Energy recovery and photovoltaic combined new energy agricultural vehicle

Abstract

The invention discloses an energy recovery and photovoltaic combined new energy agricultural vehicle. The new energy agricultural vehicle comprises a battery pack, a photovoltaic energy supplementing unit and a current shunting control unit. The driving motor is connected with the generator, and electric power drives the vehicle through the variable-speed transmission unit. A generator shunting method is adopted, and the device can be opened or closed according to different road conditions, that is, 35% of energy is recovered when the device is opened on a flat road, and 100% of electric energy can be recovered when the device is completely opened on a downhill road; and recovery is closed during uphill, so that motor overload and battery power consumption are avoided. The current shunting control unit divides the battery pack into a power battery pack for supplying power and an energy recovery battery pack for receiving electric energy of the generator, and the two battery packs alternately switch power supply and energy storage after the recovery battery is fully charged. A 1000W photovoltaic energy complementing unit is arranged on the roof of the electric vehicle and always supplements electric energy for the current power supply battery pack, and the electric vehicle is still when the electric vehicle is static, but the electric vehicle is not a perpetual motion machine. Through shunting management of discharging and charging, the dependence degree of the vehicle on the power grid can be reduced, and the energy recovery efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, specifically to a new energy agricultural vehicle combining energy recovery and photovoltaic technology. Background Technology

[0002] In the current field of new energy vehicles, some vehicles already employ regenerative braking technology, which converts the vehicle's kinetic energy into electrical energy via the motor when the brakes are applied. However, this method has significant shortcomings: when the brakes are applied, the motor speed drops rapidly, significantly reducing the kinetic energy acquired by the generator, resulting in low energy conversion efficiency. Most of the vehicle's braking energy is dissipated as heat through the brake discs, failing to be effectively recovered and utilized. Simultaneously, the application of photovoltaic energy replenishment technology in existing vehicles is incomplete, lacking integration with the vehicle's power system and energy recovery system. Furthermore, existing photovoltaic charging systems are not flexible and mobile. The power difference between existing onboard photovoltaic systems and motors is too large, making it difficult to form a closed loop for rural vehicles. However, the photovoltaic system of this invention differs from the motor power by only 500W, thus meeting the needs of rural vehicles. Additionally, the overall manufacturing cost is low, generally less than 10,000 yuan, with a long service life, making it affordable for most users. This is a significant difference from current photovoltaic vehicles that cost tens of thousands of yuan, making widespread adoption difficult because their high cost makes them unaffordable for 90% of the population.

[0003] Therefore, the existing technology lacks a solution that can effectively reduce the energy consumption of motors, effectively replenish the energy of generators driven by motors with photovoltaic combinations, and is also equipped with an external 220V to 87.6V charger. Users can freely choose to connect to the national grid or not, depending on their needs. This is a more practical technical solution for rural areas, remote mountainous areas, and most areas with weak power supply, and combines battery pack switching with continuous photovoltaic energy replenishment. Summary of the Invention

[0004] The purpose of this invention is to provide a new energy agricultural vehicle that combines power, energy recovery, and photovoltaic energy complementarity.

[0005] The specific implementation scheme of the present invention is as follows:

[0006] A new energy agricultural vehicle combining energy recovery and photovoltaic technology includes:

[0007] The drive module is a 72V 1500W motor;

[0008] A power generation module, wherein the power generation module is a 72V 1500W generator with the same power as the motor, and the motor is connected to the generator;

[0009] The transmission module has a power output terminal of the motor connected to the input terminal of the transmission module, and an output terminal of the transmission module connected to the vehicle drive wheel.

[0010] The battery pack includes battery No. 1 and battery No. 2, both of which are 72V, 100AH ​​lithium iron phosphate battery packs.

[0011] A 72V 1000W photovoltaic power module, installed on the vehicle roof, converts solar energy into electrical energy; however, the photovoltaic power can be increased or decreased depending on different needs.

[0012] And includes a current shunt control module, which is electrically connected to the 72V1500W motor, the 72V1500W generator, the generator shunt controller, the battery pack, and the photovoltaic energy replenishment module.

[0013] The current shunt control module can control one of the No. 1 and No. 2 batteries to act as a power battery pack to supply power to the motor, while the other acts as an energy recovery battery pack to receive and store the electrical energy generated by the generator. When the energy recovery battery pack is fully charged, the roles of the No. 1 and No. 2 batteries are switched, so that the energy recovery battery pack becomes the power battery pack and the power battery pack becomes the energy recovery battery pack, and the two sets of batteries alternately switch between power supply and energy storage states. Furthermore, the photovoltaic energy replenishment module always replenishes the power battery pack that is currently in the power supply state with electrical energy.

[0014] Preferably, the switching method of the battery pack is as follows:

[0015] When the No. 1 battery is used as a power battery pack to supply power, the No. 2 battery is used as an energy recovery battery pack to store energy, and the photovoltaic energy replenishment module replenishes the No. 1 battery.

[0016] When battery #2 is used as a power battery pack, battery #1 is used as an energy recovery battery pack for energy storage, and the photovoltaic energy replenishment module replenishes the energy of battery #2.

[0017] Preferably, the photovoltaic power generation module operates continuously both when the vehicle is in motion and when it is stationary;

[0018] When the vehicle is stationary, the photovoltaic power replenishment module only replenishes the power battery pack that is currently powered, while the motor, the generator, and the transmission module are all in a stopped state.

[0019] Preferably, the current shunt control module controls the power battery pack to discharge externally when the vehicle is in a power supply state;

[0020] The generator shunt method can be turned on or off according to different road conditions, wherein:

[0021] When the vehicle is driving on a flat road, 35% energy recovery is automatically activated;

[0022] When the vehicle is driving downhill, energy recovery is fully activated to recover as much electrical energy as possible (up to 100%).

[0023] When the vehicle is driving uphill, turn off energy recovery directly to avoid excessive battery consumption and motor overheating and damage caused by excessive uphill load on the motor;

[0024] The current shunt control module also controls one of the No. 1 and No. 2 batteries to act as a power battery pack to supply power to the motor, and the other to act as an energy recovery battery pack to receive electrical energy generated by the generator. After the energy recovery battery pack is fully charged, the two battery packs alternately switch to supply power and store energy.

[0025] The photovoltaic power replenishment module is a 1000W photovoltaic power replenishment unit, located on the roof of the vehicle, which constantly replenishes the power battery pack that is currently in a powered state, even when the vehicle is stationary.

[0026] The current shunt control module reduces the vehicle's dependence on the power grid and improves energy recovery efficiency by managing the shunt between discharging and charging. It is also used to control and protect the energy recovery system and the photovoltaic power replenishment system.

[0027] Preferably, the current shunting control module consumes 10A of current and recovers 9.4A during the energy recovery process. However, the shunting method can be turned on or off depending on the road conditions, avoiding excessive load on the motor when going uphill, which could cause the motor to overheat and burn out. When going downhill, the recovery current recovers as much electrical energy as possible by fully opening the shunting method and sending it to the energy recovery battery pack that is currently in the energy storage state.

[0028] Preferably, the transmission module is a mechanical gearbox, used to switch gears according to different road conditions.

[0029] The beneficial effects of this invention are as follows:

[0030] This invention enables controllable management of discharge and charging, improving energy recovery efficiency. Furthermore, the vehicle of this invention reduces reliance on the external power grid and the supplementary operation of the energy recovery and photovoltaic combination system, achieving the technical effects of reducing dependence on fossil fuels and reducing carbon emissions. Simultaneously, as a mobile power generation unit, multiple agricultural vehicles with energy recovery and photovoltaic combinations can be combined to form a mobile photovoltaic power station, providing emergency power in disaster-stricken or remote areas. When needed by the nation, multiple vehicles can be combined to form a new mobile photovoltaic grid, which helps reduce agricultural production costs and enhance national energy stability.

[0031] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0033] Figure 2 This is a schematic diagram of each module of the present invention; Detailed Implementation

[0034] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example:

[0036] like Figure 1 and Figure 2 As shown, a new energy agricultural vehicle with energy recovery and photovoltaic combination includes a drive module, a power generation module, a transmission module, a battery pack, a photovoltaic energy replenishment module, and a current shunt control module.

[0037] The drive module is a 72V 1500W motor, and the generator module is a 72V 1500W generator with the same power output as the motor. The motor and generator are connected in a drive system. The motor's power output is connected to the input of the transmission module, and the transmission module's output is connected to the vehicle's drive wheels. The transmission module is a mechanical gearbox that can be used to switch gears according to different road conditions. The principle of the gearbox is the same as that of a manual transmission gasoline car, the difference being that it is driven by an electric motor rather than an engine.

[0038] The battery pack includes size 1 and size 2 batteries, both 72V and 100AH. A photovoltaic (PV) power module is installed on the vehicle roof to convert solar energy into electrical energy. This PV module has a photoelectric conversion efficiency of 22.3% and can operate continuously in both sunny and rainy weather, although its efficiency is lower on rainy days. A current shunt control module is electrically connected to the motor, generator, battery pack, and PV power module.

[0039] When the vehicle is running, the current shunt control module controls one of the No. 1 and No. 2 batteries to act as a power battery pack to supply power to the motor, and the other to act as an energy recovery battery pack to receive and store electrical energy generated by the generator. Specifically, when No. 1 is used as the power battery pack to supply power, No. 2 stores energy in the energy recovery battery pack, and the photovoltaic energy replenishment module replenishes energy for No. 1 battery; when No. 2 is used as the power battery pack to supply power, No. 1 stores energy in the energy recovery battery pack, and the photovoltaic energy replenishment module replenishes energy for No. 2 battery.

[0040] The motor drives the generator, and the generator's output is stored in the energy recovery battery pack via a current shunt control module. When the energy recovery battery pack is fully charged, the current shunt control module converts it into a power battery pack, while the original power battery pack becomes the energy recovery battery pack. The two battery packs alternate between power supply and energy storage. Simultaneously, the current shunt control module employs a generator-shunt method, automatically adjusting the energy recovery activation ratio according to different road conditions: 35% energy recovery is activated on flat roads, full activation is activated downhill to recover as much energy as possible (100%), and energy recovery is deactivated uphill to avoid motor overload and excessive battery drain. Furthermore, the vehicle itself is a mobile photovoltaic power station, allowing for recharging in well-lit areas when parked.

[0041] When the current shunt control module is working, the power battery pack in the power supply state only receives photovoltaic charging and discharges outwards, and does not receive charging current from the generator. The energy recovery battery pack in the energy storage state only receives charging current from the generator and does not discharge outwards, thus achieving mode switching between discharging and charging. The aforementioned function of adjusting the energy recovery ratio according to road conditions is achieved through the generator shunt method. Specifically, during energy recovery, the current shunt control module consumes 10A of current, recovers 9.4A of current, and the photovoltaic supplemental current reaches 6.5A on sunny days. When going downhill, the generator shunt method is fully activated, and the recovered current is delivered to the energy recovery battery pack currently in the energy storage state through the shunt method.

[0042] The photovoltaic (PV) energy replenishment module operates continuously both when the vehicle is in motion and when stationary. When the vehicle is moving, the PV module continuously supplies power to the currently powered battery pack. When the vehicle is stationary, the PV module only replenishes the power battery pack, while the motor, generator, and transmission modules are all in a stopped state. Even when the vehicle is stationary, the rooftop PV system continues to operate, charging the vehicle. Although the conversion efficiency is lower on cloudy or rainy days, it does not mean it is not working. During energy conversion, approximately 10% of energy is lost in mechanical conversion, but the 22.3% conversion efficiency of PV can compensate for this, thus not violating the law of conservation of energy. This is because excess energy is recovered only after the vehicle starts, driven by the motor and generator, rather than through braking.

[0043] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A new energy agricultural vehicle combining energy recovery and photovoltaic technology, characterized in that, include: The drive module is a 72V 1500W motor; A power generation module, wherein the power generation module is a 72V 1500W generator with the same power as the motor, and the motor is connected to the generator; The transmission module has a power output terminal of the motor connected to the input terminal of the transmission module, and an output terminal of the transmission module connected to the vehicle drive wheel. The battery pack includes battery No. 1 and battery No. 2, both of which are 72V, 100AH ​​lithium iron phosphate battery packs. A 72V 1000W photovoltaic power module, installed on the vehicle roof, converts solar energy into electrical energy; however, the photovoltaic power can be increased or decreased depending on different needs. And includes a current shunt control module, which is electrically connected to the 72V1500W motor, the 72V1500W generator, the generator shunt controller, the battery pack, and the photovoltaic energy replenishment module. The current shunt control module can control one of the No. 1 and No. 2 batteries to act as a power battery pack to supply power to the motor, while the other acts as an energy recovery battery pack to receive and store the electrical energy generated by the generator. When the energy recovery battery pack is fully charged, the roles of the No. 1 and No. 2 batteries are switched, so that the energy recovery battery pack becomes the power battery pack and the power battery pack becomes the energy recovery battery pack, and the two sets of batteries alternately switch between power supply and energy storage states. Furthermore, the photovoltaic energy replenishment module always replenishes the power battery pack that is currently in the power supply state with electrical energy.

2. The new energy agricultural vehicle with energy recovery and photovoltaic combination as described in claim 1, characterized in that, The battery pack switching method is as follows: When the No. 1 battery is used as a power battery pack to supply power, the No. 2 battery is used as an energy recovery battery pack to store energy, and the photovoltaic energy replenishment module replenishes the No. 1 battery. When battery #2 is used as a power battery pack, battery #1 is used as an energy recovery battery pack for energy storage, and the photovoltaic energy replenishment module replenishes the energy of battery #2.

3. A new energy agricultural vehicle combining energy recovery and photovoltaic technology as described in claim 1, characterized in that, The photovoltaic power module operates continuously whether the vehicle is in motion or stationary. When the vehicle is stationary, the photovoltaic power replenishment module only replenishes the power battery pack that is currently powered, while the motor, the generator, and the transmission module are all in a stopped state.

4. A new energy agricultural vehicle combining energy recovery and photovoltaic technology as described in claim 1, characterized in that, The current shunt control module controls the power battery pack to discharge externally when the vehicle is in a powered state. The generator shunt method can be turned on or off according to different road conditions, wherein: When the vehicle is driving on a flat road, 35% energy recovery is automatically activated; When the vehicle is driving downhill, energy recovery is fully activated to recover as much electrical energy as possible (up to 100%). When the vehicle is driving uphill, turn off energy recovery directly to avoid excessive battery consumption and motor overheating and damage caused by excessive uphill load on the motor; The current shunt control module also controls one of the No. 1 and No. 2 batteries to act as a power battery pack to supply power to the motor, and the other to act as an energy recovery battery pack to receive electrical energy generated by the generator. After the energy recovery battery pack is fully charged, the two battery packs alternately switch to supply power and store energy. The photovoltaic power replenishment module is a 1000W photovoltaic power replenishment unit, located on the roof of the vehicle, which constantly replenishes the power battery pack that is currently in a powered state, even when the vehicle is stationary. The current shunt control module reduces the vehicle's dependence on the power grid and improves energy recovery efficiency by managing the shunt between discharging and charging. It is also used to control and protect the energy recovery system and the photovoltaic power replenishment system.

5. A new energy agricultural vehicle combining energy recovery and photovoltaic technology as described in claim 1, characterized in that, The current shunting control module consumes 10A of current and recovers 9.4A during the energy recovery process. However, the shunting method can be turned on or off depending on the road conditions, avoiding excessive load on the motor when going uphill, which could cause the motor to overheat and burn out. When going downhill, the recovery current recovers as much electrical energy as possible by fully opening the shunting method and sending it to the energy recovery battery pack that is currently in the energy storage state.

6. A new energy agricultural vehicle combining energy recovery and photovoltaic technology as described in claim 1, characterized in that, The transmission module is a mechanical gearbox used to switch gears according to different road conditions.

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