Relay, control method, controller, charge and discharge control system and vehicle

Abstract

The invention relates to a relay, a control method, a controller, a charging and discharging control system and a vehicle, and relates to the technical field of electronic components. The relay comprises a first contact assembly, a second contact assembly and a driving assembly. The first contact assembly is used for being connected with a first loop in series. The second contact assembly is used for being connected with a second loop in series. The driving assembly is connected with the first contact assembly and the second contact assembly and used for driving the first contact assembly and the second contact assembly respectively so that the first contact assembly can control on-off of the first loop, and the second contact assembly can control on-off of the second loop. Thus, the same driving assembly can drive the two loops to be connected and disconnected, it is not required that each loop is provided with an independent driving assembly, and therefore the cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electronic components, and in particular to a relay, a control method, a controller, a charge and discharge control system and a vehicle. Background Art

[0002] A relay is a commonly used electrical control component that uses electromagnetic effects to control the on / off of a circuit. The relay mainly contains a drive component and a contact component. The drive component is usually composed of a coil and a moving iron core. When the coil is energized, a magnetic field is generated to attract the moving iron core to move, thereby triggering the action of the contact component. The contact component is connected to the circuit to control the connection and disconnection of the circuit.

[0003] However, currently a set of driving components of a relay can usually only drive one set of contact components. If more than two circuits are to be controlled, two sets of driving components and two sets of corresponding contact components need to be set up separately, resulting in high costs. Summary of the invention

[0004] The embodiment of the present application provides a relay, which reduces the cost of controlling multiple circuits by the relay, so as to at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above object, according to a first aspect of the present application, a relay is provided, comprising:

[0006] A first contact assembly, used to be connected in series with the first circuit;

[0007] A second contact assembly, used to be connected in series with the second circuit;

[0008] A driving component is connected to the first contact component and the second contact component, and is used to drive the first contact component and the second contact component respectively, so as to control the on and off of the first circuit through the first contact component and the on and off of the second circuit through the second contact component.

[0009] Optionally, the driving assembly includes a moving iron core, a coil and a push rod;

[0010] The moving iron core is coaxially arranged with the coil and reciprocates along with the magnetic field generated by the coil;

[0011] The push rod is connected to the moving iron core, the first contact assembly and the second contact assembly, and is used for driving the first contact assembly and the second contact assembly to move under the driving of the moving iron core.

[0012] Optionally, when the moving iron core drives the push rod to move a first distance from the initial position, the push rod drives the first contact assembly to be turned on and the second contact assembly to be turned off;

[0013] When the moving iron core drives the push rod to move a second distance from the initial position, the push rod drives the first contact assembly to be disconnected and the second contact assembly to be connected.

[0014] Optionally, the first contact assembly includes a first moving portion and at least two first wiring portions;

[0015] The first connection portion is disposed on a housing of the relay, and one side thereof extends out of the housing to connect to the first circuit;

[0016] The first moving part is connected to the push rod, and the first moving part is driven by the push rod to contact or separate from each of the first connecting parts at the same time.

[0017] Optionally, the first wiring portion includes a first static wiring terminal, a first contact piece, a first flexible connection piece and a first spring;

[0018] One side of the first static connection terminal extends out of the housing, and the other side is connected to the first flexible connection member in the housing;

[0019] One end of the first spring is connected to the housing, and the other end is wound around the outside of the first contact piece to apply elastic force to the first contact piece to move the first contact piece toward the first moving part; the first contact piece is connected to the first soft connector.

[0020] Optionally, the first moving part includes a first moving contact end and an abutment member;

[0021] The abutment member and the first movable contact end are sequentially arranged on the push rod and move along the axis direction of the push rod with the push rod;

[0022] The first movable contact end is arranged opposite to the first contact member; the abutting member is provided with an inclined surface, and when the abutting member moves close to the first contact member, the inclined surface abuts against the first contact member to push the first contact member.

[0023] Optionally, the first moving part further includes a bracket and a plurality of stoppers, wherein the bracket is disposed on the push rod and moves along the axis direction of the push rod along with the push rod;

[0024] The limiting member is arranged on the bracket and is located outside the first moving contact end, and is used to limit the first contact member after the first contact member is separated from the first moving contact end.

[0025] Optionally, the limiting member includes a first column, a second column and a second spring;

[0026] The first column is connected to the bracket, one end of the second column is opened and sleeved on the first column, one end of the second spring is connected to the bracket, and the other end is connected to the second column.

[0027] Optionally, the first moving part also includes a third spring sleeved on the push rod, one end of the third spring is connected to the bracket, and the other end of the third spring is connected to the abutment member, and is used for applying an elastic force along the axis direction of the push rod to the bracket.

[0028] Optionally, the first wiring portion includes a second static wiring terminal, a second contact piece, a second flexible connection piece and a fourth spring;

[0029] One side of the second static connection terminal extends out of the housing, and the other side is connected to the second flexible connection member in the housing;

[0030] The second contact piece is connected to the second flexible connector, and a side of the second contact piece close to the first wiring portion is bent to form a bent surface, and the bent surface is arranged opposite to the first wiring portion;

[0031] One end of the fourth spring is connected to the housing, and the other end is wound around the outer side of the second contact piece, so as to apply elastic force to the second contact piece to drive the second contact piece to move close to the first moving part.

[0032] Optionally, the first moving part includes an insulating member and a second moving contact terminal;

[0033] The insulating member and the second movable contact terminal are sequentially sleeved on the push rod and move along the axis direction of the push rod with the push rod;

[0034] Both sides of the second moving contact terminal are bent in directions parallel to the bending surface to form a conductor contact surface arranged opposite to the bending surface; the second moving contact terminal is extended from both sides of the insulating member to form an insulating contact surface matching the bending surface.

[0035] Optionally, the second contact assembly includes a second moving portion and at least two second wiring portions;

[0036] The second wiring portion is disposed on the housing of the relay, and one side thereof extends out of the housing to connect to the second circuit;

[0037] The second moving part is connected to the push rod, and driven by the push rod, the second moving part contacts or separates from each of the second wiring parts at the same time.

[0038] Optionally, the second wiring portion includes a wiring post, one end of which extends out of the shell, and the other end of which is arranged in the shell opposite to the second movable portion.

[0039] Optionally, the second moving part includes a third moving contact terminal and a mounting frame;

[0040] The third moving contact terminal and the mounting bracket are sleeved on the push rod and move along the axis direction of the push rod with the push rod;

[0041] A fixing hole for the third moving contact terminal to pass through is provided on the mounting frame in a direction perpendicular to the push rod, and two ends of the third moving contact terminal are respectively arranged opposite to the connecting posts after passing through the fixing hole.

[0042] Optionally, the second moving part further includes a fifth spring;

[0043] The fifth spring sleeve is arranged on the push rod, one end of the fifth spring is connected to the push rod, and the other end is connected to the mounting bracket to apply elastic force along the direction of the push rod to the mounting bracket.

[0044] According to a second aspect of the present application, a relay control method is provided. Based on the above relay, the method includes:

[0045] Passing a first current signal into the driving component, so that the driving component drives the first contact component to be turned on and the second contact component to be turned off;

[0046] Passing a second current signal into the driving component, so that the driving component drives the first contact component to be disconnected and the second contact component to be connected;

[0047] Wherein, the amplitude of the second current signal is greater than the amplitude of the first current signal.

[0048] Optionally, the relay is applied to battery charge and discharge control, the first circuit is a pre-charge circuit, the second circuit is a main circuit, and the method further includes:

[0049] receiving a charging request, and transmitting a first current signal to the driving component according to the charging request, so that the driving component drives the first contact component to be turned on and the second contact component to be turned off, so that the pre-charging circuit is turned on and the main circuit is turned off;

[0050] A pre-charging completion instruction is received, and based on the pre-charging completion instruction, a second current signal is passed to the driving component, so that the driving component drives the first contact component to disconnect and the second contact component to connect, so that the pre-charging circuit is disconnected and the main circuit is connected.

[0051] According to a third aspect of the present application, there is provided a controller having a computer program stored thereon, wherein the computer program implements the steps of the above method when executed by a processor.

[0052] According to a fourth aspect of the present application, a charge and discharge control system is provided, characterized in that it includes the above-mentioned controller or the above-mentioned relay.

[0053] According to a fifth aspect of the present application, a vehicle is provided, characterized in that it includes a charge and discharge control system as described above.

[0054] To summarize, in the relay of the embodiment of the present application, the first contact assembly and the second contact assembly are respectively connected in series to the first circuit and the second circuit, and then the first contact assembly and the second contact assembly are respectively driven by the driving assembly, and the first circuit is controlled on and off by the first contact assembly, and the second circuit is controlled on and off by the second contact assembly. In this way, the same driving assembly drives the two circuits to be on and off respectively, and there is no need to set up an independent driving assembly for each circuit, thereby reducing costs.

[0055] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0057] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0058] Figure 1 is a schematic diagram of a relay structure provided in an exemplary embodiment of the present disclosure;

[0059] Figure 2 is a structural schematic diagram of a first circuit and a second circuit controlled by a relay being disconnected in an exemplary embodiment of the present disclosure;

[0060] Figure 3 is a schematic structural diagram of a first moving part provided in an exemplary embodiment of the present disclosure;

[0061] Figure 4 is a schematic diagram of a relay housing structure provided in an exemplary embodiment of the present disclosure;

[0062] Figure 5It is a schematic diagram of a first circuit being turned on and a second circuit being turned off controlled by a relay provided in an exemplary embodiment of the present disclosure;

[0063] Figure 6 yes Figure 5 A magnified view of part A;

[0064] Figure 7 is a structural schematic diagram of providing a first circuit and a second circuit controlled by a relay that are both connected, provided in an exemplary embodiment of the present disclosure;

[0065] Figure 8 is a schematic diagram of relative sliding of a first moving portion and a first contact portion provided in an exemplary embodiment of the present disclosure;

[0066] Fig. 9 It is a schematic diagram of a first circuit being disconnected and a second circuit being connected controlled by a relay provided in an exemplary embodiment of the present disclosure;

[0067] Fig.10 is a schematic diagram of a first moving portion and a first contact portion in a first circuit disconnected state provided in an exemplary embodiment of the present disclosure;

[0068] Fig.11 yes Fig.10 A magnified view of part B;

[0069] Fig.12 is a schematic diagram of a relay structure provided in another exemplary embodiment of the present disclosure;

[0070] Fig.13 It is a schematic diagram of a first circuit being disconnected and a second circuit being connected controlled by a relay provided in another exemplary embodiment of the present disclosure;

[0071] Fig.14 is a schematic structural diagram of a first circuit and a second circuit controlled by a relay provided in another exemplary embodiment of the present disclosure, both of which are turned on;

[0072] Fig.15 It is a schematic diagram of another exemplary embodiment of the present disclosure in which a first circuit controlled by a relay is disconnected and a second circuit is connected.

[0073] Description of reference numerals:

[0074] 1. A first contact assembly;

[0075] 11. first connection part; 111. first static connection terminal; 112. first contact member; 1121. blocking plate; 1122. contact plate; 113. first flexible connection member; 114. first spring; 115. second static connection terminal; 116. second contact member; 1161. bending surface; 117. second flexible connection member; 118. fourth spring;

[0076] 12, first moving part; 121, first moving contact end; 1211, contact block; 122, abutment member; 1221, inclined surface; 123, bracket; 124, stop member; 1241, first column; 1242, second column; 1243, second spring; 125, third spring; 126, insulating member; 1261, insulating contact surface; 127, second moving contact terminal; 1271, conductor contact surface;

[0077] 2. second contact assembly; 21. second moving part; 211. third moving contact terminal; 212. mounting frame; 2121. fixing hole; 213. fifth spring; 22. second wiring part; 221. wiring post;

[0078] 3. Driving assembly; 31. Push rod;

[0079] 4. Shell. DETAILED DESCRIPTION

[0080] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0081] According to the first aspect of the present application, referring to Figures 1 to 4 The present disclosure provides a relay, comprising a first contact assembly 1, a second contact assembly 2 and a drive assembly 3. The first contact assembly 1 is used to be connected in series with a first circuit. The second contact assembly 2 is used to be connected in series with a second circuit. The drive assembly 3 is connected to the first contact assembly 1 and the second contact assembly 2, and is used to drive the first contact assembly 1 and the second contact assembly 2 respectively, so as to control the on-off of the first circuit through the first contact assembly 1 and the on-off of the second circuit through the second contact assembly 2.

[0082] As an example, the driving component 3 can control the conduction of one of the first circuit and the second circuit separately through the first contact component 1 and the second contact component 2, and can also control the conduction or disconnection of the first circuit and the second circuit at the same time.

[0083] In the above embodiment, the first contact assembly 1 and the second contact assembly 2 are respectively connected in series to the first circuit and the second circuit, and then the first contact assembly 1 and the second contact assembly 2 are respectively driven by the driving assembly 3, and the first contact assembly 1 controls the on and off of the first circuit, and the second contact assembly 2 controls the on and off of the second circuit. In this way, the same driving assembly 3 drives the two circuits to be on and off respectively, and there is no need to set up an independent driving assembly 3 for each circuit, thereby reducing costs.

[0084] Reference Figure 1 In some embodiments, the driving assembly 3 includes a moving iron core, a coil, and a push rod 31. The moving iron core is coaxially arranged with the coil and reciprocates with the magnetic field generated by the coil. The push rod 31 is connected to the moving iron core, the first contact assembly 1, and the second contact assembly 2, and is used to drive the first contact assembly 1 and the second contact assembly 2 to move under the drive of the moving iron core.

[0085] As an example, when the moving iron core drives the push rod 31 to move a first distance from the initial position, the push rod 31 drives the first contact assembly 1 to be turned on and the second contact assembly 2 to be turned off. When the moving iron core drives the push rod 31 to move a second distance from the initial position, the push rod 31 drives the first contact assembly 1 to be turned off and the second contact assembly 2 to be turned on.

[0086] The initial position may be the position of the push rod 31 when the coil is powered off, and in the initial position, the first contact assembly 1 and the second contact assembly 2 are disconnected at the same time. The first distance is smaller than the second distance, and further, when the moving iron core drives the push rod 31 to move a third distance from the initial position, the push rod 31 drives the first contact assembly 1 and the second contact assembly 2 to be turned on at the same time, and the third distance is greater than the first distance and smaller than the third distance.

[0087] In the above embodiment, the push rod 31 is driven to move different distances by the coil and the moving iron core, thereby controlling the on and off of the first contact assembly 1 and the second contact assembly 2 respectively.

[0088] Reference Figure 1 In some embodiments, the first contact assembly 1 includes a first moving portion 12 and at least two first wiring portions 11. The first wiring portion 11 is disposed on the housing 4 of the relay, and one side extends out of the housing 4 to connect the first circuit. The first moving portion 12 is connected to the push rod 31, and the first moving portion 12 is driven by the push rod 31 to contact or separate from each first wiring portion 11 at the same time.

[0089] As an example, at least two first wiring parts 11 are respectively connected to the two breakpoints of the first loop, and the first moving part 12 is used as a conductor. When the first wiring part 11 and the first moving part 12 are in contact at the same time, the two breakpoints of the first loop are connected through the first moving part 12. When the first wiring part 11 is separated from the first moving part 12, the two breakpoints of the first loop cannot be connected, and the first loop is disconnected.

[0090] Reference Figure 2 , 3 In the first embodiment of the first wiring portion 11, the first wiring portion 11 includes a first static wiring terminal 111, a first contact 112, a first flexible connector 113 and a first spring 114. One side of the first static wiring terminal 111 extends out of the housing 4, and the other side is connected to the first flexible connector 113 in the housing 4. One end of the first spring 114 is connected to the housing 4, and the other end is wound around the outside of the first contact 112 to apply elastic force to the first contact 112 to move the first contact 112 closer to the first moving portion 12. The first contact 112 is connected to the first flexible connector 113, and the first contact 112 is arranged opposite to the first moving portion 12 when the first spring 114 is in a natural state.

[0091] The natural state may be a state in which the first spring 114 has not accumulated elastic potential energy, at which time the coil is not energized and does not drive the moving iron core and the push rod 31 to move.

[0092] Reference Figure 4 As an example, the first static terminal 111 extends out of the housing 4 for connecting to the breakpoint of the first circuit. The first static terminal 111, the first contact piece 112 and the first flexible connector 113 are all made of conductive materials, so that the first circuit is conductive through the static terminal, the first contact piece 112 and the first flexible connector 113.

[0093] Reference Figure 2 , 3 In the first embodiment of the first moving part 12, the first moving part 12 includes a first moving contact end 121 and an abutting member 122. The abutting member 122 and the first moving contact end 121 are sequentially arranged on the push rod 31, and move along the axis direction of the push rod 31 with the push rod 31. The first moving contact end 121 is arranged opposite to the first contact member 112. An inclined surface 1221 is provided on the abutting member 122. When the abutting member 122 moves close to the first contact member 112, the inclined surface 1221 abuts against the first contact member 112 to push the first contact member 112, so that the first contact member 112 slides on the first moving contact end 121 until the first contact member 112 is separated from the first moving contact end 121.

[0094] Reference Figure 5 and Figure 6 In the first embodiment of the first moving part 12, the first moving part 12 further includes a bracket 123 and a plurality of stoppers 124. The bracket 123 is inserted into the push rod 31 and moves along the axis direction of the push rod 31 with the push rod 31. The stoppers 124 are arranged on the bracket 123 and located outside the first moving contact end 121, and are used to stop the first contact 112 after the first contact 112 is separated from the first moving contact end 121.

[0095] Reference Figure 5 and Figure 6 As an example, the first contact member 112 includes a blocking plate 1121 and a contact plate 1122, the blocking plate 1121 and the contact plate 1122 are connected to form a cross-shaped first contact member 112, and the contact plate 1122 is arranged opposite to the first moving contact end 121. Fig.10 and Fig.11 The length of the blocking plate 1121 is greater than the distance between the two limiting members 124 , so that the limiting member 124 can abut against the blocking plate 1121 , so that the resistance contact plate 1122 contacts the first moving contact end 121 .

[0096] As an example, a contact block 1211 is further provided on the first moving contact end 121 , and the contact block 1211 cooperates with the contact plate 1122 .

[0097] As an example, the stopper 124 includes a first column 1241, a second column 1242 and a second spring 1243. The first column 1241 is connected to the bracket 123, one end of the second column 1242 is open and sleeved on the first column 1241, and one end of the second spring 1243 is connected to the bracket 123 and the other end is connected to the second column 1242.

[0098] Reference Figure 5 and Figure 6 In the first embodiment of the first movable part 12, the first movable part 12 also includes a third spring 125 mounted on the push rod 31, one end of the third spring 125 is connected to the bracket 123, and the other end is connected to the abutment 122, for applying an elastic force along the axial direction of the push rod 31 to the bracket 123.

[0099] In the above embodiment, the first moving contact end 121, the first abutment member 122 and the bracket 123 are all sleeved on the push rod 31 and move with the push rod 31, so that the push rod 31 drives the first moving contact end 121 to directly contact the first contact member 112 to conduct the first circuit. As the push rod 31 moves, the inclined surface 1221 of the abutment member 122 pushes the first contact member 112 to slide off the first moving contact end 121, and the second column 1242 pops out to both sides of the first contact member 112 under the elastic force of the second spring 1243, limiting the first contact member 112 and preventing the first contact member 112 from moving in the direction close to the first moving contact end 121, thereby achieving the disconnection of the first circuit.

[0100] Reference Figure 12-Figure 15In the second embodiment of the first wiring portion 11, the first wiring portion 11 includes a second static wiring terminal 115, a second contact 116, a second flexible connector 117 and a fourth spring 118. One side of the second static wiring terminal 115 extends out of the housing 4, and the other side is connected to the second flexible connector 117 in the housing 4. The second contact 116 is connected to the second flexible connector 117, and the second contact 116 is bent at one side close to the first wiring portion 11 to form a bending surface 1161, and the bending surface 1161 is arranged opposite to the first wiring portion 11. One end of the fourth spring 118 is connected to the housing 4, and the other end is wound around the outside of the second contact 116, so as to apply elastic force to the second contact 116 to drive the second contact 116 to move close to the first moving portion 12.

[0101] In the second embodiment of the first moving part 12, the first moving part 12 includes an insulating member 126 and a second moving contact terminal 127. The insulating member 126 and the second moving contact terminal 127 are sequentially sleeved on the push rod 31, and move along the axis direction of the push rod 31 with the push rod 31. Both sides of the second moving contact terminal 127 are bent in directions parallel to the bending surface 1161 to form a conductor contact surface 1271 arranged opposite to the bending surface 1161. The second moving contact terminal 127 extends from both sides of the insulating member 126 to form an insulating contact surface 1261 matched with the bending surface 1161.

[0102] In the above embodiment, the insulating member 126 and the second movable contact terminal 127 are sleeved on the push rod 31 and move with the push rod 31, so that the push rod 31 drives the second movable contact terminal 127 to directly contact the second contact member 116 to conduct the first circuit. With the movement of the push rod 31, the insulating member 126 and the second movable contact terminal 127 continue to move upward until the insulating contact surface 1261 of the insulating member 126 contacts the second contact member 116, thereby realizing the disconnection of the first circuit.

[0103] Reference Figure 1 and Figure 4 In some embodiments, the second contact assembly 2 includes a second moving portion 21 and at least two second wiring portions 22. The second wiring portion 22 is disposed on the housing 4 of the relay, and one side extends out of the housing 4 to connect the second circuit. The second moving portion 21 is connected to the push rod 31, and the second moving portion 21 is driven by the push rod 31 to contact or separate from each second wiring portion 22 at the same time.

[0104] In some embodiments, the second wiring portion 22 includes a wiring post 221 , one end of the wiring post 221 extends out of the housing 4 , and the other end is disposed in the housing 4 opposite to the second moving portion 21 .

[0105] Reference Figure 4As an example, the terminal 221 extends out of the housing 4 to connect to the breakpoint of the second circuit. The terminal 221 and the third moving contact terminal 211 are made of conductive materials so that the second circuit is conducted through the terminal 221 and the third moving contact terminal 211.

[0106] In some embodiments, the second moving part 21 includes a third moving contact terminal 211 and a mounting bracket 212. The third moving contact terminal 211 and the mounting bracket 212 are sleeved on the push rod 31 and move along the axis direction of the push rod 31 with the push rod 31. A fixing hole 2121 for the third moving contact terminal 211 to pass through is opened on the mounting bracket 212 in a direction perpendicular to the push rod 31, and both ends of the third moving contact terminal 211 are respectively arranged opposite to the terminal 221 after passing through the fixing hole 2121.

[0107] In the above embodiment, the third moving contact terminal 211 is usually connected to the mounting bracket 212 by passing through the fixing hole 2121, thereby avoiding relative movement between the third moving contact terminal 211 and the mounting bracket 212, so that the mounting bracket 212 can stably drive the third moving contact terminal 211 to move.

[0108] In some embodiments, the second moving part 21 further includes a fifth spring 213. The fifth spring 213 is elastically sleeved on the push rod 31, one end of the fifth spring 213 is connected to the push rod 31, and the other end is connected to the mounting bracket 212 to apply elastic force along the direction of the push rod 31 to the mounting bracket 212.

[0109] As an example, the fifth spring 213 applies an elastic force along the direction of the push rod 31 to the mounting bracket 212 , so that the mounting bracket 212 drives the third movable contact terminal 211 to be in close contact with the terminal post 221 .

[0110] Reference Figure 1-Figure 11 The present disclosure exemplarily describes the working process of the relay applied to battery charging and discharging control, taking the movement direction of the push rod 31 as vertically upward as an example.

[0111] First, combine Figure 4 , respectively connect the two breakpoints in the first circuit to one end of the first static terminal 111 extending out of the relay housing 4, and respectively connect the two breakpoints in the second circuit to one end of the terminal 221 extending out of the relay housing 4.

[0112] Combination Figure 1 , 2, illustrates the state of the relay when both the first circuit and the second circuit are disconnected, at which time the coil is not energized, the first contact 112 is located above the first moving contact terminal 121, and they are separated from each other. The terminal 221 is located above the third moving contact terminal and they are separated from each other. In this state, the distance between the first contact 112 and the first moving contact terminal 121 is smaller than the distance between the terminal 221 and the third moving contact terminal.

[0113] Combination Figure 5 and Figure 6 , input current into the coil to drive the moving iron core to move vertically upward, the moving iron core and the push rod 31 are fixedly connected, thereby driving the push rod 31 to move upward, so that the bracket 123 and the mounting bracket 212 move vertically upward at the same time, after the push rod 31 moves a first distance, the first contact piece 112 and the first moving contact end 121 are in contact, so that the first circuit is connected. At this time, the first contact piece 112 abuts against the second column 1242, so that the second spring 1243 is in a compressed state. In this process, the terminal 221 is located at the third moving contact end and separated from each other, so that the first circuit is turned on and the second circuit is disconnected.

[0114] Combination Figure 7 and Figure 8 , the current of the control input coil continues to increase, so that the moving iron core drives the first push rod 31 to continue to move vertically upward, and the first moving contact end 121 is blocked by the first contact member 112 and cannot continue to move upward, but because the push rod 31 is still moving upward, the third spring 125 is compressed to store energy. Since the first contact member 112 can only move in a direction perpendicular to the push rod 31, that is, horizontal movement, the push rod 31 drives the abutment member 122 to move upward during the upward movement of the push rod 31, so that the inclined surface 1221 of the abutment member 122 contacts the first contact member 112, and then pushes the first contact member 112 to move in the horizontal direction. At this time, the first contact member 112 slides on the first moving contact end 121 but does not separate from the first moving contact end 121.

[0115] As the push rod 31 continues to move upward, the push rod 31 drives the mounting frame 212 and the third moving contact terminal 211 to move upward until the third moving contact terminal 211 contacts the terminal 221, thereby connecting the second circuit. At this time, the push rod 31 moves upward a third distance from the initial position, and both the first circuit and the second circuit are connected.

[0116] Combination Figure 9-11When the push rod 31 moves upward from the initial position by a second distance, the abutment member 122 continues to move upward until the first contact member 112 is separated from the inclined surface 1221 of the abutment member 122. Under the elastic force of the third spring 125, the bracket 123 and the first moving contact end 121 pop up and separate from the first contact member 112, and the first circuit is disconnected. In this process, since the third moving contact terminal 211 is in contact with the terminal 221, and the push rod 31 drives the fifth spring 213 to compress, the fifth spring 213 applies pressure to the third moving contact terminal 211, so that there is pressure between the third moving contact terminal 211 and the terminal 221 and they are tightly abutted, thereby achieving the disconnection of the first circuit and the conduction of the second circuit.

[0117] When it is necessary to control the disconnection of both the first circuit and the second circuit, the control coil is de-energized, the moving iron core drives the push rod 31 to move vertically downward, and the first moving contact end 121 and the third moving contact terminal 211 move downward with the push rod 31, so that the third moving contact terminal 211 is separated from the terminal 221. At this time, the first contact piece 112 is limited by the limiting piece 124, and the resistance first contact piece 112 moves toward the direction close to the first moving contact end 121, so that the first moving contact end 121 does not contact the first moving contact end 121 during the downward movement, so that the first circuit is in a disconnected state, thereby realizing the disconnection of the first circuit and the second circuit.

[0118] According to a second aspect of the present application, a relay control method is provided. Based on the above-mentioned relay, the method includes step S101 and step S102, which are described in detail below.

[0119] Step S101: a first current signal is input to the driving component 3, so that the driving component 3 drives the first contact component 1 to be turned on and the second contact component 2 to be turned off.

[0120] Step S102: a second current signal is supplied to the driving component 3, so that the driving component 3 drives the first contact component 1 to be disconnected and the second contact component 2 to be connected.

[0121] The amplitude of the second current signal is greater than the amplitude of the first current signal.

[0122] In some embodiments, the relay is used to control the battery charging and discharging system, the first circuit is a pre-charging circuit, the second circuit is a main circuit, and the method also includes steps S201 and S202, which are described in detail below.

[0123] Step S201: receiving a charging request, and transmitting a first current signal to the driving component 3 according to the charging request, so that the driving component 3 drives the first contact component 1 to be turned on and the second contact component 2 to be turned off, so that the pre-charging circuit is turned on and the main circuit is turned off.

[0124] Step S202: Receive a pre-charging completion instruction, and based on the pre-charging completion instruction, pass a second current signal to the driving component 3, so that the driving component 3 drives the first contact component 1 to disconnect and the second contact component 2 to connect, so that the pre-charging circuit is disconnected and the main circuit is connected.

[0125] As an example, after receiving a charging request, the main negative relay in the battery charging and discharging system is closed first, and then the first contact assembly 1 is controlled to be turned on, the second contact assembly 2 is disconnected, and the pre-charging circuit is turned on to enter the pre-charging stage. When the capacitor voltage value on the load side is close to the battery voltage, the pre-charging is determined to be completed, and a pre-charging completion instruction is output. The first contact assembly 1 is controlled to be disconnected and the second contact assembly 2 is controlled to be turned on through the second current signal to turn on the main circuit. In the process from the pre-charging circuit to the main circuit, there will be a short state where the pre-charging circuit and the main circuit are turned on at the same time, so as to avoid the poor pre-charging effect caused by the disconnection of the pre-charging circuit when the main circuit is not turned on.

[0126] According to a third aspect of the present application, there is provided a controller having a computer program stored thereon, wherein the computer program implements the steps of the above method when executed by a processor.

[0127] According to a fourth aspect of the present application, a charge and discharge control system is provided, characterized in that it includes the above-mentioned controller or the above-mentioned relay.

[0128] According to a fifth aspect of the present application, a vehicle is provided, characterized in that it includes a charge and discharge control system as described above.

[0129] The vehicle may be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and the present disclosure does not make any specific limitation on this.

[0130] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0131] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0132] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0133] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A relay, characterized in that: include: A first contact assembly (1), used to be connected in series with the first circuit; A second contact assembly (2), used for being connected in series with the second circuit; A driving component (3) is connected to the first contact component (1) and the second contact component (2), and is used to drive the first contact component (1) and the second contact component (2) respectively, so that the first contact component (1) controls the on and off of the first circuit, and the second contact component (2) controls the on and off of the second circuit.

2. The relay according to claim 1, characterized in that: The driving assembly (3) comprises a moving iron core, a coil and a push rod (31); The moving iron core is coaxially arranged with the coil and reciprocates along with the magnetic field generated by the coil; The push rod (31) is connected to the moving iron core, the first contact assembly (1) and the second contact assembly (2), and is used to drive the first contact assembly (1) and the second contact assembly (2) to move under the drive of the moving iron core.

3. The relay according to claim 2, characterized in that: When the moving iron core drives the push rod (31) to move a first distance from the initial position, the push rod (31) drives the first contact assembly (1) to be turned on and the second contact assembly (2) to be turned off; When the moving iron core drives the push rod (31) to move a second distance from the initial position, the push rod (31) drives the first contact assembly (1) to be disconnected and the second contact assembly (2) to be connected.

4. The relay according to claim 2, characterized in that: The first contact assembly (1) comprises a first moving portion (12) and at least two first wiring portions (11); The first wiring portion (11) is arranged on a housing (4) of the relay, and one side of the first wiring portion extends out of the housing (4) to connect to the first circuit; The first moving part (12) is connected to the push rod (31), and the first moving part (12) is driven by the push rod (31) to contact or separate from each of the first connecting parts (11) at the same time.

5. The relay according to claim 4, characterized in that: The first wiring portion (11) comprises a first static wiring terminal (111), a first contact piece (112), a first flexible connection piece (113) and a first spring (114); One side of the first static connection terminal (111) extends out of the housing (4), and the other side is connected to the first flexible connection piece (113) inside the housing (4); One end of the first spring (114) is connected to the housing (4), and the other end is wound around the outside of the first contact piece (112) to apply elastic force to the first contact piece (112) so that the first contact piece (112) moves closer to the first moving part (12); the first contact piece (112) is connected to the first soft connector (113).

6. The relay according to claim 5, characterized in that: The first moving part (12) comprises a first moving contact end (121) and an abutment member (122); The abutment member (122) and the first movable contact end (121) are sequentially inserted into the push rod (31), and move along the axis direction of the push rod (31) along with the push rod (31); The first moving contact end (121) is arranged opposite to the first contact piece (112); an inclined surface (1221) is provided on the abutting piece (122); when the abutting piece (122) moves close to the first contact piece (112), the inclined surface (1221) abuts against the first contact piece (112) to push the first contact piece (112).

7. The relay according to claim 6, characterized in that: The first moving part (12) further comprises a bracket (123) and a plurality of stoppers (124); the bracket (123) is disposed on the push rod (31) and moves along the axis direction of the push rod (31) along with the push rod (31); The limiting member (124) is arranged on the bracket (123) and is located outside the first moving contact end (121), and is used to limit the first contact member (112) after the first contact member (112) is separated from the first moving contact end (121).

8. The relay according to claim 7, characterized in that: The limiting member (124) comprises a first column (1241), a second column (1242) and a second spring (1243); The first column (1241) is connected to the bracket (123), one end of the second column (1242) is open and sleeved on the first column (1241), one end of the second spring (1243) is connected to the bracket (123), and the other end is connected to the second column (1242).

9. The relay according to claim 8, characterized in that: The first moving part (12) further comprises a third spring (125) sleeved on the push rod (31), one end of the third spring (125) being connected to the bracket (123) and the other end being connected to the abutment member (122), and being used for applying an elastic force along the axis direction of the push rod (31) to the bracket (123).

10. The relay according to claim 4, characterized in that: The first wiring portion (11) comprises a second static wiring terminal (115), a second contact piece (116), a second flexible connection piece (117) and a fourth spring (118); One side of the second static connection terminal (115) extends out of the housing (4), and the other side is connected to the second flexible connection piece (117) inside the housing (4); The second contact member (116) is connected to the second flexible connector (117); a side of the second contact member (116) close to the first wiring portion (11) is bent to form a bent surface (1161); the bent surface (1161) is arranged opposite to the first wiring portion (11); One end of the fourth spring (118) is connected to the housing (4), and the other end is wound around the outside of the second contact piece (116) to apply elastic force to the second contact piece (116) to drive the second contact piece (116) to move closer to the first moving part (12).

11. The relay according to claim 10, characterized in that: The first moving part (12) comprises an insulating member (126) and a second moving contact terminal (127); The insulating member (126) and the second movable contact terminal (127) are sequentially sleeved on the push rod (31), and move along the axis direction of the push rod (31) along with the push rod (31); The two sides of the second moving contact terminal (127) are respectively bent in directions parallel to the bending surface (1161) to form a conductor contact surface (1271) arranged opposite to the bending surface (1161); the second moving contact terminal (127) is extended from the two sides of the insulating member (126) to form an insulating contact surface (1261) matching the bending surface (1161).

12. The relay according to claim 2, characterized in that: The second contact assembly (2) comprises a second moving portion (21) and at least two second wiring portions (22); The second wiring portion (22) is arranged on the housing (4) of the relay, and one side of the second wiring portion extends out of the housing (4) to connect to the second circuit; The second moving part (21) is connected to the push rod (31), and driven by the push rod (31), the second moving part (21) is in contact with or separated from each of the second connecting parts (22) at the same time.

13. The relay according to claim 12, characterized in that: The second wiring portion (22) comprises a wiring post (221), one end of the wiring post (221) extends out of the housing (4), and the other end is arranged inside the housing (4) opposite to the second movable portion (21).

14. The relay according to claim 13, characterized in that: The second moving part (21) comprises a third moving contact terminal (211) and a mounting frame (212); The third moving contact terminal (211) and the mounting frame (212) are sleeved on the push rod (31) and move along the axis direction of the push rod (31) with the push rod (31); A fixing hole (2121) for the third moving contact terminal (211) to pass through is provided on the mounting frame (212) in a direction perpendicular to the push rod (31); and two ends of the third moving contact terminal (211) are respectively arranged opposite to the terminal post (221) after passing through the fixing hole (2121).

15. The relay according to claim 14, characterized in that: The second moving part (21) further includes a fifth spring (213); The fifth spring (213) is elastically sleeved on the push rod (31), one end of the fifth spring (213) is connected to the push rod (31), and the other end is connected to the mounting frame (212) so as to apply an elastic force along the direction of the push rod (31) to the mounting frame (212).

16. A relay control method, characterized in that: Based on the relay according to any one of claims 1 to 15, the method comprises: A first current signal is supplied to the driving component (3), so that the driving component (3) drives the first contact component (1) to be turned on and the second contact component (2) to be turned off; A second current signal is supplied to the driving component (3), so that the driving component (3) drives the first contact component (1) to be disconnected and the second contact component (2) to be connected; Wherein, the amplitude of the second current signal is greater than the amplitude of the first current signal.

17. The relay control method according to claim 16, wherein the relay is applied to battery charge and discharge control, the first circuit is a pre-charge circuit, and the second circuit is a main circuit, characterized in that: The method further comprises: receiving a charging request, and transmitting a first current signal to the driving component (3) according to the charging request, so that the driving component (3) drives the first contact component (1) to be turned on and the second contact component (2) to be turned off, so that the pre-charging circuit is turned on and the main circuit is turned off; A pre-charging completion instruction is received, and based on the pre-charging completion instruction, a second current signal is passed to the driving component (3), so that the driving component (3) drives the first contact component (1) to be disconnected and the second contact component (2) to be connected, so that the pre-charging circuit is disconnected and the main circuit is connected.

18. A controller having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 16 to 17 are implemented.

19. A charge and discharge control system, characterized in that: Comprising the controller according to claim 18 or the relay according to any one of claims 1 to 15.

20. A vehicle, characterized in that: Includes the charge and discharge control system as claimed in claim 19.

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