Vehicle contactor, vehicle charging and power distribution system, charging stand, and vehicle

Abstract

A vehicle contactor (100), a vehicle charging power distribution system, a charging station, and a vehicle are disclosed. The contactor (100) includes a first connection terminal (10), a second connection terminal (20), a conductive bus bar (30), and a drive assembly (40), in which a first conductive section (31) and a second conductive section (32) of the conductive bus bar (30) are connected to each other and can rotate relative to each other, and the drive assembly (40) moves the second conductive section (32) toward or away from the second connection terminal (20), in which the first connection terminal (10) and the second connection terminal (20) are disposed opposite the conductive bus bar (30) in a first direction, and the drive assembly (40) is disposed opposite the conductive bus bar (30) in a second direction, the first direction being perpendicular to the second direction, so that the contactor (100) has a reasonable occupied space, high structural stability, and long service life.

Description

Technical Field

[0001] (Cross - reference to related applications) This application claims priority to Chinese Patent Application No. 2021110328563, titled "Vehicle Contact, Vehicle Charging and Power Distribution System, Charging Stand, and Vehicle", filed on September 3, 2021, and all of its contents are incorporated herein by reference.

[0002] This application relates to the technical field of contacts, and particularly to vehicle contacts, vehicle charging and power distribution systems, charging stands, and vehicles.

Background Art

[0003] Contacts are widely applied as electrical control components for controlling the opening and closing of circuits. Contacts in related technologies include an electromagnetic mechanism, a lead assembly, a fixed contact, and a movable contact arranged in sequence in the length direction. That is, the movable contact, conductive busbar, drive assembly, etc. of conventional contacts are arranged in sequence in the length direction of the contact. The overall structure is long, the occupied space is large, and the structural strength is low. During the use process, there is a high risk of breaking under the influence of vibration, etc., and the service life is short, so it cannot be used as an in - vehicle contact.

Summary of the Invention

Problems to be Solved by the Invention

[0004] This application aims to solve at least one of the technical problems in the prior art. For this reason, the objective of this application is to provide a contact with a more reasonable structure, a reasonable occupied space, high structural stability, and a long service life.

Means for Solving the Problems

[0005] This application further provides a vehicle charging and power distribution system using the above - mentioned contact.

[0006] This application further provides a charging stand using the above-mentioned contactor.

[0007] This application further provides a vehicle using the above-mentioned contactor.

[0008] The contactor according to an embodiment of the first aspect of the present application includes a first connection terminal, a second connection terminal, a conductive bus bar, and a drive assembly. The conductive bus bar includes a first conduction section and a second conduction section. The first conduction section and the second conduction section are connected to each other and are relatively rotatable. The first conduction section is fixed to the first connection terminal, and the second conduction section is selectively electrically connected to or electrically disconnected from the second connection terminal. The drive assembly moves the second conduction section toward or away from the second connection terminal. The first connection terminal and the second connection terminal are respectively installed opposite to the conductive bus bar in a first direction, and at least one of the conductive bus bar, the first connection terminal, and the second connection terminal is installed opposite to the drive assembly in a second direction.

[0009] In the contactor according to an embodiment of the present application, by installing the conductive bus bar, the first connection terminal, and the second connection terminal opposite to each other in a first direction, and installing the drive assembly and the conductive bus bar opposite to each other in a second direction, the occupied space of the contactor can be improved, the overall length of the contactor can be made shorter, the overall structural strength of the contactor can be improved, the probability that the contactor is used in a vehicle and breaks from the middle part due to long-term vibration can be reduced, and the service life of the contactor can be extended.

[0010] The charging and power distribution system of the vehicle according to the present application includes a positive contactor, a negative contactor, and a pre-charge circuit contactor. One or more of the positive contactor, the negative contactor, and the pre-charge circuit contactor are configured as the contactor according to any one of the above examples.

[0011] The charging stand according to the present application includes the above-mentioned contactor.

[0012] The vehicle according to the present application includes the above-mentioned contactor.

Advantages of the Invention

[0013] Some of the additional aspects and advantages of the present application are shown in the following description, some will become apparent in the following description, or will be understood by implementing the present application.

Brief Description of the Drawings

[0014]

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Figure 16

Mode for Carrying Out the Invention

[0015] Hereinafter, embodiments of the present application will be described in detail. Examples of the above embodiments are shown in the drawings, and the same or similar reference numerals throughout indicate the same or similar components, or components having the same or similar functions. Hereinafter, the embodiments described with reference to the drawings are exemplary only and are merely for interpreting the present application and should not be understood as limiting the present application.

[0016] Hereinafter, the contact 100 according to the embodiment of the present application will be described with reference to FIGS. 1 to 16.

[0017] As shown in FIGS. 2 to 5 and 8, the contact 100 according to the embodiment of the present application includes a first connection terminal 10, a second connection terminal 20, a conductive bus bar 30, and a drive assembly 40.

[0018] The conductive bus bar 30 includes a first conduction section 31 and a second conduction section 32. The first conduction section 31 and the second conduction section 32 are connected to each other and are relatively rotatable. The first conduction section 31 is fixed to the first connection terminal 10, and the second conduction section 32 is selectively electrically connected to or electrically disconnected from the second connection terminal 20. The drive assembly 40 moves the second conduction section 32 to move toward or away from the second connection terminal 20. The first connection terminal 10 and the second connection terminal 20 are respectively installed opposite to the conductive bus bar 30 in the first direction. The conductive bus bar 30, Second connection terminal 20At least one of the first connection terminal 10 is installed facing the drive assembly 40 in the second direction, and the first direction is perpendicular to the second direction.

[0019] The first connection terminal 10 and the second connection terminal 20 are selectively electrically connected or electrically disconnected via the conductive bus bar 30. The drive assembly 40 moves the conductive bus bar 30 between a first position and a second position to achieve conduction and disconnection between the first connection terminal 10 and the second connection terminal 20. That is, the first position corresponds to a position where the first connection terminal 10 and the second connection terminal 20 are conducted, and the second position corresponds to a position where the first connection terminal 10 and the second connection terminal 20 are disconnected.

[0020] It should be noted that the relative rotatability of the first conduction section 31 and the second conduction section 32 means that they are connected via a rotatable connection structure capable of conduction and can rotate relative to each other. They are connected via a flexible structure member (that is, at least a part of the conductive bus bar 30 is configured as a flexible structure), and can also rotate relative to each other by bending the flexible structure. The entire conductive bus bar 30 is configured as a flexible member and can also rotate relative to each other by bending. By using the above structure, during the rotation process of the second conduction section 32, the bending wear of the conductive bus bar 30 is smaller, the service life of the conductive bus bar 30 can be extended, and the service life of the contact 100 can be extended.

[0021] Furthermore, as shown in FIGS. 2 and 4, the conductive bus bar 30 is installed facing the first connection terminal 10 and the second connection terminal 20 in the first direction and facing the drive assembly 40 in the second direction. For example, if the first direction corresponds to the length direction or the width direction on the horizontal plane and the second direction corresponds to the height direction, the first connection terminal 10, the second connection terminal 20, and the conductive bus bar 30 are installed at the same height, and the drive assembly 40 is located above or below the conductive bus bar 30, thereby reducing the dimensional size of the contact 100 in the height direction.

[0022] In the contactor 100 according to the embodiment of the present application, the conductive bus bar 30, the first connection terminal 10, and the second connection terminal 20 are installed to face each other in the first direction, and the drive assembly 40 and the conductive bus bar 30 are installed to face each other in the second direction. By doing so, the occupied space of the contactor 100 can be improved, the overall length of the contactor 100 can be made shorter, the structural strength of the entire contactor 100 can be improved, and in an environment where the vehicle 10000 and the like are subjected to long-term vibration, the probability that the contactor 100 breaks from the intermediate region can be reduced, and the service life of the contactor 100 can be extended.

[0023] Also, by installing as described above, hierarchical installation of the contactor 100 can be realized, and high and low voltage separation (the upper layer is the high voltage conduction part and the lower layer is the low voltage control part) can be realized. The arc extinguishing method is not limited to the combination of inert gas and magnetic blowout, and arc extinguishing can be realized by the method of immersing the whole in insulating liquid or the arc extinguishing structure can be omitted. Due to the diversity of the arc extinguishing method, it is not necessary to insulatively separate the drive assembly 40 and the cavity, the problem of low voltage faults can be solved, there is no need to inject inert gas, and there is no need to process the contactor 100 using the soldering process of ceramic and metal. The processing process of the contactor 100 can be simplified, the material process can be reduced, the manufacturing efficiency can be improved, and the processing cost of the contactor 100 can be reduced.

[0024] The first connection terminal 10 and the first conduction section 31 are fixed, and the second connection terminal 20 and the second conduction section 32 are selectively electrically connected, so that the number of movable contacts can be reduced, the problem of high voltage power consumption caused by the movable contacts can be reduced, the number of arcs can be reduced, the number of adhesion points can be reduced, the operating wear of the contactor 100 occurring during circuit control can also be reduced, and the risk points and power losses can be reduced collectively.

[0025] In the process of the operation of the contactor 100, the second conduction section 32 collides with the second connection terminal 20 to generate operation noise. In order to reduce the operation noise of the contactor 100, the conductive bus bar 30 of the present application may be configured as a flexible member. In order to reduce the collision noise and improve the user experience of the contactor 100, a flexible metal material (for example, a soft copper composite material, a soft silver composite material) may be used. Also, by using the flexible metal material, the current can be increased, the contact resistance between the second connection terminal 20 and the conductive bus bar 30 can be reduced, and the probability of their adhesion can also be reduced.

[0026] As shown in FIGS. 6 and 7, in some embodiments of the present application, the drive assembly 40 includes a microswitch 42 and a drive coil 41. The microswitch 42 and the drive coil 41 are installed opposite to each other in the first direction. The microswitch 42 is suitable for swinging around a fixed axis under the action of the magnetic force of the drive coil 41, and moves the second conduction section 32 towards or away from the second connection terminal 20 by the magnetic force. The drive coil 41 is installed opposite to the first connection terminal 10 and the second connection terminal 20 in the second direction. The microswitch 42 and the conductive bus bar 30 are installed opposite to each other in the second direction.

[0027] The microswitch 42 and the drive coil 41 are installed opposite to each other in the first direction. The drive coil 41 can move the microswitch 42 and rotate it around a fixed axis by generating a magnetic force. The microswitch 42 is connected to the conductive bus bar 30 and installed opposite to the conductive bus bar 30 in the second direction to facilitate moving the conductive bus bar 30. Since both the first connection terminal 10 and the second connection terminal 20 are located above or below the drive coil 41, it is easy to separate the high and low voltages of the low-voltage control part and the high-voltage conduction part.

[0028] As shown in FIGS. 6 to 9, the microswitch 42 includes a driving base 421 and a connection bracket 422. One end of the connection bracket 422 is connected to the driving base 421, and the other end is connected to the second conduction section 32. Drive base 421 It is suitable for swinging under the action of the magnetic force of the driving coil 41, and swings by moving the connection bracket 422, Second conduction section 32 moves it to move toward or away from the second connection terminal 20.

[0029] That is, the cooperation between the driving base 421 and the driving coil 41 realizes the rotation around the fixed axis of the microswitch 42. The connection bracket 422 is installed above the driving base 421, and the connection bracket 422 and the driving base 421 are integrally formed or fixed and connected. Thereby, the driving base 421 can rotate synchronously with the connection bracket 422. The connection bracket 422 is connected to the second conduction section 32, and moves the second conduction section 32 to swing relative to the first conduction section 31, thereby improving the stability of the movement of the conductive bus bar 30.

[0030] In some embodiments, by installing the connection region between the first conduction section 31 and the second conduction section 32 opposite to the driving base 421 in the second direction, the swing of the driving base 421 and Second conduction section 32 the swing have higher synchronism, the control accuracy can be improved, the arrangement of the contact 100 becomes more compact, and the integration degree of the contact 100 can be improved.

[0031] In some embodiments, the connection region between the first conduction section 31 and the second conduction section 32 is installed opposite to the rotation center of the microswitch 42 in the second direction. That is, the swing center of the second conduction section 32 is coaxial with the rotation center of the driving base 421 (i.e., the rotation center of the microswitch 42), thereby further improving the synchronism, control accuracy, and structural integration degree of the movements of both.

[0032] In some embodiments, the other end of the connection bracket 422 is Second conduction section 32 of First conduction section 31is connected to the end away from Second conduction section 32 or is connected to the end close to the first conduction section 21 of

[0033] That is, in some embodiments, the connection bracket 422 Second conduction section 32 of First conduction section 31 is connected to the end away from, so as to Second conduction section 32 move and move towards or away from the second connection terminal 20. In some other embodiments, the connection bracket 422 Second conduction section 32 of First conduction section 31 is connected to the end close to, so as to Second conduction section 32 move and move towards or away from the second connection terminal 20.

[0034] In some embodiments, the other end of the connection bracket 422 is formed as a clamping portion 424. In the first embodiment shown in FIGS. 6 and 7, the clamping portion 424 clamps the end away from the first conduction section 31 of the second conduction section 32, effectively expanding the stroke of the microswitch 42. Or, in the second embodiment shown in FIGS. 8 and 9, the clamping portion 424 clamps the other end close to the first conduction section 31 of the second conduction section 32. For the first embodiment, in the second embodiment, in order to make the volume of the connection bracket 422 smaller, the lengths of both ends of the connection bracket 422 may be made shorter, which is advantageous for reducing the weight and making the contactor 100 more compact.

[0035] As shown in FIGS. 6 and 7, permanent magnets 423 are installed in all four corner regions of the driving base 421. The driving coil 41 has magnetic conductive pieces installed at both ends. One magnetic conductive piece is suitable for attracting two permanent magnets at one end of the driving base 421, and the other magnetic conductive piece is suitable for attracting two permanent magnets at the other end of the driving base 421. The two permanent magnets 423 located at the same end of the driving base 421 have opposite inner polarities.

[0036] As can be understood, after energizing the drive coil 41, the polarities of the magnetic conduction pieces at both ends are different. Accordingly, due to the different polarities of the two permanent magnets 423 located at the same end of the drive coil 41, one end of the drive base 421 can move toward the drive coil 41, and accordingly the other end can move away from the drive coil 41.

[0037] Naturally, the structure of the present application is not limited thereto. Two permanent magnets 423 may be installed only at one end of the drive base 421, or one permanent magnet 423 may be installed at each end so that the permanent magnets 423 are located corresponding to the corner regions. Thereby, under the action of the polarity attraction force or the polarity repulsive force, the microswitch 42 can be moved and rotated.

[0038] In this way, by installing the permanent magnet 423, it is possible to realize holding the operating state of the contactor 100, that is, holding it at the first position or the second position, by the magnetic attraction of the permanent magnet 423. It is not necessary to continuously energize the drive coil 41 of the low-voltage control part, thereby reducing the low-voltage loss and improving the energy consumption ratio of the contactor 100.

[0039] In the embodiment shown in FIG. 3, the distance between the free end of the permanent magnet 423 and the rotation center of the microswitch 42 is smaller than the distance between the contact point between the second connection terminal 20 and the second conduction section 32 and the rotation center of the microswitch 42.

[0040] That is, the distance from one end of the permanent magnet 423 to the rotation center of the microswitch 42 is L1, the distance between the contact point between the second connection terminal 20 and the second conduction section 32 and the rotation center of the microswitch 42 is L2, and L1 < L2. In this way, Second conduction section 32 By making the movement stroke of larger than the movement stroke of the microswitch 33, the stroke of the microswitch 42 can be enlarged to meet the spatial distance needs of the high-voltage circuit to which the contactor 100 is connected.

[0041] As shown in FIGS. 9, 15 and 16, in one embodiment, the drive assembly 40 further includes a rotating shaft. The drive base 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 installed at one end of the drive base 421 with a gap therebetween. The inner sides of the first magnetic pole 4231 and the second magnetic pole 4232 have opposite polarities. The third magnetic pole 4233 and the fourth magnetic pole 4234 are installed at the other end of the drive base 421 with a gap therebetween. The inner side of the third magnetic pole 4233 and Fourth pole 4234 the inner side of the fourth magnetic pole 4234 have opposite polarities. The first magnetic pole 4231 and the third magnetic pole 4233 have the same inner polarity and are installed close to the drive coil 41. The second magnetic pole 4232 and the fourth magnetic pole 4234 have the same inner polarity and are installed away from the drive coil 41. The magnetic conductive piece includes a first magnetic conductive piece and a second magnetic conductive piece. One end of the first magnetic conductive piece is connected to one end of the drive coil 41, and the other end is installed between the first magnetic pole 4231 and the second magnetic pole 4232. One end of the second magnetic conductive piece is connected to the other end of the drive coil 41, and the other end is installed between the third magnetic pole 4233 and the fourth magnetic pole 4234.

[0042] 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 drive base 421, and the third magnetic pole 4233 and the fourth magnetic pole 4234 are arranged at the other end of the drive base 421. When the drive coil 41 is energized along the first current direction, the first magnetic pole 4231 and the first magnetic conductive piece, and the third magnetic pole 4233 and the second magnetic conductive piece are magnetically attracted. When the drive coil is energized along the second current direction, the second magnetic pole 4232 and the first magnetic conductive piece, and the fourth magnetic pole 4234 and the second magnetic conductive piece are magnetically attracted. The first current direction and the second current direction have opposite current directions.

[0043] As can be understood, the inside of the first magnetic pole 4231 and the inside of the third magnetic pole 4233 refer to the opposite sides of the first magnetic pole 4231 and the third magnetic pole 4233, and the inside of the second magnetic pole 4232 and the inside of the fourth magnetic pole 4234 refer to the opposite sides of the second magnetic pole 4232 and the fourth magnetic pole 4234. In the embodiment shown in FIG. 15, the permanent magnet 423 is configured as a plate-shaped magnet, and the polarities are distributed as described above. In the embodiment shown in FIG. 16, the permanent magnet 423 is configured as a U-shaped magnet, and the open ends are two magnetic poles, and the polarities are distributed as described above.

[0044] The driving base 421 is configured as an insulating member, or an insulating layer is applied to the driving base 421. In this way, by installing the second conduction section 32 on the connection bracket 422 and accordingly making the driving base 421 an insulating member or applying an insulating layer to the driving base 421, the high-low voltage separation effect between the high-voltage conduction part and the low-voltage control part can be improved, low-voltage faults caused by high-voltage breakdown can be avoided, and the operating stability of the contactor 100 can be improved.

[0045] As shown in FIGS. 3 and 5, in some embodiments of the present application, the conductive bus bar 30 further includes a flexible connection part 33. The flexible connection part 33 is connected to the first conduction section 31 and the second conduction section 32, and is located between the first conduction section 31 and the second conduction section 32. The second conduction section 32 can swing relative to the flexible connection part 33 and move toward or away from the second connection terminal 20.

[0046] Both ends of the flexible connection part 33 are respectively connected to the first conduction section 31 and the second conduction section 32. The flexible connection part 33 can be bent so that the second conduction section 32 moves toward or away from the second connection terminal 20, thereby improving the convenience of switching between the first position and the second position of the contactor 100. By installing the flexible connection part 33, the bending wear of the conductive bus bar 30 can be reduced, the service life of the conductive bus bar 30 can be extended, and further the service life of the contactor 100 can be extended.

[0047] An arcuate groove 331 is provided in the flexible connection part 33, and the arcuate groove 331 penetrates the flexible connection part 33 along the height direction of the conductive bus bar 30. In this way, by providing a gap, in the bending process of the flexible connection part 33, the deformation of the arcuate groove 331 absorbs a certain amount of bending deformation, further reducing the bending wear of the flexible connection part 33, and effectively extending the service life of the conductive bus bar 30.

[0048] As shown in FIG. 10, in some embodiments, the contact 100 further includes a sensor 70 and a controller. The sensor 70 is installed close to the first connection terminal 10, the second connection terminal 20 or the conductive bus bar 30, and detects the circuit signals of the first connection terminal 10, the second connection terminal 20 or the conductive bus bar 30 in real time. The controller is electrically connected to the sensor 70 and is suitable for controlling the driving assembly 40 based on the circuit signals to disconnect or connect the contact 100.

[0049] In this way, by installing the controller and the sensor 70, when the first connection terminal 10 and the second connection terminal 20 are electrically connected through the conductive bus bar 30, both the current and the heat generation amount of the high-voltage circuit change, and accordingly, a temperature change occurs. The sensor 70 can obtain the change information (such as 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 disconnection threshold (temperature threshold, voltage threshold, current threshold) of the high-voltage circuit is reached based on the circuit signal. When it is necessary to disconnect the high-voltage circuit, the driving assembly 40 is controlled to Conductive bus bar 30 electrically disconnect the first connection terminal 10 from the second connection terminal 20, thereby reducing the high-voltage loss. Not only is it not necessary to install a fuse to reduce the cost, but also when the electrical equipment using the contact 100 of the present application needs to continue to operate after the contact 100 is controlled to be disconnected, it is ensured that the high-voltage power supply of the electrical equipment is turned on, and the safety can be improved.

[0050] As shown in FIG. 13, the conversion principle between the 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) × 2n = (NTC / (NTC + R)) × 2n.

[0051] In this way, if the voltage value of the thermistor is obtained, the necessary circuit signal can be converted.

[0052] Note that when the fuse blows, the high-voltage circuit is completely disconnected. However, in the present application, by installing the controller and the sensor 70, even if it is necessary to turn off the high-voltage power supply based on the information from the sensor 70, under extreme conditions, in order to improve safety, the high-voltage power supply can still be turned on. For example, when the contactor 100 of the present application is applied to the electric vehicle 10000, it indicates that the circuit information requires the contactor 100 to be disconnected. However, when the electric vehicle 10000 is in a dangerous situation and it is necessary to maintain the operating status, the high-voltage power supply is maintained in the on state. After driving to a safe position or after the dangerous situation is eliminated, Conductive bus bar 30 it can be electrically disconnected from the second connection terminal 20.

[0053] The controller obtains the temperature, voltage, or current of the first connection terminal 10, the second connection terminal 20, or the conductive bus bar 30 based on the circuit signal. The controller is arranged to electrically disconnect the second conduction section 32 from the second connection terminal 20 when the temperature of the first connection terminal 10, the second connection terminal 20, or the conductive bus bar 30 is greater than the first temperature threshold, and / or when the voltage is greater than the first voltage threshold, and / or when the current is greater than the first current threshold.

[0054] The controller is further arranged to electrically connect the second conduction section 32 and the second connection terminal 20 when the temperature of the first connection terminal 10, the second connection terminal 20 or the conductive bus bar 30 is lower than a second temperature threshold, and / or when the voltage is lower than a second voltage threshold, and / or when the current is lower than a second current threshold. The second temperature threshold is equal to or lower than the first temperature threshold, the second voltage threshold is equal to or lower than the first voltage threshold, and the second current threshold is equal to or lower than the first current threshold.

[0055] That is, in the contactor 100 of the present application, by installing the sensor and the controller, when the voltage of the high-voltage circuit to which the contactor 100 is connected exceeds a predetermined first voltage threshold, or the current exceeds a predetermined first current threshold, or the temperature exceeds a predetermined first temperature threshold, the contactor 100 can be disconnected, thereby improving the use safety of the contactor 100, reducing the safety risk of the high-voltage circuit, and avoiding the burnout of the contactor 100.

[0056] Furthermore, when the voltage of the high-voltage circuit to which the contactor 100 is connected drops below a predetermined second voltage threshold, or the current drops below a predetermined first current threshold, or the temperature drops below a predetermined first temperature threshold, the contactor 100 can be controlled to be reconnected, thereby timely switching the operating state of the high-voltage circuit to which the contactor 100 is connected, effectively improving the use safety, and preventing burnout.

[0057] As shown in FIG. 1, in some embodiments of the present application, it further includes a housing 50. The housing 50 defines an accommodation space, and the conductive bus bar 30, the first connection terminal 10, the second connection terminal 20 and the drive assembly 40 are all installed in the accommodation space. The first connection terminal 10 and the second connection terminal 20 at least partially extend from the housing 50. In this way, the installation of the housing 50 separates the drive assembly 40 from the outside, improves the operating stability, reduces the interference of the external environment on the drive coil 41 and the microswitch 42, and can improve the control response efficiency of the low-voltage control part.

[0058] A low-voltage signal terminal 60 is further installed outside the housing 50. The low-voltage signal terminal 60 is installed so as to be insertable into the housing 50 and is connected to the drive coil 41. In some embodiments, a wire harness outlet is installed in the housing 50, and the low-voltage signal terminal 60 is drawn out of the housing through the wire harness outlet. In some other embodiments, the low-voltage signal terminal 60 is inserted and fixed into the housing 50, an insertion port is correspondingly installed in the housing 50, a metal wire is introduced into the housing 50 from the insertion port and electrically connected to the drive coil 41. By making the appearance of the contactor 100 of the present application coincide with that of the conventional contactor 100, it is convenient for structural design and material switching, can shorten the research and development cycle, and can reduce the development cost.

[0059] As shown in FIG. 11, the vehicle charging and power distribution system 1000 according to the embodiment of the second aspect of the present application includes a positive contactor 100a, a negative contactor 100b, and a pre-charge circuit contactor 100c. One or more of the positive contactor 100a, the negative contactor 100b, and the pre-charge circuit contactor 100c are configured as the contactor 100 in the above embodiment.

[0060] The vehicle charging and power distribution system 1000 includes a battery terminal interface, an electric control terminal interface, and a DC charging interface. In order to supply electrical energy to the vehicle, a charging circuit is formed between the DC charging interface and the battery terminal interface, and a power distribution circuit is formed between the electric control terminal interface and the battery terminal interface. The positive contactor 100a is installed on both the positive electrode side of the DC charging interface and the positive electrode side of the battery terminal interface, the negative contactor 100b is installed on both the negative electrode side of the DC charging interface and the negative electrode side of the battery terminal interface. A pre-charge circuit is further installed on the positive electrode side of the battery terminal interface, and a pre-charge circuit contactor 100c connected in series with a pre-charge resistor and in parallel with the positive contactor 100a is installed in the pre-charge circuit.

[0061] By using the above-mentioned contact 100, the charging and power distribution system 1000 of the vehicle according to the embodiment of the present application can improve the operation stability and use safety of the charging and power distribution system 1000 of the vehicle, and can extend the service life.

[0062] As shown in FIG. 14, the charging stand 2000 according to the embodiment of the third aspect of the present application uses the contact 100 in the above embodiment.

[0063] By using the contact 100 in the above embodiment, the charging stand 2000 according to the embodiment of the present application can improve the use safety of the charging stand 2000.

[0064] As shown in FIG. 12, the vehicle 10000 according to the embodiment of the third aspect of the present application uses the contact 100 in the above embodiment.

[0065] The vehicle 10000 according to the embodiment of the present application uses the contact 100 in the above embodiment, and the in-vehicle electrical equipment performs electrical connection and control via the contact 100, so that the use safety of the vehicle 10000 can be improved.

[0066] In the description of this specification, phrases representing references such as "an embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" mean that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the exemplary descriptions of the above terms are not necessarily limited to the same embodiment or example. In addition, the described specific features, structures, materials or characteristics can be appropriately combined in any one or more embodiments or examples.

[0067] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, corrections, substitutions and modifications can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is limited by the claims and their equivalents.

Description of Symbols

[0068] 10000 Vehicles 1000 Charging and Power Distribution System 2000 Charging Stand 100 Contact 100a Positive Contact 100b Negative Contact 100c Pre - charge Circuit Contact 10 First Connection Terminal 20 Second Connection Terminal 30 Conductive Busbar 31 First Conductive Section 32 Second Conductive Section 33 Flexible Connection Part 331 Arc - shaped Groove 40 Driving Assembly 41 Driving Coil 42 Micro - switch 421 Driving Base 422 Connection Bracket 423 Permanent Magnet 4231 First Pole 4232 Second Pole 4233 Third Pole 4234 Fourth Pole 424 Clamping Part 50 Housing 60 Low - voltage Signal Terminal 70 Sensor

Claims

1. a first connection terminal (10), a second connection terminal (20), a conductive bus bar (30), and a drive assembly (40), comprising a vehicle contactor, wherein the conductive bus bar (30) includes a first conduction section (31) and a second conduction section (32), the first conduction section (31) and the second conduction section (32) are connected to each other and are relatively rotatable, the first conduction section (31) is fixed to the first connection terminal (10), and the second conduction section (32) can be selectively electrically connected to or electrically disconnected from the second connection terminal (20), the drive assembly (40) moves the second conduction section (32) to move towards or away from the second connection terminal (20), the first connection terminal (10) and the second connection terminal (20) are respectively installed facing the conductive bus bar (30) in a first direction, and at least one of the conductive bus bar (30), the first connection terminal (10), and the second connection terminal (20) is installed facing the drive assembly (40) in a second direction, and the first direction is perpendicular to the second direction, the drive assembly (40) includes a microswitch (42) and a drive coil (41), the microswitch (42) and the drive coil (41) are installed facing each other in a first direction, the microswitch (42) swings around a fixed axis under the action of the magnetic force of the drive coil (41) to move the second conduction section (32) to move towards or away from the second connection terminal (20), the drive coil (41) is installed facing the first connection terminal (10) and the second connection terminal (20) in a second direction, and the microswitch (42) and the conductive bus bar (30) are installed facing each other in a second direction, a vehicle contactor characterized by this.

2. The microswitch (42) includes a driving base (421) and a connection bracket (422). One end of the connection bracket (422) is connected to the driving base (421), and the other end of the connection bracket (422) is connected to the second conduction section (32). The driving base (421) can be swung under the action of the magnetic force of the driving coil (41). The driving base (421) drives the connection bracket (422) to swing, and the driving base (421) drives the second conduction section (32) to move towards or away from the second connection terminal (20). The vehicle contact according to claim 1, characterized in that.

3. The connection region between the first conduction section (31) and the second conduction section (32) is installed opposite to the driving base (421) in the second direction. The vehicle contact according to claim 2, characterized in that.

4. The other end of the connection bracket (422) is connected to the end of the second conduction section (32) away from the first conduction section (31), or the other end of the connection bracket (422) is connected to the end of the second conduction section (32) close to the first conduction section (31). The vehicle contact according to claim 3, characterized in that.

5. The other end of the connection bracket (422) is formed as a clamping portion (424). The clamping portion (424) clamps the end of the second conduction section (32) away from the first conduction section (31), or the clamping portion (424) clamps the end of the second conduction section (32) close to the first conduction section (31). The vehicle contact according to claim 3, characterized in that.

6. Permanent magnets (423) are respectively installed in four corner regions of the driving base (421). Magnetic conductive pieces are respectively installed at both ends of the driving coil (41). The magnetic conductive piece at one end of the driving coil (41) attracts with the two permanent magnets (423) at one end of the driving base (421), and the magnetic conductive piece at the other end of the driving coil (41) attracts with the two permanent magnets (423) at the other end of the driving base (421). The polarities inside the two permanent magnets (423) located at the same end of the driving base (421) are opposite. The vehicle contact according to claim 3, characterized in that.

7. The distance between the free end of the permanent magnet (423) and the rotation center of the microswitch (42) is smaller than the distance between the contact point of the second connection terminal (20) and the second conduction section (32) and the rotation center of the microswitch (42). The vehicle contactor according to claim 6, characterized in that.

8. The drive assembly (40) further includes a rotation shaft, and the drive base (421) is connected to the rotation shaft and rotates around the rotation 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) are installed at intervals at one end of the drive base (421). The inner sides of the first magnetic pole (4231) and the second magnetic pole (4232) have opposite polarities. The third magnetic pole (4233) and the fourth magnetic pole (4234) are installed at intervals at the other end of the drive base (421). The inner sides of the third magnetic pole (4233) and the first magnetic pole (4232) have opposite polarities. The inner sides of the first magnetic pole and the third magnetic pole (4233) have the same polarity and are installed close to the drive coil (41). The inner sides of the second magnetic pole (4232) and the fourth magnetic pole (4234) have the same polarity and are installed away from the drive coil (41). The magnetic conductive piece includes a first magnetic conductive piece and a second magnetic conductive piece. One end of the first magnetic conductive piece is connected to one end of the drive coil (41), and the other end of the first magnetic conductive piece is installed between the first magnetic pole (4231) and the second magnetic pole (4232). One end of the second magnetic conductive piece is connected to the other end of the drive coil (41), and the other end of the second magnetic conductive piece is installed between the third magnetic pole (4233) and the fourth magnetic pole (4234). The vehicle contactor according to claim 6, characterized in that.

9. The drive base (421) is configured as an insulating member, or an insulating layer is applied to the drive base (421). The vehicle contactor according to claim 6, characterized in that.

10. The conductive bus bar (30) further includes a flexible connection part (33). The flexible connection part (33) connects the first conduction section (31) to the second conduction section (32) and is located between the first conduction section (31) and the second conduction section (32). The second conduction section (32) can swing relative to the flexible connection part (33) and move towards or away from the second connection terminal (20). The vehicle contactor according to claim 1 is characterized by this.

11. An arc-shaped groove (331) is installed in the flexible connection part (33). The arc-shaped groove (331) penetrates the flexible connection part (33) along the height direction of the conductive bus bar (30). The vehicle contactor according to claim 10 is characterized by this.

12. It further includes a sensor (70) and a controller. The sensor (70) is installed close to the first connection terminal (10), the second connection terminal (20), or the conductive bus bar (30), and detects the circuit signal of the first connection terminal (10), the second connection terminal (20), or the conductive bus bar (30) in real time. The controller is electrically connected to the sensor (70), and controls the drive assembly (40) based on the circuit signal to electrically disconnect or connect the second conduction section (32) and the second connection terminal (20). The vehicle contactor according to claim 1 is characterized by this.

13. The controller acquires the temperature, voltage, or current of the first connection terminal (10), the second connection terminal (20), or the conductive bus bar (30) based on the circuit signal. When the temperature of the first connection terminal (10), the second connection terminal (20), or the conductive bus bar (30) is greater than the first temperature threshold, or the voltage is greater than the first voltage threshold, or the current is greater than the first current threshold, the controller is arranged to electrically disconnect the second conduction section (32) and the second connection terminal (20). The vehicle contactor according to claim 12 is characterized by this.

14. When the temperature of the first connection terminal (10), the second connection terminal (20), or the conductive bus bar (30) is lower than a second temperature threshold, or when the voltage is lower than a second voltage threshold, or when the current is lower than a second current threshold, the controller is arranged to electrically connect the second conduction section (32) and the second connection terminal (20). The second temperature threshold is equal to or lower than the first temperature threshold, the second voltage threshold is equal to or lower than the first voltage threshold, and the second current threshold is equal to or lower than the first current threshold. The vehicle contactor according to claim 13, characterized in that.

15. Further including a housing (50), the housing (50) defines an accommodation space, and the conductive bus bar (30), the first connection terminal (10), the second connection terminal (20), and the drive assembly (40) are all installed in the accommodation space. The first connection terminal (10) and the second connection terminal (20) at least partially extend from the housing (50). The vehicle contactor according to claim 1, characterized in that.

16. A low-voltage signal terminal (60) is further installed outside the housing (50), and the low-voltage signal terminal (60) is connected to the drive coil (41). The vehicle contactor according to claim 15, characterized in that.

17. Including a positive contactor (100a), a negative contactor (100b), and a pre-charge circuit contactor (100c), and one or more of the positive contactor (100a), the negative contactor (100b), and the pre-charge circuit contactor (100c) are configured as the contactor (100) according to any one of claims 1 to 16. A charging and power distribution system for a vehicle, characterized in that.

18. A charging stand, characterized by including the contactor (100) according to any one of claims 1 to 16.

19. A vehicle, characterized by including the contactor (100) according to any one of claims 1 to 16.

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