Hybrid vehicle oil circuit supply control method and system, hybrid vehicle

Abstract

The present invention discloses a hybrid vehicle oil supply control method and system, and a hybrid vehicle. The method includes: obtaining power information output by a power battery, generator fault information, and generator controller fault information; when receiving a vehicle power-off command and a low-temperature command, controlling to enter a generator power generation oil product switching mode, or an electronic oil pump working oil product switching mode according to the power information output by the power battery, the generator fault information, and the generator controller fault information; wherein the generator power generation oil product switching mode is that the oil tank module is in the auxiliary oil tank switching state, and the engine controller controls the engine body to work so that the generator controller controls the amount of power sent by the generator to the power battery; the electronic oil pump working oil product switching mode is that the oil tank module is in the auxiliary oil tank switching state, and the electronic oil pump is in the working state.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of new energy vehicles, and in particular to a hybrid vehicle oil circuit supply control method and system, and a hybrid vehicle. Background Art

[0002] Environmental adaptability is one of the attributes that all vehicles, especially new energy vehicles, need to focus on. New energy vehicles, that is, hybrid vehicles, hybrid vehicles include engines, power batteries and electric motors; when the engine is started, it drives the generator inside the engine to generate electricity; the generator is used to power the power battery and / or the electric motor; the power battery is used to power the electric motor; when the load is small, the power battery drives the electric motor to drive the wheels, and when the load is large, the engine drives the generator body to generate electricity and drive the electric motor;

[0003] Usually, various types of lubricants need to be provided to the vehicle engine, transmission, drive axle, etc. when the engine is started; when the vehicle is running in an extremely low temperature environment, it is necessary to replace various lubricants and antifreeze in the vehicle engine, transmission, drive axle, etc. with low-grade products that meet the temperature conditions. At the same time, in order to prevent diesel or gasoline from solidifying and waxing at low temperatures and causing the engine to malfunction, the fuel also needs to be replaced with low-grade oil. Compared with fuel used at normal temperature, low-grade fuel is more expensive, which brings customers higher vehicle use costs in winter, especially for construction machinery with higher fuel consumption. The cost increase is more prominent.

[0004] In order to ensure the normal use of vehicles in winter, the current plan is to add a fuel tank, and the whole vehicle is equipped with two fuel tanks or double-chamber fuel tanks; the main fuel tank is filled with normal-grade oil, such as the low-cost 0# oil, and the auxiliary fuel tank is filled with low-grade oil such as -20# and -35#. When the whole vehicle is used in winter at low temperatures, the low-grade fuel in the auxiliary fuel tank is used first. When the engine is hot and working stably, the fuel in the main fuel tank is heated and liquefied by heating, and then switched to the normal-temperature grade oil in the main fuel tank. Since the normal-temperature grade oil is used in normal use of the vehicle, the fuel pipeline is still filled with normal-temperature grade oil after the vehicle is used. In this way, if the vehicle is stopped and frozen overnight, the normal-temperature oil in the pipeline will freeze and solidify into wax, causing the oil circuit to be blocked when it is used again, and the vehicle cannot work normally.

[0005] Currently, before the vehicle stops, the fuel in the fuel pipeline needs to be switched to low-grade fuel. The driver needs to judge the last working time and manually switch to low-grade fuel when the work is about to end. This method may cause the driver to accidentally forget to switch or switch the fuel too late, resulting in the engine not working when it is used again. Switching the fuel too early will lead to the waste of low-grade fuel and increase costs. Summary of the invention

[0006] The present invention provides a hybrid vehicle oil circuit supply control method and system, and a hybrid vehicle, so as to realize automatic control to enter different oil product switching modes according to the power state of the power battery and the fault state of the power generation system, so as to avoid the problem that the room temperature oil will freeze, solidify and wax after the vehicle is completed, resulting in oil circuit blockage when it is used again, and the vehicle cannot work normally.

[0007] To achieve the above objectives, in a first aspect, an embodiment of the present invention provides a hybrid vehicle oil circuit supply control method, the hybrid vehicle oil circuit supply control method comprising:

[0008] Obtain power information output by the power battery, generator fault information, and generator controller fault information;

[0009] When receiving a vehicle power-off command and a low-temperature command, the generator power generation oil product switching mode or the electronic oil pump working oil product switching mode is controlled according to the power information output by the power battery, the generator fault information and the generator controller fault information;

[0010] The generator oil product switching mode is that the oil tank module is in the auxiliary oil tank switching state, and the engine controller controls the engine body to work so that the generator controller controls the amount of electricity sent by the generator to the power battery;

[0011] The electronic fuel pump working oil product switching mode is that the fuel tank module is in the auxiliary fuel tank switching state, and the electronic fuel pump is in the working state.

[0012] Optionally, according to the power information output by the power battery, the generator fault information and the generator controller fault information, control to enter the generator power generation oil product switching mode, or the electronic oil pump working oil product switching mode, including: when the power information output by the power battery is less than the preset power information, and the generator fault information and the generator controller fault information are not received, control to enter the generator power generation oil product switching mode;

[0013] When the power information output by the power battery is greater than the preset power information, or when the generator fault information and the generator controller fault information are received, the control enters the working oil product switching mode of the electronic oil pump.

[0014] Optionally, the method also includes: after entering the generator fuel switching mode, when the fuel consumption in the oil pipeline between the engine body and the electronic oil pump reaches a preset consumption, controlling the engine controller to stop driving the engine body to operate.

[0015] Optionally, the method further includes: after entering the generator power generation oil product switching mode, the duration of entering the generator power generation oil product switching mode is greater than a first preset time, controlling the engine controller to stop driving the engine body to operate.

[0016] Optionally, the method further includes: after entering the electronic fuel pump working oil product switching mode, the duration of the electronic fuel pump working oil product switching mode is greater than a second preset time, controlling the engine controller to stop driving the engine body to operate.

[0017] In a second aspect, an embodiment of the present invention further provides a hybrid vehicle oil supply control system, the system comprising a power battery, an engine, an electronic oil pump, a fuel tank module and a vehicle controller for executing the hybrid vehicle oil supply control method described in the first aspect; the engine comprises an engine controller, an engine body, a generator and a generator controller; the fuel tank module comprises a main fuel tank, a subsidiary fuel tank and a main and subsidiary fuel tank switching switch;

[0018] The engine body is coupled to the generator; the generator is electrically connected to the power battery through the generator controller;

[0019] The oil delivery pipeline of the engine body is connected to the main oil tank and the auxiliary oil tank respectively through the electronic oil delivery pump and the main and auxiliary oil tank switching switch;

[0020] The vehicle controller is communicatively connected with the power battery, the generator controller, the engine controller, the electronic fuel pump and the main and auxiliary fuel tank switching switches;

[0021] The vehicle controller is specifically used to control the generator power generation oil product switching mode or the electronic oil pump working oil product switching mode according to the power information output by the power battery, the generator fault information and the generator controller fault information when receiving the vehicle power-off command and the low temperature command;

[0022] The generator oil product switching mode is that the main and auxiliary oil tank switching switches are in the auxiliary oil tank switching state, and the engine controller controls the engine body to work so that the generator controller controls the amount of electricity sent by the generator to the power battery;

[0023] The electronic oil pump working oil product switching mode is that the main and auxiliary oil tank switching switches are in the auxiliary oil tank switching state, and the electronic oil pump is in the working state.

[0024] Optionally, the control of entering the generator power generation oil product switching mode or the electronic oil pump working oil product switching mode according to the power information output by the power battery, the generator fault information and the generator controller fault information includes:

[0025] When the power information output by the power battery is less than the preset power information, and the generator fault information and the generator controller fault information are not received, the control enters the generator power generation oil product switching mode;

[0026] When the power information output by the power battery is greater than the preset power information, or when the generator fault information and the generator controller fault information are received, the control enters the working oil product switching mode of the electronic oil pump.

[0027] Optionally, the vehicle controller is further used to control the engine controller to stop driving the engine body to work when the fuel consumption in the oil pipeline reaches a preset consumption;

[0028] Or it is also used to control the engine controller to stop driving the engine body to work when the duration of entering the generator oil product switching mode is greater than a first preset time.

[0029] Optionally, the vehicle controller is further used to control the engine controller to stop driving the engine body to work when the duration of the electronic oil pump's working oil product switching mode is greater than a second preset time.

[0030] In a third aspect, an embodiment of the present invention further provides a hybrid vehicle, which includes the hybrid vehicle oil supply system described in the second aspect.

[0031] The embodiment of the present invention automatically controls the entry into different oil switching modes by judging the power state of the power battery and the fault state of the power generation system, so as to avoid the problem that the room temperature oil will freeze, solidify and wax after the vehicle is completed, causing the oil circuit to be blocked when it is used again, and the vehicle cannot work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a flow chart of a hybrid vehicle oil circuit supply method provided by an embodiment of the present invention;

[0033] Figure 2 is a structural schematic diagram of an oil supply system for a hybrid vehicle provided by an embodiment of the present invention;

[0034] Figure 3 is a flow chart of another hybrid vehicle oil circuit supply control method provided by an embodiment of the present invention;

[0035] Figure 4 It is a structural schematic diagram of a hybrid vehicle oil supply control system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] This embodiment provides a hybrid vehicle oil circuit supply control method; Figure 1 is a flow chart of a hybrid vehicle oil supply control method provided by an embodiment of the present invention, such as Figure 1 As shown, the method comprises the following steps:

[0038] S110, obtaining power information output by the power battery, generator fault information, and generator controller fault information;

[0039] The method is applied to the oil supply system of a hybrid vehicle. Figure 2 is a schematic diagram of the structure of a hybrid vehicle oil supply system provided by an embodiment of the present invention; Figure 2 As shown, the oil supply system of the hybrid vehicle includes a power battery 10, an engine 20, an electronic oil pump 30 and a fuel tank module 40; the electronic oil pump 30 connects the engine 20 and the fuel tank module 40; the engine 20 includes an engine controller 21, an engine body 22, a generator 23 and a generator controller 24; the engine body 22 is coupled to the generator 23; the generator 23 is electrically connected to the power battery 10 through the generator controller 24; the oil pipeline of the engine body 22 is connected to the fuel tank module 40 through the electronic oil pump 30; the engine controller 21 can control the engine body 22 to work under the control of an external control command, and the engine body 22 can drive the generator 2 3 power generation, the generator controller 24 can control the amount of electricity sent by the generator 23 to the power battery 10; the engine body 22 can consume the fuel in the oil pipeline when it is working; the electronic oil pump 30 can pump the fuel in the pipeline into the fuel tank module 40; that is, the hybrid vehicle oil supply system includes two ways of fuel consumption; one way is that the engine body 22 consumes the fuel in the oil pipeline when it is working; the other way is that the electronic oil pump 30 pumps the fuel in the pipeline into the fuel tank module 40; the two ways of fuel consumption can be specifically determined according to the power information output by the power battery 10, the fault information of the generator 23 and the fault information of the generator controller 24.

[0040] S120, when receiving a vehicle power-off command and a low temperature command, controlling the generator to enter a generator power generation oil product switching mode or an electronic oil pump working oil product switching mode according to the power information output by the power battery, the generator fault information and the generator controller fault information;

[0041] Among them, the generator power generation oil product switching mode is that the fuel tank module 40 is in the auxiliary fuel tank switching state, and the engine controller 21 controls the engine body 22 to work so that the generator controller 24 controls the amount of electricity sent by the generator 23 to the power battery 10; the electronic fuel pump working oil product switching mode is that the fuel tank module 40 is in the auxiliary fuel tank switching state, and the electronic fuel pump 30 is in a working state.

[0042] Specifically, the vehicle controller can receive the vehicle power-off instruction and the low-temperature instruction, that is, when the vehicle controller receives the vehicle flameout information and the ambient temperature is less than the preset temperature threshold, the generator power generation oil product switching mode is controlled according to the power information output by the power battery 10, the generator fault information and the generator controller fault information. When entering the generator power generation oil product switching mode, the vehicle controller controls the fuel tank module 40 to be in the auxiliary fuel tank switching state, thereby avoiding the freezing, solidification and waxing of the normal temperature oil after the vehicle is completed; at the same time, the vehicle controller sends an instruction to the engine controller 21 to make the engine controller 21 control the engine body 22 to work, and the engine body 22 in the working state drives the generator 23 to generate electricity. At the same time, the vehicle controller controls the amount of electricity sent by the generator 23 to the power battery 10; in this way, the generator 23 is in the power generation working state, thereby consuming the low-grade fuel in the oil pipeline for power generation, further avoiding the freezing, solidification and waxing of the low-grade fuel in the oil pipeline, which causes the oil circuit to be blocked when it is used again, and the vehicle cannot work normally;

[0043] When the electronic fuel pump is in the oil product switching mode, the vehicle controller controls the mailbox module 40 to be in the auxiliary fuel tank switching state, so that the fuel in the fuel pipeline is switched to low-grade fuel, which prevents the normal temperature fuel from freezing, solidifying and waxing after the vehicle is completed; at the same time, the vehicle controller controls the electronic fuel pump 30 to be in the working state, so that the low-grade fuel in the pipeline is returned to the fuel tank module 40, which further prevents the low-grade fuel in the oil pipeline from freezing, solidifying and waxing, resulting in the oil circuit being blocked when it is used again, and the vehicle cannot work normally; in this way, the present scheme automatically controls to enter different oil product switching modes according to the power state of the power battery and the fault state of the power generation system, so as to prevent the normal temperature fuel from freezing, solidifying and waxing after the vehicle is completed, resulting in the oil circuit being blocked when it is used again, and the vehicle cannot work normally.

[0044] Optionally, based on the above embodiment, step S120 is further refined. Figure 3 is a flow chart of another hybrid vehicle oil supply control method provided by an embodiment of the present invention; Figure 3 As shown, the method specifically comprises the following steps:

[0045] S210, obtaining power information output by the power battery, generator fault information, and generator controller fault information;

[0046] S220, when the power information output by the power battery is less than the preset power information, and no generator fault information and generator controller fault information are received, the control enters the generator power generation oil product switching mode;

[0047] Among them, when the power information output by the power battery is less than the preset power information, and no generator fault information and generator controller fault information are received, the control enters the generator power generation oil switching mode; on the one hand, it avoids the problem that the room temperature oil will freeze and solidify into wax after the vehicle is completed, resulting in oil circuit blockage when used again, and the vehicle cannot work normally; on the other hand, it can replenish the problem of insufficient power of the power battery in time to provide power preparation when the vehicle is started next time.

[0048] S221, after entering the generator power generation oil product switching mode, when the fuel consumption in the oil pipeline reaches a preset consumption, controlling the engine controller to stop driving the engine body to work;

[0049] Among them, in other embodiments, after entering the generator power generation oil product switching mode, when the duration of entering the generator power generation oil product switching mode is greater than a first preset time, the engine controller is controlled to stop driving the engine body to work.

[0050] S230, when the power information output by the power battery is greater than the preset power information, or when the generator fault information and the generator controller fault information are received, the control enters the electronic oil pump working oil product switching mode;

[0051] Among them, the preset power information should be greater than the minimum protection voltage threshold of the power battery; when the power information output by the power battery is greater than the preset power information, or when the generator fault information and the generator controller fault information are received, there is no need to enter the generator power generation oil product switching mode, and directly control to enter the electronic oil pump working oil product switching mode, so as to avoid the problem that the normal temperature oil will freeze, solidify and wax after the vehicle is completed, resulting in the oil circuit being blocked and the vehicle cannot work normally when used again.

[0052] S231. After entering the electronic fuel pump working oil product switching mode, when the electronic fuel pump working oil product switching mode lasts for longer than a second preset time, controlling the engine controller to stop driving the engine body to work.

[0053] Based on the above embodiments, this embodiment specifically determines to enter different oil product switching modes according to different power battery output information, generator fault information and generator controller fault information, and after entering different oil product switching modes, controls the engine controller to stop driving the engine body to work in real time according to the time and status during the mode, thereby ensuring the reliability of hybrid vehicle drive stop.

[0054] Based on the same inventive concept, an embodiment of the present invention further provides a hybrid vehicle oil supply control system. Figure 4 is a structural schematic diagram of a hybrid vehicle oil supply control system provided by an embodiment of the present invention; Figure 4 As shown, the system includes: a power battery 10, an engine 20, an electronic oil pump 30, a fuel tank module 40 and a vehicle controller 50 for executing the hybrid vehicle oil supply control method of the above method; the engine 20 includes an engine controller 21, an engine body 22, a generator 23 and a generator controller 24; the fuel tank module 40 includes a main fuel tank 41, a sub-fuel tank 42 and a main and sub-fuel tank switching switch 43;

[0055] The engine body 22 is coupled to the generator 23; the generator 23 is electrically connected to the power battery 10 through the generator controller 24;

[0056] The oil delivery pipeline of the engine body 23 is connected to the main oil tank 41 and the auxiliary oil tank 42 respectively through the electronic oil delivery pump 30 and the main and auxiliary oil tank switching switch 43;

[0057] The vehicle controller 50 is in communication connection with the power battery 10, the generator controller 24, the engine controller 21, the electronic fuel pump 30 and the main and auxiliary fuel tank switching switches 43;

[0058] The vehicle controller 50 is specifically used to control the generator power generation oil product switching mode or the electronic oil pump working oil product switching mode according to the power information output by the power battery 10, the fault information of the generator 23 and the fault information of the generator controller 24 when receiving the vehicle power-off command and the low temperature command;

[0059] The generator oil switching mode is that the main and auxiliary tank switching switch 43 is in the auxiliary tank switching state, and the engine controller 21 controls the engine body 22 to work so that the generator controller 24 controls the amount of electricity sent by the generator 23 to the power battery 10;

[0060] The electronic oil pump working oil product switching mode is that the main and auxiliary oil tank switching switch 43 is in the auxiliary oil tank switching state, and the electronic oil pump 30 is in the working state.

[0061] The main fuel tank 41 is loaded with normal grade fuel at room temperature, and the auxiliary fuel tank 42 is loaded with low grade fuel. In the low temperature environment in winter, the normal grade fuel at room temperature in the oil pipeline freezes and solidifies and waxes more strongly, which will cause the pipeline to be blocked when the vehicle is used again; the low grade fuel in the oil pipeline freezes and solidifies and waxes less effectively.

[0062] The control process of the oil supply control system of the hybrid vehicle in this scheme is as follows: when the vehicle controller 50 receives the power-off command and the low-temperature command of the vehicle, it controls to enter the generator power generation oil product switching mode or the electronic oil pump working oil product switching mode according to the power information output by the power battery 10, the fault information of the generator 23 and the fault information of the generator controller 24; when entering the generator power generation oil product switching mode, the vehicle controller 50 controls the main and auxiliary oil tank switching switches 43 to be in the auxiliary oil tank 42 switching state, so as to avoid the normal temperature oil product from freezing, solidifying and waxing after the vehicle is completed; at the same time, the vehicle controller 50 sends an instruction to the engine controller 21 to make the engine controller 21 control the engine body 22 to work, and the engine body 22 in the working state drives the generator 23 to generate electricity, and at the same time, the vehicle controller 50 controls the amount of electricity sent by the generator 23 to the power battery 10; in this way, the generator 23 is in the power generation working state, thereby consuming the low-grade fuel in the oil pipeline for power generation, further avoiding the low-grade fuel in the oil pipeline freezing, solidifying and waxing, resulting in the oil circuit being blocked when it is used again, and the vehicle cannot work normally;

[0063] When the electronic fuel pump is in the oil product switching mode, the vehicle controller 50 controls the main and auxiliary fuel tank switching switch 43 to be in the auxiliary fuel tank 42 switching state, so that the fuel in the fuel pipeline is switched to low-grade fuel, which prevents the normal temperature fuel from freezing, solidifying and waxing after the vehicle is completed; at the same time, the vehicle controller 50 controls the electronic fuel pump 30 to be in the working state, so that the low-grade fuel in the pipeline is returned to the auxiliary fuel tank 42, further preventing the low-grade fuel in the oil pipeline from freezing, solidifying and waxing, resulting in the oil circuit being blocked when it is used again, and the vehicle cannot work normally; in this way, the present scheme automatically controls to enter different oil product switching modes according to the power state of the power battery and the fault state of the power generation system, so as to prevent the normal temperature fuel from freezing, solidifying and waxing after the vehicle is completed, resulting in the oil circuit being blocked when it is used again, and the vehicle cannot work normally.

[0064] Optional, see Figure 4 , according to the power information output by the power battery, the generator fault information and the generator controller fault information, the generator power generation oil product switching mode or the electronic oil pump working oil product switching mode is controlled, including:

[0065] When the power information output by the power battery 10 is less than the preset power information, and no fault information of the generator 23 and the fault information of the generator controller 24 is received, the control enters the generator power generation oil product switching mode;

[0066] Among them, when the power information output by the power battery 10 is less than the preset power information, and no fault information of the generator 23 and the generator controller 24 is received, the control enters the generator power generation oil switching mode; on the one hand, it avoids the problem that the room temperature oil will freeze and solidify into wax after the vehicle is completed, resulting in oil circuit blockage when it is used again, and the vehicle cannot work normally; on the other hand, it can replenish the problem of insufficient power of the power battery in time to provide power preparation when the vehicle is started next time.

[0067] When the power information output by the power battery 10 is greater than the preset power information, or when the fault information of the generator 23 and the fault information of the generator controller 24 are received, the control enters the electronic oil pump working oil product switching mode.

[0068] Among them, the preset power information should be greater than the minimum protection voltage threshold of the power battery; when the power information output by the power battery 10 is greater than the preset power information, or when the fault information of the generator 23 and the fault information of the generator controller 24 are received, there is no need to enter the generator power generation oil product switching mode, and directly control to enter the electronic oil pump working oil product switching mode, so as to avoid the problem that the normal temperature oil will freeze, solidify and wax after the vehicle is completed, resulting in the oil circuit being blocked when it is used again, and the vehicle cannot work normally.

[0069] Optional, see Figure 4 The vehicle controller 50 is also used to control the engine controller 21 to stop driving the engine body 22 to work when the fuel consumption in the oil pipeline reaches a preset consumption; wherein the preset consumption is greater than the low-grade fuel stored in the oil pipeline;

[0070] Or it is also used to control the engine controller 21 to stop driving the engine body 22 to work when the duration of the generator fuel switching mode is greater than the first preset time. The first preset time is the minimum time that is calibrated or calculated to ensure that the low-grade fuel stored in the oil pipeline can be completely consumed and switched within this time.

[0071] Optional, see Figure 4 The vehicle controller 50 is also used to control the engine controller 21 to stop driving the engine body 22 to work when the duration of the electronic fuel pump working oil product switching mode is greater than the second preset time. The second preset time is the minimum time that is calibrated or calculated to ensure that the low-grade fuel stored in the oil pipeline can be completely delivered to the auxiliary fuel tank for switching within this time.

[0072] An embodiment of the present invention further provides a hybrid vehicle, which includes the hybrid vehicle oil circuit supply control system described in the above embodiment, and has the beneficial effects of the above embodiment, which will not be repeated here; it can be understood that this solution is applicable to any scenario of a hybrid vehicle, which can be a hybrid truck or a hybrid car, and its specific type is not limited here.

[0073] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A hybrid vehicle oil circuit supply control method, characterized in that: include: Obtain power information output by the power battery, generator fault information, and generator controller fault information; When receiving a vehicle power-off command and a low-temperature command, the generator power generation oil product switching mode or the electronic oil pump working oil product switching mode is controlled according to the power information output by the power battery, the generator fault information and the generator controller fault information; The generator oil product switching mode is that the oil tank module is in the auxiliary oil tank switching state, and the engine controller controls the engine body to work so that the generator controller controls the amount of electricity sent by the generator to the power battery; The electronic oil pump working oil product switching mode is that the oil tank module is in the auxiliary oil tank switching state, and the electronic oil pump is in the working state; Wherein, according to the power information output by the power battery, the generator fault information and the generator controller fault information, the control enters the generator power generation oil product switching mode, or the electronic oil pump working oil product switching mode, including: when the power information output by the power battery is less than the preset power information, and the generator fault information and the generator controller fault information are not received, the control enters the generator power generation oil product switching mode; When the power information output by the power battery is greater than the preset power information, or when the generator fault information and the generator controller fault information are received, the control enters the working oil product switching mode of the electronic oil pump.

2. The hybrid vehicle oil circuit supply control method according to claim 1, characterized in that: Also includes: When the generator oil product switching mode is entered, when the fuel consumption in the oil pipeline between the engine body and the electronic oil pump reaches a preset consumption, the engine controller is controlled to stop driving the engine body to work.

3. The hybrid vehicle oil circuit supply control method according to claim 1, characterized in that: Also includes: When the generator oil product switching mode is entered and the duration of the generator oil product switching mode is greater than a first preset time, the engine controller is controlled to stop driving the engine body to work.

4. The hybrid vehicle oil circuit supply control method according to claim 1, characterized in that: Also includes: When the electronic fuel pump enters the oil product switching mode, and the duration of the electronic fuel pump oil product switching mode is greater than a second preset time, the engine controller is controlled to stop driving the engine body to work.

5. A hybrid vehicle oil supply control system, characterized in that: The invention comprises a power battery, an engine, an electronic oil pump, a fuel tank module and a vehicle controller for executing the fuel supply control method for a hybrid vehicle according to any one of claims 1 to 4; the engine comprises an engine controller, an engine body, a generator and a generator controller; the fuel tank module comprises a main fuel tank, a subsidiary fuel tank and a switch for switching between the main and subsidiary fuel tanks; The engine body is coupled to the generator; the generator is electrically connected to the power battery through the generator controller; The oil delivery pipeline of the engine body is connected to the main oil tank and the auxiliary oil tank respectively through the electronic oil delivery pump and the main and auxiliary oil tank switching switch; The vehicle controller is communicatively connected with the power battery, the generator controller, the engine controller, the electronic fuel pump and the main and auxiliary fuel tank switching switches; The vehicle controller is specifically used to control the generator power generation oil product switching mode or the electronic oil pump working oil product switching mode according to the power information output by the power battery, the generator fault information and the generator controller fault information when receiving the vehicle power-off command and the low temperature command; The generator oil product switching mode is that the main and auxiliary oil tank switching switches are in the auxiliary oil tank switching state, and the engine controller controls the engine body to work so that the generator controller controls the amount of electricity sent by the generator to the power battery; The electronic oil pump working oil product switching mode is that the main and auxiliary oil tank switching switches are in the auxiliary oil tank switching state, and the electronic oil pump is in the working state; Among them, according to the power information output by the power battery, the generator fault information and the generator controller fault information, the generator power generation oil product switching mode or the electronic oil pump working oil product switching mode is controlled, including: When the power information output by the power battery is less than the preset power information, and the generator fault information and the generator controller fault information are not received, the control enters the generator power generation oil product switching mode; When the power information output by the power battery is greater than the preset power information, or when the generator fault information and the generator controller fault information are received, the control enters the working oil product switching mode of the electronic oil pump.

6. The hybrid vehicle oil supply control system according to claim 5, characterized in that: The vehicle controller is further used to control the engine controller to stop driving the engine body to work when the fuel consumption in the oil pipeline reaches a preset consumption; Or it is also used to control the engine controller to stop driving the engine body to work when the duration of entering the generator oil product switching mode is greater than a first preset time.

7. The hybrid vehicle oil supply control system according to claim 5, characterized in that: The vehicle controller is further used to control the engine controller to stop driving the engine body to work when the duration of the electronic oil pump working oil product switching mode is greater than a second preset time.

8. A hybrid vehicle, characterized in that: It includes the hybrid vehicle oil supply control system as described in any one of claims 5 to 7.

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