Motor vehicle control system and motor vehicle

Abstract

The utility model provides a motor vehicle control system and a motor vehicle, and relates to the technical field of fuel cells. The battery control system is provided with a battery control module, an electric pile and a cooling liquid loop, the battery control module is in communication connection with the equipment controller, and the equipment controller is used for sending a water pump low-voltage switching signal to the battery control module after detecting that the control switch is switched on and sending a water pump recovery signal to the battery control module after the control switch is switched off; the cooling liquid loop is provided with a water pump control module, the water pump control module is electrically connected with the battery control module, the water pump control module is in communication connection with the battery control module, and the battery control module is used for controlling the water pump control module to be started at low voltage after receiving a water pump low-voltage switching signal and controlling the water pump control module to be started at low voltage after receiving a water pump recovery signal. And the water pump control module is controlled to start under high pressure. Therefore, the embodiment of the utility model can provide a more convenient way to solve the problem that the motor vehicle is difficult to start because the motor vehicle is not started for a long time.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to, but is not limited to, the technical field of fuel cell, in particular to a motor vehicle control system and a motor vehicle. BACKGROUND

[0002] With the demand of responding to climate change and promoting green development, new energy vehicles are widely used, wherein the new energy vehicles usually adopt fuel cells (such as proton exchange membrane fuel cells) as driving power supply. Meanwhile, in order to improve the safety of the fuel cell, when the insulation resistance of the high-voltage circuit of the vehicle is too low, the fuel cell is not allowed to supply power to the high-voltage circuit. However, in actual application, it is found that after the vehicle is not started for a long time, the components for heat dissipation of the fuel cell stack in the battery management system, such as the radiator and the intercooler, will precipitate ions, resulting in too high conductivity of the circulating water path for heat dissipation of the fuel cell stack, so as to make the insulation resistance of the fuel cell too low, and thus lower the insulation resistance of the high-voltage circuit. Therefore, in order to ensure safety during use, the high voltage of the vehicle is not allowed when the insulation resistance is too low, so that the vehicle cannot be started normally. In the prior art, the common method to solve this problem is to remove the high-voltage line of the fuel cell, and then start the high-voltage pump of the circulating water path of the battery control system in the background application of the fuel cell host computer, so that the circulating water path can repeatedly pass through the ion removal device for ion removal to reduce the conductivity of the system. After starting, the high-voltage line of the fuel cell is connected back, and the starting process is relatively complex. Therefore, how to solve the difficulty in starting the motor vehicle due to long-term non-starting is a technical problem to be solved. CONTENT OF THE UTILITY MODEL

[0003] The following is a summary of the subject matter described in detail in this document. This summary is not intended to limit the scope of protection of the claims. The embodiment of the present application provides a motor vehicle control system, which can provide a more convenient way to solve the problem of difficulty in starting the motor vehicle due to long-term non-starting.

[0004] The motor vehicle control system according to the embodiment of the present application comprises:

[0005] A control switch, a first end of the control switch being grounded;

[0006] A device controller, the device controller being connected with a second end of the control switch;

[0007] The battery control system is provided with a battery control module, an electric pile and a cooling liquid loop, the battery control module is in communication connection with the equipment controller, the loop inlet of the cooling liquid loop is in communication with the liquid outlet of the electric pile, the loop outlet of the cooling liquid loop is connected with the liquid inlet of the electric pile, the equipment controller is used for sending a water pump low-pressure switching signal to the battery control module after the control switch is turned on and sending a water pump recovery signal to the battery control module after the control switch is turned off; the cooling liquid loop is provided with a water pump control module, the water pump control module is in communication connection with the battery control module, the battery control module is used for controlling the water pump control module to start under low pressure after receiving the water pump low-pressure switching signal and controlling the water pump control module to start under high pressure after receiving the water pump recovery signal.

[0008] The above-mentioned embodiments of the present application have at least the following beneficial effects: by controlling the water pump control module to start under low pressure to drive the cooling liquid in the cooling liquid loop to flow, so that the cooling liquid repeatedly removes ions in the deionizer, thereby solving the problem of too high conductivity in the cooling liquid loop when not started for a long time. When the conductivity in the cooling liquid loop meets the high-pressure starting condition, the water pump control module can be controlled to operate under high pressure to provide greater pressure to drive the cooling liquid in the cooling liquid loop to circulate. And by setting the control switch, the operation difficulty during starting can be simplified. Therefore, compared with related technologies, the embodiments of the present application can provide a more convenient way to solve the problem of difficult starting of the motor vehicle caused by long-term non-starting.

[0009] According to some embodiments of the first aspect of the present application, the water pump control module is set as a high-low pressure water pump, and the high-low pressure water pump is configured to support low-pressure starting and high-pressure starting.

[0010] According to some embodiments of the first aspect of the present application, the water pump control module includes a high-pressure water pump and a low-pressure water pump, and the high-pressure water pump and the low-pressure water pump are arranged in parallel.

[0011] According to some embodiments of the first aspect of the present application, the water pump control module further includes a first one-way valve, an input end of the first one-way valve is connected with an input end of the low-pressure water pump, an output end of the first one-way valve is connected with an input end of the high-pressure water pump, and an output end of the high-pressure water pump is connected with an output end of the low-pressure water pump.

[0012] According to some embodiments of the first aspect of the present application, the water pump control module further includes a second one-way valve, an input end of the first one-way valve is connected with an input end of the second one-way valve, and an output end of the second one-way valve is connected with an input end of the low-pressure water pump.

[0013] According to some embodiments of the first aspect of the application, the battery control system further comprises a deionizer and an expansion tank, an input end of the deionizer being connected to the liquid outlet of the stack, an output end of the deionizer being connected to an input end of the expansion tank, and an output end of the expansion tank and an output end of the deionizer being connected to an input end of the water pump control module.

[0014] According to some embodiments of the first aspect of the application, a radiator is arranged on the cooling liquid loop, a water outlet of a return tank of the radiator being connected to an input end of the deionizer, a circulating liquid outlet of the radiator being connected to an input end of the water pump control module, and a circulating liquid inlet of the radiator being connected to the liquid outlet of the stack.

[0015] According to some embodiments of the first aspect of the application, the battery control system further comprises an electrically-controlled three-way valve and a heater, the electrically-controlled three-way valve being arranged between the radiator and the liquid outlet of the stack, an input end of the heater being connected to an output end of the electrically-controlled three-way valve, and an output end of the heater being connected between the circulating liquid outlet of the radiator and the input end of the water pump control module.

[0016] According to some embodiments of the first aspect of the application, the battery control system further comprises an intercooler, an output end of the intercooler being connected between the electrically-controlled three-way valve and the liquid outlet of the stack, and an input end of the intercooler being connected between the output end of the water pump control module and the liquid inlet of the stack.

[0017] In the second aspect, the embodiments of the application provide a motor vehicle comprising the motor vehicle control system according to any one of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the technical scheme of the application, and constitute a part of the specification, and are used together with the embodiments of the application to explain the technical scheme of the application, and do not constitute a limitation on the technical scheme of the application.

[0019] Figure 1 is a structural schematic diagram of the motor vehicle control system provided by the application;

[0020] Figure 2 is a control flow schematic diagram of one embodiment of the motor vehicle control system provided by the application;

[0021] Figure 3 is Figure 2 is a structural schematic diagram of the motor vehicle control system shown in the figure;

[0022] Figure 4 is a control flow schematic diagram of another embodiment of the motor vehicle control system provided by the application;

[0023] Figure 5 is Figure 2 Fig. 1 is a schematic diagram of a vehicle control system according to an embodiment of the present application.

[0024] Reference signs:

[0025] Control switch 100,

[0026] Device controller 200,

[0027] Battery control system 300, battery control module 310, stack 320, coolant loop 330, water pump control module 331,

[0028] High and low pressure water pump 410, high pressure water pump 420, low pressure water pump 430, first one-way valve 440, second one-way valve 450,

[0029] Deionizer 510, expansion tank 520, radiator 530, electrically controlled three-way valve 540, heater 550, intercooler 560. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing the embodiments of the present application only and not intended to limit the present application. The terms "first", "second", "third", "fourth" and the like (if any) used in the specification and the above drawings are used to distinguish similar objects, and not necessarily to describe a particular order or sequence.

[0032] In addition, the described features, structures or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a sufficient understanding of the embodiments of the present disclosure. However, one skilled in the art will realize that the technical solutions of the present disclosure can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be used. In other cases, well-known methods, devices, implementations or operations are not shown or described in detail to avoid obscuring the aspects of the present disclosure.

[0033] The following is an explanation of the components involved in the embodiments of the present application:

[0034] Intercooler: one flow channel flows through air and one flow channel flows through liquid, which mainly functions to cool the high temperature and high pressure air after compression by the air compressor to meet the air temperature requirement at the stack inlet.

[0035] Deionizer: The stack is sensitive to conductivity, and high conductivity in the coolant will cause the insulation resistance of the entire system to decrease, so a deionizer is needed to remove conductive ions in the liquid, reduce the conductivity of the entire system liquid, increase the insulation resistance of the system, and improve the service life of the stack, while improving the electrical safety of the system.

[0036] Radiator: mainly composed of radiator core, fan, structure for fixing the core and fan, coolant flows through the core channel, and the fan blows the heat of the coolant to the air through the core. It belongs to liquid-gas heat exchange form. Under different power operating conditions, the fan speed is adjusted to meet the heat dissipation requirements under different operating conditions. The radiator is mainly used to dissipate heat and control the inlet temperature of the stack.

[0037] Expansion tank: its main functions are to provide pipeline liquid expansion space, water replenishment, pressure stabilization, and gas exhaust. The expansion tank is filled with coolant through the filling port; after a long time of subsequent operation, the coolant is also replenished through the filling port. The heat dissipation loop in the system is connected to the exhaust port of the expansion tank, and the coolant carries the gas in the pipeline to the expansion tank. When the gas carried into the expansion tank becomes more and more, the gas pressure above the expansion tank is higher than the pressure valve pressure of the filling port cover, and the pressure valve opens, and the gas in the pipeline is discharged through the exhaust port of the filling port. The operating pressure in the pipeline fluctuates at different times, and the pressure is different under different pump speeds. When the pressure in the pipeline fluctuates, the expansion tank can stabilize the pressure. Under different environmental temperatures, the volume of the liquid in the pipeline will change, and the expansion tank provides expansion space to meet the volume change of the coolant in the pipeline in the heat dissipation loop under different temperatures.

[0038] Filter: used to remove impurities to prevent impurities from entering the stack and damaging the stack. The filter can protect all parts in the circuit to prevent impurities from damaging the parts and the stack.

[0039] High-pressure water pump: is the power source in the heat dissipation loop, and the speed is adjustable to meet the flow demand under different operating power conditions. The high-pressure water pump mainly controls the temperature difference between the inlet and outlet of the stack.

[0040] As shown in Figures 1 to 5 The motor vehicle control system according to the embodiment of the present application comprises:

[0041] A control switch 100, a first end of the control switch 100 being grounded;

[0042] A device controller 200, the device controller 200 being connected with a second end of the control switch 100;

[0043] The battery control system 300 is provided with a battery control module 310, an electric pile 320 and a cooling liquid loop 330. The battery control module 310 is in communication connection with the equipment controller 200. The loop inlet of the cooling liquid loop 330 is in communication with the liquid outlet of the electric pile 320. The loop outlet of the cooling liquid loop 330 is connected with the liquid inlet of the electric pile 320. The equipment controller 200 is used to send a water pump low-pressure switching signal to the battery control module 310 after detecting that the control switch 100 is closed and send a water pump recovery signal to the battery control module 310 after the control switch 100 is opened. The cooling liquid loop 330 is provided with a water pump control module 331. The water pump control module 331 is in communication connection with the battery control module 310. The battery control module 310 is used to control the water pump control module 331 to start under low pressure after receiving the water pump low-pressure switching signal and control the water pump control module 331 to start under high pressure after receiving the water pump recovery signal.

[0044] Therefore, by controlling the water pump control module 331 to start under low pressure to drive the cooling liquid in the cooling liquid loop 330 to flow, the cooling liquid is repeatedly subjected to ion removal by the deionizer 510, thereby solving the problem of excessively high conductivity in the cooling liquid loop 330 when the motor vehicle is not started for a long time. When the conductivity in the cooling liquid loop 330 meets the high-pressure starting condition, the water pump control module 331 can be controlled to operate under high pressure to provide greater pressure to drive the cooling liquid in the cooling liquid loop 330 to circulate. And by setting the control switch 100, the operation difficulty during starting can be simplified. Therefore, compared with the related art, the embodiment of the present application can provide a more convenient way to solve the problem of difficult starting of the motor vehicle caused by long-term non-starting.

[0045] As can be understood, Figure 4 and Figure 5 The water pump control module 331 is set as a high-low pressure water pump 410 which is configured to support low-pressure starting and high-pressure starting.

[0046] As can be understood, Figure 2 and Figure 3 The water pump control module 331 includes a high-pressure water pump 420 and a low-pressure water pump 430 which are arranged in parallel.

[0047] As can be understood, Figure 3 The water pump control module 331 further includes a first one-way valve 440. The input end of the first one-way valve 440 is connected with the input end of the low-pressure water pump 430. The output end of the first one-way valve 440 is connected with the input end of the high-pressure water pump 420. The output end of the high-pressure water pump 420 is connected with the output end of the low-pressure water pump 430.

[0048] As can be understood, Figure 3As shown, the water pump control module 331 further comprises a second one-way valve 450, an input end of the first one-way valve 440 is connected with an input end of the second one-way valve 450, and an output end of the second one-way valve 450 is connected with an input end of the low-pressure water pump 430.

[0049] It can be understood that, as Figure 3 As shown, the battery control system 300 further comprises a deionizer 510 and an expansion tank 520, an input end of the deionizer 510 is communicated with the liquid outlet of the stack 320, an output end of the deionizer 510 is connected with an input end of the expansion tank 520, and an output end of the expansion tank 520 and an output end of the deionizer 510 are connected with an input end of the water pump control module 331.

[0050] It can be understood that, as Figure 3 and Figure 5 As shown, the cooling liquid loop 330 is provided with a radiator 530, a liquid outlet of a backwater tank of the radiator 530 is connected with an input end of the deionizer 510, a circulating liquid outlet of the radiator 530 is connected with an input end of the water pump control module 331, and a circulating liquid inlet of the radiator 530 is communicated with the liquid outlet of the stack 320.

[0051] It can be understood that, as Figure 3 and Figure 5 As shown, the battery control system 300 further comprises an electrically-controlled three-way valve 540 and a heater 550, the electrically-controlled three-way valve 540 is located between the radiator 530 and the liquid outlet of the stack 320, an input end of the heater 550 is connected with one output end of the electrically-controlled three-way valve 540, and an output end of the heater 550 is connected between the circulating liquid outlet of the radiator 530 and the input end of the water pump control module 331.

[0052] It can be understood that, as Figure 3 and Figure 5 As shown, the battery control system 300 further comprises an intercooler 560, an output end of the intercooler 560 is connected between the electrically-controlled three-way valve 540 and the liquid outlet of the stack 320, and an input end of the intercooler 560 is connected between the output end of the water pump control module 331 and the liquid inlet of the stack 320.

[0053] In the second aspect, the embodiments of the present application provide a motor vehicle, which comprises the motor vehicle control system according to any one of the first aspect.

[0054] The above is a specific description of the preferred embodiments of the present application, but the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A motor vehicle control system, characterized by, The application relates to a motor vehicle control system. The motor vehicle control system comprises: a control switch, a first end of the control switch being grounded; a device controller, a second end of the control switch being connected to the device controller; a battery control system, the battery control system being provided with a battery control module, a stack and a cooling liquid loop, the battery control module being in communication connection with the device controller, a loop inlet of the cooling liquid loop being in communication with a liquid outlet of the stack, a loop outlet of the cooling liquid loop being connected to a liquid inlet of the stack, the device controller being used for sending a water pump low-pressure switching signal to the battery control module after the control switch is turned on and sending a water pump recovery signal to the battery control module after the control switch is turned off; the cooling liquid loop being provided with a water pump control module, the water pump control module being in communication connection with the battery control module, the battery control module being used for controlling the water pump control module to start under low pressure after the water pump low-pressure switching signal is received and controlling the water pump control module to start under high pressure after the water pump recovery signal is received. The water pump control module is a high-low pressure water pump, and the high-low pressure water pump is configured to support low-pressure starting and high-pressure starting. The water pump control module comprises a high-pressure water pump and a low-pressure water pump, and the high-pressure water pump and the low-pressure water pump are arranged in parallel.

2. The motor vehicle control system of claim 1, wherein, The water pump control module further comprises a first one-way valve, an input end of the first one-way valve being connected to an input end of the low-pressure water pump, an output end of the first one-way valve being connected to an input end of the high-pressure water pump, and an output end of the high-pressure water pump being connected to an output end of the low-pressure water pump.

3. The motor vehicle control system of claim 1, wherein, The water pump control module further comprises a second one-way valve, an input end of the first one-way valve being connected to an input end of the second one-way valve, and an output end of the second one-way valve being connected to an input end of the low-pressure water pump.

4. The motor vehicle control system of claim 3, wherein The battery control system further comprises a deionizer and an expansion water tank, an input end of the deionizer being in communication with the liquid outlet of the stack, an output end of the deionizer being connected to an input end of the expansion water tank, and an output end of the expansion water tank and an output end of the deionizer being connected to an input end of the water pump control module.

5. The motor vehicle control system of claim 4, wherein, The cooling liquid loop is provided with a radiator, a water outlet of a backwater tank of the radiator being connected to an input end of the deionizer, a circulating liquid outlet of the radiator being connected to an input end of the water pump control module, and a circulating liquid inlet of the radiator being in communication with the liquid outlet of the stack.

6. The motor vehicle control system of claim 1, wherein, The battery control system further comprises an electrically-controlled three-way valve and a heater, the electrically-controlled three-way valve being located between the radiator and the liquid outlet of the stack, an input end of the heater being connected to one output end of the electrically-controlled three-way valve, and an output end of the heater being connected between the circulating liquid outlet of the radiator and the input end of the water pump control module.

7. The motor vehicle control system of claim 6, wherein, The battery control system further comprises an intercooler, an output end of the intercooler being connected between the electrically-controlled three-way valve and the liquid outlet of the stack, and an input end of the intercooler being connected between an output end of the water pump control module and the liquid inlet of the stack.

8. The motor vehicle control system of claim 7, wherein, The motor vehicle control system comprises any one of the motor vehicle control systems as claimed in claims 1 to 9.

9. The motor vehicle control system of claim 8, wherein, ​ 10. A motor vehicle, characterized in that ​

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