An electrical connector device

Abstract

An electrical connector device belongs to the technical field of battery energy source. It comprises a shell and a shell cover, and further comprises a pair of power terminals, a signal terminal and an explosion-proof valve. The pair of power terminals are symmetrically arranged at the middle positions of the shell cavity. The explosion-proof valve and the signal terminal correspond to the middle positions of the pair of power terminals and are separately arranged at the upper and lower parts of the pair of power terminals. The shell is formed with a gas permeable hole at the middle of the bottom side wall. The power terminals, the signal terminal and the explosion-proof valve are arranged through the shell cavity. An insulating plate covering the explosion-proof valve is arranged at the upper position in the shell cavity. The shell is provided with a signal wire clamping groove on the top side wall corresponding to the signal terminal, and power wire positioning grooves are formed at the left and right sides of the signal wire clamping groove. The signal wire is connected with the signal terminal and is led out of the shell through the signal wire clamping groove. Advantage: The modular structure design solves the problems of layout confusion, complex installation and safety hazards in the prior art.

Description

Technical Field

[0001] This utility model belongs to the field of battery energy technology and relates to an electrical connector device, specifically a high-reliability integrated electrical connector device applied to new energy battery pack modules, suitable for high-voltage and high-current scenarios such as electric vehicles and energy storage systems. Background Technology

[0002] Within a new energy battery pack, the electrical connector device is an integrated, modular electrical interface unit used to replace traditional discrete wiring harnesses and multiple independent connectors. It can highly integrate multiple functions into a compact device and is a key component for optimizing the internal electrical architecture of the battery pack.

[0003] The current electrical connector solutions have the following drawbacks: First, they are modular and discrete. Traditional solutions use independent single-wire connectors and external data interfaces, requiring a large number of positioning and mounting holes, which increases the number of mounting holes and amplifies cumulative deviations. In addition, explosion-proof valves are separately mounted externally, occupying space and having inconsistent fixed positions, which can easily lead to safety risks. Second, the wiring is complex. The crossover rate of power lines and signal lines exceeds 40%, and the cable length needs to be manually calibrated. In addition, there is no locking structure at the end of the terminal, resulting in a high failure rate of wire breakage in vibration scenarios. Third, the safety protection is insufficient. The creepage distance is designed only according to the minimum standard, which increases the risk of insulation failure in humid and hot environments. In addition, the protection level is generally IP54, and the chemical gas corrosion of the battery leads to corrosion of the interface and shortens its lifespan.

[0004] In view of the above-mentioned existing technology, it is necessary to improve the structure of the electrical connectors used in new energy battery pack modules. To this end, the applicant has made a useful design, and the technical solution to be introduced below is generated in this context. Utility Model Content

[0005] The purpose of this utility model is to provide an electrical connector device that solves the problems of chaotic layout, complex installation, and safety hazards in the prior art through modular structural design.

[0006] The purpose of this utility model is achieved as follows: an electrical connector device includes a housing and a cover that matches the housing. The housing has a housing cavity on the side facing the cover. It also includes a pair of power terminals, a signal terminal, and an explosion-proof valve. The pair of power terminals are symmetrically arranged in the middle of the housing cavity. The explosion-proof valve and the signal terminal are located above and below the pair of power terminals, respectively. A vent hole is formed in the middle of the bottom side wall of the housing. The power terminals, signal terminals, and explosion-proof valve pass through the housing cavity and extend to the rear of the housing. An insulating plate covering the explosion-proof valve is also provided in the upper part of the housing cavity. A signal wire slot is provided on the top side wall of the housing corresponding to the signal terminal. Power wire positioning slots are formed on the left and right sides of the signal wire slot. The signal wire connects to the signal terminal and is led out of the housing through the signal wire slot. A power wire one is connected to the end of the power terminal facing the cover. The power wire one is locked in the power wire positioning slot. A power wire two is led out from the end of the power terminal facing away from the cover.

[0007] In a specific embodiment of this utility model, the pair of power terminals have internal threaded holes. The power terminals are connected and fastened to power line one and power line two by wiring screws. Power line two is used to connect to power equipment, while power line one is used to connect to electrical equipment. The pair of power lines one are equipped with cable sheaths of different colors, and the cable sheaths are fixed in the power line positioning groove.

[0008] In another specific embodiment of this utility model, the spacing between the pair of power terminals is ≥10mm.

[0009] In another specific embodiment of this utility model, the pair of power terminals are aluminum alloy terminals.

[0010] In another specific embodiment of this utility model, the shell and the cover are PA+% glass fiber injection molded parts.

[0011] In another specific embodiment of this utility model, the cross-section of the housing is square, and the housing has four screw holes at the four corners facing the cover. The cover has cover screws at the four corners for connecting with the screw holes to fix the housing and the cover. The housing has two screw holes on the side facing away from the cover, and the power supply device is connected through the screw holes.

[0012] In a further specific embodiment of this utility model, the screw hole II is configured as a standardized mounting hole for precise matching with the preset hole on the power supply device. During installation, the installation direction of the power line I and the signal line can be changed by rotating the housing.

[0013] In a further specific embodiment of this utility model, a sealing gasket is also included. The sealing gasket is disposed on the four periphery of the housing on the side opposite to the cover. The mounting screw passes through the sealing gasket to fix the sealing gasket between the housing and the power supply device to seal the assembly gap between the housing and the power supply device.

[0014] Due to the aforementioned structure, this utility model offers several advantages over existing technologies: First, it improves installation efficiency. The integrated design combines power terminals, signal terminals, and explosion-proof valves into a single housing, reducing the number of installation components by half and shrinking the installation area. The standard positioning holes perfectly match the pre-drilled holes in the battery box, eliminating deviations in the installation of various independent components and shortening installation steps and time. Pre-installed cables of different colors and positioning slots prevent cable tangling and improve wiring efficiency. Second, it enhances safety performance in multiple dimensions. The creepage distance and internal protection are optimized, the built-in explosion-proof valve improves the pressure resistance level, and a physical barrier prevents mis-insertion. Third, it reduces production costs. The integrated housing is injection molded, reducing material costs and unit production costs. It supports unit replacement of signal terminals and explosion-proof valves, thus reducing maintenance costs. Attached Figure Description

[0015] Figure 1 This is an exploded view of the present invention; Figure 2 This is a schematic diagram of the back of this utility model.

[0016] In the diagram: 1. Housing, 11. Housing cavity, 12. Vent hole, 13. Communication interface, 14. Power cord positioning groove, 15. Screw hole one, 16. Screw hole two, 161. Mounting screw, 17. Explosion-proof valve mounting hole; 2. Housing cover, 21. Housing cover screw; 3. Power terminal, 31. Wiring screw; 4. Signal terminal; 5. Explosion-proof valve; 6. Insulating plate; 7. Signal line; 8. Power cord one, 81. Cable sheath; 9. Sealing gasket; 10. Power cord two. Detailed Implementation

[0017] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. However, the description of the embodiments is not a limitation on the technical solution. Any formal but not substantive changes made based on the concept of this utility model should be considered within the protection scope of this utility model.

[0018] In the following description, all directional (or orientational) concepts involving up, down, left, right, front, and back refer to the position of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be construed as a special limitation on the technical solution provided by this utility model.

[0019] Please see Figure 1 and Figure 2 This utility model relates to an electrical connector device for connecting power supply equipment and electrical equipment. This embodiment uses a new energy vehicle as an example. The electrical connector device can be used to connect a battery pack and electrical equipment within the vehicle that requires power from the battery pack, such as controllers. The electrical connector device is installed on the battery pack housing and includes a housing 1 and a cover 2. The housing 1 has a housing cavity 11 on the side facing the cover 2. The cover 2 is fitted to the housing 1 to seal the housing cavity 11. The housing 1 and cover 2 are made of high-strength engineering plastic and are integrally injection molded parts of PA+% glass fiber.

[0020] The electrical connector device also includes a pair of power terminals 3, a signal terminal 4, and an explosion-proof valve 5. The pair of power terminals 3 are symmetrically arranged in the middle of the housing cavity 11. The explosion-proof valve 5 and the signal terminal 4 are located above and below the pair of power terminals 3, respectively. The power terminals 3, signal terminal 4, and explosion-proof valve 5 are arranged compactly within the housing cavity 11, penetrating the housing cavity 11 and extending towards the rear of the housing 1. The explosion-proof valve 5 is sealed to the explosion-proof valve mounting hole 17 on the housing 1. The explosion-proof valve 5 has been changed from an external to an internal design, eliminating the drawbacks of a chaotic layout. The housing 1 has multiple vent holes 12 spaced apart in the middle of the bottom sidewall. A waterproof and breathable membrane is also provided outside the vent holes 12. Gas inside the battery pack is discharged to the outside of the pack through the explosion-proof valve 5, the vent holes 12, and the waterproof and breathable membrane, thus forming a pressure relief channel. When the gas pressure inside the battery pack exceeds the limit, it is directionally released to a safe area, achieving overpressure protection. The housing 1 has a signal wire slot 13 on its top sidewall corresponding to the signal terminal 4, and power line positioning slots 14 are formed on the left and right sides of the signal wire slot 13. The signal wire 7 is connected to the signal terminal 4 through a male and female aviation plug assembly and leads out of the housing 1 through the signal wire slot 13. In this embodiment, the low-voltage signal terminal 4 uses a shielded wire harness, which can reduce signal interference and meet safety insulation requirements. The pair of power terminals 3 have internal threaded holes. The end of the pair of power terminals 3 facing away from the housing cover 2 is connected to and secured with a second power line 10 by a wiring screw 31. The second power line 10 is connected to the battery pack. The end of the pair of power terminals 3 facing the housing cover 2 is connected to and secured with a first power line 8 by a wiring screw 31. The first power line 8 is connected to the electrical device. The pair of power lines 8 are equipped with cable sheaths 81 of different colors, such as a red cable sheath 81 and a black cable sheath 81. The cable sheaths 81 are fixed by the power line positioning slots 14, which can correct the direction when installing cables. The signal line 7 and power line 8 are oriented in the same direction to avoid cable crossing and reduce electromagnetic interference. An insulating plate 6 is also provided in the upper part of the housing cavity 11 to cover the explosion-proof valve 5, isolating the explosion-proof valve 5 from the power line 8.

[0021] Furthermore, the pair of power terminals 3 are aluminum alloy terminals; in this embodiment, 6061-T6 aluminum alloy is used, which can significantly increase the current carrying capacity compared to existing brass terminals. The spacing between the pair of power terminals 3 is ≥10mm, optimizing the creepage distance.

[0022] Furthermore, the cross-section of the housing 1 is square. Screw holes 15 are formed at the four corners of the housing 1 facing the cover 2. Cover screws 21 are provided at the four corners of the housing 1 for connecting with the screw holes 15 to secure the housing 1 and cover 2. The housing 1 has a second screw hole 16 on the side facing away from the cover 2. The second screw hole 16 is connected to the outer casing of the device, i.e., the battery pack housing in this embodiment, by mounting screws 161. The second screw hole 16 is configured as a standardized mounting hole, enabling precise matching with pre-set holes on the battery pack housing. During installation, the housing 1 can be rotated to ensure that the power cable 8 and signal cable 7 meet the installation direction requirements, eliminating installation positioning deviations.

[0023] Furthermore, it also includes a sealing gasket 9, which is disposed on the four periphery of the housing 1 on the side opposite to the cover 2. The mounting screw 161 passes through the sealing gasket 9 to fix the sealing gasket 9 to the housing 1 and the equipment housing to seal the assembly gap between the housing 1 and the power supply equipment, thereby achieving an IP67 protection level.

[0024] This utility model adopts an integrated design that integrates the power terminal 3, signal terminal 4, and explosion-proof valve 5 into a single housing 1. The structure is compact and reasonable, which solves the problems of chaotic layout and complicated installation in the prior art and improves the electrical performance of the product, thus achieving the purpose of the invention.

Claims

1. An electrical connector device comprising a housing (1) and a housing cover (2) which fits to the housing (1), said housing (1) being formed with a housing cavity (11) on the side facing the housing cover (2), characterized in that: It also includes a pair of power terminals (3), a signal terminal (4), and an explosion-proof valve (5). The pair of power terminals (3) are symmetrically arranged in the middle of the housing cavity (11). The explosion-proof valve (5) and the signal terminal (4) correspond to the middle position of the pair of power terminals (3) and are respectively located above and below the pair of power terminals (3). A vent hole (12) is formed in the middle of the bottom side wall of the housing (1). The power terminals (3), the signal terminal (4), and the explosion-proof valve (5) are arranged through the housing cavity (11) and extend to the rear side of the housing (1). A cover is also provided in the upper part of the housing cavity (11). The insulating plate (6) of the explosion-proof valve (5) is covered. The housing (1) has a signal wire slot (13) on the top side wall corresponding to the signal terminal (4), and power line positioning slots (14) are formed on the left and right sides of the signal wire slot (13). The signal wire (7) is connected to the signal terminal (4) and led out of the housing (1) through the signal wire slot (13). The end of the power terminal (3) facing the housing cover (2) is connected to the first power wire (8). The first power wire (8) is locked in the power line positioning slot (14), while the end of the power terminal (3) facing away from the housing cover (2) is led out to the second power wire (10).

2. The electrical connector device according to claim 1, characterized in that: The pair of power terminals (3) have internal threaded holes. The power terminals (3) are connected and fastened to power line one (8) and power line two (10) by wiring screws (31). Power line two (10) is used to connect to power equipment, while power line one (8) is used to connect to electrical equipment. The pair of power lines one (8) are equipped with cable sheaths (81) of different colors. The cable sheaths (81) are fixed in the power line positioning groove (14).

3. An electrical connector device according to claim 1, characterized in that: The spacing between the pair of power terminals (3) is ≥10mm.

4. An electrical connector device according to claim 1, characterized in that: The pair of power terminals (3) are aluminum alloy terminals.

5. An electrical connector device according to claim 1, characterized in that: The shell (1) and the cover (2) are PA+% glass fiber injection molded parts.

6. An electrical connector device according to claim 1, characterized in that: The shell (1) has a square cross-section. The shell (1) has four screw holes (15) at the four corners facing the shell cover (2). The shell cover (2) has shell cover screws (21) at the four corners for connecting with the screw holes (15) to fix the shell (1) and the shell cover (2). The shell (1) has a screw hole (16) on the side facing away from the shell cover (2). The screw hole (16) is connected to the power supply device by mounting screws (161).

7. An electrical connector device according to claim 6, characterized in that: The screw hole 2 (16) is configured as a standardized mounting hole for precise matching with the pre-set holes on the power supply equipment. During installation, the mounting direction of the power line 1 (8) and the signal line (7) can be changed by rotating the housing (1).

8. An electrical connector device according to claim 6, characterized in that: It also includes a sealing gasket (9), which is disposed on the four periphery of the housing (1) on the side opposite to the cover (2). The mounting screw (161) passes through the sealing gasket (9) to fix the sealing gasket (9) between the housing (1) and the power supply housing, thereby sealing the assembly gap between the housing (1) and the power supply.

Images