Hydrogen-electricity hybrid system and vehicle

Abstract

The invention relates to the technical field of new energy, and discloses a hydrogen-electricity hybrid system and a vehicle, the hydrogen-electricity hybrid system comprises an electric system, a hydrogen reactor, a voltage regulation module, a first heater, an air compressor and a water pump; the voltage adjusting module, the first heater, the air compressor and the water pump are arranged in a distributed mode. The hydrogen reactor is used for generating voltage through hydrogen, the voltage adjusting module is connected with the hydrogen reactor, the water pump, the first heater, the air compressor and the electric system, and the voltage adjusting module is used for boosting the voltage generated by the hydrogen reactor to target voltage so as to supply power to the first heater, the air compressor, the water pump and the electric system. Therefore, the hydrogen reactor, the voltage regulation module, the first heater, the air compressor and the water pump in the hydrogen fuel system are arranged in a distributed mode, the situation that when the hydrogen reactor, the voltage regulation module, the first heater, the air compressor and the water pump are integrated, the size of a single body is too large is avoided, the space layout requirement for the whole vehicle is lowered, and the maintenance cost of the hydrogen-electricity hybrid system is lowered.

Description

Technical Field

[0001] The present application relates to the field of new energy technologies, and particularly to a hydrogen-electric hybrid system and a vehicle. Background Art

[0002] With the shortage of non-renewable resources, electric vehicles have developed rapidly. However, at present, pure electric vehicles have problems such as range anxiety and charging convenience. Hydrogen fuel has the advantages of reacting to produce zero-pollution water, being as convenient to hydrogenate as refueling gasoline, and having a relatively wide range of hydrogen sources. Therefore, hydrogen-electric vehicles have become one of the main directions for the development of future new energy vehicles.

[0003] When combining a hydrogen fuel system with a pure electric system to construct a hydrogen-electric hybrid high-voltage system, usually the hydrogen fuel system is first physically integrated, and then integrated with the pure electric system through a power distribution unit (PDU) to form an integrated high-voltage distribution box. In such a combination method, the volume after integration is too large, and the requirements for the spatial layout of the whole vehicle are very high, and it needs to be adjusted according to different vehicle models. In addition, during the use of the vehicle, if a certain unit or component fails, the entire integrated module needs to be replaced, resulting in high maintenance costs.

[0004] Therefore, it can be seen that how to reduce the requirements of the hydrogen fuel system for the vehicle spatial layout and reduce the maintenance cost and difficulty of the hydrogen-electric high-voltage system is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] In view of this, one aspect of the present application provides a hydrogen-electric hybrid system, which includes: an electric system, a hydrogen stack, a voltage regulation module, a first heater, an air compressor, and a water pump; wherein, the voltage regulation module, the first heater, the air compressor, and the water pump are distributedly arranged;

[0006] The hydrogen stack is used to generate voltage through hydrogen;

[0007] The voltage regulation module is connected to the hydrogen stack and is also connected to the water pump, the first heater, the air compressor, and the electric system;

[0008] The voltage regulation module is used to regulate the voltage generated by the hydrogen stack to a target voltage to supply power to the first heater, the air compressor, the water pump, and the electric system.

[0009] Another aspect of the present application provides a vehicle, which includes: a drive motor and the hydrogen-electric hybrid system as described above, and the hydrogen-electric hybrid system is connected to the drive motor to supply power to the drive motor.

[0010] A hydrogen-electric hybrid system and a vehicle provided by this application have the following beneficial effects: The hydrogen stack, voltage regulation module, first heater, air compressor, and water pump in the hydrogen fuel system are distributed to construct a distributed high-voltage hydrogen-electric hybrid system, avoiding the problem of excessive single unit volume when integrating the hydrogen stack, voltage regulation module, first heater, air compressor, and water pump. This reduces the requirements for the overall vehicle's spatial layout and also reduces the maintenance cost and difficulty of the hydrogen-electric hybrid system. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 FIG. 6 is a schematic structural diagram of a hydrogen-electric hybrid system provided by an embodiment of this application;

[0012] Figure 2 FIG. 10 is a schematic structural diagram of another hydrogen-electric hybrid system provided by an embodiment of this application;

[0013] Figure 3 FIG. 14 is a schematic structural diagram of a hydrogen-electric hybrid system provided by another embodiment of this application;

[0014] Figure 4 FIG. 18 is a schematic structural diagram of another hydrogen-electric hybrid system provided by another embodiment of this application;

[0015] Figure 5 FIG. 22 is a schematic structural diagram of yet another hydrogen-electric hybrid system provided by another embodiment of this application;

[0016] Figure 6 FIG. 26 is a schematic structural diagram of a hydrogen-electric hybrid system provided by yet another embodiment of this application;

[0017] Figure 7 FIG. 30 is a schematic structural diagram of another hydrogen-electric hybrid system provided by yet another embodiment of this application;

[0018] Figure 8 FIG. 34 is a schematic structural diagram of yet another hydrogen-electric hybrid system provided by yet another embodiment of this application.

[0019] The reference numerals are as follows: 10 is an electric system, 11 is a hydrogen fuel system, 12 is a hydrogen stack, 13 is a voltage regulation module, 14 is a first heater, 15 is an air compressor, 16 is a water pump, 17 is a Boost boost module, 18 is a first integration module, 19 is a power battery, 20 is a compressor, 21 is a second heater, 22 is an on-vehicle charger, 23 is a storage battery, 24 is a drive motor, 25 is an air conditioning system, 26 is a front drive shaft, 27 is a hydrogen system controller, 28 is an air compressor controller, 29 is a vehicle controller, 30 is a wire splitter, 31 is a third heater, 32 is a first hydrogen supply system, 33 is a second hydrogen supply system, 34 is an electric drive three-in-one, 35 is a hydrogen refueling port, 36 is a slow charging port, 37 is a fast charging port, 130 is a DC boost module, 131 is a DC buck module, 1300 is a boost unit, and 1301 is a power distribution unit. Detailed Description of the Embodiment

[0020] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0021] The terms used in the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "the", and "said" used in the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0022] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to a determination".

[0023] With the continuous development of pure electric vehicles, the zero-carbon ecological problems of key components such as the entire industrial chain of power batteries in electric vehicles have become important issues of concern. In addition, pure electric vehicles also have problems such as range anxiety and charging convenience.

[0024] Since refueling a car with hydrogen is as convenient as refueling with gasoline, and the sources of hydrogen fuel are extensive and the cost is low. For example, hydrogen can be obtained through biological hydrogen production, industrial hydrogen production and other means. In addition, after hydrogen reacts, it generates water with zero pollution. Therefore, the application of hydrogen in the automotive industry has become one of the main trends in the development of new energy vehicles.

[0025] However, hydrogen fuel cells cannot achieve fast and precise output control like gasoline engines. Under the conditions of rapid acceleration and deceleration, they cannot meet the rapid and frequent changes in output power and torque. Therefore, combining the hydrogen fuel system and the power battery system has become the main way for new energy vehicles.

[0026] Currently, in the hydrogen-electric hybrid high-voltage system, usually after integrating the hydrogen fuel system, the entire integrated module is connected to the power battery system to form a hydrogen-electric hybrid high-voltage structure. However, the volume of the integrated hydrogen fuel system monomer is too large, and it has high requirements for the local space of the whole vehicle, and the layout position needs to be adjusted according to different vehicle models. In addition, after integration, if any module in the integrated module is damaged, the entire integrated module needs to be replaced, and the maintenance cost is very high.

[0027] To solve the above technical problems, the embodiments of the present application provide a hydrogen-electric hybrid system, which disassembles the components in the hydrogen fuel system, constructs a distributed high-voltage architecture, reduces the requirements for the spatial layout of the whole vehicle, and reduces the maintenance cost.

[0028] Figure 1 The structure diagram of a hydrogen-electric hybrid system provided by the embodiments of the present application is as Figure 1 shown. The hydrogen-electric hybrid system includes: an electric system 10, a hydrogen stack 12, a voltage regulation module 13, a first heater (PTC) 14, an air compressor 15 and a water pump 16. Among them, the hydrogen stack 12, the voltage regulation module 13, the PTC 14, the air compressor 15 and the water pump 16 constitute a hydrogen fuel system 11, and the hydrogen fuel system 11 is combined with the electric system 10 to construct a hydrogen-electric hybrid system.

[0029] In order to reduce the too large volume of the monomer when all the components in the hydrogen fuel system 11 are integrated, in the embodiments of the present application, the hydrogen stack 12, the voltage regulation module 13, the PTC 14, the air compressor 15 and the water pump 16 are distributedly arranged and selected, reducing the requirements for the spatial layout of the hydrogen-electric system of the whole vehicle.

[0030] As Figure 1As shown, the voltage regulation module 13 is connected to the hydrogen stack 12 and is also connected to the water pump 16, PTC 14, air compressor 15, and electric system 10. The hydrogen stack 12 is used to generate voltage through hydrogen and transmit the generated voltage to the voltage regulation module 13. The voltage regulation module 13 regulates the voltage to the target voltage, and the target voltage is used to supply power to the PTC 14, air compressor 15, water pump 16, and electric system 10.

[0031] It can be understood that when the vehicle starts in the distributed high-voltage architecture provided by the embodiments of the present application, the power battery in the electric system 10 is powered on to output high voltage and supply power to the high-voltage electrical appliances of the vehicle through the high-voltage bus. At the same time, the hydrogen fuel system 11 needs to work properly. At this time, accessories such as the PTC 14, air compressor 15, and voltage regulation module 13 required for the start of the hydrogen fuel system 11 are started under the action of the high voltage provided by the power battery, so as to ensure the start of the hydrogen stack 12, so that hydrogen can react to output voltage. The voltage output by the hydrogen stack 12 is regulated to the target voltage by the voltage regulation module 13, that is, regulated to a voltage that matches (is the same as) the voltage provided by the power battery.

[0032] Therefore, in specific implementation, the electric system 10 can store and release electric energy. When the vehicle starts, it releases electric energy to supply power to various devices such as the hydrogen stack 12, and it is another main power source for the output power of the hybrid vehicle. After the vehicle starts, in addition to being able to charge by connecting to an external charging device, the electric system 10 can also charge by obtaining the electric energy output by the hydrogen fuel system 11. During the driving process of the vehicle, when the motor needs energy for rapid acceleration, the hydrogen fuel system 11 and the electric system 10 output power together, ensuring the power performance of the whole vehicle. In addition, when the hybrid vehicle is in a situation where external charging cannot be carried out for a long time, the electric system 10 can operate normally and discharge outward through the charging of the hydrogen fuel system 11.

[0033] In some optional embodiments, based on the distributed high-voltage mechanism provided by the embodiments of the present application, a Boost boost module 17 is additionally provided. Figure 2 A schematic structural diagram of another hydrogen-electric hybrid system provided by the embodiments of the application, as Figure 2 shown, the hydrogen fuel system 11 further includes a Boost boost module 17, and the input end of the Boost boost module 17 is connected to the output end of the voltage regulation module 13. The output end of the Boost boost module 17 is connected to the electric system 10 and is used to boost the voltage output by the voltage regulation module 13 and supply it to the electric system 10.

[0034] In a specific embodiment, the high-voltage electricity provided by the electric system 10 can be different high-voltage electricity such as 400 volts (V) or 800V, and the hydrogen fuel system 11 mostly provides 400V high voltage. That is, most of the devices in the hydrogen fuel system 11 are selected as 400V devices. Therefore, when the electric system 10 provides other high-voltage electricity such as 800V, there will be a problem of matching between the hydrogen fuel system 11 and the electric system 10. If all the devices in the hydrogen fuel system 11 are re-selected and designed, it will inevitably cause an increase in design costs. Therefore, in order to expand the matching range between the hydrogen fuel system 11 and the electric system 10, on the basis of the distributed high-voltage architecture in the embodiment of the present application, a Boost boost module 17 is additionally designed.

[0035] Specifically, when the hydrogen fuel system 11 outputs 400V voltage and the electric system 10 outputs 800V voltage, the 400V voltage can be boosted to 800V voltage by the Boost boost module 17 and then provided to the electric system 10.

[0036] In some alternative embodiments, as Figure 2 shown, when the Boost boost module 17 and the voltage regulation module 13 are distributed, the output end of the voltage regulation module 13 is connected to the input end of the Boost boost module 17 and is connected to the air compressor 15, PTC 14, and water pump 16. At this time, the voltages received by the air compressor 15, PTC 14, and water pump 16 are less than the voltage at the input end of the Boost boost module 17. For example, the air compressor 15, PTC 14, and water pump 16 receive 400V voltage, while the Boost boost module 17 outputs 800V voltage.

[0037] When the Boost boost module 17 and the voltage regulation module 13 are integrated modules, the output end of the voltage regulation module 13 is connected to the input end of the Boost boost module 17, and the output end of the Boost boost module 17 is respectively connected to the electric system 10, the air compressor 15, PTC 14, and the water pump 16. At this time, the electric system 10, the air compressor 15, PTC 14, and the water pump 16 all receive the high-voltage electricity boosted by the Boost boost module 17. For example, they all receive 800V voltage boosted by the Boost boost module 17.

[0038] It should be noted that the water pump 16 can be a high-pressure water pump or a low-pressure water pump, and the present application does not make any limitations in this regard. It can be understood that the water pump 16 is used to drive the coolant and / or hydrogen to be transported to the hydrogen stack 12, ensuring that the hydrogen stack 12 works at the optimal temperature while improving the working efficiency of the hydrogen stack 12, that is, improving the efficiency of the hydrogen stack 12 in generating voltage. Therefore, as a preferred embodiment, the water pump 16 is preferably a high-pressure water pump.

[0039] When the water pump 16 is a low-pressure water pump, the target voltages regulated by the voltage regulation module 13 include low voltage and high voltage, that is, the voltage value is less than the voltage value transmitted by the hydrogen stack 12, so as to supply power to the low-pressure water pump, and the high voltage is supplied to the air compressor 15 and the PTC 14.

[0040] Therefore, in the hydrogen-electric hybrid system provided by the embodiments of the present application, the hydrogen stack 12, the voltage regulation module 13, the PTC 14, the air compressor 15, and the water pump 16 in the hydrogen fuel system 11 are distributed to construct a distributed high-voltage hydrogen-electric hybrid system, avoiding the problem of excessive single volume when integrating the hydrogen stack 12, the voltage regulation module 13, the PTC 14, the air compressor 15, and the water pump 16, thereby reducing the requirements for the space layout of the whole vehicle and reducing the maintenance cost and difficulty of the hydrogen-electric hybrid system.

[0041] In a preferred embodiment, Figure 3 FIG. is a schematic structural diagram of a hydrogen-electric hybrid system provided by another embodiment of the application, as Figure 3 shown, the voltage regulation module 13 includes a DC boost module (DCF) 130 and a DC buck module (DCL) 131, and the DCF 130 and the DCL 131 are distributed.

[0042] As Figure 3 shown, under the distributed setting of the DCF 130 and the DCL 131, the input end of the DCF 130 is connected to the hydrogen stack 12, the output end of the DCF 130 is connected to the PTC 14, the air compressor 15, and the electric system 10, and is connected to the input end of the DCL 131, and the output end of the DCL131 is connected to the water pump 16.

[0043] It can be understood that when the water pump 16 is a high-pressure water pump, the high-pressure water pump is connected to the output end of the DCF 130. If the water pump 16 is a low-pressure water pump, then as Figure 3 shown, the low-pressure water pump is connected to the output end of the DCL 131, and the DCL 131 steps down the voltage output by the DCF 130 and supplies it to the low-pressure water pump to supply power to the low-pressure water pump.

[0044] In some alternative embodiments, under the distributed high-voltage architecture of the hydrogen fuel system 11, after adding a Boost boost module 17 as Figure 3 shown, if the DCF 130, the DCL 131, and the Boost boost module 17 are distributed, then as Figure 3As shown, the output terminals of the DCF 130 are respectively connected to the input terminals of the PTC 14, the air compressor 15, the Boost boost module 17, and the DCL 131. Similarly, when the water pump 16 is a high-pressure water pump, the output terminal of the DCF 130 is also connected to the high-pressure water pump. When the water pump 16 is a low-pressure water pump, the low-pressure water pump is connected to the output terminal of the DCL 131. In addition, as Figure 3 shown, the output terminal of the Boost boost module 17 is connected to the electric system 10.

[0045] It can be understood that in this embodiment, the DCF 130 boosts the voltage output by the hydrogen stack 12 and then transmits it to accessories such as the PTC 14, the air compressor 15, the Boost boost module 17, and the DCL 131 to supply power to each accessory. Further, the Boost boost module 17 further boosts the voltage transmitted by the DCF 130 and provides it to the electric system 10. Among them, in some optional embodiments, the voltage boosted by the Boost boost module 17 is the same as the voltage provided by the electric system 10.

[0046] Figure 4 The following is a schematic structural diagram of another hydrogen-electric hybrid system provided by another embodiment of the present application. In some optional embodiments, in order to reduce the difficulty of space layout and at the same time reduce the space volume of the hydrogen fuel system 11, as Figure 4 shown, the Boost boost module 17 and the DCF 130 are integrated into a first integrated module 18.

[0047] The input terminal of the DCF 130 is connected to the hydrogen stack 12, the output terminal of the DCF 130 is connected to the input terminal of the Boost boost module 17, and the output terminal of the Boost boost module 17 serves as the output terminal of the first integrated module 18 and is respectively connected to the input terminals of the electric system 10, the PTC 14, the air compressor 15, and the DCL 131.

[0048] It can be understood that in this embodiment, when the electric system 10 provides 800V high voltage, the voltage generated by the hydrogen stack 12 through hydrogen reaches 800V after being boosted twice by the DCF 130 and the Boost boost module 17 in the first integrated module 18 and is provided to accessories such as the PTC 14, the air compressor 15, and the DCL 131.

[0049] In some alternative embodiments, to further reduce the spatial layout volume of the hydrogen fuel system 11, the Boost boost module 17, DCF 130, and DCL 131 are integrated into a second integrated module. Similarly, the input end of the DCF 130 is connected to the hydrogen stack 12, the output end of the DCF 130 is connected to the input end of the Boost boost module 17, the output end of the Boost boost module 17 is respectively connected to the input ends of the electric system 10, PTC 14, air compressor 15, and DCL 131. In addition, the output end of the DCL 131 is connected to the water pump 16 (selected as a low-pressure water pump).

[0050] It can be understood that in the first integrated module 18, the output end of the Boost boost module 17 is used as the output end of the first integrated module 18, while in the second integrated module, both the output end of the Boost boost module 17 and the output end of the DCL 131 are used as the output ends of the second integrated module, and the attached components connected are different.

[0051] In some other alternative embodiments, the DCL 131 can be connected to multiple low-voltage accessories such as the water pump 16 and provide power supply with different voltage values for each different accessory. The low-voltage accessory can be 12V, or 24V, or 48V, etc. The present application does not make specific limitations on this.

[0052] Furthermore, in some alternative embodiments, the DCL 131 can be integrated with the on-vehicle charger (ODP) in the electric system 10. Specifically, it is integrated with the vehicle converter (DCDC) in the on-vehicle charger. The integrated module can supply power to the water pump 16, the battery 23 in the electric system 10, and other low-voltage accessories.

[0053] Figure 5 This is a schematic structural diagram of another hydrogen-electric hybrid system provided by another embodiment of the present application. As Figure 5 shown, the electric system 10 includes: a power battery 19, a compressor 20, a second heater (PTC) 21, an ODP 22, a battery 23, and a drive motor 24. To make those skilled in the art more clearly understand the working principle of the hydrogen-electric hybrid system in the present application, the embodiments of the present application are combined with Figure 5 and taking the Boost boost module 17, DCF 130, and DCL 131 as being distributed as an example for detailed description.

[0054] As Figure 5As shown in the figure, when the vehicle starts, the power battery 19 starts to provide electrical energy for the compressor 20, PTC 21, ODP 22, battery 23, and drive motor 24. In addition, the electrical energy is transmitted by the Boost boost module 17 to the air compressor 15, PTC 14, DCL 131, and water pump 16 that are necessary for starting the hydrogen stack 12. When the air compressor 15, PTC 14, DCL 131, and water pump 16 are started by the electrical energy provided by the power battery 19, the hydrogen stack 12 is started to generate voltage through hydrogen.

[0055] Furthermore, the hydrogen stack 12 transmits the generated voltage to the air compressor 15, PTC 14, DCL 131, and water pump 16. At the same time, the voltage is also transmitted to the Boost boost module 17 for boosting and then provided to the power battery 19. At this time, the hydrogen fuel system 11 and the electric system 10 jointly provide energy for the drive motor 24 to ensure the normal driving of the vehicle. Thus, the control system of the vehicle with the hydrogen-electric hybrid system can control the hydrogen fuel system 11 and the electric system 10 to supply power to the drive system of the vehicle with the hydrogen-electric hybrid system according to the specific power situation of the hydrogen-electric hybrid system. In addition, in addition to being able to control the hydrogen fuel system 11 and the electric system 10 to supply power to the drive system at the same time to give full play to the performance advantages of both, the control system can also control the hydrogen fuel system 11 and the electric system 10 to supply power to the drive system separately, and flexibly change to adapt to different working conditions.

[0056] Figure 6 The figure is a schematic structural diagram of a hydrogen-electric hybrid system provided by another embodiment of the present application. It should be noted that Figure 6 in the figure, the thick solid line is the high-voltage connection line, the thin solid line is the hydrogen addition transmission channel, and the dotted line is the communication connection.

[0057] As a preferred embodiment, in order to improve the comfort of the vehicle, as Figure 6 shown in the figure, the hydrogen stack 12 and the DCF 130 are both arranged in the front engine compartment of the vehicle, and the DCF 130 is arranged adjacent to the hydrogen stack 12. In addition, in order to ensure the safety and reliability of the hydrogen-electric hybrid system, the hydrogen-electric hybrid system provided by the embodiment of the present application includes a high-voltage connection line. It can be understood that the high-voltage connection line is used to realize the connection of the components in the hydrogen-electric hybrid system.

[0058] Specifically, in order to control the design cost and ensure the safety of the hydrogen fuel system 11, the hydrogen stack 12 and the DCF 130 are arranged adjacent to each other, that is, there are no other components between the hydrogen stack 12 and the DCF 130, that is, the straight-line distance between the hydrogen stack 12 and the DCF 130 is less than a preset value, or the length of the high-voltage connection line connecting the hydrogen stack 12 and the DCF 130 is less than a preset length, where the preset value and the preset length are as small as possible to achieve the purpose of arranging the hydrogen stack 12 and the DCF 130 adjacent to each other.

[0059] In addition, to avoid the high-voltage connection line having a large radius due to a large current, which leads to difficult layout of the high-voltage connection line and occupies a large space position. Therefore, in order to further improve the safety of the hydrogen fuel system 11 and reduce the layout difficulty of the high-voltage connection line, as a preferred embodiment, the high-voltage connection line includes a copper busbar, and the copper busbar is used to connect the DCF 130 and the hydrogen stack 12. In some alternative embodiments, the high-voltage connection line connecting the DCF 130 and the hydrogen stack 12 is four copper busbars with an area of 50 square millimeters.

[0060] Thus, in the hydrogen-electric hybrid system provided by the embodiments of the present application, both the hydrogen stack 12 and the DCF 130 are arranged in the front engine compartment of the vehicle, and the DCF 130 is arranged adjacent to the hydrogen stack 12. In addition, the hydrogen-electric hybrid system provided by the embodiments of the present application includes a high-voltage connection line, the high-voltage connection line includes a copper busbar, and the high-voltage connection line connects the DCF 130 and the hydrogen stack 12, taking into account both vehicle comfort and safety.

[0061] In another preferred embodiment, as Figure 6 shown, the DCL131, PTC 14, air compressor 15, and water pump 16 are all arranged in the front engine compartment to avoid excessive wiring of the hydrogen fuel system 11 and reduce the design cost.

[0062] It can be understood that, in order to reduce the use of high-voltage connection lines, in specific embodiments, the DCL131, PTC14, air compressor 15, and water pump 16 are arranged as close as possible to the hydrogen stack 12. At the same time, to ensure vehicle comfort, the hydrogen stack 12, DCF 130, DCL131DCL131, PTC 14, air compressor 15, and water pump 16 are all arranged in the front engine compartment.

[0063] To further improve the safety and comfort of the hydrogen fuel system 11, in some alternative embodiments, as Figure 6 shown, the hydrogen stack 12, DCF 130, air compressor 15, and water pump 16 are all arranged in front of the front drive shaft 26, and the DCL131 and PTC 14 are arranged behind the front drive shaft 26. Specifically, the front of the front drive shaft 26 is in the forward direction of the vehicle, and the rear of the front drive shaft 26 is in the reverse (backward) direction of the vehicle.

[0064] In some alternative embodiments, the DCF 130 includes a boost unit 1300 and a power distribution unit (PDU) 1301. In specific embodiments, in order to avoid excessive inlets and outlets and reduce the number of high-voltage connectors, as a preferred embodiment, the boost unit 1300 and the power distribution unit 1301 are integrated into an integrated module.

[0065] Figure 7The structural schematic diagram of another hydrogen-electric hybrid system provided by another embodiment of the present application. Specifically, as Figure 7 shown, the input end of the boost unit 1300 is connected to the hydrogen stack 12, and the output end of the boost unit 1300 is connected to the input end of the power distribution unit 1301. It can be understood that the boost unit 1300 is used to boost the voltage provided by the hydrogen stack 12.

[0066] As Figure 7 shown, the output end of the power distribution unit 1301 serves as the output end of the DCF 130, and is respectively connected to the input ends of the PTC 14, the air compressor 15, the Boost boost module 17, and the input end of the DCL131. It can be understood that in this embodiment, the Boost boost module 17, the DCF 130, and the DCL131 are distributed.

[0067] Figure 8 The structural schematic diagram of yet another hydrogen-electric hybrid system provided by another embodiment of the present application. As Figure 8 shown, if the Boost boost module 17 and the DCF 130 are integrated modules, and this integrated module and the DCL131 are distributed, or, when the Boost boost module 17, the DCF 130, and the DCL131 are integrated modules, the input end of the boost unit 1300 is connected to the hydrogen stack 12, the output end of the boost unit 1300 is connected to the input end of the power distribution unit 1301, the output end of the power distribution unit 1301 is connected to the input end of the Boost boost module 17, and the output end of the Boost boost module 17 is respectively connected to the input ends of the PTC 14, the air compressor 15, and the DCL131.

[0068] In some alternative embodiments, the PDU (power distribution component) in the DCF 130 is shared with the PDU in the ODP 22 of the electric system 10, that is, the PDU in the DCF 130 is shared with the vehicle PDU. It can be understood that the PDU is a power distribution device, and the PDU is connected to multiple accessories to supply power to the accessories, and the PDU provides a fuse switch for each accessory to avoid abnormal situations such as overload and short circuit.

[0069] Therefore, when the PDU in the DCF 130 is shared with the vehicle PDU, at least one of the accessories (including the PTC 14, the air compressor 15, and the DCL131) connected to the DCF 130 is connected through the vehicle PDU. In a specific embodiment, when the hydrogen-electric hybrid system is powered on, the power battery 19 in the electric system 10 transmits electrical energy to the ODP 22, and the vehicle PDU in the ODP 22 distributes the electrical energy to the PTC 14, and / or the air compressor 15, and / or accessories such as the DCL131, so that after the PTC 14, the air compressor 15, and the DCL131 are started, the hydrogen stack 12 can be started.

[0070] It should be noted that when the PDU in the DCF 130 shares the same use with the vehicle PDU, the PTC 14, and / or the air compressor 15, and / or the DCL 131 can share an insurance switch with the original accessories in the vehicle PDU, or can use an independent insurance switch. When sharing an insurance switch, an insurance switch with a corresponding power needs to be selected according to the actual device type. When all the accessories connected to the vehicle PDU use an independent insurance switch, a vehicle PDU with a corresponding number of insurance switches needs to be selected according to the actual requirements.

[0071] In an alternative embodiment, as Figure 6 shown, the hydrogen-electric hybrid system provided by the present application further includes a hydrogen supply system, the hydrogen supply system is connected to the hydrogen stack 12, and the hydrogen supply system is used to supply hydrogen to the hydrogen stack 12. The electric system 10 includes an ODP 22 and a power battery 19, and the power battery 19 is connected to the ODP 22 for supplying electrical energy to the ODP 22.

[0072] In a specific embodiment, in order to prevent the hydrogen supply system from exploding when an accident occurs to the vehicle (for example, colliding with other vehicles), as a preferred embodiment, the hydrogen supply system is arranged at the rear of the vehicle. It can be understood that when the vehicle has a rear-end collision (the front of the vehicle collides with the rear of other vehicles), or is rear-ended (the rear of the vehicle is collided by other vehicles), the impact force received by the rear of the vehicle is less than the impact force received by the front of the vehicle. Therefore, arranging the hydrogen supply system at the rear of the vehicle has higher safety.

[0073] In addition, since the area of the vehicle cockpit floor is relatively large, therefore, as Figure 6 shown, the ODP 22 is arranged in the central area of the vehicle cockpit. Since the power battery 19 needs to supply power to multiple accessories when the vehicle starts, in order to reduce the wiring layout of the hydrogen-electric hybrid system, as Figure 6 shown, the power battery 19 is arranged on the lower floor on the co-pilot side of the vehicle, and a part is located in the front engine compartment of the vehicle, and another part is located in the vehicle cockpit. Thus, the relatively large space position of the cockpit floor can be fully utilized, the comfort of the vehicle can be ensured, and the difficulty of the overall system space layout can be reduced.

[0074] On the basis of the above embodiments, in order to further prevent the hydrogen supply system from exploding when an accident occurs to the vehicle and improve the overall safety of the vehicle, as a preferred embodiment, the hydrogen-electric hybrid system provided by the present application further includes a U-shaped reinforcing beam, wherein the U-shaped reinforcing beam is arranged between the hydrogen supply system and the rear of the vehicle and is fixed on the rear suspension of the vehicle. In the embodiments of the present application, the specific structure of the U-shaped reinforcing beam is not specifically limited.

[0075] That is, in order to prevent the hydrogen supply system from being squeezed and exploding when the vehicle is rear-ended, a U-shaped reinforcing beam is provided at the rear of the vehicle hydrogen supply system (i.e., the direction in which the vehicle reverses). Thus, when a collision occurs at the rear of the vehicle, the U-shaped reinforcing beam receives the impact force brought by the collision, preventing the hydrogen supply system from being squeezed and exploding.

[0076] To ensure the efficiency of the functions of the hydrogen fuel system 11, in some alternative embodiments, as Figure 6 shown, the hydrogen supply system includes a first hydrogen supply system 32 and a second hydrogen supply system 33. The first hydrogen supply system 32 is disposed in the driver's cab of the vehicle, and the second hydrogen supply system 33 is disposed in the luggage compartment of the vehicle. The U-shaped reinforcing beam is disposed behind the second hydrogen supply system 33, that is, between the second hydrogen supply system 33 and the rear of the vehicle.

[0077] As Figure 6 shown, in some alternative embodiments, the hydrogen-electric hybrid system provided by the embodiments of the present application further includes a vehicle controller 29. The vehicle controller 29 is connected to a hydrogen system controller (FCU) 27. The vehicle controller 29 is disposed on one side of the driver's cab of the vehicle, and a part of it is located in the front engine compartment of the vehicle, and another part is located in the driver's cab of the vehicle.

[0078] In an alternative embodiment, as Figure 6 shown, the electric system 10 includes an air conditioning system (AC) 25, a wire splitter 30, a second heater (PTC) 21, and a third heater (PTC) 31.

[0079] The ODP 22 is connected to the power battery 19, and the ODP 22 is respectively connected to the PTC 21 and the AC 25 through the wire splitter 30 to supply power to the PTC 21 and the AC 25. In some alternative embodiments, the PTC 21 and the AC 25 are disposed in the front engine compartment of the vehicle.

[0080] As Figure 6 shown, the PTC 31 is connected to the ODP 22 to achieve power supply to the PTC 31. In addition, the PTC 31 is disposed on the lower floor on the co-driver side of the vehicle, and a part of it is located in the driver's cab of the vehicle, and another part is located in the luggage compartment of the vehicle.

[0081] In addition, in some alternative embodiments, as Figure 6 shown, the hydrogen-electric hybrid system provided by the embodiments of the present application further includes a hydrogen system controller (FCU) 27 and an air compressor controller 28.

[0082] The air compressor controller 28 is connected to the air compressor 15 and is used to control the working state of the air compressor 15. Both the FCU 27 and the air compressor controller 28 are arranged in the front engine compartment of the vehicle, and the FCU 27 is arranged adjacent to the hydrogen stack 12, that is, the FCU 27 is arranged between the hydrogen stack 12 and the power battery 19.

[0083] The FCU 27 is respectively communicatively connected to the hydrogen stack 12, the water pump 16 and the air compressor controller 28, and is connected (low-voltage connection) to the PTC 21, PTC31 and AC 25. In a specific embodiment, the vehicle controller 29 is respectively communicatively connected to all components such as the FCU 27, the air compressor controller 28, the DCF 130, DCL131, the water pump 16, the air compressor 15, the power battery 19, the electric drive integrated unit 34, the PTC 21, PTC 31 and AC 25, and is used to control the working states of each component.

[0084] Among them, the electric drive integrated unit 34 refers to a technology that integrates electric control, electric motor and reducer.

[0085] As a preferred embodiment, as Figure 6 shown, the PTC 21, AC 25, hydrogen stack 12 and FCU 27 are all arranged on the driver's side of the vehicle, and the DCF 130, air compressor 15, water pump 16, PTC 14 and air compressor controller 28 are arranged on the co-driver's side of the vehicle.

[0086] In a specific embodiment, the hydrogen filling port 35 can be arranged on the driver's side or the co-driver's side. Similarly, the charging ports of the power battery 19 (including the slow charging port 36 and the fast charging port 37) can be arranged on the driver's side or the co-driver's side. In order to optimize the space layout and reduce the layout of connecting wires, as a preferred embodiment, the hydrogen filling port 35 and the charging port are arranged on different sides. For example, the hydrogen filling port 35 is arranged on the co-driver's side and the charging port is arranged on the driver's side.

[0087] It can be understood that the thin solid line is the hydrogen transmission path, that is, as Figure 6 shown, after hydrogen is filled from the hydrogen filling port 35, the hydrogen is transmitted to the first hydrogen supply system 32 and the second hydrogen supply system 33, and then the first hydrogen supply system 32 and the second hydrogen supply system 33 transmit the hydrogen to the hydrogen stack 12.

[0088] It should be noted that Figure 6The device in [description] also includes some low-voltage connection relationships. For example, the vehicle controller 29 and the battery 23 are in low-voltage connection. There are low-voltage connection relationships between the ODP 22 and devices such as the power battery 19, PTC 21, AC 25, PTC 31, air compressor 15, and water pump 16. In addition, there are other low-voltage connection relationships between devices, which will not be elaborated here.

[0089] The hydrogen-electric hybrid system has been described in detail in the above embodiments. An embodiment of the present application also provides a vehicle, which includes a drive motor and the hydrogen-electric hybrid system in any of the above embodiments. Among them, the hydrogen-electric hybrid system is connected to the drive motor and is used to supply power to the drive motor.

[0090] Since the vehicle provided in the embodiment of the present application corresponds to the hydrogen-electric hybrid system provided in the above embodiment, the description of the vehicle provided in the embodiment of the present application can refer to the description of the above embodiment and will not be elaborated here for the time being.

[0091] Although this specification contains many specific implementation details, these should not be construed as limiting the scope of any invention or the scope of what is claimed, but are mainly used to describe the features of specific embodiments of a particular invention. Certain features described in multiple embodiments in this specification can also be implemented in combination in a single embodiment. On the other hand, the various features described in a single embodiment can also be implemented separately in multiple embodiments or in any suitable sub-combination. In addition, although features may function in certain combinations as described above and are even initially claimed as such, one or more features from the claimed combination can in some cases be removed from the combination, and the claimed combination can be directed to a sub-combination or a variation of the sub-combination.

[0092] In addition, the separation of the various system modules and components in the above embodiments should not be understood as required in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.

[0093] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

Claims

1. A hydrogen-electric hybrid system, characterized in that, The system includes: an electric system, a hydrogen stack, a voltage regulation module, a first heater, an air compressor, and a water pump; wherein, the voltage regulation module, the first heater, the air compressor, and the water pump are distributedly arranged; The hydrogen stack is used to generate voltage through hydrogen; The voltage regulation module is connected to the hydrogen stack, and is also connected to the water pump, the first heater, the air compressor, and the electric system; The voltage regulation module is used to regulate the voltage generated by the hydrogen stack to a target voltage to supply power to the first heater, the air compressor, the water pump, and the electric system.

2. The hydrogen-electric hybrid system according to claim 1, wherein, The voltage regulation module includes a DC boost module and a DC buck module, and the DC boost module and the DC buck module are distributedly arranged; The input end of the DC boost module is connected to the hydrogen stack, the output end of the DC boost module is connected to the first heater, the air compressor, and the electric system, and is also connected to the input end of the DC buck module; The output end of the DC buck module is connected to the water pump.

3. The hydrogen-electric hybrid system according to claim 2, characterized in that, Both the hydrogen stack and the DC boost module are arranged in the front engine compartment of the vehicle, and the DC boost module is arranged adjacent to the hydrogen stack.

4. The hydrogen-electric hybrid system according to claim 3, wherein The hydrogen-electric hybrid system includes a high-voltage connection line, the high-voltage connection line includes a copper busbar, and the high-voltage connection line connects the DC boost module and the hydrogen stack.

5. The hydrogen-electric hybrid system according to claim 3, wherein The DC buck module, the first heater, the air compressor, and the water pump are all arranged in the front engine compartment.

6. The hydrogen-electric hybrid system according to claim 5, wherein The hydrogen stack, the DC boost module, the air compressor, and the water pump are all arranged in front of the front drive shaft, and the DC buck module and the first heater are arranged behind the front drive shaft.

7. The hydrogen-electric hybrid system according to any one of claims 2, 3, and 6, characterized in that, The DC boost module includes a boost unit and a power distribution unit, wherein the boost unit and the power distribution unit are integrated modules; The input end of the boost unit is connected to the hydrogen stack, the output end of the boost unit is connected to the input end of the power distribution unit, the output end of the power distribution unit is connected to the first heater, the air compressor, and the electric system, and is also connected to the input end of the DC buck module.

8. The hydrogen-electric hybrid system according to any one of claims 1-6, characterized in that, The system further includes a hydrogen supply system, the hydrogen supply system is connected to the hydrogen stack and is used to supply hydrogen to the hydrogen stack; the electric system includes an on-vehicle charger and a power battery, and the power battery is connected to the on-vehicle charger and is used to supply electric energy to the on-vehicle charger; The hydrogen supply system is arranged at the tail of the vehicle, the on-vehicle charger is arranged in the central area of the vehicle cockpit, the power battery is arranged on the lower floor on the co-pilot side of the vehicle, and a part of it is located in the front engine compartment of the vehicle and another part is located in the vehicle cockpit.

9. The hydrogen-electric hybrid system according to claim 8, wherein The system further includes a U-shaped reinforcing beam; the U-shaped reinforcing beam is arranged between the hydrogen supply system and the tail of the vehicle and is fixed on the rear suspension of the vehicle; and / or The hydrogen supply system includes a first hydrogen supply system and a second hydrogen supply system; the first hydrogen supply system is arranged in the vehicle cockpit, and the second hydrogen supply system is arranged in the vehicle luggage compartment; and / or The system further includes a vehicle controller and a hydrogen system controller; the vehicle controller is connected to the hydrogen system controller; the vehicle controller is disposed on one side of the cab of the vehicle, and a part thereof is located in the front engine compartment of the vehicle, and another part is located in the cockpit of the vehicle.

10. The hydrogen-electric hybrid system according to claim 8, wherein, The electric system further includes: an air conditioning system, a wire splitter, a second heater, and a third heater; The on-vehicle charger is respectively connected to the second heater and the air conditioning system through the wire splitter, and the second heater and the air conditioning system are disposed in the front engine compartment of the vehicle; The third heater is connected to the on-vehicle charger, and the third heater is disposed on the lower floor on the co-driver side of the vehicle, and a part thereof is located in the cockpit of the vehicle, and another part is located in the luggage compartment of the vehicle.

11. The hydrogen-electric hybrid system according to claim 10, characterized in that, The system further includes a hydrogen system controller and an air compressor controller; The air compressor controller is connected to the air compressor and is used to control the working state of the air compressor; The hydrogen system controller and the air compressor controller are disposed in the front engine compartment of the vehicle; The hydrogen system controller is disposed between the hydrogen stack and the power battery, and the hydrogen system controller is respectively connected to the hydrogen stack, the water pump, and the air compressor controller, and is connected to the second heater, the third heater, and the air conditioning system.

12. The hydrogen-electric hybrid system according to claim 11, characterized in that, The second heater, the air conditioning system, the hydrogen stack, and the hydrogen system controller are disposed on one side of the cab of the vehicle; The DC boost module, the air compressor, the water pump, the first heater, and the air compressor controller are disposed on the co-driver side of the vehicle.

13. A vehicle, characterized in that, The vehicle includes: a drive motor and the hydrogen-electric hybrid system according to any one of claims 1-12, and the hydrogen-electric hybrid system is connected to the drive motor and is used to supply power to the drive motor.

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