Relay and relay system

Abstract

The utility model discloses a relay and relay system relates to relay technical field, wherein, the relay includes casing and detection connector, and the casing is equipped with positive pole and negative pole, be equipped with first pin and second pin in the detection connector, first pin with positive pole electricity is connected, second pin with negative pole electricity is connected, and the detection connector is used for the detection cooperation head of sticking detection module and is inserted to make two conducting members of detection cooperation head respectively with first pin and second pin electricity is connected. The utility model provides technical scheme can promote assembly efficiency, and avoids the attenuation of the connection torque of the conducting row and the relay.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, and in particular to a relay and a relay system. Background Technology

[0002] Relays are core safety components of power batteries, responsible for quickly disconnecting high-voltage circuits in charging, discharging, and fault scenarios. With increasing safety requirements for new energy vehicles, relay contact adhesion detection has become an essential function to prevent short-circuit risks caused by contact welding. Currently, the industry commonly uses an external detection circuit, which requires the OT terminal of the adhesion detection harness to be superimposed and locked onto the relay's electrode posts. However, this not only leads to low assembly efficiency but also easily causes torque attenuation between the conductor and the relay, resulting in relay overheating and erosion, potentially triggering battery pack thermal runaway. Utility Model Content

[0003] The main purpose of this invention is to propose a relay and relay system that aims to improve assembly efficiency while avoiding torque attenuation when connecting the busbar and the relay.

[0004] To achieve the above objectives, the relay proposed in this utility model includes:

[0005] A housing, wherein the housing is provided with a positive electrode and a negative electrode; and

[0006] The test connector has a first pin and a second pin. The first pin is electrically connected to the positive electrode, and the second pin is electrically connected to the negative electrode. The test connector is used for the insertion of the test mating head of the adhesion detection module, so that the two conductive parts of the test mating head are electrically connected to the first pin and the second pin, respectively.

[0007] In one embodiment, the housing is provided with a power connector, and the power connector and the detection connector are located on the same side wall of the housing.

[0008] In one embodiment, the detection connector is configured as a detection socket.

[0009] In one embodiment, the detection connector is configured as a recessed groove on the surface of the housing.

[0010] In one embodiment, the housing is provided with a reinforcing rib corresponding to the insertion groove, and the reinforcing rib is used to abut against the outer peripheral wall of the detection mating head.

[0011] In one embodiment, the cross-section of the detection connector is rectangular.

[0012] In one embodiment, the corners of the reinforcing rib are arc-shaped.

[0013] In one embodiment, the positive electrode has a positive terminal extending outward from the housing, the positive terminal being connected to a positive electrode side busbar, and the negative electrode has a negative terminal extending outward from the housing, the negative terminal being connected to a negative electrode side busbar.

[0014] In one embodiment, an isolation rib is provided between the positive terminal and the negative terminal.

[0015] This utility model also proposes a relay system, including an adhesion detection module and the aforementioned relay. The adhesion detection module is provided with a detection mating head, which is inserted into the detection connector.

[0016] The technical solution of this utility model involves setting a detection connector on the housing. The first pin of the detection connector is electrically connected to the positive terminal, and the second pin is electrically connected to the negative terminal. When connecting an adhesion detection module, the detection mating head of the adhesion detection module can be directly inserted into the detection connector. At this time, one conductive element on the detection mating head is electrically connected to the first pin, and the other conductive element is electrically connected to the second pin. This significantly improves the electrical connection efficiency between the adhesion detection module and the relay. Secondly, since the detection harness of the adhesion detection module does not need to be electrically connected to the electrode post, the conductive busbar can be individually locked to the relay electrode post. This avoids torque attenuation during the connection between the conductive busbar and the relay, thereby reducing the probability of relay overheating and battery pack thermal runaway. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of an embodiment of the relay provided by this utility model;

[0019] Figure 2 A simplified electrical schematic diagram of the internal and external components of the relay provided by this utility model;

[0020] Figure 3 This is a partial structural diagram of the relay system provided by this utility model.

[0021] Explanation of icon numbers:

[0022] 10. Relay; 100. Housing; 110. Positive terminal; 111. Positive terminal post; 120. Negative terminal; 121. Negative terminal post; 130. Isolation rib; 200. Detection connector; 210. First pin; 220. Second pin; 230. Reinforcing rib; 300. Power connector; 400. Positive side conductive busbar; 500. Negative side conductive busbar; 20. Detection mating head.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] Relays are core safety components of power batteries, responsible for quickly disconnecting high-voltage circuits in charging, discharging, and fault scenarios. With increasing safety requirements for new energy vehicles, relay contact adhesion detection has become an essential function to prevent short-circuit risks caused by contact welding. Currently, the industry commonly uses an external detection circuit, which requires the OT terminal of the adhesion detection harness to be superimposed and locked onto the relay's electrode posts. However, this not only leads to low assembly efficiency but also easily causes torque attenuation between the conductor and the relay, resulting in relay overheating and erosion, potentially triggering battery pack thermal runaway.

[0028] To solve the above problems, this utility model proposes a relay 10.

[0029] Please see Figures 1 to 3 In one embodiment of this utility model, the relay 10 includes a housing 100 and a detection connector 200. The housing 100 is provided with a positive electrode 110 and a negative electrode 120. The detection connector 200 is provided with a first pin 210 and a second pin 220. The first pin 210 is electrically connected to the positive electrode 110, and the second pin 220 is electrically connected to the negative electrode 120. The detection connector 200 is used for the insertion of the detection mating head 20 of the adhesion detection module, so that the two conductive parts of the detection mating head 20 are electrically connected to the first pin 210 and the second pin 220 respectively.

[0030] The technical solution of this utility model involves setting a detection connector 200 on the housing 100. The first pin 210 of the detection connector 200 is electrically connected to the positive electrode 110, and the second pin 220 is electrically connected to the negative electrode 120. When an adhesion detection module needs to be connected, the detection mating head 20 of the adhesion detection module can be directly inserted into the detection connector 200. At this time, one conductive element on the detection mating head is electrically connected to the first pin 210, and the other conductive element is electrically connected to the second pin 220. This greatly improves the electrical connection efficiency between the adhesion detection module and the relay 10. Secondly, since the detection harness of the adhesion detection module does not need to be electrically connected to the electrode post, the conductive busbar can be individually locked to the electrode post of the relay 10. This avoids torque attenuation when connecting the conductive busbar to the relay 10, thereby reducing the probability of overheating and burning of the relay 10 and thermal runaway of the battery pack.

[0031] In one embodiment, the housing 100 is provided with a power connector 300, which and the detection connector 200 are located on the same side wall of the housing 100. It can be understood that having the power connector 300 and the detection connector 200 on the same side wall of the housing 100 facilitates centralized storage of wires, thereby increasing the orderliness of the wires. However, this solution is not limited to this; in other embodiments, the power connector 300 and the detection connector 200 may not be located on the same side wall, but rather on adjacent side walls.

[0032] In this embodiment, the detection connector 200 is configured as a detection socket. It can be understood that the detection mating head 20 is configured as a detection plug corresponding to the detection socket. This reduces the processing complexity and improves the production efficiency of the relay 10. It can be understood that when the detection connector 200 is configured as a detection plug and the detection mating head is configured as a detection socket, if the insertion end of the detection plug is flush with the side wall of the housing 100, a clearance groove needs to be provided on the outer periphery of the detection plug to avoid the wall of the detection socket, allowing the detection connector 200 and the detection mating head to plug into each other. If the detection plug protrudes from the side wall of the housing 100, the detection connector 200 will protrude excessively from the side wall of the housing 100, increasing the size of the relay 10 and thus increasing the space requirements for installation. Of course, this solution is not limited to this; in other embodiments, the detection connector 200 can also be configured as a detection plug, and the detection mating head as a detection socket.

[0033] Furthermore, the detection connector 200 is configured as a recessed insertion groove on the surface of the housing 100, which prevents the detection connector 200 from protruding from the side wall of the housing 100, thereby making the structure of the relay 10 more compact. Of course, this solution is not limited to this. In other embodiments, the detection connector 200 can also be configured as a detection slot protruding from the surface of the housing 100.

[0034] Optionally, the housing 100 is provided with a reinforcing rib 230 corresponding to the insertion groove. The reinforcing rib 230 abuts against the outer peripheral wall of the detection mating head 20. It can be understood that when the detection mating head is inserted into the detection connector 200, the reinforcing rib 230 can restrict the circumferential displacement of the detection mating head, thereby increasing the connection stability between the detection connector 200 and the detection mating head 20. Of course, this solution is not limited to this. In other embodiments, the reinforcing rib 230 may not be provided.

[0035] Furthermore, the reinforcing rib 230 is integrally formed with the housing 100, which can increase the connection strength between the reinforcing rib 230 and the housing 100 and reduce the probability of the reinforcing rib 230 breaking.

[0036] Furthermore, in this embodiment, the cross-section of the detection connector 200 is rectangular, that is, the detection connector 200 is a rectangular connector. It can be understood that a rectangular plug can make more efficient use of space and avoid the redundant occupation of a circular plug. Of course, this solution is not limited to this; in other embodiments, the cross-section of the detection connector 200 may also be circular.

[0037] In this embodiment, the corners of the reinforcing rib 230 are arc-shaped, which can blunt the corners of the reinforcing rib and prevent the corners of the reinforcing rib 230 from scratching the operator.

[0038] Optionally, the positive electrode 110 has a positive electrode post 111 extending outward from the housing 100, the positive electrode post 111 being connected to the positive electrode side conductive bus 400, and the negative electrode 120 has a negative electrode post 121 extending outward from the housing 100, the negative electrode post 121 being connected to the negative electrode side conductive bus 500.

[0039] Optionally, in this embodiment, an isolation rib 130 is provided between the positive terminal 111 and the negative terminal 121. It is understood that when the relay 10 switches between high current or high voltage, an electric arc may occur between the contacts. The isolation rib 130 can increase the creepage distance between the positive terminal 111 and the negative terminal 121, preventing the electric arc from crossing the two poles and causing a short circuit. The isolation rib 130 increases the surface distance (creep distance) between the two poles through physical isolation, preventing moisture, dust, or contaminants from forming a conductive path between the electrodes and reducing the risk of leakage. The isolation rib 130 can also enhance the overall strength of the internal structure of the relay 10, preventing electrode displacement caused by vibration or impact. During installation or maintenance, the isolation rib 130 can prevent tools from accidentally contacting the positive and negative terminals 120 simultaneously, reducing the risk of human-caused short circuits. Of course, this solution is not limited to this; in other embodiments, the isolation rib 130 may not be provided between the positive terminal 111 and the negative terminal 121.

[0040] This utility model also proposes a relay system, which includes an adhesion detection module and a relay. The specific structure of the relay is as described in the above embodiments. Since this relay system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0041] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A relay, characterized in that, include: A housing, wherein the housing is provided with a positive electrode and a negative electrode; and The test connector has a first pin and a second pin. The first pin is electrically connected to the positive electrode, and the second pin is electrically connected to the negative electrode. The test connector is used for the insertion of the test mating head of the adhesion detection module, so that the two conductive parts of the test mating head are electrically connected to the first pin and the second pin, respectively.

2. The relay as described in claim 1, characterized in that, The housing is provided with a power connector, and the power connector and the detection connector are located on the same side wall of the housing.

3. The relay as described in claim 1, characterized in that, The detection connector is configured as a detection socket.

4. The relay as described in claim 3, characterized in that, The detection port is configured as a recessed insertion groove on the surface of the housing.

5. The relay as described in claim 4, characterized in that, The housing is provided with a reinforcing rib corresponding to the insertion groove, and the reinforcing rib is used to abut against the outer peripheral wall of the detection mating head.

6. The relay as described in claim 5, characterized in that, The cross-section of the detection connector is rectangular.

7. The relay as described in claim 6, characterized in that, The corners of the reinforcing ribs are arc-shaped.

8. The relay as described in claim 1, characterized in that, The positive electrode has a positive electrode post extending outward from the housing, the positive electrode post being used to connect to the positive electrode side conductive busbar, and the negative electrode has a negative electrode post extending outward from the housing, the negative electrode post being used to connect to the negative electrode side conductive busbar.

9. The relay as described in claim 8, characterized in that, An isolation rib is provided between the positive terminal and the negative terminal.

10. A relay system, characterized in that, It includes an adhesion detection module and a relay as described in any one of claims 1 to 9, wherein the adhesion detection module is provided with a detection mating head, and the detection mating head is inserted into the detection connector.

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