Battery swapping battery box liquid cooling connector

Abstract

The application provides a battery box liquid cooling connector, which comprises a plug assembly, a socket assembly, a fixing bracket assembly, a gear reset assembly and a floating assembly, the fixing bracket assembly is arranged on the plug assembly and the socket assembly and is connected through a guide pin and a guide pin sleeve, the gear reset assembly is fixedly connected with the fixing bracket assembly, and the floating assembly is floatingly connected with the socket assembly through a spring assembly; the plug assembly and the socket assembly each comprise a valve core body, a lower end cover, an upper end cover and a valve body shaft, a first water pipe connecting hole is arranged on the plug lower end cover, a connecting pipe is arranged on the plug upper end cover, a connecting pipe sleeve hole is arranged on the socket lower end cover, and a second water pipe connecting hole is arranged on the socket upper end cover; the plug assembly and the socket assembly are connected through the connecting pipe and the connecting pipe sleeve hole. The application is convenient to plug and unplug, realizes synchronous connection and closing of a water channel between a battery box and a vehicle body, guarantees reliable connection of a water pipe, and avoids water leakage caused by rupture of the water pipe due to rigid stress.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of liquid cooling connectors, and particularly relates to a battery box liquid cooling connector for battery replacement. BACKGROUND

[0002] With the vigorous development of electric vehicles, the advantages of the battery replacement mode have been recognized by the industry, and various battery replacement technologies have emerged, especially in the battery replacement mode of the battery box of an electric vehicle, reliable installation and quick replacement of the battery are extremely important. Most battery replacement vehicles adopt a lower structure connection between the battery and the vehicle body, and many vehicles are equipped with liquid cooling battery replacement connectors to improve the charge and discharge performance of the battery. During the driving of the vehicle, the battery box installed at the bottom of the vehicle body is prone to swing or up-and-down vibration due to the bumping of the vehicle body, which causes the water pipe connected by the battery box liquid cooling connector to be stressed and torn, thereby damaging the sealing function of the battery box liquid cooling connector, and further causing water leakage of the water pipe connected between the battery and the vehicle body. In addition, during the installation and disassembly of the battery box, the liquid cooling battery replacement connector is also prone to be damaged due to inaccurate positioning and battery replacement. On the one hand, the battery box itself may have a machining size error and a manufacturing error of the vehicle itself, and on the other hand, the battery box replacement mechanism itself may also have an installation position deviation caused by inaccurate positioning during operation. Multiple deviations may cause the liquid cooling connector of the battery replacement battery box to be difficult to be plugged in accurately during plugging, and thus the liquid cooling connector needs to be designed to have a circumferential floating function to meet the requirements of adapting to various deviations. The liquid cooling connector is a connector that uses cooling liquid circulation for heat dissipation, and can quickly dissipate the heat in the equipment in the electric vehicle industry. However, during battery replacement, excessive cooling liquid may leak, which causes the cooling liquid to be frequently replenished. Therefore, the application designs a battery box liquid cooling connector capable of multi-angle floating to solve the above problems. SUMMARY

[0003] In view of the above deficiencies of the prior art, the application aims to provide a battery box liquid cooling connector, which is optimized in structure by setting a double-hole valve core body of a socket assembly and a plug assembly, a gear reset assembly and a floating assembly, so that the application can be accurately positioned and reliably plugged, the inlet and outlet water paths between the battery box and the vehicle body are synchronously connected and closed, the reliable connection of the water pipe is ensured, and water leakage caused by the rupture of the water pipe due to rigid stress is avoided.

[0004] The application is implemented by the following technical solutions:

[0005] The application discloses a battery box liquid cooling connector which comprises a plug assembly, a socket assembly, a fixing support assembly, a gear reset assembly and a floating assembly.

[0006] The socket assembly comprises a socket valve core body, a socket lower end cover, a socket upper end cover and a socket valve body shaft, the socket upper end cover and the socket lower end cover are fixedly connected and wrap the socket valve core body therein, the socket lower end cover is provided with a connecting pipe sleeve hole, the connecting pipe sleeve hole is sleeved on the connecting pipe and is sealingly connected through the sealing ring, and the socket upper end cover is provided with a second water pipe connecting hole.

[0007] The fixing support assembly comprises a plug fixing support and a socket fixing support, the plug fixing support comprises a plug fixing plate, a first guide pin and a second guide pin, the plug fixing plate is fixedly connected with the plug upper end cover, and the first guide pin and the second guide pin are arranged on the plug fixing plate, the socket fixing support comprises a socket fixing plate, a first guide pin sleeve and a second guide pin sleeve, the socket fixing plate is fixedly connected with the socket lower end cover, the first guide pin sleeve and the second guide pin sleeve are arranged on the socket fixing plate, and the first guide pin and the second guide pin are respectively inserted into the first guide pin sleeve and the second guide pin sleeve to be guided and fixed.

[0008] The gear reset assembly comprises a plug gear reset assembly and a socket gear reset assembly, the plug gear reset assembly and the socket gear reset assembly each comprise a rack frame, a guide cover, a reset spring, a straight rack, a rack stopper and a gear, the guide cover is sleeved on the outside of the rack frame, and the rack stopper is fixed on the plug fixing plate and the socket fixing plate respectively, the straight rack comprises a cylinder body and a straight tooth structure, the lower end of the cylinder body is inserted into the first end of the reset spring, the second end of the reset spring is sleeved on a cylindrical protrusion at the bottom of the rack frame, the upper end of the cylinder body penetrates through a limiting through hole at the top of the guide cover and is in contact with or separated from the rack stopper, the straight tooth structure is arranged in the middle part of the cylinder body and is in meshing connection with the gear, and the gear is matched with the shaft center of one end of the plug valve body shaft and the socket valve body shaft respectively.

[0009] The floating assembly comprises a floating fixed plate, a vertical spring assembly and a horizontal spring assembly, the vertical spring assembly comprises a guide shaft and a vertical spring, the vertical spring is sleeved on the guide shaft, the first end of the guide shaft is fixed on the floating fixed plate, and the second end of the guide shaft is threadedly connected with the socket fixed plate; the horizontal spring assembly comprises an outer end fixed pin, a horizontal spring and an inner end fixed pin, the outer end fixed pin is arranged at the corner of the floating fixed plate, the inner end fixed pin is arranged on the upper end cover of the socket, and the two ends of the horizontal spring are fixedly connected with the outer end fixed pin and the inner end fixed pin respectively.

[0010] Preferably, double holes are arranged on the plug valve body, the plug upper end cover, the plug lower end cover, the socket valve body, the socket upper end cover and the socket lower end cover, and the double holes are coaxially arranged with the first water pipe connecting hole, the second water pipe connecting hole, the connecting pipe and the connecting pipe sleeve hole.

[0011] Preferably, the plug valve body shaft and the plug valve body are an integral structure, the socket valve body shaft and the socket valve body are an integral structure, the axis of the plug valve body shaft and the socket valve body shaft intersects with the center of the plug valve body and the socket valve body respectively, and the axes of the double holes on the plug valve body and the socket valve body vertically intersect with the axes of the plug valve body shaft and the socket valve body shaft.

[0012] Preferably, the sealing ring comprises a first sealing ring and a second sealing ring, the end of the connecting pipe is a conical structure matched with the internal structure of the connecting pipe sleeve hole, the first sealing ring is arranged on the inclined surface of the conical structure, and the second sealing ring is arranged on the vertical surface of the connecting pipe.

[0013] Preferably, both sides of the plug lower end cover, the plug upper end cover, the socket lower end cover and the socket upper end cover are provided with semicircular grooves, the plug valve body shaft and the socket valve body shaft are wrapped in the two semicircular grooves respectively and rotate in the semicircular grooves.

[0014] Preferably, the plug gear reset assembly and the socket gear reset assembly are 180-degree rotationally symmetrical, have the same structure and function and have opposite movement directions.

[0015] Preferably, the socket fixed plate is provided with a guide shaft connecting hole, the diameter of the guide shaft connecting hole is greater than the diameter of the guide shaft, and the second end of the guide shaft is slidably connected with the socket fixed plate through a limiting nut through the guide shaft connecting hole.

[0016] Preferably, a cavity for floating of the socket assembly is formed between the floating fixed plate and the socket fixed plate.

[0017] Preferably, the number of the inner end fixed pins and the outer end fixed pins is the same, and the positions of the inner end fixed pins and the outer end fixed pins one-to-one correspond.

[0018] Preferably, the end of the outer end fixing pin is provided with a spring outer end fixing groove, the end of the inner end fixing pin is provided with a spring inner end fixing groove, the first end of the transverse spring is hung in the spring outer end fixing groove, the end of the inner end fixing pin passes through the center through hole of the floating fixing plate, and the second end of the transverse spring is hung in the corresponding spring inner end fixing groove.

[0019] Compared with the prior art, the application has the following beneficial effects:

[0020] 1、The valve core body with the double-hole structure cooperates with the symmetrically arranged gear reset assembly, so that the water inlet and outlet paths between the battery box and the vehicle body can be connected and closed synchronously.

[0021] 2、The connecting pipe sleeve hole and the connecting pipe are matched, and the guiding and fixing of the guide pin and the guide pin sleeve are achieved, so that the running track of the connecting pipe is not easy to deviate during plugging, and the positioning is accurate.

[0022] 3、The floating assembly is arranged, the socket assembly can float in three directions of X axis, Y axis and Z axis when the vehicle body vibrates or bounces, so that the rupture of the water inlet and outlet pipes caused by rigid stress can be avoided, the reliable connection of the water pipes is ensured, the fault tolerance for the plugging operation of the cooling water path during battery replacement is provided, and the plugging resistance is reduced.

[0023] 4、The device main body is designed as a double-hole ball valve switch, and the pipeline is directly connected, so that the cooling liquid flows smoothly without any resistance.

[0024] 5、The connecting pipe is designed as a conical pipe opening, which is closer to the lower end of the socket valve core during connection, the loss of the cooling liquid is reduced when the double-hole is closed by pulling out the liquid cooling battery replacement connector, and the connecting pipe is provided with three layers of seals, the upper layer is a conical surface compression mode, the vertical surface is provided with two layers of reinforced sealing rings, and the three layers provide multiple sealing functions to ensure the reliability of the sealing. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the battery replacement battery box liquid cooling connector of the application;

[0026] Figure 2 It is an explosion schematic view of the battery replacement battery box liquid cooling connector of the application;

[0027] Figure 3 It is an explosion schematic view of the plug assembly of the application;

[0028] Figure 4 It is an explosion schematic view of the socket assembly of the application;

[0029] Figure 5 It is an explosion schematic view of the floating assembly of the application;

[0030] Figure 6 Figure 2 is a cross-sectional view of the liquid cooling connector of the battery box after plugging of the application.

[0031] Figure mark description:

[0032] 1, plug valve body; 2, plug valve body shaft; 3, gear; 4, straight rack; 41, straight tooth structure; 42, cylinder; 5, guide cover; 6, return spring; 7, rack frame; 8, plug lower end cover; 9, plug upper end cover; 11, plug fixing plate; 12, first guide pin; 13, second guide pin; 21, socket fixing plate; 22, first guide pin sleeve; 23, second guide pin sleeve; 31, floating fixing plate; 32, guide shaft; 33, outer end fixing pin; 34, transverse spring, 35, inner end fixing pin; 36, limit nut; 61, limit through hole; 62, cylindrical protrusion; 63, first water pipe connecting hole; 64, connecting pipe; 65, rack stop block; 66- vertical spring; 67, connecting pipe sleeve hole; 68, second water pipe connecting hole; 91, first sealing ring; 92, second sealing ring; 101, socket valve body; 102, socket valve body shaft; 109, socket upper end cover; 108, socket lower end cover. DETAILED DESCRIPTION

[0033] In order to fully understand the technical content, structural features, purposes achieved and beneficial effects of the application, the following will be described in detail in conjunction with the drawings of the specification.

[0034] A liquid cooling connector for a battery box of the application, as shown in Figures 1 to 6 , comprises a plug assembly, a socket assembly, a gear reset assembly, a fixed support assembly and a floating assembly, the plug assembly is installed at the end of the battery box, the socket assembly is installed on the vehicle body, and the plug assembly is located below the socket assembly.

[0035] As shown in Figure 3 , the plug assembly comprises a plug valve body 1 provided with a double-hole spherical structure, a plug lower end cover 8 provided with a double-hole, a plug upper end cover 9 provided with a double-hole, and a plug valve body shaft 2, the plug lower end cover and the plug upper end cover are both provided with a semicircular type inner groove structure and are fixedly connected by a fixing bolt, both of which wrap the plug valve body 1 therein and tightly cooperate with the plug valve body 1. The plug lower end cover 8 and the plug upper end cover 9 are both provided with a semicircular shaft groove matching the circumference of the plug valve body shaft 2, the plug valve body shaft 2 is wrapped in the two semicircular shaft grooves, and can drive the plug valve body 1 to rotate synchronously in the semicircular shaft groove.

[0036] The double-hole of the plug lower end cover 8 is provided with a first water pipe connecting hole 63 protruding outwardly for connecting water pipes, and the first water pipe connecting hole extends from the double-hole of the plug lower end cover in a pipe shape, and can connect two water pipes. The double-hole of the plug upper end cover 9 is provided with two connecting pipes 64 protruding upwardly, and the end of the connecting pipe 64 is a conical structure. The outer side of the connecting pipe is provided with a sealing ring, and the sealing ring includes a first sealing ring 91 and a second sealing ring 92, one layer of the first sealing ring 91 is arranged on the inclined surface of the conical structure, and two layers of the second sealing ring 92 are arranged on the vertical surface of the connecting pipe 64, and the corresponding position of the sealing ring is provided with a groove, and the sealing cooperation avoids water leakage.

[0037] The plug valve body shaft 2 is arranged on the plug valve core body 1. Specifically, the plug valve body shaft 2 is an integral structure with the plug valve core body 1, and the axis of the plug valve body shaft 2 intersects with the center of the plug valve core body 1. The double-holes of the plug valve core body 1 are arranged in parallel and their axes are perpendicular to the axis of the plug valve body shaft 2.

[0038] As shown in Figure 4 The socket assembly includes a socket valve core body 101 provided with a double-hole spherical structure, a socket lower end cover 108 provided with a double-hole, a socket upper end cover 109 provided with a double-hole, and a socket valve body shaft 102. The socket lower end cover and the socket upper end cover are both half-circular concave groove structures and are fixedly connected by a fixing bolt, and both of them wrap the socket valve core body therebetween and tightly cooperate with the socket valve core body 101. The two sides of the socket lower end cover 108 and the socket upper end cover 109 are both provided with a half-circular shaft groove matching the circumferential surface of the socket valve body shaft 102, and the socket valve body shaft 102 is wrapped in the two half-circular shaft grooves at both ends, and can drive the plug valve core body 1 to rotate synchronously in the half-circular shaft grooves.

[0039] The double-hole of the socket lower end cover 108 is provided with a connecting pipe sleeve hole 67 protruding outwardly, and the connecting pipe sleeve hole is an integral structure and its internal structure of the two sleeve holes is coaxially matched with the end structure of the two connecting pipes 64. The connecting pipe 64 is inserted into the connecting pipe sleeve hole 67 and is sealingly connected by the sealing ring. The double-hole of the socket upper end cover 109 is provided with a second water pipe connecting hole 68 which has the same structure as the first water pipe connecting hole 63 on the plug lower end cover 8.

[0040] The socket valve body shaft 102 is arranged on the socket valve core body 101. The structure and function of the socket valve body shaft 102 and the socket valve core body 101, the plug valve body shaft 2 and the plug valve core body 1 are completely the same and symmetrically arranged.

[0041] In the preferred embodiment of the present application, when the water inlet and outlet channels are communicated, the double-holes on the plug valve core body 1, the plug upper end cover 9, the plug lower end cover 8, the socket valve core body 101, the socket upper end cover 109 and the socket lower end cover 108 are coaxially arranged with the first water pipe connecting hole 63, the second water pipe connecting hole 68, the connecting pipe 64 and the connecting pipe sleeve hole 67, so that the water channel is smooth.

[0042] The fixed support assembly comprises a plug fixed support and a socket fixed support.

[0043] The plug fixed support comprises a plug fixed plate 11, a first guide pin 12 and a second guide pin 13. The plug fixed plate 11 is provided with a middle circular hole, which is sleeved and fixed on the upper side of the arc of the plug upper end cover 9. The plug fixed plate 11 is in fixed connection with the plug upper end cover 9. The first guide pin 12 and the second guide pin 13 are symmetrically arranged on the upper surface of the plug fixed plate 11. The bottom of the first guide pin 12 and the second guide pin 13 is fixedly connected with the plug fixed plate 11.

[0044] The socket fixed support comprises a socket fixed plate 21, a first guide pin sleeve 22 and a second guide pin sleeve 23. The socket fixed plate 21 is provided with a middle circular hole, which is sleeved and fixed on the lower side of the arc of the socket lower end cover 108. The socket fixed plate 21 is in fixed connection with the socket lower end cover 108. The first guide pin sleeve 22 and the second guide pin sleeve 23 are fixedly installed on the lower surface of the socket fixed plate 21. The first guide pin sleeve 22 and the second guide pin sleeve 23 correspond to the positions of the first guide pin 12 and the second guide pin 13, respectively. The first guide pin 12 is inserted into the first guide pin sleeve 22, and the second guide pin 13 is inserted into the second guide pin sleeve 23. When the plug assembly and the socket assembly are inserted and separated, the first guide pin 12 and the second guide pin 13 play a role of upward and downward guidance, so as to ensure that the movement track does not deviate, enhance the matching degree, reduce the equipment wear, and play a role of fixation after the plug assembly and the socket assembly are completely inserted.

[0045] As shown in Figure 2 , Figure 3 , Figure 6 The gear reset assembly comprises a plug gear reset assembly and a socket gear reset assembly, which are completely the same in structure and function and are rotationally symmetrically arranged and opposite in movement direction.

[0046] The gear reset assembly comprises a rack frame 7, a guide cover 5, a reset spring 6, a straight rack 4, a rack stopper 65 and a gear 3. The rack frame 7 and the guide cover 5 are both in the form of a groove with two open sides, and the guide cover 5 is sleeved on the outside of the rack frame 7. The rack frame 7 is used to constrain the sliding stroke of the straight rack. The bottom of the rack frame 7 is provided with a cylindrical protrusion 62, and the top of the guide cover is provided with a limiting through hole 61 for limiting the straight rack. The straight rack 4 and the reset spring 6 are both arranged in the rack frame 7. The straight rack 4 comprises a cylindrical body 42 and a straight tooth structure 41. The lower end of the cylindrical body 42 is inserted into the first end of the reset spring 6, the second end of the reset spring 6 is sleeved on the cylindrical protrusion 62, and the reset spring 6 is compressed to provide an upward reset force for the straight rack. The upper end of the cylindrical body 42 passes through the limiting through hole 61 at the top of the guide cover 5 and is in contact with or separated from the rack stopper 65. The rack stopper 65 is fixed on the plug fixing plate 11 and the socket fixing plate 21 respectively, and provides the compression force of the reset spring 6 when the liquid-cooled battery swap connector is plugged into place. The straight tooth structure 41 is arranged at the middle part of the cylindrical body 42 and is in meshing connection with the gear 3. The two gears 3 are fixedly connected with one end of the plug valve body shaft 2 and the socket valve body shaft 102 respectively and are in axial cooperation.

[0047] The plug gear reset assembly and the socket gear reset assembly are the same in structure, action principle and mode. The working principle of the two will be described by taking the plug gear reset assembly as an example. Specifically, the plug assembly is fixed on the battery box through the plug fixing plate 11, and the rack frame 7 and the guide cover 5 of the plug gear reset assembly are fixed on the battery box as an integrated structure. During the battery swap process, when the plug assembly and the plug gear reset assembly move downward together with the battery box, the upper end of the cylindrical body 42 is separated from the rack stopper 65 fixed on the socket fixing plate 21, the compression force of the reset spring 6 is released to push the straight rack 4 to slide upward, the straight rack 4 drives the gear 3 to rotate in the reverse direction, the gear 3 drives the plug valve body shaft 2 and the valve core body 1 to rotate by 90 degrees, and the upper and lower passages of the double holes of the socket valve core body in the plugged position are closed. At the same time, the socket gear reset assembly moves synchronously to close the upper and lower passages of the double holes of the socket valve core body, and the battery box is disassembled.

[0048] As shown in Figure 5 , the floating assembly is fixedly connected with the socket assembly through the socket fixing plate 21. The floating assembly enables the socket assembly and the plug assembly connected together to realize three-way movement in X, Y and Z directions. The X and Y directions are horizontal directions, and the Z direction is a vertical up and down direction perpendicular to the X and Y planes.

[0049] The floating assembly comprises a floating fixing plate 31, a vertical spring assembly and a horizontal spring assembly. The floating fixing plate 31 is arranged above the socket assembly and is in the form of a square plate with a central through hole in the center.

[0050] The vertical spring assembly comprises a guide shaft 32, vertical springs 66 and a limiting nut 36, the first end of the guide shaft 32 is fixed to the floating fixing plate 31, and the vertical springs 66 are sleeved on the guide shaft 32. The socket fixing plate 21 is provided with a guide shaft connecting hole corresponding to the position of the guide shaft 32, the diameter of the guide shaft connecting hole is larger than the diameter of the guide shaft 32, the second end of the guide shaft 32 penetrates through the guide shaft connecting hole and is slidably connected with the socket fixing plate 21 through the limiting nut 36. The floating fixing plate 31 and the socket fixing plate 21 form a cavity therebetween to provide a floating space for the socket assembly. The socket assembly is just located in the cavity therebetween. The socket assembly is fixed by the consistent extension and contraction force of the four vertical springs 66, and has a rotation angle in X and Y directions and a stretching space in Z direction.

[0051] The lateral spring assembly comprises outer end fixing pins 33, lateral springs 34 and inner end fixing pins 35. The four outer end fixing pins 33 are respectively fixed to the four corner portions of the floating fixing plate, and the end portions of the outer end fixing pins 33 are provided with spring outer end fixing grooves. The inner end fixing pins 35 are arranged on the upper end cover 109 of the socket, and the end portions of the inner end fixing pins 35 are provided with spring inner end fixing grooves. The number of the inner end fixing pins is the same as that of the outer end fixing pins, and the end portions of the inner end fixing pins 35 penetrate through the center through hole of the floating fixing plate 31 and correspond to the outer end fixing pins 33 one by one.

[0052] The two ends of the lateral springs 34 are respectively fixedly connected with a corresponding group of outer end fixing pins 33 and inner end fixing pins 35, and the four lateral springs 34 are horizontally distributed on the floating fixing plate 31. Specifically, the first end of the lateral spring 34 is hung in the spring outer end fixing groove, and the second end of the lateral spring is hung in the spring inner end fixing groove. The multiple lateral springs 34 are elastically consistent, uniformly apply a pulling force to the socket assembly, and provide the socket assembly with a rotation angle and a movement amount in X and Y directions by means of the consistent extension and contraction force of the lateral springs 34, so that the socket assembly is suspended in the center through hole of the floating fixing plate 31. When the vehicle body vibrates or jolts, the socket assembly can float in the cavity between the floating fixing plate 31 and the socket fixing plate 21, so as to avoid the breakage of the water inlet and outlet caused by excessive force and water leakage.

[0053] Further, the floating function of the present application is realized as follows:

[0054] The floating fixing plate 31 is fixedly connected with the vehicle body, and the second water pipe connecting hole 68 on the upper end cover 109 of the socket is used for connecting the pipeline in the vehicle body. The plug fixing plate 11 is fixedly connected with the battery box, and the first water pipe connecting hole 63 on the lower end cover 8 of the plug is used for connecting the cooling liquid pipeline in the battery box.

[0055] When the vehicle body vibrates or bounces, multiple-direction vibrations or displacements exist between the vehicle body and the battery box. The push-pull force of the vertical spring 66 and the horizontal spring 34 enables the socket assembly to have a three-direction floating function. Since the plug assembly and the socket assembly are integrally inserted, the plug assembly also has a three-direction floating function. That is, the battery box is relatively fixed to the socket assembly and the plug assembly, so as to avoid the generation of torsion of the socket assembly and the plug assembly, and to avoid the risk of wear and breakage.

[0056] The specific embodiments of the present application are further described below:

[0057] The plug assembly of the present application is connected to the plug fixing support and moves synchronously. The plug gear reset assembly rotates with the integral insertion and separation of the plug assembly and the socket assembly, so as to realize the connection and closing of the water inlet and outlet.

[0058] As shown in FIGS. Figure 1 and Figure 6 In the fully inserted state, the first guide pin sleeve 22 and the second guide pin sleeve 23 are sleeved on the first guide pin 12 and the second guide pin 13 to play a fixing and guiding role, so as to ensure that the connecting pipe 64 and the connecting pipe sleeve hole 67 are aligned up and down, and facilitate insertion and extraction. At this time, the cylinder 42 of the straight rack 4 is in contact with the rack stop block 65, the reset spring 6 is compressed, the gear 3 and the straight rack 4 are always in meshing state, the double holes of the plug valve core body 1 and the socket valve core body 101 are just communicated with the connecting pipe 64, the first water pipe connecting hole 63 and the second water pipe connecting hole 68, that is, the water inlet and outlet of the vehicle body and the battery box are in a connected state. The ball valve core body designed with double holes forms a larger liquid passage when opened, which reduces the flow resistance.

[0059] When the battery is replaced, the water inlet and outlet of the vehicle body and the battery box need to be disconnected, and the cylinder 42 of the straight rack 4 is separated from the rack stop block 65. The gear 3 rotates, the valve core body rotates, the double holes on the plug valve core body 1 and the socket valve core body 101 are deviated from the vertical double hole positions on the upper end cover and the lower end cover, and form a 90-degree included angle. At this time, the valve core body is closed, and the water inlet and outlet are blocked. After the valve core body is closed, the connecting pipe 64 is synchronously extracted from the connecting pipe sleeve hole 67, the guide pin is synchronously extracted from the guide pin sleeve, the battery box moves downward, the plug assembly and the socket assembly are separated, the top of the connecting pipe 64 is closer to the lower end of the socket valve core body, and there is less cooling liquid left in the smaller space. When the liquid cooling battery replacement connector is extracted to close the double holes, less cooling liquid will be lost.

[0060] The above-described embodiments are only preferred embodiments of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A battery swap battery box liquid cooling connector, characterized in that, It includes plug assembly, socket assembly, fixed support assembly, gear reset assembly and floating assembly, The plug assembly includes plug valve core body, plug lower end cover, plug upper end cover and plug valve body shaft, the plug upper end cover and the plug lower end cover are fixedly connected and wrap the plug valve core body, the plug lower end cover is provided with a first water pipe connecting hole, the plug upper end cover is provided with a connecting pipe, and the connecting pipe is provided with a sealing ring; the plug valve body shaft is arranged on the plug valve core body; The socket assembly includes socket valve core body, socket lower end cover, socket upper end cover and socket valve body shaft, the socket upper end cover and the socket lower end cover are fixedly connected and wrap the socket valve core body, the socket lower end cover is provided with a connecting pipe sleeve hole, the connecting pipe sleeve hole is sleeved on the connecting pipe and is sealingly connected through the sealing ring; the socket upper end cover is provided with a second water pipe connecting hole, and the socket valve body shaft is arranged on the socket valve core body; The fixed support assembly includes plug fixed support and socket fixed support, the plug fixed support includes plug fixed plate, first guide pin and second guide pin, the plug fixed plate is fixedly connected with the plug upper end cover, and the first guide pin and the second guide pin are arranged on the plug fixed plate; the socket fixed support includes socket fixed plate, first guide pin sleeve and second guide pin sleeve, the socket fixed plate is fixedly connected with the socket lower end cover, and the first guide pin sleeve and the second guide pin sleeve are arranged on the socket fixed plate; the first guide pin and the second guide pin are respectively inserted into the first guide pin sleeve and the second guide pin sleeve for guidance and fixation; The gear reset assembly includes plug gear reset assembly and socket gear reset assembly, the plug gear reset assembly and the socket gear reset assembly each include rack frame, guide cover, reset spring, straight rack, rack stopper and gear, the guide cover is sleeved on the outer side of the rack frame, and the rack stopper is fixed on the plug fixed plate and the socket fixed plate respectively; the straight rack includes cylinder body and straight tooth structure, the lower end of the cylinder body is inserted into the first end of the reset spring, the second end of the reset spring is sleeved on the cylindrical protrusion at the bottom of the rack frame, the upper end of the cylinder body passes through the limiting through hole at the top end of the guide cover and is in contact with or separated from the rack stopper; the straight tooth structure is arranged in the middle part of the cylinder body and is in meshing connection with the gear, and the gear is matched with the one end shaft of the plug valve body shaft and the socket valve body shaft respectively; The floating assembly includes floating fixed plate, vertical spring assembly and horizontal spring assembly, the vertical spring assembly includes guide shaft and vertical spring, the vertical spring is sleeved on the guide shaft, the first end of the guide shaft is fixed on the floating fixed plate, and the second end of the guide shaft is threadedly connected with the socket fixed plate; the horizontal spring assembly includes outer end fixed pin, horizontal spring and inner end fixed pin, the outer end fixed pin is arranged at the corner of the floating fixed plate, the inner end fixed pin is arranged on the socket upper end cover, and the horizontal spring is fixedly connected with the outer end fixed pin and the inner end fixed pin at two ends respectively.

2. The battery swap battery pack liquid cooling connector of claim 1, wherein, The double holes are coaxially arranged with the first water pipe connecting hole, the second water pipe connecting hole, the connecting pipe and the connecting pipe sleeve hole.

3. The battery swap battery box liquid cooling connector of claim 1, wherein, The plug valve body shaft and the plug valve core body are an integral structure, and the plug valve body shaft and the plug valve core body are coaxially arranged.

4. The battery swap battery pack liquid cooling connector of claim 1, wherein, The connecting pipe is a conical structure and is matched with the internal structure of the connecting pipe sleeve hole.

5. The battery swap battery pack liquid cooling connector of claim 1, wherein, The plug lower end cover, the plug upper end cover, the socket lower end cover and the socket upper end cover are respectively wrapped in the two semicircular grooves and rotate in the semicircular grooves.

6. The battery swap battery pack liquid cooling connector of claim 1, wherein, The plug gear reset assembly and the socket gear reset assembly are 180 degrees rotationally symmetrically arranged, and the structure, function and movement direction thereof are opposite.

7. The battery swap battery pack liquid cooling connector of claim 1, wherein, The guiding shaft connecting hole is arranged on the socket fixing plate, and the diameter of the guiding shaft connecting hole is larger than the diameter of the guiding shaft. 8.The battery swap battery box liquid cooling connector according to claim 1, characterized in that, The floating fixing plate and the socket fixing plate form a cavity for the floating of the socket assembly. 9.The battery swap battery box liquid cooling connector according to claim 1, characterized in that, The number of the inner end fixing pins and the outer end fixing pins is the same, and the positions of the inner end fixing pins and the outer end fixing pins are one-to-one corresponding.

10. The battery swap battery box liquid cooling connector of claim 9, wherein, The end of the outer end fixing pin is provided with a spring outer end fixing groove, the end of the inner end fixing pin is provided with a spring inner end fixing groove, the first end of the transverse spring is hung in the spring outer end fixing groove, the end of the inner end fixing pin passes through the center through hole of the floating fixing plate, and the second end of the transverse spring is hung in the corresponding spring inner end fixing groove.

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