Waterproof high-voltage connector for electric automobile

Abstract

The utility model discloses a waterproof high-voltage connector used for an electric automobile, which relates to the technical field of electric automobiles and comprises a connector body, the connector body is composed of a contact piece and a terminal strip, the contact piece is movably connected with the terminal strip, and the contact piece comprises a male end protective shell. An output cable is fixedly installed on the outer wall of the side, away from the terminal strip, of the male end protection shell, and a first contact is fixedly installed on the inner wall of the male end protection shell. The terminal strip comprises a female end protection shell, through arrangement of a protection ring, a sealing groove, a connection notch and the like, the sealing performance of the connector body is guaranteed, the situation that moisture or other external substances in the environment invade the connector body to cause internal corrosion or faults of the connector body is effectively avoided, the fault risk of an electrical system can be reduced, and the service life of the connector body is prolonged. The driving system and other electrical components of the electric automobile can be ensured to operate stably, the damage of moisture to the battery system is prevented, the service life of the battery is prolonged, and the performance of the battery is maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to a waterproof high-voltage connector for electric vehicles. Background Art

[0002] High-voltage connectors play a vital role in electric vehicles. High-voltage connectors in electric vehicles are mainly used to connect various high-voltage components, such as battery packs, motor controllers, DCDC converters, etc. They can realize the transmission and distribution of high-voltage currents, while ensuring that the electrical connections between various components are stable and reliable;

[0003] Currently, the high-voltage connectors of electric vehicles are usually located under the vehicle chassis, close to the ground or close to the wheel hub, making it easy for moisture or other external substances in the environment to invade the high-voltage connectors, causing internal corrosion or failure of the high-voltage connectors, thereby reducing the performance and life of the battery, thereby affecting the normal operation of the electric vehicle's drive system, battery management system and other key electrical components. Utility Model Content

[0004] In view of this, in view of the deficiencies in the prior art, the utility model provides a waterproof high-voltage connector for an electric vehicle to solve the problems of imperfect waterproof performance of the high-voltage connector and loose connection of the high-voltage connector in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waterproof high-voltage connector for electric vehicles, comprising a connector body, wherein the connector body is composed of a contact piece and a terminal block, wherein the contact piece is movably connected to the terminal block, wherein the contact piece comprises a male end protective shell, wherein an output cable is fixedly installed on an outer wall of the male end protective shell on a side away from the terminal block, and a contact one is fixedly installed on an inner wall of the male end protective shell; wherein the terminal block comprises a female end protective shell, wherein an input cable is fixedly installed on an outer wall of the female end protective shell on a side away from the contact piece, and a contact two is fixedly installed on an inner wall of the female end protective shell; both outer walls of the male end protective shell are provided with mounting top plates, and both outer walls of the female end protective shell are provided with mounting bottom plates, wherein the mounting top plate and the mounting bottom plate are both used for mutual clamping between the contact piece and the terminal block.

[0006] Preferably, a groove is provided on the inner wall of the male end protective shell, and a protrusion is provided on the outer wall of the female end protective shell, and the groove on the male end protective shell is matched with the protrusion on the female end protective shell.

[0007] Preferably, the contact point 1 is matched with the contact point 2, and the contact point 1 is electrically connected with the contact point 2.

[0008] Preferably, a protective ring is provided on the outer surface of the female protective shell, and a sealing groove is opened on the inner surface of the protective ring. The sealing groove is adapted to the front end of the male protective shell, and the sealing groove is used to fill the gap between the front end of the male protective shell and the rear end of the female protective shell.

[0009] Preferably, the front end outer wall of the female end protective shell and the rear end inner wall of the male end protective shell are both provided with connecting grooves, and the two connecting grooves fit each other, and the cross-sections of the connecting grooves are both L-shaped, and the two are staggered with each other.

[0010] Preferably, a mounting cylinder is provided at the bottom of the mounting top plate, a connecting shaft is slidably installed on the inner surface of the mounting cylinder through a circular opening, a baffle is fixedly installed on one end of the connecting shaft located outside the mounting cylinder, a clamping block is fixedly installed on the other end of the connecting shaft, a reset spring is fixedly installed between the clamping block and the inside of the circular opening, and the reset spring is sleeved on the outer surface of the connecting shaft.

[0011] Preferably, a limiting column is fixedly installed on the top of the mounting base plate, a fixed block is fixedly installed on the top of the limiting column, a movable block is slidably installed on the outer surface of the limiting column, a limiting ring is sleeved on the outer surface of the limiting column, a telescopic spring is fixedly installed between the limiting ring and the mounting base plate, and the telescopic spring is located outside the movable block.

[0012] Preferably, connecting frames are rotatably connected to both sides of the mounting base plate, a wedge block is provided on the top of the connecting frame, and a wedge groove is opened on the top of the mounting top plate, and the wedge groove is adapted to the wedge block.

[0013] Preferably, the bottom of the mounting tube is matched with the top of the limiting ring.

[0014] Compared with the prior art, the utility model provides a waterproof high-voltage connector for electric vehicles, which has the following beneficial effects:

[0015] The sealing performance of the connector body is ensured by setting protective rings, sealing grooves, connection notches, etc., effectively preventing moisture or other external substances in the environment from invading its interior and causing internal corrosion or failure of the connector body. The risk of failure of the electrical system can be reduced, ensuring that the drive system and other electrical components of the electric vehicle can operate stably, and helping to prevent moisture from damaging the battery system, extending the battery life and maintaining its performance.

[0016] By installing the cylinder, the clamping block, the return spring, the fixed block and the movable block, the contact piece and the terminal row are clamped together, and then the wedge block on the connecting frame fits with the wedge groove on the mounting top plate, so that there are multiple connection modes between the contact piece and the terminal row. The multiple connection modes can provide redundancy for the connector body, help to improve the reliability and stability of the connector body, and avoid the connector body being affected by external forces on the firmness of the connection between the two. At the same time, the clamping point between the contact piece and the terminal row is located outside the two, and the connector body is sealed, thereby further improving the waterproof performance of the connector body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of another perspective of the utility model;

[0019] Figure 3 A schematic diagram of the structure of the terminal block in the utility model;

[0020] Figure 4 For this utility model Figure 3 A magnified view of the structure at center A;

[0021] Figure 5 It is a schematic diagram of the structure of the contact member in the utility model;

[0022] Figure 6 For this utility model Figure 5 A magnified view of the structure at B in the middle;

[0023] Figure 7 It is a structural schematic diagram of the clamping state of the contact piece and the terminal block in the utility model;

[0024] Figure 8 It is a schematic diagram of the overall cutaway structure of the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Connector body; 11. Contact; 1101. Male end protective shell; 1102. Output cable; 1103. Contact one; 12. Terminal block; 1201. Female end protective shell; 1202. Input cable; 1203. Contact two;

[0027] 2. Protective ring; 3. Sealing groove;

[0028] 4. Install the bottom plate; 401, limit column; 402, fixed block; 403, movable block; 404, limit ring; 405, telescopic spring; 406, connecting frame;

[0029] 5. Install the top plate; 501. Install the cylinder; 502. Connect the shaft; 503. Baffle; 504. Block; 505. Return spring; 506. Wedge groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The utility model is further described in detail below based on the drawings and embodiments.

[0032] Example

[0033] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 as well as Figure 8 As shown, in order to solve the problems mentioned in the technical solution, the embodiment of the present application provides a waterproof high-voltage connector for an electric vehicle, including a connector body 1, the connector body 1 is composed of a contact 11 and a terminal row 12, the contact 11 is movably connected to the terminal row 12, the contact 11 includes a male end protective shell 1101, the outer wall of the male end protective shell 1101 away from the terminal row 12 is fixedly installed with an output cable 1102, and the inner wall of the male end protective shell 1101 is fixedly installed with a contact one 1103; the terminal row 12 includes a female end protective shell 1201, the outer wall of the female end protective shell 1201 away from the contact 11 is fixedly installed with an input cable 1202, and the inner wall of the female end protective shell 1201 is fixedly installed with a contact two 1203; the contact one 1103 is adapted to the contact two 1203, and the contact one 1103 and the contact two 1203 are electrically connected, which is used to realize the connection and disconnection of the current. The inner wall of the male end protection shell 1101 is provided with a groove, and the outer wall of the female end protection shell 1201 is provided with a protrusion. The groove on the male end protection shell 1101 is adapted to the protrusion on the female end protection shell 1201, which is used to facilitate the mutual clamping between the male end protection shell 1101 and the female end protection shell 1201. The outer walls on both sides of the male end protection shell 1101 are provided with a mounting top plate 5, and the outer walls on both sides of the female end protection shell 1201 are provided with a mounting bottom plate 4. The mounting top plate 5 and the mounting bottom plate 4 are both used for the mutual clamping between the contact 11 and the terminal row 12, so as to make the connection between the two more firm and avoid looseness during use.

[0034] The outer surface of the female protective shell 1201 is provided with a protective ring 2, and the inner surface of the protective ring 2 is provided with a sealing groove 3, which is matched with the front end of the male protective shell 1101, and the sealing groove 3 is used to fill the gap between the front end of the male protective shell 1101 and the rear end of the female protective shell 1201, and a sealing ring is provided inside the sealing groove 3, which is used to take preliminary waterproof measures for the connector body 1. The front end outer wall of the female protective shell 1201 and the rear end inner wall of the male protective shell 1101 are both provided with connecting notches, and the two connecting notches fit each other, and the cross-sections of the connecting notches are L-shaped, and the two are staggered with each other, wherein the two connecting notches are provided with sealing pads, so that the two fit more closely, and the connector body 1 can be subjected to secondary waterproof measures to ensure its sealing performance.

[0035] It is worth mentioning that when the contact piece 11 and the terminal row 12 are connected to each other, the inner wall of the male end protective shell 1101 fits with the outer wall of the female end protective shell 1201, and the male end protective shell 1101 gradually goes deeper, so that the contact 1 1103 and the contact 2 1203 inside the two contact each other and connect the circuit. At the same time, the front end of the male end protective shell 1101 extends into the interior of the protective ring 2 and fits tightly with the sealing groove 3. The sealing ring is then used to make the intersection of the male end protective shell 1101 and the female end protective shell 1201 in a sealed state. At this time, the inner wall of the male end protective shell 1101 and the connecting groove on the front end of the female end protective shell 1201 also fit each other. The sealing gasket arranged thereon causes the two L-shaped connecting grooves to be staggered and fit tightly with each other, thereby ensuring the sealing performance of the connector body 1, and effectively preventing moisture or other external substances in the environment from invading its interior and causing internal corrosion or failure of the connector body 1.

[0036] Further examples:

[0037] Please refer to Figures 3 to 7 As shown, a mounting cylinder 501 is provided at the bottom of the mounting top plate 5, and a connecting shaft 502 is slidably installed on the inner surface of the mounting cylinder 501 through a circular opening, and a baffle 503 is fixedly installed on one end of the connecting shaft 502 located outside the mounting cylinder 501, which is used to limit the displacement distance of the connecting shaft 502 and prevent it from displacing too deeply into the mounting cylinder 501 and affecting the normal use of the equipment; a clamping block 504 is fixedly installed on the other end of the connecting shaft 502, and a reset spring 505 is fixedly installed on the clamping block 504 and the inside of the circular opening, and the reset spring 505 is sleeved on the outer surface of the connecting shaft 502.

[0038] A limiting column 401 is fixedly installed on the top of the installation base plate 4, a fixed block 402 is fixedly installed on the top of the limiting column 401, and a movable block 403 is slidably installed on the outer surface of the limiting column 401, wherein the fixed block 402 and the movable block 403 are both in a terraced structure and are the same size, and are symmetrically distributed, the fixed block 402 is narrow at the top and wide at the bottom, and the movable block 403 is opposite; a limiting ring 404 is sleeved on the outer surface of the limiting column 401, and a telescopic spring 405 is fixedly installed between the limiting ring 404 and the installation base plate 4, and the telescopic spring 405 is located outside the movable block 403. The two sides of the installation base plate 4 are connected to the connecting frame 406 for common rotation, and a wedge block is arranged on the top of the connecting frame 406, and a wedge groove 506 is opened on the top of the installation top plate 5, and the wedge groove 506 is adapted to the wedge block. The bottom of the mounting tube 501 is matched with the top of the limiting ring 404, wherein the limiting spring is used to tightly fit the wedge block on the connecting frame 406 with the wedge groove 506 on the mounting top plate 5 to prevent the connector body 1 from being affected by external forces and affecting the firmness of the connection between the two.

[0039] Everything in the above example works like this:

[0040] When in use, the terminal block 12 should be pre-installed under the chassis of the electric vehicle, and close to the ground or the wheel hub. When the circuit needs to be connected, the user first aligns the male end protection shell 1101 of the contact member 11 with the female end protection shell 1201 on the terminal block 12, and distinguishes the positive and negative directions of the installation by the positions of the grooves and protrusions set on the two. After the installation direction is adjusted, the user inserts the male end protection shell 1101 into the outer wall of the female end protection shell 1201, so that the front end of the male end protection shell 1101 enters the interior of the sealing groove 3 and is in close contact with the sealing ring inside it. At this time, the inner wall of the male end protection shell 1101 The connecting notches on the front end of the female end protective shell 1201 also fit together, and the sealing gasket arranged thereon causes the two L-shaped connecting notches to interlace and fit tightly with each other, thereby ensuring the sealing performance of the connector body 1, effectively preventing moisture or other external substances in the environment from invading its interior and causing internal corrosion or failure of the connector body 1, which can reduce the risk of failure of the electrical system, ensure the stable operation of the drive system and other electrical components of the electric vehicle, and help prevent moisture from damaging the battery system, thereby extending the battery life and maintaining its performance; then align the installation cylinder 501 with the fixing block 402, and continue to extend inward, so that the blocks 504 on both sides of the inside of the installation cylinder 501 are in contact with the fixed block 402, and under the squeezing action of the stepped fixed block 402, the two blocks 504 push the connecting shaft 502 to slide inward, at this time, the two baffles 503 gradually move away from the outer surface of the installation cylinder 501, and the two return springs 505 continue to shrink. As the installation top plate 5 continues to descend, the two blocks 504 slide to the bottom of the fixed block 402. At this time, the two blocks 504 lose the limiting effect of the fixed block 402, and the two return springs 505 gradually extend and reset, pushing the two blocks 504 to fit in with the fixed block 402. The bottom of the fixing block 402 is fixed, and then the user rotates the connecting frame 406, so that the wedge-shaped block on the connecting frame 406 and the wedge-shaped groove 506 on the mounting top plate 5 fit each other, so that there are multiple connection modes between the contact piece 11 and the terminal row 12. The multiple connection modes can provide redundancy for the connector body 1, which helps to improve the reliability and stability of the connector body 1 and prevent the connector body 1 from being affected by external forces. The clamping part between the contact piece 11 and the terminal row 12 is located outside the two, and the connector body 1 is sealed, thereby further improving the waterproof performance of the connector body 1;

[0041] When the circuit needs to be disconnected, similarly, the operation can be performed in the opposite manner according to the above principle. The user first pushes the male end protective shell 1101 inward to cause the wedge block on the connecting frame 406 to disengage from the wedge groove 506 on the mounting top plate 5, and then rotates the connecting frame 406. At this time, the two card blocks 504 contact the top of the movable block 403 and slide inward, causing the top of the card blocks 504 to contact the outer surface of the movable block 403. Then, the user pulls the male end protective shell 1101 outward, and the two card blocks 504 pull the movable block 403 to slide upward along the connecting shaft 502 and fit the bottom of the fixed block 402. Then, under the limiting action of the fixed block 402, the two card blocks 504 slide from the outer surface of the movable block 403 to the outer surface of the fixed block 402, and then the male end protective shell 1101 is disengaged from the female end protective shell 1201, and then the circuit is also disconnected.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof high-voltage connector for an electric vehicle, comprising a connector body (1), wherein the connector body (1) is composed of a contact piece (11) and a terminal block (12), wherein the contact piece (11) is movably connected to the terminal block (12), and characterized in that: The contact member (11) comprises a male end protection shell (1101), an output cable (1102) is fixedly mounted on an outer wall of a side of the male end protection shell (1101) away from the terminal block (12), and a contact point 1 (1103) is fixedly mounted on an inner wall of the male end protection shell (1101); The terminal block (12) comprises a female end protection shell (1201), an input cable (1202) is fixedly mounted on an outer wall of a side of the female end protection shell (1201) away from the contact piece (11), and a second contact (1203) is fixedly mounted on an inner wall of the female end protection shell (1201); The outer walls on both sides of the male end protection shell (1101) are provided with mounting top plates (5), and the outer walls on both sides of the female end protection shell (1201) are provided with mounting bottom plates (4), and the mounting top plates (5) and the mounting bottom plates (4) are both used for mutual clamping between the contact piece (11) and the terminal block (12).

2. A waterproof high-voltage connector for electric vehicles according to claim 1, characterized in that: The inner wall of the male end protection shell (1101) is provided with a groove, and the outer wall of the female end protection shell (1201) is provided with a protrusion, and the groove on the male end protection shell (1101) is adapted to the protrusion on the female end protection shell (1201).

3. A waterproof high-voltage connector for electric vehicles according to claim 2, characterized in that: The contact point 1 (1103) is adapted to the contact point 2 (1203), and the contact point 1 (1103) is electrically connected to the contact point 2 (1203).

4. A waterproof high-voltage connector for electric vehicles according to claim 1, characterized in that: The outer surface of the female end protective shell (1201) is provided with a protective ring (2), and the inner surface of the protective ring (2) is provided with a sealing groove (3), the sealing groove (3) is adapted to the front end of the male end protective shell (1101), and the sealing groove (3) is used to fill the gap between the front end of the male end protective shell (1101) and the rear end of the female end protective shell (1201).

5. A waterproof high-voltage connector for electric vehicles according to claim 4, characterized in that: The front end outer wall of the female end protection shell (1201) and the rear end inner wall of the male end protection shell (1101) are both provided with connection slots, and the two connection slots fit each other, and the cross-sections of the connection slots are both L-shaped, and the two are staggered with each other.

6. A waterproof high-voltage connector for electric vehicles according to claim 1, characterized in that: A mounting cylinder (501) is provided at the bottom of the mounting top plate (5), a connecting shaft (502) is slidably mounted on the inner surface of the mounting cylinder (501) through a circular opening, a baffle (503) is fixedly mounted on one end of the connecting shaft (502) located outside the mounting cylinder (501), a clamping block (504) is fixedly mounted on the other end of the connecting shaft (502), a return spring (505) is fixedly mounted between the clamping block (504) and the inside of the circular opening, and the return spring (505) is sleeved on the outer surface of the connecting shaft (502).

7. A waterproof high-voltage connector for electric vehicles according to claim 6, characterized in that: A limiting column (401) is fixedly installed on the top of the installation base plate (4), a fixed block (402) is fixedly installed on the top of the limiting column (401), a movable block (403) is slidably installed on the outer surface of the limiting column (401), a limiting ring (404) is sleeved on the outer surface of the limiting column (401), a telescopic spring (405) is fixedly installed between the limiting ring (404) and the installation base plate (4), and the telescopic spring (405) is located outside the movable block (403).

8. A waterproof high-voltage connector for electric vehicles according to claim 7, characterized in that: The two sides of the installation base plate (4) are rotatably connected with a connecting frame (406), the top of the connecting frame (406) is provided with a wedge block, and the top of the installation top plate (5) is provided with a wedge groove (506), and the wedge groove (506) is adapted to the wedge block.

9. A waterproof high-voltage connector for electric vehicles according to claim 8, characterized in that: The bottom of the installation cylinder (501) is matched with the top of the limiting ring (404).

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