Pressure sensor and vehicle

Abstract

The utility model discloses a pressure sensor and a vehicle, the pressure sensor comprises a packaging shell and a sensing device arranged in the packaging shell, the upper surface of the packaging shell is provided with a plurality of air pressure detection holes, the lower surface of the packaging shell comprises a plurality of bonding pads, and the plurality of bonding pads are electrically connected with the sensing device; wherein the plurality of air pressure detection holes are combined to have an indicating mark. According to the utility model, the structure of a traditional pressure sensor is changed by changing the packaging form, the risk that internal devices are polluted is reduced in cooperation with the layout mode that the plurality of air pressure detection holes are arranged on the pressure sensor, the internal devices of the pressure sensor are protected, and the pressure sensor is convenient to use through the specific arrangement mode of the plurality of air pressure detection holes. Therefore, the pressure sensor has high identifiability and is convenient to install quickly.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, especially a kind of pressure sensor and vehicle. BACKGROUND

[0002] Pressure sensors are important components in many applications, for example in the automotive industry. In this field, in particular, pressure sensors in airbag systems and pressure sensors in tire pressure monitoring systems. In addition, the pressure sensor can also be applied to the vehicle body for detecting the collision of the external area of the vehicle, which can specifically detect the pressure in the deformable cavity in the external area of the vehicle as a pressure signal, and determine the degree of collision according to the pressure signal, so as to take corresponding protective measures for passengers.

[0003] In the existing pressure sensor products, the electrical connection pins are extended on the opposite sides, in order to facilitate identification and installation, one of the pins is usually widened. In addition, a large hole is provided in the center of the pressure sensor for pressure detection, so that the part of the internal chip of the pressure sensor exposed to the outside is larger, and the hole is directly opened above the MEMS (Micro-Electro-Mechanical System) sensor, which is easily interfered and damaged by pollutants in the medium, blocked by pollutants, and has the risk of insects crawling in. SUMMARY

[0004] The purpose of the utility model is to provide a pressure sensor, which is improved in structure to solve the above technical problems.

[0005] According to the first aspect of the utility model embodiment, a pressure sensor is provided, which comprises a packaging shell and a sensing device arranged in the packaging shell, the upper surface of the packaging shell is provided with a plurality of air pressure detection holes, the lower surface of the packaging shell comprises a plurality of solder pads, and the plurality of solder pads are electrically connected with the sensing device; wherein the plurality of air pressure detection holes are combined to have an indicative mark.

[0006] The further improvement of the pressure sensor of the utility model is that one of the plurality of air pressure detection holes is set as an identification hole.

[0007] The further improvement of the pressure sensor of the utility model is that the identification hole is asymmetrically arranged relative to the other air pressure detection holes.

[0008] The further improvement of the pressure sensor of the utility model is that the identification hole deviates from the symmetrical shape formed by the other air pressure detection holes.

[0009] The further improvement of the pressure sensor of the utility model lies in that the identification hole is a special-shaped hole different from the shape of other air pressure detection holes.

[0010] The further improvement of the pressure sensor of the utility model lies in that the maximum size of the air pressure detection hole is no more than 1mm.

[0011] The further improvement of the pressure sensor of the utility model lies in that the sensing device is a MEMS sensor.

[0012] The further improvement of the pressure sensor of the utility model lies in that the air pressure detection hole is not directly above the sensing device.

[0013] The further improvement of the pressure sensor of the utility model lies in that the packaging shell and the sensing device are packaged through QFN or DFN technology.

[0014] According to the second aspect of the utility model embodiment, a vehicle is provided, which comprises the pressure sensor according to any one of the above.

[0015] According to the pressure sensor and the vehicle, the structure of the traditional pressure sensor is changed by changing the packaging form, and the layout mode of the plurality of air pressure detection holes is arranged thereon, so that the risk of internal device pollution is reduced, the internal device of the pressure sensor is protected, and the specific arrangement mode of the plurality of air pressure detection holes is used to make the pressure sensor have high identification, and the pressure sensor is convenient to install. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be described in detail through exemplary embodiments with reference to the drawings, wherein:

[0017] Figure 1 A side cross-sectional schematic view of the pressure sensor provided by an embodiment of the utility model is shown;

[0018] Figure 2 A top view structural schematic view of the pressure sensor provided by an embodiment of the utility model is shown.

[0019] The drawings are only schematic and not necessarily drawn to scale, and they only show those parts which are necessary for the understanding of the utility model, while other parts can be omitted or simply mentioned. That is, the utility model can include other components in addition to the components shown in the drawings. DETAILED DESCRIPTION

[0020] The following describes the embodiments of the present application with specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosure. Although the description of the present application will be introduced in combination with the preferred embodiments, this does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications that can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0021] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the present embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "inner" and the like is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the present application is used, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] The terms "first", "second", and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present embodiment, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

[0025] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0026] Figure 1 A side cross-sectional schematic view of a pressure sensor provided by an embodiment of the present application is shown; Figure 2A top view structural schematic diagram of the pressure sensor provided by the embodiment of the utility model is shown.

[0027] With reference to Figure 1 and Figure 2 The pressure sensor 100 of the embodiment of the utility model is applied to a vehicle and is used for detecting external pressure in real time. The pressure sensor 100 comprises a packaging shell 10 and a sensing device 20 arranged in the packaging shell 10. Specifically, the pressure sensor 100 comprises a PCB (Printed Circuit Board) board 30 and a signal processor arranged on the PCB board 30, and the sensing device 20 is mounted on the PCB board 30. Of course, the pressure sensor 100 also comprises other components, which are not described in detail here.

[0028] In the embodiment of the utility model, the upper surface of the packaging shell 10 is provided with a plurality of air pressure detection holes 11, and the lower surface of the packaging shell 10 comprises a plurality of pads (not shown), which are electrically connected with the sensing device 20 and are used for communication connection with external equipment. The packaging shell 10 and the sensing device 20 are packaged by QFN (Quad Flat No-leads Package) or DFN (Direct-Flux-on-Lead) technology, and the packaging mode meets the requirement of small size of the pressure sensor 100.

[0029] In the utility model, the maximum size of the air pressure detection hole 11 is not greater than 1mm. The sensing device 20 can be a MEMS (Micro-Electro-Mechanical System) sensor. In addition, in order to prevent the components inside the pressure sensor 100 from being contaminated, the plurality of air pressure detection holes 11 are not directly above the sensing device 20.

[0030] Since the packaging mode of the utility model removes the traditional scheme of extending the pin, the installation mode of the pressure sensor 100 is identified by the pin, that is, when the pressure sensor 100 is installed, each pin needs to be assembled with the corresponding pin, and if the pin is installed incorrectly, the pressure sensor 100 cannot work normally. Therefore, the application indicates that the pressure sensor 100 has a correct installation mode by combining the plurality of air pressure detection holes 11 into an indicative mark, so that the installation position and angle of the pressure sensor 100 can be quickly identified.

[0031] In an embodiment, one of the plurality of air pressure detection holes 11 is provided as an identification hole 111.

[0032] In yet another embodiment, the identification hole 111 is a special-shaped hole that is different from the shapes of the other air pressure detection holes 11, thereby facilitating the identification of the installation orientation of the pressure sensor 100.

[0033] The utility model discloses a change the structure of traditional pressure sensor by changing the packaging form, and cooperate the layout mode of the multiple air pressure detection holes arranged on it, reduce the risk of internal device being contaminated, be favorable to the protection pressure sensor internal device, and through the specific arrangement mode of multiple air pressure detection holes, so that the pressure sensor has higher identification, and it is convenient to install fast.

[0034] Although the utility model has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood that the above description is further detailed explanation of the utility model in combination with specific embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. Those skilled in the art can make various changes in form and details, including making a number of simple inferences or substitutions, without departing from the spirit and scope of the utility model.

Claims

1. A pressure sensor, characterized by, The pressure sensor comprises a package shell and a sensing device arranged in the package shell, an upper surface of the package shell is provided with a plurality of air pressure detection holes, a lower surface of the package shell comprises a plurality of pads, and the pads are electrically connected with the sensing device; wherein the air pressure detection holes are combined to have an indicative mark.

2. The pressure sensor of claim 1, wherein, One of the air pressure detection holes is arranged as an identification hole.

3. The pressure sensor of claim 2, wherein, The identification hole is asymmetrically arranged relative to other air pressure detection holes.

4. The pressure sensor of claim 3, wherein, The identification hole deviates from a symmetrical shape formed by other air pressure detection holes.

5. The pressure sensor of claim 2, wherein, The identification hole is a special-shaped hole different from other air pressure detection holes.

6. The pressure sensor according to any one of claims 1 to 5, characterized in that, A maximum size of the air pressure detection hole is not greater than 1 mm.

7. The pressure sensor of claim 1, wherein, The sensing device is a MEMS sensor.

8. The pressure sensor according to claim 1 or 7, characterized in that The air pressure detection hole does not correspond to a position directly above the sensing device.

9. The pressure sensor of claim 1, wherein, The package shell and the sensing device are packaged by QFN or DFN technology.

10. A vehicle characterized by comprising: The pressure sensor comprises a package shell and a sensing device arranged in the package shell, an upper surface of the package shell is provided with a plurality of air pressure detection holes, a lower surface of the package shell comprises a plurality of pads, and the pads are electrically connected with the sensing device; wherein the air pressure detection holes are combined to have an indicative mark. One of the air pressure detection holes is arranged as an identification hole. The identification hole is asymmetrically arranged relative to other air pressure detection holes. The identification hole deviates from a symmetrical shape formed by other air pressure detection holes. The identification hole is a special-shaped hole different from other air pressure detection holes. A maximum size of the air pressure detection hole is not greater than 1 mm. The sensing device is a MEMS sensor. The air pressure detection hole does not correspond to a position directly above the sensing device. The package shell and the sensing device are packaged by QFN or DFN technology. The pressure sensor comprises a package shell and a sensing device arranged in the package shell, an upper surface of the package shell is provided with a plurality of air pressure detection holes, a lower surface of the package shell comprises a plurality of pads, and the pads are electrically connected with the sensing device; wherein the air pressure detection holes are combined to have an indicative mark. One of the air pressure detection holes is arranged as an identification hole. The identification hole is asymmetrically arranged relative to other air pressure detection holes. The identification hole deviates from a symmetrical shape formed by other air pressure detection holes. The identification hole is a special-shaped hole different from other air pressure detection holes. A maximum size of the air pressure detection hole is not greater than 1 mm. The sensing

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