KR20170000358U - Relay for deducing electrodynamic repulsion - Google Patents

Relay for deducing electrodynamic repulsion Download PDF

Info

Publication number
KR20170000358U
KR20170000358U KR2020150004814U KR20150004814U KR20170000358U KR 20170000358 U KR20170000358 U KR 20170000358U KR 2020150004814 U KR2020150004814 U KR 2020150004814U KR 20150004814 U KR20150004814 U KR 20150004814U KR 20170000358 U KR20170000358 U KR 20170000358U
Authority
KR
South Korea
Prior art keywords
contact
movable
movable contact
contact surface
stationary
Prior art date
Application number
KR2020150004814U
Other languages
Korean (ko)
Inventor
홍승기
Original Assignee
엘에스산전 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘에스산전 주식회사 filed Critical 엘에스산전 주식회사
Priority to KR2020150004814U priority Critical patent/KR20170000358U/en
Publication of KR20170000358U publication Critical patent/KR20170000358U/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Contacts (AREA)

Abstract

The present invention relates to a relay capable of increasing a contact area between a fixed contact and a movable contact so as to prevent a contact failure between the fixed contact and the movable contact by an electromagnetic repulsive force, A movable contact which is brought into contact with and separated from the fixed contact; A shaft connected to the movable contact to move the movable contact; And an actuator for driving the shaft, wherein the stationary contact and the movable contact are in surface contact with each other.

Description

[0001] RELAY FOR DEDUCING ELECTRODYNAMIC REPULSE [0002]

The present invention relates to a relay, and more particularly, to a relay capable of minimizing the electromagnetic repulsion of a contact.

Generally, an electric vehicle uses a motor using a battery as a power source, and a hybrid electric vehicle uses a motor using an engine of an internal combustion engine and a battery as a power source. In a hybrid vehicle or an electric vehicle, a plurality of batteries are connected in series or series and a parallel combination structure according to a required capacity, and the vehicle is driven by supplying power to the motor by mounting the battery in a form of a battery set .

In such an electric vehicle, a circuit opening / closing device for supplying and disconnecting the electric power stored in the battery to the motor as needed is required. A direct current relay is mainly used as the circuit opening / closing device. The relay is a type of an electric circuit switching device that transmits mechanical signals and current signals using the electromagnet principle. These relays are placed inside the battery system to switch the battery to power or shut off the motor.

But. When the relay is used as a circuit opening / closing device, the following problems arise. Generally, a relay includes a fixed contact and a movable contact, and the movable contact is driven by an electrical signal to contact or separate from the fixed contact, thereby supplying or blocking electric power.

However, the conventional relay has the following problems. Generally, the end portion of the stationary contact is formed in a conical shape, and when the stationary contact and the movable contact come into contact, a point contact is made. Since a high voltage is applied to the fixed contact, a high current flows through the fixed contact and the movable contact when the fixed contact and the movable contact come into contact with each other. Therefore, a strong electro-dynamic repulsion is generated in the contacted region as the high current flows through the point-contacted region. The fixed contact and the movable contact, which are contacted by the electromagnetic repulsion force, A problem occurs.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a relay capable of preventing the current supply from being cut off by increasing the contact area between the stationary contact and the movable contact and reducing the electromagnetic repulsive force between the stationary contact and the movable contact The purpose.

According to an aspect of the present invention, there is provided a relay including: a fixed contact; A movable contact which is brought into contact with and separated from the fixed contact; A shaft connected to the movable contact to move the movable contact; And an actuator for driving the shaft, wherein the stationary contact and the movable contact are in surface contact with each other.

The actuator includes an exciting coil for generating an electromagnetic force; A stator and a movable element vertically disposed in the exciting coil; And a return spring disposed between the stator and the mover to return the mover back to the original position. Wherein the stationary contact includes a convex rounded contact surface having a set curvature and the movable contact includes a concave shaped contact surface having a concave rounded contact surface having a predetermined curvature or having a set curvature, Shaped contact surface having a convex shape. At this time, the contact surface of the fixed contact and the contact surface of the movable contact have the same curvature.

Further, a relay according to another aspect of the present invention includes a fixed contact; A movable contact which is brought into contact with and separated from the fixed contact; At least one protrusion disposed at one of the stationary contact and the movable contact and contacting with a contact surface of the contact surface of the stationary contact and the contact surface of the movable contact; A shaft connected to the movable contact to move the movable contact; And an actuator for driving the shaft.

The projections are formed continuously or intermittently along the circumference of the stationary contact or the movable contact, and the contact surface of the movable contact and the contact surface of the stationary contact are in point contact. The contact surface of the movable contact and the contact surface of the stationary contact are rounded and the curvatures of the contact surface of the movable contact and the contact surface of the stationary contact have different values.

In the present invention, when the relay is driven, the contact area between the stationary contact and the movable contact is increased as compared with the conventional case, whereby the electromagnetic repulsive force between the stationary contact and the movable contact can be reduced. As a result, it is possible to prevent the contact failure between the fixed contact and the movable contact due to the electromagnetic repulsion force.

1 is a block diagram conceptually showing a schematic structure of an electric vehicle according to the present invention;
2 is a perspective view of a relay according to the present invention;
3 is a sectional view taken along the line AA in Fig.
4A and 4B are enlarged views of the area A of FIG. 3;
5A and 5B are views showing another structure of the fixed contact and the movable contact according to the present invention;

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing an internal structure of an electric vehicle according to the present invention.

As shown in FIG. 1, the electric vehicle according to the present invention includes a battery unit 101 for storing electric energy of a high voltage, and an electric motor 101 connected to the battery unit 101, And a relay 103 connected to the battery unit 101 via the relay 103. The current supplied from the battery unit 101 is supplied to the relay unit 103, A converter 105 for controlling the electric charging of the battery unit 101 to determine the remaining capacity of the battery unit 101 and the necessity of charging the battery unit 101 and supplying the current stored in the battery unit 101 to the motor A battery control unit 190 for controlling the operation of the converter 105 and a start unit 106 for applying a start signal to the vehicle control unit 104, ).

The battery unit 101 includes a plurality of battery cells storing high-voltage electric energy, and is charged with power supplied from a charging station, a vehicle charging facility, or a home. The battery unit 101 supplies the energy required for driving the electric vehicle or the energy required to operate the components such as an electric power steering, a water pump, an air conditioner, a turn signal lamp, a tail lamp, a head lamp, a brush and the like.

The relay 103 operates in accordance with a control signal applied from the vehicle control unit 104 to supply the current charged in the battery unit 101 to the converter 105. That is, the relay 103 operates according to a control command of the vehicle control unit 104 at the start of the vehicle to supply current to the converter 105, converts the current supplied from the converter 105, Apply current to motor and each part.

The battery management unit 108 charges the battery cells of the battery unit 101 and keeps the voltage difference between the battery cells in the battery unit 101 constant during operation of the electric vehicle so that the battery unit 101 is overcharged or overdischarged The life of the battery unit 101 can be extended. In addition, the battery management unit 108 allows the vehicle to run for a long time through the management of the current use, measures the remaining amount and voltage of the battery unit 101, and outputs the measured remaining amount and voltage to the vehicle control unit 104. Although not shown in the figure, the battery management unit 108 may include a protection circuit for current supplied to the battery unit 101. [

The vehicle control unit 104 transmits a relay driving signal for driving the relay 103 to the relay 103. As the relay 103 is driven, the battery unit 101 is electrically connected to the converter 105, (101) is supplied to the converter (105).

The relay 103 is controlled so that high-voltage operation power is not suddenly supplied when the vehicle starts, so that the power can be stably supplied to the vehicle. The vehicle control unit 104 also controls the converter 105 by controlling the on / off state of the relay 103 and transmitting and receiving the control signal with the converter 105.

Although not shown in the drawings, the starting portion 106 may be configured to turn on / off the connection between the key box of the vehicle and the vehicle accessory, the connection between the battery and the electric wire of the vehicle, And a start switch driving unit for driving the start switching unit and the start switching unit. At this time, the starting unit 106 may include not only the starting of the vehicle starting with the automobile key but also the starting portion of the start button.

When the vehicle is started by the starting unit 106, a signal is applied from the starting unit 106 to the vehicle control unit 104, and the vehicle control unit 104 executes overall control related to the vehicle operation. At this time, the vehicle control unit 104 controls the battery unit 101 through the battery management unit 108.

The converter 105 transmits a relay driving command signal requesting the vehicle control unit 104 to drive the relay 103 and the vehicle control unit 104 drives the relay 103 upon receiving the signal. The converter 105 performs PMW switching according to a control signal applied from the vehicle control unit 104 to convert the voltage of the battery unit 101 of several hundred volts to a voltage of approximately 12 V and supplies the voltage to the motor and various components.

2 and 3 are views showing the structure of a relay of an electric vehicle according to the present invention, wherein Fig. 2 is a perspective view and Fig. 3 is a sectional view taken along the line A-A.

As shown in FIG. 2, the relay 103 according to the present invention includes a housing 132 and a case 130 under the housing 132.

A fixed contact 134, a movable contact 136, a shaft 138, and a contact spring 148 are provided in the housing 132. At this time, the housing 132 extends to the case 130 disposed at the lower part and contacts the upper surface of the case 130, and contacts the fixed contact 134, the movable contact 136, the shaft 138 and the contact spring 148, Lt; / RTI > The housing 132 is preferably made of a material such as ceramic that has heat resistance and wear resistance and is easy to mold. The fixed contact 134 and the movable contact 136 may be made of a highly conductive metal such as copper.

A screw hole 134a is formed in the fixed contact 134 so that a cable or a bus bar 150 for transmitting current to the load side is fastened to the fixed contact 134 by a screw 152.

The fixed contact 134 is disposed on the upper portion of the housing 132 and is connected to the motor and various parts of the electric vehicle. The movable contact 136 moves in the vertical direction and contacts or separates from the fixed contact 134, Or to supply or block the load. On the other hand, the contact pressure spring 148 maintains the contact state with a pressure equal to or higher than a certain level when the movable contact 136 contacts the fixed contact 134 due to elasticity.

In the case 130, an electric actuator is disposed. The electric actuator includes an exciting coil 142, a stator 143, a mover 146, a return spring 144, and a shaft 138 passing through the case 130 along the axial direction from the top.

The exciting coil 142 is formed in a cylindrical shape to form an empty space therein and generates electromagnetic force by an electrical signal to generate a driving force between the stator 143 and the moving element 146. The stator 143 is connected to the exciting coil (142). The mover 146 is disposed in a cylindrical shape below the stator 143 of the vacant space inside the exciting coil 142.

The mover 146 is also referred to as an armature. The mover 146 is cylindrical and has a through-hole formed along the central axis thereof, so that the other end of the shaft 138 is fixedly inserted. The mover 146 is moved upward by the electric power generated by the exciting coil 142 and the upward motion of the mover 146 is transmitted to the movable contact 136 through the shaft 138, The contact 136 is moved up and down.

The return spring 144 is positioned between the stator 143 and the mover 146 to return the mover 146 to the original position by elasticity when the mover 146 is driven in the vertical direction.

The shaft 138 is axially passed through the center of the stator 143, the return spring 144 and the mover 146 to be engaged with the contact spring 148 and the movable contact 136. Accordingly, as the mover 145 moves by the electromagnetic force, the shaft 138 moves upward, and the movable contact 136 moves upward by the movement of the shaft 138 to move the fixed contact 134 .

4A is a view showing the structure when the fixed contact 134 and the movable contact 136 are separated from each other, FIG. 4B is a view showing the structure when the fixed contact 134 and the movable contact 136 are separated from each other, FIG. And shows the structure when the movable contact 136 is in contact.

As shown in Fig. 4A, the fixed contact 134 and the movable contact 136 have contact surfaces 134a and 136a, respectively. At this time, the contact surface 134a of the fixed contact 134 is rounded and the contact surface 136a of the movable contact 136 is also rounded. At this time, if the contact surface 134a of the fixed contact 134 and the contact surface 136a of the movable contact 136 are in an opposite relationship with each other, for example, in the round shape in which the contact surface 134a of the fixed contact 134 protrudes, And the contact surface 136a of the movable contact 136 protrudes when the contact surface 136a of the movable contact 136 is a concave round shape and the contact surface 134a of the fixed contact 134 has a concave round shape. In addition, the curvature of the contact surface 134a of the fixed contact 134 and the curvature of the contact surface 136a of the movable contact 136 are substantially similar.

The contact surface 136a of the movable contact 136 and the contact surface 134a of the stationary contact 134 is in an opposite shape (protrusion) when the stationary contact 134 and the movable contact 136 come into contact with each other, The contact surface 134a of the fixed contact 134 and the contact surface 136a of the movable contact 136 come into contact with each other as a whole.

That is, in the present invention, the stationary contact 134 and the movable contact 136 are not in point contact but in contact. Therefore, since the area of the fixed contact 134 and the movable contact 136 is increased as compared with the conventional relay, the following effects can be obtained.

In the conventional relay, the stationary contact is formed in a conical shape and the contact surface of the movable contact is flatly formed, so that the stationary contact and the movable contact come into point contact. Since the voltage applied from the battery unit to the fixed contact is high, when a fixed contact contacts the movable contact, a high current flows through the fixed contact and the movable contact to generate a strong electromagnetic repulsive force. As a result, The contacted fixed contact and the movable contact are separated.

However, in the present invention, since the contact surface 134a of the fixed contact 134 and the contact surface 136a of the movable contact 136 are both round, when the fixed contact 134 and the movable contact 136 contact each other, Contact is made. Accordingly, since the contact area increases compared to the point contact of the conventional relay, the intensity of the current flowing to the contact area per unit area decreases, and the electromagnetic repulsive force generated between the fixed contact 134 and the movable contact 136 decreases .

As described above, in the present invention, when the relay is driven, the contact area between the fixed contact 134 and the movable contact 136 is maximized, thereby preventing defects due to the electromagnetic repulsion force. That is, in the conventional relay, since the contact area between the stationary contact and the movable contact is small due to the point contact, the contact area between the stationary contact 134 and the movable contact 136 is increased compared with the conventional case. The electromagnetic repulsive force between the contact point 134 and the movable contact point 136 can be greatly reduced. As a result, the contact failure between the stationary contact point 134 and the movable contact point 136 due to the electromagnetic repulsion force can be prevented.

Therefore, the most important feature of the present invention is the increase in the contact area between the fixed contact 134 and the movable contact 136, and the configuration of the fixed contact 134 and the movable contact 136, But need not be limited to the structure shown.

5 is a cross-sectional view showing another structure of the fixed contact 134 and the movable contact 136 of the relay of the present invention. FIG. 5B is a plan view of the movable contact 136. FIG.

5A, the contact surface 136a of the movable contact 136 is formed in a round shape, and a plurality of protrusions 136b are formed on the contact surface 136a. The contact surface 134a of the fixed contact 134 has a round shape . At this time, the curvature of the contact surface 136a of the movable contact 136 is smaller than the curvature of the contact surface 134a of the fixed contact 134. [

Since the curvature of the contact surface 136a of the movable contact 136 is smaller than the curvature of the contact surface 134a of the fixed contact 134 when the relay contacts the fixed contact 134 and the movable contact 136, Only the tip portion of the contact surface 134a of the contact 134 comes into contact with the contact surface 136a of the movable contact 136. [ That is, the contact surface 136a of the movable contact 136 and the contact surface 134a of the fixed contact 134 are in point contact.

The contact surface 136a of the movable contact 136 is brought into point contact with the contact surface 134a of the fixed contact 134 and the protrusion 136b formed in the movable contact 136 is brought into contact with the contact surface 134a of the fixed contact 134 . At this time, the height of the protrusion 136b is set to be larger than the height of the movable contact 136 on the contact surface 136a, the curvature of the contact surface 136a of the movable contact 136, and the curvature of the contact surface 134a of the fixed contact 134 When the contact surface 136a of the movable contact 136 is in point contact with the contact surface 134a of the fixed contact 134, the projection 136b completely contacts the contact surface 134a of the fixed contact 134, .

The contact area between the fixed contact 134 and the movable contact 136 is not limited to the point contact but increases by the contact area of the projection so that the distance between the fixed contact 134 and the movable contact 136 The repulsive force can be reduced. As a result, it is possible to prevent the contact failure between the fixed contact 134 and the movable contact 136 due to the electromagnetic repulsion force.

5B is a plan view of the movable contact 136 showing the shape of the projection 136b. 5B, the protrusion 136b is formed in a circular shape on the contact surface 136a of the movable contact 136 and a plurality of the protrusions 136b are formed. Therefore, the fixed contact 134 and the movable contact 136, It is possible to sufficiently secure the contact area of the contact surface. Further, by adjusting the width of the projection 136b, it is possible to adjust the contact area where the projection 136b contacts the contact surface 134a of the fixed contact 134. [

In the drawing, two protrusions 136b are formed, but only one protrusion 136b or three or more protrusions 136b may be formed. Although the projection 136b is formed in a completely circular shape in the drawing, the projection 136b may be disposed only in a predetermined region along a circular shape at regular intervals.

In the drawing, the contact surface 134a of the movable contact 134a may be a flat surface rather than a rounded surface. In this case, by increasing the height of the protrusion 136b, the protrusion 136b can completely come into contact with the contact surface 134a of the movable contact 134, compared to when the protrusion 136b is rounded. Although the protrusion is formed on the contact surface 136a of the movable contact 136 in the above description, the protrusion may be formed on the contact surface 134a of the fixed contact 134a.

In other words, in the present invention, since the contact area between the movable contact and the fixed contact is increased to reduce the electromagnetic repulsion force, the size and formation position of the projection, the curvature of the movable contact and the fixed contact can be variously configured as needed .

Meanwhile, although the relays of the specific structure are described in the above detailed description, the present invention is not limited to the relays of this specific structure. The present invention is characterized in that the contact area between the movable contact and the fixed contact is increased to reduce the electromagnetic repulsion force. Therefore, if the movable contact and the fixed contact can be brought into contact with each other or the contact area can be increased by using the projection, relays of all known structures may be included in the present invention.

Further, although the above detailed description describes that the relays of the present invention are used in an electric vehicle, it is exemplified that relays are applied for convenience of explanation. Substantially, the relay of the present invention can be applied not only to an electric vehicle but also to a hybrid vehicle including both an electric vehicle and an engine, as well as to various industrial equipments and machines.

101: Battery section 103: Relay
104: vehicle control unit 105: converter
106: Startup unit 108: Battery management unit
130: Case 132: Housing
134: Fixed contact 136: Movable contact
134a, 136a: contact surface 136b:

Claims (12)

Fixed contact;
A movable contact which is brought into contact with and separated from the fixed contact;
A shaft connected to the movable contact to move the movable contact; And
And an actuator for driving the shaft,
And the stationary contact and the movable contact are in surface contact with each other. 2. The actuator according to claim 1,
An exciting coil for generating an electromagnetic force;
A stator and a movable element vertically disposed in the exciting coil;
And a return spring disposed between the stator and the mover and returning the mover back to the original position. 2. The relay of claim 1, wherein the stationary contact comprises a convex rounded contact surface with a set curvature and the movable contact comprises a concave rounded contact surface with a set curvature. The relay according to claim 1, wherein the stationary contact includes a concave shaped contact surface having a predetermined curvature, and the movable contact includes a convex contact surface having a set curvature. The relay according to claim 3 or 4, wherein the contact surface of the stationary contact and the contact surface of the movable contact have the same curvature or similar curvature. Fixed contact;
A movable contact which is brought into contact with and separated from the fixed contact;
At least one protrusion disposed at one of the stationary contact and the movable contact and contacting with a contact surface of the contact surface of the stationary contact and the contact surface of the movable contact;
A shaft connected to the movable contact to move the movable contact;
And an actuator configured to drive the shaft. The relay according to claim 6, wherein the projection is formed along the periphery of the fixed contact or the movable contact. The relay according to claim 6, wherein the contact surface of the movable contact and the contact surface of the stationary contact are point-contact and the contact is in point contact with the contact surface of the movable contact or the contact surface of the stationary contact. 7. The relay according to claim 6, wherein the contact surface of the movable contact and the contact surface of the stationary contact are rounded. The relay according to claim 9, wherein curvatures of the contact surfaces of the movable contact and the fixed contact are different from each other. 7. The relay according to claim 6, wherein one contact surface of the contact surface of the movable contact and the contact surface of the stationary contact is flat and the other contact surface is rounded. The relay according to claim 6, wherein the height of the projection is determined by the curvature of the contact surface of the movable contact with the contact surface of the fixed contact.
KR2020150004814U 2015-07-16 2015-07-16 Relay for deducing electrodynamic repulsion KR20170000358U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020150004814U KR20170000358U (en) 2015-07-16 2015-07-16 Relay for deducing electrodynamic repulsion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020150004814U KR20170000358U (en) 2015-07-16 2015-07-16 Relay for deducing electrodynamic repulsion

Publications (1)

Publication Number Publication Date
KR20170000358U true KR20170000358U (en) 2017-01-25

Family

ID=57964047

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2020150004814U KR20170000358U (en) 2015-07-16 2015-07-16 Relay for deducing electrodynamic repulsion

Country Status (1)

Country Link
KR (1) KR20170000358U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230060003A (en) * 2021-10-27 2023-05-04 (주)쉴드론 Switch contact of master controller for railway train

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230060003A (en) * 2021-10-27 2023-05-04 (주)쉴드론 Switch contact of master controller for railway train

Similar Documents

Publication Publication Date Title
CN103348126B (en) Motor vehicles including jump start device
US9887056B2 (en) Method of fabricating a relay
EP2996136B1 (en) Electric vehicle relay
EP2442342B1 (en) Electromagnetic switching device
RU2723678C2 (en) Power supply system and system control method
KR102440317B1 (en) Relay Switch device for turning on / off the large current of the battery pack
EP2770603B1 (en) Structure for holding electric shaver on charger
KR20170008047A (en) Relay for electric vehicle
WO2020031068A1 (en) Electromechanical switch with stabilized engagement between contacts
KR20170000358U (en) Relay for deducing electrodynamic repulsion
JP7211761B2 (en) engine starter and battery
KR20170000443U (en) Relay for deducing magnetic force
KR20170009349A (en) Relay of electronic vehicle for improved arc extinguish
KR20210010140A (en) Charging docking charger for unmanned driving car
KR102318852B1 (en) Apparatus for auxiliary contact of relay
CN215751973U (en) Contactor, vehicle charging and distribution system, charging pile and vehicle
CN212113581U (en) Relay with a movable contact
JP7042452B2 (en) Electromagnetic relay and control method
CN112313830B (en) Storage unit for an energy store of a motor vehicle and energy store for a motor vehicle
KR20170000357U (en) Relay having integrated yoak
CN115249600A (en) Relay with a movable contact
JP2017216826A5 (en)
KR20170044475A (en) Battery Relay
CN216929631U (en) Electricity supplementing device and electricity supplementing system
CN211150437U (en) Moving contact structure of direct current contactor

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment
X601 Decision of rejection after re-examination