CN107039808A - Contact temperature rise control method, contact metal liquid cooling appts and connector - Google Patents

Abstract

The invention relates to a contact temperature rise control method, a contact metal liquid cooler and a connector in the field of connectors; a metal liquid cooler is arranged on the outer surface of the contact, and a flowing insulating cooling medium, and rely on the heat exchange between the insulating cooling medium and the contact to control the temperature rise of the contact; the cooling medium uses an insulating medium, and the liquid cooler is made of a metal material with better thermal conductivity. Compared with the existing technology, the contact The temperature on the parts can be conducted in time, and the temperature control efficiency of the contact parts is higher.

Description

Contact temperature rise control method, contact metal liquid cooler and connector

technical field

The invention relates to a contact piece temperature rise control method, a contact piece metal liquid cooler and a connector in the field of connectors.

Background technique

The connector needs to pass a large current when it works, and the number of contacts on the connector is small, but due to the large current, the temperature of the contacts is high when the connector is working; especially when the contacts have been plugged and unplugged for a certain number of times After that, due to the wear of the contact piece, the contact resistance of the contact piece will increase, so that the temperature rise of the contact piece will increase, and finally lead to the ablation of the contact piece. The commonly used contact temperature rise control method is to add a temperature sensor to the contact, and increase the control system to control the current of the contact, and reduce the temperature rise of the contact by controlling the magnitude of the current. When the temperature rise of the contact increases It will automatically control the current value of the contact piece, thereby reducing the temperature rise of the contact piece, but this method reduces the transmission current value, and will stop the power supply after the product temperature rises to a certain level, which will easily affect the working efficiency of the equipment. . In the current research, the contact is cooled by water cooling on the connector. Since the contact is a conductive part and the working current of the contact is relatively large, the existing water cooler is an insulating material, and the cooling water flows in the water cooler. , to achieve cooling of the contacts. However, it was found during the experiment that the thermal conductivity of the insulating liquid cooler is low, the heat on the contact parts cannot be transferred to the cooling water in time, and the temperature of the contact parts cannot be well controlled.

Contents of the invention

The purpose of the present invention is to provide a contact temperature rise control method to solve the problem of low adjustment efficiency of the existing contact temperature rise control method; the purpose of the present invention is also to provide a contact metal liquid cooler and Connector.

In order to achieve the above object, the technical scheme of the method for controlling the temperature rise of the contact piece of the present invention is: a metal liquid cooler is arranged on the outer surface of the contact piece, and a flowing insulating cooling medium is passed into the metal liquid cooler, and the insulation The heat exchange between the cooling medium and the contacts controls the temperature rise of the contacts.

The technical scheme of the contact piece metal liquid cooler of the present invention is: the contact piece metal connector is provided with a liquid flow channel for the insulating cooling medium to pass through, and the liquid flow channel has a cooling liquid inlet and a cooling liquid outlet; A contact connection structure for connecting with the outer surface of the contact to realize heat exchange between the contact and the insulating cooling medium is also provided.

The connection structure of the contact piece is a connection sleeve, and the metal liquid cooler of the contact piece is sleeved on the periphery of the contact piece through the connection sleeve.

The contact metal liquid cooler includes a heat conduction ring. The radius section of the heat conduction ring is U-shaped. The U-shaped notch faces the axial direction of the heat conduction ring. The cavity forms the liquid flow channel; the radially inner wall of the heat conduction ring encloses the connecting sleeve, and the cover plate is provided with an avoidance hole for avoiding the central hole of the connecting sleeve.

The contact metal liquid cooler is made of metal alloy.

The insulating cooling medium is silicone oil.

The technical scheme of the connector of the present invention is: the connector includes the contact piece on the connector, and also includes a contact piece metal liquid cooler connected to the outer surface of the contact piece. The liquid flow channel has a cooling liquid inlet and a cooling liquid outlet.

The connection structure of the contact piece is a connection sleeve, and the metal liquid cooler of the contact piece is sleeved on the periphery of the contact piece through the connection sleeve.

The contact metal liquid cooler includes a heat conduction ring. The radius section of the heat conduction ring is U-shaped. The U-shaped notch faces the axial direction of the heat conduction ring. The cavity forms the liquid flow channel; the radially inner wall of the heat conduction ring encloses the connecting sleeve, and the cover plate is provided with an avoidance hole for avoiding the central hole of the connecting sleeve.

The contact metal liquid cooler is made of copper alloy.

The beneficial effect of the present invention is: a liquid cooler made of heat-conducting metal material is sheathed on the periphery of the contact piece, and an insulating cooling medium is passed into the liquid cooler during use, and the temperature is controlled by the heat exchange between the insulating cooling medium and the contact piece. The temperature rise of the contact piece; the cooling medium adopts the insulating medium, and the liquid cooler is made of a metal material with better thermal conductivity. Compared with the existing technology, the temperature on the contact piece can be conducted in time, and the temperature control efficiency of the contact piece is improved. higher.

Description of drawings

Fig. 1 is a schematic structural view of the contact metal liquid cooler of the present invention in use;

Fig. 2 is a schematic structural view of the contact element metal liquid cooler in Fig. 1;

FIG. 3 is a cross-sectional view of FIG. 2 .

detailed description

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

The specific embodiment of the contact piece metal liquid cooler of the present invention, as shown in Figure 1 to Figure 3, includes a heat conduction ring 21, the axis of the heat conduction ring 21 extends along the left and right directions; the radius section of the heat conduction ring 21 is U-shaped, and the U-shaped structure The notch of the heat conduction ring 21 is axially directed; the axial end of the heat conduction ring 21 with an opening is butted with a cover plate 22; the radial inner wall of the heat conduction ring 21 encloses a connecting sleeve 221, and the cover plate 21 is provided with a connecting sleeve for avoiding Avoidance hole of 221 center hole

The outer edge of the heat conduction ring 21 is oval, and the outer edge of the cover plate 22 is consistent with the heat conduction ring 21; the heat conduction ring 21 and the cover plate 22 are made of metal materials, and the heat conduction metal in this embodiment is a copper alloy. The cover plate 22 is welded and fixedly connected to the heat conducting ring 21 . The annular cavity of the heat conduction ring 21 forms an annular closed liquid flow channel 211 for passing the insulating cooling medium under the sealing of the cover plate 22 .

A cooling liquid inlet 23a and a cooling liquid outlet 23b are respectively provided on the cover plate 22 at two positions close to the two ends of the elliptical structure of the cover plate 22 in the long axis direction, and the cooling liquid inlet 23a and the cooling liquid outlet 23b communicate with the liquid flow channel 211 respectively.

The coolant inlet 23a and the coolant outlet 23b are respectively connected with a plastic adapter 24a and an adapter 24b through a threaded structure. The other end of the adapter 24a is welded with a liquid inlet pipe 25a, and the other end of the adapter 24b is welded with a liquid outlet. The pipe 25b, the liquid inlet pipe 25a and the liquid outlet pipe 25b are arranged in parallel; the connection between each adapter and the corresponding pipe is wrapped with an adhesive tape 26 .

When in use, the heat conduction ring 21 is set on the contact piece 1. Considering that the heat generated by the butt joint of the contact piece 1 is relatively large when the connector is in operation, it is preferable to set the heat conduction ring 21 on the outside of the contact part 1 insertion part.

Interference fit or clearance fit can be adopted between the connection sleeve 221 and the contact piece 1; when the interference fit is adopted, the heat conducting ring 21 is fixed by the interference force; when the clearance fit is adopted, before the connection sleeve 221 is installed, the contact Heat conduction glue needs to be applied on the outer wall of part 1 to cooperate with the connecting sleeve 221, and then the heat conduction ring 21 is put on. After the heat conduction glue is solidified, the heat conduction ring 21 is fixed.

The insulating cooling medium in this embodiment is silicone oil. After the heat conduction ring 21 is installed, the liquid inlet pipe 25a and the liquid outlet pipe 25b are respectively connected to the outlet and the inlet of the circulating water device. Let me repeat.

As shown in Figure 3, after the silicone oil enters the liquid flow channel 211 through the cooling liquid inlet 23a, under the split flow of the connecting sleeve 221, the silicone oil flows in two directions along the side wall of the connecting sleeve 221 to the cooling liquid outlet 23b; the heat on the contact piece 1 The conduction via the heat conduction ring 21 is carried away by the silicone oil, and the temperature of the contact piece 1 decreases.

During use, according to the temperature of the contact piece 1 detected by the temperature sensor on the connector, the cooling effect of the liquid cooler can be adjusted by adjusting the flow rate of the silicone oil.

In other embodiments, the heat-conducting metal can also be aluminum alloy; the insulating cooling medium can also be other electrical insulating oils, and there are many types of insulating oils, which will not be repeated here.

In other embodiments, a refrigerator for cooling the silicone oil can be installed on the silicone oil circulation circuit. The refrigerator is an existing technology. By adjusting the temperature before the silicone oil enters the liquid flow channel, the cooling effect of the liquid cooling device can be adjusted. .

In other embodiments, according to the number of contacts on the connector, the number of connection sleeves consistent with the number of contacts can be provided on the heat conduction ring, and the arrangement form of each connection sleeve is the same as that of the connection sleeves in the above-mentioned specific embodiments. .

In other embodiments, the cooling liquid inlet and the cooling liquid outlet can also be arranged on the heat conducting ring.

The specific embodiment of the contact temperature rise control method of the present invention, the implementation of the contact temperature rise control method is the same as that of any embodiment of the contact metal liquid cooler of the present invention, and will not be repeated.

In a specific embodiment of the connector of the present invention, the connector includes a contact piece, and a contact metal liquid cooler is sleeved on the contact piece. In this embodiment, other components of the connector except the contact piece metal liquid cooler are all As the prior art, the structure of the liquid cooler in this embodiment is the same as that of any embodiment of the contact element metal liquid cooler of the present invention described above, and will not be described again.

Claims (10)

1. contact temperature rise control method, it is characterised in that：Metal liquid cooling appts are set on the outer surface of contact, by gold The insulation cooling medium of flowing is passed through in category liquid cooling appts, and controls to contact with the heat exchange between contact by insulation cooling medium The temperature rise of part.

2. contact metal liquid cooling appts, it is characterised in that：Contact metal connector is provided with what is passed through for insulation cooling medium Fluid course, fluid course has cooling liquid inlet and cooling liquid outlet；It is additionally provided with contact metal connector for connecing The connection of contact element outer surface is with the contact attachment structure for the heat exchange for realizing contact between the cooling medium that insulate.

3. contact metal liquid cooling appts according to claim 2, it is characterised in that：Described contact attachment structure is company Female connector, contact metal liquid cooling appts are set in contact periphery by adapter sleeve.

4. contact metal liquid cooling appts according to claim 3, it is characterised in that：Contact metal liquid cooling appts include heat conduction Ring, the radius section of heat conduction ring is U-shaped, and U-shaped recess is docked towards heat conduction ring axial direction, jagged one end of band of heat conduction ring axial direction There is cover plate, the U-shaped chamber of heat conduction ring forms described fluid course；Heat conduction ring inner radial wall is surrounded on described adapter sleeve, cover plate Provided with the avoidance hole for avoiding adapter sleeve centre bore.

5. the contact metal liquid cooling appts according to Claims 2 or 3 or 4, it is characterised in that：Described contact molten metal Cooler is made up of copper alloy.

6. the contact metal liquid cooling appts according to Claims 2 or 3 or 4, it is characterised in that：Described insulation cooling medium For silicone oil.

7. the contact on connector, including connector, it is characterised in that：Also include the contact being connected with contact outer surface Metal liquid cooling appts, contact metal liquid cooling appts are provided with the fluid course passed through for insulation cooling medium, and fluid course has cold But liquid import and cooling liquid outlet.

8. connector according to claim 7, it is characterised in that：Described contact attachment structure is adapter sleeve, contact Part metal liquid cooling appts are set in contact periphery by adapter sleeve.

9. connector according to claim 8, it is characterised in that：Contact metal liquid cooling appts include heat conduction ring, heat conduction ring Radius section be U-shaped, U-shaped recess towards heat conduction ring axial direction, heat conduction ring axial direction the jagged one end of band to being connected to cover plate, lead The U-shaped chamber of hot ring forms described fluid course；Heat conduction ring inner radial wall surrounds described adapter sleeve, and cover plate, which is provided with, to be used to keep away Allow the avoidance hole of adapter sleeve centre bore.

10. the connector according to claim 7 or 8 or 9, it is characterised in that：Described contact metal liquid cooling appts are by gold Category alloy is made.