CN218594141U - Integrated electric energy conversion device, power supply device and vehicle - Google Patents

Abstract

The application provides an integrated electric energy conversion device, a power supply device and a vehicle. The integrated electric energy conversion device comprises a direct current converter, a first direct current voltage and a second direct current voltage, wherein the direct current converter is used for converting the first direct current voltage input by the hydrogen fuel cell stack into the second direct current voltage; the vehicle-mounted charger is used for converting the first alternating voltage into a third direct voltage and converting a fourth direct voltage input by the power battery into a second alternating voltage; the DC converter is also used for inputting a fifth DC voltage and/or power to the hydrogen fuel cell converting the sixth direct-current voltage input by the battery into a plurality of seventh direct-current voltages and outputting the seventh direct-current voltages respectively; a housing for accommodating the device; and the first baffle plates are arranged between two adjacent devices in the vehicle-mounted charger, the distributor, the direct-current step-down transformer, the air compressor controller and the hydrogen pump controller. The application provides an integrated electric energy conversion device through a plurality of functional device collections in the multi-functional product that integrates that has integrateed, has reduced the occupation space when whole size and loading.

Description

Integrated electric energy conversion device, power supply device and vehicle

Technical Field

The application relates to the technical field of automobiles, in particular to an integrated electric energy conversion device, a power supply device and a vehicle.

Background

With the continuous development of the technology of the electric automobile, the hydrogen fuel cell automobile is applied to a new energy automobile due to the zero pollution characteristic of the hydrogen fuel cell automobile. The high-power DC-DC converter between the hydrogen fuel pile and the power battery only has the DC-DC heavy current conversion function, the high-voltage power distribution function and the communication control function, so that in order to realize more functions, external equipment is required, the connection space is increased, the layout space of the whole vehicle is occupied, the weight of the whole vehicle is larger, the manufacturing cost is high, and the cruising ability is reduced.

SUMMERY OF THE UTILITY MODEL

In a first aspect, an embodiment of the present application provides an integrated power conversion device, including:

the direct current converter is used for converting a first direct current voltage input by the hydrogen fuel cell stack into a second direct current voltage to charge the power battery;

the vehicle-mounted charger is used for receiving the first alternating voltage and converting the first alternating voltage into a third direct voltage to charge the power battery, and is also used for receiving a fourth direct voltage input by the power battery and converting the fourth direct voltage into a second alternating voltage, and the second alternating voltage is used for supplying power to an external alternating current electric appliance;

the direct current converter is further configured to receive a fifth direct current voltage input by the hydrogen fuel cell stack and a sixth direct current voltage input by the power cell, and convert the fifth direct current voltage and/or the sixth direct current voltage into a plurality of seventh direct current voltages, where the plurality of seventh direct current voltages include a first sub direct current voltage, a second sub direct current voltage, a third sub direct current voltage, and a fourth sub direct current voltage;

the distributor is electrically connected with the direct current converter and used for receiving the first sub direct current voltage to supply power for an externally connected direct current device;

a DC step-down transformer electrically connected to the DC converter for receiving the second sub DC voltage, the second sub direct current voltage is subjected to voltage reduction and then supplies power to a low-voltage load;

the air compressor controller is electrically connected with the direct current converter and used for receiving the third sub direct current voltage, supplying power to the air compressor and controlling the air compressor to work;

the hydrogen pump controller is electrically connected with the direct current converter and is used for receiving the fourth sub direct current voltage, supplying power to the hydrogen pump and controlling the hydrogen pump to work;

a housing for housing the dc converter, the on-vehicle charger, the distributor, the dc dropper, the air compressor controller, and the hydrogen pump controller; and

the first baffles are arranged between two adjacently arranged devices in the vehicle-mounted charger, the distributor, the direct current voltage reducer, the air compressor controller and the hydrogen pump controller and used for isolating the two adjacently arranged devices.

The vehicle-mounted charger, the distributor, the direct current step-down transformer, the air compressor controller and two adjacent first baffles arranged at intervals are arranged between two adjacent devices in the hydrogen pump controller, a first gap is formed between the two adjacent first baffles arranged at intervals, and the first gap is used for accommodating an electric connecting wire.

Wherein the integrated power conversion device further comprises:

the second baffle plate is contained in the shell, the shell is divided into a first containing space and a second containing space which are arranged in a stacked mode, the first containing space is used for containing the vehicle-mounted charger, the distributor, the direct-current voltage reducer, the air compressor controller and the hydrogen pump controller, and the second containing space is used for containing the direct-current converter.

Wherein the integrated power conversion device further comprises:

the shielding plate is connected with part of the first baffles in the plurality of first baffles in a matching manner and used for sealing part of devices in the vehicle-mounted charger, the distributor, the direct-current step-down transformer, the air compressor controller and the hydrogen pump controller;

the first cover plate comprises a cover plate body and a third baffle plate, the cover plate body is connected with one side, close to the first accommodating space, of the shell in a matched mode and used for sealing the first accommodating space, the third baffle plate is arranged on the surface, facing the shielding plate, of the cover plate body in a protruding mode, and the third baffle plate is connected with the other part of the first baffle plates in the multiple first baffle plates in a matched mode so as to seal devices arranged around the other part of the first baffle plates in a surrounding mode; zxfoom

And the second cover plate is matched and connected with one side of the shell, which is close to the second accommodating space, and is used for sealing the second accommodating space.

Wherein the integrated power conversion device further comprises:

the cooling piece is embedded in the second baffle and used for cooling the direct current converter, the vehicle-mounted charger, the distributor, the direct current step-down transformer, the air compressor controller and the hydrogen pump controller.

And a second gap is formed between the cover plate body and the shielding plate and used for accommodating an electric connecting wire.

Wherein the integrated power conversion device further comprises:

and the annunciators are respectively and electrically connected with the vehicle-mounted charger, the distributor, the direct-current voltage reducer, the air compressor controller, the hydrogen pump controller and the direct-current converter and are used for transmitting signals.

Wherein the content of the first and second substances, the integrated electric energy conversion device further includes:

the plurality of function control interfaces are exposed on the shell and are respectively used for connecting the vehicle-mounted charger, the distributor, the direct current voltage reducer, the air compressor controller, the hydrogen pump controller and the direct current converter.

In a second aspect, an embodiment of the present application further provides a power supply device, including:

an integrated electrical energy conversion device as described in the first aspect;

a hydrogen fuel cell stack electrically connected to the integrated power conversion device for outputting the first dc voltage to the integrated power conversion device and converting the first dc voltage to the second dc voltage via the integrated power conversion device, the hydrogen fuel cell stack further being configured to output a fifth dc voltage to the integrated power conversion device; and

and the power battery is electrically connected with the integrated electric energy conversion device, is used for receiving the second direct-current voltage, and is also used for outputting the fourth direct-current voltage and the sixth direct-current voltage to the integrated electric energy conversion device.

In a third aspect, an embodiment of the present application further provides a vehicle, where the vehicle includes a low-voltage load, an air compressor, a hydrogen pump, and the power supply device according to the second aspect, and the power supply device is configured to supply power to the low-voltage load, the air compressor, and the hydrogen pump.

The embodiment of the application provides an integrated electric energy conversion device, integrated electric energy conversion device includes direct current converter, on-vehicle charger, distributor, direct current step-down transformer, air compressor machine controller, hydrogen pump controller and casing. Through the casing is acceptd direct current converter vehicle charger the distributor direct current step-down transformer air compressor machine controller and hydrogen pump controller forms multi-functional integrated an organic whole integrated electric energy conversion equipment has reduced pencil connection space, and then has reduced integrated electric energy conversion equipment is in occupation space in the hydrogen fuel cell car, and then has reduced whole car weight and manufacturing cost, and has improved hydrogen fuel cell's duration. In addition, through a plurality of first baffles are right on-vehicle charger, the distributor the direct current step-down transformer, air compressor controller reaches two devices that adjacent setting in the hydrogen pump controller separate, have reduced the electromagnetic interference between the adjacent device, so that on-vehicle charger the distributor direct current step-down transformer air compressor controller and interval between the hydrogen pump controller can be designed littleer, and then has reduced integrated electric energy conversion device's overall dimension, so that occupation space further reduces during integrated electric energy conversion device loading, is favorable to the multi-functional integration of the integrated electric energy conversion device that this application embodiment provided. Therefore, the integrated electric energy conversion device provided by the application is integrated with a multifunctional integrated product through a plurality of functional devices, and the occupied space of the integrated electric energy conversion device during the whole size and loading is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an integrated power conversion device according to an embodiment of the present disclosure.

Fig. 2 is a circuit connection block diagram of the integrated power conversion device provided in the embodiment of fig. 1.

Fig. 3 is a schematic structural diagram of the integrated power conversion device provided in the embodiment of fig. 1 from another view angle.

Fig. 4 is an electrical connection block diagram of the integrated power conversion device provided in the embodiment of fig. 1.

FIG. 5 shows the embodiment of FIG. 1 provided integrated electric energy converter and changing the front view of the first accommodating space in the device.

Fig. 6 is a front view of a second accommodating space in the integrated power conversion device provided in the embodiment of fig. 1.

Fig. 7 is a schematic structural diagram of an additional shielding plate of the integrated power conversion device provided in the embodiment of fig. 1.

Fig. 8 is a schematic structural diagram of the integrated power conversion device provided in the embodiment of fig. 7 with a first cover plate added.

FIG. 9 illustrates integrated power provided by the embodiment of FIG. 8 the cross-section of the conversion device along linebase:Sub>A-base:Sub>A is schematically illustrated.

Fig. 10 is a schematic structural diagram of the integrated power conversion device provided in the embodiment of fig. 8 with a second cover plate added.

Fig. 11 is a schematic structural view of a cooling member added to the integrated power conversion device provided in the embodiment of fig. 10.

Fig. 12 is a schematic cross-sectional view of the integrated power conversion device provided in the embodiment of fig. 11 along the line B-B.

Fig. 13 is a schematic structural diagram of an on-board charger in the integrated power conversion device provided in the embodiment of fig. 11.

Fig. 14 is an electrical connection block diagram of a power supply device according to an embodiment of the present application.

Fig. 15 is an electrical connection block diagram of a vehicle according to an embodiment of the present application.

Description of the drawings: an integrated electric energy conversion device 1; an in-vehicle charger 11; a slow charging interface 111; an AC-DC circuit 112; a DC-AC circuit 113; distributor 12; a power distribution interface 121; a water pump interface 122; a thermistor interface 123; a direct current step-down transformer 13; a 24V dc output interface 131; an air compressor controller 14; an air compressor control interface 141; a hydrogen pump controller 15; a hydrogen pump control interface 151; a housing 16; the first housing space 161; a second receiving space 162; direct current a converter 17; a stack input interface 171; a current transfer interface 172; a dc conversion component 173; an input inductance 1731; an input relay 1732; a diverter plate 1733; a power control component 1734; an output relay 1735; an output inductor 1736; an insulated gate bipolar transistor 1737; a second baffle 18; a first baffle plate 19; a first gap 191; a shield plate 20; a second gap 201; a first cover plate 22; a cover plate body 221; a third baffle 222; a second cover plate 23; a temperature reducing member 24; a liquid injection port 241; a pipe 242; an annunciator 25; a signal interface 251; a function control interface 26; a ground point 27; a power battery 2; a hydrogen fuel cell stack 3; a power supply device 4; a low-voltage load 5; an air compressor 6; a hydrogen pump 7; and a vehicle 8.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any inventive step are within the scope of protection of the present application.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

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

The embodiment of the application provides an integrated electric energy conversion device 1. Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic structural diagram of an integrated power conversion device according to an embodiment of the present disclosure; fig. 2 is a circuit connection block diagram of the integrated power conversion device provided in the embodiment of fig. 1; fig. 3 is a schematic structural diagram of the electrical energy conversion device provided in the embodiment of fig. 1 from another view angle. In the present embodiment, the integrated electric power conversion apparatus 1 includes a dc converter 17, an on-vehicle charger 11, a distributor 12, a dc step-down transformer 13, an air compressor controller 14, a hydrogen pump controller 15, a housing 16, and a plurality of first baffle plates 19. The dc converter 17 is used to convert the first dc voltage input by the hydrogen fuel cell stack into a second dc voltage to charge the power battery. The vehicle-mounted charger 11 is configured to receive the first alternating-current voltage and convert the first alternating-current voltage into a third direct-current voltage to charge the power battery. The vehicle-mounted charger 11 is further configured to receive a fourth direct-current voltage input by the power battery, and convert the fourth direct-current voltage into a second alternating-current voltage. The second alternating voltage is used for supplying power for an external alternating current electrical appliance. The dc converter 17 is further configured to receive a fifth dc voltage input by the hydrogen fuel cell stack and a sixth dc voltage input by the power cell, and convert the fifth dc voltage and/or the sixth dc voltage into a plurality of seventh dc voltages. The plurality of seventh direct current voltages include a first sub direct current voltage, a second sub direct current voltage, a third sub direct current voltage and a fourth sub direct current voltage. The distributor 12 is electrically connected to the dc converter 17, and is configured to receive the first sub dc voltage to supply power to an external dc device. The dc voltage reducer 13 is electrically connected to the dc converter 17, and is configured to receive the second sub dc voltage, and reduce the second sub dc voltage to supply power to a low-voltage load. The air compressor controller 14 is electrically connected to the dc converter 17, and is configured to receive the third sub dc voltage, supply power to the air compressor, and control the operation of the air compressor. The hydrogen pump controller 15 is electrically connected to the dc converter 17, and is configured to receive the fourth sub dc voltage, supply power to the hydrogen pump, and control the operation of the hydrogen pump. The case 16 is configured to accommodate the dc converter 17, the on-vehicle charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15. The first baffles 19 are disposed between two adjacent devices in the vehicle-mounted charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15, and are configured to isolate the two adjacent devices.

In the present embodiment, the integrated power conversion apparatus 1 is applied to a hydrogen fuel cell vehicle, and is specifically used for distributing power of a power battery to a functional device in the hydrogen fuel cell vehicle to supply power to the functional device.

The direct current converter 17 has multiple functions, and in a first aspect, the direct current converter 17 is configured to convert a first direct current voltage input by the hydrogen fuel cell stack into a second direct current voltage to charge the power battery, so that the power battery is rapidly charged. In the second aspect, the dc converter 17 is further configured to receive a fifth dc voltage input by the hydrogen fuel cell stack and a sixth dc voltage input by the power battery and convert the fifth dc voltage and the sixth dc voltage into a plurality of seventh dc voltages to supply power to the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15.

Specifically, the dc converter 17 is also electrically connected to the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15, respectively. The dc converter 17 is further configured to convert the fifth dc voltage and/or the sixth dc voltage into a plurality of seventh dc voltages, where the plurality of seventh dc voltages include a first sub dc voltage, a second sub dc voltage, a third sub dc voltage, and a fourth sub dc voltage. The distributor is configured to receive the first sub dc voltage to supply power to an external dc device, for example, but not limited to, a vehicle lamp, an instrument panel, an air conditioner, and the like. The dc step-down transformer 13 receives and steps down the second sub dc voltage to supply power to low-voltage loads, such as a vehicle air-cooling fan and a ventilation circulation fan. The dc voltage reducer 13 is a dc 24V voltage reducing module, and is configured to reduce the voltage value of the second sub dc voltage to 12V to 24V. The air compressor controller 14 controls the air compressor to operate by using the third sub dc voltage. Wherein, the air compressor is the air compressor who locates in the hydrogen fuel cell car. The hydrogen pump controller 15 controls the hydrogen pump to operate using the fourth direct current voltage. The hydrogen pump is arranged on the hydrogen fuel cell automobile and used for controlling the circulation of hydrogen in the hydrogen fuel electric pile system.

It should be noted that the number of the direct current step-down transformers 13 is one or more, and when the number of the direct current step-down transformers 13 is more, the direct current step-down transformers 13 are connected in series. The number of the dc voltage reducers 13 is illustrated as 3 in fig. 1, and it is understood that the number of the dc voltage reducers 13 is not limited in fig. 1.

In the present embodiment, the in-vehicle charger 11 has an inverter function, and therefore, the in-vehicle charger 11 is also referred to as a bidirectional OBC. On one hand, the vehicle-mounted charger 11 receives a first alternating-current voltage input from the outside and converts the first alternating-current voltage into a third direct-current voltage to charge the power battery, so that the power battery is slowly charged. On the other hand, the vehicle-mounted charger 11 can receive the fourth dc voltage input by the power battery, and convert the fourth dc voltage into the second ac voltage to supply power to an external ac electrical appliance.

In this embodiment, the housing 16 is configured to accommodate the dc converter 17, the vehicle-mounted charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15, so as to integrate a plurality of electric energy conversion and control devices into a whole, thereby forming the integrated electric energy conversion device 1 having a plurality of functions, thereby increasing the functions of the integrated electric energy conversion device 1, and it is not necessary to separately configure the vehicle-mounted charger 11, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15 in the hydrogen fuel cell vehicle, thereby reducing the wiring harness connection space, further reducing the occupied space of the integrated electric energy conversion device 1 in the hydrogen fuel cell vehicle, further reducing the weight and manufacturing cost of the vehicle, and improving the cruising ability of the hydrogen fuel cell vehicle.

The dc converter 17, the vehicle charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15 may be electrically connected to each other by, but not limited to, a wire harness or a copper bar.

In addition, a plurality of first baffles 19 are arranged between two adjacently arranged devices in the vehicle-mounted charger 11, the distributor 12, the direct current voltage reducer 13, the air compressor controller 14 and the hydrogen pump controller 15 so as to separate the two adjacently arranged devices, thereby reducing the electromagnetic interference between the two adjacently arranged devices, and further reducing the overall size of the integrated electric energy conversion device 1, so that the integrated electric energy conversion device 1 occupies a small space when being loaded, and further improves the layout space of the whole vehicle.

In summary, the present embodiment provides an integrated electric energy conversion device 1, where the integrated electric energy conversion device 1 includes a dc converter 17, an on-board charger 11, a distributor 12, a dc voltage reducer 13, an air compressor controller 14, a hydrogen pump controller 15, and a housing 16. Through casing 16 accepts direct current converter 17 vehicle charger 11 distributor 12 direct current step-down transformer 13 air compressor machine controller 14 and hydrogen pump controller 15 form multi-functional integrated an organic whole integrated electric energy conversion device 1 has reduced pencil connection space, and then has reduced integrated electric energy conversion device 1 is in occupation space in the hydrogen fuel cell car, and then has reduced whole car weight and manufacturing cost, and has improved hydrogen fuel cell's duration. In addition, two adjacent devices in the vehicle-mounted charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14 and the hydrogen pump controller 15 are separated by the first baffles 19, so that electromagnetic interference between the adjacent devices is reduced, and the distance between the vehicle-mounted charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14 and the hydrogen pump controller 15 can be designed to be smaller, thereby reducing the overall size of the integrated electric energy conversion device 1, further reducing the occupied space of the integrated electric energy conversion device 1 during loading, and facilitating multifunctional integration of the integrated electric energy conversion device 1 provided by the embodiment of the present application. Therefore, the integrated power conversion device 1 provided by the present application integrates multiple functions and integrates into a whole to form a multifunctional integrated product, and reduces the overall size of the integrated power conversion device 1 and the occupied space during loading.

Referring to fig. 1 again, in the present embodiment, two first baffles 19 are disposed between two adjacent devices of the on-board charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15, and a first gap 191 is disposed between the two adjacent first baffles 19, and the first gap 191 is used for accommodating an electrical connection line.

In the present embodiment, the plurality of first baffles 19 are used to isolate the on-vehicle charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15, in order to reduce or even eliminate electromagnetic interference generated during operation of the on-board charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15.

Specifically, the first baffle 19 is made of an electromagnetic shielding material, for example, but not limited to, an aluminum alloy or stainless steel. The thickness of the first baffle plate 19 is 1 mm-3 mm, so that the distance between two adjacently arranged devices in the vehicle-mounted charger 11, the distributor 12, the direct current step-down transformer 13, the air compressor controller 14 and the hydrogen pump controller 15 can be reduced to 15 mm-25 mm, the integrated electric energy conversion device 1 is multifunctional integrated, the overall size of the integrated electric energy conversion device 1 is reduced, and the electromagnetic interference between the devices can be reduced or even eliminated.

Two first baffles 19 which are arranged at intervals are arranged between two adjacent devices in the vehicle-mounted charger 11, the distributor 12, the direct current step-down transformer 13, the air compressor controller 14 and the hydrogen pump controller 15, a first gap 191 is arranged between the two adjacent first baffles 19, and the first gap 191 is used for accommodating an electric connecting wire, so that the space utilization rate of the integrated electric energy conversion device 1 is improved, electromagnetic interference generated by connecting wires among the devices is reduced or even eliminated, and internal wiring of the integrated electric energy conversion device 1 is optimized. Wherein the first gap 191 is 12 to 24mm.

Referring to fig. 1, fig. 3 and fig. 4, fig. 4 is an electrical connection block diagram of the integrated power conversion device provided in the embodiment of fig. 1. In the present embodiment, the dc converter 17 includes a stack input interface 171, a current transmission interface 172, and a dc conversion module 173, which are electrically connected in sequence. The stack input interface 171 is used for connecting the hydrogen fuel stack to receive the first dc voltage input by the hydrogen fuel stack. The dc conversion assembly 173 is configured to convert the first dc voltage into the second dc voltage. The current transmission interface 172 is configured to connect the power battery, and transmit the second dc voltage to the power battery to charge the power battery. The on-vehicle charger 11 transmits the third direct current voltage to the power battery through the current transmission interface 172, charges the power battery, and receives the fourth direct current voltage transmitted by the power battery through the current transmission interface 172 and converts the fourth direct current voltage into a second alternating current voltage to supply power for an external alternating current electrical appliance.

The DC conversion component 173 has a DC-DC large current conversion function, for example, the first DC voltage has a current value of 750A and a voltage value of 750V, the second DC voltage has a current value of 500A and a voltage value of 750V, and the DC conversion component 173 can convert the first DC voltage into the second DC voltage. It is to be understood that the current value of the first dc voltage is related to the voltage value and the output power of the hydrogen fuel cell stack, and the current value of the second dc voltage is related to the voltage value and the operating power of the power cell. For example, the current value of the first dc voltage may be, but is not limited to, 350A, 500A, 900A, etc., and the voltage value may be, but is not limited to, 350V, 500V, 900V, etc. The current value of the second dc voltage may be, but is not limited to, 300A, 370A, 450A, etc., and the voltage value may be, but is not limited to, 350V, 500V, 900V, etc.

Specifically, the dc conversion assembly 173 includes an input inductor 1731, an input relay 1732, a shunt plate 1733, a power control assembly 1734, an output relay 1735 and an output inductor 1736. The input inductor 1731 is electrically connected to the stack input interface 171 for filtering. The input relay 1732 is electrically connected to the input inductor 1731, and is used for controlling the on/off of the ground stack input interface 171. The shunt plate 1733 is electrically connected to the input relay 1732 for converting current and voltage. The power control assembly 1734 is electrically connected to the shunt plate 1733 for controlling power output. The output relay 1735 is electrically connected to the power control component 1734 for controlling the opening and closing of the current transmission interface 172. The output inductor 1736 is electrically connected to the output relay 1735 and the current transmission interface 172 respectively for filtering.

In addition, the dc conversion module 173 further includes an Insulated Gate Bipolar Transistor 1737 (IGBT), and the Insulated Gate Bipolar Transistor 1737 is electrically connected to the inductor and the shunt plate 1733 for discharging.

The electrical connections among the devices in the dc converter 17 may be, but not limited to, electrically connected by wire harnesses or copper bars.

Referring to fig. 1, fig. 5 and fig. 6, fig. 5 is a front view of a first accommodating space in the integrated electric energy conversion device provided in the embodiment of fig. 1; fig. 6 is a front view of a second accommodating space in the integrated power conversion device provided in the embodiment of fig. 1. In the present embodiment, the integrated electric energy conversion device 1 further includes a second baffle 18. The second baffle 18 is accommodated in the housing 16, and divides the housing 16 into a first accommodating space 161 and a second accommodating space 162 which are stacked, the first accommodating space 161 being configured to accommodate the vehicle-mounted charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15, and the second accommodating space 162 being configured to accommodate the dc converter 17.

In the present embodiment, the housing 16 is divided into the first receiving space 161 and the second receiving space 162, which are stacked, by the second baffle 18, so as to separate the dc converter 17 from the in-vehicle charger 11, the distributor 12, the dc dropper 13, the air compressor controller 14, and the hydrogen pump controller 15, thereby preventing the dc converter 17 from generating electromagnetic interference with the in-vehicle charger 11, the distributor 12, the dc dropper 13, the air compressor controller 14, and the hydrogen pump controller 15.

Furthermore, the integrated power conversion device 1 also has a plurality of function control interfaces 26 exposed to the housing 16. The plurality of function control interfaces 26 include a slow charging interface 111, a 24V dc output interface 131, an air compressor control interface 141, a hydrogen pump control interface 151, a current transmission interface 172, a power distribution interface 121, a water pump interface 122, a thermistor interface 123, and the like. Specifically, the in-vehicle charger 11 has a slow charging interface 111 for connecting an ac power supply. The dc voltage reducer 13 has a 24V dc output interface 131 for electrically connecting a low voltage load. The air compressor controller 14 has an air compressor control interface 141 for electrically connecting the air compressor. The hydrogen pump controller 15 has a hydrogen pump control interface 151 for electrically connecting a hydrogen pump. The dc converter 17 has a current transmission interface 172, and the current transmission interface 172 is used for electrically connecting a power battery. The power distributor 12 has a power distribution interface 121, a water pump interface 122 and a thermistor interface 123, and the power distribution interface 121 is used for electrically connecting various functional devices on the vehicle, such as a lamp, an instrument panel, an air conditioner and the like. The water pump interface 122 is used to electrically connect the water pump. The thermistor interface 123 is used to electrically connect a thermistor (PTC).

Referring to fig. 1, 7, 8, 9 and 10, fig. 7 is a schematic structural view of an additional shielding plate of the integrated power conversion device provided in the embodiment of fig. 1; fig. 8 is a schematic structural diagram of the integrated power conversion device provided in the embodiment of fig. 7 with a first cover plate added; fig. 9 isbase:Sub>A schematic cross-sectional view of the integrated power conversion device provided in the embodiment of fig. 8 along the linebase:Sub>A-base:Sub>A; fig. 10 is a schematic structural diagram of the integrated power conversion device provided in the embodiment of fig. 8 with a second cover plate added. In the present embodiment, the integrated power conversion device 1 further includes a shielding plate 20, a first cover plate 22, and a second cover plate 23. The shielding plate 20 is connected to some of the first baffles 19 in the plurality of first baffles 19 in a fitting manner, and is used for sealing some of the devices in the vehicle-mounted charger 11, the power distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15. The first cover plate 22 includes a cover plate body 221 and a third baffle 222. The cover body 221 is connected to a side of the housing 16 close to the first receiving space 161 in a matching manner, and is used for sealing the first receiving space 161. The third baffle 222 is protruded from the surface of the cover plate body 221 facing the shielding plate 20, and the third baffle 222 is connected to another part of the first baffles 19 in the plurality of first baffles 19 in a matching manner to seal the devices surrounded by the another part of the first baffles 19. The second cover plate 23 is connected to one side of the housing 16 close to the second receiving space 162 in a matching manner, and is used for sealing the second receiving space 162.

The third baffle 222 is connected to the first baffle 19 surrounding the largest component (the dimension in the direction in which the second baffle 18 points to the first cover 22) in the vehicle-mounted charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15, so as to reduce the size of the first baffles 19, thereby reducing the cost and the space occupied by the first baffles 19.

In the present embodiment, the plurality of first baffles 19 and the second baffles 18 cooperate to form a plurality of accommodating spaces, each accommodating space has an opening, and the shielding plate 20 seals some of the openings to seal the on-board charger 11, the dc voltage reducer 13, and the hydrogen pump controller 15, so as to form a plurality of independent sealed chambers for electromagnetic shielding. In addition, the third baffle 222 is connected with the first baffle 19 for isolating the air compressor controller 14 in a matching manner, so as to seal the air compressor controller 14, and form mutually independent sealed chambers for electromagnetic shielding. And the cover plate body 221 is also connected with one side of the housing 16 close to the first accommodating space 161 in a matching manner, so as to perform electromagnetic shielding. In addition, the second cover plate 23 is coupled to one side of the housing 16 close to the second receiving space 162, and seals the second receiving space 162, so as to electromagnetically shield the dc converter 17.

In the present embodiment, in the direction in which the second baffle 18 points to the first cover plate, the size of the air compressor controller 14 is larger than that of the in-vehicle charger 11, the distributor 12, the dc voltage reducer 13, and the hydrogen pump controller 15, so that the third baffle 222 protruding from the cover plate body 221 is connected to the first baffle 19 annularly provided to the air compressor controller 14 in a fitting manner to close the air compressor controller 14, and the size of the first baffle 19 annularly provided to other devices can be reduced, thereby reducing the cost and the occupied space. In the present embodiment, since the in-vehicle charger 11, the dc voltage reducer 13, and the hydrogen pump controller 15 are sealed by the first shutter 19 and the shield plate 20, and the air compressor controller 14 is sealed by the third shutter 222, the first shutter 19, and the cover main body 221, the distributor 12 is directly sealed by the cover main body 221, and thus the cost can be reduced.

In other embodiments, of the on-vehicle charger 11, the distributor 12, the dc dropper 13, the air compressor controller 14, and the hydrogen pump controller 15, the device having the largest size in the direction in which the second shutter 18 is directed toward the first cover may be, but is not limited to, the on-vehicle charger 11, the distributor 12, the dc dropper 13, or the hydrogen pump controller 15. The device directly sealed by the cover body 221 may be, but is not limited to, the on-board charger 11, the dc voltage reducer 13, the air compressor controller 14, or the hydrogen pump controller 15. As long as the cost and the occupied space of the plurality of first baffle plates 19 can be reduced.

The housing 16, the second baffle 18, the first baffle 19, the third baffle 222, the cover plate body 221, and the second cover plate 23 are all made of electromagnetic shielding materials, for example, but not limited to, electromagnetic shielding materials such as aluminum alloy or stainless steel, so that the integrated power conversion device 1 has an electromagnetic shielding effect as a whole. Further, the integrated power conversion apparatus 1 satisfies IP67 sealing requirements. In addition, the housing 16, the second baffle 18, the first baffle 19, the third baffle 222, the cover body 221, and the second cover 23 may be, but not limited to, a die-cast aluminum alloy of type ADC12 or other materials with good heat conductivity, so as to improve the heat dissipation performance of the integrated electrical energy conversion device 1. In addition, the housing 16 has a lifting hole and a leg for mounting the integrated electric energy conversion device 1 to the vehicle 8.

Referring to fig. 1, 11 and 12, fig. 11 is a schematic structural view of a cooling member of the integrated power conversion device according to the embodiment of fig. 10; fig. 12 is a schematic cross-sectional view of the integrated power conversion device provided in the embodiment of fig. 11 along the line B-B. In the present embodiment, the integrated power conversion device 1 further includes a cooling member 24. The cooling member 24 is embedded in the second baffle 18, and is configured to cool the dc converter 17, the vehicle-mounted charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15.

In the present embodiment, the cooling material 24 includes two liquid pouring ports 241 and a duct 242. The two liquid injection ports 241 are communicated with the pipeline 242, wherein one liquid injection port 241 is used for injecting cooling liquid, and the other liquid injection port 241 is used for discharging the cooling liquid to realize circulation of the cooling liquid. The two liquid injection ports 241 are exposed to the peripheral side of the casing 16, and the pipe 242 is embedded in the second baffle 18. The cooling member 24 cools the integrated power conversion device 1 by injecting a cooling liquid into the pipe 242. The cooling liquid may be, but not limited to, water or liquid nitrogen, as long as the cooling effect is achieved.

In the present embodiment, the cooling member 24 is embedded in the second baffle 18, that is, the cooling member 24 is disposed between the dc converter 17 and the vehicle-mounted charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15, so that a good cooling effect is obtained. In addition, the direct current converter 17, the vehicle-mounted charger 11, the distributor 12, the direct current step-down transformer 13, the air compressor controller 14, and the hydrogen pump controller 15 can be cooled by embedding the cooling member 24 in the second baffle 18 in a small space, and thus, the space utilization rate is high.

In addition, the 24V dc output interface 131, the air compressor control interface 141, the hydrogen pump control interface 151, the current transmission interface 172, the power distribution interface 121, the water pump interface 122, and the thermistor interface 123 are exposed on the peripheral side of the housing 16. The plurality of function control interfaces 26 also includes a stack input interface 171. Specifically, the dc converter 17 further has a stack input interface 171, and the stack input interface 171 is exposed to the second cover plate 23 for electrically connecting the hydrogen fuel stack.

Referring to fig. 9 again, in the present embodiment, a second gap 201 is formed between the cover plate body 221 and the shielding plate 20, and the second gap 201 is used for accommodating an electrical connection wire.

In this embodiment, the third baffle 222 is connected to the first baffle 19 of the device with the largest size in the direction in which the second baffle 18 points to the first cover plate in the third baffle 222 and the on-board charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15, so as to reduce the size of the first baffles 19, so that a second gap 201 is formed between the shielding plate 20 and the cover plate body 221, and the second gap 201 is used for accommodating an electrical connection line, so as to optimize the routing of the integrated electrical energy conversion device 1, reduce or even eliminate the electromagnetic interference of the electrical connection line accommodated in the second gap 201, and improve the space utilization rate and the electromagnetic shielding effect of the integrated electrical energy conversion device 1.

Referring to fig. 13, fig. 13 is a schematic structural diagram of an on-board charger in the integrated power conversion device provided in the embodiment of fig. 11. In the present embodiment, the in-vehicle charger 11 includes an AC-DC circuit 112 and a DC-AC circuit 113. The AC-DC circuit 112 is configured to convert the first alternating voltage into the third direct voltage. The DC-AC circuit 113 is configured to receive a fourth DC voltage input by the power battery and convert the fourth DC voltage into the second AC voltage.

In the present embodiment, the vehicle-mounted charger 11 implements a slow charging function for the power battery through the AC-DC circuit 112, and implements a function of transmitting electric energy of the power battery to other devices through the DC-AC circuit 113.

Referring to fig. 5 and 11 again, in the present embodiment, the integrated electric energy conversion device 1 further includes a signal device 25, and the signal device 25 is electrically connected to the vehicle-mounted charger 11, the power distributor 12, the dc voltage reducer 13, the air compressor controller 14, the hydrogen pump controller 15, and the dc converter 17 respectively for transmitting signals.

In the present embodiment, the annunciator 25 is configured to receive operation signals of the on-vehicle charger 11, the distributor 12, the dc voltage reducer 13, the air compressor controller 14, the hydrogen pump controller 15, and the dc converter 17, and transmit the operation signals to a central controller in the vehicle. In addition, the annunciator 25 is further configured to receive a command from a central controller in the vehicle, and transmit the command to the on-board charger 11, the power distributor 12, the dc voltage reducer 13, the air compressor controller 14, the hydrogen pump controller 15, and the dc converter 17, so that the on-board charger 11, the power distributor 12, the dc voltage reducer 13, the air compressor controller 14, the hydrogen pump controller 15, and the dc converter 17 operate according to the command. Wherein the annunciator 25 has a signal interface 251 exposed to the housing 16 for electrically connecting a central controller in the vehicle. In addition, the integrated power conversion device 1 further includes a grounding point 27, and the grounding point 27 is disposed on a side surface of the housing 16 and is used for grounding.

Referring to fig. 14, fig. 14 is an electrical connection block diagram of a power supply device according to an embodiment of the present disclosure. In the present embodiment, the power supply device 4 includes a hydrogen fuel cell stack 3, a power cell 2, and the integrated electric energy conversion device 1 according to any one of the above embodiments. The hydrogen fuel cell stack 3 is electrically connected to the integrated power conversion device 1, and is configured to output the first direct current voltage to the integrated power conversion device 1, and convert the first direct current voltage into the second direct current voltage through the integrated power conversion device 1. The hydrogen fuel cell stack 3 is also configured to output a fifth dc voltage to the integrated power conversion device 1. The power battery 2 is electrically connected to the integrated electric energy conversion device 1, and is configured to receive the second direct-current voltage and output the fourth direct-current voltage and the sixth direct-current voltage to the integrated electric energy conversion device 1.

In the present embodiment, the power supply device 4 may supply power to a low-voltage load, an air compressor, a hydrogen pump, and the like, but is not limited thereto. In addition, the power supply device 4 can also supply power to the power battery 2 by using the hydrogen fuel cell stack 3.

Referring to fig. 14 and 15, fig. 15 is an electrical connection block diagram of a vehicle according to an embodiment of the present disclosure. In the present embodiment, the vehicle 8 includes the low-voltage load 5, the air compressor 6, the hydrogen pump 7, and the power supply device 4 described in the above embodiment. The power supply device 4 is used for supplying power to the low-voltage load 5, the air compressor 6 and the hydrogen pump 7.

In the present embodiment, the vehicle 8 is a hydrogen fuel cell vehicle. The integrated electric energy conversion device 1 in the power supply device 4 reduces a wiring harness connection space by integrating a plurality of functional devices into an integrated product without separately arranging the on-board charger 11, the dc voltage reducer 13, the air compressor controller 14, and the hydrogen pump controller 15 in the vehicle 8, thereby reducing an occupied space of the integrated electric energy conversion device 1 in the vehicle 8, reducing the overall weight and manufacturing cost of the vehicle 8, and improving the cruising ability of the vehicle 8. It is understood that the power supply device 4 may also supply power to other devices in the vehicle 8, such as a PTC, a water pump, etc., and fig. 15 does not limit the devices in the vehicle 8 provided in this embodiment.

Although embodiments of the present application have been shown and described, it is understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present application, and that such changes and modifications are also to be considered as within the scope of the present application.

Claims (10)

1. An integrated power conversion device, comprising:

the direct current converter is used for converting a first direct current voltage input by the hydrogen fuel cell stack into a second direct current voltage to charge the power battery;

the vehicle-mounted charger is used for receiving the first alternating-current voltage and converting the first alternating-current voltage into a third direct-current voltage so as to charge the power battery, and is also used for receiving a fourth direct-current voltage input by the power battery and converting the fourth direct-current voltage into a second alternating-current voltage, and the second alternating-current voltage is used for supplying power to an external alternating-current electric appliance;

the direct current converter is further configured to receive a fifth direct current voltage input by the hydrogen fuel cell stack and a sixth direct current voltage input by the power battery, and convert the fifth direct current voltage and/or the sixth direct current voltage into a plurality of seventh direct current voltages, where the plurality of seventh direct current voltages include a first sub direct current voltage, a second sub direct current voltage, a third sub direct current voltage, and a fourth sub direct current voltage;

the distributor is electrically connected with the direct current converter and used for receiving the first sub direct current voltage to supply power to an external direct current device;

the direct current voltage reducer is electrically connected with the direct current converter and used for receiving the second sub direct current voltage and reducing the second sub direct current voltage to supply power to a low-voltage load;

the air compressor controller is electrically connected with the direct current converter and used for receiving the third sub direct current voltage, supplying power to the air compressor and controlling the air compressor to work;

the hydrogen pump controller is electrically connected with the direct current converter and is used for receiving the fourth sub direct current voltage, supplying power to the hydrogen pump and controlling the hydrogen pump to work;

a housing for housing the dc converter, the on-vehicle charger, the distributor, the dc dropper, the air compressor controller, and the hydrogen pump controller; and

the first baffles are arranged between two adjacently arranged devices in the vehicle-mounted charger, the distributor, the direct current voltage reducer, the air compressor controller and the hydrogen pump controller and used for isolating the two adjacently arranged devices.

2. The integrated power conversion device according to claim 1, wherein two first baffles are disposed between two adjacent devices of the on-board charger, the distributor, the dc voltage reducer, the air compressor controller, and the hydrogen pump controller, and a first gap is disposed between the two adjacent first baffles, and the first gap is used for accommodating an electrical connection line.

3. The integrated power conversion device of claim 1, further comprising:

the second baffle plate is contained in the shell, the shell is divided into a first containing space and a second containing space which are arranged in a stacked mode, the first containing space is used for containing the vehicle-mounted charger, the distributor, the direct-current voltage reducer, the air compressor controller and the hydrogen pump controller, and the second containing space is used for containing the direct-current converter.

4. The integrated power conversion device of claim 3, further comprising:

the shielding plate is connected with part of the first baffles in the plurality of first baffles in a matching manner and used for sealing part of devices in the vehicle-mounted charger, the distributor, the direct-current step-down transformer, the air compressor controller and the hydrogen pump controller;

the first cover plate comprises a cover plate body and a third baffle plate, the cover plate body is connected with one side, close to the first accommodating space, of the shell in a matched mode and used for sealing the first accommodating space, the third baffle plate is arranged on the surface, facing the shielding plate, of the cover plate body in a protruding mode, and the third baffle plate is connected with the other part of the first baffle plates in the multiple first baffle plates in a matched mode so as to seal devices arranged around the other part of the first baffle plates in a surrounding mode; and

and the second cover plate is matched and connected with one side of the shell, which is close to the second accommodating space, and is used for sealing the second accommodating space.

5. An integrated power conversion device according to claim 3 or 4, further comprising:

and the cooling piece is embedded in the second baffle and used for cooling the direct current converter, the vehicle-mounted charger, the distributor, the direct current voltage reducer, the air compressor controller and the hydrogen pump controller.

6. The integrated electrical energy conversion device of claim 4, wherein a second gap is provided between the cover body and the shield for receiving an electrical connection wire.

7. The integrated power conversion device of claim 5, further comprising:

and the annunciators are respectively and electrically connected with the vehicle-mounted charger, the distributor, the direct current voltage reducer, the air compressor controller, the hydrogen pump controller and the direct current converter and are used for transmitting signals.

8. The integrated power conversion device of claim 7, further comprising:

the plurality of function control interfaces are exposed on the shell and are respectively used for connecting the vehicle-mounted charger, the distributor, the direct current voltage reducer, the air compressor controller, the hydrogen pump controller and the direct current converter.

9. A power supply device, characterized in that the power supply device comprises:

an integrated electrical energy conversion device according to any one of claims 1 to 8;

the hydrogen fuel cell stack is electrically connected with the integrated electric energy conversion device, is used for outputting the first direct-current voltage to the integrated electric energy conversion device and converting the first direct-current voltage into the second direct-current voltage through the integrated electric energy conversion device, and is also used for outputting a fifth direct-current voltage to the integrated electric energy conversion device; and

and the power battery is electrically connected with the integrated electric energy conversion device, is used for receiving the second direct-current voltage, and is also used for outputting the fourth direct-current voltage and the sixth direct-current voltage to the integrated electric energy conversion device.

10. A vehicle comprising a low-voltage load, an air compressor, a hydrogen pump, and the power supply device of claim 9, the power supply device being configured to supply power to the low-voltage load, the air compressor, and the hydrogen pump.

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