Fuel gas control system of fuel cell and vehicle

Abstract

The utility model provides a fuel gas control system of a fuel cell and a vehicle, and relates to the technical field of vehicles. The positive electrode end of a storage battery in the system is connected with the first end of a VCU, the first end of a communication controller and the first end of a fuel gas controller through a replacement switch; the negative electrode end of the storage battery is connected with the second end of the VCU, the second end of the communication controller and the second end of the fuel gas controller. The VCU and the communication controller are both connected with the fuel gas controller; the replacement switch is used for controlling the storage battery to supply power to one of the VCU and the communication controller, so that the VCU activates the fuel gas controller to control the gas storage bottle to release fuel gas, or the communication controller activates the fuel gas controller to communicate with a gas station to control the fuel gas to be injected into the gas storage bottle. And the VCU or the communication controller is selectively powered through the replacement switch, so that the energy consumption of the whole vehicle is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicles, and in particular, to a fuel gas control system for a fuel cell and a vehicle. Background Art

[0002] Fuel gases such as hydrogen and methane are applied to new energy vehicles as fuels for vehicle fuel cells, which bring many benefits to environmental protection. Generally, a vehicle electronic control system and an infrared communication controller are provided on such vehicles. The vehicle electronic control system is used to control the vehicle when it is running. The infrared communication controller is related to fuel gas filling and is powered by the vehicle's main battery for both of them. However, the vehicle electronic control system and the infrared communication controller do not work simultaneously. If the main battery powers both of them at the same time, it will cause waste of the vehicle's electrical energy. Summary of the Utility Model

[0003] The present disclosure provides a fuel gas control system for a fuel cell and a vehicle, aiming to solve the above problems.

[0004] To achieve the above object, the present disclosure provides a fuel gas control system for a fuel cell, the system includes: a vehicle control unit (VCU), a fuel gas controller, a communication controller, a replacement switch, a battery, and a gas cylinder; the positive terminal of the battery is respectively connected to the first end of the VCU and the first end of the communication controller through the replacement switch, and the negative terminal of the battery is respectively connected to the second end of the VCU and the second end of the communication controller; the positive terminal of the battery is connected to the first end of the fuel gas controller, and the negative terminal of the battery is connected to the second end of the fuel gas controller; both the VCU and the communication controller are connected to the fuel gas controller; the replacement switch is used to control the battery to supply power to one of the VCU and the communication controller, so as to activate the fuel gas controller through the VCU to control the gas cylinder to release fuel gas, or to activate the fuel gas controller through the communication controller to communicate with a gas filling station to control the injection of fuel gas into the gas cylinder.

[0005] Optionally, the replacement switch includes a moving contact, a first static contact seat, and a second static contact seat. The first static contact seat is connected to the first end of the VCU, and the second static contact seat is connected to the first end of the communication controller; when the moving contact is conducted with the first static contact seat, the battery supplies power to the VCU, and when the moving contact is conducted with the second static contact seat, the battery supplies power to the communication controller.

[0006] Optionally, the system further includes: a fuel gas detection sensor; the fuel gas detection sensor is installed in the gas storage system, and the fuel gas detection sensor is connected to the fuel gas controller; the fuel gas detection sensor is configured to collect gas information of the fuel gas in the gas storage system; the fuel gas controller is configured to send the gas information to the gas filling station to control the injection speed of the fuel gas into the gas cylinder.

[0007] Optionally, the fuel gas detection sensor includes: a temperature sensor; the temperature sensor is installed in the gas cylinder, and the temperature sensor is connected to the fuel gas controller; the temperature sensor is configured to collect the gas temperature of the fuel gas in the gas cylinder; the fuel gas controller is configured to send the gas temperature to the gas filling station to control the injection speed of the fuel gas into the gas cylinder.

[0008] Optionally, the fuel gas detection sensor includes: a pressure sensor; the pressure sensor is installed at the gas cylinder opening, and the pressure sensor is connected to the fuel gas controller; the pressure sensor is configured to collect the gas pressure of the fuel gas in the gas cylinder; the fuel gas controller is configured to send the gas pressure to the gas filling gun to control the injection speed of the fuel gas into the gas cylinder.

[0009] Optionally, the fuel gas detection sensor includes: a concentration sensor; the concentration sensor is installed outside the gas cylinder of the gas storage system, and the concentration sensor is connected to the fuel gas controller; the concentration sensor is configured to collect the gas concentration of the fuel gas outside the gas cylinder; the fuel gas controller is configured to send the gas concentration to the gas filling gun to control the injection speed of the fuel gas into the gas cylinder.

[0010] Optionally, the system further includes: a communication transmitter; the negative terminal of the storage battery is connected to the second terminal of the communication controller through the communication transmitter; the communication transmitter is configured to send the gas information to the gas filling gun of the gas filling station.

[0011] Optionally, the system further includes: a first activation switch; the communication controller is connected to the fuel gas controller through the first activation switch; the communication controller is configured to activate the fuel gas controller by controlling the first activation switch to close.

[0012] Optionally, the system further includes a second activation switch; the VCU is connected to the fuel gas controller through the second activation switch; the VCU is configured to activate the fuel gas controller by controlling the second activation switch to close.

[0013] The present disclosure also provides a vehicle, including the fuel gas filling system of the aforementioned fuel cell.

[0014] The present disclosure provides a fuel gas control system for a fuel cell and a vehicle. In this system, the positive terminal of the storage battery is respectively connected to the first terminal of the VCU, the first terminal of the communication controller, and the first terminal of the fuel gas controller through a replacement switch, and the negative terminal of the storage battery is respectively connected to the second terminal of the VCU, the second terminal of the communication controller, and the second terminal of the fuel gas controller; both the VCU and the communication controller are connected to the fuel gas controller; the replacement switch is used to control the storage battery to supply power to the VCU, so as to activate the fuel gas controller through the VCU to control the gas cylinder to release fuel gas; or, the replacement switch is further used to control the storage battery to supply power to the communication controller, so as to activate the fuel gas controller to communicate with the gas filling station through the communication controller to control the injection of fuel gas into the gas cylinder. Through the replacement switch, separate power supply for the VCU and the communication controller is realized, reducing the energy consumption of the whole vehicle.

[0015] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0017] Figure 1 is a schematic diagram of a fuel gas control system for a fuel cell provided by an exemplary embodiment of the present disclosure.

[0018] Figure 2 is a schematic diagram of a fuel gas control system for a fuel cell provided by another exemplary embodiment of the present disclosure.

[0019] Figure 3 is a schematic diagram of a fuel gas control system for a fuel cell provided by another exemplary embodiment of the present disclosure.

[0020] Figure 4 is a working principle diagram of the fuel gas control system for the fuel cell shown in the present disclosure.

[0021] Figure 5 is a working principle diagram of the fuel gas control system for the fuel cell shown in the present disclosure.

[0022] DESCRIPTION OF THE REFERENCE NUMERALS

[0023] 11 - Fuel gas controller; 12 - Communication controller; 13 - Replacement switch; 131 - First static contact seat; 132 - Second static contact seat; 133 - Moving contact; 14 - Battery; 15 - Gas cylinder; 16 - Communication transmitter; 17 - First activation switch; 18 - Second activation switch. Detailed implementation manners

[0024] The following will describe in detail the specific implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and illustrating the present disclosure, and are not used to limit the present disclosure.

[0025] It should be noted that all actions of obtaining signals, information or data in the present disclosure are carried out on the premise of complying with the corresponding data protection regulations and policies of the country where it is located and obtaining authorization from the owner of the corresponding device.

[0026] Fuel gases such as hydrogen and methane are applied to new energy vehicles as fuels for vehicle fuel cells, which bring many benefits to environmental protection. Generally, a vehicle electronic control system and an infrared communication controller are provided on such vehicles. The vehicle electronic control system is used to control the vehicle when the vehicle is running, that is, to control the fuel gas controller to release fuel gas when the vehicle is running. The infrared communication controller is related to fuel gas refueling, that is, when refueling the fuel gas, it controls the fuel gas controller to send relevant information to the gas filling station to control the injection of fuel gas. Generally, the vehicle electronic control system and the infrared communication controller are powered by the vehicle battery at the same time. However, the vehicle electronic control system and the infrared communication controller do not work at the same time. If the vehicle battery powers both of them at the same time, it will cause waste of vehicle electric energy and shorten the service life of the one that does not work in the vehicle electronic control system and the infrared communication controller. Moreover, if the vehicle electronic control system and the infrared communication controller are both powered at the same time but do not work at the same time, the one that does not work may send an error frame by mistake, causing the fuel gas controller to respond to the error frame, thus triggering a safety problem.

[0027] In addition, at present, most of the hydrogen storage cylinders of heavy commercial fuel cell vehicles are 35 MPa. However, with the continuous development of fuel cell commercial vehicles towards high power, high efficiency, long range, long life and low cost, fuel cell vehicles equipped with 35 MPa hydrogen storage cylinders no longer have advantages in the new energy market. It is particularly important to promote fuel cell vehicles equipped with 70 MPa on-vehicle hydrogen supply systems for application scenarios with a driving range greater than 600 km. At present, the problem of temperature rise during refueling has a greater impact on the hydrogen storage system. During the hydrogen refueling process of the on-vehicle hydrogen system, the temperature inside the cylinder rises rapidly, resulting in the cylinder not being fully filled but unable to continue refueling. Moreover, the problem of temperature rise during 70 MPa refueling is more serious. Therefore, the safety problem of hydrogen refueling temperature rise needs to be solved urgently.

[0028] To solve the above problems, the present disclosure provides a fuel gas control system for a fuel cell. Please refer to Figure 1 , the fuel gas control system of the fuel cell includes: a vehicle electronic control system (Vehicle Control Unit, abbreviated as VCU), a fuel gas controller 11, a communication controller 12, a replacement switch 13, a storage battery 14, and a gas cylinder 15.

[0029] The positive terminal of the storage battery 14 is respectively connected to the first terminal of the VCU and the first terminal of the communication controller 12 through the replacement switch 13, and the negative terminal of the storage battery 14 is respectively connected to the second terminal of the VCU and the second terminal of the communication controller 12. The positive terminal of the storage battery 14 is connected to the first terminal of the fuel gas controller 11, and the negative terminal of the storage battery 14 is connected to the second terminal of the fuel gas controller 11. Both the VCU and the communication controller 12 are connected to the fuel gas controller 11.

[0030] The replacement switch 13 is used to control the storage battery 14 to supply power to one of the VCU and the communication controller, so as to activate the fuel gas controller 11 through the VCU to control the gas cylinder 15 to release fuel gas, or to activate the fuel gas controller 11 through the communication controller 12 to communicate with the gas filling gun of the gas filling station to control the injection of fuel gas into the gas cylinder 15, so as to realize gas filling into the gas cylinder.

[0031] It should be noted that the replacement switch is used to control the storage battery to selectively supply power to the VCU or the communication controller, and there is no situation where the storage battery supplies power to both the VCU and the communication controller at the same time.

[0032] It can be understood that the replacement switch 13 can connect the path between the storage battery 14 and the VCU to realize power supply to the VCU through the storage battery 14. The VCU is used for the overall vehicle control during vehicle driving and works after the VCU is powered on. The VCU activates the fuel gas controller 11, so that the fuel gas controller 11 controls the gas cylinder 15 connected thereto to release fuel gas for use by the fuel cell.

[0033] Among them, the fuel gas controller 11 can be connected to the valve on the gas cylinder 15, and the fuel gas controller 11 controls the gas cylinder 15 to release fuel gas by controlling the valve. Exemplarily, the valve on the gas cylinder 15 includes a cylinder valve and a pressure reducing valve. The fuel gas controller 11 realizes the release of fuel gas from the gas cylinder 15 by controlling the opening of the cylinder valve. And the fuel gas controller 11 can control the opening degree of the pressure reducing valve to control the pressure of the fuel gas released from the gas cylinder 15.

[0034] It can be understood that the replacement switch 13 can connect the path between the storage battery 14 and the communication controller 12, so that the storage battery 14 can supply power to the communication controller 12. The communication controller 12 is used to control the communication between the vehicle and the gas station or the gas filling gun of the gas station when the vehicle refuels with fuel gas, so as to control the injection of fuel gas into the gas storage cylinder through the gas filling gun. After the communication controller 12 is powered on and works, the communication controller 12 activates the communication between the fuel gas controller 11 and the gas filling gun, and controls the injection of fuel gas into the gas storage cylinder 15 by controlling the speed of the gas output by the gas filling gun.

[0035] For example, the fuel gas to be filled is hydrogen, and the fuel gas controller 11 is a hydrogen system controller (Hydrogen Management System, abbreviated as HMS).

[0036] A fuel gas control system for a fuel cell provided in this embodiment. The positive terminal of the storage battery in the system is respectively connected to the first end of the VCU, the first end of the communication controller, and the first end of the fuel gas controller through a replacement switch, and the negative terminal of the storage battery is respectively connected to the second end of the VCU, the second end of the communication controller, and the second end of the fuel gas controller; both the VCU and the communication controller are connected to the fuel gas controller; the replacement switch is used to control the storage battery to supply power to one of the VCU and the communication controller, so as to activate the fuel gas controller through the VCU to control the gas storage cylinder to release fuel gas, or, to activate the fuel gas controller through the communication controller to communicate with the gas filling gun of the gas station to control the injection of fuel gas into the gas storage cylinder. Through the replacement switch, the separate power supply of the VCU and the communication controller is realized, reducing the energy consumption of the whole vehicle.

[0037] In one implementation manner, the replacement switch 13 can be a single-pole double-throw switch. The fixed end of the single-pole double-throw switch is connected to the positive terminal of the storage battery, and the movable end of the single-pole double-throw switch is respectively connected to the first end of the VCU and the first end of the communication controller. When the blade of the single-pole double-throw switch is thrown to the VCU, the single-pole double-throw switch connects the storage battery and the VCU, and the storage battery supplies power to the VCU. After the VCU is powered on, it activates the fuel gas controller to control the gas storage cylinder to release fuel gas. Or, when the blade of the single-pole double-throw switch is thrown to the communication controller, the single-pole double-throw switch connects the storage battery and the communication controller, and the storage battery supplies power to the communication controller. After the communication controller is powered on, it activates the fuel gas controller, and the fuel gas controller sends gas information to the gas station to control the injection of fuel gas into the gas storage cylinder.

[0038] In another implementation manner, please refer to Figure 2 , the replacement switch 13 includes a moving contact 133, a first static contact seat 131, and a second static contact seat 132. The first static contact seat 131 is connected to the first end of the VCU, and the second static contact seat 132 is connected to the first end of the communication controller;

[0039] When the moving contact 133 is electrically connected to the first static contact seat 131, the storage battery powers the VCU. When the moving contact 133 is electrically connected to the second static contact seat 132, the storage battery powers the communication controller.

[0040] After the moving contact 133 is electrically connected to the first static contact seat 131, the storage battery 14 and the VCU are connected, and the storage battery powers the VCU. After the VCU is powered on, it activates the fuel gas controller to control the gas storage cylinder to release fuel gas. Or after the moving contact 133 is electrically connected to the second static contact seat 132, the storage battery 14 and the communication controller 12 are connected. After the communication controller 12 is powered on, it activates the fuel gas controller, and the fuel gas controller sends gas information to the gas filling station to control the injection of fuel gas into the gas storage cylinder.

[0041] Optionally, the first static contact seat can be a relay, and the second static contact seat can also be a relay.

[0042] It should be noted that in the case where the replacement switch includes a moving contact, a first static contact seat, and a second static contact seat, to make the process of releasing and injecting fuel gas controlled by the fuel gas controller orderly, that is, when fuel gas needs to be released, the moving contact is electrically connected to the first static contact seat, and when fuel gas needs to be injected, the moving contact is electrically connected to the second static contact seat.

[0043] Optionally, the fuel gas control system of the fuel cell further includes: a fuel gas detection sensor. The fuel gas detection sensor is installed in the gas storage system and is connected to the fuel gas controller.

[0044] The fuel gas detection sensor is used to collect gas information of the fuel gas in the gas storage system.

[0045] The fuel gas controller is used to send the gas information to the gas filling station to control the injection speed of the fuel gas into the gas storage cylinder.

[0046] In this embodiment, the fuel gas controller sends the gas information to the gas filling station. For example, the gas information is sent to the gas filling gun of the gas filling station, and the dispenser of the gas filling station then controls the injection speed of the fuel gas into the gas storage cylinder through this gas information to ensure the safety of gas injection.

[0047] In one implementation, the fuel gas detection sensor includes: a temperature sensor. The temperature sensor is installed in the gas storage cylinder of the gas storage system and is connected to the fuel gas controller.

[0048] The temperature sensor is used to collect the gas temperature of the fuel gas in the gas storage cylinder.

[0049] The fuel gas controller is used to send the gas temperature to the gas filling station to control the injection speed of the fuel gas into the gas storage cylinder.

[0050] Exemplarily, fuel gas is injected into the gas storage cylinder at an injection speed V1. During the injection process, the temperature in the gas storage cylinder will rise. When the temperature sensor detects the gas temperature T of the fuel gas in the gas storage cylinder 1 reaches the first preset temperature T x1 , the fuel gas injection is controlled to stop for a preset duration through the fuel gas detection sensor. For example, the preset duration is 3 to 5 minutes. After the preset duration is reached, the gas temperature in the gas storage cylinder is continuously detected by the temperature sensor. When the gas temperature T 2 drops below the first preset temperature T x1 , the injection continues at the injection speed V1; or when the gas temperature T 2 is greater than the first preset temperature T x1 , the injection is carried out at the injection speed V2. The gas temperature in the gas storage cylinder is continuously detected. When the gas temperature reaches T 2 the second preset temperature T x2 , the injection stops. Among them, V1 is greater than V2, and T x2 is greater than T x1 .

[0051] In this embodiment, during the process of injecting fuel gas into the gas storage cylinder, the temperature in the gas storage cylinder rises, and the continuously rising temperature will pose a safety hazard. The temperature sensor collects the gas temperature of the fuel gas in the gas storage cylinder, and the fuel gas controller sends the gas temperature to the gas filling station, so that the gas filling station can control the injection speed of the fuel gas into the gas storage cylinder according to the gas temperature, improving the safety of gas injection.

[0052] In one embodiment, the fuel gas detection sensor includes: a pressure sensor. The pressure sensor is installed at the mouth of the gas storage cylinder of the gas storage system, and the pressure sensor is connected to the fuel gas controller.

[0053] The pressure sensor is used to collect the gas pressure of the fuel gas in the gas storage cylinder.

[0054] The fuel gas controller is used to send the gas pressure to the gas filling station to control the injection speed of the fuel gas into the gas storage cylinder.

[0055] Exemplarily, fuel gas is injected into the gas storage cylinder at an injection speed V1. During the injection process, as the fuel gas accumulates, the gas pressure in the gas storage cylinder rises. The pressure sensor arranged in the gas storage cylinder collects the gas pressure of the fuel gas in the gas storage cylinder. When the gas pressure P 1 reaches the first preset pressure P x1When it is detected, the fuel gas filling is controlled to stop for a preset duration by the fuel gas detection sensor. For example, the preset duration is 3 to 5 minutes. After reaching the preset duration, the pressure sensor continues to collect the gas pressure P of the fuel gas in the gas storage cylinder. 2 . When the gas pressure P 2 is less than the first preset pressure P x1 , the fuel gas is continuously injected at the injection speed V1; or when the gas pressure P 2 is greater than the first preset pressure P x1 , the fuel gas is injected at the injection speed V2, and the pressure sensor continues to collect the gas pressure P of the fuel gas in the gas storage cylinder. 3 . When the gas pressure P 3 is greater than the second preset pressure P x2 , the fuel gas injection is stopped, where P x2 is greater than P x1 .

[0056] In this embodiment, during the process of injecting fuel gas into the gas storage cylinder, the air pressure in the gas storage cylinder increases, and the continuously increasing air pressure will pose a safety hazard. The pressure sensor collects the gas pressure of the fuel gas in the gas storage cylinder, and the fuel gas controller sends the gas pressure to the gas filling station, so that the gas filling machine at the gas filling station can control the injection speed of the fuel gas into the gas storage cylinder according to the gas pressure, improving the safety of gas injection.

[0057] In one embodiment, the fuel gas detection sensor includes: a concentration sensor. The concentration sensor is installed outside the gas storage cylinder of the gas storage system, and the concentration sensor is connected to the fuel gas controller.

[0058] The concentration sensor is used to collect the gas concentration of the fuel gas outside the gas storage cylinder.

[0059] The fuel gas controller is used to send the gas concentration to the gas filling station to control the injection speed of the fuel gas into the gas storage cylinder.

[0060] It should be noted that the type of the fuel gas detection sensor is not limited to the above temperature sensor, pressure sensor or concentration sensor, and can also be any combination of the three. For example, the fuel gas detection sensor can be a temperature sensor and a pressure sensor, and the fuel gas detection sensor can also be a temperature sensor and a concentration sensor.

[0061] Optionally, please refer to Figure 3 , the fuel gas control system of the fuel cell further includes: a communication transmitter 16. The negative extreme of the storage battery 14 is connected to the second end of the communication controller 12 through the communication transmitter 16.

[0062] The communication transmitter 16 is configured to transmit the gas information to the hydrogen filling gun of the hydrogen filling station.

[0063] The communication transmitter 16 can also transmit the injection speed obtained by the fuel gas controller to the gas filling station or the gas filling gun.

[0064] Optionally, the communication transmitter 16 can be an infrared communication transmitter.

[0065] Optionally, please refer to Figure 3 , the fuel gas filling system of the fuel cell further includes: a first activation switch 17. The communication controller 12 is connected to the fuel gas controller 11 through the first activation switch 17.

[0066] The communication controller 12 is configured to activate the fuel gas controller by controlling the first activation switch to close. The fuel gas controller forwards the gas information to the gas filling gun through the communication transmitter, and the gas filling gun then feeds back the gas information to the gas dispenser of the gas filling station, enabling the gas dispenser to control the injection of the fuel gas into the gas storage cylinder according to the gas information.

[0067] The fuel gas filling system of the fuel cell further includes a filling port. When the gas filling gun of the gas filling station is inserted into the filling port, the first activation switch 17 closes, connecting the communication controller 12 and the fuel gas controller 11 through the first activation switch 17. The communication controller 12 can then send an activation signal to the fuel gas controller 11, and the fuel gas controller 11 is activated in response to the activation signal. The fuel gas controller 11 controls the injection of the fuel gas into the gas storage cylinder.

[0068] Optionally, please refer to Figure 3 , the fuel gas filling system of the fuel cell further includes a second activation switch 18. The VCU is connected to the fuel gas controller 11 through the second activation switch 18.

[0069] The VCU is configured to activate the fuel gas controller to control the release of the fuel gas from the gas storage cylinder by controlling the second activation switch to close.

[0070] Optionally, the working principle of the fuel gas control system of the fuel cell is as shown in Figure 4As shown in the figure, the principle is as follows: After the hydrogen filling port and the hydrogen filling gun are connected, the hydrogen storage system enters the hydrogen filling state. The moving contact conducts with the second static contact seat, activating the communication controller, controlling the first activation switch to close, and activating the fuel gas controller. The fuel gas controller receives signals such as the gas pressure feedback from the pressure sensor, the gas temperature feedback from the temperature sensor, and the gas concentration feedback from the concentration sensor in real time. Then, it determines whether the system state allows filling. For example, the gas pressure and gas temperature of the gas cylinder are both within their respective normal working ranges, and there are no safety problems such as fuel gas leakage, and it is fed back to the communication controller and transmitted to the gas filling station through the communication transmitter.

[0071] Optionally, the working principle of the fuel gas control system of the fuel cell is as Figure 5 shown below: Before the start of filling, the fuel gas controller detects whether the vehicle state meets the hydrogen filling state through the vehicle CAN network communication. Within time t1 (t1 is greater than the engine purge completion time), it detects whether the vehicle state meets the circuit design, that is, only wakes up the fuel gas controller, communication controller, and communication transmitter related to gas filling, and the rest of the electrical components on the vehicle do not work, and the vehicle is not under high voltage. It can be understood that when the vehicle is not under high voltage, the VCU does not work. If the filling requirements are met, an allow-filling instruction is sent to the gas filling station for filling work. If not, according to the detected feedback code, it is judged whether it is a vehicle low-voltage circuit problem, not under high voltage, or the engine is still in the working state, and corresponding instructions are executed. If the engine is in the working state, power on and off again, wait for the purge to complete and stop, and then detect again; if the vehicle is not powered off or the engine is in the stopped state, power on and off again and then detect again; if it is a vehicle low-voltage circuit problem, directly close the first static contact seat and then detect again. If the vehicle cannot meet the filling requirements, the filling fails. After entering the filling process, the fuel gas controller receives the gas pressure feedback from the pressure sensor and the gas temperature feedback from the temperature sensor, and then transmits them to the communication controller, and sends them to the gas filling gun or gas filling station through the communication transmitter. The communication module (i.e., the communication controller and the communication transmitter) can complete real-time interaction with the gas filling station or the gas filling gun during filling.

[0072] The fuel gas control system of the fuel cell provided by the present disclosure is provided with a communication transmitter for the interaction between the vehicle and the gas filling gun, realizing real-time detection of filling, reducing filling risks, and improving filling efficiency. The switches such as the replacement switch, the first activation switch, and the second activation switch can reduce the vehicle's energy consumption, reduce the vehicle's risks, and increase the service life of components.

[0073] The present disclosure also provides a vehicle, including the fuel gas filling system of the aforementioned fuel cell.

[0074] Among them, the vehicle includes a fuel cell that powers the vehicle through the fuel cell, thereby driving the vehicle or meeting other electrical requirements of the vehicle.

[0075] In summary, the fuel gas control system and vehicle of the fuel cell provided by the present disclosure. In this system, the positive terminal of the storage battery is respectively connected to the first terminal of the VCU, the first terminal of the communication controller, and the first terminal of the fuel gas controller through a replacement switch, and the negative terminal of the storage battery is respectively connected to the second terminal of the VCU, the second terminal of the communication controller, and the second terminal of the fuel gas controller; both the VCU and the communication controller are connected to the fuel gas controller; the replacement switch is used to control the storage battery to supply power to the VCU, so as to activate the fuel gas controller through the VCU to control the gas cylinder to release fuel gas; or, the replacement switch is further used to control the storage battery to supply power to the communication controller, so as to activate the fuel gas controller to communicate with the gas filling gun of the gas filling station through the communication controller. After the gas filling gun obtains other information, it feeds back to the gas filling machine, and then the gas filling machine controls the fuel gas to be injected into the gas cylinder. Through the replacement switch, separate power supply of the VCU and the communication controller is realized, reducing the energy consumption of the whole vehicle.

[0076] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0077] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. For example, when controlling the injection speed of the fuel gas into the gas cylinder by the gas information detected by the fuel gas detection sensor, the fuel gas detection sensor can be any combination among the aforementioned temperature sensor, pressure sensor, and concentration sensor. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0078] Furthermore, any combination can be made among various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A fuel gas control system for a fuel cell, characterized in that: The system includes: a vehicle electronic control system VCU, a fuel gas controller, a communication controller, a replacement switch, a battery and a gas cylinder; The positive terminal of the battery is connected to the first terminal of the VCU and the first terminal of the communication controller respectively through the replacement switch, and the negative terminal of the battery is connected to the second terminal of the VCU and the second terminal of the communication controller respectively; The positive terminal of the battery is connected to the first terminal of the fuel gas controller, and the negative terminal of the battery is connected to the second terminal of the fuel gas controller; The VCU and the communication controller are both connected to the fuel gas controller; The replacement switch is used to control the battery to power one of the VCU and the communication controller, so as to activate the fuel gas controller through the VCU to control the gas cylinder to release fuel gas, or to activate the fuel gas controller through the communication controller to communicate with the gas station to control the injection of fuel gas into the gas cylinder.

2. The system according to claim 1, characterized in that The replacement switch includes a moving contact, a first static contact seat and a second static contact seat, the first static contact seat is connected to the first end of the VCU, and the second static contact seat is connected to the first end of the communication controller; When the moving contact is connected to the first static contact seat, the battery supplies power to the VCU; when the moving contact is connected to the second static contact seat, the battery supplies power to the communication controller.

3. The system according to claim 1, characterized in that The system further comprises: a fuel gas detection sensor; The fuel gas detection sensor is installed in the gas storage system, and the fuel gas detection sensor is connected to the fuel gas controller; The fuel gas detection sensor is used to collect gas information of the fuel gas in the gas storage system; The fuel gas controller is used to send the gas information to the gas filling station to control the speed of injecting the fuel gas into the gas storage cylinder.

4. The system according to claim 3, characterized in that The fuel gas detection sensor comprises: a temperature sensor; The temperature sensor is installed in the gas storage bottle of the gas storage system, and the temperature sensor is connected to the fuel gas controller; The temperature sensor is used to collect the gas temperature of the fuel gas in the gas storage cylinder; The fuel gas controller is used to send the gas temperature to the gas filling station to control the speed of injecting the fuel gas into the gas storage cylinder.

5. The system according to claim 3, characterized in that The fuel gas detection sensor comprises: a pressure sensor; The pressure sensor is installed at the bottle mouth of the gas storage bottle of the gas storage system, and the pressure sensor is connected to the fuel gas controller; The pressure sensor is used to collect the gas pressure of the fuel gas; The fuel gas controller is used to send the gas pressure to the gas filling station to control the speed of injecting the fuel gas into the gas storage cylinder.

6. The system according to claim 3, characterized in that The fuel gas detection sensor comprises: a concentration sensor; The concentration sensor is installed outside the gas storage bottle of the gas storage system, and the concentration sensor is connected to the fuel gas controller; The concentration sensor is used to collect the gas concentration of the fuel gas outside the gas storage cylinder; The fuel gas controller is used to send the gas concentration to the gas filling station to control the speed of injecting the fuel gas into the gas storage cylinder.

7. The system according to any one of claims 3 to 6, characterized in that: The system further comprises: a communication transmitter; The negative terminal of the battery is connected to the second terminal of the communication controller through the communication transmitter; The communication transmitter is used to send the gas information to the gas filling station.

8. The system according to any one of claims 1 to 6, characterized in that: The system further includes: a first activation switch; The communication controller is connected to the fuel gas controller via the first activation switch; The communication controller is used to activate the fuel gas controller by controlling the first activation switch to close.

9. The system according to any one of claims 1 to 6, characterized in that: The system also includes a second activation switch; The VCU is connected to the fuel gas controller via the second activation switch; The VCU is used to activate the fuel gas controller by controlling the second activation switch to close.

10. A vehicle, characterized in that: A fuel gas filling system for a fuel cell comprising the fuel cell according to any one of claims 1 to 9.

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