CN116761408A

CN116761408A - Ventilation device and method for Electronic Control Unit (ECU) of vehicle and vehicle

Info

Publication number: CN116761408A
Application number: CN202310964632.9A
Authority: CN
Inventors: P·N·霍布金斯; T·M·施兰根; B·M·达米科
Original assignee: BWI Shanghai Co Ltd
Current assignee: BWI Shanghai Co Ltd
Priority date: 2023-08-02
Filing date: 2023-08-02
Publication date: 2023-09-15

Abstract

The embodiment of the application provides a ventilation device and a ventilation method of an Electronic Control Unit (ECU) of a vehicle and the vehicle, wherein the ventilation device penetrates through an inner space of the ECU and a foot pit part of an inner cabin of the vehicle, and the ventilation device comprises: a first passage for penetrating a main body of a brake Hydraulic Control Unit (HCU) of a vehicle and a main body of the ECU; a second passage communicating with the first passage, for penetrating the main body of the HCU and a dust cover of an electric brake booster of the vehicle, communicating with an inner space of the dust cover; and a third passage communicating with the second passage for penetrating an interior space of the dust cover and a foot well portion of an interior cabin of the vehicle. According to the embodiment of the application, the passage is arranged to penetrate through the inner space of the ECU and the foot pit part of the inner cabin of the vehicle, so that the humidity and the temperature of the ECU and the adaptation of a person are in the same environment, the internal pressure and the external pressure of the ECU are kept balanced, and ventilation and heat dissipation are facilitated.

Description

Ventilation device and method for Electronic Control Unit (ECU) of vehicle and vehicle

Technical Field

The embodiment of the application relates to the technical field of automobile parts, in particular to a ventilation device and method of an Electronic Control Unit (ECU) of a vehicle and the vehicle.

Background

In the existing electronic control unit (Electronic Control Unit, ECU) of an automobile, ventilation and pressure discharge are required in the interior of the ECU, so that temperature fluctuations caused by internal pressure or vacuum, which may affect certain components in the ECU, can be prevented. In the prior art, ventilation permeable membranes or similar devices are typically used to ventilate the ECU.

It should be noted that the foregoing description of the background art is only for the purpose of providing a clear and complete description of the technical solution of the present application and is presented for the convenience of understanding by those skilled in the art. The above-described solutions are not considered to be known to the person skilled in the art simply because they are set forth in the background of the application section.

Disclosure of Invention

The inventors found that the currently used ventilation permeable membrane increases the cost, installation time and production line end test time, and when the ventilation hole of the ventilation permeable membrane is not covered with water or is blocked by dirt, it cannot have the effect of ventilation and exhaust, so that components therein may be damaged due to the failure of the ECU to ventilate and dissipate heat.

To solve the above-described problems or other similar problems, embodiments of the present application provide a ventilation apparatus and method of an electronic control unit ECU of a vehicle, and a vehicle.

According to an aspect of an embodiment of the present application, there is provided a ventilation device of an electronic control unit ECU of a vehicle, the ventilation device penetrating an inner space of the ECU and a foot well of an inner cabin of the vehicle, wherein the ventilation device includes: a first passage for penetrating a main body of a brake hydraulic control unit HCU of a vehicle and a main body of the ECU; a second passage communicating with the first passage, for penetrating a main body of the HCU and a dust cover of an electric brake booster of a vehicle, communicating with an inner space of the dust cover; and the third channel is communicated with the second channel and is used for penetrating through the inner space of the dust cover and the foot pit part of the inner cabin of the vehicle.

In some embodiments, the first channel is constituted by a first through hole in the body of the HCU in which a receiving portion of a pedal displacement sensor is provided.

In some embodiments, the second channel is constituted by a second through hole in the body of the HCU in which the rack of the pedal displacement sensor is disposed.

In some embodiments, the receiving portion of the pedal displacement sensor is engaged with the rack of the pedal displacement sensor through the gear of the pedal displacement sensor.

In some embodiments, the second channel is constituted by a third through hole in the body of the HCU in which the transmitting portion of the pedal displacement sensor is disposed.

In some embodiments, the second channel communicates with the first channel through a fourth through hole disposed between the first through hole and the third through hole.

In some embodiments, the third channel includes an exhaust vent disposed around the pedal pushrod of the dust cover or on a dust rib of the inner peripheral surface of the dust cover.

According to another aspect of an embodiment of the present application, there is provided a vehicle, wherein the vehicle includes a ventilation device of the electronic control unit ECU according to the previous aspect.

According to still another aspect of the embodiment of the present application, there is provided a ventilation method of an electronic control unit ECU of a vehicle, the ventilation method including: a footwell penetrating an interior space of the ECU and an interior cabin of a vehicle, wherein the footwell penetrating the interior space of the ECU and the interior cabin of the vehicle comprises: penetrating a main body of a brake hydraulic control unit HCU of the vehicle and a main body of the ECU to obtain a first passage; a second passage communicating with the first passage is obtained through a main body of the HCU and an inner space of a dust cover of an electric brake booster of a vehicle; and a foot well portion penetrating the interior space of the dust cover and the interior cabin of the vehicle to obtain a third passage communicating with the second passage.

In some embodiments, acquiring the first channel includes: the first channel is constituted by a first through hole in the body of the HCU in which a receiving portion of a pedal displacement sensor is provided; acquiring a second channel in communication with the first channel includes: the second passage is constituted by a second through hole in the main body of the HCU in which the rack of the pedal displacement sensor is provided, and the receiving portion of the pedal displacement sensor is engaged with the rack of the pedal displacement sensor through the gear of the pedal displacement sensor; or the second passage is constituted by a third through hole in the main body of the HCU in which the transmitting portion of the pedal displacement sensor is provided, and a fourth through hole is provided between the first through hole and the third through hole; acquiring a third channel in communication with the second channel includes: the dustproof cover is provided with exhaust holes around the pedal push rod or on the dustproof ribs on the inner peripheral surface of the dustproof cover.

One of the beneficial effects of the embodiment of the application is that: according to the embodiment of the application, the channel is communicated between the inner space of the ECU and the foot pit part of the inner cabin of the vehicle, so that the inner pressure of the ECU can be kept the same as the outer pressure without using an additional device (such as a ventilation permeable membrane), ventilation and heat dissipation of the ECU are facilitated, electronic components of the ECU are prevented from being damaged, and the cost, the installation time of the ventilation permeable membrane and the production line end-of-line testing time are saved.

Specific embodiments of the application are disclosed in detail below with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the application are not limited in scope thereby. The embodiments of the application include many variations, modifications and equivalents within the spirit and scope of the appended claims.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:

FIG. 1 is a schematic illustration of an electric brake booster for a vehicle in accordance with one embodiment of the present application;

FIG. 2 is a top view of an electric brake booster for a vehicle according to one embodiment of the present application;

FIG. 3 is a cross-sectional view of the electric brake booster taken along line A-A' of FIG. 2;

FIG. 4 is another cross-sectional view of the electric brake booster taken along line B-B' of FIG. 2;

FIG. 5 is a further cross-sectional view of the electric brake booster taken along line C-C' of FIG. 2;

FIG. 6 is a further cross-sectional view of the electric brake booster taken along line D-D' of FIG. 2;

FIG. 7 is a schematic illustration of an electric brake booster for a vehicle in accordance with another implementation of an embodiment of the application;

FIG. 8 is a top view of an electric brake booster for a vehicle according to another implementation of an embodiment of the application;

FIG. 9 is a cross-sectional view of the electric brake booster taken along line E-E' of FIG. 8;

FIG. 10 is another cross-sectional view of the electric brake booster taken along line F-F' of FIG. 8;

FIG. 11 is a further cross-sectional view of the electric brake booster taken along line G-G' of FIG. 8;

FIG. 12 is a further cross-sectional view of the electric brake booster taken along line H-H' of FIG. 8;

fig. 13 is a schematic view of a ventilation method of an electronic control unit ECU of a vehicle according to an embodiment of the application;

fig. 14 is a schematic diagram of a specific application method of 1301 of the embodiment of the present application.

Detailed Description

The foregoing and other features of the application will become apparent from the following description, taken in conjunction with the accompanying drawings. In the specification and drawings, there have been specifically disclosed specific embodiments of the application that are indicative of some of the ways in which the principles of the application may be employed, it being understood that the application is not limited to the specific embodiments described, but, on the contrary, the application includes all modifications, variations and equivalents falling within the scope of the appended claims.

In the embodiments of the present application, the terms "first," "second," and the like are used to distinguish between different elements from each other by name, but do not indicate spatial arrangement or time sequence of the elements, and the elements should not be limited by the terms. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprises," "comprising," "including," "having," and the like, are intended to reference the presence of stated features, elements, components, or groups of components, but do not preclude the presence or addition of one or more other features, elements, components, or groups of components.

In embodiments of the present application, the singular forms "a," an, "and" the "include plural referents and should be construed broadly to mean" one "or" one type "and not limited to" one "or" another; furthermore, the term "comprising" is to be interpreted as including both the singular and the plural, unless the context clearly dictates otherwise. Furthermore, the term "according to" should be understood as "at least partially according to … …", and the term "based on" should be understood as "based at least partially on … …", unless the context clearly indicates otherwise.

In the following description of the present application, unless otherwise specified, a direction from the ECU to the HCU is referred to as "lower" or "lower side", and a direction from the HCU to the ECU is referred to as "upper" or "upper side". It should be noted that these are for convenience of illustration only and are not limiting of the orientation of the ventilation device in use and manufacture.

The following describes the implementation of the embodiment of the present application with reference to the drawings.

Example of the first aspect

An embodiment of a first aspect of the present application provides a ventilation device of an Electronic Control Unit (ECU) of a vehicle. The ventilation device is arranged in the electric brake booster of the vehicle, and a passage is arranged to penetrate through the inner space of the ECU and the foot pit part of the inner cabin of the vehicle, so that the humidity and the temperature which are suitable for the ECU and a person are in the same environment, the internal pressure and the external pressure of the electric brake booster are kept balanced, and ventilation and heat dissipation are facilitated.

Fig. 1 is a schematic view of an electric brake booster of a vehicle according to an embodiment of the present application. As shown in fig. 1, an electric brake booster (booster) 10 may include an ECU 11, a brake hydraulic pressure control unit (HCU) 12, a dust cover 13, a pedal displacement sensor 14 (see later fig. 2 to 5), and a pedal pushrod 15. In the embodiment of the present application, fig. 1 shows only the components of the electric brake booster 10 by way of example, but the embodiment of the present application is not limited thereto, and the electric brake booster 10 of the vehicle may include other components than the above.

Fig. 2 is a plan view of an electric brake booster of a vehicle according to an embodiment of the present application, showing a view of the electric brake booster as seen from the ECU side (upper side); FIG. 3 is a cross-sectional view of the electric brake booster taken along line A-A' of FIG. 2, showing a first passage through the HCU 12 and the ECU 11; FIG. 4 is another cross-sectional view of the electric brake booster taken along line B-B' of FIG. 2, showing a second passage through the HCU 12 and dust cover 13; FIG. 5 is a further cross-sectional view of the electric brake booster taken along line C-C' of FIG. 2, illustrating communication of the second passage with the first passage; fig. 6 is a further cross-sectional view of the electric brake booster taken along line D-D' of fig. 2, showing an enlarged view of a portion of the dust cap 13.

As shown in fig. 2 to 5, the ventilation device 20 penetrates the interior space S1 of the ECU 11 and the foot well (not shown) of the interior cabin of the vehicle, and the ventilation device 20 may include a first passage 21, a second passage 22, and a third passage 23, wherein the first passage 21 penetrates the body 121 of the HCU 12 of the vehicle and the body 111 of the ECU 11, the second passage 22 communicates with the first passage 21, the second passage 22 penetrates the body 121 of the HCU 12 and the dust cover 13 of the electric brake booster 10 of the vehicle, communicates with the interior space S2 of the dust cover 13, the third passage 23 communicates with the second passage 22, and the third passage 23 communicates the interior space S2 of the dust cover 13 and the foot well (not shown) of the interior cabin of the vehicle.

According to the above embodiment, by penetrating one passage (i.e., providing the ventilation device 20) between the interior space S1 of the ECU 11 and the foot well portion of the interior cabin of the vehicle, the internal pressure of the ECU 11 can be kept the same as the external pressure without using an additional device (e.g., ventilation permeable membrane), which is advantageous for ventilation and heat dissipation of the ECU 11, avoids damage to the electronic components of the ECU 11, and saves costs, installation time of the ventilation permeable membrane, and production line end-of-line test time.

In the embodiment of the present application, as shown in fig. 3, the upper surface F1 of the HCU 12 is in contact with the lower surface F2 of the ECU 11, and the first passage 21 may penetrate the upper surface F1 of the HCU 12 and the lower surface F2 of the ECU 11, for example, thereby penetrating the body 121 of the HCU 12 and the body 111 of the ECU 11.

The formation and communication of the three channels of the ventilation device 20 is described below by two specific embodiments.

In one embodiment of the present application, the manner of penetrating the main body 121 of the HCU 12 and the main body 111 of the ECU 11 may be achieved by punching, for example, or the first passage 21 may be constituted by the first through hole 122 in the main body 121 of the HCU 12 in which the receiving portion 141 of the pedal displacement sensor 14 is provided, that is, the first through hole 122 in which the receiving portion 141 of the pedal displacement sensor 14 is provided may be utilized as the first passage 21, as shown in fig. 3, for example. Thus, the conventional through hole is used as the first passage 21, and a complicated punching process can be avoided.

In the present embodiment, as shown in fig. 4, the second passage 22 is constituted by the second through hole 123 of the rack 142 of the pedal displacement sensor 14 provided in the main body 121 of the HCU 12, that is, the second through hole 123 of the rack 142 of the pedal displacement sensor 14 provided therein may be utilized as the second passage 22. This makes it possible to use the conventional through hole as the second passage 22, and thus to avoid a complicated punching process.

In the present embodiment, as shown in fig. 3 and 5, the lower side of the receiving portion 141 of the pedal displacement sensor 14 is provided with the gear 143 of the pedal displacement sensor 14, and the receiving portion 141 of the pedal displacement sensor 14 is engaged with the rack 142 of the pedal displacement sensor 14 through the gear 143 of the pedal displacement sensor 14, that is, the rack 142 of the pedal displacement sensor 14 located in the second through hole 123 is engaged with the gear 143 of the pedal displacement sensor 14 located in the first through hole 122, that is, the second through hole 123 is in direct communication with the first through hole 122, whereby the first passage 21 and the second passage 22 are in direct communication.

In the present embodiment, as shown in fig. 6, for example, a dust bead 131 is provided on the inner peripheral surface of the dust cover 13, and the dust bead 131 is a round of projection provided on the inner peripheral surface of the dust cover 13 for abutting against the connecting member 144 of the pedal displacement sensor 14, and the third passage 23 includes an exhaust hole (not shown) provided on the dust bead 131 on the inner peripheral surface of the dust cover 13. However, the present application is not limited thereto, the dust guard 13 may not be provided with the dust bead 131 on the inner peripheral surface thereof, in which case the dust guard 13 may be provided with the exhaust hole 231 around the pedal push rod 15, that is, the third passage 23 may include the exhaust hole 231 provided around the pedal push rod 15 of the dust guard 13.

That is, the third passage 23 is formed by the inner space S2 of the dust cover 13 communicating with the foot well of the inner cabin of the vehicle through the vent hole 231.

Thus, the ventilation and heat dissipation of the ECU 11 are utilized by providing the exhaust hole 231 to ensure communication of the ECU 11 with the external air pressure.

In practice, the ventilation device 20 of this embodiment should generally be used in an electric brake Booster of the X-boost type.

Fig. 7 is a schematic view of an electric brake booster of a vehicle according to another embodiment of the present application. As shown in fig. 7, an electric brake booster (booster) 10 'may include an ECU 11', a brake Hydraulic Control Unit (HCU) 12', a dust cover 13', a pedal displacement sensor 14 '(see later fig. 8 to 11), and a pedal pushrod 15'. In the embodiment of the present application, fig. 7 shows only the components of the electric brake booster 10 'by way of example, but the embodiment of the present application is not limited thereto, and the electric brake booster 10' of the vehicle may further include other components than the above-described components.

Fig. 8 is a plan view of an electric brake booster of a vehicle of another embodiment of the example of the application, showing a view when the electric brake booster is viewed from the ECU side; FIG. 9 is a cross-sectional view of the electric brake booster taken along line E-E ' of FIG. 8, showing a first passage through the HCU 12' and the ECU 11 '; FIG. 10 is another cross-sectional view of the electric brake booster taken along line F-F ' of FIG. 8, showing a second passage through the HCU 12' and dust cap 13 '; FIG. 11 is a further cross-sectional view of the electric brake booster taken along line G-G' of FIG. 8, illustrating communication of the second passage with the first passage; fig. 12 is still another cross-sectional view of the electric brake booster taken along line H-H 'of fig. 8, showing an enlarged view of a portion of the dust cap 13'.

In another implementation of the embodiment of the present application, as such, the manner of penetrating the main body 121 'of the HCU 12' and the main body 111 'of the ECU 11' may be implemented by punching, for example, or may also utilize existing through holes in the HCU 12 'and the ECU 11', for example, as shown in fig. 9, the first passage 21 may be constituted by the first through hole 122 'in the main body 121' of the HCU 12 'in which the receiving portion 141' of the pedal displacement sensor 14 'is provided, that is, the first through hole 122' in which the receiving portion 141 'of the pedal displacement sensor 14' is provided may be utilized as the first passage 21. Thus, the conventional through hole is used as the first passage 21, and a complicated punching process can be avoided.

In the present embodiment, as shown in fig. 10, the second passage 22 is constituted by the third through hole 123 'in the main body 121' of the HCU 12 'in which the transmitting portion 142' of the pedal displacement sensor 14 'is provided, that is, the third through hole 123' in which the transmitting portion 142 'of the pedal displacement sensor 14' is provided may be utilized as the second passage 22. This makes it possible to use the conventional through hole as the second passage 22, and thus to avoid a complicated punching process.

In the present embodiment, as shown in fig. 11, the second passage 22 communicates with the first passage 21 through the fourth through hole 124 'provided between the first through hole 122' and the third through hole 123 'and through the fourth through hole 124' provided between the first through hole 122 'and the third through hole 123'.

In the present embodiment, the fourth through hole 124' may be obtained by drilling, for example, so that communication between the second passage 22 and the first passage 21 can be obtained by drilling only one through hole between the existing first through hole 122' and the existing third through hole 123 '.

In the present embodiment, in order to facilitate the drilling of the fourth through hole 124', for example, as shown in fig. 11, a connection hole H1 to the first through hole 122' may be drilled in the body 121 'of the HCU 12' through the front wall (right side wall in fig. 11) of the HCU 12', and the drilling of the fourth through hole 124' may be facilitated through the hole H1. In addition, a ball plug (ball plug) may be placed in the hole H1 for sealing the first through hole 122 'from the outside of the HCU 12'.

In the present embodiment, the method of obtaining the fourth through hole 124 'by drilling is exemplified, but the obtaining of the fourth through hole 124' in the present application is not limited thereto, and any other method of obtaining the communication between the first through hole 122 'and the third through hole 123' is included in the present application.

In the present embodiment, as shown in fig. 12, for example, a dust bead 131 'is provided on the inner peripheral surface of the dust cover 13', and the third passage 23 includes an exhaust hole (not shown) provided on the dust bead 131 'on the inner peripheral surface of the dust cover 13'. However, the present application is not limited thereto, the dust-proof rib 131' may not be provided on the inner peripheral surface of the dust cover 13', in which case the exhaust hole 231' may be provided around the pedal push rod 15' of the dust cover 13, that is, the third passage 23 may include the exhaust hole 231' provided around the pedal push rod 15' of the dust cover 13 '.

That is, the third passage 23 is formed by the inner space S2 of the dust cover 13 'communicating with the foot well of the inner cabin of the vehicle through the vent 231'.

Thereby, the communication of the ECU 11 with the external air pressure is ensured by providing the exhaust hole 231', thereby utilizing ventilation and heat dissipation of the ECU 11.

In practice, the ventilation device 20 of this embodiment should be generally applied to an electric brake booster of the Onebox type.

In the embodiment of the present application, fig. 1 shows that the dust cover 13 is a plastic material of a retractable cover, but the present application is not limited thereto, and the dust cover 13 of fig. 1 may be a metal material of a non-retractable cover, and similarly, fig. 7 shows that the dust cover 13 'is a metal material of a non-retractable cover, but the present application is not limited thereto, and the dust cover 13' of fig. 7 may be a plastic material of a retractable cover.

According to the ventilation device of the Electronic Control Unit (ECU) of the vehicle, by penetrating one channel (namely, arranging the ventilation device 20) between the inner space S1 of the ECU 11 and the foot pit part of the inner cabin of the vehicle, the internal pressure of the ECU 11 can be kept the same as the external pressure without using an additional device (such as a ventilation permeable membrane), ventilation and heat dissipation of the ECU 11 are facilitated, damage to electronic components of the ECU 11 is avoided, and cost, installation time of the ventilation permeable membrane and production line end test time are saved.

Embodiments of the second aspect

An embodiment of the second aspect of the present application provides a vehicle having the ventilation device 20 of the electronic control unit ECU according to the embodiment of the first aspect, and since in the embodiment of the first aspect, the main structure of the ventilation device 20 of the electronic control unit ECU has been described in detail, the content thereof is included herein and will not be described again.

According to the vehicle of the embodiment of the second aspect of the present application, by passing through a passage (i.e., providing the ventilation device 20) between the interior space S1 of the ECU 11 and the foot well portion of the interior cabin of the vehicle, the internal pressure of the ECU 11 can be kept the same as the external pressure without using an additional device (e.g., ventilation permeable membrane), which is advantageous for ventilation and heat dissipation of the ECU 11, prevents electronic components of the ECU 11 from being damaged, and saves costs, installation time of the ventilation permeable membrane, and production line end-of-line testing time.

Embodiments of the third aspect

An embodiment of the third aspect of the present application provides a ventilation method of an electronic control unit ECU of a vehicle, which ventilates and dissipates heat to and from the ECU by using a ventilation device of the electronic control unit ECU of the vehicle, and the first, second and third channels in the ventilation device of the electronic control unit ECU have the same structures as those described in the embodiment of the first aspect, and since in the embodiment of the first aspect, the main structures of the first, second and third channels have been described in detail, the contents of which are incorporated herein and will not be repeated.

Fig. 13 is a schematic diagram of a ventilation method of an electronic control unit ECU of a vehicle according to an embodiment of the application.

As shown in fig. 13, the ventilation method of the electronic control unit ECU of the vehicle may include:

1301, a foot well portion penetrating an inner space of the ECU and an inner cabin of the vehicle.

As shown in fig. 14, a footwell portion 1301 penetrating an interior space of an ECU and an interior cabin of a vehicle may include:

1401, penetrating a main body of an HCU and a main body of an ECU of the vehicle to obtain a first passage;

1402 penetrating the main body of the HCU and the inner space of the dust cover of the electric brake booster of the vehicle to obtain a second passage communicating with the first passage; and

1403, a foot well portion that penetrates the interior space of the dust cover and the interior cabin of the vehicle to obtain a third passage that communicates with the second passage.

Therefore, a passage is arranged to penetrate through the inner space of the ECU and the foot pit part of the inner cabin of the vehicle, so that the humidity and the temperature which are suitable for the ECU and a person are in the same environment, the internal pressure and the external pressure of the ECU are kept balanced, and ventilation and heat dissipation are facilitated.

In the embodiment of the present application, the order of the steps 1401 to 1403 described above may be exchanged.

In an embodiment of the present application, step 1401 of acquiring the first channel may specifically include:

the first passage is constituted by a first through hole in the body of the HCU in which the receiving portion of the pedal displacement sensor is provided.

That is, the first channel may be realized by an existing through hole, thereby avoiding cumbersome through processes.

Step 1402 of obtaining a second channel in communication with the first channel may specifically include:

the second channel is formed by a second through hole of a rack of the pedal displacement sensor arranged in the main body of the HCU, and a receiving part of the pedal displacement sensor is meshed with the rack of the pedal displacement sensor through a gear of the pedal displacement sensor; or alternatively

The second passage is constituted by a third through hole in the body of the HCU in which the transmitting portion of the pedal displacement sensor is provided, and a fourth through hole is provided between the first through hole and the third through hole.

That is, the second channel can also be realized by the existing through holes, thereby avoiding cumbersome through-going procedures; and communication between the second channel and the first channel may be implemented differently in different types of boosters, for example in an X-boost type Booster, the second channel is in direct communication with the first channel, whereas in an Onebox type Booster, communication is provided by providing a fourth through hole between the second channel and the first channel.

Step 1403 of acquiring the third channel in communication with the second channel may specifically include:

the periphery of the dust cover surrounding the pedal push rod or the dust rib on the inner peripheral surface of the dust cover is provided with an exhaust hole.

That is, ventilation and heat dissipation of the ECU are utilized by providing exhaust holes on the periphery of the dust cover surrounding the pedal push rod or on the dust ribs of the inner peripheral surface of the dust cover to ensure that the ECU communicates with the external air pressure.

According to the ventilation method of the Electronic Control Unit (ECU) of the vehicle of the embodiment of the third aspect of the application, by penetrating one passage (i.e., providing ventilation means) between the inner space of the ECU and the foot well portion of the inner cabin of the vehicle, the inner pressure of the ECU can be kept the same as the outer pressure without using additional means (e.g., ventilation permeable membrane), thereby facilitating ventilation and heat dissipation of the ECU, avoiding damage to electronic components of the ECU, and saving cost, installation time of the ventilation permeable membrane and production line end test time.

The application has been described in connection with specific embodiments, but it will be apparent to those skilled in the art that these descriptions are intended to be illustrative and not limiting. Various modifications and alterations of this application will occur to those skilled in the art in light of the spirit and principles of this application, and such modifications and alterations are also within the scope of this application.

Preferred embodiments of the present application are described above with reference to the accompanying drawings. The many features and advantages of the embodiments are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of the embodiments which fall within the true spirit and scope thereof. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the embodiments of the application to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope thereof.

Claims

1. A ventilation device of an electronic control unit ECU of a vehicle, characterized in that the ventilation device penetrates an inner space of the ECU and a foot pit portion of an inner cabin of the vehicle, wherein the ventilation device comprises:

a first passage for penetrating a main body of a brake hydraulic control unit HCU of a vehicle and a main body of the ECU;

a second passage communicating with the first passage, for penetrating a main body of the HCU and a dust cover of an electric brake booster of a vehicle, communicating with an inner space of the dust cover;

and the third channel is communicated with the second channel and is used for penetrating through the inner space of the dust cover and the foot pit part of the inner cabin of the vehicle.

2. A ventilation device according to claim 1, characterized in that,

the first passage is constituted by a first through hole in the body of the HCU in which a receiving portion of a pedal displacement sensor is provided.

3. A ventilation device according to claim 2, characterized in that,

the second passage is constituted by a second through hole of a rack provided with the pedal displacement sensor in a main body of the HCU.

4. A ventilating device according to claim 3, wherein the receiving portion of the pedal displacement sensor is engaged with the rack of the pedal displacement sensor through the gear of the pedal displacement sensor.

5. A ventilation device according to claim 2, characterized in that,

the second passage is constituted by a third through hole in the body of the HCU in which the transmitting portion of the pedal displacement sensor is provided.

6. A ventilation device according to claim 5, characterized in that,

the second channel communicates with the first channel through a fourth through hole disposed between the first through hole and the third through hole.

7. A ventilation device according to claim 2, characterized in that,

the third channel comprises exhaust holes which are arranged on the periphery of the dust cover around the pedal push rod or on the dust ribs on the inner peripheral surface of the dust cover.

8. A vehicle characterized in that it comprises a ventilation device of the electronic control unit ECU according to any one of claims 1 to 7.

9. A ventilation method of an electronic control unit ECU of a vehicle, characterized by comprising: a footwell portion penetrating the interior space of the ECU and the interior cabin of the vehicle,

wherein the foothold portion penetrating the interior space of the ECU and the interior cabin of the vehicle includes:

penetrating a main body of a brake hydraulic control unit HCU of the vehicle and a main body of the ECU to obtain a first passage;

a second passage communicating with the first passage is obtained through a main body of the HCU and an inner space of a dust cover of an electric brake booster of a vehicle; and

and a foot pit portion penetrating the inner space of the dust cover and the inner cabin of the vehicle to obtain a third passage communicated with the second passage.

10. A ventilation method according to claim 9, characterized in that,

acquiring the first channel comprises:

the first channel is constituted by a first through hole in the body of the HCU in which a receiving portion of a pedal displacement sensor is provided;

acquiring a second channel in communication with the first channel includes:

the second passage is constituted by a second through hole in the main body of the HCU in which the rack of the pedal displacement sensor is provided, and the receiving portion of the pedal displacement sensor is engaged with the rack of the pedal displacement sensor through the gear of the pedal displacement sensor; or alternatively

The second passage is constituted by a third through hole in the main body of the HCU in which the transmitting portion of the pedal displacement sensor is provided, and a fourth through hole is provided between the first through hole and the third through hole;

acquiring a third channel in communication with the second channel includes:

the dustproof cover is provided with exhaust holes around the pedal push rod or on the dustproof ribs on the inner peripheral surface of the dustproof cover.