WO2022020999A1

WO2022020999A1 - Power supply apparatus, vehicle and device

Info

Publication number: WO2022020999A1
Application number: PCT/CN2020/104874
Authority: WO
Inventors: 张辉; 吴壬华; 宋安国
Original assignee: 深圳欣锐科技股份有限公司
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2022-02-03
Also published as: CN112912268B; CN112912268A

Abstract

A power supply apparatus, a vehicle and a device. An integrated electric energy conversion apparatus comprises a DCF module and a bidirectional OBC module. The integrated electric energy conversion apparatus further comprises any one of a low-voltage direct-current converter (DCL) module, a high-voltage direct-current converter (DCH) module and a power distribution unit (PDU) module. The PDU module is respectively connected to the bidirectional OBC module and the DCF module; the DCL module is used for converting a first direct current in a power battery from a first voltage to a second voltage to obtain a second direct current, so that the second direct current is used for supplying power to a first power utilization module, wherein the first voltage is larger than the second voltage; and the DCH module is used for converting the first direct current in the power battery from the first voltage to a third voltage to obtain a third direct current, so that the third direct current is used for supplying power to a second power utilization module, wherein the first voltage is smaller than the third voltage. The apparatus can improve use efficiency.

Description

A power supply device, vehicle and equipment

technical field

The embodiments of the present application relate to the technical field of automobiles, and in particular, to a power supply device, a vehicle, and equipment.

Background technique

With the continuous development of electric vehicle technology, fuel cell vehicles (FCVs) have become recognized as the most promising new energy vehicles in the future due to their zero-pollution characteristics. In the power system of FCV, the bidirectional on-board charger OBC, the DC converter DCF, the low voltage converter DCL, the high voltage converter DCH and the power distribution unit PDU are the important components to realize the power conversion in the FCV. The OBC, DCF, DCL, DCH and PDU in the existing FCV are prone to low usage efficiency due to disordered layout and complicated circuit.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a power supply device, a vehicle, and a device, which can improve the use efficiency.

A first aspect provides an integrated power conversion device, comprising a DC/DC converter for fuel cell (DCF) module and a bidirectional on-board charger (OBC) module, the integrated power conversion device further includes a low-voltage Any one of a low voltage DC/DC converter (DCL) module, a high voltage DC/DC converter (DCH) module, and a power distribution unit (PDU) module, wherein:

The PDU module is respectively connected with the bidirectional OBC module and the DCF module;

The DCL module is used to convert the first direct current from the first voltage to the second voltage to obtain the second direct current, and use the second direct current to supply power to the first power consumption module, and the first voltage is greater than the second voltage;

The DCH module is used to convert the first direct current from the first voltage to the third voltage to obtain the third direct current, and use the third direct current to supply power to the second power consumption module, and the first voltage is lower than the third voltage.

In a possible implementation manner, the integrated power conversion device may further include any two modules among the DCL module, the DCH module and the PDU module, wherein:

The PDU module is connected to the DCL module, the bidirectional OBC module and the DCF module respectively; or

The PDU module is respectively connected with the DCH module, the bidirectional OBC module and the DCF module.

In a possible implementation manner, the integrated power conversion device may further include a DCL module, a DCH module and a PDU module, wherein:

The PDU module is respectively connected with the DCL module, the DCH module, the bidirectional OBC module and the DCF module.

In a possible implementation, the PDU module may further include a monitoring circuit:

The monitoring circuit is used to measure the current of the branch, and when the current of the branch is greater than the threshold, the branch is disconnected, and the branch is any one of the bidirectional OBC module, DCF module, DCL module and DCH module and the PDU module. connected branch.

In a possible implementation manner, the monitoring circuit is further configured to output prompt information for prompting that the branch is disconnected.

In a possible implementation manner, the prompt information output by the monitoring circuit for prompting the branch circuit to be disconnected includes:

The monitoring circuit outputs the prompt information for prompting branch disconnection through LED indicator light or buzzer.

A second aspect provides a power supply device, where the power supply device includes the integrated power conversion device and the fuel cell according to the first aspect or any possible implementation manner of the first aspect.

A third aspect provides a vehicle, which includes the integrated electrical energy conversion device of the first aspect or any possible implementation manner of the first aspect.

A fourth aspect provides a device, the device includes the integrated power conversion device described in the first aspect or any possible implementation manner of the first aspect, a motor, a power battery, a first power consumption module, and a second power consumption module .

In this application, the integrated power conversion device includes a DCF module and a bidirectional OBC module, and may also include any one of a DCL module, a DCH module, and a PDU module, and the PDU module can be connected to the bidirectional OBC module and the DCF module, respectively. It can be seen that on the basis of the integration of the DCF module and the bidirectional OBC module, any one of the DCL module, the DCH module and the PDU module can be integrated together, thereby improving the use efficiency of the power conversion device.

Description of drawings

FIG. 1 is a schematic structural diagram of an integrated power conversion device provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a fuel cell system provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram of another integrated power conversion device provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of another integrated power conversion device provided by an embodiment of the present application;

5 is a schematic structural diagram of another integrated power conversion device provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of another integrated power conversion device provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of another integrated power conversion device provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of another integrated power conversion device provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of another integrated power conversion device provided by an embodiment of the present application;

10 is a schematic structural diagram of a power supply device provided by an embodiment of the present application;

11 is a schematic structural diagram of a vehicle provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a device provided by an embodiment of the present application.

detailed description

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application.

In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only The embodiments are part of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.

Each of them will be described in detail below.

The terms "first", "second", "third" and "fourth" in the description and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

Embodiments of the present application provide an integrated power conversion device for improving use efficiency. The technical solutions in the present application will be described below with reference to the accompanying drawings.

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of an integrated power conversion device provided by an embodiment of the present application. As shown in FIG. 1 , the integrated power conversion device may include a DCF module and a bidirectional OBC module, and may also include any one of a DCL module, a DCH module, and a PDU module.

Among them, the DCF module can convert the electric energy generated by the fuel cell to supply power to the electric motor, and can also convert the electric energy generated by the fuel cell and output it to the power battery, and the power battery stores the electric energy from the fuel cell.

The fuel cell here can refer to the fuel cell system. The fuel cell system takes the fuel cell stack as the core, and uses each subsystem to supply fuel and oxidant into the stack for reaction to generate electricity and pure water, and maintain electricity through the circulation of coolant. stack temperature for power generation systems. Please refer to FIG. 2 , which is a schematic diagram of a fuel cell system architecture provided by an embodiment of the present application. The fuel cell system can be composed of an air subsystem, a hydrogen subsystem, a thermal management subsystem and a control system.

The air subsystem may include air cleaners, air compressors, air intercoolers, humidifiers, air circuit valves and other components. The air in the external environment is filtered by the filter, and reaches the gas pressure and temperature required by the stack under the cooperative work of the compressor and the intercooler, and enters the cathode side of the stack after being humidified by the humidifier if necessary. reaction. In addition, the air circuit valve is mainly used for air circuit flow distribution and pressure regulation. The hydrogen subsystem generally includes components such as hydrogen injector and hydrogen exhaust valve. The hydrogen supplied by the on-board hydrogen supply system is adjusted by the injector and enters the anode side of the stack at a certain pressure and flow rate to participate in the reaction, and the hydrogen discharge valve is opened when necessary to discharge the accumulated nitrogen and liquid water on the anode side. The thermal management subsystem generally includes cooling pumps, thermostats, radiators and other components. Under the condition of cooling liquid circulation, the heat generated by the stack reaction is discharged out of the system to maintain the proper reaction temperature of the fuel cell stack. The control subsystem generally includes a fuel cell system controller, various sensors, and various actuators. Through the real-time measurement of current, voltage, temperature, pressure and other sensors, the system controller controls the actions of each actuator according to a certain control strategy according to the current system state, so as to realize the response to the vehicle power request.

The bidirectional OBC module can be used to convert the AC power input from the external power supply into DC power and then charge the power battery. The bidirectional OBC module can also convert the power of the power battery and transmit it to the external load.

The bidirectional OBC module is equipped with 2 220VAC AC ports, one of which is a common AC charging and discharging interface (three-core standard connector), and the other is a specially set vehicle 220VAC AC power interface (three-core standard connector) , which can be used to supply power to in-vehicle electrical appliances. The working principle of the bidirectional OBC module: AC power is input from the grid, rectified into DC power by a bridge-type controllable rectifier circuit, filtered and supplied to a high-frequency DC-DC power converter. After filtering again, the power battery can be charged, and the electric energy of the power battery pack can be supplied to the home or external appliances through the bidirectional OBC module to meet the needs of power consumption such as outings and entertainment.

Illustratively, please refer to FIG. 3 , which is a schematic structural diagram of another integrated power conversion device provided by an embodiment of the present application. As shown in FIG. 3 , the integrated power conversion device may include a DCF module, a bidirectional OBC module and a DCL module. Specifically, the DCL module is configured to convert the first direct current from the first voltage to the second voltage to obtain the second direct current, and use the second direct current to supply power to the first power consumption module, and the first voltage is greater than the second voltage. Wherein, the first direct current may be electric energy stored in a power battery, and the first power consumption module may include in-vehicle low-voltage electrical equipment such as vehicle navigation, vehicle lights, instrument display devices, and driving recorders.

Illustratively, please refer to FIG. 4 , which is a schematic structural diagram of yet another integrated power conversion device provided by an embodiment of the present application. As shown in FIG. 4 , the integrated power conversion device may include a DCF module, a bidirectional OBC module and a DCH module. Specifically, the DCH module is used to convert the first direct current from the first voltage to the third voltage to obtain the third direct current, and use the third direct current to supply power to the second power consuming module, and the first voltage is lower than the third voltage. The second power consumption module may include on-board high-voltage electrical equipment such as an air conditioner compressor and a PTC heater.

Exemplarily, please refer to FIG. 5 , which is a schematic structural diagram of another integrated power conversion device provided by an embodiment of the present application. As shown in FIG. 5 , the integrated power conversion device may include a DCF module, a bidirectional OBC module and a PDU module. The PDU module is respectively connected with the bidirectional OBC module and the DCF module. Specifically, the PDU module may include a monitoring circuit, the monitoring circuit is used to measure the current of the branch, and when the current of the branch is greater than a threshold, the branch is disconnected, and the branch may be a bidirectional OBC module, a DCF module, a DCL module and a DCH A branch connecting any module of the module to the PDU module. The branch here can be the branch between the bidirectional OBC module and the PDU module, or the branch between the DCF module and the PDU module. In a specific implementation, the monitoring circuit can measure the current of the branch between the bidirectional OBC module and the PDU module, and disconnect the branch when the current of the branch between the bidirectional OBC module and the PDU module is greater than a threshold value; the monitoring circuit also The current of the branch between the DCF module and the PDU module can be measured, and when the current of the branch between the DCF module and the PDU module is greater than the threshold, the branch is disconnected. The monitoring circuit can also be used to output prompt information for prompting the branch circuit to be disconnected, and can output the prompt information for prompting the branch circuit to be disconnected through an LED indicator light or a buzzer.

In the integrated power conversion device described above, the integrated power conversion device can integrate any one of the independent DCL module, DCH module and PDU module based on the integration of two independent components, the DCF module and the bidirectional OBC module. , so that the internal space of the integrated power conversion device can be saved, and the wiring of the wiring harness can be facilitated, thereby reducing the power distribution cost of the integrated power conversion device and improving the use efficiency.

Based on the integrated power conversion device in FIG. 1 , the integrated power conversion device may include a DCF module and a bidirectional OBC module, and may also include any two modules among a DCL module, a DCH module, and a PDU module.

Illustratively, please refer to FIG. 6 , which is a schematic structural diagram of another integrated power conversion device provided by an embodiment of the present application. As shown in FIG. 6 , the integrated power conversion device may include a DCF module, a bidirectional OBC module, a DCL module and a DCH module.

Illustratively, please refer to FIG. 7 , which is a schematic structural diagram of another integrated power conversion device provided by an embodiment of the present application. As shown in FIG. 7 , the integrated power conversion device may include a DCF module, a bidirectional OBC module, a DCL module and a PDU module. The PDU module is respectively connected with the bidirectional OBC module, the DCF module and the DCL module. Specifically, the PDU module may include a monitoring circuit for measuring the current of the branch, and disconnecting the branch when the current of the branch is greater than a threshold value. The branch here may be the branch between the PDU module and the bidirectional OBC module, or the branch between the PDU module and the DCF module, or the branch between the PDU module and the DCL module. In specific implementation, the monitoring circuit can measure the current of the branch between the PDU module and the bidirectional OBC module, and when the current of the branch between the PDU module and the bidirectional OBC module is greater than the threshold, the branch is disconnected; the monitoring circuit can also measure The current of the branch between the PDU module and the DCF module, when the current of the branch between the PDU module and the DCF module is greater than the threshold, the branch is disconnected; the monitoring circuit can also measure the current of the branch between the PDU module and the DCL module , when the current of the branch between the PDU module and the DCL module is greater than the threshold, disconnect the branch. The monitoring circuit can also be used to output prompt information for prompting the branch circuit to be disconnected, and can output the prompt information for prompting the branch circuit to be disconnected through an LED indicator light or a buzzer.

Illustratively, please refer to FIG. 8 , which is a schematic structural diagram of yet another integrated power conversion device provided by an embodiment of the present application. As shown in FIG. 8 , the integrated power conversion device may include a DCF module, a bidirectional OBC module, a DCH module and a PDU module. The PDU module is respectively connected with the bidirectional OBC module, the DCF module and the DCH module. Specifically, the PDU module may include a monitoring circuit for measuring the current of the branch, and disconnecting the branch when the current of the branch is greater than a threshold value. The branch here may be the branch between the PDU module and the bidirectional OBC module, the branch between the PDU module and the DCF module, or the branch between the PDU module and the DCH module. In specific implementation, the monitoring circuit can measure the current of the branch between the PDU module and the bidirectional OBC module, and when the current of the branch between the PDU module and the bidirectional OBC module is greater than the threshold, the branch is disconnected; the monitoring circuit can also measure The current of the branch between the PDU module and the DCF module, when the current of the branch between the PDU module and the DCF module is greater than the threshold, the branch is disconnected; the monitoring circuit can also measure the current of the branch between the PDU module and the DCH module , when the current of the branch between the PDU module and the DCH module is greater than the threshold, disconnect the branch. The monitoring circuit can also be used to output prompt information for prompting the branch circuit to be disconnected, and can output the prompt information for prompting the branch circuit to be disconnected through an LED indicator light or a buzzer.

In the integrated power conversion device described above, the integrated power conversion device can be based on the integration of two independent components, the DCF module and the bidirectional OBC module, and then any two modules of the independent DCL module, DCH module and PDU module can be integrated. Therefore, the internal space of the integrated power conversion device can be saved, and the wiring of the wire harness can be facilitated, thereby reducing the power distribution cost of the integrated power conversion device and improving the use efficiency.

Based on the integrated power conversion device in FIG. 1 , the integrated power conversion device may include a DCF module and a bidirectional OBC module, and may also include a DCL module, a DCH module, and a PDU module.

Exemplarily, please refer to FIG. 9 , which is a schematic structural diagram of another integrated power conversion device provided by an embodiment of the present application. As shown in FIG. 9 , the integrated power conversion device may include a bidirectional OBC module, a DCF module, a DCL module, a DCH module and a PDU module. The PDU module is respectively connected with the bidirectional OBC module, the DCF module, the DCL module and the DCH module. Specifically, the PDU module may include a monitoring circuit for measuring the current of the branch, and disconnecting the branch when the current of the branch is greater than a threshold value. The branch here can be a branch between a bidirectional OBC module and a PDU module, a branch between a DCF module and a PDU module, a branch between a PDU module and a DCL module, or a PDU The branch between the module and the DCH module. In specific implementation, the monitoring circuit can measure the current of the branch between the PDU module and the bidirectional OBC module, and when the current of the branch between the PDU module and the bidirectional OBC module is greater than the threshold, the branch is disconnected; the monitoring circuit can also measure The current of the branch between the PDU module and the DCF module, when the current of the branch between the PDU module and the DCF module is greater than the threshold, the branch is disconnected; the monitoring circuit can also measure the current of the branch between the PDU module and the DCL module , when the current of the branch between the PDU module and the DCL module is greater than the threshold, the branch is disconnected; the monitoring circuit can also measure the current of the branch between the PDU module and the DCH module, and the branch between the PDU module and the DCH module When the current is greater than the threshold, the branch is disconnected. The monitoring circuit can also be used to output prompt information for prompting the branch circuit to be disconnected, and can output the prompt information for prompting the branch circuit to be disconnected through an LED indicator light or a buzzer.

In the integrated power conversion device described above, the integrated power conversion device can integrate the separate DCL module, DCH module and PDU module based on the integration of two independent components, the DCF module and the bidirectional OBC module, thereby saving integration The internal space of the power conversion device is convenient for the wiring of the wire harness, thereby reducing the power distribution cost of the integrated power conversion device and improving the use efficiency.

Based on the integrated power conversion device shown in FIGS. 3-9 , the present application provides a power supply device. Please refer to FIG. 10 . FIG. 10 is a schematic structural diagram of a power supply device provided by an embodiment of the present application. As shown in FIG. 10 , the power supply device may include any one of the integrated power conversion devices shown in FIGS. 3 to 9 and The fuel cell.

Based on the integrated power conversion device shown in FIGS. 3-9 , the present application provides a vehicle. Please refer to FIG. 11 , which is a schematic structural diagram of a vehicle provided by an embodiment of the present application. As shown in FIG. 11 , the vehicle may include any one of the integrated power conversion devices shown in FIGS. 3 to 9 . An integrated electrical energy conversion device may be placed inside the vehicle.

In the vehicle depicted in Figure 11, the vehicle includes an integrated electrical energy conversion device. In terms of the configuration of the integrated power conversion device, on the basis of the integration of two independent devices, the DCF module and the bidirectional OBC module, any one of the DCL module, DCH module and PDU module can be integrated to obtain a three-in-one Integrated power conversion device; can also integrate any two modules of DCL module, DCH module and PDU module to obtain a four-in-one integrated power conversion device; can also integrate three modules of DCL module, DCH module and PDU module, Get a 5-in-1 integrated power conversion unit. The weight and volume of the integrated power conversion device are relatively reduced, occupying a small space in the vehicle, which can meet the requirements of the lightweight of new energy vehicles and the maximum utilization of vehicle space, thereby improving the safety of vehicle driving.

Based on the integrated power conversion device shown in FIGS. 3-9 , the present application provides a device. Please refer to FIG. 12 , which is a schematic structural diagram of a device provided by an embodiment of the present application. As shown in FIG. 12 , the device may include an integrated power conversion device, an electric motor, a power battery, a first power consumption module and a second power consumption module. For each module in the structure shown in FIG. 12 , please refer to the descriptions in FIG. 3 to FIG. 9 above, which will not be repeated here.

It should be noted that, for the sake of simple description, the foregoing method embodiments are all expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the described action sequence. Because in accordance with the present application, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

In the embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the device embodiments described above are only illustrative. For example, the division of the above modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated. to another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical or other forms.

The modules described above as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place, or may be distributed to multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically alone, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.

The embodiments of the present application have been introduced in detail above, and specific examples are used to illustrate the principles and implementations of the present application. The descriptions of the above embodiments are only used to help understand the present application and its core ideas; According to the idea of the application, there will be changes in the specific implementation mode and application scope. To sum up, the content of this specification should not be construed as a limitation to the application.

Claims

An integrated power conversion device, comprising a DCF module and a bidirectional OBC module, characterized in that the integrated power conversion device further includes any one of a low-voltage DC converter DCL module, a high-voltage DC converter DCH module, and a power distribution unit PDU module module, where:

The PDU module is respectively connected with the bidirectional OBC module and the DCF module;

The DCL module is used to convert the first direct current from the first voltage to the second voltage to obtain the second direct current, and use the second direct current to supply power to the first power consumption module, and the first voltage is greater than the second direct current. two voltage;

The DCH module is used to convert the first direct current from the first voltage to a third voltage to obtain a third direct current, and use the third direct current to supply power to the second power consumption module, and the first voltage is lower than the the third voltage.
The integrated power conversion device according to claim 1, wherein the integrated power conversion device further comprises any two modules among a DCL module, a DCH module and a PDU module, wherein:

The PDU module is respectively connected with the DCL module, the bidirectional OBC module and the DCF module; or

The PDU module is respectively connected with the DCH module, the bidirectional OBC module and the DCF module.
The integrated power conversion device according to claim 1, wherein the integrated power conversion device further comprises a DCL module, a DCH module and a PDU module, wherein:

The PDU module is respectively connected with the DCL module, the DCH module, the bidirectional OBC module and the DCF module.
The integrated power conversion device according to any one of claims 1-3, wherein the PDU module further comprises a monitoring circuit:

The monitoring circuit is used to measure the current of the branch, and when the current of the branch is greater than the threshold, the branch is disconnected, and the branch is the bidirectional OBC module, the DCF module, the A branch where any one of the DCL module and the DCH module is connected to the PDU module.
The integrated power conversion device according to claim 4, wherein the monitoring circuit is further configured to output prompt information for prompting that the branch is disconnected.
The integrated power conversion device according to claim 5, wherein the prompt information output by the monitoring circuit for prompting the branch circuit to be disconnected comprises:

The monitoring circuit outputs prompt information for prompting the branch circuit to be disconnected through an LED indicator light or a buzzer.
A power supply device, characterized in that it comprises the integrated electric energy conversion device and a fuel cell according to any one of claims 1-6.
A vehicle, characterized by comprising the integrated electric energy conversion device according to any one of claims 1-6.
A device is characterized in that it comprises the integrated electric energy conversion device according to any one of claims 1-6, a motor, a power battery, a first power consumption module and a second power consumption module.