Connector and unmanned aerial vehicle

Abstract

The invention discloses a connector and an unmanned aerial vehicle, and the connector comprises a housing which is provided with a mounting cavity; the plurality of contact pieces are arranged in the mounting cavity; the heat dissipation sleeve is mounted in the mounting cavity, and the heat dissipation sleeve is provided with a heat dissipation cavity; at least part of the contact pieces are installed in the heat dissipation cavity, and the contact pieces arranged in the heat dissipation cavity make contact with the wall face of the heat dissipation cavity so that heat exchange can be conducted between the contact pieces and the heat dissipation sleeve. The contact piece is arranged in the heat dissipation sleeve and is in direct contact with the heat dissipation sleeve, and heat generated by the contact piece can be quickly conducted to the heat dissipation sleeve and dissipated outwards during working, so that the effect of effectively accelerating the heat dissipation efficiency of the contact piece is achieved, the use temperature of the connector is effectively reduced, and the risk that the service life of the connector is shortened due to the over-high temperature is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electrical connectors, and in particular to a connector and a drone. Background Art

[0002] In many electrical devices, connectors are used to connect two or more devices to achieve the transmission of electrical energy and signals. For example, existing drones, vehicles and other equipment are equipped with independent batteries, and connectors are needed to connect the batteries to the electronic control board. The batteries of some of the devices are generally set to be detachable and one device is equipped with multiple sets of replaceable batteries, which is convenient for users to remove and charge the exhausted batteries and install the fully charged batteries to achieve continuous operation of the equipment. For example, in existing drones, in order to avoid the battery being too heavy and affecting the weight of the drone, the battery capacity can usually only be controlled within a small range, and low-capacity batteries mean short battery life, so existing drones usually use battery rotation to achieve continuous operation. Therefore, the battery connector of the current drone has the characteristics of many plug-in and unplug times. After a certain period of use, it is easy to increase the contact resistance of the connector due to the high number of plug-in and unplug times. In addition, the vibration during the operation of the drone causes the actual contact resistance to be larger than when it is stationary. Combined with the influence of the large overcurrent of the battery connector itself, it is easy to cause the connector to be too hot when in use, thereby shortening the service life. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a connector and a drone, which can solve the above-mentioned problems existing in the prior art.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] In one aspect, a connector is provided, comprising:

[0006] A housing having a mounting cavity;

[0007] A plurality of contact pieces are arranged inside the installation cavity;

[0008] A heat dissipation sleeve is installed in the installation cavity, and the heat dissipation sleeve has a heat dissipation cavity;

[0009] At least part of the contact pieces are installed in the heat dissipation cavity, and the contact pieces arranged inside the heat dissipation cavity are in contact with the wall surface of the heat dissipation cavity to perform heat exchange with the heat dissipation sleeve.

[0010] Optionally, the heat dissipation sleeve includes an outer frame and a partition disposed in the outer frame, the partition divides the inner space of the outer frame into more than two heat dissipation cavities, and the contact pieces are dispersedly installed in each of the heat dissipation cavities.

[0011] Optionally, the partition divides the internal space of the outer frame into the heat dissipation cavities whose number corresponds to the number of the contact pieces, and each of the contact pieces is installed in a corresponding heat dissipation cavity.

[0012] Optionally, the heat dissipation cavity is a through cavity that passes through the heat dissipation sleeve along the plugging and unplugging direction.

[0013] Optionally, the contact piece includes a connected supporting foot and a contact piece, the supporting foot is clamped and fixed to the heat dissipation sleeve, and the contact piece is used to make contact with other connectors that are plugged into each other.

[0014] Optionally, the supporting foot is provided with an elastic clamping portion, and the heat dissipation sleeve is provided with a first positioning groove located on the side wall of the heat dissipation cavity, and at least part of the elastic clamping portion extends into the first positioning groove, so that the contact piece is fixedly clamped with the heat dissipation cavity.

[0015] Optionally, a tail limit block is protruding from the side of the support foot away from the contact piece, and the tail limit block abuts against the end of the heat sink sleeve away from the contact piece. The tail limit block cooperates with the elastic clip part to limit the movement of the contact piece relative to the heat sink sleeve along the plug-in and pull-out direction.

[0016] Optionally, an avoidance groove is provided at one end of the heat dissipation sleeve away from the contact sheet, and the tail limit block is inserted into the avoidance groove, so that the end surface of the support foot away from the contact sheet is basically flush with the end surface of the heat dissipation sleeve.

[0017] Optionally, the side of the support foot is provided with a limiting protrusion protruding relative to the side wall of the contact piece, and the heat dissipation sleeve is provided with a first limiting groove located on the inner wall of the heat dissipation cavity and extending along the plug-in direction, and the contact piece is limited from moving relative to the heat dissipation sleeve in a direction perpendicular to the plug-in direction through the cooperation between the first limiting groove and the limiting protrusion.

[0018] Optionally, the limiting protrusions are provided on two opposite sides of the supporting foot.

[0019] Optionally, each of the contact sheets includes two symmetrically arranged sub-sheets, the two sub-sheets are both provided with the elastic clamping portion, and the bending directions of the elastic clamping portions provided on the two sub-sheets are opposite; and / or,

[0020] The elastic clamping portion is arranged on the side of the supporting leg, a gap is formed between the elastic clamping portion and the supporting leg, and the elastic clamping portion is extended toward the end of the supporting leg.

[0021] Optionally, the installation cavity includes a first installation cavity, and the heat dissipation sleeve can be inserted into the first installation cavity along the plug-in direction; the shell is provided with a stop-slip protrusion located on the inner wall of the first installation cavity, and the heat dissipation sleeve is provided with a second positioning groove located on the side wall of the heat dissipation cavity, and at least part of the stop-slip protrusion extends into the second positioning groove to limit the movement of the heat dissipation sleeve relative to the shell along the plug-in direction; or,

[0022] The mounting cavity includes a first mounting cavity; the shell is provided with a locking protrusion located on the inner wall of the first mounting cavity, the heat dissipation sleeve is provided with a positioning opening located on the side wall of the heat dissipation cavity, at least part of the locking protrusion extends into the positioning opening to limit the movement of the heat dissipation sleeve relative to the shell along the plug-in and pull-out direction; the contact piece is provided with an elastic clamping portion, at least part of the elastic clamping portion extends into the positioning opening to fix the contact piece and the heat dissipation cavity.

[0023] Optionally, a guiding slope is formed on one side of the anti-slip protrusion facing the installation direction of the heat dissipation sleeve.

[0024] Optionally, the housing is provided with a plurality of limiting ribs arranged at intervals in the circumferential direction around the inner wall of the first installation cavity, the limiting ribs extend along the plugging and unplugging direction, and the outer periphery of the heat dissipation sleeve abuts against each of the limiting ribs respectively.

[0025] Optionally, the contact piece includes a connected support foot and a contact piece, the support foot is provided with an elastic clamping portion, the mounting cavity further includes a second mounting cavity, part of the contact piece is arranged in the second mounting cavity, the housing is provided with a third positioning groove located on the side wall of the second mounting cavity, and the elastic clamping portion of the contact piece arranged in the second mounting cavity is clamped into the third positioning groove;

[0026] A tail limit block is protruding from one side of the contact piece, the tail limit block abuts against the end of the shell, and the tail limit block cooperates with the elastic clamping portion to limit the movement of the contact piece relative to the heat dissipation sleeve along the plug-in and pull-out direction.

[0027] Optionally, the inner wall of the second mounting cavity is provided with a second limiting groove extending along the plugging and unplugging direction, and part of the supporting foot is located in the second limiting groove, so that the contact piece is limited to move relative to the second mounting cavity in a direction perpendicular to the plugging and unplugging direction by the second limiting groove.

[0028] Optionally, it further includes a conductive sheet, which is arranged at one end of the heat dissipation sleeve close to the supporting foot, and the contact sheet and the heat dissipation sleeve are fixedly connected to the conductive sheet; or,

[0029] It also includes a circuit board, which is arranged at one end of the heat dissipation sleeve close to the supporting foot, and the contact sheet and the heat dissipation sleeve are fixedly connected to the conductive sheet.

[0030] Optionally, the heat dissipation sleeve is made of copper, copper alloy, aluminum or aluminum alloy.

[0031] Optionally, the installation cavity includes a first installation cavity and a second installation cavity, the first installation cavity includes a positive electrode installation cavity and a negative electrode installation cavity, and the second installation cavity includes a signal electrode installation cavity;

[0032] The heat dissipation sleeve includes a positive heat dissipation sleeve and a negative heat dissipation sleeve, the contact piece includes a positive contact piece and a negative contact piece, the positive heat dissipation sleeve is installed in the positive installation cavity, and the positive contact piece is installed in the positive heat dissipation sleeve; the negative heat dissipation sleeve is installed in the negative installation cavity, and the negative contact piece is installed in the negative heat dissipation sleeve;

[0033] The contact piece includes a signal contact piece, and the signal contact piece is installed in the signal electrode installation cavity; the signal electrode installation cavity is located between the positive electrode installation cavity and the negative electrode installation cavity.

[0034] Optionally, the installation cavity comprises a plurality of cavities, and a spacing cavity is provided between two adjacent installation cavities, and the spacing cavity is a through cavity along the plug-in direction.

[0035] Optionally, the connector is a female connector, the contact is a female contact of the female connector, which is used to be plugged with a male contact of a male connector, and the female contact is completely installed in the installation cavity.

[0036] Optionally, the connector is a male connector, and the contact is a male contact of the male connector, which is used to be plugged into a female contact of a female connector; the male contact is partially fixed in the installation cavity and partially extends out of the installation cavity.

[0037] On the other hand, a drone is provided, comprising a power module, wherein the power module comprises the above-mentioned connector.

[0038] The beneficial effects of the present application are as follows: the present invention provides a connector and a UAV, in which a heat dissipation sleeve is arranged between the insulating shell and the contact piece in the connector structure, and the contact piece is installed in the heat dissipation sleeve and in direct contact with the heat dissipation sleeve. When working, the heat generated by the contact piece can be quickly transmitted to the heat dissipation sleeve and dissipated outward, thereby achieving the effect of effectively accelerating the heat dissipation efficiency of the contact piece, effectively reducing the operating temperature of the connector, and reducing the risk of shortening the service life of the connector due to excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present application is further described in detail below based on the drawings and embodiments.

[0040] Figure 1 This is a structural schematic diagram of a connector from one perspective according to an embodiment of the present application;

[0041] Figure 2 for Figure 1 An exploded schematic diagram of the structure shown;

[0042] Figure 3 This is a schematic structural diagram of the connector according to the embodiment of the present application from another perspective;

[0043] Figure 4 for Figure 3 An exploded schematic diagram of the structure shown;

[0044] Figure 5 A schematic structural diagram of the heat dissipation sleeve and the contact piece combination according to an embodiment of the present application from a perspective;

[0045] Figure 6 A schematic structural diagram of the heat dissipation sleeve and the contact sheet combination according to an embodiment of the present application from another perspective;

[0046] Figure 7 for Figure 6 a cross-sectional view of the structure shown;

[0047] Figure 8 for Figure 6 An exploded schematic diagram of the structure shown;

[0048] Fig. 9 This is a schematic diagram of the structure of the heat dissipation sleeve described in an embodiment of the present application;

[0049] Fig.10 This is a schematic diagram of the structure of the contact sheet described in the embodiment of the present application;

[0050] Fig.11 This is a schematic diagram of the structure of the connector in use according to an embodiment of the present application.

[0051] In the figure:

[0052] 1. Shell; 11. Installation cavity; 11a. Positive electrode installation cavity; 11b. Negative electrode installation cavity; 11c. Signal electrode installation cavity; 12. Grid bar; 13. Anti-slip protrusion; 14. Limiting rib; 15. Positioning fool-proof hole; 16. Second limiting slide groove; 17. Third positioning groove; 18. Spacer cavity; 2. Contact piece; 2a. Positive electrode contact piece; 2b. Negative electrode contact piece; 2c. Signal contact piece; 21. Contact piece; 22. Support foot; 221. Elastic clamping part; 222. Tail limiting block; 223. Limiting protrusion; 3. Heat dissipation sleeve; 3a. Positive electrode heat dissipation sleeve; 3b. Negative electrode heat dissipation sleeve; 31. Heat dissipation cavity; 32. Outer frame; 33. Partition plate; 34. First positioning groove; 35. First limiting slide groove; 36. Avoiding groove; 37. Second positioning groove; 10. Female seat; 40. Male seat; 41. Anti-fool-proofing protrusion. DETAILED DESCRIPTION

[0053] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0054] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] In many electrical devices, connectors are used to connect two or more devices to achieve the transmission of electrical energy and signals. For example, existing drones, vehicles and other equipment are equipped with independent batteries, and connectors are needed to connect the batteries to the electronic control board. The batteries of some of the devices are generally set to be detachable and one device is equipped with multiple sets of replaceable batteries, which is convenient for users to remove and charge the exhausted batteries and install the fully charged batteries to achieve continuous operation of the equipment. For example, in existing drones, in order to avoid the battery being too heavy and affecting the weight of the drone, the battery capacity can usually only be controlled within a small range, and low-capacity batteries mean short battery life, so existing drones usually use battery rotation to achieve continuous operation. Therefore, the battery connector of the current drone has the characteristics of many plug-in and unplug times. After a certain period of use, it is easy to increase the contact resistance of the connector due to the high number of plug-in and unplug times. In addition, the vibration during the operation of the drone causes the actual contact resistance to be larger than when it is stationary. Combined with the influence of the large overcurrent of the battery connector itself, it is easy to cause the connector to be too hot when in use, thereby shortening the service life.

[0057] In order to overcome the above technical problems, this embodiment provides a connector, which effectively improves the heat dissipation efficiency by creatively improving the heat dissipation of the contact 2 in the connector, thereby effectively avoiding the problem of excessive temperature when the connector is in use. The connector of this embodiment can be applied to various circuit connection structures that require frequent plugging and unplugging, which can be but not limited to drones, unmanned vehicles and other equipment.

[0058] Reference Figure 1-11 The connector of this embodiment includes a shell 1, a heat dissipation sleeve 3 and a plurality of contacts 2, the shell 1 having an installation cavity 11; the contacts 2 are arranged inside the installation cavity 11; the heat dissipation sleeve 3 is installed in the installation cavity 11, and the heat dissipation sleeve 3 has a heat dissipation cavity 31; at least part of the contacts 2 are installed in the heat dissipation cavity 31, and the contacts 2 arranged inside the heat dissipation cavity 31 are in contact with the wall surface of the heat dissipation cavity 31 to perform heat exchange with the heat dissipation sleeve 3.

[0059] The housing 1 is an insulating housing 1, which supports, fixes and insulates the contact 2 in the connector. The contact 2 is a conductor structure capable of transmitting electrical energy or electrical signals. The heat dissipation sleeve 3 preferably uses metal or composite materials with higher thermal conductivity, which can effectively conduct and dissipate the heat generated by the contact 2. During installation, the heat dissipation sleeve 3 can be completely installed in the installation cavity 11 of the housing 1.

[0060] Among the multiple contact pieces 2, according to the heat dissipation requirements, all the contact pieces 2 can be installed in the heat dissipation sleeve 3 respectively, or only some of the contact pieces 2 can be installed in the heat dissipation sleeve 3. For example, the positive and negative contact pieces 2 used for transmitting electric energy can be installed in the heat dissipation sleeve 3, and the contact pieces 2 used for transmitting signals can be directly installed in the installation cavity 11 of the shell 1 because of their less heat generation.

[0061] The connector structure of this embodiment can be used as a female socket 10 or a male socket 40. When used as a female socket 10, the contact piece 2 is completely received in the heat dissipation cavity 31 of the heat dissipation sleeve 3. When used as a male socket 40, only a portion of the contact piece 2 is received in the heat dissipation sleeve 3, and a portion is retained to extend for insertion into the female socket 10.

[0062] In the connector structure of this embodiment, a heat dissipation sleeve 3 is arranged between the insulating shell 1 and the contact piece 2. The contact piece 2 is installed in the heat dissipation sleeve 3 and is in direct contact with the heat dissipation sleeve 3. During operation, the heat generated by the contact piece 2 can be quickly transmitted to the heat dissipation sleeve 3 and dissipated outward, thereby effectively accelerating the heat dissipation efficiency of the contact piece 2, effectively reducing the operating temperature of the connector, and reducing the risk of shortening the service life of the connector due to excessive temperature.

[0063] In one embodiment, referring to Fig. 9The heat dissipation sleeve 3 includes an outer frame 32 and a partition 33 arranged in the outer frame 32. The partition 33 divides the internal space of the outer frame 32 into more than two heat dissipation cavities 31, and the contact pieces 2 are dispersedly installed in each of the heat dissipation cavities 31.

[0064] A partition 33 is provided in the heat dissipation sleeve 3 to separate it into at least two heat dissipation cavities 31. When multiple contact pieces 2 are installed in the heat dissipation sleeve 3, the contact pieces 2 can be dispersedly installed in multiple heat dissipation cavities 31, so that the total contact area between all contact pieces 2 and the heat dissipation sleeve 3 can be increased, thereby accelerating the heat transfer between the contact pieces 2 and the heat dissipation sleeve 3 and improving the heat dissipation efficiency. Specifically, a reasonable dispersed arrangement is performed according to the number of contact pieces 2 installed in each heat dissipation sleeve 3 and the number of heat dissipation cavities 31 distributed in the heat dissipation sleeve 3. One heat dissipation cavity 31 can be installed with one contact piece 2 or multiple contact pieces 2.

[0065] In one embodiment, the partition 33 divides the inner space of the outer frame 32 into the heat dissipation cavities 31 whose number corresponds to the number of the contact pieces 2 , and each contact piece 2 is installed in a corresponding heat dissipation cavity 31 .

[0066] Each contact piece 2 can be independently installed in a heat dissipation cavity 31, so that each contact piece 2 can be in contact with the heat dissipation sleeve 3 on all sides, ensuring that each contact piece 2 can obtain sufficient heat dissipation support and avoiding mutual conduction and accumulation of heat between the contact pieces 2. This structure can optimize the heat dissipation of the contact piece 2 to the greatest extent.

[0067] In one embodiment, referring to Figure 8 The heat dissipation cavity 31 is a through cavity that passes through the heat dissipation sleeve 3 along the plug-in direction. In this way, when assembling the connector, the contact piece 2 can be inserted into the heat dissipation cavity 31 along the plug-in direction.

[0068] Specifically, in the connector structure, there is a fixed plugging and unplugging direction during the docking and separation process between the male socket 40 and the female socket 10, and the through direction of the heat dissipation cavity 31 is a direction parallel to the plugging and unplugging direction. The heat dissipation cavity 31 is set as a through cavity structure, that is, its two ends are openings, and the openings at the two ends of the heat dissipation cavity 31 are respectively a first opening and a second opening. The external circuit can enter the heat dissipation cavity 31 through the first opening to be welded and connected with the contact 2, or the contact 2 can extend out of the heat dissipation cavity 31 through the first opening to be welded and connected with the external circuit; when it is set as the female socket 10, the contact 2 of the male socket 40 can be inserted from the second opening to achieve docking, and when it is set as the male socket 40, the contact 2 can extend from the second opening to facilitate plugging into the female socket 10. Therefore, the heat dissipation cavity 31 of the present scheme is set as a through cavity structure, which can achieve repeated contact between the periphery of the contact 2 and the heat dissipation sleeve 3 to ensure high heat dissipation efficiency, and does not affect the connection between the contact 2 and other circuit structures. In addition, the contact piece 2 can be inserted into the heat dissipation cavity 31 along the plug-in direction, that is, the contact piece 2 can be inserted into the heat dissipation cavity 31 from the first opening or the second opening. The plug-in installation method has the advantage of simple installation, and at the same time can ensure that the four sides of the contact piece 2 can effectively contact the heat dissipation sleeve 3 after insertion.

[0069] In one embodiment, referring to Fig.10 The contact piece 2 includes a connected supporting foot 22 and a contact piece 21, the supporting foot 22 is clamped and fixed to the heat dissipation sleeve 3, and the contact piece 21 is used to make contact with other connectors that are plugged into each other.

[0070] Among them, other connectors refer to connectors that are plugged into this connector when this connector is used. If this connector is a female connector, the other connectors are male connectors; if this connector is a male connector, the other connectors are female connectors, thereby realizing the connection between the male connector and the female connector.

[0071] Specifically, the contact piece 21 is the part of the contact piece 2 used to contact the contact piece 2 of another connector. It is preferably set as a spring structure, which can rely on elastic force to achieve mutual compression with the contact piece 2 of another connector after insertion, thereby ensuring good contact performance; the support foot 22 is the part that fixes the contact piece 2, and the reliability of its fixation determines the stability of the contact piece 2. In addition, the support foot 22 is usually welded to an external circuit, such as a wire, a copper sheet or a circuit board, to achieve effective transmission of electrical energy or signals.

[0072] The support foot 22 is fixed to the heat dissipation sleeve 3 by snapping. Specifically, a structure that can snap together (generally including snap-in protrusions, snap-in grooves, etc.) needs to be provided between the support foot 22 and the heat dissipation sleeve 3. When the contact piece 2 is inserted into the heat dissipation sleeve 3, the support foot 22 and the heat dissipation sleeve 3 are snapped together after being inserted into place, and the contact piece 2 is reliably fixed. The snap-in fixing method simplifies the installation process of the contact piece 2, and at the same time ensures the stability of the contact piece 2 in the heat dissipation sleeve 3. Even when the connector is vibrated or impacted, the contact piece 2 can maintain its position unchanged, thereby ensuring the reliability and stability of the connection. On the other hand, the support foot 22 and the heat dissipation sleeve 3 are fixed by snapping to achieve close contact, so the heat generated by the contact piece 2 during operation can be quickly transferred to the heat dissipation sleeve 3 through the support foot 22, and the heat dissipation sleeve 3 uses its large heat dissipation area and excellent thermal conductivity to dissipate the heat to the environment, thereby achieving an efficient heat dissipation effect.

[0073] In one embodiment, referring to Figure 7 The support foot 22 is provided with an elastic clamping portion 221, and the heat dissipation sleeve 3 is provided with a first positioning groove 34 located on the side wall of the heat dissipation cavity 31. At least part of the elastic clamping portion 221 extends into the first positioning groove 34, so that the contact piece 2 and the heat dissipation cavity 31 are fixedly clamped.

[0074] The elastic clamping part 221 is a key part of the support foot 22. It has a certain elasticity and deformation ability. When the contact piece 2 is inserted into the heat dissipation cavity 31 along the plug-in direction, the elastic clamping part 221 will be gradually compressed by the guiding effect of the side wall of the heat dissipation cavity 31. This compression process not only provides space for the smooth insertion of the contact piece 2, but also allows the elastic clamping part 221 to store elastic potential energy. When the contact piece 2 is inserted into the heat dissipation cavity 31 and reaches the set position, the elastic clamping part 221 reaches the position of the first positioning groove 34. Due to the loss of the limiting effect of the side wall, the elastic clamping part 221 will quickly return to its original state and clamp in the first positioning groove 34. This clamping effect allows the contact piece 2 to be firmly fixed in the heat dissipation sleeve 3 and is not easy to loosen or fall off.

[0075] The design of the elastic clamping portion 221 and the first positioning groove 34 of the present solution makes the installation process of the contact piece 2 simple and quick. During assembly, the contact piece 2 only needs to be inserted into the heat dissipation cavity 31 along the plugging direction, and the installation can be completed without using additional tools or complicated operation steps.

[0076] The contact piece 2 is a structure with good conductivity and good elasticity. During molding, the elastic clamping portion 221 can be directly stamped on the contact piece 2. The integral stamping can ensure the firm connection between the elastic clamping portion 221 and the contact piece 2 body, avoiding the looseness or misalignment problems that may occur during the subsequent assembly process. Optionally, the first positioning groove 34 provided in the heat dissipation sleeve 3 can be a through groove or a blind groove.

[0077] In one embodiment, referring to Figure 7 A tail limit block 222 is protruding from one side of the support foot 22 away from the contact piece 21, and the tail limit block 222 abuts against one end of the heat dissipation sleeve 3 away from the contact piece 21. The tail limit block 222 cooperates with the elastic clamping portion 221 to limit the movement of the contact piece 2 relative to the heat dissipation sleeve 3 along the plug-in and pull-out direction.

[0078] Specifically, a rear stop block 222 is provided at the rear of the support foot 22 so that the support foot 22 cannot be inserted into the heat dissipation cavity 31. Therefore, when inserting, the contact piece 21 can only be inserted into the heat dissipation cavity 31 with the front end thereof, until the rear stop block 222 abuts against the end surface of the heat dissipation sleeve 3, the contact piece 2 cannot be inserted further. At this time, the elastic clamping portion 221 is just aligned with the first positioning groove 34 and elastically resets to abut against the side wall of the first positioning groove 34, thereby limiting the contact piece 2 from disengaging from the heat dissipation sleeve 3 in the reverse direction. Figure 2-Figure 8 As shown, the tail limit block 222 limits the movement of the contact piece 2 in the first direction, and the elastic clamping portion limits the movement of the contact piece 2 in the direction opposite to the first direction. The two cooperate to jointly limit the movement of the contact piece 2 along the plugging and unplugging direction to prevent the contact piece 2 from loosening from the heat dissipation sleeve 3. This solution adopts the structure of the elastic clamping portion 221 and the tail limit block 222 cooperating to effectively lock the installed contact piece 2, which has the advantages of simple installation and good reliability after installation.

[0079] In one embodiment, in combination Figure 6 and Fig. 9 An avoidance groove 36 is provided at one end of the heat dissipation sleeve 3 away from the contact piece 21 , and the tail limit block 222 is inserted into the avoidance groove 36 , so that the end surface of the support foot 22 away from the contact piece 21 is basically flush with the end surface of the heat dissipation sleeve 3 .

[0080] Specifically, based on the setting of the avoidance groove 36, the tail limit block 222 can be stuck therein during installation. After installation, the end face of the supporting foot 22 is flush with the end face of the heat dissipation sleeve 3. When the connector of this embodiment is welded and connected to an external circuit (such as a conductive sheet, a circuit board, etc.), the contact piece 2 and the heat dissipation sleeve 3 can be welded to the conductive sheet together. In addition to being able to establish circuit conduction between the contact piece 2 and the conductive sheet, it is also convenient for the contact piece 2 and the heat dissipation sleeve 3 to quickly conduct heat to the conductive sheet and dissipate it outward, thereby further improving the heat dissipation efficiency.

[0081] In one embodiment, the side of the supporting foot 22 is provided with a limiting protrusion 223 protruding relative to the side wall of the contact piece 21, and the heat dissipation sleeve 3 is provided with a first limiting groove 35 located on the inner wall of the heat dissipation cavity 31 and extending along the plug-in direction. The first limiting groove 35 cooperates with the limiting protrusion 223 to limit the movement of the contact piece 2 relative to the heat dissipation sleeve 3 in a direction perpendicular to the plug-in direction. When installing the contact piece, the limiting protrusion 223 can slide into the first limiting groove 35 from the side end of the heat dissipation sleeve 3.

[0082] When installing the contact piece 2, the limiting protrusion 223 contacts the first limiting groove 35. Compared with the entire contact piece 2 contacting the inner wall of the heat dissipation sleeve 3, the contact area between the limiting protrusion 223 and the first limiting groove 35 is small, which can more quickly extend the contact piece 2 into and install it in the heat dissipation sleeve 3, and the installation is convenient and quick.

[0083] Specifically, assuming that the plane perpendicular to the plugging and unplugging direction is plane A, with the cooperation of the limiting protrusion 223 and the first limiting groove 35, the installed contact piece 2 cannot move in any direction within plane A, that is, this solution enhances the lateral stability of the contact piece 2 in the heat dissipation sleeve 3, which helps prevent the contact piece 2 from shifting or loosening when subjected to external force.

[0084] It is important that there is a contact piece 21 in the contact piece 2 structure. After installation, it is necessary to ensure that there is enough space between the contact piece 21 and the inner wall of the heat dissipation cavity 31 for the contact piece 21 to move elastically. The side of the support foot 22 of this solution is provided with a limiting protrusion 223 which is clipped into the first limiting groove 35. The first limiting groove 35 can be specifically arranged in the middle of the heat dissipation cavity 31, so that after installation, there can be enough space between the contact piece 2 and the inner wall of the heat dissipation cavity 31 for the contact piece 21 to move.

[0085] In one embodiment, the limiting protrusions 223 are disposed on two opposite sides of the supporting foot 22 .

[0086] By providing limiting protrusions 223 on two opposite sides of the supporting foot 22, the contact piece 2 is doubly limited in the heat dissipation sleeve 3. The two limiting protrusions 223 can limit the contact piece 2 from both sides respectively, effectively preventing the contact piece 2 from moving in the lateral direction.

[0087] In one embodiment, each of the contact pieces 2 includes two symmetrically arranged sub-pieces, both of which are provided with the elastic clamping portion 221 , and the bending directions of the elastic clamping portions 221 arranged on the two sub-pieces are opposite.

[0088] Specifically, this structure is applied to the female socket 10, the supporting feet 22 of the two sub-pieces are welded and connected, and a contact space is formed between the elastic clamping parts 221 of the two sub-pieces. When docking, the contact piece 2 of the male socket 40 can be inserted between the two sub-pieces to form a good contact. This structure adopts double-sided contact to effectively increase the contact area, improve the current carrying capacity, and reduce the resistance. The elastic clamping parts 221 with opposite bending directions are respectively set on the two sub-pieces, which can increase the number of contact points between the elastic clamping parts 221 on the entire contact piece 2 and the heat dissipation sleeve 3, and effectively improve the stability of the installation of the contact piece 2.

[0089] In one embodiment, the elastic clamping portion 221 is disposed on a side of the supporting leg 22 , a gap is formed between the elastic clamping portion 221 and the supporting leg 22 , and the elastic clamping portion 221 is extended toward a distal end of the supporting leg 22 .

[0090] The limiting protrusion 223 is located on the side of the supporting foot 22, and an elastic clamping portion 221 is arranged on it, which is easier to form a clamping connection with the first positioning groove 34 on the inner wall of the heat dissipation cavity 31. In specific implementation, an L-shaped groove can be directly opened on the limiting portion to form the elastic clamping portion 221. Obviously, this structure has the advantage of simple processing.

[0091] In one embodiment, referring to Figure 4 The installation cavity 11 includes a first installation cavity, and the heat dissipation sleeve 3 can be inserted into the first installation cavity along the plug-in direction; the shell 1 is provided with a locking protrusion 13 located on the inner wall of the first installation cavity, and the heat dissipation sleeve 3 is provided with a second positioning groove 37 located on the side wall of the heat dissipation cavity 31, and at least part of the locking protrusion 13 extends into the second positioning groove 37 to limit the movement of the heat dissipation sleeve 3 relative to the shell 1 along the plug-in direction.

[0092] Specifically, a heat dissipation sleeve 3 is installed in the first installation cavity, which can effectively accelerate the heat dissipation of the contact 2 installed therein. Therefore, the first installation cavity generally installs high-heat-generating contacts 2, such as positive contacts 2a, negative contacts 2b, etc.

[0093] Furthermore, in order to facilitate the extension of the contact 2 or the insertion of the contact 2 of other connectors, a grid bar 12 is provided on the side of the housing 1 close to the contact piece 21, and a gap is formed between the grid bars 12. When used as a male socket 40, the contact piece 21 can extend through the gap, and when used as a female socket 10, the contact piece 21 of the male socket 40 can be inserted through the gap.

[0094] Specifically, taking the example of setting the connector of this embodiment as a female socket 10, the grid bars 12 are arranged on the side of the housing 1 facing the male socket 40 to be docked, and there are insertion holes between the grid bars 12, allowing the contact pieces 2 of the male socket 40 to be inserted into the female socket 10 through the insertion holes. At the same time, the grid bars 12 can limit the installation of the heat dissipation sleeve 3 and limit the installation depth of the heat dissipation sleeve 3. In addition, a stop protrusion 13 is provided on the inner wall of the housing 1, which can limit the installed heat dissipation sleeve 3 to prevent the heat dissipation sleeve 3 from detaching from the housing 1, thereby ensuring the reliability of the installation of the heat dissipation sleeve 3. During installation, the contact piece 2 is first installed in the heat dissipation sleeve 3, and then the heat dissipation sleeve 3 is installed into the installation cavity 11 from the side of the installation cavity 11 close to the stop protrusion 13, so that the stop protrusion 13 can be snapped into the second positioning groove 37 on the outer wall of the heat dissipation cavity 31 to achieve snap-fit ​​fixation. This structure has the advantage of simple installation.

[0095] The second positioning groove 37 may be a through groove or a blind groove.

[0096] To facilitate processing, in one embodiment, the second positioning groove 37 and the aforementioned first positioning groove 34 are set through, so that only one hole opening operation needs to be performed on the heat dissipation sleeve 3, and the part of the through hole close to the inner wall of the heat dissipation sleeve 3 is used as the first positioning groove 34, and the part of the through hole close to the outer wall of the heat dissipation sleeve 3 is used as the second positioning groove 37.

[0097] Specifically, the installation cavity 11 includes a first installation cavity 11; the shell 1 is provided with a stop-slip protrusion 13 located on the inner wall of the first installation cavity 11, and the heat dissipation sleeve 3 is provided with a positioning opening located on the side wall of the heat dissipation cavity 31, and at least a portion of the stop-slip protrusion 13 extends into the positioning opening to limit the movement of the heat dissipation sleeve 3 relative to the shell 1 along the plug-in and pull-out direction; the contact piece is provided with an elastic clamping portion 221, and at least a portion of the elastic clamping portion 221 extends into the positioning opening to fix the contact piece 2 and the heat dissipation cavity 31 with a fixed clamping connection.

[0098] Among them, the positioning opening is an opening that passes through the side wall and is set on the heat dissipation sleeve 3. Referring to the position of the first positioning groove 34 or the second positioning groove 37 in the attached figure, the positioning opening can be set at the position of the first positioning groove 34 or the second positioning groove 37. By setting the positioning opening, the elastic clamping portion 221 can be extended into the positioning opening from the inner side of the heat dissipation sleeve 3, and the anti-slip protrusion 13 can be extended into the positioning opening from the outer side of the heat dissipation sleeve 3. Therefore, only one positioning opening is set, and the elastic clamping portion 221 can be used to limit and fix the contact piece 2 and the heat dissipation sleeve 3, and the anti-slip protrusion 13 can be used to limit and fix the heat dissipation sleeve 3 and the housing 1. The positioning opening can also be understood as an opening structure formed after the first positioning groove 34 and the second positioning groove 47 on the heat dissipation sleeve 3 are opened.

[0099] In one embodiment, a guiding slope is formed on a side of the anti-slip protrusion 13 facing the installation direction of the heat dissipation sleeve 3 .

[0100] Specifically, a guiding slope is provided on the side of the anti-slip protrusion 13 facing the installation direction of the heat dissipation sleeve 3, which can guide the heat dissipation sleeve 3 to be smoothly installed into the installation cavity 11 and squeeze and expand the anti-slip protrusions 13 on both sides, so that the heat dissipation sleeve 3 can smoothly pass over the anti-slip protrusions 13.

[0101] In one embodiment, the housing 1 is provided with a plurality of limiting ribs 14 circumferentially arranged around the inner wall of the first installation cavity, and the limiting ribs 14 extend along the plugging and unplugging direction, and the outer periphery of the heat dissipation sleeve 3 abuts against each of the limiting ribs 14 .

[0102] Specifically, a plurality of limiting ribs 14 are arranged at intervals on the inner wall of the shell 1 , which can reduce the contact area between the heat dissipation sleeve 3 and the shell 1 . Each limiting rib 14 can be in close contact with the heat dissipation sleeve 3 , thereby improving the installation stability of the heat dissipation sleeve 3 .

[0103] In one embodiment, in combination Figure 3-Figure 4 The contact piece 2 includes a supporting foot 22 and a contact piece 21 connected to each other, the supporting foot 22 is provided with an elastic clamping portion 221, the mounting cavity 11 further includes a second mounting cavity, part of the contact piece 2 is arranged in the second mounting cavity, the housing 1 is provided with a third positioning groove 17 located on the side wall of the second mounting cavity, and the elastic clamping portion 221 of the contact piece 2 arranged in the second mounting cavity is clamped into the third positioning groove 17;

[0104] A tail limit block 222 is protruded from one side of the contact piece 2, and the tail limit block 222 abuts against the end of the housing 1. The tail limit block 222 cooperates with the elastic clamping portion 221 to limit the movement of the contact piece 2 relative to the heat dissipation sleeve 3 along the plug-in and pull-out direction.

[0105] Specifically, the second installation cavity is not provided with a heat dissipation sleeve 3, and the contact piece 2 is directly installed in the second installation cavity, so the second installation cavity is suitable for installing a contact piece 2 with less heat generation, such as a signal contact piece 2c. Similarly, the elastic clamping portion 221 and the tail limit block 222 are used to clamp the contact piece 2 into the second installation cavity, which has the advantages of easy installation and good reliability.

[0106] In one embodiment, the inner wall of the second mounting cavity is provided with a second limiting groove 16 extending along the plugging and unplugging direction, and part of the supporting foot 22 is located in the second limiting groove 16, and the second limiting groove 16 limits the movement of the contact piece 2 relative to the second mounting cavity in a direction perpendicular to the plugging and unplugging direction.

[0107] Similarly, by using the second limiting sliding groove 16 on the inner wall of the second installation cavity to clamp the supporting foot 22 of the contact piece 2, the reliability of the installation of the contact piece 2 can be effectively improved.

[0108] In one embodiment, a conductive sheet is further included. The conductive sheet is disposed at one end of the heat dissipation sleeve 3 close to the supporting foot 22 . The contact sheet 2 and the heat dissipation sleeve 3 are both fixedly connected to the conductive sheet.

[0109] Specifically, the conductive sheet is a structure such as a copper sheet or copper busbar connected to the connector. The contact piece 2 and the heat dissipation sleeve 3 are welded to the conductive sheet together. In addition to establishing circuit conduction between the contact piece 2 and the conductive sheet, the contact piece 2 and the heat dissipation sleeve 3 also facilitate the contact piece 2 and the heat dissipation sleeve 3 to quickly conduct heat to the conductive sheet and dissipate it outward, thereby further improving the heat dissipation efficiency.

[0110] In another embodiment, a circuit board is further included. The circuit board is disposed at one end of the heat dissipation sleeve 3 close to the supporting foot 22. The contact sheet 2 and the heat dissipation sleeve 3 are both fixedly connected to the conductive sheet.

[0111] Similarly, welding the contact piece 2 and the heat dissipation sleeve 3 to the circuit board together can not only establish circuit conduction between the contact piece 2 and the circuit board, but also facilitate the contact piece 2 and the heat dissipation sleeve 3 to quickly transfer heat to the circuit board and dissipate it outward, further improving the heat dissipation efficiency.

[0112] In one embodiment, the heat dissipation sleeve 3 is made of copper, copper alloy, aluminum or aluminum alloy.

[0113] The heat dissipation sleeve 3 made of the above materials has the advantages of good thermal conductivity and easy material acquisition and processing.

[0114] In one embodiment, referring to Fig.11 The housing 1 is provided with a positioning fool-proof hole 15.

[0115] The housing 1 is provided with a positioning foolproof hole 15, which can facilitate the alignment and guidance of the male socket 40 and the female socket 10 when plugging, and avoid the problem of reverse plugging of the positive and negative poles. Specifically, the connector of this embodiment is a female socket 10, and two positioning foolproof holes 15 are respectively provided on both sides of the housing 1, and the two positioning foolproof holes 15 have different shapes; the male socket 40 is correspondingly provided with two foolproof protrusions 41, and the two foolproof protrusions 41 can be respectively plugged into the two positioning foolproof holes 15 when plugging, so as to avoid the problem of reverse plugging of the male socket 40 and the female socket 10.

[0116] In one embodiment, referring to Figure 4 The installation cavity 11 includes a first installation cavity and a second installation cavity, the first installation cavity includes a positive electrode installation cavity 11a and a negative electrode installation cavity 11b, and the second installation cavity includes a signal electrode installation cavity 11c;

[0117] The heat dissipation sleeve 3 includes a positive heat dissipation sleeve 3a and a negative heat dissipation sleeve 3b, the contact piece 2 includes a positive contact piece 2a and a negative contact piece 2b, the positive heat dissipation sleeve 3a is installed in the positive mounting cavity 11a, and the positive contact piece 2a is installed in the positive heat dissipation sleeve 3a; the negative heat dissipation sleeve 3b is installed in the negative mounting cavity 11b, and the negative contact piece 2b is installed in the negative heat dissipation sleeve 3b.

[0118] The contact piece 2 includes a signal contact piece 2c, and the signal contact piece 2c is installed in the signal electrode installation cavity 11c; the signal electrode installation cavity 11c is located between the positive electrode installation cavity 11a and the negative electrode installation cavity 11b.

[0119] A positive heat dissipation sleeve 3a and a negative heat dissipation sleeve 3b are provided for the positive contact piece 2a and the negative contact piece 2b respectively, which can realize effective heat dissipation of the positive contact piece 2a and the negative contact piece 2b respectively, and effectively improve the safety and durability of the connector.

[0120] The signal contact 2c is designed to be installed in the signal electrode mounting cavity 11c. It is responsible for transmitting signals between connectors, which can be analog signals or digital signals, depending on the application requirements. The signal contact 2c generates less heat during operation, so the heat dissipation sleeve 3 is omitted to reduce product costs. The positive electrode mounting cavity 11a and the negative electrode mounting cavity 11b are respectively arranged on both sides of the signal electrode mounting cavity 11c, so that the high-heating positive electrode contact 2a and the negative electrode contact 2b can be kept at the maximum distance to avoid heat accumulation and optimize the heat dissipation effect.

[0121] In one embodiment, the installation cavity 11 includes a plurality of installation cavities, and a partition cavity 18 is provided between two adjacent installation cavities 11 , and the partition cavity 18 is a through cavity along the plug-in direction.

[0122] Providing a spacing cavity 18 between two adjacent mounting cavities 11 can increase the distance between the contact pieces 2 between the two adjacent mounting cavities 11 , which is beneficial to heat dissipation and reduces the problem of signal interference between the contact pieces 2 .

[0123] In one embodiment, the connector is a female connector, the contact 2 is a female contact of the female connector, which is used to be plugged with a male contact of a male connector, and the female contact is completely installed in the installation cavity 11.

[0124] In another embodiment, the connector is a male connector, and the contact 2 is a male contact of the male connector, which is used to be plugged into a female contact of a female connector; the male contact is partially fixed in the installation cavity 11 and partially extends out of the installation cavity 11.

[0125] On the other hand, a drone is provided, comprising a power module, wherein the power module comprises the above-mentioned connector.

[0126] Among them, the drone can be, for example, an agricultural drone, a remote sensing drone, etc. Specifically, the power module of the drone includes a battery and an electrical connection part arranged on the fuselage, one of the battery and the electrical connection part on the fuselage is provided with a male connector, and the other is provided with a female connector. After the male connector and the female connector are plugged in, a connection between the battery and the electrical connection part can be established, so that the battery is used to power the power modules on the drone. The power modules may include, for example, a driving module, a spraying operation module, a sowing operation module, a sensing module, etc.; wherein at least one of the male connector and the female connector adopts the structure of the connector of this embodiment.

[0127] The connector according to this embodiment has the advantage of high heat dissipation efficiency, and can effectively avoid the problem of shortened connector life due to increased resistance and increased heat dissipation after frequent plugging and unplugging.

[0128] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0129] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0130] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0131] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A connector, characterized in that: include: A housing (1) having a mounting cavity (11); A plurality of contact pieces (2) are arranged inside the installation cavity (11); A heat dissipation sleeve (3) is installed in the installation cavity (11), and the heat dissipation sleeve (3) has a heat dissipation cavity (31); At least part of the contact piece (2) is installed in the heat dissipation cavity (31), and the contact piece (2) arranged inside the heat dissipation cavity (31) contacts the wall surface of the heat dissipation cavity (31) to perform heat exchange with the heat dissipation sleeve (3).

2. The connector according to claim 1, characterized in that: The heat dissipation sleeve (3) comprises an outer frame (32) and a partition (33) arranged in the outer frame (32); the partition (33) divides the internal space of the outer frame (32) into more than two heat dissipation cavities (31); and the contact pieces (2) are dispersedly installed in each of the heat dissipation cavities (31).

3. The connector according to claim 2, characterized in that: The partition (33) divides the internal space of the outer frame (32) into heat dissipation cavities (31) whose number corresponds to the number of the contact sheets (2), and each contact sheet (2) is installed in a corresponding heat dissipation cavity (31).

4. The connector according to claim 1, characterized in that: The heat dissipation cavity (31) is a through cavity that passes through the heat dissipation sleeve (3) along the plugging and unplugging direction.

5. The connector according to claim 1, characterized in that: The contact piece (2) comprises a connected supporting foot (22) and a contact piece (21); the supporting foot (22) is fixedly engaged with the heat dissipation sleeve (3); and the contact piece (21) is used to make contact with other connectors that are plugged into each other.

6. The connector according to claim 5, characterized in that: The support foot (22) is provided with an elastic clamping portion (221), and the heat dissipation sleeve (3) is provided with a first positioning groove (34) located on the side wall of the heat dissipation cavity (31), and at least a portion of the elastic clamping portion (221) extends into the first positioning groove (34), so that the contact piece (2) and the heat dissipation cavity (31) are fixedly clamped.

7. The connector according to claim 6, characterized in that: A tail limit block (222) is protrudingly provided on one side of the support foot (22) away from the contact piece (21); the tail limit block (222) abuts against one end of the heat sink (3) away from the contact piece (21); and the contact piece (2) is restricted from moving in the plugging and unplugging direction relative to the heat sink (3) by the cooperation of the tail limit block (222) and the elastic clamping portion (221).

8. The connector according to claim 7, characterized in that: An avoidance groove (36) is provided at one end of the heat dissipation sleeve (3) away from the contact piece (21), and the tail limit block (222) is inserted into the avoidance groove (36), so that the end surface of the support foot (22) away from the contact piece (21) is substantially flush with the end surface of the heat dissipation sleeve (3).

9. The connector according to claim 5, characterized in that: The side of the support foot (22) is provided with a limiting protrusion (223) protruding relative to the side wall of the contact piece (21), and the heat dissipation sleeve (3) is provided with a first limiting sliding groove (35) located on the inner wall of the heat dissipation cavity (31) and extending along the plug-in direction, and the first limiting sliding groove (35) cooperates with the limiting protrusion (223) to limit the movement of the contact piece (2) relative to the heat dissipation sleeve (3) in a direction perpendicular to the plug-in direction.

10. The connector according to claim 9, characterized in that: The limiting protrusions (223) are provided on two opposite sides of the supporting foot (22).

11. The connector according to claim 6, characterized in that: Each of the contact sheets (2) comprises two symmetrically arranged sub-sheets, the two sub-sheets are provided with the elastic clamping portion (221), and the bending directions of the elastic clamping portions (221) arranged on the two sub-sheets are opposite; and / or, The elastic clamping portion (221) is arranged on the side of the supporting foot (22), a gap is formed between the elastic clamping portion (221) and the supporting foot (22), and the elastic clamping portion (221) is extended toward the end of the supporting foot (22).

12. The connector according to claim 1, characterized in that The installation cavity (11) comprises a first installation cavity (11); the housing (1) is provided with a stop-slip protrusion (13) located on the inner wall of the first installation cavity (11); the heat dissipation sleeve (3) is provided with a second positioning groove (37) located on the side wall of the heat dissipation cavity (31); at least a portion of the stop-slip protrusion (13) extends into the second positioning groove (37) to limit the movement of the heat dissipation sleeve (3) relative to the housing (1) along the plugging and unplugging direction; or, The installation cavity (11) comprises a first installation cavity (11); the housing (1) is provided with a stop-slip protrusion (13) located on the inner wall of the first installation cavity (11); the heat dissipation sleeve (3) is provided with a positioning opening located on the side wall of the heat dissipation cavity (31); at least a portion of the stop-slip protrusion (13) extends into the positioning opening to limit the movement of the heat dissipation sleeve (3) relative to the housing (1) along the plug-in and pull-out direction; the contact piece is provided with an elastic clamping portion (221); at least a portion of the elastic clamping portion (221) extends into the positioning opening to ensure that the contact piece (2) is fixedly clamped with the heat dissipation cavity (31).

13. The connector according to claim 12, characterized in that: A guiding inclined surface is formed on one side of the anti-slip protrusion (13) facing the installation direction of the heat dissipation sleeve (3).

14. The connector according to claim 12, characterized in that: The housing (1) is provided with a plurality of limiting ribs (14) arranged at intervals in the circumferential direction around the inner wall of the first installation cavity (11); the limiting ribs (14) extend along the plugging and unplugging direction, and the outer periphery of the heat dissipation sleeve (3) abuts against each of the limiting ribs (14).

15. The connector according to claim 1, characterized in that The contact piece (2) comprises a supporting foot (22) and a contact piece (21) connected to each other, the supporting foot (22) is provided with an elastic clamping portion (221), the mounting cavity (11) further comprises a second mounting cavity (11), part of the contact piece (2) is arranged in the second mounting cavity (11), the housing (1) is provided with a third positioning groove (17) located on the side wall of the second mounting cavity (11), and the elastic clamping portion (221) of the contact piece (2) arranged in the second mounting cavity (11) is clamped into the third positioning groove (17); A tail limit block (222) is protruding from one side of the contact piece (2), the tail limit block (222) abuts against the end of the housing (1), and the tail limit block (222) cooperates with the elastic clamping portion (221) to limit the movement of the contact piece (2) relative to the heat dissipation sleeve (3) in the plugging and unplugging direction.

16. The connector according to claim 15, characterized in that The inner wall of the second mounting cavity (11) is provided with a second limiting slide groove (16) extending in the plugging and unplugging direction, and a portion of the supporting foot (22) is located in the second limiting slide groove (16), so that the contact piece (2) is limited by the second limiting slide groove (16) to move relative to the second mounting cavity (11) in a direction perpendicular to the plugging and unplugging direction.

17. The connector according to claim 5, characterized in that It also includes a conductive sheet, which is arranged at one end of the heat dissipation sleeve (3) close to the supporting foot (22), and the contact sheet (2) and the heat dissipation sleeve (3) are both fixedly connected to the conductive sheet; or, It also comprises a circuit board, which is arranged at one end of the heat dissipation sleeve (3) close to the supporting foot (22), and the contact sheet (2) and the heat dissipation sleeve (3) are both fixedly connected to the conductive sheet.

18. The connector according to claim 1, characterized in that The heat dissipation sleeve (3) is made of copper, copper alloy, aluminum or aluminum alloy.

19. The connector according to claim 1, characterized in that The installation cavity (11) comprises a first installation cavity (11) and a second installation cavity (11), the first installation cavity (11) comprises a positive electrode installation cavity (11a) and a negative electrode installation cavity (11b), and the second installation cavity (11) comprises a signal electrode installation cavity (11c); The heat dissipation sleeve (3) comprises a positive heat dissipation sleeve (3a) and a negative heat dissipation sleeve (3b); the contact piece (2) comprises a positive contact piece (2a) and a negative contact piece (2b); the positive heat dissipation sleeve (3a) is installed in the positive installation cavity (11a), and the positive contact piece (2a) is installed in the positive heat dissipation sleeve (3a); the negative heat dissipation sleeve (3b) is installed in the negative installation cavity (11b), and the negative contact piece (2b) is installed in the negative heat dissipation sleeve (3b); The contact piece (2) comprises a signal contact piece (2c), and the signal contact piece (2c) is installed in the signal electrode installation cavity (11c); the signal electrode installation cavity (11c) is located between the positive electrode installation cavity (11a) and the negative electrode installation cavity (11b).

20. The connector according to claim 1, characterized in that The installation cavity (11) comprises a plurality of them, and a spacing cavity (18) is provided between two adjacent installation cavities (11), wherein the spacing cavity (18) is a through cavity along the plugging direction.

21. The connector according to any one of claims 1 to 20, characterized in that: The connector is a female connector, the contact (2) is a female contact of the female connector, used for plugging with a male contact of a male connector, and the female contact is completely installed in the installation cavity (11).

22. The connector according to any one of claims 1-2, 12-15, 18-20, characterized in that: The connector is a male connector, and the contact (2) is a male contact of the male connector, which is used to be plugged into a female contact of a female connector; the male contact is partially fixed in the installation cavity (11) and partially extends out of the installation cavity (11).

23. A drone, characterized in that: It comprises a power module, and the power module comprises the connector as described in any one of claims 1-22.

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