Oil and electricity integrated energy supply station and energy supply method

Abstract

The invention belongs to the technical field of energy supply, and particularly relates to an oil-electricity integrated energy supply station and an energy supply method. The oil-electricity integrated energy supply station comprises a hybrid power core system, an oil supply system and an electric energy supply system; the hybrid power core system comprises a fuel generator set and a power battery; the fuel generator set charges the power battery through the charging circuit; the oil supply system comprises a motor and an oil delivery pump, and the motor drives the oil delivery pump to work by obtaining electric energy of the fuel generator set and / or the power battery; the electric quantity supply system comprises transfer equipment used for converting electric energy of the power battery and / or the fuel generator into commercial power. The oil supply system converts electric power into power of a pump through a motor to convey oil, and the electric energy supply system converts electric power into commercial power through transfer equipment. Therefore, the oil-electricity hybrid power comprehensive energy supply system can solve the problem of energy supply of oil-consuming and electric vehicles and equipment.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy replenishment, and in particular relates to an oil-electricity integrated energy replenishment station and an energy replenishment method. Background Art

[0002] As my country's automobile market gradually begins to tilt towards new energy vehicles, although the sales of new energy vehicles have exploded, at this stage in the automobile market, the proportion of fuel vehicles is still over 75%, and the main energy consumption in the automobile field is still fuel.

[0003] Therefore, in the future, the vehicle market will present two types of vehicles: oil-using and electricity-using vehicles. Energy replenishment is mainly carried out at gas stations and charging piles respectively. For situations far away from the city, the energy replenishment of vehicles is usually a compromise, and it is difficult to meet the comprehensive guarantee of oil and electricity. For example, when engineering teams and scientific expedition teams are working outside, engineering equipment and vehicles consume oil or electricity, and it is difficult to unify the energy types, and it is difficult to balance energy security. In addition, if it is far away from the mains, the relevant electrical equipment carried by the personnel is also limited in use time due to power supply problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art and to provide an oil-electric integrated energy supply station that can simultaneously meet the energy supply problems of oil-using and electricity-using vehicles and equipment, and can be used in outdoor long-distance energy supply stations or vehicle-mounted mobile energy supply devices.

[0005] The present invention is realized through the following technical scheme: an oil-electric integrated energy supply station, including a hybrid power core system, an oil supply system and an electric energy supply system; the hybrid power core system includes a fuel generator set and a power battery; the fuel generator set charges the power battery through a charging circuit; the fuel supply system includes a motor and an oil pump, and the motor drives the oil pump to work by obtaining electric energy from the fuel generator set and / or the power battery; the electric energy supply system includes a transfer device for converting the electric energy of the power battery and / or the fuel generator into municipal electricity.

[0006] Furthermore, the transfer equipment includes an AC-AC conversion circuit; the AC-AC conversion circuit includes an AC-DC and a first DC-AC connected in series; the AC / DC is used to convert the AC power generated by the fuel generator set into DC power and output it to the first DC-AC, and the first DC-AC is used to convert the input DC power into municipal power.

[0007] Furthermore, the transfer equipment includes a DC-AC conversion circuit; the DC-AC conversion circuit includes a DC-DC and a second DC-AC connected in series; the DC-DC is used to convert the output voltage of the power battery into a DC voltage suitable for the operation of the second DC-AC and output it to the second DC-AC, and the second DC-AC is used to convert the input DC power into AC power.

[0008] Furthermore, the power output end of the transfer device is connected to at least one of a low-temperature charging unit, a slot-type charging unit and a battery swap station unit.

[0009] Furthermore, the oil supply system also includes a fuel dispenser connected to the oil pump.

[0010] Furthermore, it also includes a control system, which includes a hybrid power control unit ECU, and the hybrid power control unit ECU is used to control the working state of the hybrid power core system according to the SOC and working conditions of the power battery.

[0011] Furthermore, the control system also includes a power battery control unit; the power battery controller is used to control the charging and discharging process of the power battery and to perform balancing control on the single cells in the power battery; further, the control system also includes a motor controller, and the motor controller is used to adjust the flow of the oil pump according to the refueling operation parameters.

[0012] The present invention also provides an energy replenishment method, which performs electric energy replenishment and / or oil replenishment through the oil-electricity integrated energy replenishment station of the present invention.

[0013] Further, the following thresholds are set: first threshold < second threshold < third threshold;

[0014] When refueling, it is determined whether the SOC of the power battery is greater than or equal to a first threshold value. If so, the power battery supplies power to the motor of the refueling system; if not, the fuel generator set is started, and the fuel generator set charges the power battery and supplies power to the motor at the same time;

[0015] When electric energy is being replenished, it is determined whether the SOC of the power battery is greater than or equal to a first threshold value. If so, the power battery supplies power to the transfer equipment of the electric energy replenishment system; if not, the fuel generator set is started, and the fuel generator set charges the power battery and supplies power to the transfer equipment at the same time;

[0016] When the fuel and electric energy are replenished at the same time, it is determined whether the SOC of the power battery is greater than or equal to the second threshold value. If so, the power battery supplies power to the motor and the transfer equipment at the same time; if not, the fuel generator set is started, and the fuel generator set and the power battery supply power to the motor and the transfer equipment at the same time, and when the SOC of the power battery is less than the first threshold value, the power battery stops supplying power, and the fuel generator set supplies power alone and charges the power battery;

[0017] During charging, when the power battery power is greater than or equal to the third threshold, the fuel generator set stops working, and the power battery starts to output power alone.

[0018] Furthermore, the first threshold and the third threshold are respectively the SOCs for preventing the power battery from being overcharged or over-discharged; the second threshold is the minimum SOC of the battery to ensure that oil and electricity can be replenished smoothly at the same time. If the battery power is lower than the second threshold, the remaining battery power cannot effectively support high-power discharge during simultaneous oil and electricity replenishment.

[0019] Compared with the prior art, the beneficial effects of the present invention include:

[0020] 1. After adopting hybrid technology, the engine will work in the ideal range most of the time, supplying power to the battery pack, and then the battery will provide energy to the pump unit and power supply board according to the working conditions, thereby greatly reducing the peak fuel consumption of the engine start, saving energy and reducing emissions. In addition, when driven in electric mode, the hybrid energy supply equipment will significantly reduce noise and emissions because the engine is in a stopped state and relies on the energy stored in the power battery pack for replenishment. It can work stably in special environments (such as in closed or semi-closed spaces), which improves the applicability of the equipment.

[0021] 2. The oil supply system relies on the motor to convert electricity into pump power for oil transportation, while the electric energy supply system directly replenishes through different electric energy supply ports, and the ports can be adapted to most power terminals. Therefore, the oil-electric hybrid comprehensive energy supply system can meet the energy supply problems of oil-using and electric-using vehicles and equipment.

[0022] 3. Controlling according to three thresholds can better match the working mode with the power supply energy of the power battery. The first and third thresholds prevent overcharging and over-discharging. The second threshold ensures that the remaining power of the battery effectively supports high-power discharge during oil-electric simultaneous charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the architectural diagram of the oil-electricity integrated energy supply station.

[0024] Figure 2 This is a physical picture of the core system of hybrid fuel delivery. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0026] refer to Figure 1 and Figure 2 As shown, an oil-electric integrated energy supply station includes a hybrid power core system 1, a fuel supply system and an electric energy supply system; the hybrid power core system includes a fuel generator set and a power battery; the fuel generator set charges the power battery through a charging circuit; the fuel supply system includes a motor and an oil pump, and the motor drives the oil pump to work by obtaining electric energy from the fuel generator set and / or the power battery; the electric energy supply system includes a transfer device 2 for converting the electric energy of the power battery and / or the fuel generator into municipal electricity.

[0027] The municipal electricity in the present invention refers to electric energy having the same properties as the commercially available electric energy of the power grid company, including properties such as voltage, so as to match most electrical equipment using commercially available electric energy.

[0028] The oil supply system also includes a fuel dispenser 3 connected to the oil pump. The power output end of the transfer device is connected to at least one of a low-temperature charging unit 4, a slot-type charging unit 5 and a battery swap station unit 6.

[0029] The hybrid core system can provide energy for both the fuel supply system and the power supply system to achieve comprehensive energy supply. The test stand is built with profiles and equipped with self-locking casters, which is flexible, safe, reliable, strong and durable. In addition, when the working conditions of the comprehensive supply equipment change, especially when it is just started, the power battery provides energy to support the system. When the battery power is used to a certain extent, the diesel generator starts to work to charge the power battery, thus playing a role in smoothing the speed of the diesel engine, making it as stable as possible in the optimal working range, thereby reducing its fuel consumption and improving emissions.

[0030] It also includes a control system, which includes a hybrid power control unit ECU, and the hybrid power control unit ECU is used to control the working state of the hybrid power core system according to the SOC and working conditions of the power battery.

[0031] The control system also includes a power battery control unit; the power battery controller is used to control the charging and discharging process of the power battery and to perform balancing control on the single cells in the power battery.

[0032] The control basis of the system is the control unit of each system, and the core component is the hybrid power control unit ECU. The system adopts a centralized control and display method, and includes a power battery control unit, a hybrid power control unit, a motor controller, a display controller, a source controller, etc. The modules are connected by quick-connect cables, and the refueling operation parameters are connected to the motor controller through the CAN bus through CAN bus technology and wired transmission to achieve equipment control. The functions of the power battery control unit and the motor controller are as follows:

[0033] 1. Power battery control unit BMS

[0034] (1) Power battery information collection

[0035] 1) Voltage: Single cell voltage measurement range 2V~5V

[0036] 2) Current: isolated current transformer, bidirectional detection, range ±30A

[0037] 3) Temperature: Two slave boards, each with 2 temperature measurement points, temperature measurement range: -40~85℃

[0038] (2) Control system

[0039] 1) Single cell balancing control: passive balancing

[0040] 2) Temperature control: Battery pack temperature range: -20~60℃, 2-way switch control

[0041] 3) Protection: single cell disconnection, overvoltage, undervoltage, overcurrent, overtemperature, BMS overtemperature

[0042] 2. Motor controller

[0043] (1) Control range: 72V300A;

[0044] (2) Control power supply voltage: 9VDC~32VDC

[0045] (3) Output frequency range: 0Hz~600Hz

[0046] (4) Torque response time: <200ms

[0047] (5) Torque control accuracy <3%

[0048] (6) Protection functions: overvoltage protection / undervoltage protection / motor overtemperature protection / controller overtemperature protection / short circuit protection / motor overcurrent protection / motor overspeed protection, etc.

[0049] (7) It can realize adaptive adjustment and control of the speed, pressure and flow of the oil pump, and has the functions of displaying oil transfer information, etc.

[0050] The fuel supply system controls the pump unit and the fuel dispenser to achieve fuel control and flow regulation, and finally supplies fuel to the vehicle. The fuel pump flow rate is 20m 3 / h, and the fuel transfer flow rate is controlled within the range of 0 to 40L / min through the fuel dispenser.

[0051] The power supply system realizes the conversion of AC and DC through the transfer equipment, which can convert different types of power into conventional mains electricity, which is suitable for the charging needs of most power-consuming equipment and new energy vehicles. In addition, through the design of clamps and slots, the charging needs of various types of batteries used in power-consuming equipment can be realized; the battery swap station adopts the charging cabinet design, and the 48 slots can meet the peak power swap demand.

[0052] 1. Transfer equipment

[0053] The transfer equipment is mainly used to invert DC and non-standard AC power into high-quality single-phase industrial frequency AC power, providing AC power for electrical equipment designed for communication.

[0054] The transfer equipment includes an AC-AC conversion circuit; the AC-AC conversion circuit includes an AC-DC and a first DC-AC connected in series; the AC / DC is used to convert the AC power generated by the fuel generator set into DC power and output it to the first DC-AC, and the first DC-AC is used to convert the input DC power into municipal power.

[0055] The transfer equipment also includes a DC-AC conversion circuit; the DC-AC conversion circuit includes a DC-DC and a second DC-AC connected in series; the DC-DC is used to convert the output voltage of the power battery into a DC voltage suitable for the operation of the second DC-AC and output it to the second DC-AC, and the second DC-AC is used to convert the input DC power into AC power.

[0056] The product can be connected to 9~60V DC and 90~264V AC:

[0057] (1) When AC is input, the input AC power is converted into DC power by the AC-DC module in the multi-mode inverter unit, and then inverted into AC 230V AC output by the DC-AC module.

[0058] (2) When DC is input, the input DC power is converted into a DC voltage suitable for the operation of the DC-AC module by the DC boost module, and then inverted into AC230V AC output by the AC-DC module.

[0059] 2. Low temperature charging unit

[0060] The charging unit is suitable for charging 18650 batteries, DDZ-01 batteries, 7.2V / 4Ah batteries, TBP0307 batteries, TBP316 batteries and TBP0306 batteries, 180E walkie-talkie batteries, 3.6V / 4.6Ah Tiantong handheld battery, 7.2V / 2Ah 380MHz digital trunking walkie-talkie batteries, and maintenance of 18650 batteries.

[0061] 3. Slot charging unit

[0062] This charging unit is suitable for charging 24 18650 batteries, 4 DDZ-01 batteries, 2 7.2V / 4Ah batteries, 2 TBP-0307 batteries, 1 TBP-0306 battery and 1 TBP316 battery under AC 110V / 220V (90V~264V) power supply conditions. The charging unit also provides 8 5V / 2A standard USB interfaces for charging mobile phones and other communication devices.

[0063] 4. Battery swap station unit

[0064] The battery swap station unit is mainly used to charge mobile power supplies. The multi-port design allows for replacement on demand. The replaced mobile power supplies that have run out of power are charged in the unit to be used for subsequent charging of communication equipment, lighting equipment, positioning equipment, etc.

[0065] Battery swap station unit performance parameters

[0066] Shell: Aluminum side frame + front tempered glass + cold-rolled thin steel back shell

[0067] Equipped with 48 charging and replacement ports, it can be used to charge 48 mobile power supplies

[0068] AC input parameters: 180-240V 50 / 60Hz

[0069] DC input parameters: 5V-40A*1 / 24V-4.5A*1

[0070] Standby power: 72W

[0071] Full load power: 320W

[0072] Mobile power type: high quality polymer lithium battery

[0073] Power bank capacity: 5000mAh

[0074] Mobile power supply power output: single channel 5V / 2A

[0075] Electric power output interface: three-way microUSB interface, lightning interface and USBtyper interface.

[0076] Mobile power usage times: 300 to 500 charge and discharge times

[0077] Working environment: -20℃~45℃

[0078] Key Features

[0079] 1. Power generation and energy storage functions

[0080] When performing energy storage operations, first check the SOC (battery state of charge) of the equipment, and the display status is displayed in percentage. When the SOC value is less than 20%, it means that charging and energy storage operations can be performed; at this time, start the diesel generator to generate electricity, and when the voltage is stable, connect the lithium battery charger, the lithium battery charger and the power battery pack BMS communicate to control the charging process and ensure the safety of the lithium battery pack; when the lithium battery pack is fully charged, turn off the diesel generator.

[0081] 2. Refueling function

[0082] The oil filling flow is controlled by the oil dispenser, and the flow rate is the rated flow rate of the oil pump 20m 3 / h, meeting the needs of most cars.

[0083] 3. Power supply function

[0084] The inverter unit can invert DC and non-standard AC power into high-quality single-phase industrial frequency AC power, provide AC power for electrical equipment designed for communication, and meet vehicle charging needs.

[0085] The low-temperature charging unit is suitable for centralized constant-temperature charging of battery packs of various types of equipment, and for centralized batch charging and maintenance of batteries of various types of equipment.

[0086] The slot charging unit has multiple output interfaces and can be used to charge multiple types of batteries.

[0087] 4. Battery replacement function

[0088] The battery swap station unit is mainly used to charge mobile power supplies. The multi-port design allows for replacement on demand. The replaced mobile power supplies that have run out of power are charged in the unit to be used for subsequent charging of communication equipment, lighting equipment, positioning equipment, etc.

[0089] Example 1

[0090] Generator power energy replenishment, the engine is in working state, driving the generator to generate electricity. The generated electricity charges the battery pack on the one hand, and drives the motor to transport oil and supply electricity on the other hand. In the generator power energy replenishment mode, as long as the generator has sufficient fuel, it can continuously perform energy replenishment work.

[0091] Example 2

[0092] Battery-powered energy replenishment, the engine is always in a stopped state, and the motor works on the power stored in the battery pack. In this mode, no oxygen is consumed and no exhaust gas is generated, and the noise and heat radiation are low, so this working state has strong environmental compatibility. After the power battery is exhausted, it is necessary to start the engine in the generator power energy replenishment mode to transfer fuel and supply electricity, while charging the battery pack.

[0093] Example 3

[0094] When refueling, it is determined whether the SOC of the power battery is greater than or equal to a first threshold (such as 20% to 30%). If so, the power battery supplies power to the motor of the fuel refueling system; if not, the fuel generator set is started, and the fuel generator set charges the power battery and supplies power to the motor at the same time.

[0095] Example 4

[0096] When the power supply is performed, it is determined whether the SOC of the power battery is greater than or equal to a first threshold value (such as 20% to 30%). If so, the power battery supplies power to the transfer equipment of the power supply system; if not, the fuel generator set is started, and the fuel generator set charges the power battery and supplies power to the transfer equipment at the same time.

[0097] Example 5

[0098] The following thresholds are set: first threshold < second threshold < third threshold.

[0099] The first and third thresholds are the SOCs to prevent overcharge and overdischarge of the power battery; the second threshold is the minimum SOC of the battery to ensure that oil and electricity can be replenished smoothly at the same time. If the battery power is lower than the second threshold, the remaining battery power cannot effectively support high-power discharge during oil and electricity replenishment.

[0100] When the fuel and electric energy are replenished at the same time, it is determined whether the SOC of the power battery is greater than or equal to the second threshold value (such as 40% to 50%). If so, the power battery supplies power to the motor and the transfer equipment at the same time; if not, the fuel generator set is started, and the fuel generator set and the power battery supply power to the motor and the transfer equipment at the same time, and when the SOC of the power battery is less than the first threshold value (such as 20% to 30%), the power battery stops supplying power, and the fuel generator set supplies power output alone and charges the power battery;

[0101] During charging, when the power battery power level is greater than or equal to a third threshold value (eg, 80% to 90%), the fuel generator set stops working, and the power battery starts to output power alone.

[0102] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0103] The above technical scheme is only a specific implementation method of the present invention. For those skilled in the art, it is easy to make various types of improvements or modifications based on the principles disclosed in the present invention, and it is not limited to the technical scheme described in the above specific embodiments of the present invention. Therefore, the above description is only preferred and does not have a restrictive meaning.

Claims

1. An oil-electricity integrated energy supply station, characterized in that: It includes a hybrid power core system, a fuel supply system and an electric power supply system; the hybrid power core system includes a fuel generator set and a power battery; the fuel generator set charges the power battery through a charging circuit; the fuel supply system includes a motor and an oil pump, and the motor drives the oil pump by obtaining electric energy from the fuel generator set and / or the power battery; the electric power supply system includes a transfer device for converting the electric energy of the power battery and / or the fuel generator into municipal electricity.

2. The oil-electricity integrated energy supply station according to claim 1, characterized in that: The transfer equipment includes an AC-AC conversion circuit; the AC-AC conversion circuit includes an AC-DC and a first DC-AC connected in series; the AC / DC is used to convert the AC power generated by the fuel generator set into DC power and output it to the first DC-AC, and the first DC-AC is used to convert the input DC power into municipal power.

3. The oil-electricity integrated energy supply station according to claim 2 is characterized in that: The transfer equipment also includes a DC-AC conversion circuit; the DC-AC conversion circuit includes a DC-DC and a second DC-AC connected in series; the DC-DC is used to convert the output voltage of the power battery into a DC voltage suitable for the operation of the second DC-AC and output it to the second DC-AC, and the second DC-AC is used to convert the input DC power into AC power.

4. The oil-electricity integrated energy supply station according to claim 3 is characterized in that: The power output end of the transfer device is connected to at least one of a low-temperature charging unit, a slot-type charging unit and a battery swap station unit.

5. The oil-electricity integrated energy supply station according to claim 1 is characterized in that: The oil supply system also includes a fuel dispenser connected to the oil delivery pump.

6. The oil-electricity integrated energy supply station according to claim 1, characterized in that: It also includes a control system, which includes a hybrid power control unit ECU, and the hybrid power control unit ECU is used to control the working state of the hybrid power core system according to the SOC and working conditions of the power battery.

7. The oil-electricity integrated energy supply station according to claim 6, characterized in that: The control system also includes a power battery control unit; the power battery controller is used to control the charging and discharging process of the power battery and to balance the single cells in the power battery; the control system also includes a motor controller, which is used to adjust the flow of the oil pump according to the refueling operation parameters.

8. An energy replenishment method, characterized in that: Electric energy replenishment and / or oil replenishment are carried out through the oil-electric integrated energy replenishment station described in any one of claims 1 to 7.

9. The energy replenishment method according to claim 8, characterized in that: The following steps are involved: Set the following thresholds: first threshold < second threshold < third threshold; When refueling, it is determined whether the SOC of the power battery is greater than or equal to a first threshold value. If so, the power battery supplies power to the motor of the refueling system; if not, the fuel generator set is started, and the fuel generator set charges the power battery and supplies power to the motor at the same time; When electric energy is being replenished, it is determined whether the SOC of the power battery is greater than or equal to a first threshold value. If so, the power battery supplies power to the transfer equipment of the electric energy replenishment system; if not, the fuel generator set is started, and the fuel generator set charges the power battery and supplies power to the transfer equipment at the same time; When the fuel and electric energy are replenished at the same time, it is determined whether the SOC of the power battery is greater than or equal to the second threshold value. If so, the power battery supplies power to the motor and the transfer equipment at the same time; if not, the fuel generator set is started, and the fuel generator set and the power battery supply power to the motor and the transfer equipment at the same time, and when the SOC of the power battery is less than the first threshold value, the power battery stops supplying power, and the fuel generator set supplies power alone and charges the power battery; During charging, when the power battery power is greater than or equal to the third threshold, the fuel generator set stops working, and the power battery starts to output power alone.

10. The energy replenishment method according to claim 8, characterized in that: The first threshold and the third threshold are respectively the SOCs for preventing the power battery from being overcharged or over-discharged; the second threshold is the minimum SOC of the battery for ensuring that oil and electricity replenishment can be carried out smoothly at the same time.

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