CN113183737B - Sensors, quick-change bracket assemblies and electric vehicles - Google Patents

Abstract

The invention discloses a sensor, a quick-change bracket assembly and an electric automobile. The sensor comprises: a base; the sensing element is arranged on the base and is used for sensing an object to be detected and generating a signal; a transmission part which is in communication connection with the sensing element and is used for transmitting signals; the connector is connected to one end of the transmission part, which is far away from the sensing element, and the connector is used for being connected to an external wire harness. The quick-change bracket component comprises a quick-change bracket, a battery pack and a sensor, wherein the battery pack is provided with an induction object element for being induced by the induction element. The electric automobile comprises a quick-change bracket component and a chassis. Through being connected to the quick change support with the base on, can be comparatively convenient install the sensor on the quick change support, and the space that occupies on the quick change support is less to be favorable to realizing the lightweight of quick change support subassembly and electric automobile.

Description

Sensors, quick-change bracket assemblies and electric vehicles

Technical Field

The invention relates to the field of electric vehicles, and in particular to a sensor, a quick-change bracket assembly and an electric vehicle.

Background technique

Electric vehicles use electricity instead of oil, can achieve zero emissions and low noise, and are an important means to solve energy and environmental problems. With the shortage of oil resources and the development of battery technology, electric vehicles have approached or even surpassed traditional fuel vehicles in terms of performance and economy, and have begun to be gradually promoted and applied worldwide. The new generation of energy-saving and environmentally friendly vehicles represented by electric vehicles is an inevitable trend in the development of the automobile industry. As an important prerequisite and foundation for the large-scale promotion and application of electric vehicles, the development of electric vehicle charging and swapping technology and the construction of electric vehicle charging and swapping facilities have attracted widespread attention from all parties.

For electric vehicles that require battery replacement, the battery needs to be replaced regularly or irregularly. The quick-change bracket is a relatively important component of the electric vehicle. The battery pack is fixed to the quick-change bracket, and the quick-change bracket is connected to the chassis of the electric vehicle. The quick-change bracket is provided with a locking mechanism for fixing the battery pack, and is also provided with multiple sensors, including an upper position sensor for detecting whether the battery pack has reached a preset position relative to the quick-change bracket in the height direction of the battery pack, and a front position sensor for detecting whether the battery pack has reached a preset position relative to the quick-change bracket in the length direction of the battery pack.

Among them, in the prior art, the sensor used on the quick-change bracket needs to occupy a large space, and multiple sensors need to be installed on the quick-change bracket. The large space occupied on the quick-change bracket will also make the quick-change bracket assembly (including the quick-change bracket, battery pack, sensor and locking mechanism, etc.) heavier, which is not conducive to achieving lightweight quick-change bracket assembly.

As can be seen from the above, the sensors used on the quick-change bracket in the prior art have the defects of occupying a large space and being unfavorable for achieving lightweight of the quick-change bracket assembly.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the defects of the sensors used on the quick-change bracket in the prior art that they occupy a large space and are not conducive to lightweighting the quick-change bracket assembly, and to provide a sensor, a quick-change bracket assembly and an electric vehicle.

The present invention solves the above technical problems through the following technical solutions:

A sensor, characterized in that it comprises:

Pedestal;

A sensing element, mounted on the base, for sensing the object to be detected and generating a signal;

A transmission unit, connected to the sensing element for transmitting the signal;

A connector is connected to an end of the transmission portion away from the sensing element, and the connector is used to connect to an external wiring harness.

In this solution, by connecting the base to the external element, the sensor can be installed on the external element, and the sensor occupies less space on the external element. Accordingly, when the sensor is applied to an electric vehicle, the external element can be a quick-change bracket, so that the sensor can be installed on the quick-change bracket more conveniently, and the space occupied on the quick-change bracket is small, which is conducive to achieving lightweighting of the electric vehicle.

Preferably, the base has an accommodating cavity inside, and the sensing element is embedded in the accommodating cavity.

In the present solution, the above-mentioned structural setting is adopted. On the one hand, the sensing element is embedded in the base, which is more conducive to reducing the space occupied by the sensor on the quick-change bracket and is conducive to further realizing the lightweight of the electric vehicle; on the other hand, the sensing element is located in the above-mentioned accommodating cavity, which is conducive to protecting the sensing element from damage and ensuring the reliability of the sensor.

Preferably, the accommodating cavity comprises a first accommodating cavity and a second accommodating cavity which are connected to each other, the base comprises a body and an extension portion, the top of the body is provided with an opening, and the inside of the body comprises the first accommodating cavity which is connected to the opening;

The extending portion extends outward from the bottom of the main body, the extending portion has the second accommodating cavity formed therein, and the sensing element is embedded in the second accommodating cavity.

In this solution, the sensing element can be placed from the first accommodating cavity and finally located in the second accommodating cavity, wherein the cross-sectional dimension of the first accommodating cavity is not smaller than the cross-sectional dimension of the second accommodating cavity.

Preferably, the base further comprises a connection cover, and the connection cover is detachably connected to the opening for opening or closing the opening.

In this solution, when the sensing element needs to be placed in or taken out, the connection cover opens the opening, which can conveniently place or take out the sensing element. After the sensing element is placed in, the connection cover closes the opening, which can protect the sensing element and the interior of the base.

Preferably, the connector includes an electrical connection portion and a housing located outside the electrical connection portion, and the electrical connection portion is connected to the transmission portion;

The sensor further comprises a sheath, wherein the sheath cover is arranged outside the transmission part, and the sheath is connected between the base and the shell.

In this solution, the sheath can protect the transmission part. In fact, after the sheath, the base and the shell are connected together, they play the role of a protective shell as a whole. Core components such as the sensing element, the transmission part and the electrical connection part are located in the protective shell.

The present invention also provides a quick-change bracket assembly, comprising a quick-change bracket and a battery pack, wherein the battery pack is mounted on the inner side wall of the quick-change bracket, and wherein the quick-change bracket assembly further comprises the above-mentioned sensor, and the base is detachably connected to the quick-change bracket;

Wherein, a sensing object element for being sensed by the sensing element is provided on the battery pack.

In this solution, by connecting the base to the quick-change bracket, the sensor and the quick-change bracket can be connected more conveniently, and the sensor occupies less space on the quick-change bracket, which is conducive to lightweighting the quick-change bracket assembly. After the sensing element on the sensor senses the sensing object element on the battery pack, it can generate a corresponding signal and transmit the signal.

Preferably, the sensing object element is a magnetic steel.

In this solution, the magnet is used as the sensing object element. On the one hand, the magnet can be conveniently set on the battery pack; on the other hand, the induction between the magnet and the sensing element is more reliable.

Preferably, the base is located on an outer side wall of the quick-change bracket.

In this solution, by adopting the above-mentioned structural arrangement, the sensor can be easily installed on the quick-change bracket or removed from the quick-change bracket.

Preferably, the quick-change bracket assembly further comprises a locking mechanism for locking and fixing the battery pack, and the locking mechanism is arranged on the inner side wall of the quick-change bracket;

A nut is preset at a position corresponding to the locking mechanism in the outer wall of the quick-change bracket, and a mounting hole is provided on the base. The base is connected to the quick-change bracket by a fastener passing through the mounting hole and being threadedly connected to the nut.

In the present solution, the above-mentioned structural setting is adopted. On the one hand, the base can be installed on the quick-change bracket more conveniently, quickly and reliably; on the other hand, the structure for connecting the base and the quick-change bracket is relatively simple, which can further reduce the space occupied by the sensor on the quick-change bracket, which is conducive to further realizing the lightweight of the electric vehicle.

Preferably, the quick-change bracket assembly further comprises an external wiring harness, which is connected to the connector and fixed to an outer edge of the quick-change bracket.

In this solution, the external wiring harness is arranged at the outer edge of the quick-change bracket, which can further reduce the space occupied by the detection device including the sensor and the external wiring harness on the quick-change bracket.

Preferably, the quick-change bracket has a vehicle body mounting plate and a mounting plate battery pack fixing plate, the battery pack fixing plate is used to install and fix the battery pack, and the mounting plate vehicle body mounting plate is used to connect to the chassis of the electric vehicle;

The vehicle body mounting plate includes a first mounting plate and a first connecting plate, the first mounting plate is used to connect and be mounted on the chassis, the battery pack fixing plate includes a second mounting plate and a second connecting plate, the locking mechanism is arranged on a side of the second mounting plate facing the battery pack, one end of the second connecting plate is connected to the top end of the second mounting plate, the first connecting plate is connected between the other end of the second connecting plate and the first mounting plate, and the vertical distance between the bottom ends of the first mounting plate and the second mounting plate is less than the vertical height of the second mounting plate;

The base is arranged on a side of the second mounting plate away from the battery pack.

In the present embodiment, the cross-sectional shape of the quick-change bracket is similar to a T-shape. The above-mentioned structural setting is adopted, which is equivalent to the first mounting plate being located in the middle part of the second mounting plate (not equivalent to the center part). Therefore, when the first mounting plate is connected to the chassis, the distance between the chassis and the locking mechanism can be reduced, which is beneficial to improve the rigidity and further beneficial to improve the fixing effect of the battery pack.

Preferably, the quick-change bracket assembly further comprises an external wiring harness, and the external wiring harness is connected to the connector;

A plurality of fixing parts are arranged at intervals on the outer edge of the first mounting plate, and the external wiring harness is fixed to the outer edge of the quick-change bracket through the plurality of fixing parts.

In this solution, the external wiring harness is fixed to the quick-change bracket through a fixing part. Under the action of the fixing part, the external wiring harness can be more reliably set on the outer edge of the quick-change bracket. On the one hand, the external wiring harness is not easily damaged by external components, which is conducive to the reliable detection and transmission of signals; on the other hand, the external wiring harness can also be routed more neatly and has a more beautiful appearance.

Preferably, a fixing hole is provided on the fixing portion, and the quick-change bracket assembly further comprises a plurality of fixing clips, each of the fixing clips comprising a first fixing portion and a second fixing portion connected to each other;

The first fixing part is formed with a receiving hole for the external wiring harness to pass through, and the second fixing part is passed through and fixed to the fixing hole.

In this solution, the first fixing part is used for the external wiring harness to pass through, and the second fixing part is used to fix the fixing clip to the quick-change bracket, so that the external wiring harness can be fixed to the quick-change bracket more conveniently and reliably. In addition, the structure of the fixing clip is relatively simple, and the weight can also be very small (such as made of plastic material, but not limited to plastic material), so that the fixing clip has little effect on the overall weight of the quick-change bracket assembly, which is conducive to further realizing the lightweight of the electric vehicle.

Preferably, the first fixing part comprises two mutually connected split structures, and the first fixing part can be switched between an open state and a closed state;

Wherein, when in the open state, one end of the two split structures is connected, and the other end is formed with a receiving opening for the external wiring harness to pass through;

When in the closed state, the two ends of the two separate structures are connected one by one to form a closed ring structure.

In the present solution, the above structure is adopted, and the first fixed part is similar to the loose-leaf ring structure used in a loose-leaf book, which is convenient to use. By applying appropriate external force, the first fixed part can be switched between the open state and the closed state.

Preferably, the first fixing portion is switchable between an extended state and a bent state;

Wherein, when in the extended state, the first fixing portion is a linear structure;

When in the bent state, the first fixing portion is bent to form an annular structure having the accommodating hole.

In the present solution, the above-mentioned structural setting is adopted, and the first fixing part is a structure similar to a belt or a bracelet, and the structure is also relatively simple, which is convenient for fixing the external wiring harness.

Preferably, the fixing clip further includes a limiting portion, the limiting portion is connected between the first fixing portion and the second fixing portion, and the limiting portion is in contact with the fixing portion.

In the present solution, the above-mentioned structural setting is adopted. On the one hand, the limiting portion can limit the maximum depth of the fixing clip extending into the fixing hole; on the other hand, the limiting portion is attached to the fixing portion, thereby increasing the contact area between the fixing clip and the fixing portion, which is beneficial to improving the reliability of the fixing clip, and further beneficial to improving the reliability of the external wiring harness fixation.

The present invention also provides an electric vehicle, comprising a chassis, wherein the electric vehicle further comprises the quick-change bracket assembly, and the quick-change bracket is connected to the chassis.

In this solution, the electric vehicle including the quick-change bracket assembly can be easily lightweight.

On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

The positive and progressive effects of the present invention are:

In the sensor, by connecting the base to the external element, the sensor can be mounted on the external element, and the sensor occupies less space on the external element. Accordingly, when the sensor is applied to an electric vehicle, the external element can be a quick-change bracket, so that the sensor can be mounted on the quick-change bracket more conveniently, and the space occupied on the quick-change bracket is less, which is conducive to achieving lightweighting of the electric vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the structure of a sensor according to a preferred embodiment of the present invention.

FIG. 2 is another schematic diagram of the structure of a sensor according to a preferred embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a quick-change bracket assembly according to a preferred embodiment of the present invention.

FIG. 4 is a partial structural schematic diagram of a quick-change bracket in a quick-change bracket assembly according to a preferred embodiment of the present invention, and the figure mainly shows the cross-sectional shape of the quick-change bracket.

FIG. 5 is a schematic diagram of another part of the structure of the quick-change bracket in the quick-change bracket assembly according to a preferred embodiment of the present invention, showing the recessed portion on the first mounting plate.

FIG. 6 is a schematic diagram of another part of the structure of the quick-change bracket in the quick-change bracket assembly of a preferred embodiment of the present invention, showing the first protrusion and the second protrusion on the first mounting plate.

FIG. 7 is a schematic diagram of another part of the structure of the quick-change bracket in the quick-change bracket assembly according to a preferred embodiment of the present invention, showing a locking mechanism installed on the second mounting plate.

FIG. 8 is a partial structural schematic diagram of a quick-change bracket assembly according to a preferred embodiment of the present invention.

FIG. 9 is a schematic diagram of another part of the structure of the quick-change bracket assembly according to a preferred embodiment of the present invention.

FIG. 10 is a schematic diagram of another portion of the structure of a quick-change bracket assembly according to a preferred embodiment of the present invention.

Description of reference numerals:

10 Body mounting plate

101 First mounting plate

102 first connecting plate

103 first protrusion

104 second protrusion

1041 Body mounting holes

105 Depression

106 Fixed part

1061 Fixing hole

20 Battery pack fixing plate

201 Second mounting plate

202 Second connecting plate

30 Beam

40 rear beam

50 Locking mechanism

60 Sensors

601 Base

6011 Body

6012 Extension

6013 Connection cover

6014 Mounting holes

602 Transmission Department

603 Sheath

604 Connector

605 Housing

70 Fixing clip

701 First fixed part

702 Second fixed part

703 Limiting part

80 Positioning mechanism

90 External wiring harness

Detailed ways

The present invention is further described below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the following embodiments.

This embodiment discloses a sensor 60, as shown in Figures 1-3 and Figures 8-10, the sensor 60 includes a base 601, a sensing element (not shown in the figure), a transmission part 602 (not shown in the figure) and a connector 604. The sensing element is mounted on the base 601, and is used to sense the object to be measured and generate a signal. The transmission part 602 is connected to the sensing element for transmitting the signal. The connector 604 is connected to one end of the transmission part 602 away from the sensing element, and the connector 604 is used to connect to the external wiring harness 90.

In this embodiment, by connecting the base 601 to the external element, the sensor 60 can be installed on the external element, and the space occupied by the sensor 60 on the external element is small. Accordingly, when the sensor 60 is applied to an electric vehicle, the external element can be a quick-change bracket, so that the sensor 60 can be installed on the quick-change bracket more conveniently, and the space occupied on the quick-change bracket is small, which is conducive to achieving lightweighting of the electric vehicle.

Referring to Figures 1-2 and 8-10, it can be understood that the base 601 has a receiving cavity inside, and the sensing element is embedded in the receiving cavity. On the one hand, the sensing element is embedded in the base 601, which is more conducive to reducing the space occupied by the sensor 60 on the quick-change bracket, which is conducive to further realizing the lightweight of the electric vehicle; on the other hand, the sensing element is located in the above-mentioned receiving cavity, which is conducive to protecting the sensing element from damage and ensuring the reliability of the sensor 60.

Specifically, the accommodating cavity includes a first accommodating cavity and a second accommodating cavity that are connected. The base 601 has a body 6011 and an extension portion 6012. The top of the body 6011 is provided with an opening, and the interior of the body 6011 has a first accommodating cavity that is connected to the opening. The extension portion 6012 extends outward from the bottom of the body 6011, and a second accommodating cavity is formed in the extension portion 6012. The sensing element is embedded in the second accommodating cavity.

The sensing element can be placed from the first accommodating cavity and finally located in the second accommodating cavity, wherein the cross-sectional dimension of the first accommodating cavity is not less than the cross-sectional dimension of the second accommodating cavity.

1-2 and 8-10 , the base 601 further includes a connection cover 6013 , which is detachably connected to the opening for opening or closing the opening.

When the sensing element needs to be put in or taken out, the connection cover 6013 opens the opening, which can conveniently put the sensing element in or take out. After the sensing element is put in, the connection cover 6013 closes the opening, which can protect the sensing element and the interior of the base 601.

Furthermore, the connector 604 includes an electrical connection part and a housing 605 located outside the electrical connection part, and the electrical connection part is connected to the transmission part 602. The sensor 60 also includes a sheath 603, which is covered outside the transmission part 602 and connected between the base 601 and the housing 605.

Among them, the sheath 603 can protect the transmission part 602. In fact, after the sheath 603, the base 601 and the shell 605 are connected together, they play the role of a protective shell as a whole. The core components such as the sensing element, the transmission part 602 and the electrical connection part are located in the protective shell.

As shown in FIG3-10, this embodiment also discloses a quick-change bracket assembly, which includes a quick-change bracket and a battery pack, the battery pack being mounted on the inner side wall of the quick-change bracket, and the quick-change bracket assembly further includes the above-mentioned sensor 60, and the base 601 is detachably connected to the quick-change bracket. The battery pack is provided with a sensing object element for being sensed by the sensing element.

In this embodiment, by connecting the base 601 to the quick-change bracket, the sensor 60 can be connected to the quick-change bracket more conveniently, and the sensor 60 occupies less space on the quick-change bracket, which is conducive to achieving lightweight quick-change bracket assembly. After the sensing element on the sensor 60 senses the sensing object element on the battery pack, it can generate a corresponding signal and transmit the signal.

In this embodiment, the sensing object element is a magnetic steel, but is not limited to a magnetic steel. Among them, the magnetic steel is used as the sensing object element. On the one hand, the magnetic steel can be more conveniently set on the battery pack; on the other hand, the induction between the magnetic steel and the sensing element is more reliable.

As shown in Fig. 3 and Fig. 8-10, the base 601 is located on the outer side wall of the quick-change bracket. With such arrangement, the sensor 60 can be conveniently installed on the quick-change bracket or removed from the quick-change bracket.

As shown in Fig. 3, Fig. 7 and Fig. 10, the quick-change bracket assembly further includes a locking mechanism 50 for locking and fixing the battery pack, and the locking mechanism 50 is arranged on the inner side wall of the quick-change bracket. A nut is preset at a position corresponding to the locking mechanism 50 in the outer side wall of the quick-change bracket, and a mounting hole 6014 is arranged on the base 601. The base 601 is connected to the quick-change bracket by fasteners passing through the mounting hole 6014 and being threadedly connected to the nut.

Among them, on the one hand, the base 601 can be installed on the quick-change bracket more conveniently, quickly and reliably; on the other hand, the structure for connecting the base 601 with the quick-change bracket is relatively simple, which can further reduce the space occupied by the sensor 60 on the quick-change bracket, which is conducive to further realizing the lightweight of the electric vehicle.

It should be noted that, in the quick-change bracket assembly, the sensor 60 may be an upper position sensor, a front position sensor 60, etc. Among them, the upper position sensor is used to detect whether the battery pack moves into position relative to the quick-change bracket in the height direction of the battery pack, and the front position sensor is used to detect whether the battery pack moves into position relative to the quick-change bracket in the length direction of the battery pack.

As shown in Fig. 3 and Fig. 8-10, the quick-change bracket assembly further includes an external harness 90, which is connected to the connector 604 and fixed to the outer edge of the quick-change bracket. The external harness 90 is arranged at the outer edge of the quick-change bracket to further reduce the space occupied by the detection device including the sensor 60 and the external harness 90 on the quick-change bracket.

As shown in FIG3-10, the quick-change bracket has a body mounting plate 10 and a mounting plate battery pack fixing plate 20, the battery pack fixing plate 20 is used to install and fix the battery pack, and the mounting plate body mounting plate 10 is used to connect the chassis of the electric vehicle. The body mounting plate 10 includes a first mounting plate 101 and a first connecting plate 102, the first mounting plate 101 is used to connect and install on the chassis, the battery pack fixing plate 20 includes a second mounting plate 201 and a second connecting plate 202, the locking mechanism 50 is arranged on the side of the second mounting plate 201 facing the battery pack, one end of the second connecting plate 202 is connected to the top of the second mounting plate 201, the first connecting plate 102 is connected between the other end of the second connecting plate 202 and the first mounting plate 101, and the vertical distance between the bottom ends of the first mounting plate 101 and the second mounting plate 201 is less than the vertical height of the second mounting plate 201. The base 601 is arranged on the side of the second mounting plate 201 away from the battery pack.

Among them, the cross-sectional shape of the quick-change bracket is similar to a T-shape. The above-mentioned structural setting is equivalent to the first mounting plate 101 being located in the middle part (not equivalent to the center part) of the second mounting plate 201, so that when the first mounting plate 101 is connected to the chassis, the distance between the chassis and the locking mechanism 50 can be reduced, which is beneficial to improve the rigidity and further beneficial to improve the fixing effect of the battery pack.

An accommodating space is formed between the second mounting plate 201, the second connecting plate 202, the first connecting plate 102 and the first mounting plate 101. The sensor 60 and a sensor fixing structure for fixing the sensor 60 are located in the accommodating space.

As shown in FIG3 , the quick-change bracket includes a cross beam 30, two longitudinal beams arranged opposite to each other, and a rear beam 40. The cross beam 30 is connected between the two longitudinal beams and forms a frame structure with an opening. The rear beam 40 is connected at a position corresponding to the opening and is located above the longitudinal beam. In this embodiment, the cross-sectional shape of the longitudinal beam is the T-shaped shape mentioned above, and the longitudinal beam includes the vehicle body mounting plate 10 and the battery pack fixing plate 20. It should be noted that FIG1 only schematically shows a rear beam 40.

Referring to Figs. 3-7, it can be understood that a first angle is formed between the first mounting plate 101 and the first connecting plate 102, a second angle is formed between the second mounting plate 201 and the second connecting plate 202, and a third angle is formed between the first connecting plate 102 and the second connecting plate 202; wherein the second angle is 90 degrees, and the first angle and the third angle are both greater than or equal to 90 degrees and less than 180 degrees. Such a configuration facilitates the connection between the second connecting plate 202, the first mounting plate 101, etc. and external components, thereby facilitating the connection between the quick-change bracket and external components.

It should be noted that the preferred angle ranges of the first angle and the third angle are both 90 degrees to 120 degrees. Such an arrangement is beneficial to ensuring the overall stability of the quick-change bracket and to achieving the connection between the quick-change bracket and the external components.

Specifically, in this embodiment, as shown in Figures 4 and 7, the second connecting plate 202 is parallel to the first mounting plate 101, so that the first angle is equal to the third angle. In addition, the first angle and the third angle are both 120 degrees.

In this embodiment, the vertical distance between the center position of the locking mechanism 50 and the first mounting plate 101 is 0. This arrangement enables the center positions of the chassis and the locking mechanism 50 to be located on the same horizontal plane when the first mounting plate 101 is connected to the chassis, and the vertical distance between the center positions of the chassis and the locking mechanism 50 is minimized, thereby further improving the rigidity and further improving the fixing effect of the battery pack.

It should be noted that in other alternative embodiments, according to actual design requirements, the vertical distance between the center position of the locking mechanism 50 and the first mounting plate 101 can be set to any other value between 0 and 5 mm. When the vertical distance is set within the above range, the distance between the chassis and the center position of the locking mechanism 50 is also very small, which can also improve the rigidity compared to the prior art, thereby improving the fixing effect of the battery pack.

It should be noted that the locking mechanism 50 shown in FIG. 3 , FIG. 7 and FIG. 10 is only a schematic illustration of one of the locking mechanisms. In fact, the locking mechanism includes a first locking mechanism and a second locking mechanism, wherein the first locking mechanism is a primary locking mechanism, which is used to lock and fix the battery. For details of the primary locking mechanism, please refer to the "locking device" disclosed in the Chinese patent application with publication number CN106427514A; the second locking mechanism is a secondary locking mechanism, which can provide a locking protection function for the battery pack, and can be used to prevent the battery pack from falling when the locking of the first locking mechanism fails, thereby improving safety performance. Among them, the locking mechanism 50 shown in FIG. 3 , FIG. 7 and FIG. 10 is the corresponding secondary locking mechanism.

As shown in Fig. 4 and Fig. 6, a first protrusion 103 is provided at a position on the first mounting plate 101 corresponding to the position on the second mounting plate 201 where the locking mechanism 50 is installed. The first protrusion 103 extends from the first mounting plate 101 along the height direction of the second mounting plate 201 in the height direction; and extends from the first mounting plate 101 toward the direction close to the second mounting plate 201 in the length direction.

Among them, the first protrusion 103 is located on the side of the first mounting plate 101 connected to the chassis. The first protrusion 103 can play a role in raising and avoiding, facilitating the installation of the locking mechanism 50 and the second mounting plate 201, which is beneficial to improving the assembly efficiency of the quick-change bracket.

It should be noted that, in other alternative embodiments, the first protrusion 103 is not limited to being set at a position corresponding to the locking mechanism. In fact, according to actual needs, the first protrusion 103 can be set at a position corresponding to other structures installed on the second mounting plate 201. For example, the first protrusion 103 can also be set at a position corresponding to the positioning mechanism 80 (as shown in Figure 9, the positioning mechanism 80 is used to position the battery pack. The positioning mechanism 80 can be set as a positioning seat. The positioning seat is provided with an opening and a cavity extending from the opening. The opening is used for a lock shaft installed on the battery pack to enter the cavity).

Specifically, in this embodiment (see FIG. 6 ), the top surface of the first protrusion 103 is an arc surface. The arc surface occupies less space and is smooth without edges and corners, which can reduce or even avoid damage to external components. Therefore, the above structural setting can facilitate the installation of the locking mechanism 50 and the second mounting plate 201 while reducing damage to external components.

As shown in FIG5 , a recessed portion 105 is provided on the first mounting plate 101 at a position corresponding to the position where the locking mechanism 50 is installed on the second mounting plate 201. In the width direction of the first mounting plate 101, the recessed portion 105 extends from a side of the first mounting plate 101 close to the second mounting plate 201 to a side away from the second mounting plate 201.

It should be noted that the recessed portion 105 is located on the back side of the first mounting plate 101 for connecting with the chassis, that is, when the first mounting plate 101 is connected to the chassis, the recessed portion 105 and the chassis are located on both sides of the first mounting plate 101. The provision of the recessed portion 105 forms a raised portion on the side of the first mounting plate 101 for connecting with the chassis, and the raised portion can play a cushioning role, facilitating the installation of the locking mechanism 50 and the second mounting plate 201, which is conducive to improving the assembly efficiency of the quick-change bracket.

In fact, the functions of the recessed portion 105 and the first raised portion 103 are basically the same, wherein the first raised portion 103 directly protrudes from the side of the first mounting plate 101 connected to the chassis, while the recessed portion 105 is formed by recessing the side of the first mounting plate 101 that is away from the chassis, thereby forming a raised portion on the side of the first mounting plate 101 that is connected to the chassis.

As shown in Fig. 3-4 and Fig. 6-7, a plurality of second protrusions 104 are arranged at intervals along the length direction on the first mounting plate 101, and the plurality of second protrusions 104 extend from the first mounting plate 101 along the height direction of the second mounting plate 201. The top surfaces of the plurality of second protrusions 104 are all planes, and the first mounting plate 101 is used to connect with the chassis through the plurality of second protrusions 104, and the top surfaces of the plurality of second protrusions 104 are used to fit the chassis.

In this embodiment, the provision of the second protrusion 104 is conducive to achieving reliable fitting between the first mounting plate 101 and the chassis, and further conducive to achieving reliability of connection between the first mounting plate 101 and the chassis.

As shown in FIGS. 3-4 and 6 , a vehicle body mounting hole 1041 is provided at the top of each second protrusion 104 , and the second protrusion 104 is used to be detachably connected to the chassis through the vehicle body mounting hole 1041 .

As shown in Figs. 5-6 and 8-10, a plurality of fixing parts 106 are arranged at intervals on the outer edge of the first mounting plate 101, and the external wiring harness 90 is fixed to the outer edge of the quick-change bracket through the plurality of fixing parts 106. The external wiring harness 90 is fixed to the quick-change bracket through the fixing parts 106. Under the action of the fixing parts 106, the external wiring harness 90 can be more reliably arranged on the outer edge of the quick-change bracket. On the one hand, the external wiring harness 90 is not easily damaged by external elements, which is conducive to the reliable detection and transmission of signals; on the other hand, the external wiring harness can also be routed more neatly, and the appearance is more beautiful.

Specifically, a fixing hole 1061 is provided on the fixing portion 106, and the quick-change bracket assembly further includes a plurality of fixing clips 70, each fixing clip 70 including a first fixing portion 701 and a second fixing portion 702 connected to each other; wherein the first fixing portion 701 is formed with a receiving hole for the external wiring harness 90 to pass through, and the second fixing portion 702 is passed through and fixed to the fixing hole 1061. The first fixing portion 701 is for the external wiring harness 90 to pass through, and the second fixing portion 702 is used to achieve the fixing of the fixing clip 70 and the quick-change bracket, so that the external wiring harness 90 can be fixed to the quick-change bracket more conveniently and reliably. In addition, the structure of the fixing clip 70 is also relatively simple, and the weight can also be very small (such as being made of plastic material, but not limited to plastic material), so that the fixing clip 70 has little effect on the overall weight of the quick-change bracket assembly, which is conducive to further achieving lightweight electric vehicles.

In this embodiment, the first fixing portion 701 can switch between an extended state and a bent state. When in the extended state, the first fixing portion 701 is a linear structure; when in the bent state, the first fixing portion 701 is bent to form a ring structure with an accommodating hole. The first fixing portion 701 is a structure similar to a belt or a bracelet, and the structure is relatively simple, which facilitates the fixing of the external harness 90.

In other alternative embodiments, the first fixed portion 701 can also be configured to include two mutually connected split structures, and the first fixed portion 701 can switch between an open state and a closed state. When in the open state, one end of the two split structures is connected, and the other end is formed with a receiving port for the external wiring harness 90 to pass through. When in the closed state, the two ends of the two split structures are connected one by one to form a closed annular structure. In this way, the first fixed portion 701 is similar to the loose-leaf ring structure used in a loose-leaf book, which is more convenient to use. By applying appropriate external force, the first fixed portion 701 can be switched between the open state and the closed state.

As shown in FIG. 10 , the fixing clip 70 further includes a limiting portion 703 , which is connected between the first fixing portion 701 and the second fixing portion 702 , and is attached to the fixing portion 106 .

In the present solution, the above-mentioned structural setting is adopted. On the one hand, the limiting portion 703 can limit the maximum depth of the fixing clip 70 extending into the fixing hole 1061; on the other hand, the limiting portion 703 is attached to the fixing portion 106, thereby increasing the contact area between the fixing clip 70 and the fixing portion 106, which is beneficial to improving the reliability of the fixing clip 70, and further beneficial to improving the reliability of the fixation of the external wiring harness 90.

This embodiment also discloses an electric vehicle, which includes a chassis and the quick-change bracket assembly, wherein the quick-change bracket is connected to the chassis.

Although the specific embodiments of the present invention are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims (15)

1. A sensor, characterized in that it comprises:

A base;

The sensing element is arranged on the base and is used for sensing an object to be detected and generating a signal;

A transmission part which is in communication connection with the induction element and is used for transmitting the signal;

The connector is connected to one end, far away from the induction element, of the transmission part and is used for being connected to an external wire harness;

the inside of the base is provided with a containing cavity, and the sensing element is embedded in the containing cavity;

the accommodating cavity comprises a first accommodating cavity and a second accommodating cavity which are communicated, the base is provided with a body and an extension part, the top of the body is provided with an opening, and the first accommodating cavity which is communicated with the opening is arranged in the body;

the extension part extends outwards from the bottom of the body, the second accommodating cavity is formed in the extension part, and the sensing element is embedded in the second accommodating cavity.

2. The sensor of claim 1, wherein the base further comprises a connection cover detachably connected to the opening for opening or closing the opening.

3. The sensor of any one of claims 1-2, wherein the connector comprises an electrical connection and a housing external to the electrical connection, the electrical connection being connected to the transmission;

the sensor further comprises a sheath, wherein the sheath is covered outside the transmission part and is connected between the base and the shell.

4. A quick-change bracket assembly comprising a quick-change bracket and a battery pack, the battery pack being mounted on an inner side wall of the quick-change bracket, wherein the quick-change bracket assembly further comprises the sensor of any one of claims 1-3, the base being detachably connected to the quick-change bracket;

the battery pack is provided with an induction object element for being induced by the induction element.

5. The quick-change bracket assembly of claim 4, wherein the inductive object element is a magnetic steel.

6. The quick-change bracket assembly of claim 4 wherein the base is located on an outer sidewall of the quick-change bracket.

7. The quick-change bracket assembly of claim 6, further comprising a locking mechanism for locking and securing the battery pack, the locking mechanism being disposed on an inner side wall of the quick-change bracket;

The nut is preset at the position corresponding to the locking mechanism in the outer side wall of the quick-change bracket, a mounting hole is formed in the base, and the base is arranged in the mounting hole in a penetrating mode through a fastener and is in threaded connection with the nut to achieve connection with the quick-change bracket.

8. The quick-change bracket assembly of claim 7, further comprising an external wire harness connected to the connector and secured to an outer edge of the quick-change bracket.

9. The quick change bracket assembly of claim 7 wherein the quick change bracket has a body mounting plate and a mounting plate battery pack securing plate, the battery pack securing plate for mounting and securing the battery pack, the mounting plate body mounting plate for connecting to a chassis of an electric vehicle;

The vehicle body mounting plate comprises a first mounting plate and a first connecting plate, the first mounting plate is used for being connected and mounted on the chassis, the battery pack fixing plate comprises a second mounting plate and a second connecting plate, the locking mechanism is arranged on one side, facing the battery pack, of the second mounting plate, one end of the second connecting plate is connected with the top end of the second mounting plate, the first connecting plate is connected between the other end of the second connecting plate and the first mounting plate, and the vertical distance between the first mounting plate and the bottom end of the second mounting plate is smaller than the vertical height of the second mounting plate;

The base is arranged on one side, away from the battery pack, of the second mounting plate.

10. The quick-change bracket assembly of claim 9, further comprising an external harness connected to the connector;

The outer edge interval of first mounting panel is provided with a plurality of fixed parts, outside pencil is through a plurality of fixed part set firmly in the outward flange of quick change support.

11. The quick-change bracket assembly of claim 10, wherein the fixing portion is provided with a fixing hole, the quick-change bracket assembly further comprises a plurality of fixing clips, each fixing clip comprises a first fixing portion and a second fixing portion which are connected;

The first fixing part is provided with a containing hole for the external wire harness to pass through, and the second fixing part is arranged in the fixing hole in a penetrating mode and is fixed in the fixing hole.

12. The quick-change bracket assembly of claim 11, wherein the first securing portion comprises a two-piece structure interconnected, the first securing portion being switchable between an open state and a closed state;

when the split structure is in the open state, one ends of the two split structures are connected, and the other ends of the split structures are provided with accommodating ports for the external wire harnesses to pass through;

when the structure is in the closed state, two ends of the split structures are connected in one-to-one correspondence to form a closed annular structure.

13. The quick-change bracket assembly of claim 11, wherein the first fixed portion is switchable between an extended state and a flexed state;

wherein the first fixation portion is a linear structure when in the extended state;

When in the bending state, the first fixing part is bent to form an annular structure with the accommodating hole.

14. The quick-change bracket assembly of claim 11, wherein the retaining clip further comprises a stop portion connected between the first and second fixed portions, and wherein the stop portion is attached to the fixed portion.

15. An electric vehicle comprising a chassis, wherein the electric vehicle further comprises a quick-change bracket assembly according to any one of claims 4-14, the quick-change bracket being connected to the chassis.