CN218568692U - Contactor, energy storage system, fill electric pile and vehicle - Google Patents

Abstract

The application provides a contactor, an energy storage system, a charging pile and a vehicle, wherein the contactor comprises an arc extinguishing magnet structure, the arc extinguishing magnet structure is provided with a first side and a second side which are opposite, the first side is a magnetic field strengthening side of the arc extinguishing magnet structure, and the second side is a magnetic field weakening side of the arc extinguishing magnet structure; a contact assembly is arranged on the first side of the arc extinguishing magnet structure and comprises a moving contact and a fixed contact which are oppositely arranged; the arc extinguishing magnet structure is configured to move an arc generated between the moving contact and the stationary contact out of between the moving contact and the stationary contact. The contactor can improve the arc extinguishing effect under the condition of meeting the miniaturization requirement of the contactor.

Description

Contactor, energy storage system, fill electric pile and vehicle

Technical Field

The embodiment of the application relates to contactor technical field, especially relates to a contactor, energy storage system, fills electric pile and vehicle.

Background

The contactor is a common electrical switch, is widely applied to industrial equipment, electric vehicles, charging piles and other equipment, and has the working principle of realizing the switching of a circuit by controlling the on and off of a fixed contact and a movable contact.

When the contactor is used, electric arcs can be generated between the moving contact and the static contact at the moment of contact and separation of the moving contact and the static contact of the contactor, the instantaneous temperature of the electric arcs can reach more than one thousand ℃, internal parts of the contactor are easily damaged, for example, the inner wall of an arc extinguish chamber is burnt, and even the static contact or the moving contact is burnt, so that the service life of the contactor is influenced. In the related art, the arc extinguishing modes include magnetic quenching, slit quenching, arc extinguishing grid quenching, multi-break arc extinguishing and the like.

The magnetic quenching utilizes the action of magnetic field to make the electric arc produce movement, and the electric arc can be quickly cooled so as to quench the electric arc. However, in the related art, the contactor for arc extinction by magnetic quenching has a poor arc extinction effect when the contactor meets the miniaturization requirement.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a contactor, energy storage system, fills electric pile and vehicle for the contactor that adopts the mode of magnetic quenching to carry out the arc extinguishing is satisfying under the condition that the miniaturization required, and its arc extinguishing effect is not good technical problem is solved.

The embodiment of the present application provides the following technical solutions for solving the above technical problems:

in a first aspect, an embodiment of the present application provides a contactor, including an arc extinguishing magnet structure, where the arc extinguishing magnet structure has a first side and a second side opposite to each other, where the first side is a magnetic field enhancing side of the arc extinguishing magnet structure, and the second side is a magnetic field weakening side of the arc extinguishing magnet structure;

a contact assembly is arranged on the first side of the arc extinguishing magnet structure and comprises a moving contact and a fixed contact which are oppositely arranged;

the arc extinguishing magnet structure is configured to move an arc generated between the moving contact and the stationary contact away from between the moving contact and the stationary contact.

The beneficial effects of the embodiment of the application are as follows: the contactor that this application embodiment provided is including being used for carrying out the arc extinguishing magnet structure of arc extinguishing to the electric arc that contact subassembly produced, arc extinguishing magnet group has relative magnetic field and strengthens the side and the magnetic field weakens the side, under the circumstances that adopts equivalent magnet unit, compare in the permanent magnet unit that is used for the contactor arc extinguishing among the correlation technique, the magnetic field of the arc extinguishing magnet structure that this application embodiment provided is strengthened the side is showing and is strengthened, the lorentz force that the electric arc that makes contact subassembly produce received is showing and is increasing from this, and then make the contactor can effectual breaking electric arc, thereby make the contactor that this application embodiment provided under the circumstances that satisfies the miniaturized requirement of contactor, can improve arc extinguishing effect.

In a possible embodiment, the quenching magnet structure is a linear structure;

the number of the arc extinguishing magnet structures is at least two, all the arc extinguishing magnet structures are divided into two groups, the magnetic field strengthening sides of the arc extinguishing magnet structures in each group are located on the same side, and the magnetic field strengthening sides of the two groups of arc extinguishing magnet structures are opposite.

In a possible embodiment, the number of the quenching magnet structures is two, and each of the two quenching magnet structures comprises three magnet units arranged in sequence along a first straight line direction;

in the same said quenching magnet structure: the two magnet units positioned at the two ends have opposite pointing directions and are parallel to the first straight line direction, and the pointing direction of the magnet unit positioned in the middle is vertical to the first straight line direction; the orientation of the magnet unit is the direction that the S pole of the magnet unit points to the N pole;

the number of the contact assemblies is two, the two contact assemblies are respectively positioned on the magnetic field enhancement sides of the two arc extinguishing magnet structures, and each contact assembly is opposite to the magnet unit positioned in the middle.

In a possible embodiment, in the same quenching magnet structure:

two S poles of the two magnet units positioned at two ends are close to the magnet unit positioned in the middle;

the S pole of the magnet unit located in the middle is close to the magnetic field enhancing side of the blowout magnet structure.

In a possible embodiment, the number of the arc extinguishing magnet structures is two, and each of the two arc extinguishing magnet structures comprises a first magnet unit, a second magnet unit, a third magnet unit, a fourth magnet unit and a fifth magnet unit which are sequentially arranged along a second linear direction;

in the same said quenching magnet structure: the pointing directions of the first magnet unit and the fifth magnet unit are the same and are parallel to the second linear direction, the pointing directions of the second magnet unit and the fourth magnet unit are opposite and are perpendicular to the second linear direction, and the pointing direction of the third magnet unit is opposite to the pointing direction of the first magnet unit; the orientation of the magnet unit is the direction that the S pole of the magnet unit points to the N pole;

the number of the contact assemblies is four, every two contact assemblies are in one group, and the moving contacts of the two contact assemblies in each group are conducted through the conductive bridge;

in the two groups of contact assemblies, one of the two groups of contact assemblies is respectively positioned on the magnetic field enhancement sides of the two arc extinguishing magnet structures and is respectively opposite to the second magnet units of the two arc extinguishing magnet structures, and the other group of two contact assemblies is respectively positioned on the magnetic field enhancement sides of the two arc extinguishing magnet structures and is respectively opposite to the fourth magnet units of the two arc extinguishing magnet structures.

In a possible embodiment, in the same quenching magnet structure: the S pole of the first magnet unit is close to the second magnet unit; the S pole of the second magnet unit is close to the magnetic field enhancement side of the blowout magnet structure.

In a possible embodiment, the number of quenching magnet structures is one, the quenching magnet structures comprising an annular fixed frame, and a plurality of magnet units arranged on the annular fixed frame.

In a possible embodiment, the number of the magnet units is eight, the annular fixing frame is a circular frame, and the eight magnet units are uniformly arranged on the circular frame;

in any two adjacent magnet units along the circumferential direction of the circular frame, the included angle between the pointing directions of the two magnet units is 45 degrees or 135 degrees.

In a possible embodiment, the eight magnet units are respectively a first magnet unit to an eighth magnet unit along the circumferential direction of the circular frame, wherein the first magnet unit and the fifth magnet unit are symmetrical relative to the center of the circular frame, and the first magnet unit and the fifth magnet unit are both directed to the center of the circular frame along the radial direction of the circular frame;

the number of the contact assemblies is four, and every two contact assemblies form a group; the moving contacts of the two contact assemblies in each group are conducted through the conductive bridge; in the two groups of contact assemblies, two contact assemblies in one group are respectively opposite to the first magnet unit and the seventh magnet unit, and two contact assemblies in the other group are respectively opposite to the third magnet unit and the fifth magnet unit.

In a possible embodiment, the contactor further comprises a plurality of arc chute plate assemblies, the plurality of arc chute plate assemblies correspond to the plurality of contact assemblies one by one, and the arc chute plate assemblies are positioned beside the contact assemblies in the corresponding arc chute plate assemblies and the corresponding contact assemblies;

the static contact of each contact component comprises a static contact and an arc striking plate arranged around the static contact, and the arc striking plate is configured to be matched with the arc extinguishing magnet structure to introduce electric arcs generated between the dynamic contact and the static contact into the arc extinguishing grid plate component.

In a possible embodiment, the arc chute plate assembly comprises two fixing frames which are arranged at intervals and oppositely, and a plurality of arc extinguishing plates which are arranged at intervals are arranged in each of the two fixing frames;

the two fixing frames are arranged beside the contact assembly and are respectively positioned in a starting area and an ending area of the moving direction of the electric arc generated between the moving contact and the fixed contact.

In a second aspect, embodiments of the present application provide an energy storage system, which includes a contactor according to any one of the above aspects.

The beneficial effect of the energy storage system that this application embodiment provided is the same with the beneficial effect of above-mentioned contactor, and no longer gives unnecessary details here.

In a third aspect, an embodiment of the present application provides a charging pile, including the contactor according to any one of the above aspects.

The beneficial effect that fills electric pile that this application embodiment provided is the same with the beneficial effect of above-mentioned contactor, no longer gives unnecessary details here.

In a possible implementation manner, the charging pile further comprises an alternating current to direct current power supply module, a direct current voltage conversion module, a current divider and a charging gun which are connected in sequence;

the number of the contactors is a plurality of, one of the contactors is connected between the shunt and the charging gun, and the rest of the contactors are connected between the direct-current voltage conversion module and the shunt.

In a fourth aspect, an embodiment of the present application provides a vehicle, which includes a charging port, a battery module, and a contactor connected between the charging port and the battery module, where the contactor is the contactor according to any one of the above aspects.

The beneficial effect of the vehicle that this application embodiment provided is the same with the beneficial effect of above-mentioned contactor, and no longer gives unnecessary details here.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and, together with the description, serve to explain the principles of the application.

FIG. 1 is a perspective view of a portion of a contactor according to an embodiment of the present disclosure;

FIG. 2 is a perspective view of a portion of a contactor according to an embodiment of the present application;

FIG. 3 is a perspective view of a portion of a contactor according to another embodiment of the present application;

FIG. 4 is a schematic diagram of one embodiment of a quenching magnet structure in a contactor according to the present disclosure;

FIG. 5 is a schematic diagram of the contactor of FIG. 4 for reversing the direction of current flow;

FIG. 6 is a schematic diagram of another arrangement of a quenching magnet arrangement in a contactor according to an embodiment of the present application;

FIG. 7 is a schematic diagram of the contactor of FIG. 6 for reversing the direction of current flow;

FIG. 8 is a schematic diagram of another arrangement of a quenching magnet arrangement in a contactor according to an embodiment of the present application;

FIG. 9 is a schematic diagram of the contactor of FIG. 8 for reversing the direction of current flow;

FIG. 10 is a schematic diagram of an alternative arrangement of a quenching magnet arrangement in a contactor according to an embodiment of the present application;

fig. 11 is a schematic view of the contactor of fig. 10 for reversing the direction of current flow;

FIG. 12 is a schematic diagram of a contactor having a four switching magnet configuration according to an embodiment of the present application;

FIG. 13 is a schematic view of an alternative configuration of a quenching magnet configuration in a contactor according to embodiments of the subject application;

FIG. 14 is a schematic diagram of the contactor of FIG. 13 for reversing the direction of current flow;

FIG. 15 is a schematic view of an alternative configuration of a quenching magnet configuration in a contactor according to embodiments of the subject application;

FIG. 16 is a schematic diagram of the contactor of FIG. 15 for reversing the direction of current flow;

FIG. 17 is a schematic diagram of an energy storage system;

FIG. 18 is a schematic diagram of an exemplary charging post;

fig. 19 is a schematic view of a structure of a vehicle.

Description of reference numerals:

10. an energy storage system;

11. a battery module; 12. a direct current molded case circuit breaker; 13. a contactor; 14. a DC-DC module;

20. charging piles;

21. an AC-DC module; 22. a set of contacts; 23. a flow divider; 24. a charging gun;

30. a vehicle;

31. a charging port; 32. a fuse;

11. a contactor;

110. an arc extinguishing magnet structure; 120. an arc chute plate assembly;

111. a magnet unit;

1111. a first magnet unit; 1112. a second magnet unit; 1113. a third magnet unit; 1114. a fourth magnet unit; 1115. a fifth magnet unit; 1116. a sixth magnet unit; 1117. a seventh magnet unit; 1118. an eighth magnet unit;

200. a contact assembly;

300. a conductive bridge;

400. an annular fixed frame;

500. and (4) mounting the frame.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

The magnetic quenching utilizes the action of magnetic field to make the electric arc produce movement, and the electric arc can be quickly cooled so as to quench the electric arc. However, in the related art, the contactor that adopts the mode of magnetic quenching to carry out the arc extinguishing is in order to satisfy miniaturized requirement for the magnetic field intensity of the permanent magnet that is used for the arc extinguishing that establishes in it is limited, and then makes the lorentz force that the electric arc that the contactor produced receives limited, thereby makes the contactor can not effectual disjunction electric arc, and then makes the arc extinguishing effect of contactor not good.

In view of this, the present embodiment of the application increases the lorentz force applied to the arc generated by the contactor by using the arc extinguishing magnet structure having the magnetic field enhancing side, so that the contactor effectively breaks the arc, and the arc extinguishing effect of the contactor is improved.

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

As shown in fig. 1, 2 and 3, the contactor according to the present embodiment includes a blowout magnet structure 110 and a contact assembly 200, the blowout magnet structure 110 having a first side and a second side opposite to each other, the first side being a magnetic field enhancing side of the blowout magnet structure 110, and the second side being a magnetic field reducing side of the blowout magnet structure 110.

The contact assembly 200 includes a moving contact and a stationary contact which are arranged oppositely, the moving contact can move towards a direction close to the stationary contact to contact with the stationary contact, so that the moving contact and the stationary contact are connected, or move towards a direction far away from the stationary contact to be separated from the stationary contact, so that the moving contact and the stationary contact are disconnected, an electric arc can be generated between the moving contact and the stationary contact in the process of connection and disconnection, and the electric arc can burn the stationary contact and the moving contact, so that the service lives of the stationary contact and the moving contact are shortened. In the embodiment of the present application, the contact assembly 200 is disposed on the first side of the blowout magnet structure 110, that is, the contact assembly 200 is disposed on the magnetic field enhancement side of the blowout magnet structure 110, and the blowout magnet structure 110 is configured to move the arc generated between the moving contact and the stationary contact out of between the moving contact and the stationary contact, so as to reduce the damage of the arc generated between the moving contact and the stationary contact to the stationary contact and the moving contact.

In the correlation technique, in order to satisfy the miniaturized requirement of contactor, the volume that is used for the permanent magnet of arc extinguishing that adopts the mode of magnetic quenching to carry out the interior setting of contactor of arc extinguishing is limited, and magnetic field intensity is limited for the lorentz force that the electric arc that produces between moving contact and the static contact received is limited, thereby makes the contactor can not effectual disconnected electric arc, and then makes the arc extinguishing effect of contactor not good. In the contactor that this application embodiment provided, contact assembly 200 sets up in the magnetic field reinforcing side of blowout magnet structure 110, under the condition that adopts equivalent magnet unit, compare in the permanent magnet that is used for the contactor arc extinguishing among the correlation technique, the magnetic field of the magnetic field reinforcing side of blowout magnet structure 110 is showing the reinforcing, the lorentz force that the electric arc that makes contact assembly 200 produce received from this is showing and is increasing, and then make the contactor can effectual disconnected electric arc, thereby make the contactor that this application embodiment provided satisfy under the miniaturized circumstances of requirement of contactor, can improve the arc extinguishing effect of contactor, and then reduce the electric arc that produces between moving contact and the static contact and harm static contact and moving contact, the life of contactor has been increased.

With continued reference to fig. 1, fig. 2 and fig. 3, the quenching magnet structure 110 of the contactor according to the embodiment of the present invention may be a linear structure or a ring structure, and the quenching magnet structure 110 of the linear structure and the quenching magnet structure 110 of the ring structure are described below separately.

Referring to fig. 4, fig. 8 and fig. 12, in some embodiments of the present application, the quenching magnet structures 110 are linear structures, the number of the quenching magnet structures 110 is at least two, all the quenching magnet structures 110 are divided into two groups, the magnetic field enhancing sides of the quenching magnet structures 110 in each group are located on the same side, and the magnetic field enhancing sides of the two groups of the quenching magnet structures 110 are opposite to each other. That is, the number of the quenching magnet structures 110 may be two as shown in fig. 4 and 8, two quenching magnet structures 110 are divided into two groups, one quenching magnet structure 110, and the magnetic field enhancing sides of the two quenching magnet structures 110 are opposite; as shown in fig. 12, the number of the arc extinguishing magnet structures 110 may also be four, the four arc extinguishing magnet structures 110 are divided into two groups, each group includes two arc extinguishing magnet structures 110, and the magnetic field enhancement sides of the arc extinguishing magnet structures 110 in each group are located on the same side, referring to fig. 12, in fig. 12, the two arc extinguishing magnet structures 110 on the left side are in one group, the magnetic field enhancement sides thereof are located on the right side, the two arc extinguishing magnet structures 110 on the right side are in one group, and the magnetic field enhancement sides thereof are located on the left side; of course, the number of the quenching magnet structures 110 may also be three, five, etc., and is not particularly limited herein.

In the embodiment of the present application, the number of the quenching magnet structures 110 is two and four, for example.

When the number of the blowout magnet structures 110 is two, the arrangement manner of the blowout magnet structures 110 has various forms, and for example, the embodiment of the present application is described in the following forms:

in a first configuration, referring to fig. 4, each of the two arc extinguishing magnet structures 110 includes three magnet units 111 sequentially arranged along a first linear direction, which is a length direction of the arc extinguishing magnet structure 110. In the same blowout magnet structure 110: the two magnet units 111 at the two ends point oppositely and are parallel to the first straight line direction, and the magnet unit 111 in the middle points perpendicularly to the first straight line direction. Wherein the orientation of the magnet unit 111 is a direction in which the S pole of the magnet unit 111 points to the N pole. In the first arrangement of the blowout magnet structures 110, the number of the contact assemblies 200 is two, the two contact assemblies 200 are respectively located on the magnetic field enhancement sides of the two blowout magnet structures 110, and each contact assembly 200 is directly opposite to the magnet unit 111 located in the middle.

In the first arrangement manner of the blowout magnet structure 110, the magnetic field intensity of the region on the magnetic field enhancing side of the blowout magnet structure 110 and directly facing the magnet unit 111 located in the middle is strong and the magnetic field distribution is uniform, which is beneficial for the blowout magnet structure 110 to move the arc generated between the moving contact and the fixed contact out of the space between the moving contact and the fixed contact.

It should be noted that, in the arrangement of the first blowout magnet structure 110, the blowout magnet structure 110 may be formed by magnetizing one magnet according to the directions of the three magnet units 111, and the blowout magnet structure 110 may also be formed by splicing three magnets with different directions, that is, each magnet unit is a magnet.

In some embodiments of the first blowout magnet structure 110 arrangement, as shown in fig. 1, in the same blowout magnet structure 110: two S poles of the two magnet units 111 at the two ends are close to the magnet unit 111 in the middle, and the S pole of the magnet unit 111 in the middle is close to the magnetic field enhancing side of the blowout magnet structure 110, the magnet unit 111 is arranged in the same direction as the three magnet units 111, and compared with the arrangement mode that the direction of the three magnet units is perpendicular to the first straight line direction, the magnetic field at one side of the magnet unit 111 is significantly enhanced, and the magnetic field at the side opposite to the magnetic field enhancing side of the magnet unit is significantly weakened. In this embodiment, please refer to fig. 4 and 5 together, fig. 4 is a schematic structural diagram of a contactor in the embodiment of the present application, fig. 5 is a schematic structural diagram of the contactor in fig. 4 for changing the current direction, in fig. 4, x represents that the current flow direction is inward in a direction perpendicular to the plane of fig. 4, x represents that the current flow direction is outward in a direction perpendicular to the plane of fig. 4, and an arrow represents that the arc is subjected to the lorentz force in the magnetic field, and similarly, in fig. 5, x represents that the current flow direction is inward in a direction perpendicular to the plane of fig. 5, x represents that the current flow direction is outward in a direction perpendicular to the plane of fig. 5, and an arrow represents that the arc is subjected to the lorentz force in the magnetic field. When the number of the contact assemblies 200 is two, the movable contacts of the two contact assemblies 200 are conducted through the conductive bridge 300, so that the two contact assemblies 200 serve as connection points of two break points in the conductive circuit with the same polarity. As can be seen from fig. 4 and 5, the current direction in fig. 4 is opposite to the current direction in fig. 5, but the arc extinguishing magnet structure 110 can move the arc generated between the moving contact and the fixed contact out of the moving contact and the fixed contact, and the moving-out effect is the same, so that the contactor meets the requirement of no polarity, the contactor is more convenient to install, and the requirement of bidirectional protection of the system is met.

In other embodiments of the first blowout magnet structure 110 arrangement, as shown in fig. 6, in one of the blowout magnet structures 110: two S poles of the two magnet units 111 located at both ends are close to the magnet unit 111 located in the middle, and the S pole of the magnet unit 111 located in the middle is close to the magnetic field enhancing side of the blowout magnet structure 110; in another blowout magnet structure 110: two N poles of the two magnet units 111 located at both ends are close to the magnet unit 111 located in the middle, and the N pole of the magnet unit 111 located in the middle is close to the magnetic field enhancing side of the blowout magnet structure 110; the two magnet units 111 are arranged in the same direction as the three magnet units 111, and compared with the arrangement mode in which the first straight line direction is perpendicular, the magnetic field on one side is obviously enhanced, and the magnetic field on the side opposite to the side with the enhanced magnetic field is obviously weakened. In this embodiment, please refer to fig. 6 and 7 together, fig. 6 is another structural schematic diagram of the contactor in the embodiment of the present application, fig. 7 is a structural schematic diagram of the contactor in fig. 6 for changing the current direction, in fig. 6, x represents that the current flows inward in the direction perpendicular to the plane of fig. 6, x represents that the current flows outward in the direction perpendicular to the plane of fig. 6, and an arrow represents that the arc is subjected to the lorentz force in the magnetic field, and similarly, in fig. 7, x represents that the current flows inward in the direction perpendicular to the plane of fig. 7, x represents that the current flows outward in the direction perpendicular to the plane of fig. 7, and an arrow represents that the arc is subjected to the lorentz force in the magnetic field. When the number of the contact assemblies 200 is two, the movable contacts of the two contact assemblies 200 are conducted through the conductive bridge 300, so that the two contact assemblies 200 serve as connection points of two break points in the conductive circuit with the same polarity. As can be seen from fig. 6 and 7, the current direction in fig. 6 is opposite to the current direction in fig. 7, but the arc extinguishing magnet structure 110 can move the arc generated between the moving contact and the fixed contact out of the moving contact and the fixed contact, and the moving-out effect is the same, so that the contactor meets the requirement of no polarity, the contactor is more convenient to install, and the requirement of bidirectional protection of the system is met.

In a second arrangement, referring to fig. 8, each of the two quenching magnet structures 110 includes a first magnet unit 1111, a second magnet unit 1112, a third magnet unit 1113, a fourth magnet unit 1114, and a fifth magnet unit 1115 sequentially arranged along a second linear direction, which is the length direction of the quenching magnet structure 110. In the same blowout magnet structure 110: the first magnet unit 1111 is directed in the same direction as the fifth magnet unit 1115 and both parallel to the second linear direction, the second magnet unit 1112 is directed in the opposite direction as the fourth magnet unit 1114 and both perpendicular to the second linear direction, and the third magnet unit 1113 is directed in the opposite direction as the first magnet unit 1111. Wherein the orientation of each magnet unit is the direction in which the S pole of each magnet unit points to the N pole. In the second arrangement of the blowout magnet structure 110, the number of the contact assemblies 200 is four, every two contact assemblies 200 are in one group, and the moving contacts of the two contact assemblies 200 in each group are conducted through the conductive bridge 300. In the two sets of contact assemblies 200, two contact assemblies 200 of one set are respectively located on the magnetic field enhancing side of the two blowout magnet structures 110 and respectively face the second magnet units 1112 of the two blowout magnet structures 110, and two contact assemblies 200 of the other set are respectively located on the magnetic field enhancing side of the two blowout magnet structures 110 and respectively face the fourth magnet units 1114 of the two blowout magnet structures 110.

In some embodiments of the second blowout magnet structure 110 arrangement, as shown in fig. 8, in the same blowout magnet structure 110: the S pole of first magnet unit 1111 is adjacent to second magnet unit 1112 and the S pole of second magnet unit 1112 is adjacent to the magnetic field enhancing side of blowout magnet structure 110. From the above description that the first magnet unit 1111 is directed in the same direction as the fifth magnet unit 1115, the second magnet unit 1112 is directed in the opposite direction as the fourth magnet unit 1114, and the third magnet unit 1113 is directed in the opposite direction as the first magnet unit 1111, it can be inferred that the third magnet unit 1113, the fourth magnet unit 1114, and the fifth magnet unit 1115 are directed in the opposite direction. That is, in this embodiment, in the same blowout magnet structure 110: the S pole of the first magnet unit 1111 is close to the second magnet unit 1112, the S pole of the second magnet unit 1112 is close to the magnetic field enhancing side of the blowout magnet structure 110, the S pole of the third magnet unit 1113 is close to the second magnet unit 1112, the N pole of the fourth magnet unit 1114 is close to the magnetic field enhancing side of the blowout magnet structure 110, and the N pole of the fifth magnet unit 1115 is close to the fourth magnet unit 1114. Similarly, compared to the arrangement in which the five magnet units are oriented in the same direction and are all perpendicular to the second linear direction, the magnetic field of one side of the five magnet units is significantly increased and the magnetic field of the side opposite to the side with the increased magnetic field is significantly decreased after the five magnet units are arranged according to the second arrangement of the blowout magnet structure 110. That is, as shown in fig. 8, the field-enhancing side of the blowout magnet structure 110 on the left side of fig. 8 is located on the right side of the blowout magnet structure 110, and the field-weakening side is located on the left side of the blowout magnet structure 110.

In addition, when the quenching magnet structure 110 provided in the contactor is the second installation method (the installation method shown in fig. 8), the contactor also satisfies the requirement of non-polarity. Referring to fig. 8 and 9 together, fig. 8 is another structural diagram of the contactor in the embodiment of the present application, fig. 9 is a structural diagram of the contactor in fig. 8 for changing the direction of the current, in fig. 8, x represents that the current flows inward in a direction perpendicular to the plane of fig. 8, that the current flows outward in a direction perpendicular to the plane of fig. 8, and that the arrow represents the direction of the lorentz force applied to the arc in the magnetic field, and in fig. 9, x represents that the current flows inward in a direction perpendicular to the plane of fig. 9, that the current flows outward in a direction perpendicular to the plane of fig. 9, and that the arrow represents the direction of the lorentz force applied to the arc in the magnetic field. When the same conductive bridge 300 is connected with two moving contacts, the fixed contacts matched with the two moving contacts are used as connection points of two break points in the conductive circuit with the same polarity, as can be seen from fig. 8 and 9, the current direction in fig. 8 is opposite to the current direction in fig. 9, but the arc extinguishing magnet structure 110 can move the arc generated between the moving contact and the fixed contact out of the fixed contact and the fixed contact, and the moving-out effect is the same, therefore, the contactor meets the requirement of no polarity, the installation of the contactor is more convenient, and the requirement of bidirectional protection of the system is met.

In other embodiments of the second arrangement of blowout magnet structures 110, as shown in fig. 10, in one of the blowout magnet structures 110: the S pole of first magnet unit 1111 is proximate to second magnet unit 1112, and the S pole of second magnet unit 1112 is proximate to the field enhancing side of blowout magnet structure 110; in another blowout magnet structure 110: the N pole of first magnet unit 1111 is adjacent to second magnet unit 1112 and the N pole of second magnet unit 1112 is adjacent to the magnetic field enhancing side of blowout magnet structure 110. From the above-described pointing direction of the first magnet unit 1111 is the same as the pointing direction of the fifth magnet unit 1115, the pointing direction of the second magnet unit 1112 is opposite to the pointing direction of the fourth magnet unit 1114, and the pointing direction of the third magnet unit 1113 is opposite to the pointing direction of the first magnet unit 1111, it can be deduced that the pointing directions of the third magnet unit 1113, the fourth magnet unit 1114, and the fifth magnet unit 1115 of the two quenching magnet structures 110. The arrangement of the five magnet units of the two arc extinguishing magnet structures 110 is the same as the orientation of the five magnet units, and compared with the arrangement perpendicular to the second linear direction, the magnetic field on one side is significantly enhanced, and the magnetic field on the side opposite to the side where the magnetic field is enhanced is significantly weakened. That is, as shown in fig. 10, the magnetic field increasing side of the left-hand blowout magnet structure 110 in fig. 10 is located on the right side of the blowout magnet structure 110, the magnetic field decreasing side is located on the left side of the blowout magnet structure 110, the magnetic field increasing side of the right-hand blowout magnet structure 110 is located on the left side of the blowout magnet structure 110, and the magnetic field decreasing side is located on the right side of the blowout magnet structure 110.

In addition, when the quenching magnet structure 110 provided in the contactor is the second installation method (the installation method shown in fig. 10), the contactor also satisfies the non-polarity requirement. Referring to fig. 10 and 11 together, fig. 10 is another structural diagram of the contactor in the embodiment of the present application, fig. 11 is a structural diagram of the contactor in fig. 10 for changing the direction of the current, in fig. 10, x represents that the current flows inward in a direction perpendicular to the plane of fig. 10, that the current flows outward in a direction perpendicular to the plane of fig. 10, and arrows represent the direction of the lorentz force applied to the arc in the magnetic field, and in fig. 11, x represents that the current flows inward in a direction perpendicular to the plane of fig. 11, that the current flows outward in a direction perpendicular to the plane of fig. 11, and that the arrows represent the direction of the lorentz force applied to the arc in the magnetic field. When the same conductive bridge 300 is connected with two moving contacts, the fixed contacts matched with the two moving contacts are used as connection points of two break points in the conductive circuit with the same polarity, as can be seen from fig. 10 and 11, the current direction in fig. 10 is opposite to the current direction in fig. 11, but the arc extinguishing magnet structure 110 can move the arc generated between the moving contact and the fixed contact out of the fixed contact and the fixed contact, and the moving-out effect is the same, so that the contactor meets the requirement of no polarity, the installation of the contactor is more convenient, and the requirement of bidirectional protection of the system is met.

It should be noted that, in the second arrangement of the blowout magnet structure 110, the blowout magnet structure 110 may be formed by magnetizing one magnet according to the directions of the five magnet units, and the blowout magnet structure 110 may also be formed by splicing five magnets with different directions, that is, each magnet unit is a magnet.

When the number of the quenching magnet structures 110 is four, for example, the quenching magnet structures 110 may be arranged as follows: referring to fig. 12, in the four arc extinguishing magnet structures 110, the arrangement of each arc extinguishing magnet structure 110 is the same as that of the first arc extinguishing magnet structure 110, the four arc extinguishing magnet structures 110 are divided into two groups, each group includes two arc extinguishing magnet structures 110, the magnetic field enhancement sides of each arc extinguishing magnet structure 110 in each group are located on the same side, and the magnetic field enhancement sides of the two groups of arc extinguishing magnet structures 110 are opposite to each other. The number of the contact assemblies 200 is four, each two contact assemblies 200 are in one group, and the movable contacts of the two contact assemblies 200 in each group are conducted through the conductive bridge 300. In the two sets of contact assemblies 200, two contact assemblies 200 of one set are respectively located on the magnetic field enhancing sides of two opposite blowout magnet structures 110 and respectively face the magnet unit 111 located in the middle of the two blowout magnet structures 110, and two contact assemblies 200 of the other set are respectively located on the magnetic field enhancing sides of the other two opposite blowout magnet structures 110 and respectively face the magnet unit 111 located in the middle of the two blowout magnet structures 110.

In some embodiments of the present application, to facilitate the fixed mounting of the blowout magnet structures 110, illustratively, as illustrated in fig. 12, two opposing blowout magnet structures 110 are fixed by a mounting fixing frame.

It is understood that the number of contact assemblies 200 is not limited to two and four, and may be three or more, and the same conductive bridge 300 may connect two or more contact assemblies 200 at the same time. When the same conductive bridge 300 is connected with two moving contacts, the fixed contacts matched with the two moving contacts are used as connection points of two breakpoints in the conductive circuit with the same polarity; when the same conductive bridge 300 is connected to more than two moving contacts, each fixed contact can be used as an electrical connection point, and at the same time, the contactor can realize simultaneous conduction of a plurality of electrical connection points of circuits with the same polarity.

In another embodiment of the present application, referring to fig. 13 and 15 together, the number of the quenching magnet structures 110 is one, the quenching magnet structures 110 are ring-shaped structures, and the quenching magnet structures 110 include a ring-shaped fixing frame 400 and a plurality of magnet units disposed on the ring-shaped fixing frame 400. Optionally, the number of the magnet units is eight, the annular fixing frame is a circular frame, the eight magnet units are uniformly arranged on the circular frame, and the uniform arrangement of the magnet units on the annular fixing frame 400 can make the magnetic field distribution of the arc extinguishing magnet structure 110 uniform.

It is to be understood that the number of the magnet units of the quenching magnet structure 110 in the ring structure is not limited to eight, and may be more, and in the embodiment of the present application, the number of the magnet units of the quenching magnet structure 110 in the ring structure is illustrated as eight, and for convenience of illustration, the eight magnet units are, in order along the circumferential direction of the circular frame, the first magnet unit 1111 to the eighth magnet unit 1118, that is, the first magnet unit 1111, the second magnet unit 1112, the third magnet unit 1113, the fourth magnet unit 1114, the fifth magnet unit 1115, the sixth magnet unit 1116, the seventh magnet unit 1117, and the eighth magnet unit 1118.

It should be noted that the annular fixed frame may be a fixed frame, or may be an annular magnet, and when the annular fixed frame is a fixed frame, the plurality of magnet units disposed on the annular fixed frame 400 are a plurality of magnets, and the plurality of magnets are respectively fixed on the annular fixed frame to form the quenching magnet structure 110; when the ring-shaped fixing frame is a ring-shaped magnet, the plurality of magnet units provided on the ring-shaped fixing frame 400 are formed by magnetizing different regions of the ring-shaped magnet, that is, when the blowout magnet structure 110 is a ring-shaped structure, the blowout magnet structure 110 is formed by magnetizing a ring-shaped magnet in the direction of the plurality of magnet units provided thereon.

When the number of the magnet units of the blowout magnet structure 110 in the ring structure is eight, the blowout magnet structure 110 may be disposed in two forms as follows:

in a first form: in any two adjacent magnet units along the circumferential direction of the circular frame, the included angle between the orientations of the two magnet units is 45 degrees. Wherein the orientation of the magnet unit is a direction in which the S pole of the magnet unit is directed to the N pole.

Alternatively, referring to fig. 13, among the eight magnet units, the first magnet unit 1111 and the fifth magnet unit 1115 are symmetric with respect to the center of the circular frame, and both of the first magnet unit and the fifth magnet unit are oriented to the center of the circular frame along the radial direction of the circular frame. Based on the first form of the quenching magnet structure 110 in a ring structure, of any two adjacent magnet units in the circumferential direction of the circular frame, the angle between the orientations of the two magnet units is 45 °, the orientations of the remaining magnet units can be determined, and it can be determined that the second magnet unit 1112 and the sixth magnet unit 1116 are symmetrical with respect to the center of the circular frame, the third magnet unit 1113 and the seventh magnet unit 1117 are symmetrical with respect to the center of the circular frame, and the fourth magnet unit 1114 and the eighth magnet unit 1118 are symmetrical with respect to the center of the circular frame. At this time, the magnetic field enhancing side of the blowout magnet structure 110 is located outside the blowout magnet structure 110 having the ring structure.

In the first form of the blowout magnet structure 110 having the ring structure, the number of the contact assemblies 200 is four, each two contact assemblies 200 are in one group, and the movable contacts of the two contact assemblies 200 in each group are conducted through the conductive bridge 300. In the two sets of contact assemblies 200, two contact assemblies 200 of one set are respectively opposite to the first magnet unit 1111 and the seventh magnet unit 1117, and two contact assemblies 200 of the other set are respectively opposite to the third magnet unit 1113 and the fifth magnet unit 1115.

Referring to fig. 13 and 14 together, fig. 13 is another structural schematic diagram of the contactor in the embodiment of the present application, fig. 14 is a structural schematic diagram of the contactor in fig. 13 for changing the current direction, in fig. 13, x represents that the current flow direction is inward in a direction perpendicular to the plane of fig. 13, that the current flow direction is outward in a direction perpendicular to the plane of fig. 13, and that the arrow represents the direction of the lorentz force applied to the arc in the magnetic field, and similarly, in fig. 14, x represents that the current flow direction is inward in a direction perpendicular to the plane of fig. 14, that the current flow direction is outward in a direction perpendicular to the plane of fig. 14, and that the arrow represents the direction of the lorentz force applied to the arc in the magnetic field. As can be seen from fig. 13 and 14, the current direction in fig. 13 is opposite to the current direction in fig. 14, but the arc extinguishing magnet structure 110 can move the arc generated between the moving contact and the fixed contact out of the moving contact and the fixed contact, and the moving-out effect is the same, so that the contactor meets the requirement of no polarity, the contactor is more convenient to install, and the requirement of bidirectional protection of the system is met.

In a second form: in any two adjacent magnet units along the circumferential direction of the circular frame, the included angle between the orientations of the two magnet units is 135 degrees. Wherein the orientation of the magnet unit is a direction in which the S pole of the magnet unit points to the N pole.

Alternatively, referring to fig. 15, as in the first form of the quenching magnet structure 110 in the ring structure, among the eight magnet units, the first magnet unit 1111 and the fifth magnet unit 1115 are symmetrical with respect to the center of the circular frame, and both the first magnet unit and the fifth magnet unit are oriented to the center of the circular frame along the radial direction of the circular frame. Based on the fact that in the first form of the blowout magnet structure 110 having the ring-shaped structure, of any adjacent two magnet units in the circumferential direction of the circular frame, the angle between the orientations of the two magnet units is 135 °, the orientations of the remaining magnet units can be determined, and it can be determined that the second magnet unit 1112 and the sixth magnet unit 1116 are symmetrical with respect to the center of the circular frame, the third magnet unit 1113 and the seventh magnet unit 1117 are symmetrical with respect to the center of the circular frame, and the fourth magnet unit 1114 and the eighth magnet unit 1118 are symmetrical with respect to the center of the circular frame. At this time, the magnetic field enhancing side of the blowout magnet structure 110 is located inside the blowout magnet structure 110 having a ring structure.

In the second form of the blowout magnet structure 110 in the annular structure, the number of the contact assemblies 200 is four, every two contact assemblies 200 are in one group, and the movable contacts of the two contact assemblies 200 in each group are conducted through the conductive bridge 300; in the two sets of contact assemblies 200, two contact assemblies 200 of one set are respectively opposite to the first magnet unit 1111 and the seventh magnet unit 1117, and two contact assemblies 200 of the other set are respectively opposite to the third magnet unit 1113 and the fifth magnet unit 1115.

Similarly, when the arc extinguishing magnet structure 110 having a ring structure is provided in the contactor in the second form, the contactor also satisfies the non-polarity requirement. Referring to fig. 15 and 16 together, fig. 15 is another structural schematic diagram of the contactor in the embodiment of the present application, fig. 16 is a structural schematic diagram of the contactor in fig. 15 for changing the current direction, in fig. 15, x represents that the current flow direction is inward in a direction perpendicular to the plane of fig. 15, that the current flow direction is outward in a direction perpendicular to the plane of fig. 15, and that the arrow represents the direction of the lorentz force applied to the arc in the magnetic field, and similarly, in fig. 16, x represents that the current flow direction is inward in a direction perpendicular to the plane of fig. 16, that the current flow direction is outward in a direction perpendicular to the plane of fig. 16, and that the arrow represents the direction of the lorentz force applied to the arc in the magnetic field. As can be seen from fig. 15 and 16, the current direction in fig. 15 is opposite to the current direction in fig. 16, but the arc extinguishing magnet structure 110 can move the arc generated between the moving contact and the fixed contact out of the moving contact and the fixed contact, and the moving-out effect is the same, so that the contactor meets the requirement of no polarity, the contactor is more convenient to install, and the requirement of bidirectional protection of the system is met.

In an embodiment where the arc extinguishing magnet structures 110 are linear structures and the number of the arc extinguishing magnet structures 110 is two or four, and in an embodiment where the arc extinguishing magnet structures 110 are annular structures and the number of the arc extinguishing magnet structures 110 is one, the arc extinguishing magnet structures 110 may be arranged in a manner that: all the N poles and S poles in the blowout magnet structure 110 are in the same direction, that is, all the magnet units 111 in the blowout magnet structure 110 are oriented to rotate clockwise by 180 °, or all the magnet units 111 in the blowout magnet structure 110 are oriented to rotate counterclockwise by 180 °, and this arrangement still enables one side of the blowout magnet structure 110 to be a magnetic field enhancing side and the side opposite to the magnetic field enhancing side to be a magnetic field reducing side.

In all the above-mentioned setting manners of the blowout magnet structures 110, the setting manner of the blowout magnet structures 110 is to enhance the magnetic field strength of one side of the blowout magnet structures 110 by changing the arrangement manner of the magnet units 111, and compared with the permanent magnets with the same arrangement manner of the magnet units (the directions of the magnet units are the same), the magnetic field strength of the magnetic field enhancement side of the blowout magnet structures 110 is significantly enhanced. This mode can be under the condition that does not increase contactor cost for contactor arc extinguishing effect is better, and more stable.

In order to further enhance the arc extinguishing effect of the contactor, as shown in fig. 1 and 8, the contactor further includes a plurality of arc chute plate assemblies 120, the plurality of arc chute plate assemblies 120 correspond to the plurality of contact assemblies 200 one by one, in the corresponding arc chute plate assemblies 120 and contact assemblies 200, the arc chute plate assemblies 120 are located beside the contact assemblies 200, the fixed contact of each contact assembly 200 includes a fixed contact and an arc striking plate disposed around the fixed contact, and the arc striking plate is configured to be matched with the arc extinguishing magnet structure 110, so as to introduce the arc generated between the movable contact and the fixed contact into the arc chute plate assemblies 120. That is to say, the arc extinguishing magnet structure 110 moves the arc generated between the moving contact and the fixed contact out to the arc striking plate from between the moving contact and the fixed contact, and promotes the arc to enter the arc extinguishing grid plate component 120 from the arc striking plate, so as to rapidly and effectively perform arc extinguishing treatment on the arc generated between the moving contact and the fixed contact, and the arc extinguishing magnet structure 110, the arc striking plate and the arc extinguishing grid plate component 120 cooperate to extinguish the arc, thereby greatly improving the arc extinguishing effect of the contactor, and prolonging the service life of the contactor.

Optionally, the arc chute assembly 120 includes two fixing frames disposed at an interval and opposite to each other, and a plurality of arc chutes disposed at an interval are disposed in the two fixing frames. Based on the requirement that this contactor can satisfy nonpolarity, when the current flow direction of this contactor is opposite, the direction of the lorentz force that the electric arc received is opposite, consequently, two fixed frames all set up by contact subassembly 200, and are located the initiating zone and the district that finishes of the moving direction of the electric arc that produces respectively between moving contact and the static contact, that is to say, two fixed frames all set up by contact subassembly 200, and are located the place ahead and the rear of the moving direction of the electric arc that produces respectively between moving contact and the static contact. This setting can make the contactor satisfy nonpolarity's requirement for this contactor installation is more convenient, reaches system bidirectional protection's demand.

Based on the same inventive concept, please refer to fig. 17, an embodiment of the present application provides an energy storage system 10, and the energy storage system 10 includes the contactor 13 according to any of the above aspects. For example, as shown in fig. 17, the energy storage system 10 includes a battery module 11, a direct current molded case circuit breaker 12, a contactor 13, and a direct current voltage conversion module (DC-DC module 14) connected in sequence, where the contactor 13 is the contactor 13 according to any of the above solutions, the contactor 13 is disposed on the direct current molded case circuit breaker 12 and the DC-DC module 14 and is used for controlling connection and disconnection of a line, the direct current molded case circuit breaker 12 is capable of automatically cutting off a current protection loop after a current exceeds a trip setting, and the DC-DC module 14 converts a voltage provided by the battery module 11 into a voltage required by an electric device.

Based on the same inventive concept, please refer to fig. 18, an embodiment of the present application provides a charging pile 20, where the charging pile 20 includes the contactor 13 according to any of the above aspects. For example, as shown in fig. 18, the charging pile 20 further includes an AC-to-DC power supply module (AC-DC module 21), a DC voltage conversion module (DC-DC module 14), a contactor group 22, a shunt 23, a contactor 13, and a charging gun 24, which are connected in sequence, where the contactor group 22 includes a plurality of contactors 13 according to any one of the above schemes, that is, the charging pile 20 further includes, in addition to the contactors 13 according to any one of the above schemes, an AC-to-DC power supply module (AC-DC module 21), a DC voltage conversion module (DC-DC module 14), a shunt 23, and a charging gun 24; the number of the contactors 13 is plural, one contactor 13 is connected between the shunt 23 and the charging gun 24, and the remaining contactors 13 are connected between the dc voltage conversion module and the shunt 23. A plurality of contactors 13 of a contactor group 22 form a shared switch matrix together to control the on-off of a main loop, the contactors 13 between a shunt 23 and a charging gun 24 are used for controlling the on-off of the charging gun 24, an AC-DC module 21 is used for converting alternating current into direct current, a DC-DC module 14 is used for converting front-stage direct current into voltage for automobile charging, and the shunt 23 is used for detecting the current in the loop.

Based on the same inventive concept, referring to fig. 19, an embodiment of the present application provides a vehicle 30, where the vehicle 30 includes a charging port 31, a battery module 11, and a contactor 13 connected between the charging port 31 and the battery module 11, and the contactor 13 is the contactor 13 according to any one of the above aspects. Illustratively, as shown in fig. 19, the vehicle 30 includes a charging port 31, a contactor 13, a fuse 32 and a battery module 11 which are connected in sequence, the fuse 32 is used for fusing when the current exceeds a threshold value so as to break a circuit to complete protection, and the contactor 13 connected between the charging port 31 and the fuse 32 is used for controlling the on-board loop to be switched on and off.

It should be noted that the battery module 11 in the vehicle 30 provided in the embodiment of the present application and the battery module 11 in the energy storage system 10 provided in the embodiment of the present application are only a general term, and the specific arrangement manner thereof may be the same or different.

This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (15)

1. A contactor comprising an arc extinguishing magnet structure having opposing first and second sides, the first side being a magnetic field enhancing side of the arc extinguishing magnet structure, the second side being a magnetic field reducing side of the arc extinguishing magnet structure;

a contact assembly is arranged on the first side of the arc extinguishing magnet structure and comprises a moving contact and a fixed contact which are oppositely arranged;

the arc extinguishing magnet structure is configured to move an arc generated between the moving contact and the stationary contact away from between the moving contact and the stationary contact.

2. The contactor according to claim 1, wherein said quenching magnet structure is a linear structure;

the number of the arc extinguishing magnet structures is at least two, all the arc extinguishing magnet structures are divided into two groups, the magnetic field strengthening sides of the arc extinguishing magnet structures in each group are located on the same side, and the magnetic field strengthening sides of the two groups of arc extinguishing magnet structures are opposite.

3. The contactor according to claim 2, wherein the number of said quenching magnet structures is two, each of said quenching magnet structures comprising three magnet units arranged in sequence along a first linear direction;

in the same said quenching magnet structure: the two magnet units positioned at the two ends have opposite directions and are parallel to the first straight line direction, and the direction of the magnet unit positioned in the middle is vertical to the first straight line direction; the orientation of the magnet unit is the direction that the S pole of the magnet unit points to the N pole;

the number of the contact assemblies is two, the two contact assemblies are respectively positioned on the magnetic field enhancement sides of the two arc extinguishing magnet structures, and each contact assembly is opposite to the magnet unit positioned in the middle.

4. The contactor according to claim 3, wherein in the same said quenching magnet structure:

two S poles of the two magnet units positioned at two ends are close to the magnet unit positioned in the middle;

the S pole of the magnet unit located in the middle is close to the magnetic field enhancing side of the blowout magnet structure.

5. The contactor according to claim 2, wherein the number of said quenching magnet structures is two, and each of said two quenching magnet structures comprises a first magnet unit, a second magnet unit, a third magnet unit, a fourth magnet unit and a fifth magnet unit arranged in sequence along a second linear direction;

in the same said quenching magnet structure: the direction of the first magnet unit is the same as that of the fifth magnet unit, and the first magnet unit and the fifth magnet unit are parallel to the second straight line direction, the direction of the second magnet unit is opposite to that of the fourth magnet unit, and the second magnet unit and the fourth magnet unit are perpendicular to the second straight line direction, and the direction of the third magnet unit is opposite to that of the first magnet unit; the orientation of the magnet unit is the direction that the S pole of the magnet unit points to the N pole;

the number of the contact assemblies is four, every two contact assemblies are in one group, and the moving contacts of the two contact assemblies in each group are conducted through the conductive bridge;

in two groups of contact assemblies, one group of two contact assemblies are respectively positioned on the magnetic field enhancement sides of the two arc extinguishing magnet structures and are respectively opposite to the second magnet units of the two arc extinguishing magnet structures, and the other group of two contact assemblies are respectively positioned on the magnetic field enhancement sides of the two arc extinguishing magnet structures and are respectively opposite to the fourth magnet units of the two arc extinguishing magnet structures.

6. The contactor according to claim 5, characterized in that in the same said quenching magnet structure: the S pole of the first magnet unit is close to the second magnet unit; the S pole of the second magnet unit is close to the magnetic field enhancing side of the blowout magnet structure.

7. The contactor according to claim 1, wherein the number of the quenching magnet structures is one, the quenching magnet structures include an annular fixing frame, and a plurality of magnet units provided on the annular fixing frame.

8. The contactor according to claim 7, wherein the number of said magnet units is eight, said annular fixed frame is a circular frame, and eight of said magnet units are uniformly arranged on said circular frame;

in any two adjacent magnet units along the circumferential direction of the circular frame, the included angle between the pointing directions of the two magnet units is 45 degrees or 135 degrees.

9. The contactor according to claim 8, wherein eight of said magnet units are respectively a first magnet unit to an eighth magnet unit in a circumferential direction of a circular frame, wherein said first magnet unit and said fifth magnet unit are symmetrical with respect to a center of said circular frame, and both of said first magnet unit and said fifth magnet unit are directed toward the center of said circular frame in a radial direction of said circular frame;

the number of the contact assemblies is four, and every two contact assemblies form a group; the moving contacts of the two contact assemblies in each group are conducted through the conductive bridge; in the two groups of contact assemblies, two contact assemblies in one group are respectively opposite to the first magnet unit and the seventh magnet unit, and two contact assemblies in the other group are respectively opposite to the third magnet unit and the fifth magnet unit.

10. The contactor according to any one of claims 1 to 9, further comprising a plurality of arc chute assemblies, the plurality of arc chute assemblies corresponding one-to-one to the plurality of contact assemblies, the arc chute assemblies being located beside the contact assemblies in the corresponding arc chute assemblies and contact assemblies;

the fixed contact of each contact assembly comprises a fixed contact and an arc striking plate arranged around the fixed contact, and the arc striking plate is configured to be matched with the arc extinguishing magnet structure to introduce electric arcs generated between the movable contact and the fixed contact into the arc extinguishing grid plate assembly.

11. The contactor according to claim 10, wherein said arc chute assembly comprises two spaced and oppositely disposed fixed frames, each of said fixed frames having a plurality of spaced arc extinguishing plates disposed therein;

the two fixing frames are arranged beside the contact assembly and are respectively positioned in a starting area and an ending area of the moving direction of the electric arc generated between the moving contact and the fixed contact.

12. An energy storage system comprising a contactor according to any of claims 1-10.

13. A charging pile comprising the contactor as claimed in any one of claims 1 to 10.

14. The charging pile according to claim 13, further comprising an ac-to-dc power supply module, a dc voltage conversion module, a shunt and a charging gun connected in sequence;

the number of the contactors is a plurality of, one of the contactors is connected between the shunt and the charging gun, and the rest of the contactors are connected between the direct-current voltage conversion module and the shunt.

15. A vehicle comprising a charging port, a battery module, and a contactor connected between the charging port and the battery module, the contactor being the contactor of any one of claims 1-10.

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