CN217239299U - Change-over switch and charging system - Google Patents

Abstract

The application provides a change over switch and charging system, this change over switch includes casing, output terminal, multiunit input terminal, a plurality of switch module and driving piece. The switch assembly comprises a mounting part, a rotating part and an elastic pushing part. The installation part is provided with a gear part. A rotating piece in one switch assembly drives the elastic pushing piece to rotate to abut against the gear part on the mounting piece. The elastic pushing piece pushes the mounting piece to enable the contact pairs on the mounting piece to move towards the direction close to the corresponding input terminal and output terminal, and the input terminal is connected with the output terminal. A rotating member in a switch assembly moves a resilient urging member away from a shift portion on the mounting member. The contact pair on the mounting member moves in a direction away from the corresponding input terminal and output terminal, and disconnects the input terminal from the output terminal. The driving piece drives the rotating piece to rotate so as to switch the elastic pushing pieces in different switch assemblies to be respectively abutted against the gear parts on the mounting piece. Thus, the different input terminal and output terminal are switched to be connected.

Description

Change-over switch and charging system

Technical Field

The application relates to the field of control switches, in particular to a change-over switch and a charging system.

Background

In a new energy charging system, 3 or more than 3 groups of switching devices are needed to control the on-off of a multi-path charging output circuit of the charging system, so that the overall power density of the new energy charging system is improved. However, some existing switching devices are manually controlled, multiple groups of switches need to be matched for use, and the problems of large occupied space and complex control exist.

SUMMERY OF THE UTILITY MODEL

The application provides a change over switch and charging system has solved current new forms of energy charging system and need use not only that the occupation space is big and control also more complicated problem.

In order to achieve the purpose, the technical scheme is as follows:

in a first aspect, an embodiment of the present application provides a switch, which includes a housing, an output terminal, a plurality of input terminals, a plurality of switch assemblies, and a driving member. Wherein, a part of the output terminal is arranged in the shell, and the other part of the output terminal is arranged outside the shell. The output terminals may be provided in one set, or two or more sets. One part of each set of input terminals is disposed within the housing and the other part of each set of input terminals is disposed outside the housing.

Each switch component comprises a mounting part, a rotating part and an elastic pushing part. Wherein, the installed part is movably installed in the shell. And, be equipped with the contact pair on the installed part, two contacts interconnect of this contact pair, two contact pairs in the contact pair set up with input terminal, output terminal respectively relatively. The contact pairs in the switch assemblies are respectively arranged opposite to the parts, located in the shell, of the multiple groups of input terminals. And the contact pairs in the switch assemblies are opposite to the parts of the output terminals, which are positioned in the shell. A mounting cavity is formed in the mounting member, which may be a mounting bracket, for example. The rotating member is disposed within the mounting cavity of the mounting member. The elastic pushing piece is arranged on the rotating piece, and the mounting piece is provided with a gear part which can be opposite to the elastic pushing piece.

The rotating piece in one switch assembly drives the elastic pushing piece to rotate to abut against the gear part on the mounting piece. The elastic pushing piece pushes the mounting piece, so that the contact pairs on the mounting piece move towards the direction close to the corresponding input terminal and output terminal, and the input terminal and the output terminal are connected.

A rotating member in a switch assembly moves a resilient urging member away from a shift portion on the mounting member. The contact pair on the mounting member moves in a direction away from the corresponding input terminal and output terminal, and disconnects the input terminal from the output terminal.

The driving member is mounted in the housing. For example, the drive member is a drive motor. The driving piece is in transmission connection with the rotating pieces in the switch assemblies. The rotation angles of the driving pieces required for the elastic pushing pieces to abut against the gear positions on the mounting pieces in the switch assemblies are different. Therefore, the driving piece can drive the rotating piece to rotate, and in the rotating process of the rotating piece, the elastic pushing pieces in different switch assemblies can be switched to abut against the gear parts on the mounting piece respectively. Thus, the different input terminal and output terminal are switched to be connected. Since the plurality of input terminals are connected to the output lines of the plurality of inverters in the charging system, different input terminals and output terminals are connected, and different charging powers can be output. Therefore, compared with the prior art, the change-over switch of the embodiment of the application can realize the function of switching and outputting different charging powers by the installation and motion matching of the driving piece, the installation piece, the rotating piece and the elastic pushing piece, and has the advantages of compact structure and simpler control. In addition, the change-over switch provided by the embodiment of the application is integrated with the output terminal and the multiple groups of input terminals in one shell, the structural design space utilization rate in the shell is relatively high, and the occupied space is small.

It should be noted that the set of output terminals may include a positive output terminal and a negative output terminal. Each set of input terminals may include a positive input terminal and a negative input terminal. The contact pairs on the mounting piece are at least two pairs, one pair of contact pairs is arranged opposite to the part, located in the shell, of the positive input terminal in the input terminal and the part, located in the shell, of the positive output terminal in the output terminal, and the other pair of contact pairs is arranged opposite to the part, located in the shell, of the negative input terminal in the input terminal and the part, located in the shell, of the negative output terminal in the output terminal. Thus, one mounting member can simultaneously realize the connection of the positive output terminal with the positive input terminal and the connection of the negative output terminal with the negative input terminal.

The various components of the switch assembly described above may be designed in a variety of ways. In some embodiments, the rotating member is a drive gear disposed within the mounting cavity of the mounting member. The transmission gears in the plurality of switch assemblies are meshed with each other. And at least one transmission gear is in transmission connection with the driving piece. Thus, the transmission gears in a plurality of switch assemblies can be driven simultaneously by one driving piece. The transmission gear is small in size, high in transmission precision, accurate in gear adjustment, small in size, small in occupied space in the shell and beneficial to achieving miniaturization design of the change-over switch.

It should be noted that, one transmission gear in each switch assembly may be used, and two or more transmission gears may also be used. The concrete selection can be carried out according to the actual transmission requirement.

In some embodiments, the mounting members of the plurality of switch assemblies are arranged in series along a first direction. And the transmission gears in two adjacent switch assemblies can be meshed with each other along the first direction. Therefore, the transmission gear in each switch assembly can be only one, and the transmission gears in a plurality of switch assemblies can also be driven simultaneously by one driving piece. The quantity of the transmission gears in the change-over switch is less, the transmission structure is simplified, the cost can be reduced, and the miniaturization design of the change-over switch is facilitated.

And the elastic pushing piece can be a pin shaft with a spring. One end of the spring is connected with the pin shaft, and the other end of the spring is connected to the position, opposite to the elastic pushing piece, on the rotating piece. The elastic pushing piece is simple in structure and convenient to install. It should be noted that the pin shaft may be a cylindrical pin, a conical pin, or a special-shaped pin. In some embodiments, the pin may be a cylindrical pin with an outer end being a circular arc surface, so as to reduce the mechanical contact wear between the pin and the stop portion on the mounting member.

And the rotating piece is provided with a mounting boss, and the mounting boss is opposite to the elastic pushing piece. The mounting boss is provided with a mounting hole, and the spring of the elastic pushing piece is mounted in the mounting hole. The spring of the elastic pushing piece is connected with the mounting boss. The installation of spring is more convenient, and the mounting hole can lead the deformation of spring. The cooperation process effort of elastic pushing piece and installed part is stable for the moving process of installed part is more steady.

In some embodiments, the switch assembly further comprises an elastic member connected with the inner wall of the housing and the mounting member. The elastic member is used for applying a force to the mounting member to move the contact pair in a direction away from the input terminal and the output terminal. Thus, when the elastic pushing member is removed from the shift position, the elastic restoring force of the elastic member can push the mounting member back to the initial position.

Based on the above, in some embodiments, the contact pairs in the plurality of switch assemblies are respectively located above the output terminals and the plurality of sets of input terminals. The gear part is a gear boss arranged in the installation cavity of the installation part. The gear boss is positioned below the elastic pushing piece. The elastic member is located below the mounting member. One end of the elastic piece is connected with the base of the mounting piece, and the other end of the elastic piece is connected with the shell. The elastic pushing piece moves to abut against the gear boss, is compressed and pushes the mounting piece connected with the gear boss to move downwards, so that the contact point pair on the mounting piece moves towards the direction close to the corresponding input terminal and output terminal, and the input terminal is connected with the output terminal; and causes the resilient member to be compressed. The elastic piece pushing piece is moved away from the gear boss, and the elastic restoring force of the elastic piece can push the mounting piece to move upwards, so that the contact pair on the mounting piece moves towards the direction far away from the corresponding input terminal and output terminal, and the input terminal and the output terminal are disconnected. The gear switching process of the change-over switch is reliable, the distribution structure of each component in the shell is compact, the occupied space is saved, and the miniaturization design of the change-over switch is facilitated.

In some charging systems, a selector switch is required to be used that has N operating positions and 1 neutral position. Wherein N is more than or equal to 3. Therefore, when the change-over switch is applied to a new energy charging system, various charging powers can be output. Thus, in some embodiments, the diverter switch may include N switch assemblies. In the process that the driving piece rotates for a circle, N-1 times of the elastic pushing piece in one switch assembly is switched to abut against the gear position part on the mounting piece every rotation angle alpha. The 1-time rotation angle beta switches the elastic pushing piece in one switch assembly to abut against the gear position part on the mounting piece. Wherein the angle α satisfies: α is 360 °/(N + 1). The angle beta satisfies: β × [ 2 × [360 °/(N +1) ]. Therefore, the change-over switch is provided with N operation gears and 1 neutral gear, is suitable for application scenes needing to switch N charging output power circuits, and is good in safety. The interval angles of two adjacent gears in the change-over switch are the same, the design is more convenient, and the assembly of related structural components (a rotating part and an elastic pushing part) is also convenient.

In a second aspect, embodiments of the present application provide a charging system, which includes a plurality of inverters, a charging gun, and the switch in the foregoing embodiments. The changeover switch can connect or disconnect the plurality of inverters to or from the charging gun, respectively. Since the structure of the switch in the charging system of the embodiment of the present application is the same as that of the switch described in the above embodiment, the switch and the charging system can solve the same technical problem and obtain the same technical effect, and details are not repeated here.

Drawings

In order to explain the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be described below.

Fig. 1 is a schematic structural diagram of a charging system according to an embodiment of the present application;

FIG. 2 is a schematic three-dimensional structure diagram of a diverter switch according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of the switch of the embodiment of the present application for opening the upper cover of the housing;

fig. 4 is a schematic structural diagram of a mounting member in a diverter switch according to an embodiment of the present disclosure;

FIG. 5 is a front view of a diverter switch according to an embodiment of the present application;

FIG. 6 is a schematic view of the assembly of the various components within the housing of the diverter switch according to the embodiments of the present application;

fig. 7 is a second schematic structural view of the mounting member in the diverter switch according to the embodiment of the present application;

FIG. 8 is a top view of a diverter switch according to an embodiment of the present application;

FIG. 9 is a sectional view taken along line A-A of FIG. 8;

FIG. 10 is a schematic diagram of an assembly of a driver, a switch assembly, a set of input terminals and output terminals of the diverter switch according to the present invention;

fig. 11 is a schematic structural diagram of a rotary member and an elastic pushing member in the switch according to the embodiment of the present application.

Reference numerals are as follows:

100-charging system, 10-converter, 20-charging gun, 30-change-over switch, 1-housing, 11-housing chamber, 2-output terminal, 21-positive output terminal, 22-negative output terminal, O-stationary contact, 3-input terminal, 31-positive input terminal, 32-negative input terminal, 4-switch assembly, 41-mounting, 4101-mounting chamber, 410-mounting, 411-contact pair, 4111-first contact pair, 4111 a-first contact, 4111 b-second contact, 4112-second contact pair, 4112 a-third contact, 4112 b-fourth contact, 412-gear portion, 4120-gear protrusion, 42-rotary member, 421-drive gear, 422-mounting protrusion, 4221-mounting hole, 43-elastic pushing piece, 431-first spring, 432-pin shaft, 44-elastic piece, 440-second spring, P-first direction, 5-driving piece.

Detailed Description

To make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," and the like in the description examples and claims of this application and in the drawings are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor order. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "mounted," "connected," and the like are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections; either directly or indirectly through intervening media, or through the communication between two elements. Furthermore, the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such as a list of steps or elements. A method, system, article, or apparatus is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, system, article, or apparatus. "upper," "lower," "left," "right," and the like are used solely in relation to the orientation of the components in the figures, and these directional terms are relative terms that are used for descriptive and clarity purposes and that can vary accordingly depending upon the orientation in which the components in the figures are placed.

It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

The embodiment of the application provides a charging system, which can be applied to new energy automobiles or other scenes needing various charging output powers. The following description will take an example in which the charging system is applied to a new energy vehicle. Referring to fig. 1, a charging system 100 according to an embodiment of the present disclosure includes a plurality of inverters 10, a charging gun 20, and a changeover switch 30.

The plurality of inverters 10 are connected to an input terminal of a changeover switch 30. Thus, the charging system 100 may be used to provide electrical energy. The converter 10 may be a dc converter, a rectifier, or a dc transformer, which is not specifically limited in this embodiment. In order to meet the requirements of new energy vehicles with different charging power requirements, the number of the inverters 10 in the charging system 100 may be three, or may be more than three. Illustratively, the charging system 100 shown in fig. 1 includes 3 inverters 10.

The charging gun 20 in the charging system 100 can be connected to a charging port of a new energy vehicle, so as to charge the new energy vehicle. One charging gun 20 in the charging system 100 may be provided, or two or more charging guns may be provided. For example, the charging system 100 in fig. 1 includes only one charging gun 20, and only one new energy vehicle can be charged at a time. And the charging system 100 with two charging guns 20 can charge two new energy vehicles simultaneously.

The switch 30 can connect and disconnect the plurality of inverters 10 to and from the charging gun 20, respectively. The change-over switch 30 changes over different converters 10 to be connected with the charging gun 20, so that different charging powers can be output, and the charging requirements of different new energy automobiles can be met.

The switch 30 may include a plurality of manual switches. The manual switch comprises an operating mechanism, contacts (a fixed contact and a movable contact), a protection device, an arc extinguishing device and the like. The operating mechanism comprises a coil, a magnet, an action mechanical structure, a handle and the like. The contact of the manual switch can be switched on through the manual operation handle and the linkage of the action mechanical mechanism. When the circuit where the manual switch is located is overheated, overloaded or short-circuited, the coil connected in series with the main circuit in the manual switch can generate strong electromagnetic attraction, and the armature in the magnet is attracted, so that the action mechanical mechanism drives the contact to act, and the contact is disconnected. Each manual switch has a complicated internal structure and a large volume, which results in a large space occupied by the change-over switch 30. In addition, in the charging system 100, when the charging power switching control is performed, the plurality of manual switches in the switch 30 need to be used in cooperation with each other, which makes the control complicated.

Therefore, in order to solve the above problem, the embodiment of the present application provides a switch 30 capable of automatically switching multiple sets of contacts. As shown in fig. 2 and 3, the switch 30 includes a housing 1, an output terminal 2, a plurality of input terminals 3, a plurality of switch assemblies 4, and a driving member 5.

An accommodating cavity 11 as shown in fig. 3 is formed in the housing 1, and the accommodating cavity 11 is used for mounting components such as the output terminal 2, the plurality of sets of input terminals 3, the plurality of switch assemblies 4, and the driving member 5. The shape of the housing 1 can be selected appropriately according to the above-described structural design and distribution design of the plurality of components. For example, fig. 2 shows the case 1 as a rectangular parallelepiped. The housing 1 may also be a cylinder, which is not limited in this application.

A part of the output terminal 2 is located outside the housing 1. The portion of the output terminal 2 located outside the case 1 is used for connecting an input line of the charging gun 20. The other part of the output terminal 2 is inserted (inserted means inserted and provided) into the housing 1. The portion of the output terminal 2 located within the housing 1 is used for electrical connection with the input terminal 3. The number of groups of output terminals 2 in the switch 30 may be one, or two or more, and may be specifically selected according to the design requirement of the number of actual charging guns 20. When the charging system 100 includes only one charging gun 20, the number of sets of the output terminals 2 may be one. When the charging system 100 includes a plurality of charging guns 20, the number of sets of the output terminals 2 may be plural sets. The number of sets of output terminals 2 should be greater than or equal to the number of charging guns 20. When the number of sets of output terminals 2 should be larger than the number of charging guns 20, part of the output terminals 2 of the changeover switch 30 may be left vacant.

Similarly, a part of the input terminal 3 is located outside the housing 1. The portion of the input terminal 3 located outside the housing 1 is used for connecting the output line of the inverter 10. The other part of the input terminal 3 is inserted into the housing 1. The portion of the input terminal 3 located inside the housing 1 is used for electrical connection with the output terminal 2. The number of the input terminals 3 in the switch 30 may be three or more, so as to satisfy the requirement that the charging system 100 can output a plurality of charging powers. The specific number of sets of input terminals 3 may be selected according to the design requirements of the output circuit of the actual converter 10.

The switch assemblies 4 are used for switching the connection or disconnection of the input terminals 3 and the output terminals 2. The switch assembly 4 comprises a mounting member 41 as shown in fig. 4, the mounting member 41 being movably mounted in the housing 1. For example, the mounting member 41 is a mounting bracket 410. The mounting member 41 is provided with a contact pair 411 as shown in fig. 4, and both contacts of the contact pair 411 are connected to each other. The mounting member 41 and the contact pair 411 may be integrally formed to reduce the number of assembly steps. Two contacts of the pair 411 of contacts of one switch assembly 4 are disposed opposite to the portion of the input terminal 3 located in the housing 1 and the portion of the output terminal 2 located in the housing 1, respectively. The contact pair 411 of the switching element 4 serves to connect the input terminal 3 to the output terminal 2.

Based on the above, referring to fig. 5, each set of output terminals 2 may include a positive output terminal 21 and a negative output terminal 22, and a portion of the positive output terminal 21 and a portion of the negative output terminal 22 are both inserted into the case 1. Correspondingly, each set of input terminals 3 may include a positive input terminal 31 and a negative input terminal 32, and a portion of the positive input terminal 31 and a portion of the negative input terminal 32 are all disposed through the housing 1. The contact pairs 411 on the mounting frame 410 may include two or more pairs. The two contacts of the pair of contacts 411 on the mounting member 41 are disposed to face the positive electrode input terminal 31 and the positive electrode output terminal 21, respectively. The two contacts of the contact pair 411 are used to connect the positive output terminal 21 to the positive input terminal 31. The two contacts of the other pair 411 of contacts on the mounting frame 410 are disposed opposite the negative input terminal 32 and the negative output terminal 22, respectively. The two contacts of the contact pair 411 are used to connect the negative output terminal 22 with the negative input terminal 32. Thus, one mounting bracket 410 can simultaneously achieve the connection of the positive output terminal 21 with the positive input terminal 31 and the connection of the negative output terminal 22 with the negative input terminal 32.

Illustratively, the switch 30 includes 1 set of output terminals 2 and 8 sets of input terminals 3 (only some of the input terminals 3 are labeled) as shown in fig. 5. The number of the switch assemblies 4 (only some of the switch assemblies 4 are labeled in the figure) is also 8. The output terminal 2 includes a positive output terminal 21 and a negative output terminal 22, and the positive output terminal 21 and the negative output terminal 22 are both strip-shaped contact pieces as shown in fig. 6. Each set of input terminals 3 includes a positive input terminal 31 and a negative input terminal 32, and the positive input terminal 31 and the negative input terminal 32 may be both strip-shaped contact pieces. Contacts, which are stationary contacts O, are also provided at positions on the positive output terminal 21, the negative output terminal 22, the positive input terminal 31, and the negative input terminal 32 that face the contact pairs 411 on the mounting frame 410. And the contacts on the mounting bracket 410 are moving contacts. The stationary contact O and the movable contact may be made of a material different from that of the positive input terminal 31, the negative input terminal 32, the positive output terminal 21, and the negative output terminal 22. For example, the fixed contact O and the moving contact may be made of silver-nickel alloy, silver-cadmium alloy, or pure silver, which has high cost and excellent conductivity. The positive input terminal 31, the negative input terminal 32, the positive output terminal 21 and the negative output terminal 22 can be made of materials with low cost and good conductivity, such as brass, beryllium bronze or red copper, and the manufacturing cost of the change-over switch 30 is reduced on the basis of ensuring the switching performance of the change-over switch 30.

Also, two pairs of contact points 411 are disposed on the mounting frame 410 of each switch assembly 4, and as shown in fig. 7, the two pairs of contact points 42 are a first contact point pair 4111 and a second contact point pair 4112, respectively. The first contact pair 4111 is composed of a first contact 4111a and a second contact 4111 b. The second contact pair 4112 is composed of a third contact 4112a and a fourth contact 4112 b. The first contacts 4111a of the 8 switch assemblies 4 are each disposed opposite the positive output terminal 21. The second contacts 4111b of the 8 sets of switch assemblies 4 are disposed opposite to the positive input terminals 31 of the 8 sets of input terminals 3, respectively. The third contacts 4112a of the 8 switch assemblies 4 are all oppositely arranged with respect to the negative output terminal 22. The fourth contacts 4112b of the 8 switch assemblies 4 are respectively disposed opposite to the negative input terminals 32 of the 8 sets of input terminals 3.

In the following description, the output terminals 2 may include a positive output terminal 21 and a negative output terminal 22, and the input terminals 3 may include a positive input terminal 31 and a negative input terminal 32. The output terminal 2 and the output terminal 3 in the following description mean that the positive input terminal 31 and the positive output terminal 21 are connected, and the negative input terminal 32 and the negative output terminal 22 are connected. The disconnection of the output terminal 2 from the output terminal 3 in the following description means disconnection of the positive input terminal 31 from the positive output terminal 21 and disconnection of the negative input terminal 32 from the negative output terminal 22. For convenience of explanation, the following description is not explained one by one.

In order to realize the automatic switching connection of the plurality of sets of input terminals 3 and output terminals 2, the mounting part 41 of the switch 30 of the embodiment of the present application is formed with a mounting cavity 4101 as shown in fig. 7. A switch assembly 4 also comprises a rotary member 42 and a resilient pusher member 43 as shown in figures 8 and 9. The rotary member 42 is disposed in the mounting chamber 4101. The elastic pushing member 43 is mounted on the rotary member 42. The mounting member 41 is provided with a stop portion 412, and the stop portion 412 can be opposite to the elastic pushing member 43.

The rotating member 42 of one switch assembly 4 can drive the elastic pushing member 43 to rotate to abut against the stop portion 412 of the mounting member 41. The elastic pushing member 43 can push the mounting member 41 to move the contact pairs 411 on the mounting member 41 toward the corresponding input terminals 3 (the corresponding input terminals 3 refer to the input terminals opposite to the contact pairs 411) and the corresponding output terminals 2 until the contact pairs 411 connect the input terminals 3 with the output terminals 2.

The rotating member 42 of one switch assembly 4 drives the elastic pushing member 43 to move away from the stop portion 412 of the mounting member 41, and the contact pair 411 of the mounting member 41 moves away from the corresponding input terminal 3 and output terminal 2, so as to disconnect the input terminal 3 from the output terminal 2.

Therefore, in the switch of the embodiment of the present application, one switch assembly 4 can realize the connection and disconnection between the input terminal 3 and the output terminal 2 corresponding to the contact pair 411 in the switch assembly 4 through the cooperation of the internal rotating member 42 and the elastic pushing member 43.

The driving member 5 is disposed in the housing 1, and the driving member 5 is used for providing a power source. The drive member 5 may be a motor, for example a stepper motor. The rotating members 42 of the plurality of switch assemblies 4 are drivingly interconnected. Also, as shown in fig. 10, the rotary member 42 of one switch assembly 4 may be drivingly connected to the driving member 5. Alternatively, the rotary members 42 of two or more switch assemblies 4 may be drivingly connected to the drive member 5. Thus, the driving member 5 can rotate the rotating members 42 of the plurality of switch assemblies 4.

Moreover, in the switch assemblies 4 in the embodiment of the present application, the rotation angles of the driving members 5 required for the elastic pushing members 43 to abut against the stop portions 412 on the corresponding mounting members 41 (the corresponding mounting members refer to the mounting members on which the elastic pushing members 43 are located) are different. Therefore, the driving member 5 drives the rotating members 42 of the switch assemblies 4 to rotate, and the driving member 5 rotates to different angles, so that the elastic pushing members 43 of different switch assemblies 4 can be switched to abut against the gear portions 412 on the mounting member 41 respectively. Thereby, the input terminal 3 and the output terminal 2 are switched to be connected. Since the plurality of input terminals 3 are connected to the output lines of the plurality of inverters 10, different input terminals 3 are connected to the output terminal 2, and different charging powers can be output. Therefore, the switch 30 of the embodiment of the present application can realize the function of switching and outputting different charging powers by the installation and movement cooperation of the driving member 5, the mounting member 41, the rotating member 42 and the elastic pushing member 43, and has a compact structure and simple control. In addition, the output terminal 2 and the plurality of groups of input terminals 3 are integrated in one housing 1 of the change-over switch 30 according to the embodiment of the present application, and the structural design in the housing 1 has a relatively high space utilization rate and occupies a small space. Therefore, the problems that different charging powers are output through mutual matching of a plurality of manual switches, the structure is complex, the internal structure of the manual switch is complex, the size is large, and the occupied space is large are solved.

Taking the mounting device 41 as an example of the mounting frame 410 shown in fig. 10, the rotating member 42 may be a transmission gear 421, and the transmission gear 421 is mounted in the mounting chamber 4101 of the mounting frame 410. The transmission gears 421 in the plurality of switch assemblies 4 can be engaged with each other, so that the transmission of the plurality of transmission gears 421 is realized. And, one or more of the plurality of transmission gears 421 are in transmission connection with the driving member 5. Thus, the transmission gears 421 in the plural switch assemblies 4 can be driven simultaneously by one driving member 5. The transmission gear 421 has a small volume and high transmission precision, not only can adjust the gear accurately, but also has a small volume, occupies a small space in the housing 1, and is beneficial to the miniaturization design of the change-over switch 30.

It should be noted that there may be one transmission gear 421 in each switch assembly 4, or there may be two or more transmission gears. The concrete selection can be carried out according to the actual transmission requirement.

As shown in fig. 9, the mounting members 41 of the plurality of switch assemblies 4 may be sequentially arranged in the first direction P. The transmission gears 421 in two adjacent switch assemblies 4 are engaged with each other in the first direction P. Therefore, only one transmission gear 421 in each switch assembly 4 is required, and the mutual meshing of the transmission gears 421 in a plurality of switch assemblies 4 can also be realized. The number of the transmission gears 421 in the switch 30 is small, so that the transmission structure is simplified, the cost can be reduced, and the miniaturization design of the switch 30 can be further facilitated.

The rotating member 42 in addition to the above-described arrangement of the transmission gear 421, in some embodiments, the rotating member 42 may also be a sprocket. The chain wheels in two adjacent switch assemblies 4 are connected through chain transmission. A plurality of switch assemblies 4 in the change-over switch 30 are connected in a chain wheel transmission mode, and gear adjustment is accurate.

And the structure of the elastic pushing member 43 can be various. As shown in fig. 9, the elastic pushing member 43 is a pin 432 with a first spring 431. Taking the rotating member 42 as the transmission gear 421 as an example, one end of the first spring 431 in the elastic pushing member 43 is connected to the pin 432, and the other end of the first spring 431 is connected to a position on the end surface of the transmission gear 421, which is opposite to the elastic pushing member 43. The pin shaft 432 with the first spring 431 abuts against the shift position part 412 on the mounting part 41, and the elastic pushing part 43 has a simpler structure and is more convenient to mount. In addition, the elastic pushing member 43 may also be made of an elastic material, for example, the elastic pushing member 43 is a rubber rod or a silica gel rod.

The pin 432 may be a cylindrical pin, a conical pin, or a special-shaped pin. As shown in fig. 9, the pin shaft 432 is a cylindrical pin, and the outer end of the pin shaft 432 (the outer end is the end close to the upper shift position portion 412 of the mounting member 41) is a circular arc surface to reduce the mechanical contact wear between the pin shaft 432 and the upper shift position portion 412 of the mounting member 41.

In order to facilitate the connection between the first spring 431 of the elastic pushing member 43 and the rotary member 42, still taking the rotary member 42 as the transmission gear 421 as an example, as shown in fig. 11, an installation boss 422 is provided on an end surface of the transmission gear 421, and the installation boss 422 is opposite to the position of the elastic pushing member 43. For example, the mounting boss 422 can be integrally formed with the transmission gear 421. The mounting boss 422 is formed with a mounting hole 4221, and the first spring 431 of the elastic pushing member 43 can be mounted in the mounting hole 4221. And, the first spring 431 is connected to the mounting boss 422. The first spring 431 is convenient to mount, the mounting hole 4221 can guide the deformation of the first spring 431, the acting force of the matching process of the elastic pushing piece 43 and the mounting piece 41 is stable, and the moving process of the mounting piece 41 is stable.

Based on the above structural design of the elastic pushing member 43, the stop portion 412 on the mounting member 41 needs to adopt a structure capable of cooperating with the elastic pushing member 43. Taking the mounting member 41 as the mounting frame 410 as an example, the shift portion 412 may be a shift groove formed on the mounting member 41, or may be a shift boss formed on the mounting frame 410. Specifically, the selection can be made according to the relative positional relationship between the contact pair 411 and the output terminal 2 and the input terminal 3, and the mounting position of the shift portion 412 on the mounting member 41.

For example, the contact pairs 411 in the plurality of switch assemblies 4 are respectively located above the output terminals 2 and the plurality of sets of input terminals 3. The gear portion 412 may be a gear boss 4120 as shown in fig. 10. The shift stage boss 4120 is provided in the mounting chamber 4101 of the mounting member 41, and the shift stage boss 4120 is located below the elastic pushing member 43. The elastic pushing piece 43 moves to abut against the shift boss 4120, the elastic pushing piece 43 can be compressed, and pushes the mounting piece 41 connected with the shift boss 4120 to move downwards, so that the contact pair 411 on the mounting piece 41 moves towards the direction close to the corresponding input terminal 3 and output terminal 2, and the input terminal 3 is connected with the output terminal 2. The mounting member 41 can move downward under the action of gravity and the force of the elastic pushing member 43, so that the contact pair 411 on the mounting member 41 can be reliably connected with the input terminal 3 and the output terminal 2.

Based on the above, the switch assembly 4 further includes the elastic member 44 as shown in fig. 9, and the elastic member 44 is connected to the inner wall of the housing 1 and the mounting member 41. The elastic member 44 may be any one of a spring and an elastic washer. For example, as shown in fig. 9, the elastic member 44 is a second spring 440, one end of the second spring 440 is connected to the inner wall of the housing 1, and the other end of the second spring 440 is connected to the outer wall of the mounting member 41. The elastic member 44 is used to apply a force to the mounting member 41 to move the contact pair 411 in a direction away from the input terminal 3 and the output terminal 2. Thus, when the elastic pushing member 43 is removed from the shift stage boss 4120, the elastic restoring force of the elastic member 44 may push the mounting member 41 back to the original position.

For embodiments in which the contact pairs 411 in the plurality of switch assemblies 4 are located above the output terminals 2 and the plurality of sets of input terminals 3, respectively, as shown in fig. 9, the elastic member 44 may be installed between the bottom of the mounting member 41 and the housing 1. The elastic member 44 may be compressed when the elastic pushing member 43 pushes the mounting member 41 to move downward. When the elastic pushing member 43 moves away from the shift boss 4120, the compression restoring force of the elastic member 44 pushes the mounting member 41 to move upward, so that the contact pair 411 on the mounting member 41 moves away from the corresponding input terminal 3 and output terminal 2, and the input terminal 3 is disconnected from the output terminal 2. The gear switching process of the switch 30 is reliable, the distribution structure of each component in the shell 1 is compact, the occupied space is saved, and the miniaturization design of the switch 30 is facilitated.

In some embodiments, the contact pairs 411 in the plurality of switch assemblies 4 are respectively located below the output terminals 2 and the sets of input terminals 3. The gear portion 412 may be a gear groove. The shift position recess is provided in the mounting chamber 4101 of the mounting member 41, and the shift position recess is located above the elastic pushing member 43. The first spring 431 in the elastic pusher 43 is always compressed when the elastic pusher 43 abuts from the other position of the mount 41. When the elastic pusher 43 abuts against the shift position recess of the mounting member 41, the restoring force of the first spring 431 in the elastic pusher 43 pushes the mounting member 41 to move upward, so that the contact pair 411 on the mounting member 41 moves in a direction to approach the corresponding input terminal 3 and output terminal 2, and the input terminal 3 is connected to the output terminal 2. When the elastic pushing piece 43 is removed from the shift position groove of the mounting piece 41, the mounting piece 41 can return to the initial position under the action of gravity, so that the contact pair 411 on the mounting piece 41 moves away from the corresponding input terminal 3 and output terminal 2, and the input terminal 3 is disconnected from the output terminal 2.

The respective components in the changeover switch 30 are explained above. In some charging systems 100, the changeover switch 30 that needs to be used has N operating positions and 1 neutral position. Wherein N is more than or equal to 3. Therefore, when the change-over switch 30 is applied to a new energy charging system, various charging powers can be output.

Here, one operation shift position of the switch 30 means that the driving member 5 drives the transmission gear 421 to rotate, so that the elastic pushing member 43 in one switch assembly 4 moves to abut against the shift position portion 412 of the mounting member 41. Thus, the input terminal(s) 3 within the changeover switch 30 are connected to the output terminal 2. Neutral means that the driving member 5 drives the transmission gear 421 to rotate, so that the elastic pushing members 43 in the plurality of switch assemblies 4 are not in contact with the shift position portion 412 of the mounting member 41. Accordingly, all the input terminals 3 and the output terminals 2 in the changeover switch 30 are not connected. The selector switch 30 is set to a neutral position, and a plurality of contacts in the selector switch 30 can be normally opened. When charging is not required, the change-over switch 30 is switched to neutral, and the inverter 10 and the charging gun 20 can be disconnected, so that the charging gun 20 is not electrified, and the safety is higher.

To achieve the above-described selector switch 30 with N operating positions and 1 neutral position, the selector switch 30 may comprise N switch assemblies 4. During one rotation of the driving member 5, the elastic pushing member 43 in one switch assembly 4 is switched to abut against the stop portion 412 on the mounting member 41 every N-1 times of rotation angle alpha. The 1-time rotation angle β switches the elastic pushing member 43 in one switch assembly 4 to abut against the stop portion 412 on the mounting member 41. Wherein the angle α satisfies: α is 360 °/(N + 1). The angle beta satisfies: β × [ 2 × [360 °/(N +1) ]. I.e. β -2 α. Thus, it is realized that the changeover switch 30 has N operation steps. When the selector switch 30 needs to be rotated by the angle β to be shifted to the next operating range, the selector switch 30 can be considered to be shifted to the neutral position after the driver 5 is rotated by the angle α first, because β is 2 α. After the driving member 5 is rotated by the angle α again, the next operating range is shifted. It is thus achieved that the changeover switch 30 also has a neutral gear.

I.e. the difference in the required rotational angle of the driver 5 for two adjacent operating gears is the angle alpha. Whereas for the two operating positions of the selector switch 30 adjacent to neutral the difference in the rotational angle of the drive element 5 required for these two operating positions is the angle β. Moreover, each time the switch 30 is rotated by the angle α, one shift position (the shift position may be an operating shift position or a neutral shift position) may be switched. The switch 30 is suitable for an application scenario that N charging output power circuits need to be switched, and has good safety.

Illustratively, as shown in fig. 9, the number of the switch assemblies 4 in the switch assembly 30 is 8, and the number of the rotary member 42 and the elastic pushing member 43 in one switch assembly 4 is 1. The change-over switch 30 has 8 operating gear positions and a neutral position. The difference value alpha of the rotation angles of the driving piece 5 corresponding to the two adjacent operation gears satisfies that: α is 360 °/(8+1) is 40 °. For the two operating positions of the selector switch 30 adjacent to neutral, the difference β between the angles of rotation of the drive member 5 required for these two operating positions is such that: β ═ 2 × [360 °/(8+1) ] ═ 80 °. Each time the switch 30 is turned 40 °, a shift position is switched.

In other charging systems, the switch 30 may be required to have 3 operating positions and 1 neutral position. The difference value alpha of the rotation angles of the driving piece 5 corresponding to the two adjacent operation gears satisfies that: alpha is 360 °

And/3 +1 equals 90. For two operating positions adjacent to the neutral position of the switch 30, the difference β between the rotational angles of the drive 5 required for these two operating positions satisfies: β × [360 °/(3+1) ], 180 °.

The two adjacent gears in the switch 30 have the same interval angle, so that the design is convenient, and the assembly of related structural components (the rotating part 42 and the elastic pushing part 43) is also convenient. It is understood that the interval angle between two adjacent shift positions of the plurality of shift positions of the changeover switch 30 may be different. The selection can be specifically carried out according to actual needs.

The above description is made for exemplifying the gear positions of different switches 30, and the number of the gear positions of the switch 30 in the embodiment of the present application may be other schemes, which are not exhaustive here.

The drive member 5 in the change-over switch 30 may be a stepping motor based on the above-described shift design of the change-over switch 30. Different gears in the switch 30 correspond to different steps of rotation of the stepping motor, thereby controlling the rotation angle of the stepping motor. The gear position of the change-over switch 30 is accurately changed and the control is simple.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A diverter switch, comprising:

a housing;

an output terminal, a portion of which is inserted into the housing;

a plurality of sets of input terminals, a portion of each set of input terminals passing through the housing;

each switch assembly comprises a mounting piece, a rotating piece and an elastic pushing piece, wherein the mounting piece is movably mounted in the shell and is provided with a contact pair; two contacts in the contact pair are connected with each other, and the two contact pairs in the contact pair are respectively arranged opposite to the input terminal and the output terminal; the contact pairs in the switch assemblies are respectively arranged opposite to the parts, positioned in the shell, of the input terminals, and the contact pairs in the switch assemblies are respectively arranged opposite to the parts, positioned in the shell, of the output terminals; a mounting cavity is formed in the mounting piece, and the rotating piece is arranged in the mounting cavity of the mounting piece; the elastic pushing piece is arranged on the rotating piece, and the mounting piece is provided with a gear part which can be opposite to the elastic pushing piece; a rotating piece in one switch assembly drives the elastic pushing piece to rotate to abut against a gear position part on the mounting piece, and the elastic pushing piece pushes the mounting piece so that a contact pair on the mounting piece moves towards the direction close to the corresponding input terminal and the output terminal to connect the input terminal and the output terminal; a rotating piece in one switch assembly drives the elastic pushing piece to move away from the gear position part on the mounting piece, and the contact pair on the mounting piece moves towards the direction far away from the corresponding input terminal and output terminal to disconnect the input terminal from the output terminal;

a drive member mounted within the housing; the rotating pieces in the switch assemblies are mutually connected in a transmission way, and the rotating piece in at least one switch assembly is connected with the driving piece in a transmission way; the driving piece is used for driving the rotating pieces in the switch assemblies to rotate, and the elastic pushing pieces for switching different switch assemblies are respectively abutted against the corresponding gear positions on the mounting piece so as to switch different input terminals to be connected with the output terminals.

2. The diverter switch according to claim 1, wherein the rotating member is a transmission gear disposed within the mounting cavity of the mounting member, the transmission gears of the plurality of switch assemblies are intermeshed, and at least one of the transmission gears is drivingly connected to the drive member.

3. The diverter switch according to claim 1 or 2, wherein the resilient urging member is a pin with a spring; one end of the spring is connected with the pin shaft, and the other end of the spring is connected to the position, opposite to the elastic pushing piece, on the rotating piece.

4. The diverter switch according to claim 3, wherein the rotary member is provided with a mounting boss opposite to the position of the elastic pushing member; the mounting boss is provided with a mounting hole, and the spring of the elastic pushing piece is mounted in the mounting hole; and the spring of the elastic pushing piece is connected with the mounting boss.

5. The diverter switch according to any of claims 1-4, wherein one of said switch assemblies further comprises:

the elastic piece is connected with the inner wall of the shell and the mounting piece; the elastic member is used for applying a force to the mounting member to move the contact pair in a direction away from the input terminal and the output terminal.

6. The diverter switch according to claim 5, wherein a plurality of contact pairs of said switch assembly are located above said output terminals and said plurality of sets of said input terminals, respectively; the gear part is a gear boss arranged in the mounting cavity of the mounting part, and the gear boss is positioned below the elastic pushing part; the elastic piece is positioned below the mounting piece, one end of the elastic piece is connected with the bottom of the mounting piece, and the other end of the elastic piece is connected with the shell;

the elastic pushing piece moves to abut against the gear boss, is compressed and pushes the mounting piece connected with the gear boss to move downwards, so that the contact pair on the mounting piece moves towards the direction close to the corresponding input terminal and the output terminal, and the input terminal is connected with the output terminal; and causing the resilient member to be compressed;

the elastic pushing piece moves away from the gear boss, and the elastic restoring force of the elastic pushing piece pushes the mounting piece to move upwards, so that the contact pair on the mounting piece moves towards the direction away from the corresponding input terminal and output terminal, and the input terminal and the output terminal are disconnected.

7. The diverter switch according to claim 2 or 3, wherein the mounting members of a plurality of switch assemblies are arranged in series along a first direction, and the transmission gears of two adjacent switch assemblies are engaged with each other along the first direction.

8. The diverter switch according to any of claims 1-7, wherein each set of said input terminals comprises a positive input terminal and a negative input terminal, said output terminals comprise a positive output terminal and a negative output terminal, said mounting has at least two pairs of contacts, one pair of said contacts being disposed opposite a portion of said input terminals where said positive input terminal is located within said housing and a portion of said output terminals where said positive output terminal is located within said housing; the other pair of the contacts is arranged opposite to the part of the input terminal, in which the negative input terminal is positioned in the shell, and the part of the output terminal, in which the negative output terminal is positioned in the shell.

9. The diverter switch according to any of claims 1-8, wherein there are N switch assemblies in the diverter switch; in the process of one rotation of the driving piece, N-1 times of each rotation angle alpha switches the elastic pushing piece in one switch assembly to abut against the gear position part on the mounting piece, and 1 time of rotation angle beta switches the elastic pushing piece in one switch assembly to abut against the gear position part on the mounting piece; wherein the angle α satisfies: α ═ 360 °/(N +1) ]; the angle beta satisfies: β × [ 2 × [360 °/(N +1) ].

10. A charging system comprising at least three converters, a charging gun and a diverter switch according to any one of claims 1 to 9 for connecting and disconnecting the at least three converters to the charging gun respectively.

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