Connector assembly

Abstract

The application discloses a connector assembly, and belongs to the technical field of power battery pack testing. The connector assembly comprises a first connector and a second connector. The first connector is adapted to be mounted on a power battery pack, and the first connector comprises a first positive terminal, a first negative terminal and a first interlocking assembly. The second connector comprises a second positive terminal, a second negative terminal, a second interlocking assembly, a first wire, a second wire and a third wire, the second positive terminal is connected with the first wire, the second negative terminal is connected with the second wire, and the second interlocking assembly is connected with the third wire. When the first connector is connected with the second connector, the first positive terminal is connected with the second positive terminal, the first negative terminal is connected with the second negative terminal, and the first interlocking assembly is connected with the second interlocking assembly and a component to be tested respectively. The technical scheme of the application can improve the detection efficiency and accuracy of various performances of the power battery pack.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power battery pack testing, and particularly relates to a connector assembly. BACKGROUND

[0002] In order to ensure that the power battery pack can be safely used on a vehicle, the power battery pack is usually subjected to environmental test. The environmental test refers to placing the power battery pack in different environmental conditions, such as different temperatures, humidities or pressures, to detect the corrosion resistance and sealing performance of the power battery pack. However, the environmental test not only affects the corrosion resistance and sealing performance of the power battery pack, but also affects the insulation performance of the power battery pack.

[0003] In the related art, the insulation performance is detected separately after the environmental test, that is, the power battery pack is removed from the environmental test condition. However, this detection process not only reduces the detection efficiency of multiple performances of the power battery pack, but also reduces the accuracy of the insulation performance detection of the battery pack. SUMMARY

[0004] Therefore, the present application provides a connector assembly, which can improve the detection efficiency and accuracy of multiple performances of the power battery pack.

[0005] In one aspect, the present application provides a connector assembly, which comprises a first connector and a second connector.

[0006] The first connector is adapted to be mounted on the power battery pack, and the first connector comprises a first positive terminal, a first negative terminal and a first interlocking assembly.

[0007] The second connector comprises a second positive terminal, a second negative terminal, a second interlocking assembly, a first wire, a second wire and a third wire, the second positive terminal is connected with the first wire, the second negative terminal is connected with the second wire, and the second interlocking assembly is connected with the third wire.

[0008] When the first connector is connected with the second connector, the first positive terminal is connected with the second positive terminal, the first negative terminal is connected with the second negative terminal, and the first interlocking assembly is connected with the second interlocking assembly and can be connected with a component to be tested.

[0009] Optionally, the first interlocking assembly comprises a first interlocking terminal and a second interlocking terminal.

[0010] The second interlocking assembly comprises a third interlocking terminal and a fourth interlocking terminal.

[0011] The first connector and the second connector are plugged together, the first interlocking terminal and the third interlocking terminal are connected, and the second interlocking terminal and the fourth interlocking terminal are connected.

[0012] Optionally, the third interlocking terminal, the fourth interlocking terminal and the third wire are connected with each other.

[0013] The first interlocking terminal and the second interlocking terminal are connected to the same to-be-tested component.

[0014] Optionally, the third interlocking terminal, the fourth interlocking terminal and the third wire are connected with each other.

[0015] The first connector further comprises a first insulating member and a second insulating member, a part of the first interlocking terminal inside the power battery pack is wrapped by the first insulating member, and a part of the second interlocking terminal inside the power battery pack is wrapped by the second insulating member.

[0016] Optionally, the first interlocking terminal and the second interlocking terminal are connected to different to-be-tested components respectively.

[0017] The second connector further comprises a fourth wire, the third interlocking terminal is connected with the third wire, and the fourth interlocking terminal is connected with the fourth wire.

[0018] Optionally, the first connector further comprises a third insulating member, a part of the first interlocking terminal inside the power battery pack is wrapped by the third insulating member, and the second interlocking terminal is connected with the to-be-tested component.

[0019] The second connector further comprises a fifth wire, the third interlocking terminal is connected with the third wire, and the fourth interlocking terminal is connected with the fifth wire.

[0020] Optionally, the first connector comprises a first housing, the first housing has a first accommodating cavity, and the first accommodating cavity is used for accommodating the first positive electrode terminal, the first negative electrode terminal and the first interlocking assembly.

[0021] The second connector comprises a second housing, the second housing has a second accommodating cavity, the second accommodating cavity is used for accommodating the second positive electrode terminal, the second negative electrode terminal and the second interlocking assembly, and an end surface of the second housing facing the first connector is provided with an annular groove.

[0022] When the first connector and the second connector are plugged together, the first housing is inserted into the annular groove, and the first accommodating cavity and the second accommodating cavity form a sealed cavity.

[0023] Optionally, the second connector further comprises a first sealing member, two sides of the first sealing member abutting against an end face of the first housing facing the second connector and a groove bottom of the annular groove respectively.

[0024] Optionally, the second housing has a third accommodating cavity, the third accommodating cavity being in communication with the second accommodating cavity, the third accommodating cavity having a first mounting hole, a second mounting hole and a third mounting hole;

[0025] The first wire penetrates into the third accommodating cavity through the first mounting hole and is connected with the second positive electrode terminal, and an outer wall of the first wire is in interference fit with an inner wall of the first mounting hole;

[0026] The second wire penetrates into the third accommodating cavity through the second mounting hole and is connected with the second negative electrode terminal, and an outer wall of the second wire is in interference fit with an inner wall of the second mounting hole;

[0027] The third wire penetrates into the third accommodating cavity through the third mounting hole and is connected with the second interlocking assembly, and an outer wall of the third wire is in interference fit with an inner wall of the second mounting hole.

[0028] Optionally, the second connector further comprises a second sealing member, the second sealing member being sleeved on the third wire, and a side of the second sealing member facing the second housing abutting against an outer wall of the second housing around the third mounting hole.

[0029] The connector assembly provided by the embodiment of the present application comprises a first connector and a second connector, and the first connector is mounted on a power battery pack. When the first connector is plugged with the second connector, a first positive electrode terminal of the first connector can be connected with a second positive electrode terminal of the second connector and a first wire in sequence. A first negative electrode terminal of the first connector can be connected with a second negative electrode terminal of the second connector in sequence. A to-be-tested component is connected with a first interlocking assembly of the first connector and a second interlocking assembly of the second connector in sequence. By using the connector assembly provided by the embodiment of the present application, during the environmental test of the power battery pack, the second connector is first plugged with the first connector, and then the insulation resistance value between a third wire and the first wire and the second wire is detected, and then the insulation failure point in the power battery pack is determined according to the insulation resistance value and the position of the to-be-tested component. That is, the insulation performance of the power battery pack can be detected during the environmental test of the power battery pack, and it is not necessary to separately detect the insulation performance of the power battery pack after the environmental test is completed, so that the detection efficiency of multiple performances of the power battery pack can be improved. Meanwhile, since the insulation performance of the power battery pack can be measured in time during the test, the influence degree of different test conditions on the insulation performance can be more accurately determined, and the accuracy of the insulation performance detection of the power battery pack is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0031] Figure 1 is a structural schematic diagram of a connector assembly and a partial enlarged view provided by an embodiment of the present application;

[0032] Figure 2 is a structural schematic diagram of a connector assembly and a partial enlarged view of a first connector provided by an embodiment of the present application;

[0033] Figure 3 is a top view of a connector assembly provided by an embodiment of the present application;

[0034] Figure 4 is a structural schematic diagram of a second connector in a connector assembly provided by an embodiment of the present application;

[0035] Figure 5 is a structural schematic diagram of a second connector in another connector assembly provided by an embodiment of the present application;

[0036] Figure 6 is a structural schematic diagram of a second connector in a connector assembly provided by an embodiment of the present application;

[0037] Figure 7 is a sectional view of a second connector in a connector assembly provided by an embodiment of the present application;

[0038] Figure 8 is a structural schematic diagram of part of components in a connector assembly provided by an embodiment of the present application;

[0039] Figure 9 is a structural schematic diagram of part of components in a connector assembly provided by an embodiment of the present application;

[0040] Figure 10 is a structural schematic diagram of part of components in a connector assembly provided by an embodiment of the present application.

[0041] Reference signs:

[0042] 100, First connector; 110, First positive terminal; 120, First negative terminal; 130, First interlock assembly; 140, First insulator; 150, Second insulator; 160, Third insulator; 180, First housing; 131, First interlock terminal; 132, Second interlock terminal; 181, First receiving cavity; 183, Body; 184, Base;

[0043] 200, Second connector; 210, Second positive terminal; 220, Second negative terminal; 230, Second interlock assembly; 240, First wire; 250, Second wire; 260, Third wire; 270, Fourth wire; 280, Second housing; 290, Fifth wire; 231, Third interlock terminal; 232, Fourth interlock terminal; 281, Second receiving cavity; 282, First seal; 283, Third receiving cavity; 287, Second seal; 288, Annular groove; 289, Insulating layer;

[0044] 300. Component to be tested;

[0045] 400. Connectors;

[0046] 500, power battery pack.

[0047] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] In the embodiments of this application, directional terms such as "upper," "lower," and "side" are generally used in the following ways: Figure 1 The relative positions shown are based on established rules, and these directional terms are used merely to more clearly describe the structures and their relationships, not to describe absolute positions. Positions may change when the product is placed in different orientations; for example, "up" and "down" may be interchanged. Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by those skilled in the art.

[0050] In order to make the technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0051] In combination Figure 1 , Figure 2 , Figure 3 and Figure 4 , the present application provides a connector assembly. The connector assembly comprises a first connector 100 and a second connector 200.

[0052] The first connector 100 is adapted to be mounted on a power battery pack 500, and the first connector 100 comprises a first positive terminal 110, a first negative terminal 120 and a first interlock assembly 130. The first positive terminal 110 and the first negative terminal 120 are generally connected to the positive electrode of the power battery and the negative electrode of the power battery in the power battery pack 500, respectively.

[0053] The second connector 200 comprises a second positive terminal 210, a second negative terminal 220, a second interlock assembly 230, a first wire 240, a second wire 250 and a third wire 260. The second positive terminal 210 is connected to the first wire 240, the second negative terminal 220 is connected to the second wire 250, and the second interlock assembly 230 is connected to the third wire 260. It should be noted that the connection between the second positive terminal 210 and the first wire 240 means that the second positive terminal 210 is electrically connected to the first wire 240, the connection between the second negative terminal 220 and the second wire 250 means that the second negative terminal 220 is electrically connected to the second wire 250, and the connection between the second interlock assembly 230 and the third wire 260 means that the second interlock assembly 230 is electrically connected to the third wire 260.

[0054] When the first connector 100 is plugged into the second connector 200, the first positive terminal 110 is connected to the second positive terminal 210, the first negative terminal 120 is connected to the second negative terminal 220, and the first interlock assembly 130 is connected to the second interlock assembly 230 and can be connected to a to-be-tested component 300. It should be noted that the connection between the first interlock assembly 130 and the second interlock assembly 230 and the to-be-tested component 300 means that the first interlock assembly 130 is electrically connected to the second interlock assembly 230 and the to-be-tested component 300, respectively. The to-be-tested component 300 can be the shell of the power battery pack 500 or any device in the power battery pack 500.

[0055] With the connector assembly provided in the embodiments of the present application, during the environmental test of the power battery pack 500, the second connector 200 is first plugged on the first connector 100. Then, the insulation resistance between the third conductor 260 and the first conductor 240 and the insulation resistance between the third conductor 260 and the second conductor 250 are detected by using an insulation resistance testing instrument, and then the insulation failure point in the power battery pack 500 is determined according to the two insulation resistances and the position of the component to be tested 300. It should be understood that the insulation resistance generally refers to the resistance value of the current flowing through the component to be tested 300 after a test voltage is applied to the component to be tested 300. Generally, whether the insulation performance is abnormal can be determined according to the two detected insulation resistances and the preset resistance value range. For example, if both of the two detected insulation resistances are not within the preset resistance value range, it indicates that the insulation performance of the loop of the component to be tested 300 is abnormal, and the insulation failure point of the component to be tested 300 and the devices on the loop thereof can be checked. If the insulation resistance between the third conductor 260 and the first conductor 240 is not within the preset resistance value range, it indicates that there is an abnormal insulation performance on the line from the positive electrode of the power battery in the power battery pack 500 to the first conductor 240, and the insulation failure point of the component to be tested 300 and the devices on the line from the positive electrode of the power battery to the first conductor 240 can be checked at this time. In this way, the insulation performance of the power battery pack 500 can be detected during the environmental test of the power battery pack 500, without the need for separate detection of the insulation performance of the power battery pack 500 after the environmental test is completed, thereby improving the detection efficiency of multiple performances of the power battery pack 500. At the same time, since the insulation performance of the power battery pack 500 can be measured in time during the test, and the range where the insulation failure may occur can be accurately positioned according to the insulation resistance, the influence of different test conditions on the insulation performance of the power battery pack 500 can be more accurately determined, and the accuracy of the insulation performance detection of the power battery pack 500 and the checking efficiency of the insulation failure point are improved.

[0056] In some embodiments, the first connector 100 is a high-voltage connector installed on the power battery pack 500. For example, the first connector 100 can be a high-voltage connector installed on the power battery pack 500 for charging or discharging, and the second connector 200 is a connector for detecting insulation performance that is connected to the high-voltage connector. That is, when the power battery pack 500 is subjected to environmental test, the original high-voltage connector on the power battery pack 500 can be used to detect the insulation performance of the power battery pack 500, without the need to add additional devices to the power battery pack 500. In this way, not only can the detection cost of the insulation performance be reduced, but also the change of the insulation performance of the power battery pack 500 under different environmental test conditions on the whole vehicle can be more realistically simulated.

[0057] The above description is made in conjunction with the drawingsFigures 1 to 10 The details and effects of the connector assembly provided by the embodiments of the present application are described in more detail.

[0058] In combination Figure 2 and Figure 4 As shown in FIG. 1, in some embodiments, the first interlock assembly 130 includes a first interlock terminal 131 and a second interlock terminal 132. It should be noted that the first interlock terminal 131 and the second interlock terminal 132 are terminals in the HVIL (High Voltage Inter-lock) loop in the power battery pack 500. One of the first interlock terminal 131 and the second interlock terminal 132 is an interlock input terminal, and the other is an interlock output terminal. The first interlock terminal 131 and the second interlock terminal 132 can be electrically connected between the connector 400 and the component to be tested 300.

[0059] The second interlock assembly 230 includes a third interlock terminal 231 and a fourth interlock terminal 232. When the first connector 100 and the second connector 200 are plugged in, the first interlock terminal 131 is connected to the third interlock terminal 231, and the second interlock terminal 132 is connected to the fourth interlock terminal 232. It should be understood that the connection between the two terminals means that the two terminals are electrically connected. It should be noted that when the first connector 100 and the second connector 200 are plugged in, the first positive terminal 110 and the first negative terminal 120 are first connected to the second positive terminal 210 and the second negative terminal 220, respectively, and then the first interlock terminal 131 and the second interlock terminal 132 are connected to the third interlock terminal 231 and the fourth interlock terminal 232, respectively. When the second connector 200 is unplugged, the first interlock terminal 131 and the second interlock terminal 132 are first disconnected from the third interlock terminal 231 and the fourth interlock terminal 232, respectively, and then the first positive terminal 110 and the first negative terminal 120 are first disconnected from the second positive terminal 210 and the second negative terminal 220, respectively. That is, the interlock signals of the first interlock assembly 130 and the second interlock assembly 230 can further ensure the effectiveness of the plugging of the first connector 100 and the second connector 200.

[0060] In some embodiments, the third interlocking terminal 231, the fourth interlocking terminal 232 and the third wire 260 are connected to each other. The first interlocking terminal 131 and the second interlocking terminal 132 are connected to the same component under test 300. It should be noted that after being connected in the above manner, during the environmental test of the power battery pack 500, the insulation resistance between the third wire 260 and the first wire 240 and the second wire 250 can be detected. When the insulation resistance is less than a preset resistance value, it can be determined that the component under test 300 or the loop in which the component under test 300 is located has an insulation failure point, and the specific insulation failure component can be further investigated. In this way, during the environmental test of the power battery pack 500, not only the insulation performance and other performances of the internal devices of the power battery pack 500 can be synchronously detected to improve the detection efficiency of multiple performances of the power battery pack 500, but also the insulation failure range can be more accurately located.

[0061] In combination with FIGS. 1, 2 and 3, Figure 2 、 Figure 4 and Figure 8 In some embodiments, the third interlocking terminal 231, the fourth interlocking terminal 232 and the third wire 260 are connected to each other. The first connector 100 further comprises a first insulation member 140 and a second insulation member 150. The part of the first interlocking terminal 131 inside the power battery pack 500 is wrapped by the first insulation member 140. The part of the second interlocking terminal 132 inside the power battery pack 500 is wrapped by the second insulation member 150. It should be noted that after being connected in the above manner, during the environmental test of the power battery pack 500, the insulation resistance between the third wire 260 and the first wire 240 and the second wire 250 can be detected. When the insulation resistance is less than a preset resistance value, it can be determined that the insulation performance of the first connector 100 itself is abnormal. Thus, the influence of the test conditions of different environmental tests on the insulation performance of the high-voltage connector installed on the power battery pack 500 can be more accurately determined. In this way, during the environmental test of the power battery pack 500, the efficiency of detecting the insulation performance of the high-voltage connector on the power battery can be improved.

[0062] In combination with FIGS. 1, 2 and 3, Figure 2 、 Figure 5 and Figure 9As shown, in some embodiments, the first interlocking terminal 131 and the second interlocking terminal 132 are respectively connected with different to-be-tested components 300. The second connector 200 further comprises a fourth wire 270, the third interlocking terminal 231 is connected with the third wire 260, and the fourth interlocking terminal 232 is connected with the fourth wire 270. It should be noted that after being connected in the above manner, during the environmental test of the power battery pack 500, the insulation resistance between the third wire 260 and the first wire 240 and the second wire 250 respectively, and the insulation resistance between the fourth wire 270 and the first wire 240 and the second wire 250 respectively can be detected, that is, a total of four insulation resistances can be measured. When the insulation resistance is less than a preset resistance value, it can be determined that the to-be-tested component 300 corresponding to the abnormal insulation resistance and the insulation failure point possibly existing on the line of the to-be-tested component 300 exist, and then the specific insulation failure component can be further investigated. In this way, during the environmental test of the power battery pack 500, the insulation performance of multiple to-be-tested components 300 and the lines corresponding thereto in the power battery pack 500 can be detected at the same time, and the detection efficiency of the insulation performance of the power battery pack 500 is improved.

[0063] In combination Figure 2 , Figure 4 and Figure 10As shown, in some embodiments, the first connector 100 further comprises a third insulation piece 160, the part of the first interlock terminal 131 located inside the power battery pack 500 is wrapped by the third insulation piece 160, and the second interlock terminal 132 is connected to the component under test 300. The second connector 200 further comprises a fifth wire 290, the third interlock terminal 231 is connected to the third wire 260, and the fourth interlock terminal 232 is connected to the fifth wire 290. It should be noted that after being connected in the above manner, during the environmental test of the power battery pack 500, the insulation resistance between the third wire 260 and the first wire 240 and the second wire 250 respectively, and the insulation resistance between the fourth wire 270 and the first wire 240 and the second wire 250 respectively can be detected, that is, a total of four insulation resistances can be measured. If any of the insulation resistances between the third wire 260 and the first wire 240 and the second wire 250 is less than a preset resistance value, it is determined that the insulation performance of the first connector 100 itself is abnormal. If any of the insulation resistances between the fifth wire 290 and the first wire 240 and the second wire 250 is less than a preset resistance value, it is determined that the component under test 300 or the loop in which the component under test 300 is located has an insulation failure point, and thus the specific insulation failure component can be checked within the range of the possible insulation failure point. In this way, during the environmental test of the power battery pack 500, the insulation performance of the first connector 100 itself and the component under test 300 and the loop in which the component under test 300 is located on the power battery pack 500 can be detected at the same time, which not only improves the detection efficiency of various performances of the power battery, but also more accurately locates the insulation failure range, and improves the checking efficiency of the insulation performance abnormal component.

[0064] In combination Figure 2 and Figure 4As shown in the drawings, in some embodiments, the first connector 100 comprises a first housing 180 having a first accommodating cavity 181 for accommodating the first positive electrode terminal 110, the first negative electrode terminal 120 and the first interlocking assembly 130. The second connector 200 comprises a second housing 280 having a second accommodating cavity 281 for accommodating the second positive electrode terminal 210, the second negative electrode terminal 220 and the second interlocking assembly 230, and an end surface of the second housing 280 facing the first connector 100 is provided with an annular groove 288. When the first connector 100 is plugged with the second connector 200, the first housing 180 is inserted into the annular groove 288, and the first accommodating cavity 181 and the second accommodating cavity 281 form a sealed cavity. It should be noted that during the environmental test, the power battery pack 500 may be placed in a water environment, for example, when the power battery pack 500 is subjected to waterproof sealing test, the power battery pack 500 needs to be immersed in water. Since the first interlocking assembly 130, the first positive electrode terminal 110 and the first negative electrode terminal 120 can be sealed in the sealed cavity, when the first connector 100 is plugged with the second connector, the terminals for insulation detection can be effectively prevented from being invaded by water flow and the like, that is, the terminals are prevented from being directly contacted with water, and the accuracy of insulation performance detection is improved.

[0065] As shown in the drawings, Figure 5 In some embodiments, the second connector 200 further comprises a first sealing member 282, and two sides of the first sealing member 282 are respectively abutted against an end surface of the first housing 180 facing the second connector 200 and a groove bottom of the annular groove 288. In this way, the sealing performance of the sealed cavity formed after the first connector 100 is plugged with the second connector 200 can be further improved.

[0066] As shown in the drawings, Figure 7 In some embodiments, the second housing 280 has a third accommodating cavity 283 in communication with the second accommodating cavity 281, and the third accommodating cavity 283 has a first mounting hole, a second mounting hole and a third mounting hole. The first lead wire 240 passes through the first mounting hole into the third accommodating cavity 283 and is connected with the second positive electrode terminal 210, and an outer wall of the first lead wire 240 is in interference fit with an inner wall of the first mounting hole. The second lead wire 250 passes through the second mounting hole into the third accommodating cavity 283 and is connected with the second negative electrode terminal 220, and an outer wall of the second lead wire 250 is in interference fit with an inner wall of the second mounting hole. The third lead wire 260 passes through the third mounting hole into the third accommodating cavity 283 and is connected with the second interlocking assembly 230, and an outer wall of the third lead wire 260 is in interference fit with an inner wall of the second mounting hole. Thus, it can be ensured that the external water flow or impurities flow into the gap between the lead wire and the corresponding mounting hole, and thus the sealing performance after the first connector 100 is connected with the second connector 200 is good, and the accuracy of insulation performance detection is improved.

[0067] In some embodiments, the third accommodating cavity 283 has a fourth mounting hole (not shown in the figure). The fourth wire 270 or the fifth wire 290 penetrates into the third accommodating cavity 283 through the fourth mounting hole and is connected with the fourth interlocking terminal 232. The outer wall of the fourth wire 270 or the outer wall of the fifth wire 290 is in interference fit with the inner wall of the fourth mounting hole. Thus, it can be ensured that the external water flow or impurities flow into the gap between the fourth wire 270 or the fifth wire 290 and the fourth mounting hole, thereby ensuring good sealing performance after the first connector 100 is connected with the second connector 200, and improving the accuracy of the insulation performance detection. It should be understood that each wire in the embodiments of the present application includes a conductive part and an insulating part. The conductive part is a metal wire with wire conductivity, and the end of the conductive part is exposed to realize electrical connection. The insulating part is a component with insulation function wrapped outside the metal wire, which may, for example, be an insulating skin.

[0068] As shown in Figure 7 some embodiments, the fourth mounting hole and the third mounting hole can be the same mounting hole. The second connector 200 further includes an insulating layer 289, which wraps the third wire 260 and the fourth wire 270 at the same time, or wraps the third wire 260 and the fifth wire 290 at the same time. The outer wall of the insulating layer 289 is in interference fit with the inner wall of the third mounting hole. In this way, the number of mounting holes of the second shell 280 can be reduced, the risk of external water flow or impurities entering the second connector 200 through the gap between the wire and the mounting hole is reduced, and the sealing performance of the second connector 200 after being plugged with the first connector 100 is improved.

[0069] As shown in Figure 6 some embodiments, the second connector 200 further includes a second sealing member 287, which is sleeved on the third wire 260, and the side of the second sealing member 287 facing the second shell 280 abuts against the outer wall of the second shell 280 around the third mounting hole. In this way, the sealing performance of the sealing cavity formed after the first connector 100 is plugged with the second connector 200 can be further improved.

[0070] As shown in Figure 2 some embodiments, the first shell 180 includes a body 183 and a seat body 184, and the two sides of the seat body 184 are connected with the body 183 and the outer wall of the power battery pack 500, respectively. It should be noted that the seat body 184 and the body 183 can be integrally formed. The outer shell of the power battery pack 500 and the seat body 184 can be fixed by bolts or other fixing members. Thus, the second connector 200 can be stably connected with the outer shell of the power battery pack 500.

[0071] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the application cover any and all variations of the application that come within the scope of the

[0072] It is understood that the application is not limited to the precise construction herein disclosed and shown in the drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the claims that follow.

Claims

1. A connector assembly characterized by, The connector assembly comprises a first connector (100) and a second connector (200); The first connector (100) is adapted to be mounted on a power battery pack (500), and the first connector (100) comprises a first positive terminal (110), a first negative terminal (120) and a first interlocking assembly (130); The second connector (200) comprises a second positive terminal (210), a second negative terminal (220), a second interlocking assembly (230), a first wire (240), a second wire (250) and a third wire (260), the second positive terminal (210) is connected with the first wire (240), the second negative terminal (220) is connected with the second wire (250), and the second interlocking assembly (230) is connected with the third wire (260); When the first connector (100) is inserted into the second connector (200), the first positive terminal (110) is connected with the second positive terminal (210), the first negative terminal (120) is connected with the second negative terminal (220), and the first interlocking assembly (130) is connected with the second interlocking assembly (230) and can be connected with a to-be-tested component (300).

2. The connector assembly of claim 1, wherein, The first interlocking assembly (130) comprises a first interlocking terminal (131) and a second interlocking terminal (132); The second interlocking assembly (230) comprises a third interlocking terminal (231) and a fourth interlocking terminal (232); When the first connector (100) is inserted into the second connector (200), the first interlocking terminal (131) is connected with the third interlocking terminal (231), and the second interlocking terminal (132) is connected with the fourth interlocking terminal (232).

3. The connector assembly of claim 2, wherein, The third interlocking terminal (231), the fourth interlocking terminal (232) and the third wire (260) are connected with each other; The first interlocking terminal (131) and the second interlocking terminal (132) are connected with different to-be-tested components (300).

4. The connector assembly of claim 2, wherein, The third interlocking terminal (231), the fourth interlocking terminal (232) and the third wire (260) are connected with each other; The first connector (100) further comprises a first insulating member (140) and a second insulating member (150), and a part of the first interlocking terminal (131) inside the power battery pack (500) is wrapped by the first insulating member (140); A part of the second interlocking terminal (132) inside the power battery pack (500) is wrapped by the second insulating member (150).

5. The connector assembly of claim 2, wherein, The first interlocking terminal (131) and the second interlocking terminal (132) are respectively connected with different to-be-tested components (300); The second connector (200) further comprises a fourth wire (270), the third interlocking terminal (231) is connected with the third wire (260), and the fourth interlocking terminal (232) is connected with the fourth wire (270).

6. The connector assembly of claim 2, wherein, The first connector (100) further comprises a third insulation piece (160), a part of the first interlocking terminal (131) inside the power battery pack (500) is wrapped by the third insulation piece (160), and the second interlocking terminal (132) is connected with the component to be tested (300); The second connector (200) further comprises a fifth wire (290), the third interlocking terminal (231) is connected with the third wire (260), and the fourth interlocking terminal (232) is connected with the fifth wire (290).

7. The connector assembly of claim 1, wherein, The first connector (100) comprises a first shell (180), the first shell (180) has a first accommodating cavity (181), and the first accommodating cavity (181) is used for accommodating the first positive electrode terminal (110), the first negative electrode terminal (120) and the first interlocking assembly (130); The second connector (200) comprises a second shell (280), the second shell (280) has a second accommodating cavity (281), and the second accommodating cavity (281) is used for accommodating the second positive electrode terminal (210), the second negative electrode terminal (220) and the second interlocking assembly (230), and an end surface of the second shell (280) facing the first connector (100) is provided with an annular groove (288); When the first connector (100) and the second connector (200) are plugged, the first shell (180) is inserted into the annular groove (288), and the first accommodating cavity (181) and the second accommodating cavity (281) form a sealed cavity.

8. The connector assembly of claim 7, wherein, The second connector (200) further comprises a first sealing piece (282), and two sides of the first sealing piece (282) are respectively abutted with an end surface of the first shell (180) facing the second connector (200) and a groove bottom of the annular groove (288).

9. The connector assembly of claim 7, wherein, The second shell (280) has a third accommodating cavity (283) in communication with the second accommodating cavity (281), and the third accommodating cavity (283) has a first mounting hole, a second mounting hole and a third mounting hole; The first wire (240) penetrates into the third accommodating cavity (283) through the first mounting hole and is connected with the second positive electrode terminal (210), and an outer wall of the first wire (240) is in interference fit with an inner wall of the first mounting hole; The second wire (250) penetrates into the third accommodating cavity (283) through the second mounting hole and is connected with the second negative electrode terminal (220), and an outer wall of the second wire (250) is in interference fit with an inner wall of the second mounting hole; The third wire (260) penetrates into the third accommodating cavity (283) through the third mounting hole and is connected with the second interlocking assembly (230), and an outer wall of the third wire (260) is in interference fit with an inner wall of the second mounting hole.

10. The connector assembly of claim 9, wherein, The second connector (200) further comprises a second sealing member (287) sleeved on the third lead wire (260), and a side of the second sealing member (287) facing the second shell (280) abuts against an outer wall of the second shell (280) around the third mounting hole.

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