Plug-in type connector and battery pack

Abstract

The invention belongs to the technical field of electric connectors, and particularly provides a plug-in type connector and a battery pack. The plug-in type connector comprises a plug and a socket, the plug comprises a plug main body, the socket comprises a socket main body, the plug main body is provided with a plug connecting part used for being fixedly connected with the socket main body, the socket main body is provided with a socket connecting part used for being matched with the plug connecting part, and the plug connecting part and the socket connecting part are connected through a bolt. And the plug connecting part and the socket connecting part are respectively provided with at least one bolt mounting hole. The battery pack comprises the plug-in type connector. According to the invention, the locking bolt passes through the bolt mounting holes of the plug connecting part and the socket connecting part to lock the plug and the socket, so that the connection stability of the plug and the socket is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical connectors, and in particular relates to a plug-in connector and a battery pack. Background Art

[0002] The electrical connectors used for the positive and negative electrode interfaces of the battery pack mainly include locking bolt connectors and plug-in connectors.

[0003] The locking bolt connector is a connector that uses bolts to press the contact terminals together to achieve contact and conduction. It has strong vibration resistance, good reliability, and a wide range of applications. However, the locking bolt connector does not have a finger-proof function. To ensure the safety of the operator, at least one of the high-voltage circuits in the positive and negative poles of the battery system needs to be disconnected before disassembling the locking bolt, and insulating tools need to be used for operation. Therefore, battery packs using locking bolt connectors also need to be used in conjunction with MSD (manual maintenance switch).

[0004] However, when an insulation failure occurs in the battery pack and the vehicle body is energized, there is still a risk of electric shock even if one pole of high voltage is disconnected. If MSD is installed at both the positive and negative poles, it will be difficult to control the volume of the battery pack, resulting in a battery pack that is too large.

[0005] The plug-in connector includes a plug and a socket that fit together. The elastic conductors of the plug and the socket are plugged together to achieve contact and conduction, which has a good finger-proof effect. Both the plug and the socket include an insulating handle. When a fault occurs, the plug and the socket can be directly separated to cut off the power and ensure the safety of the maintenance process.

[0006] However, the insulating handle of the plug-in connector is generally an injection molded part, which is prone to water loss and brittleness when used in a low-temperature environment, and is not reliable enough. Moreover, when used under conditions of strong vibration, it is also prone to poor contact problems. Summary of the invention

[0007] The object of the present invention is to provide a plug-in connector to solve the technical problem of poor stability of the plug-in connector in the prior art. The object of the present invention is also to provide a battery pack to solve the same technical problem as above.

[0008] To achieve the above object, the technical solution of the plug-in connector provided by the present invention is:

[0009] A plug-in connector comprises a plug and a socket, wherein the plug comprises a plug body, and the socket comprises a socket body, wherein the plug body is provided with a plug connecting portion for fixedly connecting with the socket body, and the socket body is provided with a socket connecting portion for cooperating with the plug connecting portion, the plug connecting portion and the socket connecting portion are connected by bolts, and each of the plug connecting portion and the socket connecting portion is provided with at least one bolt mounting hole.

[0010] The beneficial effect is that the present invention improves the plug-in connector in the prior art. When in use, the plug and the socket are plugged together, and the contact terminals of the plug and the socket are in contact to achieve electrical connection. Then, a locking bolt is passed through the plug connection part and the socket connection part to lock the plug and the socket. Compared with the prior art, this is equivalent to adding a locking structure, which significantly improves the connection stability of the plug and the socket.

[0011] As a further improvement, the plug-in connector also includes a positioning structure, which includes a plug positioning structure arranged on the plug body and a socket positioning structure arranged on the socket body, the plug positioning structure and the socket positioning structure are positioned and cooperated with each other, and the plug positioning structure and / or the socket positioning structure include an indicating structure for indicating the tightness of the connection between the plug connecting part and the socket connecting part.

[0012] The beneficial effect is that during the process of plugging in the plug, the indicator structure can be directly observed to judge whether the connection between the socket and the plug is tight, and whether the plug is installed in place can be accurately judged, which is equivalent to providing an installation reference standard for the staff to install and inspect. After the plug and the socket are installed and matched in place, the bolts are tightened, which further improves the reliability of the plug-in connector.

[0013] As a further improvement, the socket positioning structure includes a positioning protrusion, and the plug positioning structure includes a positioning hole, and the positioning protrusion is used to be inserted and positioned with the positioning hole.

[0014] The beneficial effect is that when the plug and the socket are connected, the positioning protrusion is inserted into the positioning hole of the plug, which plays a role of limiting and supporting the plug, thereby improving the installation efficiency. In addition, the positioning and matching of the positioning hole and the positioning protrusion also plays a role of preventing the positive and negative poles from being fooled.

[0015] As a further improvement, the upper protrusion height of the positioning protrusion is equal to the hole depth of the positioning hole used for matching therewith, and the indicating structure is formed by the upper surface of the positioning protrusion.

[0016] The beneficial effect is that after the plug is inserted into place, the positioning protrusion is flush with the plug connection part with the positioning hole, so that the upper surface of the positioning protrusion can be directly observed to determine whether the plug is inserted into place, and the positioning protrusion will not protrude as a whole after installation, which also has better aesthetics.

[0017] As a further improvement, the positioning protrusions include at least two and the two positioning protrusions are arranged at intervals.

[0018] The beneficial effect is that the positioning protrusion forms at least two-point support for the plug, which plays a role in stopping the plug from rotating relative to the socket when the bolt is screwed, and further improves the reliability of the connection between the plug and the socket.

[0019] As a further improvement, at least two of the positioning protrusions are respectively arranged on opposite sides of the plugging portion of the socket for plugging and mating with the plug.

[0020] The beneficial effect is that the two positioning protrusions cooperate with each other to prevent the plug from tipping over to one side, thereby further improving the reliability of the connection between the plug and the socket.

[0021] As a further improvement, at least one of the positioning protrusions and the bolt mounting hole located on the same side of the plug-in portion are at an equal distance from the plug-in portion.

[0022] The beneficial effect is that the bolt mounting hole and the positioning protrusion can be connected to form a straight line parallel to the plug-in portion, thereby ensuring the positioning effect. In addition, this also facilitates the processing of the positioning hole and the bolt mounting hole.

[0023] As a further improvement, at least one of the positioning protrusions is directly opposite to the bolt mounting hole located on the side opposite to the plug-in portion.

[0024] The beneficial effect is that at this time, the connection line between the positioning protrusion and the two bolt mounting holes forms a right triangle structure, which has good stability.

[0025] As a further improvement, a connecting boss is provided on the socket body, the connecting boss forms the socket connecting part, the bolt mounting hole provided on the connecting boss is a threaded hole, and the bolt mounting hole provided on the plug connecting part is a smooth hole for the bolt to pass through.

[0026] The beneficial effect is that it is convenient to process deeper threaded holes on the connecting bosses, thereby improving the stability of the bolt connection.

[0027] To achieve the above purpose, the technical solution of the battery pack provided by the present invention is:

[0028] A battery pack includes a positive electrode interface and a negative electrode interface, wherein the positive electrode interface and the negative electrode interface are provided with connectors, wherein at least one of the connectors of the positive electrode interface and the negative electrode interface is a plug-in connector, wherein the plug-in connector includes a plug and a socket, wherein the plug includes a plug body, and the socket includes a socket body, wherein the plug body is provided with a plug connecting portion for fixedly connecting with the socket body, and the socket body is provided with a socket connecting portion for cooperating with the plug connecting portion, wherein the plug connecting portion and the socket connecting portion are connected by bolts, and wherein at least one bolt mounting hole is provided on the plug connecting portion and the socket connecting portion respectively.

[0029] The beneficial effect is that the present invention improves the plug-in connector of the battery pack in the prior art. When in use, the plug and the socket are plugged together, and the contact terminals of the plug and the socket are in contact to achieve electrical connection. Then, a locking bolt is passed through the plug connection part and the socket connection part to lock the plug and the socket. Compared with the prior art, this is equivalent to adding a locking structure, which significantly improves the connection stability of the plug and the socket.

[0030] As a further improvement, the plug-in connector also includes a positioning structure, which includes a plug positioning structure arranged on the plug body and a socket positioning structure arranged on the socket body, the plug positioning structure and the socket positioning structure are positioned and cooperated with each other, and the plug positioning structure and / or the socket positioning structure include an indicating structure for indicating the tightness of the connection between the plug connecting part and the socket connecting part.

[0031] The beneficial effect is that during the process of plugging in the plug, the indicator structure can be directly observed to judge whether the connection between the socket and the plug is tight, and whether the plug is installed in place can be accurately judged, which is equivalent to providing an installation reference standard for the staff to install and inspect. After the plug and the socket are installed and matched in place, the bolts are tightened, which further improves the reliability of the plug-in connector.

[0032] As a further improvement, the socket positioning structure includes a positioning protrusion, and the plug positioning structure includes a positioning hole, and the positioning protrusion is used to be inserted and positioned with the positioning hole.

[0033] The beneficial effect is that when the plug and the socket are connected, the positioning protrusion is inserted into the positioning hole of the plug, which plays a role of limiting and supporting the plug, thereby improving the installation efficiency. In addition, the positioning and matching of the positioning hole and the positioning protrusion also plays a role of preventing the positive and negative poles from being fooled.

[0034] As a further improvement, the upper protrusion height of the positioning protrusion is equal to the hole depth of the positioning hole used for matching therewith, and the indicating structure is formed by the upper surface of the positioning protrusion.

[0035] The beneficial effect is that after the plug is inserted into place, the positioning protrusion is flush with the plug connection part with the positioning hole, so that the upper surface of the positioning protrusion can be directly observed to determine whether the plug is inserted into place, and the positioning protrusion will not protrude as a whole after installation, which also has better aesthetics.

[0036] As a further improvement, the positioning protrusions include at least two and the two positioning protrusions are arranged at intervals.

[0037] The beneficial effect is that the positioning protrusion forms at least two-point support for the plug, which plays a role in stopping the plug from rotating relative to the socket when the bolt is screwed, and further improves the reliability of the connection between the plug and the socket.

[0038] As a further improvement, at least two of the positioning protrusions are respectively arranged on opposite sides of the plugging portion of the socket for plugging and mating with the plug.

[0039] The beneficial effect is that the two positioning protrusions cooperate with each other to prevent the plug from tipping over to one side, thereby further improving the reliability of the connection between the plug and the socket.

[0040] As a further improvement, at least one of the positioning protrusions and the bolt mounting hole located on the same side of the plug-in portion are at an equal distance from the plug-in portion.

[0041] The beneficial effect is that the bolt mounting hole and the positioning protrusion can be connected to form a straight line parallel to the plug-in portion, thereby ensuring the positioning effect. In addition, this also facilitates the processing of the positioning hole and the bolt mounting hole.

[0042] As a further improvement, at least one of the positioning protrusions is directly opposite to the bolt mounting hole located on the side opposite to the plug-in portion.

[0043] The beneficial effect is that at this time, the connection line between the positioning protrusion and the two bolt mounting holes forms a right triangle structure, which has good stability.

[0044] As a further improvement, a connecting boss is provided on the socket body, the connecting boss forms the socket connecting part, the bolt mounting hole provided on the connecting boss is a threaded hole, and the bolt mounting hole provided on the plug connecting part is a smooth hole for the bolt to pass through.

[0045] The beneficial effect is that it is convenient to process deeper threaded holes on the connecting bosses, thereby improving the stability of the bolt connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a structural schematic diagram of a plug-in connector embodiment 1 of the present invention;

[0047] Figure 2 for Figure 1 A schematic diagram of the structure of the plug body;

[0048] Figure 3 for Figure 1 A schematic diagram of the structure of the socket body;

[0049] Figure 4 for Figure 1 A schematic diagram of the structure of the socket body from another perspective.

[0050] Description of reference numerals:

[0051] 1. Plug body; 2. Socket body; 3. Locking bolt; 101. Plug connection part; 102. Positioning hole; 201. Connecting boss; 202. Positioning protrusion; 203. Threaded hole; 204. Connecting part. DETAILED DESCRIPTION

[0052] The present invention is further described in detail below in conjunction with embodiments.

[0053] In order to solve the problem of insufficient connection stability between the plug and socket of a plug-in connector, the present invention improves the design of the plug-in connector, adds a matching connecting portion between the plug and the socket of the connector, and uses a locking bolt to fasten the plug and the socket, thereby improving the stability of the connection between the plug and the socket.

[0054] Specific embodiment 1 of the plug-in connector provided by the present invention:

[0055] The plug-in connector provided in this embodiment is as follows Figure 1 As shown, it includes a plug and a socket, the plug includes a plug body 1, the socket includes a socket body 2, the plug body 1 is provided with a plug connection part 101, and the plug connection part 101 in this embodiment is a wing plate provided on both sides of the plug body 1. The socket body 2 is provided with a socket connection part, and the socket connection part and the plug connection part 101 can be connected by a locking bolt 3. In order for the locking bolt 3 to pass through the plug connection part 101 and the socket connection part smoothly, the plug connection part 101 and the socket connection part should be respectively provided with at least one bolt mounting hole.

[0056] Specifically, in this embodiment, the bolt mounting hole provided in the plug connecting part 101 is a smooth hole, which is used for the locking bolt 3 to pass through, and the bolt mounting hole provided in the socket connecting part is a threaded hole 203. The locking bolt 3 passes through the smooth hole of the plug connecting part 101 and is threadedly connected to the threaded hole 203 of the socket connecting part, thereby pressing the plug tightly and connecting it. Compared with the prior art, this significantly improves the stability of the connection between the plug and the socket.

[0057] Of course, in order to achieve a stable and tight connection between the plug connection part 101 and the socket connection part, in other embodiments, the battery pack case, the plug connection part and the socket connection part can all be provided with a light hole for the bolt to pass through. After the bolt passes through the plug connection part and the socket connection part, a locking nut is used to press the plug connection part 101 and the socket connection part. The locking nut can be set inside or outside the case. However, the solution using the threaded hole 203 does not require processing a light hole in the battery pack case, and there are fewer sealing risk points.

[0058] In this embodiment, the socket body 2 is provided with a connection boss 201, the threaded hole 203 is provided on the connection boss 201, the plug connection part 101 is matched and connected with the connection boss 201, and the connection boss 201 forms the socket connection part, so as to process a deeper threaded hole 203 when the socket body 2 is light, and ensure the connection stability of the locking bolt 3. Of course, in other embodiments, the connection boss 201 may not be provided, and the plug connection part 101 is directly connected to the socket body 2.

[0059] In addition, in order to achieve a good locking effect, the number of the specific locking bolt / bright hole / threaded hole 203 should be at least one. Of course, in order to improve the locking effect, the number of the locking bolt / bright hole / threaded hole 203 can be more than two. In this embodiment, the number of the locking bolt / bright hole / threaded hole 203 is two, and they are designed in a diagonal line.

[0060] Considering that it is difficult for on-site staff to directly judge whether the plug is installed in place when installing the plug, if the plug insertion stroke is too large, the plug connection part and the socket connection part may be too tight, causing excessive compression and deformation of the contact terminal. If the plug is not inserted in place, the locking bolt is screwed. At this time, the plug may still move relative to the socket, causing compression and deformation of the contact terminal, resulting in poor contact. In order to solve this problem, in this embodiment, the plug-in connector also includes a positioning structure. The positioning structure includes a plug positioning structure provided on the plug and a socket positioning structure provided on the socket. A positioning indication structure can be set in one of the socket positioning structure and the plug positioning structure, or a positioning indication structure can be set in both the socket positioning structure and the plug positioning structure. When installing the plug, the positioning indication structure can be observed to accurately judge the tightness of the socket and the plug. When the plug is installed to a certain position, the plug positioning structure and the socket positioning structure are exactly matched, indicating that the plug has been installed in place. At this time, the locking bolt 3 is installed to ensure that the relative movement of the plug and the socket will not be caused when the locking bolt 3 is screwed.

[0061] In this embodiment, Figure 1-Figure 4 As shown, the plug positioning structure includes a positioning hole 102, and the socket positioning structure includes a positioning protrusion 202, and the positioning protrusion 202 and the positioning hole 102 are interlaced and matched. Further, the protrusion height of the positioning protrusion 202 is equal to the hole depth of the positioning hole 102. After the positioning protrusion 202 is inserted into the positioning hole 102, the upper surface of the positioning protrusion 202 is flush with the upper edge of the positioning hole 102, that is, the upper surface of the positioning protrusion 202 forms a positioning indication structure.

[0062] When installing the plug, the position of the plug can be limited by the cooperation of the positioning hole 102 and the positioning protrusion 202. The positioning protrusion 202 plays a role in supporting the plug. At the same time, it also ensures that the screw hole of the plug body and the threaded hole of the socket are aligned, which is convenient for directly screwing the locking bolt 3. During the installation of the plug, if the upper surface of the positioning protrusion 202 is flush with the positioning hole 102, it means that the plug has been installed in place. Moreover, after the installation is completed, the whole is still flush, the positioning protrusion 202 will not protrude from the plug connection part, and it also has a better aesthetics.

[0063] In addition, the positioning hole 102 and the positioning protrusion 202 cooperate together to prevent the positive and negative poles of the connector from being misaligned. The positioning protrusion 202 in the positive or negative connector corresponds to the positioning hole 102 to avoid incorrect installation of the connector.

[0064] Furthermore, the positioning protrusions 202 in this embodiment include two. The two positioning protrusions can play a role in supporting the plug synchronously, thus achieving a rotation-stopping effect on the plug. In this way, when the locking bolt 3 is screwed, even if the staff touches the plug, the position of the plug is still stable under the action of the positioning protrusions and will not deflect, which also plays a role in protecting the contact terminal.

[0065] Furthermore, in this embodiment, the two positioning protrusions 202 are respectively arranged on opposite sides of the plug-in portion 204 of the socket body 2, so that the connection line of the two positioning protrusions 202 can cross the plug, thereby preventing the plug from tipping over to one side.

[0066] It should be noted that in order to stop the plug from rotating and prevent the plug from tipping over to one side, the number of the positioning protrusions 202 may be greater than two.

[0067] In addition, in this embodiment, the distances from the positioning protrusion 202 and the threaded hole 203 to the plug-in portion 204 are equal, which is convenient for processing and has a good overall aesthetics. It is also convenient for the plug connector 101 to process the positioning hole 102. The positioning protrusion 202 and the threaded hole 203 are connected to form a straight line parallel to the plug-in portion 204, and the positioning effect is better at this time. Furthermore, the positioning protrusion 202 is also colinear with the threaded hole 203 on the opposite side, so that the positioning protrusion 202 and the two threaded holes 203 together form a stable triangular structure, which strengthens the limiting effect of the positioning protrusion 202 on the plug.

[0068] It should also be noted that when the number of the positioning protrusions 202 and the threaded holes 203 is greater than two, more than one positioning protrusion 202 may be colinear with the threaded holes 203 , or more than one positioning protrusion 202 may be colinear with two threaded holes 203 .

[0069] The specific embodiment 2 of the plug-in connector provided by the present invention is different from the embodiment 1 mainly in that: in the embodiment 1, the positioning structure includes a positioning hole provided on the plug body and a positioning protrusion provided on the socket body. In this embodiment, the socket positioning structure can be a positioning column provided on the socket body, and a scale is set on the positioning column. The plug positioning structure can be formed by a plug connection part, and the positioning column is located on one side of the socket connection part. When the locking bolt is screwed, the scale of the positioning column can be observed. When the position of the plug connection part is flush with a scale line (indicating structure) of the positioning scale, it means that the locking bolt is in place.

[0070] The specific embodiment 3 of the plug-in connector provided by the present invention is different from the embodiment 1 mainly in that: in the embodiment 1, the indication structure is formed by the upper surface of the positioning protrusion. In this embodiment, the socket connection part can be provided with a mounting groove, and the plug connection part is installed in the mounting groove as a whole. The groove depth of the mounting groove is consistent with the thickness of the plug connection part. After the installation is completed, the plug connection part and the socket connection part are flush as a whole. At this time, the indication structure includes the upper surface of the plug connection part and the socket connection part.

[0071] The specific embodiment 4 of the plug-in connector provided by the present invention is mainly different from the embodiment 1 in that: in the embodiment 1, the protrusion height of the positioning protrusion is consistent with the hole depth of the positioning hole. In this embodiment, the height of the positioning protrusion can be greater than or less than the hole depth. When it is greater than the hole depth, a scale line can be set on the outer surface of the positioning protrusion, and when the upper edge of the positioning hole is flush with the scale line on the outer surface of the positioning protrusion, it indicates that the locking bolt has been rotated into place. When it is less than the hole depth, a scale line can be set on the positioning hole, and when the upper surface of the positioning protrusion is flush with the scale line, it indicates that the locking bolt has been rotated into place.

[0072] The specific embodiment 5 of the plug-in connector provided by the present invention is different from the embodiment 1 mainly in that: in the embodiment 1, the heights of the two positioning protrusions are flush. In this embodiment, the heights of different positioning protrusions may be inconsistent, and in order to play the role of anti-rotation support, two positioning protrusions are sufficient to play the role of support.

[0073] The specific embodiment 6 of the plug-in connector provided by the present invention is different from the embodiment 1 mainly in that: in the embodiment 1, the positioning protrusion is collinear with the threaded hole. In this embodiment, the positioning protrusion may not be collinear with the threaded hole, and the same positioning function can be achieved.

[0074] Embodiment of the battery pack of the present invention:

[0075] The battery pack includes a positive electrode interface and a negative electrode interface, both of which are provided with connectors, and at least one connector is a plug-in connector described in any one of embodiments 1 to 6 of the above-mentioned plug-in connector, which will not be described in detail here.

[0076] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A plug-in connector, comprising a plug and a socket, wherein the plug comprises a plug body and the socket comprises a socket body, wherein: The plug body is provided with a plug connecting part for fixedly connecting with the socket body, and the socket body is provided with a socket connecting part for cooperating with the plug connecting part. The plug connecting part and the socket connecting part are connected by bolts, and at least one bolt mounting hole is respectively provided on the plug connecting part and the socket connecting part.

2. The plug-in connector according to claim 1, characterized in that The plug-in connector also includes a positioning structure, which includes a plug positioning structure arranged on the plug body and a socket positioning structure arranged on the socket body. The plug positioning structure and the socket positioning structure are positioned and matched with each other. The plug positioning structure and / or the socket positioning structure include an indicating structure for indicating the tightness of the connection between the plug connecting part and the socket connecting part.

3. The plug-in connector according to claim 2, characterized in that The socket positioning structure includes a positioning protrusion, and the plug positioning structure includes a positioning hole. The positioning protrusion is used to be inserted and positioned with the positioning hole.

4. The plug-in connector according to claim 3, characterized in that The upper protrusion height of the positioning protrusion is equal to the hole depth of the positioning hole used for matching therewith, and the indicating structure is formed by the upper surface of the positioning protrusion.

5. The plug-in connector according to claim 3 or 4, characterized in that: The positioning protrusions include at least two, and the two positioning protrusions are arranged at intervals.

6. The plug-in connector according to claim 5, characterized in that At least two positioning protrusions are respectively arranged on opposite sides of the plugging portion of the socket for plugging and mating with the plug.

7. The plug-in connector according to claim 3 or 4, characterized in that: The distance from at least one of the positioning protrusions to the plug-in portion is equal to the distance from the bolt mounting hole located on the same side of the plug-in portion as the positioning protrusion.

8. The plug-in connector according to claim 3 or 4, characterized in that: At least one of the positioning protrusions is directly opposite to the bolt mounting hole located on the side opposite to the plug-in portion.

9. The plug-in connector according to any one of claims 1 to 4, characterized in that: The socket body is provided with a connecting boss, the connecting boss forms the socket connecting part, the bolt mounting hole provided on the connecting boss is a threaded hole, and the bolt mounting hole provided on the plug connecting part is a smooth hole for the bolt to pass through.

10. A battery pack, comprising a positive electrode interface and a negative electrode interface, wherein the positive electrode interface and the negative electrode interface are provided with connectors, characterized in that: At least one of the connectors of the positive electrode interface and the negative electrode interface is a plug-in connector as claimed in any one of claims 1 to 9.

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