Terminal connector and vulcanization early warning method thereof

Abstract

The present invention relates to the technical field of connectors, and discloses a terminal connector and a vulcanization early warning method thereof. The terminal connector comprises a male socket housing and a monitoring membrane structure; the male socket housing comprises a first surface; a plurality of pins are arranged on the first surface; a preset distance exists between the monitoring membrane structure and the pins; the monitoring membrane structure comprises a stacked base layer and a positive and negative electrode layer; the positive and negative electrode layers comprise a positive electrode and a negative electrode; the distance between the positive electrode and the negative electrode is less than or equal to the distance between any adjacent pins with a voltage difference among the plurality of pins; the positive electrode and the negative electrode are connected to a line monitoring device, and the line monitoring device is used to monitor the impedance or current between the positive electrode and the negative electrode. Thus, the accuracy of the monitoring controller for vulcanization can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a terminal connector and a vulcanization early warning method thereof. Background Art

[0002] As the electronic and electrical architecture of a vehicle evolves from discrete to centralized, the complexity of domain controllers is increasing. Correspondingly, the connection terminals of a single domain controller are becoming increasingly dense.

[0003] During vehicle driving and parking, it is difficult for the controller and wiring harness terminal connector to be completely sealed and isolated from the outside world. For the parts in contact with the air, depending on the environment in which the vehicle is located, there is a certain probability that it will be placed in a harsh environment with high temperature, humidity and sulfurized gas, which is prone to sulfurization risks and requires early warning monitoring. At the same time, if the voltage difference between the wiring harness pins is large, creepage effect will occur. When the high-voltage and low-voltage pins are too close, conductive crystal dendrites will also be generated, causing short circuit failure.

[0004] Existing solutions generally use methods such as conformal coating to circumvent this problem. However, since wiring harness terminals and onboard connectors require good conductivity and the space is small, spraying conformal coating will inevitably cause the PIN pins to be contaminated by the conformal coating and affect the conductivity.

[0005] Another solution is to use gas monitoring to warn of pollution in the surrounding environment. However, gas monitoring instruments are expensive and can only detect gas anomalies, but cannot monitor the tendency of wire harness terminals and single boards to produce vulcanization. Summary of the invention

[0006] The present invention aims to improve the technical problem that the prior art cannot accurately predict and monitor the vulcanization risk of dense wiring harness terminals or single boards.

[0007] In order to solve the above technical problems, the present application discloses a terminal connector, which includes:

[0008] A male socket housing, the male socket housing comprising a first surface; a plurality of pins are provided on the first surface;

[0009] A monitoring membrane structure, wherein the monitoring membrane structure is at a first preset distance from the pin; the monitoring membrane structure comprises a stacked base layer and positive and negative electrode layers; the positive and negative electrode layers comprise a positive electrode and a negative electrode; the distance between the positive electrode and the negative electrode is less than or equal to the distance between any adjacent pins among the multiple pins and having a voltage difference; the positive electrode and the negative electrode are connected to a line monitoring device, and the line monitoring device is used to monitor the impedance or current between the positive electrode and the negative electrode.

[0010] Optionally, the positive electrode includes a plurality of sub-positive electrodes;

[0011] The negative electrode includes a plurality of sub-negative electrodes;

[0012] The plurality of sub-positive electrodes are arranged alternately with the plurality of sub-negative electrodes.

[0013] Optionally, the positive and negative electrode layers include a first electrode set and a second electrode set;

[0014] The sub-positive electrodes and the sub-negative electrodes in the first electrode set are arranged alternately along a first direction;

[0015] The arrangement of the sub-positive electrodes and the sub-negative electrodes in the second electrode set is opposite to that of the first electrode set.

[0016] Optionally, the plurality of sub-positive electrodes are arranged at intervals along the second direction;

[0017] The plurality of negative sub-electrodes are arranged at intervals along the second direction;

[0018] There is a second preset distance between the adjacent sub-positive electrodes and the adjacent sub-negative electrodes; the second preset distance is less than or equal to the distance between any adjacent pins of the plurality of pins that have a voltage difference.

[0019] Optionally, the monitoring membrane structure further includes a positive connection electrode and a negative connection electrode;

[0020] The positive connection electrode is connected to the plurality of sub-positive electrodes and the negative electrode of the line monitoring device;

[0021] The negative connection electrode is connected to the plurality of sub-negative electrodes and the positive electrode of the line monitoring device.

[0022] Optionally, a preset crystal film is also provided on the base layer;

[0023] One end of the preset crystal film is connected to the positive electrode, and the other end of the preset crystal film is connected to the negative electrode;

[0024] The current of the conductive loop formed by the positive electrode, the preset crystal film and the negative electrode is less than the preset current;

[0025] The material of the predetermined crystal film includes sulfide crystals.

[0026] Optionally, the monitoring membrane structure is located on the first surface.

[0027] Optionally, the monitoring membrane structure includes a first monitoring membrane structure and a second monitoring membrane structure;

[0028] The distance between the positive electrode and the negative electrode in the first monitoring membrane structure is greater than or equal to the distance between the positive electrode and the negative electrode in the second monitoring membrane structure.

[0029] The present application discloses, on the other hand, a terminal connector vulcanization monitoring system, which includes a line monitoring device and the above-mentioned terminal connector.

[0030] On the other hand, the present application also discloses a terminal connector vulcanization early warning method, which is applied to the terminal connector vulcanization monitoring system. The method comprises:

[0031] receiving a current value of the monitoring membrane structure sent by the line monitoring device;

[0032] If the current value is greater than or equal to the preset current value, an alarm message is generated.

[0033] By adopting the above technical solution, the terminal connector provided by the present application has the following beneficial effects:

[0034] The terminal connector includes a male socket shell and a monitoring membrane structure; the male socket shell includes a first surface; a plurality of pins are arranged on the first surface; the monitoring membrane structure is at a preset distance from the pin; the monitoring membrane structure includes a stacked base layer and a positive and negative electrode layer; the positive and negative electrode layers include a positive electrode and a negative electrode; the distance between the positive electrode and the negative electrode is less than or equal to the distance between any adjacent pins with a voltage difference among the plurality of pins; the positive electrode and the negative electrode are connected to a line monitoring device, and the line monitoring device is used to monitor the impedance or current between the positive electrode and the negative electrode. Therefore, when conductive crystals grow between the pins of the connector, since the distance between the positive and negative electrodes on the monitoring membrane structure is less than or equal to the pin spacing, the conductive crystals between the positive and negative electrodes grow to a preset thickness at a faster speed, and the current between the positive and negative electrodes can be monitored by the line monitoring device, but when the current is greater than the preset threshold, the personnel are reminded to replace the connector, and the structure of the terminal connector can effectively improve the monitoring accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 This is a schematic diagram of the structure of an optional terminal connector of the present application;

[0037] Figure 2 A cross-sectional view of an optional terminal connector for this application;

[0038] Figure 3 A top view of an optional monitoring membrane structure for this application;

[0039] Figure 4 This is another optional top view of the monitoring membrane structure of the present application;

[0040] Figure 5 This is a cross-sectional view of another optional terminal connector of the present application.

[0041] The following is a supplementary description of the attached drawings:

[0042] 1-male socket shell; 11-first side; 12-pin; 2-monitoring membrane structure; 21-base layer; 22-positive and negative electrode layers; 221-positive electrode; 2211-sub-positive electrode; 222-negative electrode; 2221-sub-negative electrode; 223-first electrode set; 224-second electrode set; 23-positive connecting electrode; 24-negative connecting electrode; 25-preset crystal film. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may include one or more of the features explicitly or implicitly. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0045] At present, the number of wiring harness terminals on the terminal connector of the controller on the vehicle is relatively small, generally about 8. However, with the increase in the integration and number of controllers, some high-speed buses will be used between the boards inside the controller or between the controllers, making the required wiring harness terminal density higher. The number of terminals of a terminal connector increases by orders of magnitude, which increases the pin density on the terminal connector while keeping the occupied volume unchanged. In harsh environments (such as high temperature, high humidity, sulfide, etc.), the pins are prone to sulfide corrosion, resulting in sulfide crystals, which in turn cause some pins to short-circuit, affecting the normal operation of the device. Although the prior art can reduce the corrosion of the pins to a certain extent by spraying three-proof coatings, this will also reduce the conductivity of the pins, and this method cannot effectively play a protective role as time goes by; in other schemes, a sulfide gas monitor will be set up to monitor the gas in the environment. However, this method can only detect gas abnormalities and cannot detect the sulfide of the wiring harness terminals and boards. It has the disadvantages of a small detection scope and low accuracy in detecting the sulfide of the terminals and boards. For this reason, Figure 1-2 As shown, Figure 1 This is a schematic diagram of the structure of an optional terminal connector of the present application; Figure 2 This is a cross-sectional view of an optional terminal connector of the present application. On one hand, the present application discloses a terminal connector, which includes a male socket housing 1 and a monitoring membrane structure 2; the male socket housing 1 includes a first surface 11; a plurality of pins 12 are provided on the first surface 11; a first preset distance exists between the monitoring membrane structure 2 and the pins 12; the monitoring membrane structure 2 includes a stacked base layer 21 and a positive and negative electrode layer 22; the positive and negative electrode layer 22 includes a positive electrode 221 and a negative electrode 222; the distance between the positive electrode 221 and the negative electrode 222 is less than or equal to the distance between any adjacent pins 12 with a voltage difference among the plurality of pins 12; the positive electrode 221 and the negative electrode 222 are connected to a line monitoring device, and the line monitoring device is used to monitor the impedance or current between the positive electrode 221 and the negative electrode 222.

[0046] Based on the terminal connector provided by the present application, when the terminal connector is in a harsh environment such as high temperature, high humidity, high salt or sulfide, there will be a situation where conductive crystals grow between the pins 12 of the connector. Since the distance between the positive and negative electrodes on the monitoring membrane structure 2 is smaller than the spacing between the pins 12, the conductive crystals between the positive and negative electrodes grow to a preset thickness faster, and the current between the positive and negative electrodes can be monitored by the line monitoring device. However, when the current is greater than the preset threshold, the personnel are reminded to replace the connector, and since the monitoring membrane structure 2 is located near the pins 12, the structure based on the above-mentioned terminal connector can effectively improve the monitoring accuracy. Compared with the above-mentioned prior art, it can not only ensure the stability of the electrical performance of the terminal connector, but also avoid the expensive gas monitoring equipment, and has the advantages of low material cost, less construction difficulty and high monitoring accuracy.

[0047] It should be noted that, for this terminal connector, except in the above-mentioned harsh environment, there will generally be a risk of short circuit between the pins 12 with a voltage difference after a certain thickness of conductive crystals are grown. The pin 12 spacing mentioned above in this application is the pin 12 spacing with a voltage difference.

[0048] Optionally, the conductive crystal may be a sulfide crystal, that is, produced by sulfide corrosion. It should be noted that the conditions for producing the conductive crystal are different depending on the material of the pin 12 .

[0049] Optionally, the monitoring membrane structure 2 can be located on the above-mentioned first surface 11, or can be arranged in a position adjacent to the pin 12, such as the inner surface or outer surface of the male socket shell 1, and can also be used as a connector inside the domain controller device. If multiple controllers are in the form of device-level packaging, the monitoring membrane structure 2 can be arranged at the entrance of the air duct.

[0050] Optionally, in order to further improve the detection sensitivity, the voltage difference between the positive and negative electrodes on the monitoring membrane structure 2 is greater than or equal to the voltage difference between the target adjacent pins 12 among the multiple pins 12, and the target current limiting pins 12 are two pins 12 with a pressure difference, and the pressure difference between them is the largest among the adjacent pins 12 among the multiple pins 12. As a result, in a humid environment with pollution such as sulfidation, the growth rate of sulfide crystals between the positive and negative electrodes in the above monitoring membrane structure 2 is faster than the growth rate of dendrites between the pins 12 in the terminal connector, and because the distance between the positive electrode 221 and the negative electrode 222 is less than or equal to the distance between any adjacent pins 12 with a voltage difference among the multiple pins 12, in a humid environment with pollution such as sulfidation, the time point when a short circuit or specific impedance is generated between the positive and negative electrodes of the above monitoring membrane structure 2 due to the growth of sulfide crystals is earlier than the time point between the pins 12 on the terminal connector. Therefore, when the above-mentioned pressure difference change is detected, an alarm is issued locally in the vehicle through the on-board central computing unit, or reported to the cloud server through 5G, V2X and other means.

[0051] In one possible implementation, see Figure 3 , Figure 3 This is a top view of an optional monitoring membrane structure of the present application. The positive electrode 221 includes a plurality of sub-positive electrodes 2211; the negative electrode 222 includes a plurality of sub-negative electrodes 2221; the plurality of sub-positive electrodes 2211 and the plurality of sub-negative electrodes 2221 are arranged alternately. In a possible embodiment, the positive and negative electrode layer 22 includes a first electrode set 223 and a second electrode set 224; the sub-positive electrodes 2211 and the sub-negative electrodes 2221 in the first electrode set 223 are arranged along a first direction (such as Figure 3 The arrangement of the sub-positive electrodes 2211 and the sub-negative electrodes 2221 in the second electrode set 224 is opposite to that of the first electrode set 223. This arrangement makes the vicinity of the sub-positive electrodes 2211 all surrounded by sub-negative electrodes 2221, which can improve the monitoring effect, especially if Figure 3 The arrangement shown, namely, array arrangement, enables the first electrode set 223 and the second electrode set 224 to be alternately arranged along a direction perpendicular to the first direction, so that the sub-positive electrode 2211 is surrounded by sub-negative electrodes 2221 .

[0052] In another possible implementation manner, in order to improve the application flexibility of the terminal connector of the present application. Figure 4 , Figure 4 This is a top view of another optional monitoring membrane structure of the present application. The plurality of sub-positive electrodes 2211 are arranged along the second direction (eg Figure 4The plurality of sub-negative electrodes 2221 are arranged at intervals along the second direction; there is a second preset distance between adjacent sub-positive electrodes 2211 and sub-negative electrodes 2221; the second preset distance is smaller than the distance between any adjacent pins 12 having a voltage difference among the plurality of pins 12.

[0053] The first direction and the second direction may also be the x-axis direction or any other direction, which is not limited here.

[0054] In one possible implementation, see Figure 3 The monitoring membrane structure 2 also includes a positive connection electrode 23 and a negative connection electrode 24; the positive connection electrode 23 is connected to the multiple sub-positive electrodes 2211 and the negative electrode of the line monitoring device; the negative connection electrode 24 is connected to the multiple negative electrodes 222 and the positive electrode of the line monitoring device.

[0055] Optionally, the multiple sub-positive electrodes 2211 can be connected in sequence to form a pathway and then connected to the positive connection electrode 23, and the multiple sub-negative electrodes 2221 can be connected in sequence to form a pathway and then connected to the negative connection electrode 24; of course, the positive connection electrode 23 can be connected to multiple sub-positive electrodes 2211 in sequence, and the negative connection electrode 24 can be connected to multiple sub-negative electrodes 2221 in sequence.

[0056] In one possible implementation, participation Figure 5 , Figure 5 This is a cross-sectional view of another optional terminal connector of the present application. A preset crystal film 25 is also provided on the base layer 21; one end of the preset crystal film 25 is connected to the positive electrode 221, and the other end of the preset crystal film 25 is connected to the negative electrode 222; the current of the conductive loop formed by the positive electrode 221, the preset crystal film 25 and the negative electrode 222 is less than the preset current; the material of the preset crystal film 25 includes sulfide crystals. Compared with the structure without the preset crystal film 25, the step amplitude from open circuit to short circuit can be reduced, and a small current is continuously or intermittently generated at the initial stage of operation. When the current I is greater than or equal to the preset current I0, the control unit can generate corresponding alarm information. According to the different preset current values, the alarm information is also different, which can be a warning type alarm information or an alarm information that the connector needs to be replaced.

[0057] Optionally, the sulfide crystals may be copper sulfide or silver sulfide.

[0058] Optionally, the preset crystal film 25 may be made of the same material as the sulfide crystal, or may be a material used to assist in the growth of the sulfide crystal, thereby increasing the growth rate of the sulfide crystal between the positive and negative electrodes or reducing the time to reach a preset growth thickness.

[0059] In one possible implementation, the plurality of pins 12 are used to connect to the female socket harness; in another possible implementation, the plurality of pins 12 are used to connect to the circuit board, so that the monitoring membrane structure 2 can control the vulcanization condition in the inner cavity of the controller. Optionally, in order to further improve the reliability of monitoring the vulcanization condition, a monitoring membrane structure 2 can be provided on the end surface of the pin 12 connected to the female socket harness, and a monitoring membrane structure 2 can also be provided on the end surface of the pin 12 connected to the circuit board.

[0060] In a possible implementation, in order to further improve the reliability and sensitivity of monitoring the sulfidation situation. The monitoring membrane structure 2 includes a first monitoring membrane structure and a second monitoring membrane structure; the distance between the positive electrode 221 and the negative electrode 222 in the first monitoring membrane structure is greater than the distance between the positive electrode 221 and the negative electrode 222 in the second monitoring membrane structure. The voltage difference between the positive and negative electrodes in the first monitoring membrane structure is greater than or equal to the voltage difference between the positive and negative electrodes in the first monitoring membrane structure; thus forming a new combination, realizing two-stage early warning for sulfidation monitoring, early warning when light sulfidation occurs, alarm replacement when severe sulfidation occurs, and improving the monitoring granularity and the flexibility of fault handling.

[0061] In another possible embodiment, in order to avoid the situation where the above-mentioned single monitoring membrane structure 2 has low monitoring reliability; the monitoring membrane structure 2 includes a first monitoring membrane structure and a second monitoring membrane structure; the distance between the positive electrode 221 and the negative electrode 222 in the first monitoring membrane structure is equal to the distance between the positive electrode 221 and the negative electrode 222 in the second monitoring membrane structure; the voltage difference between the positive and negative electrodes in the first monitoring membrane structure is greater than or equal to the voltage difference between the positive and negative electrodes in the first monitoring membrane structure.

[0062] The present application discloses, on the other hand, a terminal connector vulcanization monitoring system, which includes a line monitoring device and the above-mentioned terminal connector.

[0063] On the other hand, the present application also discloses a terminal connector sulfide warning method, which is applied to the above-mentioned terminal connector sulfide monitoring system. The method includes: receiving the current value of the monitoring membrane structure 2 sent by the line monitoring device; if the current value is greater than or equal to a preset current value, generating an alarm message.

[0064] In this example, the execution subject of the sulfide early warning method is the central control unit.

[0065] The preset current value is smaller than the current value that will cause the pin 12 of the terminal connector to short-circuit; the preset current value can be determined after an experiment based on the actual situation of the pin 12 of the corresponding terminal connector.

[0066] Optionally, in order to improve monitoring flexibility, when two monitoring membrane structures are provided on the terminal connector, and the preset currents of the two monitoring membrane structures are different, the central control unit can generate corresponding alarm information by receiving the currents of different monitoring membrane structures 2 sent by the line monitoring device, when the corresponding currents meet the preset conditions. Optionally, the preset conditions can be that when the current of the first monitoring membrane structure is greater than or equal to the first preset current, a first alarm information is generated; when the current of the second monitoring membrane is greater than or equal to the second preset current, a second alarm information is generated; the second preset current is greater than the first preset current; the first alarm information is used to remind the operator that the terminal connector has a short circuit risk; the second alarm information is used to inform the operator that the terminal connector needs to be replaced.

[0067] Through the above-mentioned early warning method, by applying voltage to the positive and negative electrodes of the above-mentioned monitoring membrane structure 2, early warning can be achieved before the pins 12 of the terminal connector are sulfided and produce crystal dendrites. At the same time, by pre-adjusting the pressure difference and spacing of the above-mentioned positive and negative electrode layers 22, multi-level detection can be achieved, making the alarm and fault handling strategies more flexible and controllable. At the same time, by pre-laying a preset crystal thin layer and assisting the growth of materials, the growth of crystal dendrites, that is, the impedance change, is more linear, which is helpful for graded early warning and improving monitoring sensitivity.

[0068] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A terminal connector, characterized in that: include: A male socket housing (1), the male socket housing (1) comprising a first surface (11); a plurality of pins (12) are provided on the first surface (11); A monitoring membrane structure (2), wherein a first preset distance exists between the monitoring membrane structure (2) and the pin (12); the monitoring membrane structure (2) comprises a stacked base layer (21) and positive and negative electrode layers (22); the positive and negative electrode layers (22) comprise a positive electrode (221) and a negative electrode (222); the distance between the positive electrode (221) and the negative electrode (222) is less than or equal to the distance between any adjacent pins (12) having a voltage difference among the plurality of pins (12); the positive electrode (221) and the negative electrode (222) are connected to a line monitoring device, and the line monitoring device is used to monitor the impedance or current between the positive electrode (221) and the negative electrode (222).

2. The terminal connector according to claim 1, characterized in that: The positive electrode (221) includes a plurality of sub-positive electrodes (2211); The negative electrode (222) includes a plurality of sub-negative electrodes (2221); The plurality of sub-positive electrodes (2211) and the plurality of sub-negative electrodes (2221) are arranged alternately.

3. The terminal connector according to claim 2, characterized in that: The positive and negative electrode layers (22) include a first electrode set (223) and a second electrode set (224); The sub-positive electrodes (2211) and the sub-negative electrodes (2221) in the first electrode set (223) are arranged alternately along a first direction; The arrangement of the sub-positive electrodes (2211) and the sub-negative electrodes (2221) in the second electrode set (224) is opposite to that of the first electrode set (223).

4. The terminal connector according to claim 2, characterized in that: The plurality of sub-positive electrodes (2211) are arranged at intervals along the second direction; The plurality of negative sub-electrodes (2221) are arranged at intervals along the second direction; There is a second preset distance between adjacent sub-positive electrodes (2211) and adjacent sub-negative electrodes (2221); the second preset distance is less than or equal to the distance between any adjacent pins (12) having a voltage difference among the plurality of pins (12).

5. The terminal connector according to claim 2, characterized in that: The monitoring membrane structure (2) further comprises a positive connection electrode (23) and a negative connection electrode (24); The positive connection electrode (23) is connected to the plurality of sub-positive electrodes (2211) and the negative electrode of the line monitoring device; The negative connection electrode (24) is connected to the plurality of sub-negative electrodes (2221) and the positive electrode of the line monitoring device.

6. The terminal connector according to claim 1, characterized in that: A preset crystal film (25) is also provided on the base layer (21); One end of the preset crystal film (25) is connected to the positive electrode (221), and the other end of the preset crystal film (25) is connected to the negative electrode (222); The current of the conductive loop formed by the positive electrode (221), the preset crystal film (25) and the negative electrode (222) is less than a preset current; The material of the predetermined crystal film (25) includes sulfide crystals.

7. The terminal connector according to claim 1, characterized in that: The monitoring membrane structure (2) is located on the first surface (11).

8. The terminal connector according to claim 1, characterized in that: The monitoring membrane structure (2) comprises a first monitoring membrane structure and a second monitoring membrane structure; The distance between the positive electrode (221) and the negative electrode (222) in the first monitoring membrane structure is greater than or equal to the distance between the positive electrode (221) and the negative electrode (222) in the second monitoring membrane structure.

9. A terminal connector vulcanization monitoring system, characterized in that: The invention comprises a line monitoring device and a terminal connector as claimed in any one of claims 1 to 8.

10. A vulcanization early warning method for a terminal connector, characterized in that: Applied to the terminal connector vulcanization monitoring system according to claim 9, the method comprises: receiving a current value of the monitoring membrane structure (2) sent by the line monitoring device; If the current value is greater than or equal to the preset current value, an alarm message is generated.

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