WO2019029139A1

WO2019029139A1 - Integrated electric air compressor and fuel battery air inlet system using same

Info

Publication number: WO2019029139A1
Application number: PCT/CN2018/074630
Authority: WO
Inventors: 邓佳; 朱太荣; 韦冬冬; 赵勇富
Original assignee: 中山大洋电机股份有限公司; 大洋电机新动力科技有限公司
Priority date: 2017-08-08
Filing date: 2018-01-30
Publication date: 2019-02-14
Also published as: CN107476951A; CN107476951B

Abstract

An integrated electric air compressor and a fuel battery air inlet system using same. According to the integrated electric air compressor, a compressor assembly (3), a motor (1) and a motor controller (2) are integrated with a DC-DC converter (4); the DC-DC converter (4) is provided in a casing (21) of the motor controller (2); the motor controller (2) is connected to a rear end cover (15) of the motor (1); the compressor assembly (3) is mechanically coupled to the motor (1). Said air compressor has a self-starting function, reducing the number of connectors and pipelines used, achieving high degrees of integration and modularization and having a compact structure, facilitating installation, reducing the complexity and manufacturing cost of the system, and reducing the number of parts, the influence of exposed pipelines on the system, the assembling complexity of the system and the electromagnetic interference.

Description

Integrated electric air compressor and fuel cell air intake system using same

Technical field:

The present invention relates to an integrated electric air compressor, and more particularly to a fuel cell air intake system for an electric vehicle.

Background technique:

The fuel cell system utilizes an electrochemical reaction between hydrogen stored in a gas cylinder and oxygen from the air to generate electrical energy, providing a source of power for the electrical equipment, typically including a fuel cell stack and a fuel cell air intake system. The fuel cell air intake system includes an air compressor, an air filter, a muffler and a humidifier, wherein the air compressor is used to compress the air and supply the compressed air to the battery stack; the air filter is used to purify the air and block the air. Impurities such as dust enter the intake system; the muffler eliminates the noise generated by the rapid flow of air; and the humidifier humidifies the compressed air with moisture generated in the stack.

The air compressor includes a motor, a motor controller, and a compressor assembly. The motor and the motor controller constitute a motor drive system, and the motor and the motor controller are connected by wires. When used in a vehicle, when the motor drive system is used as a power source or other accessory system, the space is often limited, and the power is large, and the heat dissipation requirement is high. The motor and motor controllers of the existing air compressors are generally arranged separately, requiring the use of several connectors and cables. The heat dissipation channels are connected through external pipes, the connectors are expensive, and the external cables and pipes are difficult to arrange. It is also susceptible to electromagnetic interference and vibration.

In addition, when the fuel cell air compressor is started, the low-voltage power supply on the external vehicle is required to provide the starting energy, and at the same time, the low-voltage power supply needs to be converted to the high-voltage DC-DC converter required by the motor controller. The connection of the DC-DC converter to the motor controller requires the use of several connectors and cables.

In summary, the current air compressors cannot be modularized, have low integration, large volume, separate parts, and are cumbersome to connect with each other, and external cables and pipelines are difficult to arrange, and are susceptible to electromagnetic interference and vibration. The installation layout is difficult.

Summary of the invention:

An object of the present invention is to provide an integrated electric air compressor and a fuel cell air intake system using the same, which solves the problem that the components of the air compressor in the prior art are separated and independently arranged, the integration degree is low, the volume is large, and the interconnection is External cables and pipelines are difficult to arrange and are prone to technical problems caused by electromagnetic interference.

The object of the present invention is achieved by the following technical solutions:

An integrated electric air compressor comprising a motor, a motor controller and a compressor assembly, wherein the motor and the motor controller comprise a motor drive system, the motor powering the compressor assembly, including with a first inlet and a first a casing, a stator assembly, a rotor assembly, a front end cover and a rear end cover of the first liquid cooling passage of the liquid outlet, the stator assembly and the rotor assembly are mounted in the casing, the rotor assembly includes a rotating shaft, and the end of the rotating shaft extends from the front end cover Forming a shaft extension end; the motor controller is configured to control operation of the motor, including a driving module, a control circuit board, a capacitor module, a second liquid cooling passage box with a second water inlet and a second water outlet, and driving The module, the control circuit board and the capacitor module are installed inside the box; the box body is coupled with the rear end cover, and the second water outlet of the box body is docked with the first liquid inlet of the motor, so that the first liquid cooling channel and the first liquid The two liquid cooling passages are coupled to form an integral cooling passage; the compressor assembly is mechanically coupled to the shaft end of the motor.

The integrated electric air compressor described above further includes a DC-DC converter disposed in a casing of the motor controller, and an external low-voltage power source is converted into a high voltage by a DC-DC converter. The motor drive system supplies power.

The casing of the motor controller described above comprises a top panel, a bottom panel and a plurality of side panels, and the top panel, the bottom panel and the plurality of side panels enclose the receiving cavity, the driving module, the control circuit board, the capacitor module and the DC-DC converter Installed inside the receiving chamber, the top panel is coupled to the rear end cover.

The side cavity is arranged inside the top panel, and the opening of the side cavity is covered by a top cover plate, the side cavity is provided with a heat dissipation and heat insulation flow channel, and the second water outlet is connected with the heat dissipation and heat insulation flow channel.

The first liquid inlet of the motor described above is disposed on the rear end cover, the top cover plate is provided with a boss interface, the boss interface is hollow to form a second water outlet, and the first interface on the boss interface and the rear end cover The inlet is connected and sealed.

The accommodating cavity described above is divided into an upper cavity and a lower cavity, and the upper cavity and the lower cavity are separated by a heat dissipation bottom plate; the heat dissipation ground plate is provided with a heat dissipation channel groove, and the opening of the upper cavity and the lower cavity The cover is covered by the upper cover and the lower cover respectively, and the heat dissipation and heat insulation flow path communicates with the heat dissipation flow path groove to form a second liquid cooling passage, and the side cavity is located at one side of the upper cavity and the lower cavity.

The two ends of the heat dissipation bottom plate are respectively connected to the top panel and the bottom panel, the second water inlet is disposed on the bottom plate, and the second water inlet is connected to the heat dissipation channel.

A surface of the heat dissipation substrate is recessed to form a heat dissipation channel groove, and the heat dissipation substrate of the driving module is mounted on the heat dissipation channel groove to cover the opening of the heat dissipation channel groove, and the heat dissipation layer on the heat dissipation substrate Extend into the heat sink channel.

The DC-DC converter assembly in the box body is placed in close contact with the surface of the side cavity and the other surface of the heat dissipation substrate.

In the above, a plurality of wire holes are arranged on one side of the side cavity, and the lead cable and the signal wire of the motor enter the receiving cavity of the box through the wire hole.

The top surface of the rear end cover and the motor controller is provided with a mounting hole and a positioning stop for convenient installation.

The DC-DC converter described above is connected with a control switch for turning the DC-DC converter function on or off.

The through hole is disposed on the heat dissipation substrate, and the through hole is located outside the groove, and the through hole is used for connecting the upper cavity and the lower cavity, and the through hole is connected through the wire or the copper bus or the terminal.

The above-mentioned bottom plate is provided with an explosion-proof valve, a signal connector, a grounding port, a high-voltage positive connector, a high-voltage negative connector, and a low-voltage power connector.

A fuel cell air intake system includes an air filter and an air compressor, wherein the air compressor adopts the integrated electric air compressor described above,

The fuel cell air intake system described above further includes a low voltage power source that is converted to a high voltage by a DC-DC converter mounted in the casing to provide the motor drive system with operating energy during the startup phase.

The DC-DC converter described above is connected with a control switch. When the fuel cell reaches a normal operating voltage, the DC-DC converter is automatically turned off by the control switch, and the fuel cell directly supplies energy to the motor drive system.

The control switch described above is a relay switch.

The air intake system described above also includes an air cooler and a humidifier.

Compared with the prior art, the invention has the following effects:

1) Integrating the compressor assembly, the motor and the motor controller into an integrated electric air compressor, the motor controller is connected to the rear end cover of the motor, and the compressor assembly is mechanically coupled with the motor shaft extension end, and the volume is compact and convenient. Installation, reducing system complexity and manufacturing costs, reducing the number of parts, reducing the impact of exposed lines on the system, reducing system assembly complexity and reducing electromagnetic interference;

2) An integrated electric air compressor, further comprising a DC-DC converter, the DC-DC converter being disposed in a casing of the motor controller, and an external low-voltage power source being converted into a high voltage by a DC-DC converter The drive system supplies power, so that the air compressor has a self-starting function, reducing the use of connectors and pipelines, and the integration is modular.

3) The second water outlet of the casing of the motor controller is docked with the first liquid inlet of the motor, so that the first liquid cooling channel and the second liquid cooling channel are connected to form an integrated cooling channel, thereby reducing the pipeline usage and exposure. The influence of the pipeline on the system reduces the difficulty of assembly and is compact.

4) The top panel is coupled with the rear end cover, and the side cavity is disposed inside the top panel, the side cavity body is provided with a heat dissipation and heat insulation flow channel, and the second water outlet is connected with the heat dissipation and heat insulation flow channel, and the heat dissipation and heat insulation flow channel is An insulation barrier is formed between the motor controller and the motor, and of course, the heat dissipation and heat insulation flow path also has a certain heat dissipation effect;

5) The top cover plate is provided with a boss interface, the boss interface is hollow to form a second water outlet, and the boss interface is connected and sealed with the first liquid inlet on the rear cover, the structure is simple, the connection is convenient, and the assembly efficiency is improved. ;

6) The inside of the casing of the motor controller is divided into an upper cavity and a lower cavity, and the upper cavity and the lower cavity are separated by a heat dissipation bottom plate; the heat dissipation ground plate is provided with a heat dissipation channel groove, and the heat dissipation The heat insulating flow channel and the heat dissipation channel are connected to form a second liquid cooling channel, and the side cavity is located at one side of the upper cavity and the lower cavity, and the heat dissipation and heat insulation flow channel and the heat dissipation channel groove increase the heat dissipation area and accelerate heat dissipation. And the spatial layout is reasonable, which can reduce the internal interference and make the installation layout of each electronic device more reasonable;

7) The two ends of the heat dissipation substrate are respectively connected to the top panel and the bottom panel, the second water inlet is disposed on the bottom plate, and the second water inlet is connected to the heat dissipation channel, and a surface of the heat dissipation substrate is dug A heat dissipating channel is formed in the groove, and the heat dissipating substrate of the driving module is mounted on the opening of the heat dissipating channel groove to cover the heat dissipating channel groove, and the heat dissipating rib on the heat dissipating substrate extends into the heat dissipating channel groove, and the heat dissipating bottom plate The through hole is disposed on the outer side of the groove, the through hole is used for connecting the upper cavity and the lower cavity, and the through hole is connected through the wire or the connecting copper bar or the terminal, the structure is simple, the layout is reasonable, and the installation is convenient;

8) The bottom plate is provided with an explosion-proof valve, a signal connector, a grounding port, a high-voltage positive connector, a high-voltage negative connector, and a low-voltage power connector, and the layout is reasonable, and the installation and wiring are convenient;

8) A fuel cell air intake system of the present invention, comprising an air filter and an air compressor, wherein the air compressor is an integrated electric air compressor as described above, which makes the structure compact, small in size, and reliable in operation.

9) The fuel air intake system further includes a low voltage power source that is converted to a high voltage by a DC-DC converter mounted inside the casing to provide the motor drive system with operating energy in a startup phase, the DC-described above. The DC converter is connected with a control switch. When the fuel cell reaches a normal working voltage, the DC-DC converter is automatically disconnected by the control switch, and the fuel cell directly supplies energy to the motor drive system, and the degree of integration is high. The air compressor has a self-starting function, and automatically switches the fuel cell power supply after starting, energy saving and environmental protection, small size, compact structure and reliable operation.

BRIEF DESCRIPTION OF THE DRAWINGS:

Figure 1 is a perspective view of a first embodiment of the present invention;

Figure 2 is a front elevational view of the first embodiment of the present invention;

Figure 3 is a cross-sectional view taken along line A-A of Figure 2;

Figure 4 is a perspective view of an angle of a motor controller according to a first embodiment of the present invention;

Figure 5 is a perspective view showing another angle of the motor controller of the first embodiment of the present invention;

Figure 6 is a front elevational view of the motor controller of the first embodiment of the present invention;

Figure 7 is a cross-sectional view taken along line B-B of Figure 6;

8 is a perspective view of the motor controller of the first embodiment of the present invention after removing the top cover, the upper cover, the lower cover, and the control circuit board;

Figure 9 is a plan view of Figure 8;

Figure 10 is a plan view of C-C of Figure 9;

Figure 11 is a perspective view of the casing of the motor controller of the first embodiment of the present invention after removing the top cover and the lower cover;

Figure 12 is a perspective view of a motor according to a first embodiment of the present invention;

Figure 13 is a front elevational view of the motor of the first embodiment of the present invention;

Figure 14 is a cross-sectional view taken along line D-D of Figure 13;

Figure 15 is a block schematic diagram of a fuel cell air intake system of the present invention;

Figure 16 is a schematic view showing the power supply of the fuel cell air intake system in the startup phase of the present invention;

Figure 17 is a schematic view showing the power supply of the fuel cell air intake system of the present invention in a normal working phase.

Detailed ways:

The present invention will now be described in further detail by way of specific embodiments and the accompanying drawings.

Embodiment 1:

As shown in FIG. 1 to FIG. 14 , the embodiment provides an integrated electric air compressor, comprising a motor 1 , a motor controller 2 and a compressor assembly 3 , wherein the motor 1 and the motor controller 2 form a motor drive system. The motor 1 provides power to the compressor assembly 3, and the motor 1 includes a casing 11, a stator assembly 12, a rotor assembly 13, and a front end of a first liquid cooling passage 113 having a first inlet port 111 and a first outlet port 112. The cover 14 and the rear end cover 15, the stator assembly 12 and the rotor assembly 13 are mounted in the casing 11, the rotor assembly 13 includes a rotating shaft 131, the end of the rotating shaft 131 protrudes from the front end cover to form a shaft extending end 1311;

The motor controller 2 is used for controlling the operation of the motor, and includes a driving module 22, a control circuit board 23, a capacitor module 24, and a casing of the second liquid cooling passage 213 with the second water inlet 211 and the second water outlet 212. 21, the driving module 22, the control circuit board 23, the capacitor module 24 is installed inside the box 21;

The casing 21 is coupled to the rear end cover 15, and the second water outlet 212 of the casing 21 is in contact with the first liquid inlet 111 of the motor 1, so that the first liquid cooling passage 113 and the second liquid cooling passage 213 are connected. Forming an integrated cooling channel;

The compressor assembly 3 is mechanically coupled to the shaft extension 1311 of the motor 1.

The integrated electric air compressor further includes a DC-DC converter 4, the DC-DC converter 4 is disposed in the casing 21 of the motor controller 2, and the external low-voltage power source passes through the DC-DC converter. 4 Converted to high voltage to supply power to the motor drive system.

The casing 21 of the motor controller 2 includes a top panel 214, a bottom panel 215 and a plurality of side panels 216. The top panel 214, the bottom panel 215 and the side panels 216 enclose a receiving cavity 210, a driving module 22, and a control circuit board 23. The capacitor module 24 and the DC-DC converter 4 are mounted inside the accommodating chamber 210, and the top panel 214 is coupled to the rear end cover 15.

A side cavity 2140 is disposed in the top panel 214, and the opening of the side cavity 2140 is covered by a top cover plate 25. The side cavity 2140 is provided with a plurality of separation ribs 2142, and the plurality of separation ribs 2142 are side cavity The body 2140 is partitioned into a heat-dissipating heat insulating channel 2141, and the second water outlet 212 is in communication with the heat-dissipating heat-insulating channel 2141.

The first liquid inlet 111 of the motor is disposed on the rear end cover 15, the top cover 25 is provided with a boss interface 251, and the boss interface 251 is hollow to form a second water outlet 212, the boss interface 251 and the rear end The first liquid inlet 111 on the cover 15 is connected and sealed.

The accommodating cavity 210 is divided into an upper cavity 210A and a lower cavity 210B. The upper cavity 210A and the lower cavity 210B are separated by a heat dissipation bottom plate 27; the heat dissipation substrate 27 is provided with a heat dissipation channel groove 271 and an upper cavity. The openings of the body 210A and the lower cavity 210B are respectively covered by the upper cover 218 and the lower cover 219, and the heat dissipation and heat insulation channel 2141 communicates with the heat dissipation channel 271 to form a second liquid cooling channel 213, the side cavity The body 2140 is located on one side of the upper cavity 210A and the lower cavity 210B. The heat dissipation heat insulating channel 2141 is in communication with the heat dissipation channel groove 271 through the first auxiliary flow channel 2143;

The two ends of the heat dissipation bottom plate 27 are respectively connected to the top panel 214 and the bottom panel 215. The second water inlet 211 is disposed on the bottom panel 215, and the second water inlet 211 is in communication with the heat dissipation channel groove 271. The heat dissipation channel groove 271 The second auxiliary flow path 270 is in communication with the second water inlet 211.

A heat dissipating channel groove 271 is formed on one surface of the heat dissipating bottom plate 27, and the heat dissipating channel 221 of the driving module 22 is mounted on the heat dissipating channel groove 271 to cover the opening of the heat dissipating channel groove 271. The heat dissipation ribs 2211 on the 221 extend into the heat dissipation channel grooves 271.

The DC-DC converter assembly 4 in the housing is placed in close contact with the surface of the side cavity 2140 and the other surface of the heat dissipation substrate 27.

A plurality of wire holes 2144 are disposed on the side of the side cavity 2140, and the lead cable 16 and the signal wire of the motor 1 enter the receiving cavity 210 of the casing 21 through the wire hole 2144.

The rear end cover 15 and the top surface of the casing 21 of the motor controller 2 are provided with mounting holes 17 and positioning stops.

The DC-DC converter 4 is connected with a control switch for turning on or off the function of the DC-DC converter 4.

The through hole 272 is disposed on the heat dissipation substrate 27, and the through hole 272 is located outside the groove 270. The through hole 272 is used for connecting the upper cavity 210A and the lower cavity 210B, and the through hole is connected through the wire or the copper bus or the terminal 26. 272.

The explosion-proof valve 201, the signal connector 202, the grounding port 203, the high-voltage positive electrode connector 204, the high-voltage negative electrode connector 205, and the low-voltage power connector 206 are disposed on the bottom panel 215.

The compressor assembly 3, the motor 1, the motor controller 2 and the DC-DC converter 4 are integrated to form an integrated electric air compressor, and the DC-DC converter 4 is disposed on the motor controller 2 In the casing 21, the motor controller 2 is connected to the rear end cover 15 of the motor 1, and the compressor assembly 3 is mechanically coupled with the shaft end 1311 of the motor 1, so that the air compressor has a self-starting function, and the connection is reduced. The use of plug-ins and pipelines is integrated, modular, and compact, easy to install, reducing system complexity and manufacturing costs, reducing the number of parts, reducing the impact of exposed pipelines on the system, reducing system assembly complexity, and reducing electromagnetic interference; The second water outlet 212 of the casing 21 is docked with the first liquid inlet 111 of the motor 1, so that the first liquid cooling passage 113 and the second liquid cooling passage 213 are connected to form an integrated cooling passage, thereby reducing the pipeline usage and exposure. The influence of the pipeline on the system reduces the difficulty of assembly and is compact.

Embodiment 2:

As shown in FIG. 15, a fuel cell air intake system of the present invention includes an air filter, a muffler, an integrated electric air compressor, an air cooler and a humidifier, and the external cold air passes through a filter, a muffler, and an integral body. The electric air compressor, air cooler and humidifier provide compressed air to the fuel cell stack. As shown in FIG. 16, the self-starting integrated air compressor adopts the integrated electric air compressor of the first embodiment, which further comprises a low voltage power supply, and the low voltage power supply passes through a DC-DC installed in the cabinet. The conversion of the converter 4 to a high voltage provides the motor drive system with operating energy during the start-up phase.

As shown in FIG. 17, the DC-DC converter is connected with a control switch 200. When the fuel cell system reaches a normal operating voltage, the DC-DC converter 4 is automatically turned off by the control switch 200, and the fuel cell system directly supplies energy to the fuel cell system. The motor drive system. The control switch 200 is a relay switch.

The fuel cell air intake system of the present invention has many disadvantages such as high cost, inconvenient installation, large volume, multiple pipelines and complicated, etc., which are generated by the separation of the motor, the motor controller and the DC-DC converter of the existing air compressor. The motor, the motor controller and the DC-DC converter are integrated to form an integrated electric air compressor, and an air intake system suitable for the fuel cell system can be obtained, especially for the field of fuel cell vehicles and the like, and the air is made. Compressor with self-starting function, reducing the use of connectors and pipelines, reducing the complexity and manufacturing cost of air compressors and intake systems, reducing the impact of exposed pipelines on the system, reducing system assembly complexity, and simplifying vehicle assembly procedures Reduce system noise, improve system efficiency and reliability, and provide guarantee for the normal operation of the fuel cell system.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and scope of the present invention are equivalent. The manner of replacement is included in the scope of protection of the present invention.

Claims

The integrated electric air compressor comprises a motor (1), a motor controller (2) and a compressor assembly (3), wherein the motor (1) and the motor controller (2) constitute a motor drive system, characterized in that:

The motor (1) powers the compressor assembly (3), including a housing (11) having a first liquid cooling passage (113) with a first inlet (111) and a first outlet (112) (11) ), the stator assembly (12), the rotor assembly (13), the front end cover (14), and the rear end cover (15), the stator assembly (12) and the rotor assembly (13) are mounted in the casing (11), and the rotor assembly ( 13) comprising a shaft (131), the end of the shaft (131) protrudes from the front end cover (14) to form a shaft extension end (1311);

The motor controller (2) is used for controlling the operation of the motor, including a driving module (22), a control circuit board (23), a capacitor module (24), a second water inlet (211) and a second water outlet ( 212) the second liquid cooling channel (213) of the box (21), the driving module (22), the control circuit board (23), the capacitor module (24) is installed inside the box (21);

The box body (21) is coupled to the rear end cover (15), and the second water outlet (212) of the box body (21) is docked with the first liquid inlet port (111) of the motor (1) to thereby make the first liquid The cooling passage (113) and the second liquid cooling passage (213) are connected to form an integrated cooling passage;

The compressor assembly (3) is mechanically coupled to a shaft end (1311) of the motor (1).
The integrated electric air compressor according to claim 1, wherein said integrated electric air compressor further comprises a DC-DC converter (4), said DC-DC converter (4) being arranged In the casing (21) of the motor controller (2), an external low-voltage power source is converted into a high voltage by a DC-DC converter (4) to supply power to the motor drive system;
The integrated electric air compressor according to claim 2, wherein the casing (21) of the motor controller (2) comprises a top panel (214), a bottom panel (215) and a plurality of side panels (216). The top panel (214), the bottom panel (215) and the plurality of side panels (216) enclose a receiving cavity (210), a driving module (22), a control circuit board (23), a capacitor module (24) and a DC-DC converter (4) Installed inside the accommodating chamber (210), the top panel (214) is coupled to the rear end cover (15).
The integrated electric air compressor according to claim 1 or 2 or 3, wherein the top panel (214) is provided with a side cavity (2140), and the opening of the side cavity (2140) is topped. The cover plate (25) is covered, the side cavity (2140) is provided with a heat dissipation and heat insulation flow channel (2141), and the second water outlet (212) is connected with the heat dissipation and heat insulation flow channel (2141).
The integrated electric air compressor according to claim 4, wherein the first liquid inlet (111) of the motor is disposed on the rear end cover (15), and the top cover (25) is provided with a boss The interface (251), the boss interface (251) hollowly forms a second water outlet (212), and the boss interface (251) is connected and sealed with the first liquid inlet (111) on the rear end cover (15).
The integrated electric air compressor according to claim 4, wherein said receiving chamber (210) is divided into an upper chamber (210A) and a lower chamber (210B), an upper chamber (210A) and a lower chamber The bodies (210B) are separated by a heat dissipation substrate (27); the heat dissipation substrate (27) is provided with a heat dissipation channel groove (271), and the openings of the upper cavity (210A) and the lower cavity (210B) are respectively used The upper cover plate (218) and the lower cover plate (219) are covered, and the heat dissipation and heat insulation flow channel (2141) communicates with the heat dissipation channel groove (271) to form a second liquid cooling channel (213), and the side cavity body ( 2140) is located on one side of the upper cavity (210A) and the lower cavity (210B).
The integrated electric air compressor according to claim 6, wherein the two ends of the heat dissipation base plate (27) are respectively connected to the top panel (214) and the bottom panel (215), and the second water inlet (211) It is disposed on the bottom panel (215), and the second water inlet (211) is in communication with the heat dissipation channel groove (271).
The integrated electric air compressor according to claim 7, wherein a groove is formed on one surface of the heat dissipation base plate (27) to form a heat dissipation channel groove (271), and the heat dissipation of the driving module (22) The substrate (221) is mounted to close the opening of the heat dissipation channel groove (271) on the heat dissipation channel groove (271), and the heat dissipation rib (2211) on the heat dissipation substrate (221) extends into the heat dissipation channel groove (271). inside.
The integrated electric air compressor according to claim 8, wherein the surface of the DC-DC converter assembly (4) and the side cavity (2410) in the casing (21) and the heat dissipation bottom plate (27) ) The other side is placed close to each other.
The integrated electric air compressor according to claim 9, wherein a plurality of wire holes (2144) are provided on one side of the side cavity (2140), and the lead wire (16) of the motor (1) and The signal line enters the receiving cavity (210) of the casing (21) through the wire hole (2144).
The integrated electric air compressor according to claim 7, characterized in that the rear end cover (15) and the top surface of the casing (21) of the motor controller (2) are provided with mounting holes (17).
The integrated electric air compressor according to claim 7, wherein said DC-DC converter (4) is connected to a control switch for turning on or off the DC-DC converter (4) Features.
The integrated electric air compressor according to claim 12, wherein a through hole (272) is provided in the heat dissipation base plate (27), and the through hole (272) is located outside the groove (270), and the through hole (272) ) for connecting the upper cavity (210A) and the lower cavity (210B), passing through the through hole (272) through wires or connecting copper bars or terminals (26).
The integrated electric air compressor according to claim 13, wherein an explosion-proof valve (201), a signal connector (202), a grounding port (203), and a high-voltage positive connector are disposed on the bottom panel (215) ( 204), high voltage negative connector (205), low voltage power connector (206).
A fuel cell air intake system comprising an air filter and an air compressor, wherein the air compressor employs the integrated electric air compressor of any one of claims 1 to 14.
A fuel cell air intake system according to claim 15, further comprising a low voltage power source, said low voltage power source being converted to a high voltage by said DC-DC converter mounted in the casing for driving said motor The system provides the working energy during the start-up phase.
A fuel cell air intake system according to claim 16, wherein the DC-DC converter is connected with a control switch for DC-DC conversion by controlling the switch (200) when the fuel cell reaches a normal operating voltage. The device is automatically disconnected and the fuel cell directly supplies energy to the motor drive system.
A fuel cell air intake system according to claim 17, wherein the control switch is a relay switch.
A fuel cell air intake system according to claim 18, wherein said air intake system further comprises an air cooler and a humidifier.