0066] Step c: If not, then determine that the battery is in a state where it cannot be charged.

[0067] In this embodiment, the states in which the battery cannot be charged include: the battery charge is greater than or equal to a preset charge and the battery temperature is less than a preset temperature; the battery charge is less than a preset charge and the battery temperature is greater than or equal to a preset temperature; and the battery charge is greater than or equal to a preset charge and the battery temperature is greater than or equal to a preset temperature.

[0068] Step S20: If the state is that the battery charge is greater than or equal to a preset charge, then generate a first control command.

[0069] In this embodiment, when the battery charge is greater than or equal to the preset charge, the battery is determined to be in a state where it cannot be charged. Then, the VCU generates a first control command to control the high-voltage auxiliary drive controller to deliver the electrical energy generated during slow braking to the water heating equipment of the vehicle.

[0070] For example, if the state is that the battery's charge is greater than or equal to a preset charge, then after generating the first control command, the following steps are included:

[0071] Step d: Obtain the temperature of the air inside the car;

[0072] Step e: If the temperature of the air is greater than or equal to the fourth preset temperature, then control the refrigeration equipment of the car to perform refrigeration.

[0073] In this embodiment, the temperature of the air inside the vehicle is acquired in real time. If the air temperature is greater than or equal to a third preset temperature, a third control command is output through the VCU. This third control command is used to control the high-voltage auxiliary drive controller. When the high-voltage auxiliary drive controller receives the third control command, it transmits the electrical energy generated during slow braking to the vehicle's cooling system for cooling, thereby reducing the temperature inside the vehicle. For example, in summer, the temperature inside the vehicle is high. When the temperature inside the vehicle is detected to be higher than 25°C, to ensure the user's driving comfort, the recovered energy is used for vehicle cooling to lower the interior temperature.

[0074] For example, the third preset temperature can be set as needed, and this embodiment does not impose a specific limitation. For instance, the third preset temperature can be 28℃, 30℃, 35℃, etc.

[0075] This application aims to enable vehicles to continuously perform slow braking throughout the year. When the ambient temperature is high and there are few heat-requiring devices in the vehicle, the recovered energy can be converted into electricity and used for cooling inside the vehicle, increasing the ways to utilize the recovered energy and improving the safety of the vehicle during slow braking.

[0076] Step S30, based on the first control command, controls the high-voltage auxiliary drive controller of the vehicle to transmit the electrical energy generated during slow braking to the water heating device of the vehicle to dissipate the electrical energy.

[0077] In this embodiment, if the battery charge is detected to be greater than or equal to the preset charge, i.e., the recovered energy cannot be stored through the battery, the recovered energy will be used for the vehicle's energy-consuming equipment in order to ensure that the vehicle's slow braking function can be used normally.

[0078] For example, the step of controlling the high-voltage auxiliary drive controller of the vehicle based on the first control command to transmit the electrical energy generated during slow braking to the water heating device of the vehicle to dissipate the electrical energy includes:

[0079] Step f: Control the water heating device to heat the liquid in the circulation loop.

[0080] In this embodiment, when the battery charge is detected to be greater than or equal to a preset charge, a first control command is output through the VCU. This first control command is used to control the high-voltage auxiliary drive controller. When the high-voltage auxiliary drive controller receives the first command, it controls the heater to heat the liquid in the circulation loop. The liquid is typically water.

[0081] Step g: Obtain the status of the equipment in the vehicle.

[0082] In this embodiment, a thermal management controller detects whether there are devices in the vehicle that consume heat energy. If such devices are detected, liquid is supplied to the liquid circulation loop of the device to provide the required heat energy. If no heat-consuming devices are detected, the liquid in the circulation loop needs to be cooled in a timely manner to ensure that it does not pose a risk of thermal damage to the vehicle and to continuously absorb and recover energy. The heat dissipation equipment includes a radiator and an electric fan. The cooling methods include: using a water pump to drive water in the circulation loop to circulate through the radiator for natural cooling of the liquid; and using an electric fan to force heat dissipation when the liquid temperature is too high.

[0083] Examples of energy-consuming devices include: battery heating devices, warm air heating devices, etc.

[0084] In step h, if the device in the vehicle is in an energy-consuming state, the water pump is controlled to deliver the liquid to the liquid circuit of the device for energy dissipation.

[0085] In this embodiment, if a device requiring heat is detected in the vehicle, a fourth control command is output through the VCU. This fourth control command is used to control the thermal management controller. When the thermal management controller receives the fourth command, it controls the water pump to drive the heated liquid to circulate. When the liquid circulates to the device, it provides the heat energy required by the device. For example, when the water pump drives the heated liquid to the battery heating device, the heat energy of the liquid is used to heat the battery; when the water pump drives the heated liquid to the heater unit, the heat energy of the liquid is used to heat the liquid in the heater unit.

[0086] Step i: If the device in the vehicle is in an unpowered state, then control the heat dissipation device to cool the liquid.

[0087] In this embodiment, if no heat-requiring equipment is detected in the car, in order to ensure the safety of the car and to continue slow braking, the heat of the liquid in the circulation loop needs to be dissipated in time and the liquid needs to be cooled so that it can continuously absorb the energy absorbed during slow braking.

[0088] For example, if the device in the vehicle is in an unpowered state, controlling the cooling device to cool the liquid includes:

[0089] Step i1: If the device in the vehicle is in an unpowered state, then obtain the temperature of the liquid;

[0090] In this embodiment, when no heat-consuming equipment is detected in the vehicle, the liquid in the circulation loop needs to be cooled by a heat dissipation device. When the liquid temperature in the circulation loop is high, it can be naturally cooled by the heat sink in the heat dissipation device; when the liquid temperature in the circulation loop is too high, natural cooling by the heat sink is no longer sufficient to dissipate the heat in time, so forced cooling is performed by an electric fan to ensure that the liquid in the circulation loop is kept within a suitable temperature range.

[0091] Step i2: Compare the temperature with the first preset temperature and the second preset temperature.

[0092] In this embodiment, the first temperature of the liquid in the circulation loop is detected in real time, and the obtained first temperature is compared with a first preset temperature and a second preset temperature in real time. Based on the comparison result of the first temperature and the first and second preset temperatures, the VCU outputs corresponding control commands to adjust the temperature of the liquid in the circulation loop so that it can continuously absorb and recover energy during the slow braking process of the vehicle.

[0093] For example, the first preset temperature and the second preset temperature can be set as needed, and this embodiment does not impose specific limitations. The value of the first preset temperature is greater than the value of the second preset temperature. For example, the first preset temperature may be 55℃, 60℃, 65℃, etc., and the second preset temperature may be 40℃, 45℃, 50℃, etc.

[0094] Step i3: If the temperature is greater than or equal to the second preset temperature and less than the first preset temperature, then control the water pump to cool the liquid.

[0095] In this embodiment, when the first temperature is greater than or equal to the second preset temperature but less than the first preset temperature, a fifth control command is output through the VCU. This fifth control command is used to control the thermal management controller. When the thermal management controller receives the fifth control command, it controls the water pump. The water pump circulates the liquid in the circulation loop. When the liquid passes through the radiator in the circulation loop, it is naturally cooled by the radiator, thus reducing the liquid temperature. For example, if the first preset temperature is 65°C and the second preset temperature is 40°C, and the first temperature of the liquid in the circulation loop is detected to be 50°C, heat dissipation is needed. Therefore, the VCU outputs a control command to drive the water pump, causing the liquid in the circulation loop to circulate and dissipate heat through the radiator during the circulation process.

[0096] If the first temperature of the liquid in the circulation loop is lower than the second preset temperature, the liquid in the circulation loop can be continuously heated by the heater, and there is no need to dissipate heat from the liquid in the circulation loop.

[0097] Step i4: If the temperature is greater than or equal to the first preset temperature, then control the electronic fan to cool the liquid.

[0098] In this embodiment, when the first temperature of the liquid in the circulation loop exceeds the first preset temperature, i.e., the temperature of the liquid in the circulation loop is too high, natural air cooling is no longer sufficient to meet the heat dissipation requirements, posing a risk of heat damage to the vehicle. Therefore, a sixth control command is output through the VCU, which is used to control the thermal management controller. When the thermal management controller receives the sixth control command, it controls the drive electric fan to dissipate heat from the liquid in the circulation loop, controlling the liquid temperature and ensuring the safety of the vehicle.

[0099] Compared to existing technologies where energy recovery during slow braking only stores the recovered energy as electrical energy in the battery, leading to a loss of braking ability when the battery reaches a certain charge threshold, this application addresses this issue by determining whether the battery can be charged during slow braking; if not, it controls the motor to dissipate the recovered energy. Furthermore, when slow braking cannot convert the recovered energy into battery power, this application utilizes the recovered energy for vehicle power supply, thus improving safety during slow braking by increasing the ways in which the recovered energy is utilized.

[0100] For example, this application also provides a retarding braking device for a new energy vehicle, the retarding braking device for the new energy vehicle comprising:

[0101] The acquisition module is used to acquire the battery status when the car is undergoing slow braking;

[0102] The generation module is used to generate a first control command if the state is that the battery charge is greater than or equal to a preset charge.

[0103] The dissipation module is used to control the high-voltage auxiliary drive controller of the vehicle based on the first control command, and to transmit the electrical energy generated during slow braking to the water heating equipment of the vehicle to dissipate the electrical energy.

[0104] For example, the acquisition module includes:

[0105] The first acquisition submodule is used to acquire the battery's charge and temperature when the car is undergoing slow braking.

[0106] The first determining submodule is used to determine that the battery is in a state where it can be charged if the power is less than the preset power and the temperature of the battery is less than the third preset temperature.

[0107] The second determining submodule is used to determine that the battery is in a state where it cannot be charged if no.

[0108] For example, the acquisition module further includes:

[0109] The output submodule is used to output the second control command;

[0110] The first control submodule is used to control the high-voltage auxiliary drive to deliver the electrical energy generated during slow braking to the battery based on the second control command, so as to charge the battery.

[0111] For example, the dissipation module includes:

[0112] The second control submodule is used to control the heating of the liquid in the circulating loop of the water heating equipment.

[0113] The second acquisition submodule is used to acquire the status of the devices in the vehicle;

[0114] The third control submodule is used to control the water pump to deliver the liquid to the liquid circuit of the device if the device in the vehicle is in an energy-consuming state, so that the device can dissipate energy.

[0115] The fourth control submodule is used to control the heat dissipation device to cool the liquid if the device in the vehicle is in an unpowered state.

[0116] For example, the fourth control submodule includes:

[0117] The acquisition unit is used to acquire the temperature of the liquid if the device in the vehicle is in an unpowered state.

[0118] The comparison unit is used to compare the temperature with the magnitude of the first preset temperature and the second preset temperature;

[0119] A first control unit is configured to control the water pump to cool the liquid if the temperature is greater than or equal to a second preset temperature and less than a first preset temperature.

[0120] The second control unit is used to control an electric fan to cool the liquid if the temperature is greater than or equal to a first preset temperature.

[0121] The specific implementation method of the slow braking device for new energy vehicles in this application is basically the same as the embodiments of the slow braking method for new energy vehicles described above, and will not be repeated here.

[0122] For example, to achieve the above objectives, this application also provides an energy conversion system based on slow braking, characterized in that the system includes a motor, a battery, and a water heating device:

[0123] The motor is electrically connected to the battery and the water heating device respectively, and is used to convert the recovered energy into electrical energy when the car is braking slowly.

[0124] The battery is used to: receive electrical energy generated during the slow braking;

[0125] The water heating device is used to heat the liquid when the state is one in which charging is not possible.

[0126] For example, the system also includes a high-voltage auxiliary drive controller, a thermal management controller, a water pump, a cooling device, and a circulation loop:

[0127] The high-voltage auxiliary drive controller is electrically connected to the motor, the battery and the water heating device respectively, and is used to: transmit the electrical energy generated by the motor to the battery or the water heating device;

[0128] The thermal management controller is used to: control the heat dissipation equipment to cool the liquid in the circulation loop;

[0129] The water pump is used to: drive the liquid through the heat dissipation device;

[0130] The heat dissipation device is used to cool the liquid, wherein the heat dissipation device includes a radiator and an electric fan;

[0131] The thermal management controller is electrically connected to the water pump and the electronic fan respectively;

[0132] The circulation loop connects the water heating device, the water pump, and the radiator.

[0133] The specific implementation of the energy conversion system based on slow braking in this application is basically the same as the embodiments of the slow braking method for new energy vehicles described above, and will not be repeated here.

[0134] In addition, this application also provides a slow-speed braking device for new energy vehicles. For example... Figure 3 As shown, Figure 3 This is a schematic diagram of the hardware operating environment involved in the embodiments of this application (excluding the main controller, slave controller and cellular network module mentioned above).

[0135] For example, Figure 3 This can be a schematic diagram of the hardware operating environment of the slow braking device for new energy vehicles.

[0136] like Figure 3 As shown, the slow braking device for the new energy vehicle may include a processor 301, a communication interface 302, a memory 303, and a communication bus 304. The processor 301, the communication interface 302, and the memory 303 communicate with each other through the communication bus 304. The memory 303 is used to store computer programs. When the processor 301 executes the program stored in the memory 303, it implements the steps of the slow braking method for the new energy vehicle.

[0137] The communication bus 304 mentioned in the aforementioned retarding braking device for new energy vehicles can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus 304 can be divided into address bus, data bus, and control bus, etc. For ease of illustration, it is represented by only one thick line in the figure, but this does not indicate that there is only one bus or one type of bus.

[0138] The communication interface 302 is used for communication between the retarding braking device of the above-mentioned new energy vehicle and other devices.

[0139] The memory 303 may include random access memory (RMD) or non-volatile memory (NM), such as at least one disk storage device. Optionally, the memory 303 may also be at least one storage device located remotely from the aforementioned processor 301.

[0140] The processor 301 mentioned above can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0141] The specific implementation method of the slow braking device for new energy vehicles in this application is basically the same as the embodiments of the slow braking method for new energy vehicles described above, and will not be repeated here.

[0142] Furthermore, this application also proposes a computer-readable storage medium storing a slow braking program for a new energy vehicle. When the slow braking program for the new energy vehicle is executed by a processor, it implements the steps of the slow braking method for the new energy vehicle as described above.

[0143] The specific implementation of the computer-readable storage medium in this application is basically the same as the embodiments of the slow braking method for new energy vehicles described above, and will not be repeated here.

[0144] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0145] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0146] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, device, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0147] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for retarding braking of a new energy vehicle, characterized in that, The method comprises: acquiring the state of the battery when the vehicle is performing the regenerative braking; if the state is that the power of the battery is greater than or equal to the preset power, generating a first control instruction; based on the first control instruction, controlling the high-voltage auxiliary drive controller of the vehicle to transmit the electric energy generated during the regenerative braking to the over-water heating device of the vehicle to dissipate the electric energy; the step of controlling the over-water heating device to heat the liquid in the circulating loop; acquiring the state of the device in the vehicle; if the state of the device in the vehicle is the energy consumption state, controlling the water pump to deliver the liquid to the liquid circuit of the device for energy dissipation of the device; if the state of the device in the vehicle is the non-energy consumption state, controlling the heat dissipation device to cool the liquid; if the state of the device in the vehicle is the non-energy consumption state, acquiring the temperature of the liquid; comparing the temperature with the first preset temperature and the second preset temperature; if the temperature is greater than or equal to the second preset temperature and less than the first preset temperature, controlling the water pump to cool the liquid; if the temperature is greater than or equal to the first preset temperature, controlling the electronic fan to cool the liquid. the step of acquiring the state of the battery when the vehicle is performing the regenerative braking comprises: acquiring the power and the temperature of the battery when the vehicle is performing the regenerative braking; 2. The method of claim 1, wherein, if the power is less than the preset power and the temperature of the battery is less than the third preset temperature, determining that the battery is in the state capable of being charged; if not, determining that the battery is in the state incapable of being charged. after the step of determining that the battery is in the state capable of being charged, comprising: outputting a second control instruction; 3. The method of claim 2, wherein, based on the second control instruction, controlling the high-voltage auxiliary drive to transmit the electric energy generated during the regenerative braking to the battery for charging of the battery. The system is used to implement the regenerative braking method of the new energy vehicle as claimed in claim 1, and the system comprises a motor, a high-voltage auxiliary drive controller, a battery, an over-water heating device, a thermal management controller, a water pump, a heat dissipation device, and a circulating loop: the motor is electrically connected with the battery and the over-water heating device respectively, and is used to convert the recovered energy into electric energy when the vehicle is performing the regenerative braking; 4. An energy conversion system based on retarding braking, characterized in that, the high-voltage auxiliary drive controller is electrically connected with the motor, the battery, and the over-water heating device respectively, and is used to transmit the electric energy generated by the motor to the battery or the over-water heating device; the battery is used to receive the electric energy generated during the regenerative braking; the over-water heating device is used to heat the liquid when the state is the state incapable of charging; the thermal management controller is used to control the heat dissipation device to cool the liquid in the circulating loop; ​ ​ The water pump is configured to drive the liquid through a heat dissipation device; The heat dissipation device is configured to cool the liquid, wherein the heat dissipation device comprises a radiator and an electronic fan; The thermal management controller is electrically connected to the water pump and the electronic fan, respectively; The circulation loop is connected to the water heating device, the water pump and the radiator.

5. A retarding brake device for a new energy vehicle, characterized in that, The device comprises: An acquisition module configured to acquire a state of a battery when the vehicle is performing a regenerative braking; A generation module configured to generate a first control instruction if the state is a state in which the battery has an amount of electricity greater than or equal to a preset amount of electricity; A dissipation module configured to control, based on the first control instruction, a high-voltage auxiliary drive controller of the vehicle to deliver electrical energy generated during the regenerative braking to a water heating device of the vehicle to dissipate the electrical energy; The dissipation module is further configured to control the water heating device to heat a liquid in a circulation loop, acquire a state of a device in the vehicle, and control, if the state of the device in the vehicle is an energy dissipation state, a water pump to deliver the liquid to a liquid loop of the device for energy dissipation by the device, and control, if the state of the device in the vehicle is an energy non-dissipation state, a heat dissipation device to cool the liquid; An acquisition unit configured to acquire a temperature of the liquid if the state of the device in the vehicle is the energy non-dissipation state; A comparison unit configured to compare the temperature with a first preset temperature and a second preset temperature; A first control unit configured to control, if the temperature is greater than or equal to the second preset temperature and less than the first preset temperature, the water pump to cool the liquid; A second control unit configured to control, if the temperature is greater than or equal to the first preset temperature, an electronic fan to cool the liquid.

6. A regenerative braking apparatus for a new energy vehicle, characterized by comprising: The new energy vehicle regenerative braking device comprises a memory, a processor, and a new energy vehicle regenerative braking program stored on the memory and executable on the processor, and the new energy vehicle regenerative braking program, when executed by the processor, implements the steps of the new energy vehicle regenerative braking method according to any one of claims 1 to 3.

7. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a new energy vehicle regenerative braking program, and the new energy vehicle regenerative braking program, when executed by the processor, implements the steps of the new energy vehicle regenerative braking method according to any one of claims 1 to 3.

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