Automobile start-stop and energy recovery system and automobile

Abstract

The utility model provides an automobile start-stop and energy recovery system and an automobile, the automobile start-stop and energy recovery system comprises a microcontroller, a super capacitor module, a storage battery, a starter, an electric energy conversion module and a switch module, the storage battery and the super capacitor module are respectively connected with the starter, the switch module is connected between the super-capacitor module and the storage battery, the storage battery is connected with the super-capacitor module, the electric energy conversion module is connected between the storage battery and the super-capacitor module, and the microcontroller is respectively connected with the super-capacitor module, the storage battery and the electric energy conversion module. The super-capacitor module is introduced to provide energy for the starter, the defect that a traditional storage battery is low in electric energy density can be overcome, the performance of the starter is improved, and the rapid and reliable starting process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile drive systems, in particular to an automobile start-stop and energy recovery system and an automobile. Background Art

[0002] As an indispensable means of transportation in people's daily lives, the stability and efficiency of the starting system of cars are crucial to vehicle performance and user experience. The reliability of the starting system directly affects the normal starting and operation of the vehicle, while the efficiency determines the fuel utilization and energy management of the vehicle.

[0003] In the related art, the traditional starter system usually uses a battery as the main power supply device to drive the starter and start the engine. The battery of a car is generally used to store electrical energy for use by the electrical equipment of the entire car. Most car batteries are lithium-ion batteries, and some cars also use nickel-metal hydride batteries or lithium iron phosphate batteries. However, whether it is a lithium-ion battery, a nickel-metal hydride battery or a lithium iron phosphate battery, its power density is low, and the battery stores less electrical energy at the same volume or weight. When a large amount of current needs to be provided instantaneously to achieve a quick start of the starter, the traditional battery may not be able to release enough electrical energy in a short time to support the high power demand of the starter. Utility Model Content

[0004] In view of the above problems, on the first aspect, an embodiment of the utility model provides an automobile start-stop and energy recovery system, which includes: a microcontroller, a supercapacitor module, a battery, a starter, an electric energy conversion module and a switch module, the battery and the supercapacitor module are respectively connected to the starter, the switch module is connected between the supercapacitor module and the battery, the battery is connected to the supercapacitor module, the electric energy conversion module is connected between the battery and the supercapacitor module, and the microcontroller is respectively connected to the supercapacitor module, the battery and the electric energy conversion module.

[0005] In a possible implementation, the starter is a BSG motor.

[0006] In a possible implementation, the storage battery is a lithium battery, a lead-acid battery, or a lithium-ion capacitor.

[0007] In a possible implementation, the microcontroller includes a voltage detection module, and the voltage detection module is used to monitor the voltage of the supercapacitor module.

[0008] In a possible implementation, the supercapacitor module includes a plurality of supercapacitor units, and the plurality of supercapacitor units are connected in parallel or in series.

[0009] In a possible implementation, the switch module includes a self-locking patch switch.

[0010] In a possible implementation, the power conversion module includes a bidirectional DC-DC converter.

[0011] In a second aspect, the utility model further provides an automobile, comprising an automobile start-stop and energy recovery system as described in the above aspect.

[0012] The automobile start-stop and energy recovery system provided by the embodiment of the utility model includes a microcontroller, a supercapacitor module, a battery, a starter, an electric energy conversion module and a switch module. When the automobile ignition signal is received, the electric energy of the supercapacitor module is released to the starter by closing the switch module to complete the starting process. The microcontroller is used to control the operation of the electric energy conversion module and convert the electric energy of the battery to charge the supercapacitor module. Since the supercapacitor has the characteristics of high electric energy density and fast charging and discharging speed, by introducing the supercapacitor module to provide energy for the starter, the disadvantage of low electric energy density of the traditional battery can be compensated, the performance of the starter can be improved, and a fast and reliable starting process can be ensured. In addition, during the driving process of the car, if the brake or the accelerator pedal is released, the switch module can be closed to charge the supercapacitor module and the battery with the recovered energy. This process realizes the recovery and storage of energy, and has the effect of energy saving and emission reduction. Through this system design, the car can achieve efficient utilization and recovery of energy during the starting and driving process, improve energy utilization efficiency, and meet the development trend of environmental protection and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a module block diagram of an embodiment of the utility model;

[0014] Figure 2 A schematic diagram of the circuit principle of an embodiment of the utility model;

[0015] Explanation of reference numerals: 100, microcontroller; 200, supercapacitor module; 300, battery; 400, starter; 500, power conversion module; 600, switch module. DETAILED DESCRIPTION

[0016] The overall idea of ​​the technical solution provided by the utility model is as follows:

[0017] See also Figure 1 , an automobile start-stop and energy recovery system, comprising:

[0018] The microcontroller 100, the supercapacitor module 200, the battery 300, the starter 400, the power conversion module 500 and the switch module 600, the battery 300 and the supercapacitor module 200 are respectively connected to the starter 400, the switch module 600 is connected between the supercapacitor module 200 and the battery 300, the battery 300 is connected to the supercapacitor module 200, the power conversion module 500 is connected between the battery 300 and the supercapacitor module 200, and the microcontroller 100 is respectively connected to the supercapacitor module 200, the battery 300 and the power conversion module 500.

[0019] Specifically, the microcontroller 100 is connected to the supercapacitor module 200, the battery 300 and the power conversion module 500 respectively, for monitoring the state of the system and controlling the operation of the system. It is understandable that in the automobile start-stop and energy recovery system, the microcontroller 100 is generally an integrated circuit chip for controlling and managing various functions and components in the system. The microcontroller 100 generally includes functional modules such as a central processing unit (CPU), a memory (ROM and RAM), an input / output interface and a timer. Common microcontroller brands include Microchip (PIC series), STM icroe l ectron i cs (STM32 series), NXP (LPC series), etc. They are widely used in automotive electronic systems, household appliances, industrial control, and embedded systems.

[0020] The supercapacitor module 200 is connected to the battery 300 and the starter 400, and the energy release and charging are realized through the switch module 600. The supercapacitor module 200 is used to provide energy support with high electric energy density and fast charging and discharging speed. It can be understood that the supercapacitor module 200 is a high-performance capacitor component that can store and release a large amount of energy and has high energy density and fast charging and discharging characteristics. The supercapacitor module 200 is usually composed of a plurality of supercapacitor units, which are connected together in parallel or in series to achieve a higher capacity and voltage range. The advantages of the supercapacitor module 200 over ordinary batteries are its fast charging and discharging speed, long life, and good temperature stability. They are different from chemical batteries such as traditional lithium-ion batteries, which can store charge physically and therefore have a higher cycle life and a faster charging and discharging speed. This makes the supercapacitor module 200 have unique advantages in scenarios where fast response and frequent cycle charging and discharging are required.

[0021] The battery 300 is connected to the supercapacitor module 200 and the starter 400, and is used to store electrical energy and provide energy support for the supercapacitor module and the starter 400. It can be understood that the battery 300 is a battery component that can store electrical energy and release it when needed. It can be divided into different types according to different electrochemical principles and structures. Common types include: lead-acid batteries, lithium-ion batteries and nickel-metal hydride batteries.

[0022] The starter 400 is connected to the battery 300 and the supercapacitor module 200, receives energy from the battery 300 and the supercapacitor module 200 and converts it into power. For example, the starter 400 is a BSG motor, which refers to a "Belt Starter Generator" motor, which is usually used in hybrid vehicles and start-stop systems. The BSG motor can be used as a generator to charge the vehicle battery, or as a starter to help start the engine, and convert kinetic energy into electrical energy for energy recovery during deceleration or braking. The BSG motor plays an important role in the automotive system, providing the vehicle with energy management, starting assistance, and kinetic energy recovery functions, which helps to improve fuel efficiency and reduce exhaust emissions.

[0023] The power conversion module 500 is connected between the battery 300 and the supercapacitor module 200, and is used to realize bidirectional conversion of electric energy between different voltage levels, and can convert high voltage into low voltage or vice versa. The power conversion module 500 can adopt a bidirectional DC-DC converter, which is an electronic device used to bidirectionally convert direct current electric energy between two voltage levels. In the automobile start-stop and energy recovery system, the bidirectional DC-DC converter plays an important role in managing the conversion and transmission of electric energy between different voltage levels. The bidirectional DC-DC converter realizes the conversion of electric energy between input and output by controlling the on and off states of switching devices such as MOSFET, IGBT, etc. In the boost conversion mode, the converter boosts the input voltage to a higher voltage level; in the buck conversion mode, the input voltage is reduced to a lower voltage level.

[0024] The switch module 600 is connected to the supercapacitor module 200 and the battery 300. It can be understood that the switch module 600 is used to control the on / off state of each part in the circuit to realize the opening and disconnection of the circuit. By controlling the switching state of the switch module 600 by the microcontroller 100, the energy release and charging between the supercapacitor module 200 and the battery 300 can be controlled.

[0025] The embodiment of the utility model provides a car start-stop and energy recovery system. When receiving the car ignition signal, the electric energy of the super capacitor module 200 is released to the starter 400 by closing the switch module 600 to complete the starting process. The microcontroller 100 is used to control the work of the power conversion module 500, and convert the electric energy of the battery 300 to charge the super capacitor module 200. Since the super capacitor has the characteristics of high power density and fast charging and discharging speed, by introducing the super capacitor module 200 to provide energy for the starter, the disadvantage of low battery power density can be compensated, the starter performance can be improved, and a fast and reliable starting process can be ensured. In addition, during the driving process of the car, if the brake or the accelerator pedal is released, the switch module 600 can be closed, and the recovered energy can be used to charge the super capacitor module 200 and the battery 300. This process realizes the recovery and storage of energy, and has the effect of energy saving and emission reduction. Through this system design, the car can achieve efficient utilization and recovery of energy during the starting and driving process, improve energy utilization efficiency, and meet the development trend of environmental protection and energy saving.

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Furthermore, the microcontroller 100 includes a voltage detection module, and the voltage detection module is used to monitor the voltage of the super capacitor module 200 .

[0028] Furthermore, the switch module 600 includes a self-locking patch switch. It can be understood that the self-locking patch switch can maintain the set switch state in a passive or active state. By adopting the self-locking patch switch, the original switch state can be maintained in the event of a system power outage or other abnormal conditions, thereby ensuring stable operation of the system.

[0029] In one embodiment, see Figure 2The embodiment of the utility model provides an automobile start-stop and energy recovery system, including a battery B, a microcontroller uC, a bidirectional DC-DC converter U1, a supercapacitor module UC, a switch module K1 and a starter M. When receiving an automobile ignition signal, the switch module K1 is closed, and the starter M is discharged through the supercapacitor module UC to complete the start. When the microcontroller uC detects that the voltage of the supercapacitor module UC is lower than Umin (Umin refers to the minimum voltage at which the supercapacitor module UC can start the starter M), the microcontroller uC controls the bidirectional DC-DC converter U1 to work. Through the bidirectional DC-DC converter U1, the battery B will charge the supercapacitor module UC to increase its voltage level. When the voltage of the supercapacitor module UC reaches the set maximum starting voltage Umax, the microcontroller uC will stop the battery B from charging the supercapacitor module UC and keep it within a voltage range suitable for starting the starter M to ensure normal startup of the system. This charging process is completed automatically without manual intervention, thereby improving the customer experience. When the car brakes or releases the accelerator pedal during driving, and the voltage across the supercapacitor module UC is less than Umax, the microcontroller uC can control the closing switch module K1 to charge the supercapacitor module UC with the recovered energy; when the voltage of the supercapacitor module UC reaches Umax, the microcontroller uC controls the bidirectional DC-DC converter U1 to work, and through the bidirectional DC-DC converter U1, the supercapacitor module UC will charge the battery B to increase its voltage level; repeat this process to achieve energy recovery and storage, which has the effect of energy saving and emission reduction.

[0030] An embodiment of the utility model further provides an automobile, including an automobile start-stop and energy recovery system as in the aforementioned embodiment. The various variations and specific embodiments in the aforementioned embodiments are also applicable to the automobile of this embodiment. Through the aforementioned detailed description of an automobile start-stop and energy recovery system, those skilled in the art can clearly know the implementation method of the automobile in this embodiment. For the sake of brevity of the specification, it will not be described in detail here.

[0031] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0032] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An automobile start-stop and energy recovery system, characterized in that: include: A microcontroller, a supercapacitor module, a battery, a starter, an electric energy conversion module and a switch module, wherein the battery and the supercapacitor module are respectively connected to the starter, the switch module is connected between the supercapacitor module and the battery, the battery is connected to the supercapacitor module, the electric energy conversion module is connected between the battery and the supercapacitor module, and the microcontroller is respectively connected to the supercapacitor module, the battery and the electric energy conversion module.

2. The vehicle start-stop and energy recovery system according to claim 1, characterized in that: The starter is a BSG motor.

3. The vehicle start-stop and energy recovery system according to claim 1, characterized in that: The storage battery is a lithium battery, a lead-acid battery or a lithium-ion capacitor.

4. The vehicle start-stop and energy recovery system according to claim 1, characterized in that: The microcontroller includes a voltage detection module, and the voltage detection module is used to monitor the voltage of the supercapacitor module.

5. The vehicle start-stop and energy recovery system according to claim 1, characterized in that: The supercapacitor module includes a plurality of supercapacitor units, and the plurality of supercapacitor units are connected in parallel or in series.

6. The automobile start-stop and energy recovery system according to claim 1, characterized in that: The switch module includes a self-locking patch switch.

7. The automobile start-stop and energy recovery system according to claim 1, characterized in that: The power conversion module includes a bidirectional DC-DC converter.

8. A car, characterized in that: It comprises an automobile start-stop and energy recovery system as described in any one of claims 1-7.

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