Contactor for vehicle, vehicle charging and distribution system, charging pile and vehicle

Abstract

The present invention discloses a contactor for a vehicle, a vehicle charging and distribution system, a charging pile, and a vehicle. The contactor includes: a first terminal and a second terminal; a conductive bar, the conductive bar including: a first conductive segment and a second conductive segment, the first conductive segment and the second conductive segment being interconnected and capable of relative rotation, the first conductive segment being fixed to the first terminal, and the second conductive segment being selectively electrically connected to or disconnected from the second terminal; and a drive assembly, the drive assembly being used to drive the second conductive segment toward or away from the second terminal. The first terminal, the second terminal, and the conductive bar are arranged relative to each other in a first direction, the drive assembly and the conductive bar are arranged relative to each other in a second direction, and the first direction is orthogonal to the second direction. Thus, the space occupied by the contactor can be improved, the overall length of the contactor can be shortened, the overall structural strength of the contactor can be improved, the probability of contactor breakage can be reduced, and the service life of the contactor can be extended.

Description

Technical Field

[0001] The present invention relates to the technical field of contactors, and in particular to a contactor for a vehicle, a vehicle charging and distribution system, a charging pile, and a vehicle. Background Art

[0002] Contactors are widely used as control electrical components for controlling the on and off of circuits. In the technical solution involved in my country's patent invention publication number: CN112885651A, the contactor includes an electromagnetic mechanism, a reed assembly, a static contact, and a moving contact arranged in sequence in the length direction. That is, the moving contact, the conductive bar, and the drive assembly of the contactor in the prior art are arranged in sequence in the length direction of the contactor. The overall structure is long, occupies a large space, and has low structural strength. During use, there is a high risk of breakage due to vibration and the like, and the service life is short, making it impossible to use as an automotive-grade contactor. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a contactor with a more reasonable structure, reasonable space occupation, high structural stability and long service life.

[0004] The present invention further proposes a vehicle charging and distribution system using the contactor.

[0005] The present invention also provides a charging pile using the contactor.

[0006] The present invention also provides a vehicle using the contactor.

[0007] A contactor according to an embodiment of the first aspect of the present invention includes: a first terminal and a second terminal; a conductive bar, the conductive bar including: a first conductive segment and a second conductive segment, the first conductive segment and the second conductive segment being interconnected and rotatable relative to each other, the first conductive segment being fixed to the first terminal, and the second conductive segment being selectively electrically connected to or disconnected from the second terminal; and a drive assembly for driving the second conductive segment to move toward or away from the second terminal; wherein the first terminal and the second terminal are respectively arranged relative to the conductive bar in a first direction, and at least one of the conductive bar, the first terminal, and the second terminal is arranged relative to the drive assembly in a second direction.

[0008] According to the contactor of the embodiment of the present invention, by arranging the conductive bar, the first terminal, and the second terminal relative to each other in the first direction, and arranging the drive assembly and the conductive bar relative to each other in the second direction, the space occupied by the contactor can be improved, the overall length of the contactor can be shortened, the overall structural strength of the contactor can be improved, the probability of the contactor being easily broken in the middle when subjected to long-term vibration when used in a vehicle is reduced, and the service life of the contactor is extended.

[0009] According to some embodiments of the present invention, the drive component includes: a micro switch and a drive coil, the micro switch and the drive coil are arranged relative to each other in a first direction, the micro switch is suitable for swinging around a fixed axis under the action of the magnetic force of the drive coil, the micro switch is used to drive the second conductive section to move toward or away from the second terminal, the drive coil and the first terminal and the second terminal are arranged relative to each other in a second direction, and the micro switch and the conductive row are arranged relative to each other in the second direction.

[0010] Furthermore, the micro switch includes: a driving platform and a connecting frame, one end of the connecting frame is connected to the driving platform, and the other end of the connecting frame is connected to the second conductive section, the driving platform is suitable for swinging under the action of the magnetic force of the driving coil, and the driving platform is used to drive the connecting frame to swing, thereby driving the second conductive section to move toward or away from the second terminal.

[0011] Furthermore, a connection region between the first conductive segment and the second conductive segment is arranged opposite to the driving platform in the second direction.

[0012] In some embodiments, the other end of the connecting frame is connected to an end of the second conductive segment away from the first conductive segment, or the other end of the connecting frame is connected to the other end of the second conductive segment close to the first conductive segment.

[0013] Furthermore, the other end of the connecting frame is formed as a clamping portion, which clamps one end of the second conductive segment away from the first conductive segment; or the clamping portion clamps the other end of the second conductive segment close to the first conductive segment.

[0014] Furthermore, permanent magnets are respectively provided on the four corner areas of the driving platform, and magnetic conductive sheets are respectively provided at both ends of the driving coil. The magnetic conductive sheet at one end of the driving coil is suitable for attracting the two permanent magnets at one end of the driving platform, and the magnetic conductive sheet at the other end of the driving coil is suitable for attracting the two permanent magnets at the other end of the driving platform. The inner polarities of the two permanent magnets located at the same end of the driving platform are opposite.

[0015] Furthermore, a distance between the free end of the permanent magnet and the rotation center of the micro switch is smaller than a distance between a contact point between the second terminal and the second conductive section and the rotation center of the micro switch.

[0016] Furthermore, the drive assembly also includes a rotating shaft, the drive platform is connected to the rotating shaft and is suitable for rotating around the rotating shaft; the permanent magnet includes a first magnetic pole, a second magnetic pole, a third magnetic pole and a fourth magnetic pole, the first magnetic pole and the second magnetic pole are arranged at one end of the drive platform at intervals, and the inner side of the first magnetic pole is opposite to the inner side of the second magnetic pole, the third magnetic pole and the fourth magnetic pole are arranged at the other end of the drive platform at intervals, and the inner side of the third magnetic pole is opposite to the inner side of the second magnetic pole, the inner side of the first magnetic pole and the third magnetic pole have the same polarity and are arranged close to the drive coil, and the inner side of the second magnetic pole has the same polarity as the inner side of the fourth magnetic pole and is arranged away from the drive coil; the magnetic conductive sheet includes a first magnetic conductive sheet and a second magnetic conductive sheet, one end of the first magnetic conductive sheet is connected to one end of the drive coil, and the other end of the first magnetic conductive sheet is arranged between the first magnetic pole and the second magnetic pole, one end of the second magnetic conductive sheet is connected to the other end of the drive coil, and the other end of the second magnetic conductive sheet is arranged between the third magnetic pole and the fourth magnetic pole.

[0017] Furthermore, the driving platform is constructed as an insulating member or an insulating layer is coated on the driving platform.

[0018] According to some embodiments of the present invention, the conductive bar further includes: a flexible connecting portion, which connects the first conductive segment and the second conductive segment and is located between the first conductive segment and the second conductive segment, and the second conductive segment can swing relative to the flexible connecting portion to move toward or away from the second terminal.

[0019] Furthermore, the flexible connection portion includes an arcuate slot extending through the flexible connection portion along the height direction of the conductive bar. In some embodiments, the contactor further includes: a sensor disposed adjacent to the first terminal, the second terminal, or the conductive bar and configured to detect a circuit signal from the first terminal, the second terminal, or the conductive bar in real time; and a controller electrically connected to the sensor and configured to control the drive assembly to open or close the contactor based on the circuit signal.

[0020] Furthermore, the controller is used to obtain the temperature, voltage or current of the first terminal or the second terminal or the conductive bus according to the circuit signal; the controller is configured to disconnect the electrical connection between the second conductive segment and the second terminal when the temperature of the first terminal or the second terminal or the conductive bus is greater than a first temperature threshold; and / or the voltage is greater than a first voltage threshold; and / or the current is greater than a first current threshold.

[0021] Further, the controller is configured to close the electrical connection between the second conductive segment and the second terminal when the temperature of the first terminal or the second terminal or the conductive bar is less than a second temperature threshold; and / or the voltage is less than a second voltage threshold; and / or the current is less than a second current threshold, wherein the second temperature threshold is less than or equal to the first temperature threshold, the second voltage threshold is less than or equal to the first voltage threshold, and the second current threshold is less than or equal to the first current threshold.

[0022] According to some embodiments of the present invention, the present invention further includes: a shell, the shell defines an accommodating space, the conductive bar, the first terminal, the second terminal and the drive assembly are all arranged in the accommodating space, and at least part of the first terminal and the second terminal extends out of the shell.

[0023] Furthermore, a low-voltage signal terminal is provided outside the shell, and the low-voltage signal terminal is connected to the driving coil.

[0024] According to a second embodiment of the present invention, a vehicle charging and distribution system includes: a positive contactor, a negative contactor, and a pre-charging circuit contactor, wherein one or more of the positive contactor, the negative contactor, and the pre-charging circuit contactor are configured as the contactors described in the above embodiments.

[0025] A charging pile according to an embodiment of the third aspect of the present invention includes: the contactor described in the above embodiment.

[0026] A vehicle according to an embodiment of the fourth aspect of the present invention includes: the contactor described in the above embodiment.

[0027] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0029] Figure 1 is a schematic diagram of a contactor according to a first embodiment of the present invention;

[0030] Figure 2 is a perspective schematic diagram of a contactor in a first position according to a first embodiment of the present invention;

[0031] Figure 3 is a top view of a contactor in a first position according to a first embodiment of the present invention;

[0032] Figure 4 is a perspective schematic diagram of a contactor in a second position according to the first embodiment of the present invention;

[0033] Figure 5 is a top view of the contactor in the second position according to the first embodiment of the present invention;

[0034] Figure 6 is a state diagram of the driving assembly when the contactor is in the first position according to the first embodiment of the present invention;

[0035] Figure 7 is a state diagram of the driving assembly when the contactor according to the first embodiment of the present invention is in the second position;

[0036] Figure 8 is a schematic diagram of a contactor according to a second embodiment of the present invention;

[0037] Figure 9 is a schematic diagram of a drive assembly of a contactor according to a second embodiment of the present invention;

[0038] Figure 10 is a schematic cross-sectional view of a contactor according to an embodiment of the present invention;

[0039] Figure 11 is a schematic diagram of a vehicle charging and distribution system according to an embodiment of the present invention;

[0040] Figure 12 is a schematic diagram of a vehicle according to an embodiment of the present invention;

[0041] Figure 13 This is a schematic diagram of a working circuit of a sensor used in the present invention;

[0042] Figure 14 is a schematic diagram of a charging pile according to an embodiment of the present invention;

[0043] Figure 15 A micro switch according to a structure of an embodiment of the present invention;

[0044] Figure 16 This is another micro switch according to an embodiment of the present invention.

[0045] Reference numerals:

[0046] Vehicle 10000,

[0047] 1000 charging and distribution systems, 2000 charging piles,

[0048] Contactor 100, positive contactor 100a, negative contactor 100b, pre-charge circuit contactor 100c,

[0049] The first terminal 10, the second terminal 20,

[0050] Conductive bar 30, first conductive section 31, second conductive section 32, flexible connection portion 33, arc-shaped slot 331,

[0051] Driving assembly 40, driving coil 41, micro switch 42, driving platform 421, connecting frame 422, permanent magnet 423, first magnetic pole 4231, second magnetic pole 4232, third magnetic pole 4233, fourth magnetic pole 4234, clamping part 424,

[0052] Housing 50 , low-voltage signal terminal 60 , sensor 70 . DETAILED DESCRIPTION

[0053] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0054] Reference below Figures 1-16 A contactor 100 according to an embodiment of the present invention is described.

[0055] like Figure 2-Figure 5 、 Figure 8 As shown, the contactor 100 according to the embodiment of the present invention includes: a first terminal 10 and a second terminal 20 , a conductive bar 30 , and a driving assembly 40 .

[0056] The conductive bar 30 includes a first conductive segment 31 and a second conductive segment 32, which are interconnected and rotatable relative to each other. The first conductive segment 31 is fixed to the first terminal 10, and the second conductive segment 32 can be selectively electrically connected to or disconnected from the second terminal 20. The drive assembly 40 is used to drive the second conductive segment 32 toward or away from the second terminal 20. The first terminal 10 and the second terminal 20 are respectively arranged relative to the conductive bar 30 in a first direction. At least one of the conductive bar 30, the first terminal 20, and the first terminal 10 is arranged relative to the drive assembly 40 in a second direction, and the first direction is orthogonal to the second direction.

[0057] Specifically, the first terminal 10 and the second terminal 20 can be selectively electrically connected or disconnected through the conductive bar 30, and the driving component 40 is used to drive the conductive bar 30 to move between the first position and the second position to realize the conduction and disconnection of the first terminal 10 and the second terminal 20, that is, the first position corresponds to the position where the first terminal 10 and the second terminal 20 are conductive, and the second position corresponds to the position where the first terminal 10 and the second terminal 20 are disconnected.

[0058] It should be noted that the relative rotation of the first conductive segment 31 and the second conductive segment 32 means that they can be connected by a conductive rotating connection structure to achieve relative rotation. Alternatively, they can be connected by a flexible structural member (i.e., at least a portion of the conductive bar 30 is constructed as a flexible structure) and relative rotation can be achieved by bending the flexible structure. Alternatively, the conductive bar 30 can be constructed as an entire flexible member and relative rotation can be achieved by bending. With this structure, the conductive bar 30 is less subject to bending wear during the rotation of the second conductive segment 32, thereby extending the service life of the conductive bar 30 and thereby improving the service life of the contactor 100.

[0059] Furthermore, see Figure 2 and Figure 4 As shown, the conductive bar 30 is arranged opposite to the first terminal 10 and the second terminal 20 in a first direction, and the conductive bar 30 is arranged opposite to the driving component 40 in a second direction. For example, the first direction corresponds to the length direction or width direction on the horizontal plane, and the second direction corresponds to the height direction. The first terminal 10, the second terminal 20 and the conductive bar 30 are arranged at the same height, and the driving component 40 is located above or below the conductive bar 30, so as to reduce the size of the contactor 100 in the height direction.

[0060] According to the contactor 100 of the embodiment of the present invention, by arranging the conductive bar 30, the first terminal 10, and the second terminal 20 relative to each other in a first direction, and arranging the drive assembly 40 and the conductive bar 30 relative to each other in a second direction, the space occupied by the contactor 100 can be improved, the overall length of the contactor 100 can be shortened, and the overall structural strength of the contactor 100 can be improved. The probability of the contactor 100 being easily broken in the middle area when used in an environment subjected to long-term vibration, such as in a vehicle 10000, can be reduced, thereby extending the service life of the contactor 100.

[0061] In addition, through the above-mentioned arrangement, the contactor 100 can be layered and isolated from high and low voltages (the upper layer is the high-voltage conduction part and the lower layer is the low-voltage control part), so that the arc extinguishing method is no longer limited to the combination of inert gas and magnetic blowout arc extinguishing, and can also be achieved by overall infiltration of insulating liquid or without setting an arc extinguishing structure. Based on the diversity of arc extinguishing methods, there is no need to insulate the drive component 40 from the chamber, which can solve the low-voltage failure problem, and there is no need to inject inert gas, and there is no need to use ceramic and metal brazing technology to process the contactor 100. It can also simplify the processing technology of the contactor 100, reduce material processes, improve production efficiency, and reduce the processing cost of the contactor 100.

[0062] The first terminal 10 is fixed to the first conductive section 31, and the second terminal 20 is selectively electrically connected to the second conductive section 32. This can also reduce the number of moving contacts, reduce the high-voltage power consumption problem caused by the moving contacts, reduce the number of arcs, reduce adhesion points, and reduce the movement wear generated during the circuit control process of the contactor 100. In summary, it reduces risk points and power loss.

[0063] During operation of the contactor 100, the second conductive section 32 will impact the second terminal 20, generating operating noise. To reduce the operating noise of the contactor 100, the conductive bar 30 of the present invention can be constructed as a flexible member and can be made of a flexible metal material (for example, a soft copper composite material or a soft silver composite material) to reduce the impact noise and improve the user experience of the contactor 100. At the same time, the use of a flexible metal material can increase the current and reduce the contact resistance between the second terminal 20 and the conductive bar 30, thereby reducing the probability of adhesion between the two.

[0064] like Figure 6 and Figure 7 As shown, according to some embodiments of the present invention, the driving component 40 includes: a micro switch 42 and a driving coil 41. The micro switch 42 and the driving coil 41 are arranged relative to each other in a first direction. The micro switch 42 is suitable for swinging around a fixed axis under the action of the magnetic force of the driving coil 41. The micro switch is used to drive the second conductive section 32 toward or away from the second terminal 20 by the magnetic force. The driving coil 41 is arranged relative to the first terminal 10 and the second terminal 20 in the second direction. The micro switch 42 and the conductive bar 30 are arranged relative to each other in the second direction.

[0065] Specifically, the micro switch 42 and the drive coil 41 are arranged relative to each other in a first direction. The drive coil 41 generates a magnetic force that can drive the micro switch 42 to rotate around a fixed axis. The micro switch 42 is connected to the conductive bar 30 and is arranged relative to each other in a second direction to facilitate the movement of the conductive bar 30. The first terminal 10 and the second terminal 20 are both located above or below the drive coil 41, thereby facilitating the high and low voltage isolation between the low-voltage control part and the high-voltage conduction part.

[0066] like Figure 6-Figure 9 As shown, the micro switch 42 includes: a driving platform 421 and a connecting frame 422, one end of the connecting frame 422 is connected to the driving platform 421, and the other end of the connecting frame 422 is connected to the second conductive section 32, and the driving platform 421 is suitable for swinging under the action of the magnetic force of the driving coil 41. The driving platform 421 is used to drive the connecting frame 422 to swing, thereby driving the second conductive section 42 to move toward or away from the second terminal 20.

[0067] That is, the micro switch 42 is rotated around a fixed axis by cooperating with the driving platform 421 and the driving coil 41, and a connecting frame 422 is provided above the driving platform 421. The connecting frame 422 and the driving platform 421 are integrally formed or fixedly connected. The driving platform 421 can rotate synchronously with the connecting frame 422. The connecting frame 422 is connected to the second conductive section 32 to drive the second conductive section 32 to swing relative to the first conductive section 31, thereby improving the movement stability of the conductive bar 30.

[0068] Preferably, the connection area between the first conductive section 31 and the second conductive section 32 is arranged relative to the driving platform 421 in the second direction, so that the driving platform 421 and the first conductive section 32 swing with higher synchronization, which can improve the control accuracy, and the arrangement of the contactor 100 is more compact, which can improve the integration of the contactor 100.

[0069] In some embodiments, the connection area between the first conductive segment 31 and the second conductive segment 32 is arranged relative to the rotation center of the micro switch 42 in the second direction, that is, the swing center of the second conductive segment 32 is coaxial with the rotation center of the drive platform 421 (that is, the rotation center of the micro switch 42), further improving the motion synchronization, control accuracy, and structural integration of the two.

[0070] In some embodiments, the other end of the connecting frame 422 is connected to the end of the second conductive segment 22 away from the first conductive segment 21 , or the other end of the connecting frame 422 is connected to the other end of the second conductive segment 22 close to the first conductive segment 21 .

[0071] That is to say, in some embodiments, the connecting frame 422 drives the second conductive segment 22 to move toward or away from the second terminal 20 by connecting to the end of the second conductive segment 22 away from the first conductive segment 21. In other embodiments, the connecting frame 422 drives the second conductive segment 22 to move toward or away from the second terminal 20 by connecting to the end of the second conductive segment 22 close to the first conductive segment 21.

[0072] In some embodiments, the other end of the connecting frame 422 is formed as a clamping portion 424. Figure 6 and Figure 7 In the first embodiment shown, the clamping portion 424 clamps the end of the second conductive section 32 away from the first conductive section 31 to effectively amplify the stroke of the micro switch 42; or Figure 8 and Figure 9 In the second embodiment shown, the clamping portion 424 clamps the other end of the second conductive section 32, which is adjacent to the first conductive section 31. Compared to the first embodiment, the lengths of the connecting frame 422 at both ends can be shortened in the second embodiment, thereby reducing the size of the connecting frame 422 and facilitating a lightweight and compact design of the contactor 100.

[0073] like Figure 6 and Figure 7 As shown, permanent magnets 423 are provided on the four corner areas of the driving platform 421, and magnetic conductive sheets are provided at both ends of the driving coil 41. The magnetic conductive sheet at one end of the driving coil 41 is suitable for attracting the two permanent magnets at one end of the driving platform 421, and the magnetic conductive sheet at the other end of the driving coil 41 is suitable for attracting the two permanent magnets at the other end of the driving platform 421. The inner polarities of the two permanent magnets 423 located at the same end of the driving platform 421 are opposite.

[0074] It can be understood that after the driving coil 41 is energized, the polarities of the magnetic conductive sheets at both ends are different, and the polarities of the two permanent magnets 423 located at the same end of the driving coil 41 are different, so that one end of the driving platform 421 can move toward the driving coil 41, and the other end can move away from the driving coil 41.

[0075] Of course, the structure of the present invention is not limited to this. Two permanent magnets 423 can also be set at only one end of the driving platform 421, or one permanent magnet 423 can be set at each end, so that the permanent magnets 423 are located in the corner areas respectively, and the micro switch 42 can be driven to rotate under the action of polar attraction or polar repulsion.

[0076] In this way, by setting the permanent magnet 423, the working state of the contactor 100 can be maintained by the magnetic attraction of the permanent magnet 423, that is, it can stay in the first position or the second position, and the driving coil 41 of the low-voltage control part does not need to be continuously energized to reduce low-voltage loss and improve the energy consumption ratio of the contactor 100.

[0077] exist Figure 3 In the specific embodiment shown, the distance between the free end of the permanent magnet 423 and the rotation center of the micro switch 42 is smaller than the distance between the contact point of the second terminal 20 and the second conductive section 32 and the rotation center of the micro switch 42 .

[0078] That is, the distance between one end of the permanent magnet 423 and the rotation center of the microswitch 42 is L1; the distance between the contact point between the second terminal 20 and the second conductive segment 32 and the rotation center of the microswitch 42 is L2, where L1 < L2. This increases the travel of the second conductive segment 22 relative to the microswitch 33, thereby increasing the travel of the microswitch 42 to meet the electrical clearance requirements of the high-voltage circuit to which the contactor 100 is connected.

[0079] like Figure 9 、 Figure 15 and Figure 16 As shown, in a specific embodiment, the driving assembly 40 further includes a rotating shaft, and the driving platform 421 is connected to the rotating shaft and is suitable for rotating around the rotating shaft; the permanent magnet 423 includes a first magnetic pole 4231, a second magnetic pole 4232, a third magnetic pole 4233 and a fourth magnetic pole 4234, the first magnetic pole 4231 and the second magnetic pole 4232 have opposite polarities and are spaced apart at one end of the driving platform 421, and the inner side of the first magnetic pole 4231 and the inner side of the second magnetic pole 4232 have opposite polarity, the third magnetic pole 4233 and the fourth magnetic pole 4234 are spaced apart at the other end of the driving platform 421, and the inner side of the third magnetic pole 4233 is opposite to the inner side of the second magnetic pole 4232 The inner polarities of the poles 4232 are opposite, the inner polarities of the first magnetic pole 4231 and the third magnetic pole 4233 are the same and are arranged close to the drive coil 41, and the inner polarities of the second magnetic pole 4232 and the fourth magnetic pole 4234 are the same and are arranged away from the drive coil 41; the magnetic conductive sheet includes a first magnetic conductive sheet and a second magnetic conductive sheet, one end of the first magnetic conductive sheet is connected to one end of the drive coil 41, and the other end of the first magnetic conductive sheet is arranged between the first magnetic pole 4231 and the second magnetic pole 4232, one end of the second magnetic conductive sheet is connected to the other end of the drive coil 41, and the other end of the second magnetic conductive sheet is arranged between the third magnetic pole 4233 and the fourth magnetic pole 4234.

[0080] Exemplarily, the inner side of the first magnetic pole 4231 is the N pole, the inner side of the second magnetic pole 4232 is the S pole, the inner side of the third magnetic pole 4233 is the N pole, and the inner side of the fourth magnetic pole 4234 is the S pole. The first magnetic pole 4231 and the second magnetic pole 4232 are arranged at the same end of the driving platform 421, and the third magnetic pole 4233 and the fourth magnetic pole 4234 are arranged at the other end of the driving platform 421. When the driving coil 41 is energized in the first current direction, the first magnetic pole 4231 is magnetically attracted to the first magnetic conductive sheet, and the fourth magnetic pole 4234 is magnetically attracted to the second magnetic conductive sheet. When the driving coil is energized in the second current direction, the second magnetic pole 4232 is magnetically attracted to the first magnetic conductive sheet, and the third magnetic pole 4233 is magnetically attracted to the second magnetic conductive sheet. The first current direction is opposite to the second current direction.

[0081] It can be understood that the inner sides of the first magnetic pole 4231 and the third magnetic pole 4233 refer to the opposite sides of the first magnetic pole 4231 and the third magnetic pole 4233; the inner sides of the second magnetic pole 4232 and the fourth magnetic pole 4234 refer to the opposite sides of the second magnetic pole 4232 and the fourth magnetic pole 4234; Figure 15 In the embodiment shown, the permanent magnet 423 is constructed as a plate magnet with polarity as described above. Figure 16 In the embodiment shown, the permanent magnet 423 is configured as a U-shaped magnet with two magnetic poles at the open end, and the polarity is distributed as described above.

[0082] Furthermore, the driving platform 421 is constructed as an insulating member or coated with an insulating layer. Thus, the second conducting section 32 is disposed on the connecting frame 422. Accordingly, the driving platform 421 is constructed as an insulating member or coated with an insulating layer. This can improve the high-voltage and low-voltage isolation between the high-voltage conducting portion and the low-voltage control portion, prevent low-voltage failure caused by high-voltage breakdown, and improve the operating stability of the contactor 100.

[0083] like Figure 3 and Figure 5 As shown, according to some embodiments of the present invention, the conductive bar 30 further includes: a flexible connecting portion 33, the flexible connecting portion 33 connecting the first conductive segment 31 and the second conductive segment 32, and being located between the first conductive segment 31 and the second conductive segment 32, and the second conductive segment 32 can swing relative to the flexible connecting portion 33 to move toward or away from the second terminal 20.

[0084] Specifically, the two ends of the flexible connection portion 33 are connected to the first conductive section 31 and the second conductive section 32, respectively. The flexible connection portion 33 can be bent so that the second conductive section 32 can move toward or away from the second terminal 20, thereby improving the convenience of switching the contactor 100 between the first position and the second position. By providing the flexible connection portion 33, the bending wear of the conductive bar 30 can be reduced, thereby extending the service life of the conductive bar 30 and thereby improving the service life of the contactor 100.

[0085] Furthermore, an arcuate slot 331 is defined within the flexible connection portion 33, extending through the flexible connection portion 33 along the height of the conductive bar 30. This gap allows the arcuate slot 331 to deform and absorb some of the bending deformation during the bending process of the flexible connection portion 33, further reducing bending wear of the flexible connection portion 33 and effectively extending the service life of the conductive bar 30.

[0086] like Figure 10 As shown, in some embodiments, the contactor 100 further includes: a sensor 70, which is disposed adjacent to the first terminal 10 or the second terminal 20 or the conductive bar 30 and is used to detect the circuit signal of the first terminal 10 or the second terminal 20 or the conductive bar 30 in real time; and a controller, which is electrically connected to the sensor 70 and is adapted to control the drive assembly 40 to open or close the contactor 100 according to the circuit signal.

[0087] In this way, by providing a controller and a sensor 70, as the first terminal 10 and the second terminal 20 are connected through the conductive bar 30, the current and heat generation of the high-voltage circuit will change, and corresponding temperature changes will occur. The sensor 70 can obtain change information (temperature change, current change, etc.) during the operation of the high-voltage circuit and transmit it to the controller in the form of a circuit signal. The controller determines whether the cut-off threshold (temperature threshold, voltage threshold, current threshold) of the high-voltage circuit is reached based on the circuit signal, and when the high-voltage circuit needs to be disconnected, the controller controls the drive component 40 to disconnect the electrical connection between the second end 32 and the second terminal 20. Not only does it not need to provide a fuse to reduce high-voltage loss and reduce costs, but after the contactor 100 is controlled to be disconnected, if the electrical equipment using the contactor 100 of the present invention needs to continue to work, it can also ensure that the electrical equipment can be supplied with high voltage, which can improve safety.

[0088] Specifically, if Figure 13 As shown, the conversion principle between thermistor and its corresponding voltage is: V = (NTC / (NTC+R)) × VCC; where V is the input voltage, VCC is the standard voltage, R is the fixed resistor, and NTC is the thermistor; therefore, the calculation method of the circuit signal AD is: AD = (V / VCC) × 2 n =(NTC / (NTC+R))×2 n .

[0089] In this way, by obtaining the voltage value of the thermistor, the required circuit signal can be converted.

[0090] It should be pointed out that after the fuse blows, the high-voltage circuit is completely disconnected. However, the present invention sets a controller and a sensor 70. Even if the high-voltage electricity needs to be disconnected based on the information obtained by the sensor 70, the high-voltage electricity can still be turned on under extreme conditions to improve safety. For example, the contactor 100 of the present invention is applied to the electric vehicle 10000. When the circuit information indicates that the contactor 100 needs to be disconnected but the vehicle 10000 is in a dangerous situation and needs to maintain the working condition, the high-voltage electricity state can be maintained, and after driving to a safe position or after the dangerous situation is resolved, the electrical connection between the second end 32 and the second terminal 20 is disconnected.

[0091] Furthermore, the controller is used to obtain the temperature, voltage or current of the first terminal 10 or the second terminal 20 or the conductive bar 30 according to the circuit signal;

[0092] The controller is configured to disconnect the electrical connection between the second conductive section 32 and the second terminal 20 when the temperature of the first terminal 10 or the second terminal 20 or the conductive bar 30 is greater than a first temperature threshold; and / or the voltage is greater than a first voltage threshold; and / or the current is greater than a first current threshold.

[0093] The controller is further configured to close the electrical connection between the second conductive segment 32 and the second terminal 20 when the temperature of the first terminal 10 or the second terminal 20 or the conductive bar 30 is less than a second temperature threshold; and / or the voltage is less than a second voltage threshold; and / or the current is less than a second current threshold, wherein the second temperature threshold is less than or equal to the first temperature threshold, the second voltage threshold is less than or equal to the first voltage threshold, and the second current threshold is less than or equal to the first current threshold.

[0094] That is, the contactor 100 of the present invention, by providing a sensor and a controller, can disconnect the contactor 100 when the voltage of the high-voltage circuit to which the contactor 100 is connected exceeds a set first voltage threshold, the current exceeds a set first current threshold, or the temperature exceeds a set first temperature threshold, thereby improving the safety of the contactor 100, reducing the safety hazards of the high-voltage circuit, and preventing the contactor 100 from burning out.

[0095] Furthermore, when the voltage of the high-voltage circuit to which the contactor 100 is connected drops below a set second voltage threshold, the current drops below a set first current threshold, or the temperature drops below a set first temperature threshold, the contactor 100 can be controlled to close again so that the high-voltage circuit to which the contactor 100 is connected can be switched to a working state in a timely manner, which can effectively improve safety of use and reduce property losses.

[0096] like Figure 1As shown, according to some embodiments of the present invention, the device further includes a housing 50, which defines a housing space. The conductive bar 30, the first terminal 10, the second terminal 20, and the drive assembly 40 are all disposed within the housing space, with at least portions of the first terminal 10 and the second terminal 20 extending out of the housing 50. Thus, the housing 50 can isolate the drive assembly 40 from the outside world, improving operational stability while reducing interference from the outside environment on the drive coil 41 and the micro switch 42, thereby improving the control response efficiency of the low-voltage control unit.

[0097] Furthermore, a low-voltage signal terminal 60 is provided on the outside of the housing 50. The low-voltage signal terminal 60 is pluggable and arranged on the housing 50 and connected to the drive coil 41. In some embodiments, the housing 50 is provided with a wiring harness outlet, through which the low-voltage signal terminal 60 is led out of the housing. In other embodiments, the low-voltage signal terminal 60 is fixed to the housing 50 by plugging, and a corresponding plug interface is provided on the housing 50. The plug interface introduces a metal wire into the housing 50 to electrically connect to the drive coil 41. This makes the appearance of the contactor 100 of the present invention consistent with that of the traditional contactor 100, facilitates structural design and material switching, and can reduce the R&D cycle and development costs.

[0098] like Figure 11 As shown, according to the vehicle charging and distribution system 1000 of the second embodiment of the present invention, the positive contactor 100a, the negative contactor 100b and the pre-charging circuit contactor 100c, one or more of the positive contactor 100a, the negative contactor 100b and the pre-charging circuit contactor 100c are constructed as the contactor 100 in the above embodiment.

[0099] Specifically, the vehicle charging and distribution system 1000 includes: a battery end interface, an electronic control end interface and a DC charging interface. A charging circuit is formed between the DC charging interface and the battery end interface, and a distribution circuit is formed between the electronic control end interface and the battery end interface, which are used to provide power for the entire vehicle. A positive contactor 100a is provided on the positive side of the DC charging interface and the positive side of the battery end interface, and a negative contactor 100b is provided on the negative side of the DC charging interface and the negative side of the battery end interface. A pre-charging circuit is also provided on the positive side of the battery end interface. A pre-charging circuit contactor 100c is provided in series with a pre-charging resistor and in parallel with the positive contactor 100a.

[0100] According to the vehicle charging and distribution system 1000 of the embodiment of the present invention, the contactor 100 described above is used to extend the working stability and use safety of the vehicle charging and distribution system 1000 and extend its service life.

[0101] like Figure 14As shown, the charging pile 2000 according to the third embodiment of the present invention adopts the contactor 100 in the above embodiment.

[0102] The charging pile 2000 according to the embodiment of the present invention uses the contactor 100 in the above embodiment, which can improve the safety of the charging pile 2000.

[0103] like Figure 12 As shown, a vehicle 10000 according to an embodiment of the third aspect of the present invention adopts the contactor 100 in the above embodiment.

[0104] According to the vehicle 10000 of the embodiment of the present invention, the contactor 100 of the above embodiment is used. The on-board electrical equipment is electrically connected and controlled through the contactor 100, which can improve the safety of the vehicle 10000.

[0105] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0106] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0107] In the description of the present invention, "plurality" means two or more.

[0108] In the description of the present invention, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features not being in direct contact with each other but being in contact with each other via another feature therebetween.

[0109] In the description of the present invention, “on”, “above” and “above” a first feature of a second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0110] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0111] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A contactor for a vehicle, characterized in that: include: a first terminal and a second terminal; a conductive bar, the conductive bar comprising a first conductive segment and a second conductive segment, the first conductive segment and the second conductive segment being connected to each other and rotatable relative to each other, the first conductive segment being fixed to the first terminal, and the second conductive segment being selectively electrically connected to or disconnected from the second terminal; a driving component, the driving component being used to drive the second conductive section to move toward or away from the second terminal; The first terminal and the second terminal are respectively arranged opposite to the conductive bar in a first direction, and at least one of the conductive bar, the first terminal and the second terminal is arranged opposite to the driving component in a second direction, and the first direction is orthogonal to the second direction; The conductive bar further includes: a flexible connection portion, the flexible connection portion connecting the first conductive segment and the second conductive segment and located between the first conductive segment and the second conductive segment, the second conductive segment being able to swing relative to the flexible connection portion to move toward or away from the second terminal; An arc-shaped groove is provided in the flexible connection portion, and the arc-shaped groove passes through the flexible connection portion along the height direction of the conductive bar.

2. The contactor for a vehicle according to claim 1, characterized in that The drive assembly includes: a micro switch and a drive coil, the micro switch and the drive coil are arranged relative to each other in a first direction, the micro switch is suitable for swinging around a fixed axis under the action of the magnetic force of the drive coil, and the micro switch is used to drive the second conductive section to move toward or away from the second terminal. The drive coil and the first terminal and the second terminal are arranged relative to each other in a second direction, and the micro switch and the conductive bar are arranged relative to each other in the second direction.

3. The contactor for a vehicle according to claim 2, characterized in that The micro switch includes: a driving platform and a connecting frame, one end of the connecting frame is connected to the driving platform, and the other end of the connecting frame is connected to the second conductive segment, the driving platform is suitable for swinging under the action of the magnetic force of the driving coil, and the driving platform is used to drive the connecting frame to swing, thereby driving the second conductive segment to move toward or away from the second terminal.

4. The contactor for a vehicle according to claim 3, characterized in that A connection region between the first conductive segment and the second conductive segment is disposed opposite to the driving platform in the second direction.

5. The contactor for a vehicle according to claim 4, characterized in that The other end of the connecting frame is connected to the end of the second conductive segment away from the first conductive segment, or the other end of the connecting frame is connected to the other end of the second conductive segment close to the first conductive segment.

6. The contactor for a vehicle according to claim 4, characterized in that The other end of the connecting frame is formed as a clamping portion, which clamps one end of the second conductive segment away from the first conductive segment; or the clamping portion clamps the other end of the second conductive segment close to the first conductive segment.

7. The contactor for a vehicle according to claim 4, characterized in that Permanent magnets are respectively provided on the four corner areas of the driving platform, and magnetic conductive sheets are respectively provided at both ends of the driving coil. The magnetic conductive sheet at one end of the driving coil is suitable for being attracted to the two permanent magnets at one end of the driving platform, and the magnetic conductive sheet at the other end of the driving coil is suitable for being attracted to the two permanent magnets at the other end of the driving platform. The inner polarities of the two permanent magnets located at the same end of the driving platform are opposite.

8. The contactor for a vehicle according to claim 7, characterized in that The distance between the free end of the permanent magnet and the rotation center of the micro switch is smaller than the distance between the contact point between the second terminal and the second conductive section and the rotation center of the micro switch.

9. The contactor for a vehicle according to claim 7, characterized in that The driving assembly further includes a rotating shaft, the driving platform being connected to the rotating shaft and adapted to rotate about the rotating shaft; The permanent magnet includes a first magnetic pole, a second magnetic pole, a third magnetic pole and a fourth magnetic pole, the first magnetic pole and the second magnetic pole are arranged at one end of the driving platform at intervals, and the inner side of the first magnetic pole is opposite in polarity to the inner side of the second magnetic pole, the third magnetic pole and the fourth magnetic pole are arranged at the other end of the driving platform at intervals, and the inner side of the third magnetic pole is opposite in polarity to the inner side of the second magnetic pole, the inner side of the first magnetic pole has the same polarity as the inner side of the third magnetic pole and is arranged close to the driving coil, and the inner side of the second magnetic pole has the same polarity as the inner side of the fourth magnetic pole and is arranged away from the driving coil; The magnetic conductive sheet includes a first magnetic conductive sheet and a second magnetic conductive sheet, one end of the first magnetic conductive sheet is connected to one end of the driving coil, and the other end of the first magnetic conductive sheet is arranged between the first magnetic pole and the second magnetic pole, one end of the second magnetic conductive sheet is connected to the other end of the driving coil, and the other end of the second magnetic conductive sheet is arranged between the third magnetic pole and the fourth magnetic pole.

10. The contactor for a vehicle according to claim 7, characterized in that The driving platform is configured as an insulating member or is coated with an insulating layer.

11. The contactor for a vehicle according to claim 1, characterized in that Also includes: a sensor, the sensor being disposed adjacent to the first terminal, the second terminal, or the conductive bar and configured to detect a circuit signal of the first terminal, the second terminal, or the conductive bar in real time; A controller is electrically connected to the sensor and is adapted to control the driving component to open or close the electrical connection between the second conducting section and the second terminal according to the circuit signal.

12. The contactor for a vehicle according to claim 11, characterized in that The controller is used to obtain the temperature, voltage or current of the first terminal or the second terminal or the conductive bar according to the circuit signal; The controller is configured to disconnect the electrical connection between the second conductive segment and the second terminal when the temperature of the first terminal, the second terminal, or the conductive bar is greater than a first temperature threshold; and / or the voltage is greater than a first voltage threshold; and / or the current is greater than a first current threshold.

13. The contactor for a vehicle according to claim 12, characterized in that The controller is configured to close the electrical connection between the second conductive segment and the second terminal when the temperature of the first terminal, the second terminal, or the conductive bar is less than a second temperature threshold; and / or the voltage is less than a second voltage threshold; and / or the current is less than a second current threshold, wherein the second temperature threshold is less than or equal to the first temperature threshold, the second voltage threshold is less than or equal to the first voltage threshold, and the second current threshold is less than or equal to the first current threshold.

14. The contactor for a vehicle according to claim 1, characterized in that Also includes: The housing defines an accommodating space, the conductive bar, the first terminal, the second terminal and the driving assembly are all arranged in the accommodating space, and at least part of the first terminal and the second terminal extends out of the housing.

15. The contactor for a vehicle according to claim 14, characterized in that A low-voltage signal terminal is further provided outside the shell, and the low-voltage signal terminal is connected to the driving coil.

16. A vehicle charging and distribution system, characterized in that: include: A positive contactor, a negative contactor, and a pre-charging circuit contactor, wherein one or more of the positive contactor, the negative contactor, and the pre-charging circuit contactor is configured as the contactor according to any one of claims 1 to 15.

17. A charging pile, characterized in that: include: The contactor according to any one of claims 1 to 15.

18. A vehicle, characterized in that: include: The contactor according to any one of claims 1 to 15.

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