High-voltage connector socket and power battery high-voltage connector

Abstract

The utility model relates to the technical field of electric vehicle power devices, in particular to a high-voltage connector socket and a power battery high-voltage connector. According to the high-voltage connector socket, the supporting and restraining structure is arranged in the space between the enclosure wall of the existing high-voltage connector socket and the outer wall of the terminal mounting hole, and the elastic clamping jaw and / or the socket conductive terminal are / is limited and restrained through the supporting and restraining structure, so that the radial vibration of the socket conductive terminal can be greatly inhibited in the use process of the socket; therefore, a good anti-vibration effect is achieved, mutual abrasion between the socket conductive terminals and the plug conductive terminals is avoided, and the service life of the socket is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric vehicle power device technical field especially, a kind of high-voltage connector socket and power battery high-voltage connector. BACKGROUND

[0002] The high-voltage unit on the new energy vehicle on the market at present mainly includes battery unit, electric control unit and high-voltage distribution unit etc., and the transmission of high-voltage electric signal is realized between high-voltage unit by high-voltage connector. High-voltage connector can be divided into discharge connector, fast charging connector, slow charging connector, heating connector and DC connector according to use, and can be divided into fast plug connector, bolted connector and maintenance switch according to type. High-voltage connector includes socket shell, contact shell, waterproof rubber ring, high-voltage male and female terminal, high-voltage interlock terminal etc., wherein socket shell, plug shell adopt insulating material, play the role of structure fixation and mechanical support, waterproof rubber ring is arranged between mounting surface and fixed box, between plug and socket, between plug and wiring harness etc., realize the sealing of connecting place, high-voltage male and female terminal is transmitted high-voltage electric signal between each unit by the conductive connection of both, and high-voltage interlock terminal is the structure for indicating the passing state of high-voltage electric signal by low-voltage electric signal.

[0003] Socket shell is usually formed by injection molding, and conductive terminal corresponding to plug is arranged on socket. There are two ways to install conductive terminal on socket, namely injection molding and assembly molding, as follows:

[0004] As shown in Figure 1 Injection molding is to place socket conductive terminal 1 into injection mold of socket shell 3 before injection molding, to realize the fixed installation of socket conductive terminal 1 and socket shell 3 by injection molding, and plug conductive terminal 10 is fixed in plug shell 6. However, once there is a large dimensional tolerance in this structure, socket conductive terminal 1 is rigidly connected with socket shell 3, and plug conductive terminal 10 and socket conductive terminal 1 cannot be accurately matched during plugging of plug and socket, the force between two conductive terminals is uneven, which may cause local heating aging, wear and tear, affect current-carrying capacity and electrical connection reliability.

[0005] As shown in Figures 2-4As shown, the assembly forming is that the socket shell 3 is injection molded first, the socket shell 3, the socket shell 3 includes a mounting flange and a mounting pipe section extending to one side of the mounting flange, the mounting pipe section is a top inwardly tapered pipe section, the inner cavity of the mounting pipe section constitutes a terminal mounting hole 12, the tapered inner hole constitutes a plug-in hole 7 corresponding to the conductive terminal 10 of the matched plug, the periphery of the terminal mounting hole 12 is provided with a surrounding wall 30, the annular space 8 is formed between the surrounding wall 30 and the hole wall of the terminal mounting hole 12, the annular space 8 is divided into a plurality of separated cavities by a plurality of ribbed ribs connecting the surrounding wall 30 and the outer wall of the terminal mounting hole 12 and evenly distributed in the circumferential direction, the hole wall of the terminal mounting hole 12 is provided with a hollow at a position corresponding to each separated cavity, and then an elastic clamping jaw 5 is formed, the root of which is suspended from the lower end of the mounting hole and extends upward, the upper end position of the elastic clamping jaw 5 is provided with a claw body 50 protruding inward, the socket conductive terminal 1 includes a cylindrical body 13, the position close to the upper end of the cylindrical body 13 is provided with a clamping ring groove 11, in the process of inserting the socket conductive terminal 1 into the mounting hole 4, the elastic clamping jaw 5 is elastically deformed into the annular space 8, and after being inserted in place, the claw body 50 of the elastic clamping jaw 5 is matched with the clamping ring groove 11 to realize the anti-falling limiting of the socket conductive terminal 1.

[0006] In order to ensure that the socket conductive terminal 1 can be smoothly installed into the socket shell 3, there is usually a certain gap between the cylindrical body part of the socket conductive terminal 1 and the elastic clamping jaw 5, and the elastic coefficient of the elastic clamping jaw 5 cannot be too large, but in actual use, since the socket base is generally fixed with a copper bar, due to the vibration of the vehicle during operation, the copper bar will vibrate violently due to its large weight, and then drive the socket conductive terminal 1 to vibrate in the radial direction in the mounting hole 4, which will aggravate the wear of the conductive terminal between the plug and the socket, and the serious wear will cause the terminal to heat and even arc. The current countermeasures are generally to use a soft copper bar to reduce the influence of copper bar vibration on the connector terminal, but the cost of the soft copper bar is higher than that of the hard copper bar, and it cannot effectively solve the problem of terminal wear during vibration. Practical new type content

[0007] The utility model aims at providing a high-voltage connector socket to solve the problem that the socket conductive terminal will vibrate in the radial direction in the existing assembly forming high-voltage connector socket, resulting in serious wear of the conductive terminal.

[0008] The utility model aims at providing a high-voltage connector socket to solve the problem that the socket conductive terminal will vibrate in the radial direction in the existing assembly forming high-voltage connector socket, resulting in serious wear of the conductive terminal.

[0009] The high-voltage connector socket of the utility model adopts the following technical scheme:

[0010] A high-voltage connector socket comprises a socket housing, a terminal mounting hole is arranged in the socket housing, a socket conductive terminal is clamped in the terminal mounting hole through an elastic clamping jaw formed on the hole wall of the terminal mounting hole, a surrounding wall is arranged on the periphery of the terminal mounting hole, and an avoiding space for allowing the elastic clamping jaw to deform radially outward is arranged between the surrounding wall and the outer wall of the terminal mounting hole, and a supporting and restraining structure for radially limiting the elastic clamping jaw and / or the socket conductive terminal is arranged in the avoiding space.

[0011] Further, the supporting and restraining structure is a glue layer filled into the avoiding space through an upper end opening between the surrounding wall and the terminal mounting hole to fit the elastic clamping jaw and the conductive terminal.

[0012] Further, the top surface of the glue layer is flush with the top surface of the conductive terminal.

[0013] Further, the glue layer is a fluororubber layer or a silicone rubber layer.

[0014] Further, the supporting and restraining structure is an elastic supporting structure.

[0015] Beneficial effects: The high-voltage connector socket is an improved invention. By arranging the supporting and restraining structure in the space between the surrounding wall and the outer wall of the terminal mounting hole of the existing high-voltage connector socket, the elastic clamping jaw and / or the socket conductive terminal are limited and restrained by the supporting and restraining structure, which can greatly inhibit the radial vibration of the socket conductive terminal during the use of the socket, so as to achieve a better anti-shock effect, thereby avoiding the mutual abrasion between the socket conductive terminal and the plug conductive terminal, and improving the service life of the socket.

[0016] A high-voltage connector of a power battery comprises a high-voltage connector socket, the high-voltage connector socket comprises a socket housing, a terminal mounting hole is arranged in the socket housing, a socket conductive terminal is clamped in the terminal mounting hole through an elastic clamping jaw formed on the hole wall of the terminal mounting hole, a surrounding wall is arranged on the periphery of the terminal mounting hole, and an avoiding space for allowing the elastic clamping jaw to deform radially outward is arranged between the surrounding wall and the outer wall of the terminal mounting hole, and a supporting and restraining structure for radially limiting the elastic clamping jaw and / or the socket conductive terminal is arranged in the avoiding space.

[0017] Further, the supporting and restraining structure is a glue layer filled into the avoiding space through an upper end opening between the surrounding wall and the terminal mounting hole to fit the elastic clamping jaw and the conductive terminal.

[0018] Further, the top surface of the glue layer is flush with the top surface of the conductive terminal.

[0019] Further, the glue layer is a fluororubber layer or a silicone rubber layer.

[0020] Further, the supporting and restraining structure is an elastic supporting structure.

[0021] Beneficial effects: The high-voltage connector of the utility model is an improved invention. By setting the supporting and restraining structure in the space between the surrounding wall of the existing high-voltage connector socket and the outer wall of the terminal mounting hole, the elastic clamping jaw and / or the socket conductive terminal are limited and restrained by the supporting and restraining structure, which can greatly inhibit the radial vibration of the socket conductive terminal during the use of the socket, so as to achieve better anti-shock effect, thereby avoiding the mutual abrasion between the socket conductive terminal and the plug conductive terminal, and improving the service life of the socket. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure diagram of the existing high-voltage connector socket in which the socket conductive terminal and the socket shell are integrally injection molded;

[0023] Figure 2 It is a structure diagram of the existing high-voltage connector socket in which the socket conductive terminal and the socket shell are integrally injection molded;

[0024] Figure 3 It is a structure diagram of the existing high-voltage connector socket in which the socket conductive terminal and the socket shell are integrally injection molded; Figure 2 It is a structure diagram of the existing high-voltage connector socket in which the socket conductive terminal and the socket shell are integrally injection molded;

[0025] Figure 4 It is a structure diagram of the existing high-voltage connector socket in which the socket conductive terminal and the socket shell are integrally injection molded; Figure 2 It is a structure diagram of the existing high-voltage connector socket in which the socket conductive terminal and the socket shell are integrally injection molded;

[0026] Figure 5 It is a structure diagram of the existing high-voltage connector socket in which the socket conductive terminal and the socket shell are integrally injection molded.

[0027] In the figure: 1, socket conductive terminal; 2, supporting and restraining structure; 3, socket shell; 10, plug conductive terminal; 11, clamping ring groove; 12, mounting hole; 13, cylindrical body; 5, elastic clamping jaw; 50, jaw body; 6, plug shell; 7, plug-in hole; 8, annular space; 30, surrounding wall. DETAILED DESCRIPTION

[0028] In view of the problem that in the high-voltage connector socket of the prior art, in order to facilitate the installation of the socket conductive terminal, the socket conductive terminal is fixedly arranged in the mounting hole, so that the socket conductive terminal vibrates in the radial direction and abrades the plug conductive terminal in the vibration environment, the utility model sets the supporting and restraining structure for limiting and restraining the socket conductive terminal in the radial direction in the space between the outer wall of the mounting hole and the surrounding wall after the socket conductive terminal is mounted into the mounting hole of the socket shell, thereby inhibiting the radial vibration of the socket conductive terminal, and the above problem is solved.

[0029] The high-voltage connector socket of the utility model has the following specific implementation manners:

[0030] Based on the above concept, reference is made to Figures 2-5 In a basic embodiment, the high-voltage connector socket of the utility model is the same as the existing socket structure, including socket shell 3, socket shell 3 includes installation flange and installation pipe section extending to the side of installation flange, installation pipe section is the top inwardly-retracted closed pipe section, the inner cavity of installation pipe section constitutes terminal installation hole 12, the outer side of installation flange is provided with enclosing wall 30 at installation pipe section, the annular space 8 is formed between enclosing wall 30 and the hole wall of terminal installation hole 12, the annular space 8 is divided into multiple separate cavities by multiple ribbed bars connecting enclosing wall 30 and the outer wall of terminal installation hole 12 and evenly distributed in the circumferential direction, the hole wall of terminal installation hole 12 is provided with hollow at the position corresponding to each separate cavity, and then the elastic clamping jaw 5 is formed, which is suspended from the lower end of the installation hole along the connection from the lower to the upper, the upper end position of elastic clamping jaw 5 is provided with inwardly-protruding claw body 50, socket conductive terminal 1 includes cylindrical body 13, the position close to the upper end of cylindrical body 13 is provided with clamping ring groove 11, in the process of inserting socket conductive terminal 1 into installation hole 4, elastic clamping jaw 5 is elastically deformed into annular space 8, and after insertion in place, the anti-disengagement limiting of socket conductive terminal 1 is realized by the cooperation of claw body 50 of elastic clamping jaw 5 and clamping ring groove 11.

[0031] The key of the utility model lies in that the separate cavity is provided with a supporting and restraining structure for radially limiting the elastic clamping jaw and limiting the socket conductive terminal, and / or the separate cavity is provided with a supporting and restraining structure for directly radially limiting the socket conductive terminal. In this way, the radial vibration of the socket conductive terminal can be greatly inhibited during the use of the socket, so as to achieve better anti-shock effect, and the mutual abrasion between the socket conductive terminal and the plug conductive terminal is avoided, and the service life of the socket is improved.

[0032] In the preferred embodiment, the support constraint structure is a glue layer filled into the avoidance space through the upper end opening between the surrounding wall and the terminal mounting hole to fit the elastic clamping jaw and the conductive terminal. The glue layer is formed in the following way: after the conductive terminal 1 is prevented from being disengaged by the elastic clamping jaw 5, the glue liquid is filled through the upper end opening between the surrounding wall and the terminal mounting hole, i.e., the upper opening of the partition cavity, and after the filling is completed, the glue layer is cured to coat the elastic clamping jaw 5, while passing through the hollow socket to coat the conductive terminal 1, thereby forming the support constraint structure 2 between the conductive terminal 1 and the mounting hole 4. The glue layer can also have a certain sealing and waterproof effect, so as to avoid the entry of rainwater into the high-voltage unit through the gap between the conductive terminal 1 and the mounting hole 4 when the external protection fails, thereby affecting the normal operation of the vehicle and causing property loss. In other embodiments, the support constraint structure 2 can also be a support strip, such as a tile-shaped or columnar support strip, which is inserted into the gap between the conductive terminal 1 and the mounting hole 4 through the upper opening of the partition cavity, and the support strip is fitted to the outer wall of the conductive terminal 1 and the hole wall of the mounting hole 4 through the opposite side surfaces, thereby achieving a similar support effect. Of course, in some embodiments, the annular space formed by the surrounding wall and the terminal mounting hole is no longer provided with a rib, and at this time, the annular space between the outer walls of the surrounding wall and the terminal mounting hole is communicated in the circumferential direction, so that the elastic support sleeve can be directly inserted or the glue liquid can be directly injected.

[0033] In the preferred embodiment, the support constraint structure 2 is an elastic support structure, which can not only ensure the radial support effect but also realize the self-correction function during terminal insertion, and can also reduce the influence of copper bar pulling during vibration, thereby greatly improving the tolerance of the high-voltage connector to severe vibration working conditions.

[0034] In the preferred embodiment, when the cured glue layer is used as the support constraint structure, the top surface of the glue layer is flush with the top surface of the socket conductive terminal 1, which can ensure good radial support effect and can also avoid the loosening and deflection of the socket conductive terminal 1 due to insufficient support force, thereby causing serious wear and affecting the service life of the high-voltage connector. The top surface of the glue layer cannot be higher than the top of the socket conductive terminal 1, and at the same time, it cannot overflow to the contact part of the terminal of the plug and the socket, so as to avoid affecting the electrical connection effect between the terminals. In other embodiments, the top surface of the glue layer can also be lower than the top surface of the socket conductive terminal 1, for example, the top surface of the glue layer is located at the one-third or three-quarter position of the conductive terminal, and through reasonable design, similar effects can also be achieved.

[0035] In a preferred embodiment, when the elastic support structure is adopted, the filled glue liquid can be fluororubber or silicone rubber, the formed glue layer is a fluororubber layer or a silicone rubber layer, the glue layer is filled in the gap between the socket conductive terminal 1 and the mounting hole 4 to approximately cylindrically distribute and embrace the conductive terminal, which can provide uniform radial support force, the glue layer of the two materials has the characteristics of good resilience, and the self-correcting function of the terminal to the plug can be realized, and the influence caused by the copper bar pulling in the vibration process can be reduced; It also has good sealing performance, the sealing fit between the socket conductive terminal 1 and the socket shell 3 can be realized through the support constraint structure 2, when the sealing between the connector plug and the socket fails, rainwater can be prevented from penetrating to affect the normal operation of the system; It also has good wear resistance, which can ensure that the socket conductive terminal 1 and the socket shell 3 are not affected by friction when vibrating, avoid damage caused by copper bar pulling in vibration, affect the normal operation of the high-voltage connector, and also improve the service life of the high-voltage connector; It also has good insulation, which can ensure that the socket conductive terminal 1 and the socket shell 3 will not cause insulation failure and other safety problems due to the support constraint structure 2.

[0036] The assembly method of the high-voltage connector socket is as follows: first, the socket shell 3 is injection molded on a mold, the socket conductive terminal 1 is inserted from the bottom of the terminal mounting hole 12, the socket conductive terminal 1 is prevented from being disengaged with the elastic clamping jaw 5, and the bottom surface of the outer protruding ring is in contact with the top of the elastic clamping jaw 5. The glue layer is filled from the upper end of the gap between the surrounding wall 30 and the outer wall of the terminal mounting hole, and after the glue layer is solidified, the support constraint structure 2 between the socket conductive terminal 1 and the terminal mounting hole 12 is formed.

[0037] The specific implementation of the high-voltage connector of the power battery is as follows:

[0038] In a basic embodiment, the high-voltage connector of the power battery includes a high-voltage connector socket, and the specific implementation of the high-voltage connector socket is as described above, and will not be repeated.

[0039] The fuse inside the plug of the high-voltage connector of the power battery is replaced with a copper bar, which can improve the vibration resistance and current carrying capacity of the connector by reducing the weight of the high-voltage connector plug of the power battery without affecting the disconnection of the high-voltage circuit function of the connector itself.

[0040] The above is only a preferred embodiment of the utility model, and does not limit the utility model, the patent protection scope of the utility model is subject to the claims, and equivalent structural changes made by applying the contents of the specification and drawings of the utility model should also be included in the protection scope of the utility model.

Claims

1. A high voltage connector socket comprising a socket housing having a terminal mounting hole formed therein, a socket conductive terminal being fitted in the terminal mounting hole by elastic claws formed on the hole wall of the terminal mounting hole, the periphery of the terminal mounting hole having a surrounding wall, and the surrounding wall and the outer wall of the terminal mounting hole having a clearance space for allowing the elastic claws to be deformed radially outward, characterized in that, The avoiding space is provided with a support constraint structure for radially limiting the elastic clamping jaw and / or the socket conductive terminal.

2. The high voltage connector jack of claim 1, wherein, The support constraint structure is a glue layer filled into the avoiding space through the upper end opening between the surrounding wall and the terminal mounting hole to fit the elastic clamping jaw and the conductive terminal.

3. The high voltage connector jack of claim 2, wherein, The top surface of the glue layer is flush with the top surface of the conductive terminal.

4. The high voltage connector jack of claim 2 or 3, wherein, The glue layer is a fluororubber layer or a silicone rubber layer.

5. The high-voltage connector socket according to any one of claims 1-3, characterized in that The support constraint structure is an elastic support structure.

6. A high-voltage connector for a power battery, comprising a high-voltage connector socket, the high-voltage connector socket comprising a socket housing, a terminal mounting hole being provided in the socket housing, a socket conductive terminal being clamped in the terminal mounting hole through elastic clamping claws formed on the hole wall of the terminal mounting hole, the periphery of the terminal mounting hole having a surrounding wall, and the surrounding wall and the outer wall of the terminal mounting hole having a clearance space for allowing the elastic clamping claws to deform radially outward, characterized in that, The avoiding space is provided with a support constraint structure for radially limiting the elastic clamping jaw and / or the socket conductive terminal.

7. The power battery high-voltage connector according to claim 6, characterized in that, The support constraint structure is a glue layer filled into the avoiding space through the upper end opening between the surrounding wall and the terminal mounting hole to fit the elastic clamping jaw and the conductive terminal.

8. The power battery high-voltage connector according to claim 7, characterized in that, The top surface of the glue layer is flush with the top surface of the conductive terminal.

9. The power cell high voltage connector of claim 7 or 8, wherein, The glue layer is a fluororubber layer or a silicone rubber layer.

10. The power battery high-voltage connector according to any one of claims 6-8, characterized in that, The support constraint structure is an elastic support structure.

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