Electrical connection plug, electrical connection device and electric vehicle

Abstract

The application discloses an electric connection plug, an electric connection device and an electric automobile. The electric connection plug comprises a first fixed plate, a mounting seat, an electric connection assembly and a plurality of connector assemblies. The electric connection assembly and the plurality of connector assemblies are connected to the mounting seat, and the mounting seat is floatingly connected with the first fixed plate. The electric connection device comprises an electric connection socket and the electric connection plug as described above. The electric connection assembly and the plurality of connector assemblies are connected to the electric connection socket. The electric automobile comprises a battery pack, a vehicle body and the electric connection device as described above. The electric connection plug is connected with the vehicle body, and the electric connection socket is connected with the battery pack. The application realizes simultaneous water and electricity connection, reduces actual use space, solves actual installation space problems, and reduces cost. Meanwhile, the application effectively avoids abnormal phenomena such as electric connection failure or burning, liquid outflow and spattering.

Description

TECHNICAL FIELD

[0001] The present application relates to an electric connection plug, an electric connection device and an electric vehicle. BACKGROUND

[0002] The electric vehicle generally adopts a replaceable battery pack, which can be taken off at any time for replacement or charging, and then installed on the vehicle body after the replacement or charging is completed. The existing electric vehicle with replaceable structure generally sets a corresponding mounting position on the vehicle body support of the vehicle body, and the battery pack is placed in the mounting position and connected with the vehicle end electric connector on the vehicle body through the battery end electric connector, and then fixed by using a locking device. In this process, the electrodes of the battery end electric connector on the battery pack need to be in contact with the electrodes on the vehicle end electric connector to ensure the power output. At the same time, the vehicle body support of the vehicle body is also provided with a cooling system to cool the battery pack, which transmits the temperature of the battery cells in the battery pack to the outside of the battery pack through the flow of liquid, balances the temperature of the battery pack, improves the full capacity of the battery pack, and directly improves the performance indicators such as the use environment limitation of the vehicle, the vehicle power performance, and the battery life.

[0003] However, the electric connector and the cooling pipeline of the electric vehicle are arranged separately, which occupies a large space, and at the same time, the cooling pipeline adopts a rigid connection mode, which is unstable due to frequent replacement, vehicle vibration and other influences, and even causes liquid outflow and splashing. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the defects in the prior art, such as the separate arrangement of the electric connection and the water connection, the large actual use space, and the unstable connection of the cooling pipeline, and to provide an electric connection plug, an electric connection device and an electric vehicle.

[0005] The present application solves the above technical problems by the following technical scheme:

[0006] An electric connection plug for electric connection between a battery pack and a vehicle body of an electric vehicle, characterized in that the electric connection plug comprises a first fixed plate, a mounting seat, an electric connection assembly and a plurality of plug-in assemblies, the plug-in assemblies are used for the cooling source to pass through to cool the battery pack, the electric connection assembly and the plurality of plug-in assemblies are connected to the mounting seat, and the mounting seat and the first fixed plate are floatingly connected.

[0007] In this scheme, the above structure is adopted, the electric connection plug realizes water and electricity connection at the same time through the electric connection assembly and the plurality of plug-in assemblies, reduces the actual use space, solves the problem of actual installation space, and reduces the cost.

[0008] In addition, the electric connection assembly and the plurality of connector assemblies are connected between the mounting base and the first fixed plate in a floating manner, so that the electric connection assembly and the plurality of connector assemblies can move together with the mounting base after being connected, the floating connection manner greatly enhances the stability of water and electricity connection of the electric connection plug, and effectively avoids abnormality such as electric connection failure or burning, and liquid outflow and spattering.

[0009] Preferably, the connector assembly comprises a connecting pipe, an elastic pipe and a plug, the plug is connected to the mounting base, the connecting pipe is connected to the first fixed plate, the elastic pipe is located between the mounting base and the first fixed plate, and two ends of the elastic pipe are connected to the connecting pipe and the plug respectively.

[0010] In the scheme, the elastic pipe can be deformed, so that the connecting pipe and the plug are connected in a floating manner, and the connector assembly can move together with the mounting base when water is connected, so that the electric connection plug is more reliable when water is connected, and the outflow phenomenon is effectively avoided.

[0011] Preferably, a plurality of protruding portions are arranged on the side of the mounting base facing the first fixed plate, the plurality of protruding portions correspond to the plurality of connector assemblies one by one, and the elastic pipe and the plug are connected to two ends of the protruding portions respectively and are connected in communication through the protruding portions.

[0012] In the scheme, the elastic pipe and the plug are connected to two ends of the protruding portions respectively, which increases the connection area between the connector assembly and the mounting base, realizes convenient connection, and has high connection strength.

[0013] Preferably, the plug is sealingly connected to the inner wall surface of the protruding portion, and the elastic pipe is sealingly sleeved on the outer peripheral surface of the protruding portion.

[0014] In the scheme, the elastic pipe and the plug are sealingly connected to the outer peripheral surface and the inner wall surface of the protruding portion respectively, so that the connection area between the elastic pipe and the plug and the protruding portion is large, the connection is convenient, and the connection strength is high.

[0015] Preferably, the connecting pipe penetrates through the first fixed plate, a connecting portion is arranged on the outer peripheral surface of the connecting pipe, the connecting portion is connected to the first fixed plate, and the elastic pipe is sealingly connected to the connecting pipe.

[0016] In the scheme, the connecting portion is fixedly connected to the first fixed plate through the above structure, so that the connection is more convenient.

[0017] Preferably, the elastic pipe is made of a flexible material.

[0018] Preferably, the material of the elastic connecting pipe is rubber.

[0019] Preferably, the two ends of the elastic connecting pipe are respectively sealed and connected to the connecting pipe and the mounting base and communicate with the connecting pipe and the plug connector, and the connecting pipe, the elastic connecting pipe and the plug connector are used for the cold source to pass through.

[0020] Preferably, the electric connector plug further comprises an annular sealing ring, the annular sealing ring is sleeved on the mounting base and the first fixed plate, and the inner wall surfaces of the annular sealing ring are respectively connected to the mounting base and the first fixed plate.

[0021] In the scheme, the annular sealing ring has a sealing effect, so that the floating connection between the mounting base and the first fixed plate can be achieved, and the sealing effect of the electric connector plug is effectively enhanced. At the same time, the annular sealing ring will be sealed against the second fixed plate, and the annular sealing ring and the electric connector socket are sealed, and the waterproof sealing performance is good.

[0022] Preferably, the electric connection assembly comprises a conductive post, a flexible conductive piece and a conductive plug, the conductive post is arranged in the mounting base, the conductive plug is arranged in the first fixed plate, and the two ends of the flexible conductive piece are respectively connected to the conductive post and the conductive plug.

[0023] In the scheme, the flexible conductive piece itself can be deformed, so that the floating electrical connection between the conductive plug and the conductive post is achieved through the flexible conductive piece, the electrical connection failure is effectively avoided, and the reliability and service life during electrical connection are greatly enhanced.

[0024] Preferably, the flexible conductive piece comprises an elastic conductive wire, and the two ends of the elastic conductive wire are respectively connected to the conductive post and the conductive plug.

[0025] Alternatively, the flexible conductive piece comprises a conductive spring, and the two ends of the conductive spring are respectively connected to the conductive post and the conductive plug.

[0026] Alternatively, the flexible conductive piece comprises a cavity, the cavity is made of a flexible conductive material, and the two ends of the cavity are respectively connected to the conductive post and the conductive plug.

[0027] An electric connection device, characterized in that it comprises an electric connection socket and an electric connection plug as described above, and the electric connection assembly and a plurality of the plug-in assemblies are connected to the electric connection socket.

[0028] In the scheme, the above structure is adopted to simultaneously connect water and electricity, reduce the actual use space, solve the actual installation space problem, and reduce the cost. Meanwhile, the floating connection mode greatly enhances the stability of the water and electricity connection, effectively avoids the abnormality such as the failure or burning of the electricity connection, and the liquid outflow and spattering phenomenon.

[0029] Preferably, the electricity connection socket comprises a second fixed plate, an electricity connection piece and a plurality of plug-in sockets, the electricity connection piece and the plurality of plug-in sockets are connected to the second fixed plate, the electricity connection piece is detachably electrically connected to the electricity connection assembly, the plurality of plug-in sockets correspond to the plurality of plug-in assemblies one by one, and the plug-in socket is detachably connected to the plug-in assembly.

[0030] Preferably, one end of the plug-in assembly towards the plug-in socket has a plug-in head, the plug-in socket is sleeved on the plug-in head and can move on the plug-in head along the length direction of the plug-in head, and the plug-in socket is in communication with the plug-in head.

[0031] In the scheme, the plug-in socket and the plug-in head can play a positioning role, the electricity connection device can realize accurate water connection, and the water and electricity connection precision is ensured. Meanwhile, the positioning pin and the positioning sleeve structure between the electricity connection plug and the electricity connection socket can be omitted, and the cost is reduced.

[0032] Preferably, the plug-in head and the electricity connection assembly are exposed to the side of the mounting seat towards the second fixed plate, and the plug-in head and the plug-in socket are connected before the electricity connection assembly and the electricity connection piece.

[0033] In the scheme, the above structure is adopted to ensure the water and electricity connection precision of the electricity connection device, improve the service life, and reduce the use cost. Meanwhile, the leakage phenomenon is avoided.

[0034] An electric vehicle, characterized in that it comprises a battery pack, a vehicle body and the electricity connection device as described above, the electricity connection plug is connected to the vehicle body, and the electricity connection socket is connected to the battery pack.

[0035] On the basis of conforming to the common sense in the art, the above preferred conditions can be combined arbitrarily, that is, the preferred examples of the present application are obtained.

[0036] The positive progress effect of the present application is that:

[0037] The electric connection plug, the electric connection device and the electric automobile of the present application realize water and electricity connection simultaneously through the electric connection assembly and the connector assembly, reduce the actual use space, solve the actual installation space problem, and reduce the cost. At the same time, the stability of water and electricity connection is greatly enhanced through the floating connection mode, and the abnormality such as electric connection failure or burning, liquid outflow and spatter phenomenon is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is a structure schematic view of the electric connection device of the electric automobile of the embodiment of the present application.

[0039] Figure 2 It is an internal structure schematic view of the electric connection device of the electric automobile of the embodiment of the present application.

[0040] Figure 3 It is a structure schematic view of the electric connection plug of the electric connection device of the electric automobile of the embodiment of the present application.

[0041] Figure 4 It is an internal structure schematic view of the electric connection plug of the electric connection device of the electric automobile of the embodiment of the present application.

[0042] BRIEF DESCRIPTION OF DRAWINGS

[0043] Electric connection plug 1

[0044] First fixed plate 11

[0045] Mounting seat 12

[0046] Protruding part 121

[0047] Electric connection assembly 13

[0048] Conductive pole 131

[0049] Flexible conductive part 132

[0050] Conductive plug 133

[0051] Connector assembly 14

[0052] Plug connector 141

[0053] Elastic connecting pipe 142

[0054] Connecting pipe 143

[0055] Connecting part 144

[0056] Annular sealing ring 15

[0057] Electric connection socket 2

[0058] Second fixed plate 21

[0059] Electric connection part 22

[0060] plug-in socket 23 DETAILED DESCRIPTION

[0061] The present application will be more fully understood from the following detailed description taken in connection with the accompanying drawings, in which:

[0062] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the embodiment of the present application discloses an electric vehicle, which comprises a battery pack, a vehicle body and an electric connection device. The electric connection device comprises an electric connection plug 1 and an electric connection socket 2, the electric connection plug 1 is connected with the vehicle body, and the electric connection socket 2 is connected with the battery pack. The electric connection plug 1 and the electric connection socket 2 are respectively arranged on the vehicle body and the battery pack of the electric vehicle, and the electric connection plug 1 and the electric connection socket 2 are connected, so that the electric connection between the battery pack and the vehicle body of the electric vehicle is realized.

[0063] The electric connection plug 1 comprises a first fixed plate 11, a mounting seat 12, an electric connection assembly 13 and a plurality of plug-in assemblies 14, the electric connection assembly 13 and the plurality of plug-in assemblies 14 are connected to the mounting seat 12, and the mounting seat 12 is floatingly connected with the first fixed plate 11. A gap is left between the first fixed plate 11 and the mounting seat 12, the first fixed plate 11 is fixedly arranged on the vehicle body, the first fixed plate 11 and the mounting seat 12 are connected through the electric connection assembly 13 and the plurality of plug-in assemblies 14, the electric connection assembly 13 and the plurality of plug-in assemblies 14 are deformed through the structure between the first fixed plate 11 and the mounting seat 12, so that the mounting seat 12 can be displaced relative to the first fixed plate 11, thereby effectively enhancing the stability of the water and electric connection of the electric connection device.

[0064] The electric connection plug 1 is connected to the electric connection socket 2 through the electric connection assembly 13 to realize electric connection, and the electric connection plug 1 is connected to the electric connection socket 2 through the plurality of plug-in assemblies 14 to realize water connection, so that the electric connection device realizes simultaneous water and electric connection. Compared with the prior art of separate electric connection and water connection, that is, compared with the prior art of arranging the cold source plug-in and the electric connection assembly on different mounting plates, the electric connection device of the embodiment arranges the electric connection assembly 13 and the plurality of plug-in assemblies 14 on the mounting seat 12, and the connection is controlled by each other. The water and electric connection precision is high, and the excessive positioning structure is reduced, thereby reducing the actual use space, solving the actual installation space problem, and reducing the cost. At the same time, the electric connection assembly 13 and the plurality of plug-in assemblies 14 are connected between the mounting seat 12 and the first fixed plate 11 through floating connection. The electric connection assembly 13 and the plurality of plug-in assemblies 14 can move together with the mounting seat 12 after connection. Through the floating connection mode, the stability of the water and electric connection of the electric connection device is greatly enhanced, and the abnormality such as electric connection failure or burning, liquid outflow and spattering phenomenon is effectively avoided.

[0065] The electric connection socket 2 includes a second fixed plate 21, an electric connection piece 22 and a plurality of plug-in seats 23. The electric connection piece 22 and the plurality of plug-in seats 23 are connected to the second fixed plate 21, and the electric connection piece 22 is detachably connected to the electric connection assembly 13. The plurality of plug-in seats 23 correspond to the plurality of plug-in assemblies 14 one by one, and the plug-in seat 23 is detachably connected to the plug-in assembly 14. The electric connection piece 22 and the plurality of plug-in seats 23 are directly mounted and connected on the second fixed plate 21, which is convenient to install and connect. The electric connection piece 22 is connected to the electric connection assembly 13 to realize electric connection, and the plug-in seat 23 is connected to the plug-in assembly 14 to realize water connection. At the same time, the plurality of plug-in seats 23 are connected with the plurality of plug-in assemblies 14, the plurality of plug-in assemblies 14 are connected with the cooling system of the vehicle body, and the plurality of plug-in seats 23 are connected with the battery end, so that the cooling water provided by the external cooling system realizes the circulating cooling of the battery pack through the plurality of plug-in assemblies 14 and the plurality of plug-in seats 23.

[0066] The connector assembly 14 comprises a connecting pipe 143, an elastic connecting pipe 142 and a plug 141. The plug 141 is connected to the mounting base 12. The connecting pipe 143 is connected to the first fixed plate 11. The elastic connecting pipe 142 is located between the mounting base 12 and the first fixed plate 11. The two ends of the elastic connecting pipe 142 are respectively connected to the connecting pipe 143 and the plug 141. The connecting pipe 143 is connected to the first fixed plate 11. The plug 141 is connected to the mounting base 12. The connecting pipe 143 is in a fixed state with the first fixed plate 11. The plug 141 is fixedly connected to the mounting base 12. The elastic connecting pipe 142 can be axially stretched and deformed or radially twisted and deformed. The first fixed plate 11 and the mounting base 12 can be floating. The elastic connecting pipe 142 can be deformed. The connecting pipe 143 and the plug 141 can be axially stretched, radially twisted and connected. The connecting pipe 143 and the plug 141 are floatingly connected. The connector assembly 14 can move when water is connected. The electric connection plug 1 is more reliable when water is connected. The external leakage phenomenon is effectively avoided.

[0067] The elastic connecting pipe 142 is made of a flexible material. The elastic connecting pipe 142 enables the connecting pipe 143 and the plug 141 to be floatingly connected. Preferably, the material of the elastic connecting pipe 142 is rubber, which reduces the cost.

[0068] The mounting base 12 is provided with a plurality of protruding portions 121 on the side facing the first fixed plate 11. The plurality of protruding portions 121 correspond to the plurality of connector assemblies 14 one by one. The elastic connecting pipe 142 and the plug 141 are respectively connected to the two ends of the protruding portions 121 and are connected through the protruding portions 121. The protruding portions 121 extend outward in the direction close to the first fixed plate 11. The elastic connecting pipe 142 and the plug 141 are respectively connected to the two ends of the protruding portions 121. The connecting area between the connector assembly 14 and the mounting base 12 is increased. The connection is convenient and the connection strength is high.

[0069] The plug-in connector 141 is sealingly connected to the inner wall surface of the protruding portion 121, and the elastic connector tube 142 is sealingly sleeved on the outer peripheral surface of the protruding portion 121. The elastic connector tube 142 and the plug-in connector 141 are sealingly connected to the outer peripheral surface and the inner wall surface of the protruding portion 121, respectively, so that the connection area between the elastic connector tube 142 and the plug-in connector 141 and the protruding portion 121 is large, the connection is convenient, and the connection strength is high. Among them, the plug-in connector 141 is screwed into the protruding portion 121, the elastic connector tube 142 is connected to the outer peripheral surface of the protruding portion 121 by a clamp, and the elastic connector tube 142 is connected to the outer peripheral surface of the connecting pipe 143 by a clamp, so that the connection is more convenient and the sealing performance is good. Among them, the plug-in connector 141 can be embedded in the protruding portion 121 by a tapered thread and a sealing raw material band and sealingly connected to the mounting seat 12, the connection is very convenient, the connection strength is high, the sealing state is good, and the waterproof sealing level of the electrical connection device can reach IP67 or more.

[0070] In the present embodiment, the two ends of the elastic connector tube 142 are respectively sealingly sleeved on the connecting pipe 143 and the protruding portion 121 by clamps. Of course, the plug-in assembly 14 can also adopt a quick plug structure to realize connection, that is, the two ends of the elastic connector tube 142 are respectively connected to the connecting pipe 143 and the protruding portion 121 by adopting a quick plug structure. The connecting pipe 143 and the protruding portion 121 can also be provided with a self-locking structure, and the connecting pipe 143 and the protruding portion 121 are connected to the elastic connector tube 142 by the self-locking structure, which can also ensure that the waterproof sealing level of the electrical connection device reaches IP67 or more.

[0071] The connecting pipe 143 penetrates through the first fixed plate 11, the connecting pipe 143 is provided with a connecting portion 144 on the outer peripheral surface thereof, the connecting portion 144 is connected to the first fixed plate 11, and the elastic connector tube 142 is sealingly connected to the connecting pipe 143. The connecting portion 144 protrudes outward from the outer peripheral surface of the connecting pipe 143 in the radial direction of the plug-in assembly 14, and the connecting pipe 143 is fixedly connected to the first fixed plate 11 by the connecting portion 144, so that the connection is convenient.

[0072] The two ends of the elastic connector tube 142 are sealingly connected to the connecting pipe 143 and the mounting seat 12 and are in communication with the connecting pipe 143 and the plug-in connector 141, and the connecting pipe 143, the elastic connector tube 142 and the plug-in connector 141 are used for the cold source to pass through. When the plug-in assembly 14 is in a sealed state, the connecting pipe 143 is used to connect a cooling system, and the cold source provided by the cooling system will pass through the connecting pipe 143, the elastic connector tube 142 and the plug-in connector 141 in sequence, and then pass through the plug-in seat 23 of the electrical connection socket 2 to flow into the battery pack to cool the battery pack.

[0073] The electric connector plug further comprises an annular sealing ring 15 sleeved on the mounting seat 12 and the first fixed plate 11, and the inner wall surface of the annular sealing ring 15 is connected to the mounting seat 12 and the first fixed plate 11 respectively. The annular sealing ring 15 has a sealing effect, and the annular sealing ring 15 is connected to the mounting seat 12 and the first fixed plate 11 with gaps in a surrounding manner, so that the mounting seat 12 and the first fixed plate 11 can be connected in a floating manner, the elastic reset of the mounting seat 12 is ensured, and the sealing effect of the electric connector plug 1 is effectively enhanced. At the same time, when the electric connection device is used, the annular sealing ring 15 will be sealed against the second fixed plate 21, and the annular sealing ring 15 and the electric connector socket 2 are sealed, so that the electric connection device has good waterproof sealing performance. The mounting seat 12 and the first fixed plate 11 can be provided with butterfly springs at four corners, and the elastic reset of the mounting seat 12 is further ensured by the butterfly springs.

[0074] The annular sealing ring 15 further has a plurality of partition portions, both ends of the plurality of partition portions are connected to the annular sealing ring 15 and divide the space in the annular sealing ring 15 into a plurality of closed spaces, and the partition portions are used to be sealed against the second fixed plate 21, so that the plurality of closed spaces are not connected. The electric connection assembly 13 mounted on the mounting seat 12 is isolated from the plug-in assembly 14 by the partition portions, so that the electric connection and water connection of the electric connection device are isolated from each other, and the safety and stability of the electric connection are further ensured.

[0075] The electric connection assembly 13 comprises a conductive pole 131, a flexible conductive piece 132 and a conductive plug 133, the conductive pole 131 is provided in the mounting seat 12, the conductive plug 133 is provided in the first fixed plate 11, and both ends of the flexible conductive piece 132 are connected to the conductive pole 131 and the conductive plug 133 respectively. The electric connection assembly 13 is connected to the electric connection piece 22 of the electric connector socket 2 through the conductive pole 131 to realize electric connection, and at the same time, the flexible conductive piece 132 can deform itself, so that the conductive plug 133 and the conductive pole 131 are connected in a floating manner through the flexible conductive piece 132. When the electric connection device is electrically connected, the conductive pole 131 can move together with the electric connection piece 22, effectively avoiding the failure of electric connection, and greatly enhancing the reliability and service life of the electric connection device during electric connection.

[0076] The flexible conductive piece 132 can comprise an elastic conductive wire, and both ends of the elastic conductive wire are connected to the conductive pole 131 and the conductive plug 133 respectively. The elastic conductive wire has elasticity and can be electrically connected to the conductive pole 131 and the conductive plug 133.

[0077] The flexible conductive element 132 may also include a conductive spring, with its two ends connected to the conductive electrode post 131 and the conductive plug 133, respectively. The conductive spring itself can deform and can also achieve electrical connection with the conductive electrode post 131 and the conductive plug 133.

[0078] The flexible conductive element 132 may include a cavity made of a flexible conductive material, with its two ends connected to the conductive electrode post 131 and the conductive plug 133, respectively. The cavity can be stretched, compressed, and radially torn, accommodating relative displacement changes in the axial and radial directions between the conductive electrode post 131 and the conductive plug 133. This prevents deterioration of the electrical connection performance of the electrical connection assembly 13 due to changes in relative displacement, significantly improving the stability of the electrical connection device during electrical connection. The cavity can be a spherical elastic cavity formed by multiple flexible conductive strips, a spherical elastic cavity formed by a mesh-like flexible conductive element, or a spherical elastic cavity formed by interlaced metal wires or by expanding a metal conductive strip.

[0079] In this embodiment, the number of electrical connection components 13 and electrical connectors 22 is not limited. The electrical connection components 13 and electrical connectors 22 can be respectively a low-voltage socket and a low-voltage plug, or a high-voltage socket and a high-voltage plug. The high-voltage socket and the high-voltage plug are paired, and the low-voltage socket and the low-voltage plug are paired. During the electrical connection process, the electrical connection device utilizes the principle of low-voltage controlling high-voltage. Specifically, during the electrical connection between the electrical connector plug 1 and the electrical connector socket 2, the connection between the high-voltage socket and the high-voltage plug precedes the connection between the low-voltage socket and the low-voltage plug. Only after the low-voltage socket and the low-voltage plug have made good contact can the high-voltage socket and the high-voltage plug make contact and be energized. During the disassembly process between the electrical connector plug 1 and the electrical connector socket 2, the disconnection between the low-voltage socket and the low-voltage plug precedes the disconnection between the high-voltage socket and the high-voltage plug. The low-voltage disconnection first controls the forced disconnection of the high-voltage power supply, effectively preventing adverse phenomena such as arcing between the high-voltage socket and the high-voltage plug during disassembly, greatly improving the safety and reliability of the electrical connection device during electrical connection.

[0080] The connector assembly 14 has a connector 141 at one end facing the connector 23. The connector 23 is fitted onto the connector 141 and can move along the length of the connector 141, and the connector 23 is in communication with the connector 141. The connector 23 and the connector 141 serve a positioning function. The electrical connector 1 is inserted into the connector 23 of the electrical connector socket 2 through the connector 141, enabling precise water connection of the electrical connection device and ensuring the accuracy of water and electrical connections. Simultaneously, the need for positioning pins and positioning sleeves between the electrical connector 1 and the electrical connector socket 2 is eliminated, reducing costs.

[0081] The plug 141 and the electric connection assembly 13 are exposed to the side of the mounting base 12 towards the second fixing plate 21, and the plug 141 is connected to the plug base 23 before the electric connection assembly 13 is connected to the electric connection piece 22. In the process of connecting the electric connection plug 1 and the electric connection socket 2, the plug 141 is first inserted into the plug base 23, and through the positioning effect of the plug base 23 and the plug 141, the subsequent electric connection assembly 13 and the electric connection piece 22 are accurately connected, effectively avoiding the use of too many positioning structures, solving the problem of mutual competition between positioning structures, ensuring the water and electricity connection accuracy of the electric connection device, improving the service life, and reducing the use cost. At the same time, the electric connection assembly 13 and the electric connection piece 22 are connected only after the plug base 23 and the plug 141 are connected, so that the water connection can be connected before the electricity connection, and the electricity connection can be connected before the cooling water is provided for circulation, effectively avoiding the leakage of cooling water. Of course, when the electric connection plug 1 and the electric connection socket 2 are disconnected, the electric connection assembly 13 and the electric connection piece 22 are disconnected first, and then the plug base 23 and the plug 141 are disconnected, so that the plug base 23 and the plug 141 do not provide cooling water before disconnection, further avoiding the leakage of cooling water. Among them, when the electric connection device is applied in combination of water and electricity, the electric connection between the electric connection assembly 13 and the electric connection piece 22 can be detected, that is, the signal detection of the low-voltage signal terminal is controlled to control the on-off control of the actual vehicle water cooling pump, which is beneficial to the control of the air bubbles and other adverse problems caused by the leakage of liquid cooling.

[0082] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and these changes and modifications all fall within the protection scope of the present application.

Claims

1. An electrical connector plug for electrical connection between a battery pack and a vehicle body in an electric vehicle, characterized in that, The electrical connector includes a first fixing plate, a mounting base, an electrical connection assembly, and a plurality of plug assemblies. The plug assemblies are used to allow a cold source to pass through in order to cool the battery pack. The electrical connection assembly and the plurality of plug assemblies are all connected to the mounting base, and the mounting base is floatingly connected to the first fixing plate. The connector assembly includes a connecting pipe, a flexible connecting pipe, and a plug. The plug is connected to the mounting base, the connecting pipe is connected to the first fixing plate, and the flexible connecting pipe is located between the mounting base and the first fixing plate. Both ends of the flexible connecting pipe are respectively connected to the connecting pipe and the plug. The two ends of the flexible conduit are respectively sealed and connected to the connecting pipe and the mounting base, and are connected to the connecting pipe and the plug, and the connecting pipe, the flexible conduit and the plug are all used for the passage of cold source; The mounting base has several protrusions on the side facing the first fixing plate. Each of the protrusions corresponds to a number of connector components. The elastic tube and the connector are respectively connected to the two ends of the protrusions and communicate with each other through the protrusions. The connector is sealed to the inner wall of the protrusion, and the elastic connecting pipe is sealed to the outer peripheral surface of the protrusion.

2. The electrical connector as described in claim 1, characterized in that, The connecting pipe passes through the first fixing plate, and a connecting part is provided on the outer circumferential surface of the connecting pipe. The connecting part is connected to the first fixing plate, and the elastic connecting pipe is sealed to the connecting pipe.

3. The electrical connector as described in claim 1, characterized in that, The elastic connector is made of a flexible material.

4. The electrical connector as described in claim 3, characterized in that, The material of the elastic conduit is rubber.

5. The electrical connector as described in claim 1, characterized in that, The electrical connector also includes an annular sealing ring, which is sleeved on the mounting base and the first fixing plate, and the two sides of the inner wall of the annular sealing ring are respectively connected to the mounting base and the first fixing plate.

6. The electrical connector as claimed in claim 1, characterized in that, The electrical connection assembly includes a conductive electrode post, a flexible conductive element, and a conductive plug. The conductive electrode post passes through the mounting base, the conductive plug passes through the first fixing plate, and the two ends of the flexible conductive element are respectively connected to the conductive electrode post and the conductive plug.

7. The electrical connector as described in claim 6, characterized in that, The flexible conductive element includes an elastic conductive wire, with its two ends connected to the conductive electrode post and the conductive plug, respectively. Alternatively, the flexible conductive element includes a conductive spring, with its two ends connected to the conductive electrode post and the conductive plug, respectively. Alternatively, the flexible conductive element may include a cavity made of a flexible conductive material, with both ends of the cavity connected to the conductive electrode post and the conductive plug, respectively.

8. An electrical connection device, characterized in that, It includes an electrical connection socket and an electrical connection plug as described in claim 1, wherein the electrical connection assembly and a plurality of the plug assemblies are all connected to the electrical connection socket.

9. The electrical connection device as claimed in claim 8, characterized in that, The electrical connection socket includes a second fixing plate, an electrical connector, and a plurality of plug sockets. The electrical connector and the plurality of plug sockets are all connected to the second fixing plate, and the electrical connector is detachably electrically connected to the electrical connection assembly. The plurality of plug sockets correspond one-to-one with the plurality of plug-in assemblies, and the plug sockets are detachably connected to the plug-in assemblies.

10. The electrical connection device as claimed in claim 9, characterized in that, The connector assembly has a connector at one end facing the connector base. The connector base is sleeved on the connector base and is movable on the connector base along the length direction of the connector base. The connector base is connected to the connector base.

11. The electrical connection device as claimed in claim 10, characterized in that, Both the connector and the electrical connection assembly are exposed on the side of the mounting base facing the second fixing plate, and the connector and the socket are connected before the electrical connection assembly and the electrical connector are connected.

12. An electric vehicle, characterized in that, It includes a battery pack, a vehicle body, and an electrical connection device as described in any one of claims 8-11, wherein the electrical connection plug is connected to the vehicle body and the electrical connection socket is connected to the battery pack.

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