Relay and electrical device

Abstract

An electrical device, comprising a relay. The relay comprises an auxiliary contact loop, a temperature acquisition loop and a first control board, wherein the auxiliary contact loop and the temperature acquisition loop are respectively electrically connected to the first control board.

Description

Relay and electrical equipment

[0001] Cross-reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202411004852.8, filed on July 25, 2024, entitled “Relay and electrical equipment”, the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of relays, and in particular to a relay and an electrical equipment. BACKGROUND

[0004] At present, the high-voltage direct-current relay with auxiliary contacts has the main contact and auxiliary contact lead-out ends fixed on the ceramic respectively, and the metal particles are splashed during the breaking arc of the main contact, which causes the high-voltage breakdown of the auxiliary contact, and the main contact cannot monitor the abnormality of the main contact in time when the short circuit occurs in the special working condition, which causes the continuous high temperature and cannot guarantee the safety.

[0005] SUMMARY

[0006] The present disclosure aims to at least solve one of the technical problems existing in the prior art. To this end, the present disclosure provides a relay which can avoid the high-voltage breakdown of the auxiliary contact and effectively monitor the main contact when the short circuit occurs, so as to ensure the normal operation of the relay and further improve the safety of the relay.

[0007] The present disclosure further provides an electrical equipment.

[0008] The relay according to the present disclosure comprises an auxiliary contact circuit, a temperature acquisition circuit and a first control board, and the auxiliary contact circuit and the temperature acquisition circuit are electrically connected with the first control board respectively.

[0009] The relay according to the present disclosure, by connecting the first control board with the auxiliary contact circuit and the temperature acquisition circuit, when the auxiliary contact circuit and the temperature acquisition circuit are short-circuited or reach the end of life, the first control board can effectively monitor the state of the main contact, so as to ensure the normal operation of the relay and further improve the safety of the relay.

[0010] In some examples of the present disclosure, the auxiliary contact circuit comprises a magnetic switch and a first wire, and the first wire is electrically connected between the first control board and the magnetic switch.

[0011] In some examples of the present disclosure, the relay further comprises a magnet, the magnet is arranged at one end of the magnetic switch, and the magnet is movable towards a direction away from or adjacent to the magnetic switch, the magnetic switch is in an off state when the magnetic switch is affected by the magnetic field of the magnet, and the magnetic switch is in an on state when the magnetic switch is out of the magnetic field of the magnet.

[0012] In some examples of the present disclosure, the auxiliary contact circuit further comprises a second control board, the magnetic switch is electrically connected to the second control board, and the first control board is provided with a first connecting portion, and the first wire is electrically connected between the first connecting portion and the second control board.

[0013] In some examples of the present disclosure, the relay further comprises a relay main body, the first control board is arranged at an outer side wall of the relay main body, and the second control board is arranged at a bottom portion in the relay main body.

[0014] In some examples of the present disclosure, the relay further comprises a mounting bracket, and the second control board is fixed to the mounting bracket.

[0015] In some examples of the present disclosure, the relay further comprises a stationary contact, the temperature acquisition circuit comprises a thermistor, the thermistor is used for detecting the temperature at the stationary contact, and the thermistor is electrically connected to the first control board.

[0016] In some examples of the present disclosure, the relay further comprises a ceramic shell, the stationary contact is arranged at one end of the ceramic shell, the thermistor is attached to an outer surface of the ceramic shell, and the thermistor extends towards the stationary contact.

[0017] In some examples of the present disclosure, the thermistor comprises a probe, a second wire and a connecting terminal, the probe is arranged adjacent to the stationary contact, the second wire is electrically connected between the probe and the connecting terminal, the first control board is further provided with a second connecting portion, and the connecting terminal is electrically connected to the second connecting portion.

[0018] In some examples of the present disclosure, the relay further comprises a buffer pad, the buffer pad is provided with a stationary contact positioning hole and a detection groove, the stationary contact positioning hole and the detection groove are arranged in a spaced manner, the stationary contact is fitted in the stationary contact positioning hole, and at least part of the thermistor is arranged in the detection groove.

[0019] In some examples of the present disclosure, the buffer pad is a rubber structure.

[0020] In some examples of the present disclosure, the relay further comprises a coil assembly, the coil assembly comprising a coil frame and a coil body, the first control plate being fixed on the coil frame, and the coil body being electrically connected with the first control plate.

[0021] In some examples of the present disclosure, the first control plate is further provided with a fixing portion and a third connecting portion, the fixing portion being fixedly mounted with the coil frame, and the third connecting portion being electrically connected with the coil body.

[0022] In some examples of the present disclosure, the first control plate is further provided with a plurality of connectors, the plurality of connectors being arranged at intervals.

[0023] The electric device according to the present disclosure comprises the relay described above.

[0024] The vehicle provided by the present disclosure adopts the mode that the first control plate is connected with the auxiliary contact loop and the temperature acquisition loop, when the auxiliary contact loop and the temperature acquisition loop appear short circuit or reach the end of life, the first control plate can effectively synchronously monitor the state of the main contact, so as to ensure the normal work of the relay, and further improve the safety of the relay.

[0025] Additional aspects and advantages of the present disclosure will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily appreciated from the following description, including the accompanying drawings.

[0027] Fig. 1 is a first angle sectional view of a relay according to an embodiment of the present disclosure;

[0028] Fig. 2 is a second angle sectional view of a relay according to an embodiment of the present disclosure;

[0029] Fig. 3 is a structural schematic view of a relay according to an embodiment of the present disclosure;

[0030] Fig. 4 is a partial structural schematic view of a relay according to an embodiment of the present disclosure;

[0031] Fig. 5 is a structural schematic view of a thermistor;

[0032] Fig. 6 is a schematic block diagram of an electric device.

[0033] 100, relay; 200, electrical equipment; 10, first control board; 11, magnetic switch; 12, first wire; 13, magnet; 14, second control board; 15, mounting bracket; 16, static contact; 17, thermistor; 18, ceramic shell; 19, probe; 20, second wire; 21, connecting terminal; 22, buffer pad; 221, static contact positioning hole; 222, detection groove; 23, coil assembly; 231, coil skeleton; 232, coil body; 24, connector; 25, first connecting part; 26, second connecting part; 27, third connecting part; 28, fixed part; 30, moving iron core; 31, return spring; 32, push rod; 33, moving contact plate; 34, static iron core; 40, relay main body; 51, auxiliary contact circuit; 52, temperature acquisition circuit. DETAILED DESCRIPTION

[0034] Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings described in the embodiments of the present disclosure are exemplary.

[0035] The relay 100 according to the embodiments of the present disclosure is described below with reference to FIGS. 1-5, which is applied to the electrical equipment 200, for example, a vehicle.

[0036] As shown in FIGS. 2 and 3, the relay 100 according to the present disclosure includes the auxiliary contact circuit 51, the temperature acquisition circuit 52, and the first control board 10, and the auxiliary contact circuit 51 and the temperature acquisition circuit 52 are respectively electrically connected with the first control board 10.

[0037] It can be understood that the auxiliary contact circuit 51, the temperature acquisition circuit 52, and the first control board 10 constitute the main structure of the relay 100, the auxiliary contact circuit 51 can realize the functions of signal transmission and control, the temperature acquisition circuit 52 can accurately measure and record the temperature, and the first control board 10 is connected with the auxiliary contact circuit 51 and the temperature acquisition circuit 52, respectively. This setting can make the first control board 10 effectively monitor the state of the main contact synchronously, and when the auxiliary contact circuit 51 and the temperature acquisition circuit 52 are short-circuited or reach the end of life, the first control board 10 can ensure the normal work of the relay 100.

[0038] Therefore, by connecting the first control board 10 with the auxiliary contact circuit 51 and the temperature acquisition circuit 52, the first control board 10 can effectively monitor the state of the main contact synchronously when the auxiliary contact circuit 51 and the temperature acquisition circuit 52 are short-circuited or reach the end of life, thereby ensuring the normal work of the relay 100, and further improving the safety of the relay 100.

[0039] As shown in FIGS. 1-3, the auxiliary contact circuit 51 includes the magnetic switch 11 and the first wire 12, which is electrically connected between the first control panel 10 and the magnetic switch 11. That is, the magnetic switch 11 and the first wire 12 constitute the main structure of the auxiliary contact circuit 51, one end of the first wire 12 is connected to the first control panel 10, and the other end of the first wire 12 is welded to the magnetic switch 11, so that the first control panel 10 and the magnetic switch 11 can be connected, and the first control panel 10 can effectively monitor the state of the main contact.

[0040] In addition, as shown in FIG. 1, the relay 100 further includes the magnet 13, which is arranged at one end of the magnetic switch 11 and can move away from or close to the magnetic switch 11. When the magnetic switch 11 is affected by the magnetic field of the magnet 13, the magnetic switch 11 is in an off state; when the magnetic switch 11 is out of the magnetic field of the magnet 13, the magnetic switch 11 is in an on state.

[0041] It can be understood that the magnet 13 is arranged at one side of the magnetic switch 11, and the magnet 13 can be close to or away from the magnetic switch 11. In this way, the magnet 13 can control the on-off of the magnetic switch 11, so that the magnetic switch 11 is off when the magnet 13 is close to the magnetic switch 11, and the magnetic switch 11 is on when the magnet 13 is away from the magnetic switch 11, thereby ensuring the normal operation of the relay 100 through the on-off of the magnetic switch 11.

[0042] In addition, as shown in FIG. 4, the auxiliary contact circuit 51 further includes the second control panel 14, and the magnetic switch 11 is electrically connected to the second control panel 14. The first control panel 10 is provided with a first connecting portion, and the first wire 12 is electrically connected between the first connecting portion and the second control panel 14.

[0043] That is, the two ends of the magnetic switch 11 are welded to the second control panel 14, the first control panel 10 is provided with the first connecting portion, one end of the first wire 12 is connected to the first connecting portion, and the other end of the first wire 12 is connected to the second control panel 14, so that the auxiliary contact circuit 51 is formed between the second control panel 14 and the magnetic switch 11, and the first control panel 10 can monitor the auxiliary contact circuit 51.

[0044] In addition, as shown in the drawings, the relay 100 further comprises a relay main body 40, the first control board 10 is arranged on the outer side wall of the relay main body 40, and the second control board 14 is arranged on the bottom inside the relay main body 40. It can be understood that the first control board 10 is arranged on the side wall of the relay main body 40, and the second control board 14 is arranged on the bottom of the relay main body 40. In this way, the first control board 10 is convenient to connect with the auxiliary contact loop 51 and the temperature acquisition loop 52, and the second control board 14 is convenient to connect with the magnetic switch 11, so that the arrangement structure of the relay 100 can be optimized, and the performance of the relay 100 can be ensured.

[0045] In addition, as shown in FIG. 1, the relay 100 further comprises a mounting bracket 15, and the second control board 14 is fixed on the mounting bracket 15. It can be understood that the mounting bracket 15 limits the second control board 14, so that the second control board 14 is convenient to arrange in the relay 100, and the second control board 14 and the mounting bracket 15 are fastened and connected through self-tapping screws, so that the mounting and dismounting of the second control board 14 relative to the mounting bracket 15 is convenient.

[0046] In addition, as shown in FIGS. 1-3 and 5, the relay 100 further comprises a static contact 16, and the temperature acquisition loop 52 comprises a thermistor 17 for detecting the temperature of the static contact 16, and the thermistor 17 is electrically connected with the first control board 10. That is, the thermistor 17 is connected with the first control board 10, and the thermistor 17 is arranged close to the static contact 16, so that the thermistor 17 can detect the temperature of the static contact 16, and then the temperature rise measured data of the rated current, the half-rated current and different multiple short-circuit currents are fed back. When the temperature rise of the multiple short-circuit current occurs, the first control board 10 controls whether to disconnect the loop, so that the normal work of the relay 100 can be ensured.

[0047] In addition, as shown in FIGS. 1-3, the relay 100 further comprises a ceramic shell 18, the static contact 16 is arranged at one end of the ceramic shell 18, the thermistor 17 is attached to the outer surface of the ceramic shell 18, and the thermistor 17 extends towards the static contact 16. It can be understood that the static contact 16 is arranged at one end of the ceramic shell 18, and the thermistor 17 is attached to the outer surface of the ceramic shell 18, so that the internal design of the relay 100 is optimized, the volume of the relay 100 is reduced, the cost is saved, and the thermistor 17 extends towards the static contact 16. In this way, the thermistor 17 can detect the temperature of the static contact 16, and then the temperature rise measured data of the rated current, the half-rated current and different multiple short-circuit currents are fed back. When the temperature rise of the multiple short-circuit current occurs, the first control board 10 controls whether to disconnect the loop, so that the normal work of the relay 100 can be ensured.

[0048] In addition, as shown in FIG. 5, the thermistor 17 comprises a probe 19, a second wire 20 and a connecting terminal 21, the probe 19 is arranged adjacent to the static contact 16, the second wire 20 is electrically connected between the probe 19 and the connecting terminal 21, and the first control board 10 is further provided with a second connecting portion, and the connecting terminal 21 is electrically connected with the second connecting portion.

[0049] That is, the probe 19, the second wire 20 and the connecting terminal 21 constitute the main structure of the thermistor 17, the probe 19 is arranged adjacent to the static contact 16, so that the probe 19 can detect the temperature of the static contact 16, one end of the second wire 20 is connected with the probe 19, the other end of the second wire 20 is connected with the connecting terminal 21, the first control board 10 is provided with a second connecting portion, and the connecting terminal 21 is connected with the second connecting portion, so that after the probe 19 detects the temperature of the static contact 16, the temperature rise of the rated current, the half rated current and the different multiple short-circuit currents can be fed back to the first control board 10 through the connecting terminal 21, and when the temperature rise of the multiple short-circuit current occurs, the first control board 10 controls whether to disconnect the circuit, so as to ensure the normal work of the relay 100.

[0050] In addition, as shown in FIG. 1 and FIG. 3, the relay 100 further comprises a buffer pad 22, the buffer pad 22 is provided with a static contact positioning hole 221 and a detection groove 222, the static contact positioning hole 221 and the detection groove 222 are arranged in a spaced manner, the static contact 16 is fitted in the static contact positioning hole 221, and at least part of the thermistor 17 is arranged in the detection groove 222.

[0051] It can be understood that the static contact positioning hole 221 and the detection groove 222 are arranged on the buffer pad 22, so that the buffer pad 22 can position the static contact 16 and the thermistor 17, thereby facilitating the installation of the static contact 16 and the thermistor 17 in the buffer pad 22, and the static contact positioning hole 221 and the detection groove 222 are arranged in a spaced manner, so that the static contact 16 and the thermistor 17 can be arranged adjacent to each other, thereby facilitating the thermistor 17 to detect the temperature of the static contact 16. For example, the buffer pad 22 is a rubber structure.

[0052] In addition, as shown in FIG. 1 and FIG. 2, the relay 100 further comprises a coil assembly 23, the coil assembly 23 comprises a coil skeleton 231 and a coil body 232, the first control board 10 is fixed on the coil skeleton 231, and the coil body 232 is electrically connected with the first control board 10.

[0053] That is, the coil skeleton 231 and the coil body 232 constitute the main body of the coil assembly 23, the coil skeleton 231 can limit the first control board 10, thereby facilitating the installation of the first control board 10 in the relay 100, and the coil body 232 is connected with the first control board 10, thereby ensuring the normal work of the first control board 10.

[0054] In addition, as shown in FIGS. 1 and 2, the first control plate 10 is further provided with a fixing portion 28 and a third connecting portion, the fixing portion 28 is fixedly installed with the coil framework 231, and the third connecting portion is electrically connected with the coil body 232. It can be understood that the fixing portion 28 and the third connecting portion are arranged on the first control plate 10, the coil framework 231 can limit the fixing portion 28, so that the fixing portion 28 and the coil framework 231 are connected, thereby facilitating the installation of the first control plate 10 on the coil framework 231, and the third connecting portion is connected with the coil body 232, thereby ensuring the normal work of the first control plate 10.

[0055] In addition, as shown in FIG. 3, the first control plate 10 is further provided with a plurality of connectors 24, which are arranged at intervals. That is, the plurality of connectors 24 are arranged in the first control plate 10, so that the first control plate 10 can realize the functions of low-voltage control power input, contact monitoring and temperature rise monitoring, and can also optimize the occupied volume of the relay 100, thereby saving costs.

[0056] Specifically, the working process of the relay 100 is as follows: when the external power input low voltage to the coil assembly 23, the coil assembly 23 generates an electromagnetic field drive, the moving iron core 30 is compressed under the external electromagnetic force drive Reset spring 31, so that the reset spring 31 generates an upward movement force, the push rod 32 is welded with the iron core, the push rod 32 drives the moving contact plate 33 to move upward, contacts the static contact 16 and continues to compress the reset spring 31, so that the reset spring 31 generates an upward movement force, the moving iron core 30 and the static iron core 34 movement distance is greater than the moving contact plate 33 and the static contact 16, otherwise stop working, and the magnet 13 is located in the moving iron core 30, so that the magnet 13 and the moving iron core 30 move together, the magnetic switch 11 is affected by the magnetic field of the magnet 13, at this time the magnetic switch 11 is in the off state, when the moving iron core 30 and the magnet 13 move upward, the magnetic switch 11 is out of the bondage of the magnetic field, at this time the magnetic switch 11 is in the on state.

[0057] According to the power utilization equipment 200 of the present disclosure, as shown in FIG. 6, the power utilization equipment 200 comprises the relay 100 of any one of the above embodiments. By connecting the first control plate 10 to the auxiliary contact loop 51 and the temperature acquisition loop 52, when the auxiliary contact loop 51 and the temperature acquisition loop 52 are short-circuited or reach the end of life, the first control plate 10 can effectively monitor the state of the main contact, thereby ensuring the normal work of the relay 100, and further improving the safety of the relay 100.

[0058] In the description of the disclosure, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the disclosure.

[0059] In the description of the disclosure, "first feature" and "second feature" can include one or more of the features. In the description of the disclosure, the meaning of "a plurality of" is two or more. In the description of the disclosure, the first feature "above" or "below" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. In the description of the disclosure, the first feature "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature.

[0060] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example.

[0061] Although the embodiments of the disclosure have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the disclosure, and the scope of the disclosure is defined by the claims and their equivalents.

Claims

1. A relay (100), characterized by The utility model relates to a relay, which comprises: an auxiliary contact circuit (51); a temperature acquisition circuit (52); a first control board (10), the auxiliary contact circuit (51) and the temperature acquisition circuit (52) are electrically connected with the first control board (10) respectively.

2. The relay (100) according to claim 1, characterized in that The auxiliary contact circuit (51) comprises: a magnetic switch (11); and a first wire (12) electrically connected between the first control board (10) and the magnetic switch (11).

3. The relay (100) according to claim 2, characterized in that Further comprising a magnet (13) arranged at one end of the magnetic switch (11), and the magnet (13) can move towards the direction away from or adjacent to the magnetic switch (11), wherein, when the magnetic switch (11) is affected by the magnetic field of the magnet (13), the magnetic switch (11) is in an off state; and when the magnetic switch (11) is out of the magnetic field of the magnet (13), the magnetic switch (11) is in an on state.

4. The relay (100) according to claim 2 or 3, characterized in that The auxiliary contact circuit (51) further comprises a second control board (14), the magnetic switch (11) is electrically connected on the second control board (14), the first control board (10) is provided with a first connecting part (25), and the first wire (12) is electrically connected between the first connecting part (25) and the second control board (14).

5. The relay (100) according to claim 4, characterized in that Further comprising a relay main body (40), the first control board (10) is arranged on the outer wall of the relay main body (40), and the second control board (14) is arranged on the bottom in the relay main body (40).

6. The relay (100) according to claim 4 or 5, characterized in that Further comprising a mounting bracket (15), the second control board (14) is fixed on the mounting bracket (15).

7. The relay (100) according to any one of claims 1-6, characterized by Further comprising a static contact (16), the temperature acquisition circuit (52) comprises a thermistor (17) for detecting the temperature at the static contact (16), and the thermistor (17) is electrically connected with the first control board (10).

8. The relay (100) according to claim 7, characterized in that Further comprising a ceramic shell (18), the static contact (16) is arranged at one end of the ceramic shell (18), the thermistor (17) is attached to the outer surface of the ceramic shell (18), and the thermistor (17) extends towards the static contact (16).

9. The relay (100) according to claim 7 or 8, characterized in that The thermistor (17) comprises: a probe (19) arranged adjacent to the static contact (16); a second wire (20) electrically connected between the probe (19) and a connecting terminal (21); and the connecting terminal (21), the first control board (10) is further provided with a second connecting part (26), and the connecting terminal (21) is electrically connected with the second connecting part (26).

10. The relay (100) according to any one of claims 7-9, characterized in that Further comprising: a buffer pad (22) provided with a static contact positioning hole (221) and a detection groove (222), the static contact positioning hole (221) and the detection groove (222) are arranged at intervals, the static contact (16) is fitted in the static contact positioning hole (221), and at least part of the thermistor (17) is arranged in the detection groove (222).

11. The relay (100) according to claim 10, characterized in that The buffer pad (22) is a rubber structure.

12. The relay (100) according to any one of claims 1-11, characterized by Further included is a coil assembly (23) comprising a coil skeleton (231) and a coil body (232), the first control plate (10) being fixed on the coil skeleton (231), and the coil body (232) being electrically connected with the first control plate (10).

13. The relay (100) according to claim 12, characterized in that The first control plate (10) is further provided with a fixing portion (28) and a third connecting portion (27), the fixing portion (28) being fixedly mounted with the coil skeleton (231), and the third connecting portion (27) being electrically connected with the coil body (232).

14. The relay (100) according to any one of claims 1-13, characterized by The first control plate (10) is further provided with a plurality of connectors (24), the plurality of connectors (24) being arranged at intervals.

15. An electrical device (200), characterized by Comprising: The relay (100) according to any one of claims 1-14.

Images