High-current-carrying contact pair module group with shunting function and connector applying high-current-carrying contact pair module group
By employing parallel shunting high-current-carrying contact pairs in the connector, the problems of excessive temperature rise and high cost in high-current-carrying scenarios are solved, achieving efficient current transmission and low-cost connector design.
Patent Information
- Application Number
- CN202520156720.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Existing connectors require higher current carrying capacity to meet the demand for faster charging, which leads to larger terminal size, increased cost, and difficulty in controlling the heat generated by high current carrying capacity, resulting in complex structure and high maintenance costs.
A high-current-carrying contact pair module with current shunting function is adopted. The external and internal pins form a parallel current-carrying path. The external and internal leads are connected in parallel with the socket and pin respectively to achieve current shunting between the two paths, while maintaining the original terminal size and meeting the requirements of higher current carrying capacity.
It achieves improved high current carrying capacity, avoids the problem of excessive temperature rise, simplifies the structure, reduces connector cost and maintenance difficulty, and maintains miniaturization and assembly efficiency.
Smart Images
Figure CN223858551U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of electrical connection, especially to high current contact pair module with shunt function and the connector using the same. BACKGROUND
[0002] With the rapid development of new energy industry, new energy equipment realizes the connection of whole vehicle and battery pack through the connector to charge or discharge, at present, the connector uses the contact pair assembly of single current loop to carry out electric energy transmission, and its defects are as follows: first, in order to meet the faster charging demand of customers, the connector needs higher current carrying requirement, and higher current carrying requirement needs to increase the size specification of terminal, which increases the overall size of the connector and improves the overall cost of the connector; second, single loop generates more heat through higher current, and the temperature rises too fast during use, at present, the liquid cooling module is set to maintain safe and stable transmission, which makes the structure complex, the assembly efficiency is low and the working hours are consumed, and more equipment maintenance cost is needed subsequently. UTILITY MODEL CONTENTS
[0003] In order to solve one or more of the above problems, the utility model provides high current contact pair module with shunt function and the connector using the same.
[0004] According to one aspect of the utility model, the high current contact pair module with shunt function comprises: jack, outer pin, inner pin, outer lead and inner lead, all of which are high conductivity;
[0005] The jack is provided with an outer jack hole with axial blind hole structure at one end, the inner end wall of the outer jack hole is provided with a threaded blind hole, and the hole wall is provided with a first positioning ring groove, the inner pin is located in the outer jack hole, and the distal end is threadedly connected with the threaded blind hole, and the outer lead is elastically expanded and tightly sleeved in the first positioning ring groove;
[0006] The outer pin is provided with an axial inner jack hole at one end, and the inner lead is elastically expanded and tightly sleeved in the second positioning ring groove of the inner jack hole hole wall;
[0007] When the outer pin is inserted into the outer jack hole and is sleeved by the outer lead to form an outer current carrying path, the inner pin is inserted into the inner jack hole and is sleeved by the inner lead to form an inner current carrying path, and the two current carrying paths are shunted in parallel, thereby improving the overall current carrying capacity of the contact pair.
[0008] The high-current contact pair module with a shunt function forms an outer current-carrying path through a jack, an outer pin and an outer lead, and the outer pin simultaneously serves as the jack, and forms an inner current-carrying path together with the inner pin and the outer lead. The outer current-carrying path and the inner current-carrying path are connected in parallel, and higher current is shunted into two paths for transmission, thereby improving the overall current-carrying capacity of the contact pair module, and avoiding the problem of rapid temperature rise of the contact pair high current. The beneficial effects are: first, the contact pair module is designed using the original terminal, the original terminal size is maintained unchanged, the overall size of the connector does not need to be changed, and the cost of the connector is effectively saved; second, the design meets the higher current capacity demand of customers through two parallel shunt circuits, effectively controls the temperature rise, and does not need to set up a liquid cooling module, so that the product has fewer parts and a simple overall structure, is easy to assemble, and has low subsequent maintenance cost.
[0009] In some embodiments, the cylindrical inner needle body end of the inner pin is formed into a threaded column, the inner needle body is inserted into the inner jack, and the threaded column is connected to the threaded blind hole.
[0010] In some embodiments, a large-diameter positioning end column is formed between the threaded column and the inner needle body, and the positioning end column is attached to the inner end wall of the outer jack.
[0011] In some embodiments, the inner needle body end is also provided with a conical locating end.
[0012] In some embodiments, the front end of the inner jack is provided with a large-diameter annular stepped groove, and the tensioning end of the elastic expansion sleeve is fixedly connected in the annular stepped groove and the inner hole of the sleeve is connected to the inner pin.
[0013] In some embodiments, the outer jack is a central axial circular blind hole at one end of the jack, and the inner jack is a central axial circular blind hole at one end of the outer pin.
[0014] In some embodiments, the outer lead and the inner lead are drum springs or spring sheets.
[0015] Or the jack, the outer pin and the inner pin are all made of T2Y red copper material.
[0016] Or the outer lead and the inner lead are both made of beryllium copper material.
[0017] In some embodiments, the other end of the jack forms a central threaded connection hole connected to an aluminum bar, and the other end of the outer pin is provided with a welding sheet connected to a power lead.
[0018] Or the outer jack is provided with a first radial through hole, and a first temperature sensor is sleeved in the first radial through hole and contacts the cylindrical outer needle body of the outer pin at the inner end.
[0019] The inner jack is provided with a second radial through hole, and a second temperature sensor is sleeved in the second radial through hole and contacts the cylindrical inner needle body of the inner pin at the inner end.
[0020] The utility model provides a kind of connector, comprising: the high current contact pair module with the shunt function of above-mentioned any one.It has beneficial effects: the connector can be applicable to high current scene, overall structure is simple, size is small, temperature rise is effectively controlled, assembly is fast and efficient, and production cost is low.
[0021] In some embodiments, the connector is a battery replacement connector. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is the three-dimensional schematic view of the high current contact pair module with the shunt function of an embodiment of the utility model;
[0023] Figure 2 It is Figure 1 It is the sectional view schematic view of the high current contact pair module with the shunt function shown in figure;
[0024] Figure 3 It is Figure 2 It is the three-dimensional schematic view of the inner plug pin shown in figure;
[0025] Figure 4 It is Figure 2 It is the three-dimensional schematic view of the jack piece shown in figure;
[0026] Figure 5 It is Figure 2 It is the three-dimensional schematic view of the outer plug pin shown in figure;
[0027] Jack 1, outer plug hole 10, threaded blind hole 11, first positioning ring groove 12, center threaded connection hole 13, first sealing ring groove 14, first radial through-hole 15;
[0028] Outer plug pin 2, outer needle body 20, inner plug hole 21, second positioning ring groove 22, annular stepped groove 23, welding sheet 24, second sealing ring groove 25, second radial through-hole 26;
[0029] Inner plug pin 3, inner needle body 30, threaded column 31, positioning end column 32, transition chamfer 33, conical locating end head 34;
[0030] Outer lead piece 4;Inner lead piece 5;Elastic expansion sleeve 6. DETAILED DESCRIPTION
[0031] The utility model will be further explained in detail in connection with the drawings.It needs to be explained that, the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the direction in the drawing, and the words "inner" and "outer" refer to the direction towards or away from the geometric center of a particular component.
[0032] Figures 1 to 5The high-current contact pair module with shunt function according to an embodiment of the utility model is shown schematically. As shown in the figure, the high-current contact pair module with shunt function comprises: jack 1, outer pin 2, inner pin 3, outer lead 4 and inner lead 5, all of which are of high conductivity;
[0033] One end of jack 1 is provided with an outer jack 10 of axial blind hole structure, the inner end wall of outer jack 10 is provided with a threaded blind hole 11, and the hole wall is provided with a first positioning ring groove 12; inner pin 3 is located in outer jack 10, and the distal end is threadedly connected to threaded blind hole 11. Preferably, the distal end of the cylindrical inner pin body 30 of inner pin 3 forms a threaded column 31, the inner pin body 30 is inserted into the inner jack 21 of equal diameter or small gap, and the threaded column 31 is threadedly connected to the threaded blind hole 11. The beneficial effect is that the setting facilitates assembly and connection fastening.
[0034] The outer lead 4 is elastically expanded and tightly sleeved in the first positioning ring groove 12; the outer lead 4 is preferably a drum spring or a spring leaf, and the beneficial effect is that the drum spring or spring leaf has higher connection effect and can efficiently transmit electric field energy.
[0035] One end of outer pin 2 is provided with an axial inner jack 21, and the inner lead 5 is elastically expanded and tightly sleeved in the second positioning ring groove 22 of the hole wall of inner jack 21; the inner lead 5 is preferably a drum spring or a spring leaf, and the beneficial effect is that the drum spring or spring leaf has higher connection effect and can efficiently transmit electric field energy.
[0036] When outer pin 2 is inserted into outer jack 10 and is sleeved by outer lead 4 to form an outer current-carrying path, inner pin 3 is inserted into inner jack 21 and is sleeved by inner lead 5 to form an inner current-carrying path, and the two current-carrying paths are shunted in parallel, thereby improving the overall current-carrying capacity of the contact pair.
[0037] The high-current contact pair module with shunt function forms an outer current-carrying path through jack 1, outer pin 2 and outer lead 4, and outer pin 2 simultaneously serves as a jack, and inner pin 3 and outer lead 4 form an inner current-carrying path. The outer current-carrying path and the inner current-carrying path are connected in parallel, the higher current is shunted into two paths for transmission, thereby improving the overall current-carrying capacity of the contact pair module, and avoiding the problem of rapid temperature rise of the contact pair high current. The beneficial effect is that: first, the contact pair module is designed using the original terminal, the original terminal size specification is maintained unchanged, the overall size specification of the connector does not need to be changed, and the connector cost is effectively saved; second, the design meets the higher current-carrying capacity demand of customers through two parallel shunt circuits, effectively controls the temperature rise, and does not need to set up a liquid cooling module, so that the product has fewer parts and a simple overall structure, is easy to assemble, and has low subsequent maintenance cost.
[0038] Further, a large-diameter positioning end column 32 is formed between the threaded column 31 and the inner needle body 30, and the positioning end column 32 is attached to the inner end wall of the outer insertion hole 10. The beneficial effect is that the setting can ensure good assembly positioning accuracy and ensure the quality stability of the product.
[0039] Preferably, a transition chamfer 33 is arranged at the connection between the inner needle body 30 and the positioning end column 32. The end of the inner needle body 30 is also provided with a conical locating end 34. The beneficial effect is that the setting facilitates the installation and introduction of the inner insertion needle 3, and the assembly is fast, accurate and efficient.
[0040] Further, the front end of the inner insertion hole 21 is also provided with a large-diameter annular stepped groove 23, and the tensioning end of the elastic expansion sleeve 6 is fixedly connected in the annular stepped groove 23 and the inner hole sleeve connects the inner insertion needle 3. The beneficial effect is that the setting can further improve the connection fastening.
[0041] Further, the outer insertion hole 10 is a one-end central axial circular blind hole of the insertion hole piece 1;
[0042] The inner insertion hole 21 is a one-end central axial circular blind hole of the outer insertion needle 2. The beneficial effect is that the central hole is convenient for processing and manufacturing, and facilitates assembly.
[0043] Preferably, the insertion hole piece 1, the outer insertion needle 2, and the inner insertion needle 3 are all made of T2Y red copper material. The beneficial effect is that the red copper material has the functions of high electrical conductivity, high temperature aging resistance, high thermal conductivity, and efficient transmission of electric field energy.
[0044] Preferably, the outer lead piece 4 and the inner lead piece 5 are both made of beryllium copper C17200 material. The beneficial effect is that the beryllium copper material has the functions of high elasticity, high strength, wear resistance, fatigue resistance, heat resistance, low stress decay, and efficient transmission of electric field energy.
[0045] Further, the other end of the insertion hole piece 1 forms a central threaded connection hole 13 for connecting an aluminum bar, and the other end of the outer insertion needle 2 is provided with a welding sheet 24 for connecting a power lead. The beneficial effect is that the setting can well transmit electric energy.
[0046] Further, the outer peripheral wall end of the insertion hole piece 1 forms a first sealing ring groove 14 for fixedly connecting a sealing ring, and the outer peripheral wall end of the outer insertion needle 2 forms a second sealing ring groove 25 for fixedly connecting a sealing ring. The beneficial effect is that the setting has good sealing, prevents impurities and water vapor from entering the conductive parts to reduce the conductivity efficiency and cause safety hazards.
[0047] Further, the outer insertion hole 10 is provided with a first radial through hole 15, and a first temperature sensor is sleeved in the first radial through hole 15 and contacts and connects the cylindrical outer needle body 20 of the outer insertion needle 2;
[0048] The end of the inner hole 21 is provided with a second radial through hole 26, and a second temperature sensor is sleeved in the second radial through hole 26, and the inner end of the second temperature sensor is in contact with the cylindrical inner needle body 30 of the inner needle 3.
[0049] A connector comprises the high-current contact pair module with the shunt function as described above. The connector is preferably a battery replacement connector. The connector can be applied to a high-current scene, has a simple overall structure, small size, effective temperature rise control, fast and efficient assembly, and low production cost.
[0050] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the inventive concept, a number of modifications and improvements can be made, which are all within the scope of protection of the present application.
Claims
1. A high current contact pair module with shunt function, characterized in that, It comprises: a jack piece (1), an outer pin (2), an inner pin (3), an outer lead piece (4) and an inner lead piece (5), all of which are high-conductivity. The jack piece (1) is provided with an outer jack (10) with an axial blind hole structure at one end, the inner end wall of the outer jack (10) is provided with a threaded blind hole (11), and the hole wall is provided with a first positioning ring groove (12), the inner pin (3) is located in the outer jack (10) and the threaded blind hole (11) is connected at the end, and the first positioning ring groove (12) is provided with an elastic expansion outer lead piece (4) in the form of interference fit. The outer pin (2) is provided with an axial inner jack (21) at one end, and the second positioning ring groove (22) of the hole wall of the inner jack (21) is provided with an elastic expansion inner lead piece (5) in the form of interference fit. When the outer pin (2) is inserted into the outer jack (10) and is sleeved by the outer lead piece (4) to form an outer current-carrying path, the inner pin (3) is inserted into the inner jack (21) and is sleeved by the inner lead piece (5) to form an inner current-carrying path, and the two current-carrying paths are connected in parallel to improve the overall current-carrying capacity of the contact pair.
2. The high current contact pair module with shunting function according to claim 1, characterized in that, The cylindrical inner pin body (30) of the inner pin (3) forms a threaded column (31) at the end, the inner pin body (30) is inserted into the inner jack (21) with the same diameter, and the threaded column (31) is connected to the threaded blind hole (11).
3. The high current contact pair module with shunting function according to claim 2, characterized in that, A large-diameter positioning end column (32) is formed between the threaded column (31) and the inner pin body (30), and the positioning end column (32) is attached to the inner end wall of the outer jack (10).
4. The high current contact pair module with shunting function according to claim 3, characterized in that, The end of the inner pin body (30) is also provided with a conical locating end (34).
5. The high current contact pair module with shunting function according to claim 1, characterized in that, The front end of the inner jack (21) is provided with a large-diameter annular stepped groove (23), and the tensioning end of the elastic expansion sleeve (6) is fixedly connected in the annular stepped groove (23) and the inner hole is sleeved with the inner pin (3).
6. The high current contact pair module with shunt function according to any one of claims 1 to 5, characterized in that, The outer jack (10) is a central axial circular blind hole at one end of the jack piece (1); the inner jack (21) is a central axial circular blind hole at one end of the outer pin (2).
7. The high current contact pair module with shunting function according to claim 1, characterized in that, The outer lead piece (4) and the inner lead piece (5) are drum springs or spring leaves; Or the jack piece (1), the outer pin (2) and the inner pin (3) are all made of T2Y red copper material; Or the outer lead piece (4) and the inner lead piece (5) are both made of beryllium copper material.
8. The high current contact pair module with shunting function according to claim 1, characterized in that, The other end of the jack piece (1) forms a central threaded connecting hole (13) connected with an aluminum bar, and the other end of the outer pin (2) is provided with a welding sheet (24) connected with a power lead; Or the outer jack (10) is provided with a first radial through hole (15) at the end, and a first temperature sensor is sleeved in the first radial through hole (15) and contacts the cylindrical outer pin body (20) of the outer pin (2) at the inner end; The inner jack (21) is provided with a second radial through hole (26) at the end, and a second temperature sensor is sleeved in the second radial through hole (26) and contacts the cylindrical inner pin body (30) of the inner pin (3) at the inner end.
9. A connector characterized by comprising: The high-current contact pair module with shunt function of any one of claims 1 to 8.
10. A connector according to claim 9, wherein The connector is a battery replacement connector.